Device for transporting and / or using at least one electrical handheld machine tool and use of the device

Abstract

The invention relates to a device (10) for transporting and / or using at least one electrical handheld machine tool. The device (10) comprises a frame (12) with a first frame end (12a) and a second frame end (12b), a handle unit (20) which is provided on the frame (12) near the first frame end (12a), at least two wheels (26a, 26b) which are mounted on the frame (12) near the second frame end (12b), and a support platform (40) for receiving a goods item (45) to be transported, said support platform being coupled to the frame (12) near the second frame end (12b) of the frame (12) and projecting from the frame (12) at least in a transport configuration. The device (10) further comprises a coupling unit (90) for coupling to a vehicle (91), the coupling unit (90) being provided on the frame (12) near the first frame end (12a). The invention also relates to uses of the device (10) as a vehicle trailer, as a hand cart and as a work table.

Description

[0001] Device for transporting and / or using at least one electric hand-held power tool and uses of the device

[0002] The invention relates to a device for transporting and / or using at least one electric hand-held power tool.

[0003] Furthermore, the invention is directed to uses of such a device.

[0004] Electric hand-held power tools that are used outside of a workshop, e.g. at a customer's premises or on a construction site, must be transported to that customer or construction site before they can be used. To do this, the hand-held power tools usually have to be transported through public spaces in order to get from the workshop or business of the user of the electric hand-held power tools, a previous customer or construction site to the next customer or construction site. In this context, it is also possible that the hand-held power tools are to be used indoors, e.g. in an apartment or in a customer's residential building or on an indoor building site. In this case, it may also be necessary to transport the hand-held power tools within a building, for example, through a stairwell or hallway.Since hand-held machine tools usually have a certain weight and it is often necessary to transport a number of hand-held machine tools, such transports represent a burden for the user of the hand-held machine tools.

[0005] The object of the present invention is therefore to simplify such transport of hand-held power tools. This object is achieved by a device for transporting and / or using at least one electric hand-held power tool. The device comprises a frame with a first stand and a second stand, wherein the second stand is arranged opposite the first stand. In addition, the device comprises a handle unit which is provided on the frame in the region of the first stand. In addition, the device comprises at least two wheels which are rotatable about a common central axis, wherein the at least two wheels are mounted on the frame in the region of the second stand. Furthermore, the device comprises a storage platform for receiving a transport item, wherein the storage platform is coupled to the frame in the region of the second stand of the frame and protrudes from the frame at least in a transport configuration.The device also comprises a coupling unit for coupling to a vehicle, wherein the coupling unit is provided on the frame in the region of the first stand. In this context, the region of the first stand comprises the first stand. Thus, the region of the first stand relates to the first stand itself as well as regions in the vicinity of the first stand. An area of ​​the first stand can thus be understood as, for example, a half of the frame adjacent to the first stand. The area of ​​the first stand can also be understood as a third or quarter of the frame adjacent to the first stand. The same applies to the area of ​​the second stand. This means that the area of ​​the second stand comprises the second stand. Thus, the area of ​​the second stand relates to the second stand itself as well as regions in the vicinity of the second stand.An area of ​​the second stand can thus be understood as, for example, a half of the frame adjacent to the second stand. The area of ​​the second stand can also be understood as a third or quarter of the frame adjacent to the second stand. The fact that a first element, e.g. the handle unit or the coupling unit, is provided on a second element, e.g. the stand, implies in this case that the first element is formed on the second element. In this case, the first element and the second element are formed integrally. The fact that a first element is provided on a second element also implies that the first element is fastened to the second element. In this case, the first element and the second element are formed as separate elements. Furthermore, the common central axis is to be understood as a virtual axis of rotation.The common central axis therefore does not represent a physical component. In the context of the present invention, the transport item can be formed by one or more hand-held power tools. It is also conceivable for the transport item to comprise accessories for the hand-held power tool, raw materials and / or workpieces that are to be machined using the hand-held power tool at a destination, for example at a customer's premises or on a construction site. By using the wheels and the handle unit, this transport item can therefore be transported relatively easily. In this context, the device is used as a handcart. Since the wheels and the storage platform are arranged on one end of the frame and the handle unit is provided on an opposite end of the frame, the device can be used like a sack barrow. In simple terms, the device is therefore a sack barrow.This means that even relatively heavy goods can be transported and maneuvered precisely. The device can also be coupled to a vehicle using the coupling unit. In this context, the wheels are also used, so that the device can be used as a vehicle trailer. This is particularly advantageous when the goods are to be transported over relatively long distances. In summary, the device can therefore be used as a handcart or as a vehicle trailer. Depending on the situation, the device can therefore be moved by hand or by means of a vehicle. In this respect, the device is universally applicable. It therefore facilitates the transport of goods, which in particular include a hand-held power tool.

[0006] In the context of the present invention, the vehicle is in particular a two-wheeler or a three-wheeler. Such vehicles are particularly compact and maneuverable, making them particularly well-suited for use in inner-city areas. The fact that the device comprises both a coupling unit and a handle unit means that no reloading is necessary if the device is first used coupled to the vehicle and is then to be operated manually via the handle unit, or vice versa. The two-wheeler is preferably a motor-driven two-wheeler or a motor-free two-wheeler, i.e. a two-wheeler that is driven purely by human muscle power. Examples of motor-driven two-wheelers are motorcycles, scooters, e-bikes, and pedelecs. An example of a motor-free two-wheeler is a bicycle. A three-wheeler can also be a motor-driven three-wheeler or a motor-free three-wheeler, i.e.a tricycle that is powered purely by human muscle power.

[0007] According to one variant, the storage platform is rotatably mounted on the frame. The storage platform can either assume a transport configuration or a working configuration by rotating relative to the frame. In the working configuration, the storage platform essentially rests against the frame. In this context, it can also be said that the storage platform extends essentially parallel to the frame, with an imaginary connecting line between the first end of the frame and the second end of the frame defining the direction of extension of the frame. The working configuration of the storage platform is therefore space-saving compared to the transport configuration. The device can therefore be converted into a space-saving configuration when the storage platform is not needed to transport goods. This applies in particular in situations in which the hand-held power tool is used, i.e. operated, to machine a workpiece.If this takes place in confined spaces, for example in an apartment or on a construction site, the available working space can be increased by converting the storage platform into the working configuration.

[0008] In one example, the device comprises a locking unit designed to lock the storage platform in the transport configuration and / or in the working configuration. By means of such a locking unit, the storage platform can be prevented from undesirably leaving the transport configuration and / or the working configuration. This increases the operational reliability of the device. The device can also comprise a supporting wall, wherein the supporting wall is provided on the frame and is located on the same side of the frame on which the storage platform protrudes from the frame in the transport configuration. The supporting wall is designed to support a transport item present on the storage platform. Thus, the transport item rests both on the storage platform and on the supporting wall. It is thus mounted relatively securely on the device, so that it can be transported with a high degree of reliability.

[0009] In one embodiment, the storage platform and the supporting wall complement each other in the working configuration to form a level work surface. The work surface can be used to store a workpiece or raw material to be machined. Such a work surface can be oriented essentially horizontally. In this context, the device can also be referred to as a work table. Consequently, the device not only serves to transport at least one hand-held power tool and, if applicable, other transport items, but is also helpful when using the hand-held power tool to machine a workpiece or raw material. This is particularly advantageous when the hand-held power tool is used outside a workshop, for example in a home or on a construction site where no work surface is available.

[0010] In the present example, the work support comprises at least two surfaces, one of which is formed by a side of the storage platform. The other surface is formed by a side of the support wall, which can also be referred to as the support surface. These surfaces lie in a common plane. The surfaces can be directly adjacent to one another. Alternatively, a gap or interruption can be provided between the two surfaces. The gap or interruption is preferably dimensioned such that it does not hinder the support of a workpiece. For example, the gap or interruption is small compared to the dimensions of the workpiece or raw material. The workpiece can therefore be machined precisely and reliably using the work support.

[0011] According to one example, at least one support leg is provided on the frame in the area of ​​the second support. Using the at least one support leg, the device can be placed stably and reliably on a surface. Advantageously, the wheels are then raised off the surface, so that the device is no longer supported on the surface by the wheels. This is particularly the case when the work surface is used.

[0012] According to one variant, the base can optionally assume a use position and a retracted position. The base can only be used in the use position, meaning that the device can only be placed on a surface using the base in the use position. In the retracted position, the base is arranged on the frame in a space-saving manner. This prevents the base from becoming obstructive when not in use. For example, the base is pivotally mounted on the frame so that it can be rotated from the use position to the retracted position and vice versa.

[0013] Variants of the device are also conceivable in which two feet are provided on the frame in the area of ​​the second support. These two feet allow the device to be placed particularly stably and reliably on a surface. Compared to the version with one foot, the two feet offer greater protection against tipping. As before, the wheels are advantageously raised from the surface when the two feet are in use. This is especially true when the work surface is in use.

[0014] According to one variant, the two feet in the area of ​​the second stand can each optionally assume a use position and a retracted position. The feet can only be used in the use position, i.e. the device can only be placed on a surface using the feet in the use position. In the retracted position, the feet are arranged on the frame in a space-saving manner. This prevents the feet from causing interference when they are not in use. For example, the feet are rotatably mounted on the frame so that they can each be turned optionally from the use position to the retracted position and vice versa. In a further example, at least one foot is provided on the frame in the area of ​​the first stand. The device can also be placed on a surface in a stable and reliable manner using this at least one foot.This is especially the case when the work surface is used.

[0015] According to one variant, the base in the area of ​​the first support can also assume either a use position or a retracted position. The base can only be used in the use position, i.e., only in the use position can the device be placed on a surface using the base. In the retracted position, the base is arranged on the frame in a space-saving manner. This prevents the base from becoming a nuisance when not in use. For example, the base is pivotally mounted on the frame so that it can be rotated from the use position to the retracted position and vice versa.

[0016] Variants of the device are also conceivable in which two feet are provided on the stand in the area of ​​the first support. These two feet allow the device to be placed particularly stably and reliably on a surface. Compared to the version with one foot, the two feet offer greater protection against tipping. This is especially true when the work surface is used.

[0017] According to one variant, the two feet in the area of ​​the first stand can each assume a use position and a retracted position. The feet can only be used in the use position, i.e., the device can only be placed on a surface using the feet in the use position. In the retracted position, the feet are arranged on the frame in a space-saving manner. This prevents the feet from becoming a nuisance when not in use. For example, the feet are pivotally mounted on the frame so that they can be rotated from the use position to the retracted position and vice versa.When viewed along the common center axis of the wheels, a stand-side end of the at least one stand that is arranged in the area of ​​the first stand can be closer to the stand than a section of the handle unit that is at most farthest away from the stand. This of course also applies to variants in which two stands are provided. Then, when viewed along the common center axis of the wheels, the stand-side ends of the two stands in the area of ​​the first stand are closer to the stand than a section of the handle unit that is at most farthest away from the stand. In the event that the handle unit is designed as a section of the frame, the stand-side end of the stand is closer to the other sections of the frame than the section of the handle unit that is at most farthest away from the other sections of the frame. The same applies to variants in which two stands are provided.This has two effects. Firstly, the stand-side end or ends of the stand feet are set back from the user when the handle unit is in use. This gives the user sufficient space to use the handle unit, i.e. to reach the handle unit. The one stand foot or the two stands feet are not in the way. Furthermore, the device can be stored on a section of the handle unit that is as far away from the frame as possible. This means that the device can be stored on a surface above the section of the handle unit that is as far away from the frame as possible. The device can also be used as a work aid in this position. In particular, the work support can also be used in this position. The one stand foot or the two stands feet are positioned in such a way that they do not cause any interference.

[0018] According to a preferred embodiment, the supporting wall is oriented substantially horizontally when the device is mounted on the ground via the section of the handle unit that is furthest away from the frame. In this way, the work surface is also oriented substantially horizontally, so that in this context it can also be referred to as a work table. The coupling unit can comprise a drawbar, wherein a coupling piece for coupling to a counterpart on the vehicle is provided at a first drawbar end of the drawbar, and wherein a second drawbar end of the drawbar, which is opposite to the first drawbar end, is mounted on the frame in the region of the first stand. In this context, a drawbar is understood to be an elongated assembly or an elongated component.By providing a drawbar, the coupling piece can be positioned at a distance from the first support of the frame essentially corresponding to the length of the drawbar. Consequently, the coupling piece also allows the device to be coupled to counterparts on the vehicle that are set back from the vehicle's exterior height toward the interior of the vehicle. At the same time, this provides the device with sufficient freedom of movement so that it can be rotated relative to the vehicle, for example, when cornering, without colliding with parts of the vehicle.

[0019] Preferably, the drawbar is movably mounted on the frame so that the drawbar can optionally assume a use position or a retracted position. In this context, the drawbar can be mounted directly or indirectly on the frame. In one example, the drawbar is mounted on the handle unit, which is attached to the frame. In the use position, the drawbar is designed to be coupled to the vehicle. More precisely, in the use position of the drawbar, the coupling piece protrudes from the other sections of the device so that it can be easily coupled to a counterpart on the vehicle or uncoupled from the counterpart of the vehicle. In the retracted position, the drawbar is stowed on the frame in a space-saving manner so that the device is compact in relation to the drawbar and the drawbar does not restrict the use of the device as a handcart or work table.

[0020] In one example, the drawbar is pivotally mounted on the frame. Consequently, the drawbar can be rotated to move from the use position to the retracted position and vice versa. A corresponding rotation axis is preferably arranged parallel to the common center axis of the wheels. With such a configuration, the device is comparatively compact when the drawbar is in the retracted position. Furthermore, moving the drawbar from the use position to the retracted position and vice versa is simple and intuitive.

[0021] In this context, it is understood that when the drawbar is in its use position, the coupling unit as a whole is also in a use position. Similarly, when the drawbar is in the retracted position, the coupling unit as a whole is in a retracted position.

[0022] The device can further comprise a stop against which the drawbar rests in the use position. In this way, the use position of the drawbar is precisely defined. This means that the drawbar is only in the use position when it rests against the stop. Furthermore, the stop can also serve to support the drawbar in the use position. This means that the stop is designed to absorb loads that are introduced into the device via the drawbar. In particular, the stop can absorb loads that result from the drawbar being supported on the vehicle when the device is coupled to the vehicle by means of the coupling unit. The stop therefore also serves to reliably and stably couple the device to the vehicle.

[0023] Optionally, in this context, it can be provided that the drawbar is secured in the use position by means of a locking device. Such a locking device prevents the drawbar from leaving the use position in an undesired manner. For example, the locking device comprises a locking device. In this context, the drawbar locks in the use position and can only be moved out of the use position by overcoming an associated locking force. The drawbar is thus reliably secured in the use position. In particular, the drawbar can be locked in different angular positions relative to the frame. In this way, an angular position relative to the frame can be selected, for example, depending on a vehicle or a property of the vehicle, in particular a size of the vehicle or a wheel size of the vehicle, to which the device is to be or is coupled.In the case of a bicycle, the angle of the drawbar can be adjusted to suit the bicycle's geometry or a specific type of luggage rack. Furthermore, the different angle positions allow the distance between the device and the vehicle to which it is attached to be selected.

[0024] When viewed along the common center axis of the wheels, the use position of the drawbar and the retracted position of the drawbar can enclose an obtuse angle. This means that the drawbar sweeps an obtuse angle when it is transferred from the use position to the retracted position and vice versa. In a case in which the drawbar is oriented essentially parallel to the supporting wall and / or essentially parallel to a direction of extension of the frame in the retracted position, the obtuse angle can be measured in the same way between the supporting wall and the drawbar in the use position or between the direction of extension of the frame and the drawbar in the use position. In this context, a direction of extension of the frame is defined by an imaginary connecting line between the first end of the frame and the second end of the frame.Since an obtuse angle is greater than 90°, the drawbar must therefore cover a comparatively large angle in order to be transferred from the use position to the retracted position and vice versa. Such a large angle means that space-saving stowage of the drawbar in the retracted position can be combined with the drawbar protruding from the other components of the device in the use position, wherein the drawbar protrudes from the other components of the device in such a way that there is sufficiently large freedom of movement for the device even when the device is coupled to the vehicle. In one embodiment, the drawbar and the at least one stand, which is arranged in the region of the first stand, are mounted on the frame so as to be rotatable about a common axis of rotation. In this way, the device is compact and structurally simple.

[0025] The drawbar and the at least one support leg located in the area of ​​the first support can be mounted on the support by means of a common joint unit. This also results in a compact design of the device. Furthermore, the common joint unit ensures a structurally simple design.

[0026] Two support feet can also be provided on the frame in the area of ​​the first support. The drawbar can then be arranged between the two support feet in a direction parallel to the common center axis of the wheels. Optionally, the drawbar and the two support feet can be rotated around a common axis of rotation. This configuration also ensures that the device is compact in terms of the support feet and the drawbar.

[0027] In one example, the at least one support leg, which is arranged in the region of the first support leg, has a recess for accommodating the drawbar, at least in the drawbar's retracted position. Thus, the drawbar can be stowed in its retracted position in a particularly space-saving manner alongside the other components of the device, in particular on the support leg.

[0028] The at least one support leg, which is arranged in the area of ​​the first support leg, can be designed, at least in part, as a profile that is open on one side. The profile that is open on one side then forms the recess. The drawbar can thus be arranged, at least in the retracted position, in an open section of the profile that is open on one side. This allows the drawbar to be stowed in a space-saving manner in its retracted position. At the same time, a recess for this purpose can be created in the support leg particularly easily in this way.

[0029] When viewed along the common center axis of the wheels, the second drawbar end of the drawbar is preferably closer to the frame than a section of the handle unit that is as far away from the frame as possible. In the event that the handle unit is designed as a section of the frame, the second drawbar end of the drawbar is closer to the other sections of the frame than the section of the handle unit that is as far away from the other sections of the frame as possible. This has the effect that the second drawbar end of the drawbar is set back from a user when the handle unit is in use. This gives the user sufficient space to use the handle unit, i.e. to grip the handle unit. The drawbar is not in the way. Furthermore, as already explained, the device can be stored on a section of the handle unit that is as far away from the frame as possible without the drawbar causing any interference.This means that the device can be stored on a surface via the section of the handle unit that is furthest from the frame. Even in this position, the device can be used as a work aid. In particular, the work support can also be used in this position.

[0030] The storage platform can have at least one mechanical interface for mechanically securing a container. In particular, the container is designed to accommodate the hand-held power tool. The container can thus be arranged particularly securely and reliably on the storage platform. This prevents unwanted slipping of the container relative to the storage platform. This is particularly advantageous when the container is transported by the device at relatively high speeds, e.g., when used as a vehicle trailer, and / or when the surface on which the device is used is uneven.

[0031] The mechanical interface is preferably designed to secure the container to the storage platform in such a way that it is prevented from shifting along three mutually perpendicular directions. In other words, the mechanical interface is preferably designed to secure the container against shifting in all three spatial directions. Alternatively or additionally, the mechanical interface is designed to secure the container to the storage platform in such a way that it is prevented from rotating in three mutually perpendicular directions. In other words, the mechanical interface is preferably designed to secure the container against rotating with respect to all three spatial directions.

[0032] The mechanical interface preferably comprises one or more form-locking elements for securing the container to the storage platform. It is understood that for this purpose, the container may have one or more associated form-locking counter-elements. The one or more form-locking elements and one or more associated form-locking counter-elements each form a form-locking connection.

[0033] The storage platform can also have at least two mechanical interfaces for mechanically securing one container each. The mechanical interfaces are spaced apart from one another, so that a container can be secured to the storage platform simultaneously using each of the two mechanical interfaces. In other words, at least two containers can be secured to the storage platform simultaneously using the at least two mechanical interfaces.

[0034] Alternatively, the storage platform can have at least two mechanical interfaces for mechanically fastening a container each, wherein the mechanical interfaces are alternatives. In this example, the at least two mechanical interfaces therefore provide at least two options according to which the container can be fastened to the storage platform. A user can thus select a suitable mechanical interface depending on the situation. In this context, the fact that the at least two mechanical interfaces are alternatives means that only one of the at least two mechanical interfaces can be used at any one time. The remaining mechanical interfaces are blocked by the fastened container, i.e., cannot be used.

[0035] In one variant, the storage platform has at least one electrical interface for electrically coupling a container. In particular, the container is designed to accommodate the hand-held power tool. In this context, an electrical interface is understood to be an interface that can be used to transmit electrical power and / or electrical signals. In the second case, the electrical interface can also be referred to as a communications interface. Containers and, in particular, hand-held power tools arranged therein can thus be supplied with electrical power and / or electrical signals via this interface. It is also possible to supply the device with electrical power from the container or the hand-held power tool arranged therein via the interface.Alternatively, electrical signals can be received from the container or from the electric hand-held power tool via the interface. In this context, for example, an electrical energy storage device of an electric hand-held power tool located in the container can be charged via the interface. Electrical signals containing information about the charge level can be received via the interface.

[0036] In one exemplary embodiment, a width of the storage platform, measured along a direction parallel to the common center axis of the wheels, corresponds essentially to twice a first outer dimension of a standing area of ​​the container. Alternatively or additionally, the width of the storage platform is 50 cm to 80 cm. In a preferred embodiment, a width of the storage platform is 50 cm to 75 cm or 50 cm to 72 cm. Thus, two containers can be positioned next to one another on the storage platform, such that the at least two containers and any hand-held power tools positioned therein can be transported by means of the device. Furthermore, the width of the storage platform is selected such that it is smaller than the clear width of common doors that are installed, for example, in apartments or residential buildings.This device allows containers or general goods to be transported through such doors.

[0037] In one example, the first outer dimension is approximately 30 cm, e.g., 29.6 cm.

[0038] Accordingly, the width of the storage platform is approximately 60 cm, e.g. 59.2 cm. It is understood that in all examples in which a container is positioned on the storage platform and is optionally attached to the storage platform by means of the mechanical interface, individual containers can be positioned on the storage platform and optionally attached to the storage platform. Alternatively, stacks of containers can also be positioned on the storage platform and optionally attached to the storage platform. In this context, the containers that form the stack can be attached to one another via corresponding mechanical interfaces. Consequently, in a case in which a mechanical interface is present on the storage platform and the bottommost container of the stack is attached to the storage platform via this mechanical interface, all containers in the stack are attached to the storage platform.In this way, a large number of containers can be transported safely using the device.

[0039] In a further exemplary embodiment, a depth of the storage platform, which in the transport configuration is measured along a direction perpendicular to the common center axis of the wheels, essentially corresponds to a second external dimension of a standing area of ​​the container. Alternatively or additionally, the depth is 35 cm to 45 cm. The depth of the storage platform is also measured perpendicular to the width of the storage platform. In other words, the depth of the storage platform is coordinated with the second external dimension of the standing area of ​​the container. The container can therefore be transported safely and reliably using the storage platform. However, since the depth of the storage platform is not greater than the second external dimension of the standing area of ​​the container, the storage platform and thus the device for this task is designed to be particularly compact.

[0040] In one example, the second outer dimension is approximately 40 cm, e.g., 39.6 cm. Accordingly, the depth of the storage platform can also be approximately 40 cm, e.g., 39.6 cm.

[0041] The container can be a system box. In this context, a system box is, for example, a transport box designed to transport a hand-held power tool. The system box expediently has a system box coupling interface with which the system box can be coupled to at least one further system box in order to form a vertical stack with the further system box. Such a coupling is preferably vertically tensile. A vertically tensile coupling is in particular a coupling that can transmit a vertical tensile force. In this context, the mechanical interface of the device, in particular of the storage platform, is compatible with a system box coupling interface, comprises a system box coupling interface, or is a system box coupling interface.

[0042] Preferably, the horizontal dimensions of a system box, especially the dimensions of the system box's base, are fixed. This makes the system box compatible with other system boxes of the same system.

[0043] Optionally, the hand-held machine tool can have a machine tool interface that is designed such that it can be coupled to a system box.

[0044] In one example, the mechanical interface of the storage platform comprises at least one opening or recess designed to receive a counter-element provided on the container. The at least one opening or recess and the counter-element can interact in a form-fitting manner. The kinematically reversed case is also possible. In such a case, the mechanical interface of the storage platform comprises at least one projection designed to be received in an opening or recess on the container. Alternatively or additionally, the mechanical interface of the storage platform can comprise a movably mounted securing element. For example, the securing element can be rotatably mounted on the storage platform. Such a securing element can be referred to as a lever. Alternatively, the securing element can be slidably mounted on the storage platform.Such a securing element can be referred to as a slide. Regardless of the specific embodiment, the securing element can be designed to be selectively coupled to the container. In this way, the securing element can, on the one hand, be used to fasten the container directly to the storage platform. On the other hand, in a case in which the mechanical interface additionally has an opening, recess, or projection on the storage platform, the securing element can also be designed to prevent the opening, recess, or projection from separating from the associated counter-element. In other words, the release of a positive connection is prevented, and in such a case, the container is indirectly fastened to the storage platform by means of the securing element.

[0045] Alternatively, at least one of the two wheels can have a profile oriented along a direction of travel and / or directional. Preferably, both wheels have a profile oriented along the direction of travel and / or directional. Such a profile leads to stable straight-line travel even at comparatively high speeds. Thus, the device has stable handling, e.g., when used as a trailer attached to a vehicle.

[0046] At least one of the two wheels can include a pneumatic tire. Preferably, both wheels have pneumatic tires. The air in the pneumatic tire is more compressed and thus has a shock-absorbing effect when the device is moved on the wheels. This results in safe handling of the device, especially when used as a trailer attached to a vehicle. This is especially true at high speeds.

[0047] In one example, the pneumatic tire has a tire width of 60 mm or less, preferably 50 mm or less. More preferably, the tire width is 45 mm or less. In one example, the tire width is 40 mm. This applies in particular to both wheels. The pneumatic tires are thus relatively narrow. This results in stable straight-line stability and low rolling resistance of the device, especially at high speeds.

[0048] In another example, the device comprises a curve tilting mechanism, via which the wheels are coupled to the other components of the device. The wheels and the other components of the device can thus be tilted relative to each other when cornering, which gives the device particularly stable handling when cornering. This is especially true at high speeds and is particularly advantageous when the device is used as a vehicle trailer.

[0049] The curve tilt mechanism preferably comprises a locking unit, so that the curve tilt mechanism can be selectively locked or unlocked. The described option of tilting the wheels and the other components of the device relative to one another when cornering is only available if the curve tilt mechanism is unlocked. Otherwise, the wheels and the other components of the device cannot be tilted relative to one another. Locking the curve tilt mechanism is particularly advantageous when the device is used as a handcart or as a work table.

[0050] The device can further comprise an energy interface for the electrical and mechanical coupling of an electrical energy store. The coupling and uncoupling of the electrical energy store can preferably take place without tools. The energy interface is therefore designed such that the electrical energy store can be coupled and uncoupled manually. In this context, the energy interface preferably comprises a plurality of electrical contacts and at least one mechanical receptacle for mechanically locking the electrical energy store to the device. Electrical energy can be provided to the device by an electrical energy store via such an energy interface. The electrical energy can be used to supply electrical components and assemblies of the device, which will be explained in more detail later.For example, a stair-climbing unit, a drive unit for the wheels, a lighting device, an electrical interface of the storage platform, and / or an electrical interface elsewhere on the device can be supplied with electrical energy via the energy interface. The latter can, for example, be used to supply energy to a lighting unit for the work surface. In one example, the hand-held power tool also has an energy interface for the electrical and mechanical coupling of an electrical energy storage device. The energy interface of the hand-held power tool and the energy interface of the device are preferably of identical design. Consequently, similar energy storage devices can be coupled either to the energy interface of the device or to the energy interface of the hand-held power tool.This is advantageous because, for example, a shared supply of charged energy storage devices can be maintained for the handheld power tool and the device. The electrical energy storage device could, for example, be a rechargeable battery.

[0051] In this context, electrical energy storage devices designed to be coupled to the hand-held power tool via the power interface of the hand-held power tool can also be referred to as hand-held power tool energy storage devices or power tool energy storage devices. As already explained, the energy interface of the device in this context can be compatible with such hand-held power tool energy storage devices or power tool energy storage devices.

[0052] The present invention thus also relates to a system comprising a device according to the invention, a hand-held power tool and at least one electrical energy storage device, wherein the hand-held power tool has an energy interface and the device has an energy interface and the energy interfaces are of identical design, so that the at least one electrical energy storage device is compatible with both the energy interface of the device and the energy interface of the hand-held power tool.

[0053] The device can also include an electrical interface for connecting an electrical device. Such an electrical device can be a lighting unit for the work surface. Alternatively or additionally, such an electrical device can be a handheld power tool that is supplied with power via the electrical interface. The device thus provides a universally applicable electrical interface that can be used to supply various devices with electrical power.

[0054] Furthermore, the device can comprise at least one lighting device. The lighting device serves to increase the visibility of the device. This is particularly advantageous when the device is used in dark environments. Furthermore, this is advantageous when the device is moved at relatively high speeds. Thus, the lighting device is particularly advantageous when the device is used as a trailer on a vehicle and the vehicle is operated in a relatively dark environment, for example at night or at dusk. In this context, the lighting device can be designed as a rear light, for example. In particular, the lighting device can be designed in accordance with Section 67a of the StVZO (Road Traffic Licensing Regulations). This increases safety when using the device.

[0055] In one example, the device comprises a splash guard associated with at least one of the wheels. Preferably, a splash guard is associated with each of the wheels. Such a splash guard may be colloquially referred to as a mudguard. The splash guard has the effect of preventing unwanted contamination of transported goods.

[0056] According to one variant, the splash guard is arranged and / or configured such that the splash guard and a supporting wall, which is notionally extended in the direction of the second upright, do not intersect. Thus, the splash guard is arranged outside the area of ​​the device intended for the transport of cargo. Furthermore, the splash guard is arranged outside the work surface. This facilitates the use of the device as a vehicle trailer or handcart for transporting cargo, or as a work table.

[0057] According to one variant, the wheels are arranged and / or designed such that the splash guard and a support wall, which is notionally extended toward the second upright, do not intersect. Thus, the wheels are located outside the area of ​​the device intended for transporting cargo. Furthermore, the wheels are located outside the work surface. This facilitates the use of the device as a vehicle trailer or handcart for transporting cargo, or as a work table.

[0058] In one variant, the splash guard device surrounds the at least one associated wheel by less than 180 degrees along a circumferential direction of the associated wheel. Alternatively or additionally, the splash guard device has at least one section which has a varying radial distance from the at least one associated wheel along a circumferential direction of the at least one associated wheel. The radial distance can therefore increase or decrease along the circumferential direction. In this way, a good splash protection effect of the splash guard device is ensured. At the same time, such a configuration of the splash guard device allows the splash guard device to be provided on the device such that it is arranged outside the area of ​​the device intended for the transport of transport goods. The splash guard device can also be arranged outside the work support.

[0059] In another example, the device comprises a stair-climbing unit. The stair-climbing unit comprises, for example, two cantilevered arms, one end of which is coupled to an electric drive motor, and the other end of which is designed to be placed on a stair step, so that the device can be lifted up one step using the arms of the stair-climbing unit. This can be done repeatedly, so that the device can also climb stairs with more than one step using the stair-climbing unit.

[0060] The stair climbing unit can be designed as an optionally mountable stair climbing module. This means that a stair climbing unit can be retrofitted to a device if necessary. The stair climbing unit is designed as a self-contained unit comprising an electric drive motor, for example an electrically commutating electric motor (EC motor), and an energy interface or an energy storage unit. Due to this type of configuration, the stair climbing module only needs to be mechanically coupled to the device and is then immediately ready for operation. The same applies to uncoupling, i.e. to remove the stair climbing module, it only needs to be mechanically uncoupled from the other components of the device. In this context, it can optionally be provided that at least one switch for controlling the stair climbing module is positioned on the handle unit of the device.In this case, it is understood that the stair climbing module also has an electrical interface for selectively coupling or decoupling the switch.

[0061] Optionally, the energy interface of the stair-climber module forms the energy interface of the device. Preferably, the energy interface of the stair-climber module is the only interface of the device. In this context, the stair-climber module can have a secondary energy interface via which a drive unit for the wheels, an electrical interface of the storage platform, and / or an electrical interface elsewhere on the device can be supplied with electrical energy. In this case, when mechanically coupling the stair-climber module to the device, an electrical and / or mechanical coupling of the secondary energy interface to the drive unit for the wheels, the electrical interface of the storage platform, and / or the electrical interface elsewhere on the device must also take place.When mechanically uncoupling the stair climbing module from the device, the secondary energy interface must also be electrically and / or mechanically uncoupled.

[0062] In this context, the invention also relates to such a stair climbing module for a device according to the invention or for devices known per se for transporting and / or using at least one electric hand-held power tool. In this context, a device known per se can be designed as a handcart, in particular as a sack barrow. The device can also comprise a drive unit for driving the wheels. This is helpful both when the device is used as a handcart and when the device is used as a trailer. In both application scenarios, the drive unit can be used to assist movement of the device, so that less human muscle power is required to do so. Overall, movement of the device is made easier in this way.

[0063] In one example, the drive unit comprises at least one hub motor, preferably one hub motor for each wheel. This allows the drive unit to be structurally simple. Furthermore, such a drive unit is compact.

[0064] The object is further achieved by using a device according to the invention as a vehicle trailer, in particular as a two-wheeled trailer or a three-wheeled trailer. This allows for simple and reliable transport of cargo. The cargo preferably comprises a container with a hand-held power tool or several containers, each with a hand-held power tool. The two-wheeled vehicle is, for example, a bicycle. In this case, the device is used as a bicycle trailer.

[0065] Furthermore, the object is achieved by using a device according to the invention as a handcart. This allows a load to be transported easily and reliably. The load preferably comprises a container with a hand-held power tool or several containers, each with a hand-held power tool.

[0066] In this context, a combined use of the device according to the invention as a handcart and vehicle trailer has the advantage that reloading operations can be saved if the device is first used as a handcart and then as a vehicle trailer or vice versa.

[0067] Furthermore, the object is achieved by using a device according to the invention as a work table. The device can therefore also be used in situations where it is not required for transport. When the device is used as a work table, no separate work table needs to be transported, thus simplifying transport.

[0068] The invention is explained below using various embodiments shown in the accompanying drawings. They show:

[0069] Figures 1 a device according to the invention for transporting and / or

[0070] Use of at least one electric hand-held power tool in a perspective view, wherein a storage platform assumes a transport configuration and wherein the device can be used as a handcart,

[0071] Figure 2 shows the device of Figure 1 in another perspective view along the direction II in Figure 1,

[0072] Figure 3 shows the device from Figures 1 and 2 in a view corresponding to Figure 1, wherein the storage platform of the device assumes a working configuration,

[0073] Figure 4 shows the device from Figures 1 to 3 in a side view along a direction IV in Figure 3, wherein the storage platform of the device again assumes the working configuration,

[0074] Figures 5 and 6 show the device from Figures 1 to 4 in further perspective views, wherein the devices are each loaded with containers,

[0075] Figure 7 shows a detail VII from Figure 6 in a perspective view along the

[0076] Direction VII in Figure 6,

[0077] Figure 8 is a sectional view along a plane VIII in Figure 7, Figure 9 is a sectional view along a plane IX in Figure 7,

[0078] Figure 10 shows the device from the previous figures in a further perspective view along a direction X in Figure 1,

[0079] Figure 11 shows the device from the previous figures in a further perspective view along a direction XI in Figure 1,

[0080] Figures 12 to 14 show the device from the previous figures when used as a work table,

[0081] Figure 15 shows a detail XV of the device of Figure 11,

[0082] Figure 16 is an exploded view of Figure 15,

[0083] Figures 17 and 18 show the device from the previous figures when used as a vehicle trailer,

[0084] Figure 19 shows a detail XIX of the device of Figure 2,

[0085] Figure 20 is a view of the device of Figure 19 along a direction XX,

[0086] Figure 21 shows a detail XXI of the device of Figure 19,

[0087] Figure 22 shows a device according to the invention according to another embodiment for transporting and / or using at least one electric hand-held power tool in a side view, wherein the device assumes a first configuration

[0088] Figure 23 shows the device from Figure 22 in a view corresponding to Figure 22, wherein the device assumes a second configuration, Figure 24 shows the device from Figures 22 and 23 in a view corresponding to Figure 22, wherein the device assumes a third configuration,

[0089] Figure 25 shows the device from Figures 22 to 24 in a view corresponding to Figure 22, the device assuming a fourth configuration,

[0090] Figure 26 shows the device from Figures 22 to 25 in a view corresponding to Figure 22, the device assuming a fifth configuration, and

[0091] Figure 27 shows the device from Figures 22 to 26 when used as

[0092] Vehicle trailer.

[0093] Figure 1 shows a device 10 for transporting and / or using at least one hand-held power tool.

[0094] The device 10 comprises a frame 12, which in the illustrated embodiment is designed as a tubular construction.

[0095] In this context, the frame 12 comprises a first longitudinal tube 14a and a second longitudinal tube 14b. The two longitudinal tubes 14a, 14b are arranged substantially parallel and spaced apart from each other (see also Figure 2).

[0096] Furthermore, the frame 12 comprises a total of three cross tubes 16a, 16b, 16c. Each cross tube 16a, 16b, 16c connects the two longitudinal tubes 14a, 14b.

[0097] A first cross tube 16a is arranged in the region of a first upright 12a of the frame 12. The second cross tube 16b is arranged in the region of a second upright 12b of the frame 12. The second upright 12b of the frame 12 is arranged opposite the first upright 12a of the frame 12.

[0098] The third cross tube 16c is positioned between the first cross tube 16a and the second cross tube 16b.

[0099] The cross tubes 16a, 16b, 16c run parallel to each other.

[0100] In the illustrated embodiment, the longitudinal tubes 14a, 14b and the transverse tubes 16a, 16b, 16c are integrally connected to one another, for example by welds.

[0101] The frame 12 can therefore also be described as ladder-shaped, with the two longitudinal tubes 14a, 14b being associated with ladder stiles and the cross tubes 16a, 16b, 16c with ladder rungs.

[0102] The longitudinal tubes 14a, 14b and the transverse tubes 16a, 16b, 16c span a standing plane 18.

[0103] With respect to the frame plane 18, the longitudinal tubes 14a, 14b are bent toward the same side in the region of the first frame 12a of the frame 12, so that the longitudinal tubes 14a, 14b protrude from the frame plane 18 at the first frame 12a of the frame 12. The bent sections of the longitudinal tubes 14a, 14b form an obtuse angle with the remaining sections of the longitudinal tubes 14a, 14b.

[0104] A handle unit 20, which will be explained in more detail later, is attached to the curved sections of the longitudinal tubes 14a, 14b. In the illustrated embodiment, the handle unit 20 is designed as a separate unit from the frame 12.

[0105] The device 10 further comprises two angular connecting pipes 22a, 22b (see Figures 1, 2, 10, and 19). A first connecting pipe 22a is attached to the first longitudinal pipe 14a by a first connecting pipe end. The second connecting pipe end of the first connecting pipe 22a is designed as an axle stub 24a for a first wheel 26a. In this context, the first wheel 26a is rotatably mounted on the axle stub 24a.

[0106] A second connecting pipe 22b is attached to the second longitudinal pipe 14b by a first connecting pipe end. The second connecting pipe end of the second connecting pipe 22b is designed as an axle stub 24b for a second wheel 26b. In this context, the second wheel 26b is rotatably mounted on the axle stub 24b.

[0107] Thus, the wheels 26a, 26b are provided in the area of ​​the second stand 12b of the frame 12.

[0108] In this context, the first connecting pipe 22a is integrally connected to the first longitudinal pipe 14a and the second connecting pipe 22b is integrally connected to the second longitudinal pipe 14b, e.g. via weld seams.

[0109] The two axle stumps 24a, 24b are oriented along a common central axis 28.

[0110] This central axis 28 also represents a central axis of the wheels 26a, 26b, around which the wheels 26a, 26b are rotatable.

[0111] In the illustrated embodiment, each of the wheels 26a, 26b is equipped with a drive unit 30a, 30b in the form of a hub motor unit. The wheels 26a, 26b can thus be driven in rotation by the respective associated drive unit 30a, 30b.

[0112] Furthermore, the wheels 26a, 26b are each equipped with pneumatic tires 32a, 32b.

[0113] The pneumatic tires 32a, 32b also each have a profile 34a, 34b oriented along a running direction.

[0114] The pneumatic tires 32a, 32b have a width BR of approximately 40 mm (see Figure 1). Furthermore, each of the wheels 26a, 26b is assigned a splash guard 36a, 36b. A first splash guard 36a is attached to the first longitudinal tube 14a, and a second splash guard 36b is attached to the second longitudinal tube 14b.

[0115] The first splash guard 36a extends at a certain distance around a portion of the circumference of the first wheel 26a, so that dirt or water stirred up by the first wheel 26a is intercepted as far as possible by the first splash guard 36a. In simple terms, the first splash guard 36a can be referred to as a protective plate for the first wheel 26a.

[0116] The second splash guard 36b extends at a certain distance around a portion of the circumference of the second wheel 26b, so that any dirt or water stirred up by the second wheel 26b is intercepted as far as possible by the second splash guard 36b. In simple terms, the second splash guard 36b can be referred to as a protective plate for the second wheel 26b.

[0117] In addition, the device 10 comprises a lighting device 38, which in the example shown comprises a first lighting unit 38a arranged on the first splash guard device 36a and a second lighting unit 38b arranged on the second splash guard device 36b.

[0118] In the illustrated embodiment, the two lighting units 38a, 38b are designed to illuminate red. The lighting device 38 therefore represents a rear light unit of the device 10. This will be explained in more detail below.

[0119] In the area of ​​the second upright 12b of the frame 12, a storage platform 40 is further coupled to the frame 12. In the illustrated embodiment, the storage platform 40 is rotatable relative to the frame 12 about a rotation axis 42. In this context, the storage platform 40 is rotatably mounted on the first longitudinal tube 14a by means of a bolt 44a and rotatably mounted on the second longitudinal tube 14b by means of a bolt 44b.

[0120] The storage platform 40 can assume a transport configuration in which it protrudes from the frame 12 essentially perpendicular to the frame plane 18. The transport configuration can be seen in particular in Figures 1, 2, 5, and 6.

[0121] Furthermore, the storage platform 40 can assume a working configuration. In the working configuration, the storage platform 40 essentially rests against the frame 12. The storage platform 40 extends essentially parallel to the frame plane 18. The working configuration can be seen in particular in Figures 3 and 4, as well as 12 to 14.

[0122] The working configuration and the transport configuration can be achieved optionally by rotating the storage platform 40 relative to the frame 12.

[0123] The storage platform 40 is designed to accommodate a transport item 45. It is understood that for this purpose, the storage platform 40 must assume the transport configuration.

[0124] If the device 10 is grasped by a user at the handle unit 20 and tilted slightly about the common central axis 28 of the wheels 26a, 26b, the device 10 can consequently be used as a handcart for transporting the transported goods 45.

[0125] The handcart is designed like a sack barrow. Device 10 can therefore be used as a handcart or sack barrow.

[0126] In the illustrated embodiment, the transported goods 45 comprise several containers 46 (see in particular Figures 5 and 6). Each of the containers 46 is designed to accommodate a hand-held power tool 48.

[0127] Since the specific type of handheld power tools 48 is not important here, they are shown only schematically in Figures 5 and 6. In the illustrated embodiment, the containers 46 are system boxes. For ease of explanation, the containers and system boxes are therefore provided with the same reference numerals.

[0128] The system boxes 46 are characterized by the fact that they all have the same length L and the same width B. The length L and the width B span a base area of ​​the respective system box 46.

[0129] Furthermore, each of the system boxes 46 has a lower mechanical interface 50 and an upper mechanical interface 52.

[0130] In the illustrated embodiment, the lower mechanical interface 50 of each system box 46 comprises a total of four feet 54a, 54b, 54c, 54d, each of which is arranged in a corner of a base plate of the system box 46.

[0131] For the sake of clarity, only the feet 54a, 54b, 54c, 54d are provided with a reference symbol in Figure 5.

[0132] In addition, each lower mechanical interface 50 has two protruding undercut elements 56 which project downwards from the base plate (see in particular Figures 7 and 9).

[0133] In the illustrated embodiment, two of the feet 54a, 54b, 54c, 54d, more precisely the feet 54b and 54d, form protruding undercut elements 56.

[0134] The upper mechanical interface 52 includes four recesses 58a, 58b, 58c, 58d. The recesses 58a, 58b, 58c, 58d are each formed in a corner of a cover plate of the system box 46. Furthermore, each of the four recesses 58a, 58b, 58c, 58d is configured to receive a foot 54a, 54b, 54c, 54d.

[0135] For clarity, only the recesses 58a, 58b, 58c, and 58d are provided with a reference symbol in Figure 5. Each upper mechanical interface 52 also has a recess or opening 60 with an undercut surface 62.

[0136] In this context, each recess or opening 60 is designed to receive one of the projecting undercut elements 56, wherein the respective projecting undercut element 56 engages behind the undercut surface 62 along a central axis of the recess or opening 60.

[0137] In the illustrated examples, the recess or opening 60 coincides with the recesses 58a, 58b, 58c, 58d designed to receive the feet 54a, 54b, 54c, 54d, which are designed as protruding undercut elements 56. In the present case, this applies to the recesses 58b, 58d.

[0138] Furthermore, the upper mechanical interface 52 comprises a securing element 64 (see Figures 5 and 6).

[0139] In the illustrated embodiments, the locking element 64 is designed as a rotatably mounted lever that can be rotated between a locking position and a release position. In the locking position, the locking element engages behind a projection 65, which is formed as part of the lower mechanical interface 50.

[0140] The undercut elements 56 and the securing element 64 of a system box 46 are thus arranged on opposite sides of the system box 46.

[0141] Since the system boxes 46 have the same length L and the same width B and each system box has an upper mechanical interface 52 and a lower mechanical interface 50, the system boxes 46 can be stacked along a stacking direction 66.

[0142] Each foot 54a, 54b, 54c, 54d of an upper system box 46 engages in an associated recess 58a, 58b, 58c, 58d of a lower system box 46 of the same stack. Due to this fact, the system boxes 46 cannot be displaced relative to one another either in a direction parallel to the length L or along a direction parallel to the width B. Such displacement is blocked by the engagement of the feet 54a, 54b, 54c, 54d in the respective recess 58a, 58b, 58c, 58d.

[0143] In addition, the protruding undercut elements 56, which in the present case are designed as features of the feet 54b and 54d, are arranged in the respectively associated recess or opening 60, which in the present case are formed by the recesses 58b, 58d.

[0144] The protruding undercut elements 56 each engage behind the undercut surfaces 62.

[0145] It is understood that the stacked system boxes 46 must be slightly rotated relative to each other so that the undercut elements 56 can engage behind the respective associated undercut surfaces 62. For this purpose, the upper system box 46 can be slightly lifted on one side.

[0146] Due to the engagement of the undercut elements 56 in the respectively assigned undercut surfaces 62, system boxes 46 stacked one above the other are now positively connected to one another along the stacking direction 66.

[0147] To prevent this form fit from being undesirably released, the securing element 64 is also moved into the securing position so that it engages behind the associated projection 65 on the respective system box 46 located above it. This prevents the respective upper system box from being rotated by slightly lifting one side in such a way that the protruding undercut elements 56 become disengaged from the respective associated undercut surface 62.

[0148] Consequently, the stacks of system boxes 46 shown in Figures 5 and 6 are interconnected units. Furthermore, the storage platform 40 in the illustrated embodiment comprises a total of three mechanical interfaces 68a, 68b, and 68c (see in particular Figures 1, 5, and 6).

[0149] The mechanical interfaces 68a, 68b, 68c of the storage platform 40 are designed analogously to an upper mechanical interface 52 of the system boxes 46.

[0150] This means that each of the three mechanical interfaces 68a, 68b, 68c includes recesses each configured to receive one of the feet 54a, 54b, 54c, 54d of a system box 46.

[0151] In the illustrated embodiment, the mechanical interface 68a comprises a total of four such recesses, all of which are designated 70a.

[0152] The mechanical interface 68a also includes two recesses 72a, each with an undercut surface 74a. The recesses 72a are each designed to receive a protruding undercut element 56 of a system box 46, which engages behind the undercut surface 74a.

[0153] Since an undercut element 56 is formed on each foot 54b and foot 54d, the recesses 70a associated with each foot 54b and 54d coincide with the recesses 72a in the mechanical interface 68a. In other words, the recesses 70a associated with each foot 54b and 54d each have an undercut surface 74a.

[0154] These are the recesses 70a, which are arranged adjacent to the frame 12.

[0155] Furthermore, the mechanical interface 68a includes a securing element 76a. The securing element 76a is designed as an elongated lever and is rotatably mounted on the storage platform 40 so that it can be transferred into a securing position in which it engages behind a projection 65 on a system box 46.

[0156] The mechanical interface 68b comprises a total of only two recesses 70b for receiving one of the feet 54a, 54b, 54c, 54d of a system box 46. When a system box 46 is coupled to the interface 68b, two of the feet 54a, 54b, 54c, 54d protrude beyond the storage platform 40 in the areas of the beveled corners of the storage platform 40.

[0157] The mechanical interface 68b also includes two recesses 72b, each with an undercut surface 74b. The recesses 72b are each configured to receive a protruding undercut element 56 of a system box 46, which engages behind the undercut surface 74b.

[0158] Since an undercut element 56 is formed on each foot 54b and foot 54d, the recesses 70b associated with each foot 54b and 54d coincide with the recesses 72b in the mechanical interface 68b. In other words, the recesses 70a associated with each foot 54b and 54d each have an undercut surface 74b.

[0159] Thus, those feet 54b, 54d that form the undercut elements 56 are received in the recesses 70b. The other two feet 54a, 54c protrude beyond the bearing platform 40 in the areas of the beveled corners of the bearing platform 40.

[0160] Furthermore, the mechanical interface 68b includes a securing element 76b. The securing element 76b is designed as an elongated lever and is rotatably mounted on the support platform 40 so that it can be transferred into a securing position in which it engages behind a projection 65 on a system box 46.

[0161] The mechanical interface 68c also comprises a total of only two recesses 70c for receiving one of the feet 54a, 54b, 54c, 54d of a system box 46. When a system box 46 is coupled to the interface 68c, two of the feet 54a, 54b, 54c, 54d again protrude beyond the storage platform 40 in areas of the beveled corners of the storage platform 40.

[0162] The mechanical interface 68c also includes two recesses 72c, each with an undercut surface 74c. The recesses 72c are each designed to receive a protruding undercut element 56 of a system box 46, which engages behind the undercut surface 74c.

[0163] Since an undercut element 56 is formed on each foot 54b and foot 54d, the recesses 70c associated with each foot 54b and 54d coincide with the recesses 72c in the mechanical interface 68c. In other words, the recesses 70c associated with each foot 54b and 54d each have an undercut surface 74c.

[0164] Thus, those feet 54b, 54d that form the undercut elements 56 are received in the recesses 70c. The other two feet 54a, 54c protrude beyond the bearing platform 40 in the areas of the beveled corners of the bearing platform 40.

[0165] Furthermore, the mechanical interface 68c includes a securing element 76c. The securing element 76c is designed as an elongated lever and is rotatably mounted on the bearing platform 40 so that it can be transferred into a securing position in which it engages behind a projection 65 on a system box 46.

[0166] The positive connection formed by one of the recesses 72c, ie one of the recesses 70c, and the undercut element 56 formed on the foot 54d is shown in detail in Figure 9.

[0167] The coupling effected by means of the securing element 76c can be seen in detail in Figure 8.

[0168] It is understood that the recesses 72a, 72b, ie also the recesses 70a and 70b, as well as the securing elements 76a, 76b are designed in the same way as the recess 72c or the securing element 76c.

[0169] As can be seen particularly from Figures 1 and 6, the mechanical interfaces 68b and 68c are arranged at a distance from one another such that a container can be simultaneously secured to the storage platform 40 by means of each of the two mechanical interfaces 68b, 68c. More precisely, in the embodiment according to Figure 6, two stacks of containers 46 are simultaneously secured to the storage platform 40, each stack being coupled to a mechanical interface 68b, 68c.

[0170] The mechanical interface 68a represents an alternative with respect to the mechanical interfaces 68b, 68c. This means that in a case where a container 46 or a stack of containers 46 is coupled to the interface 68a, the mechanical interfaces 68b, 68c cannot be used (see in particular Figures 1 and 5).

[0171] Similarly, the interface 68a cannot be used if a container or a stack of containers 46 is coupled to one of the interfaces 68b, 68c.

[0172] Put simply, the storage platform 40 is designed to accommodate a container 46 or a stack of containers 46. In this case, the container 46 or the stack of containers 46 is decimated essentially in the center of the storage platform 40.

[0173] Alternatively, the storage platform can accommodate two containers 46 arranged side by side or two stacks of containers 46 arranged side by side.

[0174] To enable this functionality, the width BP of the storage platform 40, measured along a direction parallel to the common center axis 28 of the wheels 26a, 26b, essentially corresponds to twice a first outer dimension of a standing surface of the containers 46. In the illustrated embodiment, the first outer dimension is the width B of the system boxes 46.

[0175] Furthermore, a depth TP of the storage platform 40, which in the transport configuration is measured along a direction perpendicular to the common center axis 28 of the wheels 26a, 26b, essentially corresponds to a second outer dimension of a standing surface of the container 46. In the illustrated embodiment, the second outer dimension is the length L of the system boxes 46. Furthermore, the storage platform 40 comprises a total of three electrical interfaces 78a, 78b, 78c. In each case, one of the electrical interfaces 78a, 78b, 78c is assigned to one of the mechanical interfaces 68a, 68b, 68c. In this context, the electrical interface 78a is designed as a grouping of electrical contacts. Furthermore, the electrical interface 78a is designed to be electrically coupled to a container 46, which has an associated electrical container interface and is mechanically coupled to the mechanical interface 68a.

[0176] The electrical interface 78b is also configured as an array of electrical contacts. Furthermore, the electrical interface 78b is configured to be electrically coupled to a container 46, which has an associated electrical container interface and is mechanically coupled to the mechanical interface 68b.

[0177] The electrical interface 78c is also configured as an array of electrical contacts. Furthermore, the electrical interface 78c is configured to be electrically coupled to a container 46, which has an associated electrical container interface and is mechanically coupled to the mechanical interface 68c.

[0178] In the figures, the electrical interfaces 78a, 78b, 78c are shown only schematically.

[0179] The device 10 further comprises a support wall 80.

[0180] The support wall 80 is attached to the frame 12. More precisely, the support wall 80 is attached to a side of the frame 12 on which the storage platform 40 protrudes from the frame 12 in the transport configuration.

[0181] The support wall 80 runs parallel to the frame plane 18 and is oriented substantially perpendicular to the storage platform 40 when the storage platform 40 is in the transport configuration.

[0182] On a side facing away from the frame 12, the support wall 80 has a support surface 82. The support surface 82 serves, on the one hand, to support the transported goods 45. This is particularly necessary when the device 10 is used as a handcart or sack barrow, so that the transport platform 40 does not run horizontally during transport (see Figures 5 to 7).

[0183] A further function of the support wall 80 is that in the working configuration of the storage platform 40, the storage platform 40 and the support wall 80 complement each other to form a flat working support 84.

[0184] The work support 84 comprises the support surface 82 and one side of the storage platform 40. The side of the storage platform 40 which is part of the work support 84 is opposite the side on which the mechanical interfaces 68a, 68b, 68c are provided.

[0185] In this context, the storage platform 40 can be converted into the working configuration independently of the spatial orientation of the device 10. This can be seen, for example, in Figures 3 and 4.

[0186] Alternatively, however, it is also possible to bring the work support 84 into a horizontal orientation so that the device 10 can be used as a work table.

[0187] This is explained in detail below using Figures 12 to 14.

[0188] The device 10 has two feet 86a, 86b in the area of ​​the second stand 12b of the frame 12.

[0189] The first support foot 86a is rotatably coupled to the first longitudinal tube 14a via a bearing element 88a. The bearing element 88a is designed as a sheet metal assembly.

[0190] The second support foot 86b is rotatably coupled to the second longitudinal tube 14b via a bearing element 88b. The bearing element 88b is also designed as a sheet metal assembly. The support feet 86a, 86b can thus optionally assume a retracted position in which they are oriented essentially parallel to the frame 12. This is particularly clearly visible in Figures 2 and 4. Alternatively, the support feet 86a, 86b can optionally assume a use position in which they protrude from the frame 12. This is particularly clearly visible in Figures 12 and 13.

[0191] A base is also provided in the area of ​​the first upright 12a of the frame 12. This is referred to here as base 86c.

[0192] Therefore, only a single support foot 86c is provided on the first support 12a of the frame 12.

[0193] This base 86c can also optionally assume a retracted position, in which a free base end of the base 86c rests in the area of ​​the frame 12. More precisely, the free base end rests against the support wall 80 on a side of the support wall 80 facing away from the support surface 82. This is particularly clearly visible in Figures 2 and 4.

[0194] Alternatively, the base 86c can optionally assume a usage position in which it protrudes from the frame 12. This is particularly clearly visible in Figures 12 and 13.

[0195] Consequently, the device 10 can be used as a work table when all feet 86a, 86b, 86c are in their respective operating positions. The respective lengths of the feet 86a, 86b, 86c are selected such that the support wall 80 extends substantially horizontally when the device rests on the feet 86a, 86b, 86c. Likewise, in this position, the storage platform 40 extends substantially horizontally when in the working configuration.

[0196] An alternative configuration of the work table is shown in Figure 14. In this configuration, the feet 86a, 86b, 86c are each in the retracted position. The device 10 rests on the wheels 26a, 26b and on a section of the handle unit 20 that is at its maximum distance from the support 12. The distance between the section of the handle unit 20 that is at its maximum distance from the support 12 and the radius of the wheels 26a, 26b are coordinated such that, in this configuration as well, the support wall 80 and the storage platform 40 extend substantially horizontally in their working configuration.

[0197] In this way, a work table is formed which is low compared to, for example, Figure 13.

[0198] The device 10 also comprises a coupling unit 90 for coupling to a vehicle 91, which in the present example is a bicycle (see Figures 17 and 18).

[0199] The coupling units 90 comprise a drawbar 92 and a coupling piece 94.

[0200] The coupling piece 94 is designed to be coupled to a counterpart 96 on the vehicle 91 and is provided on a first drawbar end of the drawbar 92.

[0201] A second drawbar end of the drawbar 92 is mounted on the frame 12 in the area of ​​the first support 12a.

[0202] More precisely, the second drawbar end of the drawbar 92 is mounted on the handle unit 20 (see also Figures 10 and 11).

[0203] In this context, the handle unit 20 is substantially H-shaped when viewed from above, as in Figures 10 and 11. The handle unit 20 comprises a central portion 98 arranged substantially parallel to the cross tubes 16a, 16b, 16c.

[0204] Two connecting parts 100a, 100b of the handle unit 20 protrude from this central part 98 in the direction of the frame 12. A first connecting part end of each connecting part 100a, 100b is connected to a central part end of the central part 98. An opposite second connecting part end of each connecting part 100a, 100b, i.e., the connecting ends of the connecting parts 100a, 100b facing away from the central part 98, are each connected to one end of a longitudinal tube 14a, 14b. Two handle parts 102a, 102b of the handle unit 20 protrude from the central part in a direction away from the frame 12. The handle parts 102a, 102b are designed to be grasped by a user of the device 10.

[0205] In this case, the first handle ends of the handle parts 102a, 102b are each connected to a middle part end of the middle part 98. Opposing second handle ends of each handle part 102a, 102b, i.e., the handle ends of the handle parts 102a, 102b facing away from the middle part 98, are bent toward each other in a direction parallel to the middle part 98. A gap remains between the second handle ends of the handle parts 102a, 102b. The second handle ends of the handle parts 102a, 102b therefore do not touch each other.

[0206] In the present case, the middle part 98, the handle parts 102a, 102b and the connecting parts 100a, 100b are made in one piece.

[0207] Furthermore, several control elements 107 are arranged on the handle unit 20 for operation. One or more of these control elements 107, which are designed, for example, as electrical switches, can be designed to control and / or operate the drive units 30a, 38b, the lighting device 38, and / or a stair climbing unit 130, which will be explained below.

[0208] The second drawbar end of the drawbar 92 is pivotally mounted on the central part 98. More precisely, the second drawbar end of the drawbar 92 is mounted centrally on the central part 98 along the direction of extension of the central part 98. The second drawbar end of the drawbar 92 is thus mounted indirectly, ie, via the handle unit 20, on the frame 12.

[0209] The base 86c and the drawbar 92 are mounted on the handle unit 20, ie indirectly on the frame 12, by means of the same joint unit 104.

[0210] The drawbar 92 and the base 86c are rotatable about a common rotation axis 106. Using the joint unit 104, the drawbar 92 can assume either a use position or a retracted position by rotating about the common rotation axis 106.

[0211] In the use position, the drawbar 92 protrudes from the other components of the device 10 in such a way that the coupling piece 94 can be coupled to the counterpart 96 (see Figures 17 and 18).

[0212] In the retracted position, the drawbar 92 is at least partially received in a recess 108 on the base 86c (see Figure 2 and Figure 11).

[0213] For this purpose, the base 86c in the illustrated embodiment is designed as an open profile with a C- or U-shaped cross-section. The profile forms the recess 108. In other words, the drawbar 92 can be accommodated inside the C- or U-shaped cross-section when the drawbar 92 is in the retracted position.

[0214] Due to the fact that the base 86c and the drawbar 92 are articulated to the central part 98 of the handle unit 20 by means of the common joint unit 104, when viewed along the common central axis 28 of the wheels 26a, 26b, a standing-side base end of the base 86c is closer to the frame 12 than a section of the handle unit 20 that is at its maximum distance from the frame 12.

[0215] The same applies to the drawbar 92, i.e., when viewed along the common center axis 28 of the wheels 26a, 26b, the second drawbar end of the drawbar 92 is closer to the frame 12 than a section of the handle unit 20 that is at the maximum distance from the frame 12.

[0216] This has the advantage that a user of the device 10 who wishes to move the device 10 by means of the handle unit 20 can grip the handle parts 102a, 102b and the middle part 98 without having to reach past the drawbar 92 or the base 86c.

[0217] Furthermore, the device 10 can be used as a work table in the configuration shown in Figure 14 without the drawbar 92 or the support leg 86c being obstructive. The common joint unit 104 further includes stops that define the use position and the retracted position of the support leg 86c.

[0218] This is achieved by the joint unit 104 comprising a first joint shell 110, which is fixedly connected to the base 86c. The joint shell 110 also has two pivot pins 112a, 112b, which are arranged on opposite sides of the joint shell 110 and extend along the common axis of rotation 106. The pivot pins 112a, 112b are arranged in respective recesses on the central part 98 of the handle unit 20 (see Figures 15 and 16).

[0219] However, the radius of the pivot pins 112a, 112b is not constant. Rather, each pivot pin 112a, 112b includes a circumferential section 114a, 114b with an enlarged radius. These circumferential sections 114a, 114b thus form radial jumps compared to the other circumferential sections.

[0220] Radial pockets 116a, 116b corresponding to the peripheral sections 114a, 114b are provided on the central part 98 of the handle unit 20, more precisely within the recesses on the central part 98. Only the radial pocket 116a is shown in Figure 16. However, the radial pocket 116b is designed in the same way.

[0221] The radial pockets 116a, 116b are larger in the circumferential direction than the circumferential sections 114a, 114b. In this way, an angular range W1 can be defined within which the base 86c can be rotated relative to the central part 98. A first end of this angular range is defined by a stop surface 118a at a first circumferential end of the radial pockets 116a. A second end of this angular range W1 is defined by a stop surface 118b at a second circumferential end of the radial pocket 116a. The base 86c can therefore be rotated relative to the central part 98 until the circumferential sections 114a, 114b abut the associated stop surfaces 118a or until the circumferential sections 114a, 114b abut the associated stop surfaces 118b. The joint unit 104 further comprises a second joint shell 120 which is fixedly connected to the drawbar 92.The joint shell 120 further includes two pivot pins 122a, 122b, which are arranged on opposite sides of the joint shell 120 and extend along the common axis of rotation 106. The pivot pins 122a, 122b are arranged in respective recesses on the central part 98 of the handle unit 20.

[0222] However, the radius of the pivot pins 122a, 122b is not constant. Rather, each of the pivot pins 122a, 122b includes a circumferential section 124a, 124b with a reduced radius. These circumferential sections 124a, 124b thus form radial recesses relative to the remaining circumferential sections.

[0223] On the central part 98 of the handle unit 20, more precisely within the recesses on the central part 98, radial projections 126a, 126b corresponding to the circumferential sections 124a, 124b are provided. In the illustration according to Figure 16, only the radial projection 126a is visible. The radial projection 126b, however, is designed in the same way.

[0224] The radial projections 126a, 126b are smaller in the circumferential direction than the circumferential sections 124a, 124b. In this way, an angular range W2 can be defined within which the drawbar 92 can be rotated relative to the central part 98. A first end of this angular range W2 is defined by a stop surface 128a at a first circumferential end of the radial projection 126a. A second end of this angular range W2 is defined by a stop surface 128b at a second circumferential end of the radial projection 126a. The drawbar 92 can therefore be rotated relative to the central part 98 until the circumferential sections 124a, 124b abut the associated stop surfaces 128a or until the circumferential sections 124a, 124b abut the associated stop surfaces 128b.

[0225] In this context, the radial projections 126a, 126b rest against the stop surfaces 128a when the drawbar 92 is in the use position. - M -

[0226] To put it simply, the drawbar 92 rests against a stop when it is in the use position.

[0227] The usage position of the drawbar 92 is therefore defined by the stop surface 128a.

[0228] Furthermore, loads resulting from the coupling of the device 10 to the vehicle 91 can be introduced into the device 10 via the stop surface 128a.

[0229] As can be seen in particular in Figure 18, in the present example, when viewed along the common central axis 28 of the wheels 26a, 26b, the use position of the drawbar 92 and the retracted position of the drawbar 92 enclose an obtuse angle W.

[0230] The device 10 further comprises a stair climbing unit 130, which in the illustrated embodiment is designed as an optionally mountable stair climbing module 132.

[0231] The stair climber module 132 comprises a central part 134 in which an electric drive unit (not shown in detail) and a gear unit (also not shown in detail) are housed.

[0232] In addition, the stair climber module 132 includes two stair climber arms 136a, 136b arranged on opposite sides of the central section 134. The first arm ends of the stair climber arms 136a, 136b are each coupled to the electric drive unit via the gear unit. The free arm ends of the stair climber arms 136a, 136b are each provided with rollers 138a, 138b.

[0233] The stair climbing arms 136a, 136b can be moved in a manner known per se by means of the drive unit and the gear unit such that the device 10 can also overcome stairs when used as a handcart or sack barrow.

[0234] To supply the drive unit of the stair-climber module 134 with electrical energy, the stair-climber module 134 also has two energy interfaces 140a, 140b. In the illustrated embodiment, an electrical energy storage device 141a, 141b is mechanically and electrically coupled to each of the energy interfaces 140a, 140b. Each of the electrical energy storage devices 141a, 141b comprises a rechargeable battery unit.

[0235] The stair climber module 134 is designed as a self-contained unit that only needs to be mechanically attached to the frame 12 in order to perform its function.

[0236] However, the stair climber module 134 also includes an electrical output interface 142 (see Figure 1).

[0237] Via this electrical output interface 142, the drive units 30a, 30b and the lighting device 38 are electrically coupled to the energy interfaces 140a, 140b, so that the drive unit 30a, 30b and the lighting device 38 can also be supplied with energy from the electrical energy storage devices 141a, 141b.

[0238] Furthermore, an electrical interface 144 for connecting an electrical device is coupled to the electrical output interface 142. The electrical interface 144 is arranged in the region of the support wall 80. If the device 10 is used as a work table, a work table lighting can be operated, for example, via the electrical interface 144.

[0239] In addition, the electrical interface 78a, the electrical interface 78b and the electrical interface 78c are electrically coupled to the electrical energy storage devices 141a, 141b via the electrical output interface 142.

[0240] Since the energy interfaces 140a, 140b not only serve to supply the stair climber module 134 with electrical energy, but also supply other components of the device 10 with electrical energy via the energy interfaces 140a, 140b, the energy interfaces 140a, 140b can also be regarded as energy interfaces 140a, 140b of the device 10. For the sake of clarity, the figures do not depict electrical connecting lines between the electrical output interface 142, the lighting device 38, the drive units 30a, 30b, the electrical interface 144 for connecting an electrical device, the electrical interface 78a, the electrical interface 78b, and the electrical interface 78c.

[0241] In the illustrated embodiment, the energy interfaces 140a, 140b are also designed to be compatible with electrical energy storage devices 141a, 141b, which can also be used for electric hand-held power tools 48. Thus, the same electrical energy storage devices 141a, 141b that are also used to supply electrical energy to electric hand-held power tools 48 can be used to supply the device 10 with electrical energy.

[0242] In summary, the device 10 can thus be used as a handcart or sack barrow when the feet 86a, 86b, 86c are in the respective retracted positions and the storage platform 40 is in the transport configuration.

[0243] In this context, the drawbar 92 and thus the coupling device 90 are in a retracted position.

[0244] Alternatively, the device 10 can be used as a work table according to a first configuration when the storage platform 40 is in the working configuration and the feet 86a, 86b, 86c are each in their use position.

[0245] Furthermore, the device 10 can be used as a work table according to a second configuration when the storage platform 40 is in the working configuration and the feet 86a, 86b, 86c are each in the retracted position.

[0246] In this context, the drawbar 92 and thus the coupling device 90 are also in a retracted position. Furthermore, the device 10 can be used as a vehicle trailer. For this purpose, the drawbar 92 and thus the coupling device 90 must be in the use position. The support feet 86a, 86b, 86c must be in the retracted position. In the event that a cargo item 45 is to be transported when the device is used as a vehicle trailer, the storage platform 40 must be in the transport configuration.

[0247] In this context, the lighting device 38 is used as the rear light of the vehicle trailer.

[0248] Figures 22 to 27 show a further embodiment of the device 10.

[0249] In the following, only the differences compared to the embodiment of the device 10 explained with reference to Figures 1 to 21 will be discussed. Otherwise, the above explanations apply accordingly.

[0250] A first difference is that the storage platform 40 in the embodiment according to Figures 22 to 27 does not have an electrical interface.

[0251] Furthermore, the storage platform 40 of the device 10 in the embodiment according to Figures 22 to 27 comprises only a single mechanical interface 68. This is equipped with a securing element 76, which acts in the same way as the securing elements 76a, 76b, 76c.

[0252] Furthermore, the device according to Figures 22 to 27 does not have a stair climbing unit.

[0253] Likewise, the wheels 26a, 26b are not equipped with a drive unit.

[0254] The device 10 according to Figures 22 to 27 is thus a purely mechanical device 10 without electrical components.

[0255] A further difference is that in the embodiment according to Figures 22 to 27, a fourth support leg 86d is provided (see in particular Figure 22). The fourth support leg 86d is arranged in the region of the first upright 12a of the frame 12, ie, where the support leg 86c is also provided.

[0256] The fourth base 86d is rotatably mounted like the base 86c already explained with reference to the previous embodiment.

[0257] The base 86c and the base 86d can rotate about a common axis of rotation.

[0258] A further difference is that the base 86c, the base 86d and the drawbar 92 are not mounted on the handle unit 20, but are mounted on the frame 12 via a bearing element 146 designed as a sheet metal part.

[0259] The drawbar 92 can also be rotated about the same axis of rotation as the base 86c and the base 86d.

[0260] The common axis of rotation runs parallel to the common central axis 28 of the wheels 26a, 26b.

[0261] However, the base 86, the base 86d, and the drawbar 92 are arranged spaced apart from one another along the common axis of rotation. This means that, unlike the previously explained embodiment, no common joint unit is provided.

[0262] The support foot 86c is arranged adjacent to the longitudinal tube 14a, and the support foot 86d is arranged adjacent to the longitudinal tube 14b. The drawbar 92 is arranged between the support feet 86c, 86d along a direction parallel to the common center axis 28 of the wheels 26a, 26b.

[0263] To illustrate the presence of the two support feet 86c and 86d, the device 10 assumes a first configuration in Figure 22. In this configuration, the device 10 is shown in a position in which it can be used as a handcart or sack truck. Starting from this position, however, the support foot 86c is in the assigned use position. The support foot 86d is being transferred from the assigned retracted position to the assigned use position, which is indicated by an arrow.

[0264] The drawbar 92 and thus also the coupling device 90 as a whole are visible in the configuration shown in Figure 23. This configuration is referred to as the second configuration.

[0265] In this case, the coupling device 90 is transferred from the assigned use position, which is shown in dashed lines in Figure 23, to the assigned retraction position. Thus, in the illustration according to Figure 23, the coupling device 90 assumes an intermediate position between the use position and the retraction position.

[0266] Figures 24 and 25 show a third configuration and a fourth configuration of the device 10, wherein in the third configuration according to Figure 24, the feet 86c and 86d assume their respective assigned use positions, while the feet 86a, 86b are still in the retracted position. In other words, the third configuration relates to an intermediate state of the device when it is to be used as a work table.

[0267] In the fourth configuration according to Figure 25, all feet 86a, 86b, 86c, 86d are in their respective assigned usage positions. Furthermore, the storage platform 40 is in the working configuration. Consequently, in this configuration, the device can be used as a work table.

[0268] The device can also be used as a work table in the fifth configuration shown in Figure 26. However, analogous to the embodiment shown in Figure 14, all feet 86a, 86b, 86c, and 86d are now in their respective retracted positions. The work table in the fifth configuration is thus deeper than the work table in the fourth configuration.

[0269] In the fifth configuration, the device 10 is mounted on a base via the wheels 26a, 26b and leg stumps provided on the support element. As is clear from Figure 27, the device 10 according to the embodiment of Figures 22 to 27 can also be used as a vehicle trailer.

[0270] List of reference symbols

[0271] 10 Device

[0272] 12 frame

[0273] 12a first confession

[0274] 12b second confession

[0275] 14a first longitudinal tube

[0276] 14b second longitudinal tube

[0277] 16a first cross tube

[0278] 16b second cross tube

[0279] 16c third cross tube

[0280] 18 Confession level

[0281] 20 handle unit

[0282] 22a first connecting pipe

[0283] 22b second connecting pipe

[0284] 24a axle stub

[0285] 24b axle stub

[0286] 26a first wheel

[0287] 26b second wheel

[0288] 28 common central axis

[0289] 30a drive unit

[0290] 30b drive unit

[0291] 32a pneumatic tires

[0292] 32b pneumatic tires

[0293] 34a profile

[0294] 34b profile

[0295] 36a first splash guard

[0296] 36b second splash guard

[0297] 38 Lighting device

[0298] 38a first light unit 38b second light unit

[0299] 40 storage platform

[0300] 42 axis of rotation

[0301] 44a bolt

[0302] 44b bolt

[0303] 45 Transport goods

[0304] 46 Container, system box

[0305] 48 Hand-held machine tools

[0306] 50 lower mechanical interface

[0307] 52 upper mechanical interface

[0308] 54a Foot of the system box

[0309] 54b Foot of the system box

[0310] 54c Foot of the system box

[0311] 54d Foot of the system box

[0312] 56 protruding undercut element

[0313] 58a Deepening

[0314] 58b Deepening

[0315] 58c Deepening

[0316] 58d Deepening

[0317] 60 recess, opening

[0318] 62 undercut surface

[0319] 64 securing element

[0320] 65 leap forward

[0321] 66 Stacking direction

[0322] 68 mechanical interface of the storage platform

[0323] 68a mechanical interface of the storage platform

[0324] 68b mechanical interface of the storage platform

[0325] 68c mechanical interface of the storage platform

[0326] 70a Deepening

[0327] 70b Deepening 70c Deepening

[0328] 72a Deepening

[0329] 72b Deepening

[0330] 72c Deepening

[0331] 74a Undercut surface

[0332] 74b Undercut surface

[0333] 74c undercut surface

[0334] 76 securing element

[0335] 76a securing element

[0336] 76b securing element

[0337] 76c securing element

[0338] 78a electrical interface

[0339] 78b electrical interface

[0340] 78c electrical interface

[0341] 80 retaining wall

[0342] 82 support surface

[0343] 84 work edition

[0344] 86a Stand

[0345] 86b stand

[0346] 86c stand

[0347] 86d stand

[0348] 88a Bearing element

[0349] 88b Bearing element

[0350] 90 coupling unit

[0351] 91 vehicles

[0352] 92 drawbar

[0353] 94 coupling pieces

[0354] 96 counterpart

[0355] 98 Middle part of the handle unit

[0356] 100a Connecting part of the handle unit 100b Connecting part of the handle unit

[0357] 102a Handle part of the handle unit

[0358] 102b Handle part of the handle unit

[0359] 104 Joint unit

[0360] 106 common axis of rotation

[0361] 107 Control element

[0362] 108 recess

[0363] 110 first gel enkschal e

[0364] 112a Pivot pin

[0365] 112b Pivot pin

[0366] 114a Circumferential section with enlarged diameter

[0367] 114b Circumferential section with enlarged diameter

[0368] 116a radial pocket

[0369] 116b radial pocket

[0370] 118a Stop surface

[0371] 118b Stop surface

[0372] 120 second joint shell

[0373] 122a Pivot pin

[0374] 122b Pivot pin

[0375] 124a Circumferential section with reduced radius

[0376] 124b Circumferential section with reduced radius

[0377] 126a Radial projection

[0378] 126b Radial projection

[0379] 128a Stop surface

[0380] 128b stop surface

[0381] 130 stair climbing unit

[0382] 132 Stair climber module

[0383] 134 Middle section of the stair climber module

[0384] 136a Stair climbing arm

[0385] 136b Stair climbing arm 138a Roller

[0386] 138b role

[0387] 140a Energy interface

[0388] 140b Energy interface 141a Electrical energy storage

[0389] 141b electrical energy storage

[0390] 142 electrical output interface

[0391] 144 electrical interface for connecting an electrical device

[0392] 146 bearing element

[0393] B Width of a system box

[0394] BP Width of the storage platform

[0395] BR tire width

[0396] L Length of a system box TP Length of the storage platform

[0397] W obtuse angle

[0398] W 1 angular range

[0399] W2 angle range

Claims

Patent claims 1. A device (10) for transporting and / or using at least one electric hand-held power tool (48), comprising a frame (12) with a first support (12a) and a second support (12b), the second support (12b) being arranged opposite the first support (12a), a handle unit (20) provided on the frame (12) in the region of the first support (12a), at least two wheels (26a, 26b) rotatable about a common central axis (28), the at least two wheels (26a, 26b) being mounted on the frame (12) in the region of the second support (12b), a storage platform (40) for receiving a transport item (45), the storage platform (40) being coupled to the frame (12) in the region of the second support (12b) and projecting from the frame (12) at least in a transport configuration, and a coupling unit (90) for coupling to a vehicle (91),wherein the coupling unit (90) is provided in the region of the first stand (12a) on the stand (12)., 2. Device (10) according to claim 1, wherein the storage platform (40) is rotatably mounted on the frame (12) and can optionally assume the transport configuration or a working configuration by rotating relative to the frame (12), wherein the storage platform (40) in the working configuration substantially rests against the frame (12).

3. Device (10) according to claim 1 or 2, further comprising a support wall (80), wherein the support wall (80) is provided on the frame (12) and is located on the same side of the frame (12) on which the storage platform (40) projects from the frame (12) in the transport configuration.

4. Device (10) according to claim 2 and 3, wherein in the working configuration the storage platform (40) and the support wall (80) complement each other to form a flat working support (84).

5. Device (10) according to one of the preceding claims, wherein at least one stand (86a, 86b) is provided on the frame (12) in the region of the second frame end (12b).

6. Device (10) according to one of the preceding claims, wherein at least one support foot (86c, 86d) is provided on the frame (12) in the region of the first frame end (12a).

7. Device (10) according to claim 6, wherein, when viewed along the common central axis (28) of the wheels (26a, 26b), a frame-side stand end of the at least one stand (86c, 86d) arranged in the region of the first frame end (12a) is closer to the frame (12) than a section of the handle unit (20) which is at the maximum distance from the frame (12).

8. Device (10) according to one of the preceding claims, wherein the coupling unit (90) comprises a drawbar (92), wherein a coupling piece (94) for coupling to a counterpart (94) on the vehicle (91) is provided at a first drawbar end of the drawbar, and wherein a second drawbar end of the drawbar (92), which is opposite to the first drawbar end, is mounted on the frame (12) in the region of the first frame end (12a).

9. Device (10) according to claim 8, wherein the drawbar (92) is movably mounted on the frame (12) so that the drawbar (92) can optionally assume a use position or a retracted position.

10. Device (10) according to claim 9, comprising a stop (128a) against which the drawbar (92) rests in the use position, in particular wherein the drawbar can be locked in different angular positions relative to the frame (12).

11. Device (10) according to claim 9 or 10, wherein when viewed along the common central axis (28) of the wheels (26a, 26b), the use position of the drawbar (92) and the retracted position of the drawbar (92) enclose an obtuse angle (W).

12. Device (10) according to one of claims 8 to 11 and according to one of claims 6 and 7, wherein the drawbar (92) and the at least one support foot (86c, 86d), which is arranged in the region of the first support (12a), are mounted on the frame (12) so as to be rotatable about a common axis of rotation (106).

13. Device (10) according to claim 12, wherein the drawbar (92) and the at least one support foot (86c), which is arranged in the region of the first support (12a), are mounted on the support (12) by means of a common joint unit (104).

14. Device (10) according to one of claims 8 to 13 and according to one of claims 6 and 7, wherein in the region of the first upright (12a) two feet (86c, 86d) are provided on the frame (12) and wherein the drawbar (92) is arranged between the two feet (86c, 86d) along a direction parallel to the common central axis (28) of the wheels (26a, 26b).

15. Device (10) according to one of claims 8 to 14 and according to one of claims 6 and 7, wherein the at least one stand (86c) arranged in the region of the first stand (12a) has a recess (108) for receiving the drawbar (92) at least in the retracted position of the drawbar (92).

16. Device (10) according to claim 15, wherein the at least one base (86c) arranged in the region of the first upright (12a) is designed at least in sections as a profile that is open on one side and the profile that is open on one side forms the recess (108).

17. Device (10) according to one of claims 8 to 16, wherein, when viewed along the common central axis (28) of the wheels (26a, 26b), the second drawbar end of the drawbar (92) is closer to the frame (12) than a section of the handle unit (20) which is at the maximum distance from the frame (12).

18. Device (10) according to one of the preceding claims, wherein the storage platform (40) has at least one mechanical interface (68a, 68b, 68c) for mechanical Fastening of a container (46), in particular wherein the container (46) is designed to accommodate the hand-held power tool (48).

19. Device (10) according to claim 18, wherein the storage platform (40) has at least two mechanical interfaces (68b, 68c) for mechanically fastening a container (46) in each case, wherein the mechanical interfaces (68b, 68c) are arranged at a distance from one another, so that a container (46) can be fastened to the storage platform (40) simultaneously by means of each of the two mechanical interfaces (68b, 68c).

20. Device (10) according to one of claims 18 and 19, wherein the storage platform (40) has at least two mechanical interfaces (68a, 68b, 68c) for mechanically fastening a respective container (46), wherein the mechanical interfaces (68a, 68b, 68c) are alternatives.

21. Device (10) according to one of the preceding claims, wherein the storage platform (40) has at least one electrical interface (78a, 78b, 78c) for electrically coupling a container (46), in particular wherein the container (46) is designed to receive the hand-held power tool (48).

22. Device (10) according to one of claims 18 to 21, wherein a width (BP) of the storage platform (40), measured along a direction parallel to the common central axis (28) of the wheels (26a, 26b), corresponds substantially to twice a first outer dimension (B) of a standing surface of the container (46) and / or is 50 cm to 80 cm.

23. Device (10) according to one of claims 18 to 22, wherein a depth (TP) of the storage platform (40), which is measured in the transport configuration along a direction perpendicular to the common central axis (28) of the wheels (26a, 26b), substantially corresponds to a second outer dimension (L) of a standing surface of the container (46) and / or is 35 cm to 45 cm.

24. Device (10) according to one of claims 18 to 23, wherein the container (46) is a system box (46).

25. Device (10) according to one of the preceding claims, wherein at least one of the two wheels (26a, 26b) has a profile (34a, 34b) oriented along a running direction and / or bound to the running direction.

26. Device (10) according to one of the preceding claims, wherein at least one of the two wheels (26a, 26b) comprises a pneumatic tire (32a, 32b).

27. Device (10) according to claim 26, wherein the pneumatic tire (32a, 32b) has a tire width (BR) of 60 mm or less, preferably of 50 mm or less.

28. Device (10) according to one of the preceding claims, further comprising an energy interface (140a, 140b) for electrically and mechanically coupling an electrical energy storage device (141a, 141b).

29. Device (10) according to one of the preceding claims, further comprising an electrical interface (144) for connecting an electrical device.

30. Device (10) according to one of the preceding claims, further comprising at least one lighting device (38).

31. Device (10) according to one of the preceding claims, further comprising a splash guard device (36a, 36b) associated with at least one of the wheels (26a, 26b).

32. Device (10) according to claim 31, wherein the splash guard device (36a, 36b) surrounds the at least one associated wheel (26a, 26b) along a circumferential direction of the associated wheel (26a, 26b) by less than 180 degrees and / or the splash guard device (36a, 36b) has at least one section which has a changing radial distance from the at least one wheel (26a, 26b) along a circumferential direction of the at least one associated wheel (26a, 26b).

33. Device (10) according to one of the preceding claims, further comprising a stair climbing unit (130).

34. Device (10) according to claim 33, wherein the stair climbing unit (130) is designed as an optionally mountable stair climbing module (132).

35. Device (10) according to one of the preceding claims, further comprising a drive unit (30a, 30b) for driving the wheels (26a, 26b).

36. Use of a device (10) according to one of the preceding claims as a vehicle trailer, in particular as a two-wheel trailer or three-wheel trailer.

37. Use of a device (10) according to one of claims 1 to 35 as Handcart.

38. Use of a device (10) according to one of claims 1 to 35 as a work table.

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