Lighting assembly for a hand-held machine tool, machine tool assembly and kit

Abstract

A lighting assembly (22) for selectively fastening to a hand-held power tool (12), in particular to a hand-held grinding machine, is described. The lighting assembly (22) comprises a carrier unit (24) with a base section (26) and two legs (28, 30), wherein the legs (28, 30) extend from the base section (26) on opposite sides. The base section (26) and the two legs (28, 30) thus define a receiving space (32) for the non-positive and / or positive reception of a section of the hand-held power tool (10). The lighting assembly (22) further comprises a lighting unit (40) with at least one light source (44) which is fastened to the carrier unit (24). Furthermore, a machine tool assembly (10) with a hand-held machine tool (12), in particular a hand-held grinding machine, and with such a lighting assembly (22) is presented.In addition, a kit is presented which comprises a hand-held power tool (12), such a lighting assembly (22) and a spacer assembly.

Description

The invention relates to a lighting assembly for selective attachment to a hand-held power tool, in particular to a hand-held grinding machine.The invention is also directed to a machine tool assembly. The power tool assembly comprises a hand-held power tool, in particular a hand-held grinding machine, which comprises a machine housing, and a lighting assembly.The invention also relates to a modular construction comprising a hand-held power tool and a lighting assembly.When working with a hand-held power tool, in particular with a hand-guided grinding machine, a user of the hand-held power tool must always have a view of the workpiece to be machined, in particular in the vicinity of a machining zone. Only in this way can an accurate and high-quality working result be ensured. This also applies in particular when the hand-held power tool is used in an environment with poor lighting conditions. Against this background, hand-held power tools are known which have lighting devices integrated into an associated machine housing. However, this is not the case with all hand-held machine tools. Thus, in a case in which a user would expect to work under poor lighting conditions, attention must always be paid to having available the suitable hand-held power tool, i.e. a hand-held power tool with an integrated lighting device.Against this background, the object of the present invention is to specify a simple and flexible possibility for illuminating a machining zone and / or a surrounding area of a machining zone of a hand-held power tool. In particular, this illumination possibility is to be independent of a hand-held power tool used.The object is achieved by a lighting assembly for selective fastening to a hand-held power tool, in particular to a hand-held grinding machine. The lighting assembly comprises a carrier unit having a base portion and two legs. The legs extend from the base portion on opposite sides. Thus, the base section and the two legs define a receiving space for the force-fit and / or form-fit receiving of a section of the hand-held power tool. Furthermore, the lighting assembly comprises a lighting unit with at least one light source. The illumination unit is fastened to the carrier unit. In other words, the base section and the two legs of the carrier unit form a mechanical interface of the lighting assembly, via which interface the lighting assembly can be fastened to a hand-held machine tool, in particular to a hand-held grinding machine. After the two legs extend from the base portion on opposite sides, the legs may also be referred to as side legs. In a state in which the section of the hand-held power tool is accommodated in the accommodation space, the two legs abut on different sides of the hand-held power tool and, in particular, laterally on the section of the hand-held power tool with respect to a main working direction. Due to the fact that the base section and the two legs are designed to receive the section of the hand-held power tool in a force-fit and / or form-fit manner in the receiving space spanned by these elements, the carrier unit can also be referred to as a clamp or clip. In simplified terms, the construction of the carrier unit thus allows the lighting assembly according to the invention to be clamped or fixed to the section of the hand-held power tool. In other words, the section of the hand-held power tool can be clamped between the two legs.When viewed from purely geometric aspects, the carrier unit can also be referred to as a U-shaped or C-shaped. The base portion forms a base of the U-shape or an upstanding portion of the C-shape. The two legs accordingly form portions of the U-shape projecting upwards from the base of the U-shape or portions of the C-shape projecting to the right. The carrier unit is thus structurally comparatively simple. In addition, such a carrier unit can be implemented in a compatible manner with a plurality of different hand-held power tools, in particular with a plurality of different hand-held grinding machines. The illumination unit fastened to the carrier unit can thus be fastened to a hand-held machine tool in a simple and flexible manner. The light source serves for illuminating a processing zone and / or a surrounding area of a processing zone. In this case, the light source can be operated in order to generally increase the brightness. Alternatively or additionally, the light source can be designed to generate a highlight which falls at a comparatively flat angle onto a workpiece to be machined by means of the hand-held power tool, so that defects and / or deficiencies of a working result, e.g. unevennesses, scratches and / or flaws, can easily be recognized by a user using the light source.In the context of the present invention, the two legs may be of equal size or of different sizes. Preferably, however, the two legs are substantially the same size. Alternatively or additionally, the legs may extend in the same or different directions from the base portion. In this case, the limbs preferably extend in the same direction from the base section. Furthermore, alternatively or additionally, the legs can run substantially straight or substantially curved. Overall, a symmetrical arrangement and configuration of the legs is preferred, i.e. the legs are preferably of the same size and extend in the same direction from the base section. In this way, a symmetrical U-shape or C-shape is obtained. However, other variants, in particular those which lead to an asymmetric and / or distorted U-shape or C-shape, are likewise conceivable.In the context of the present invention, a workpiece is to be understood as an object which is machined or is to be machined by means of the hand-held machine tool. For example, the workpiece is a furniture element. The workpiece can also be a building element, e.g. a wall, a ceiling or a supporting structure.According to a preferred embodiment, the light source is designed as a light-emitting diode (LED). Such a light source is of compact construction and can moreover be operated in an energy-efficient manner. The LED can be designed as a so-called chip-on-board (COB) LED. Alternatively or additionally, the LED can be embodied as a so-called surface-mounted device. Such a light source is particularly compact in construction.In one embodiment, at least one of the legs is elastically deformable at least in sections and at least along a direction toward the respective other leg and / or away from the respective other leg. Thus, the carrier unit can be fastened to the hand-held power tool and / or can be removed from the hand-held power tool with elastic deformation of the at least one of the legs. In a preferred embodiment, both legs are elastically deformable. In other words, in such a configuration, a distance between the two legs can be temporarily increased by elastic deformation compared to a relaxed, i.e. non-deformed state. Due to the elasticity of the deformation, the legs re-shape into the non-deformed state, provided such a deformation is released. This simplifies fastening of the lighting assembly to a hand-held machine tool. In this case, for example, in a state in which it has not yet been fastened, the distance between the limbs can be increased by elastic deformation. In this state, a section of the hand-held power tool can be positioned particularly easily in the receiving space. As soon as this is the case, elastic return deformation of the legs can be released. A particularly reliable, force-fit and / or form-fit fastening of the lighting assembly to the hand-held power tool is thus achieved.The base portion and the two legs may surround a circumference of the receiving space by more than 270°. The wrap angle or enclosure angle of the receiving space is determined in particular in a perspective which corresponds to a plan view of the lighting assembly. In this case, a viewing direction runs perpendicular to those directions along which the limbs emerge from the base section. In other words, the lighting assembly is viewed such that its U-shape or C-shape is visible. The wrap angle or wrap angle is then formed, for example, around a centroid or geometric centroid of the receiving space, i.e. an interface of the receiving space which is visible in the plan view. Alternatively, the wrap angle or enclosure angle can be determined around a volume center of gravity of the receiving space. In a state in which the illumination assembly is fastened to a hand-held power tool, the centroid or the centroid can lie on a motor axis, a gear mechanism axis, e.g. of an eccentric gear mechanism, and / or a central axis of the tool interface of the hand-held power tool. It is also possible that, in a state in which the illumination assembly is fastened to a hand-held power tool, the centroid or the centroid lies on a central axis of that housing section of the hand-held power tool to which the illumination assembly is fastened. An imaginary line can be drawn between the centroid or the centroid of the volume of the receiving space and one end of each of the two limbs. Based on this, the angle between these two imaginary lines is measured, which coincides with a region of the receiving space surrounded by the base section and the legs. The angle that complements this angle by 360°, i.e. the other angle that can be measured between these two imaginary lines, is assigned to a gap between the legs. This gap allows the section of the hand-held workpiece machine to be moved into the receiving space. Preferably, this gap is opposite the base portion. Overall, the lighting assembly can be fastened to the hand-held power tool in a simple and reliable manner by means of a carrier unit configured in this way.The fact that the base section and the two legs surround a circumference of the receiving space by more than 270° enables in particular a reliable, form-fitting fastening.It is understood that the example in which the base section and two legs enclose a circumference of the receiving space by more than 270° can be combined in particular with the example according to which at least one of the legs is elastically deformable at least in sections and at least along a direction toward the respective other leg and / or away from the respective other leg. In such a configuration, the illumination assembly can be fastened particularly easily and reliably in a form-fitting manner to the section of the hand-held power tool.In a variant, at least one of the legs has a side surface which faces the respective other leg and which is curved at least in sections. When viewed from the receiving space, the side surface is concave. In particular, the curvature of the side surface can be adapted to a curvature of that section of the hand-held power tool to which the illumination assembly is to be fastened. This results in a reliable fastening to the hand-held power tool. In particular, undesired relative movements between the lighting assembly and the hand-held power tool, for example shaking or rattling, can be avoided in this way. Furthermore, by using the side surface which is curved at least in sections, a form-fit and thus reliable connection can be realized between the lighting assembly and the hand-held power tool. In a preferred embodiment, both legs have a side surface which faces the respective other leg and which are curved at least in sections. In particular, the side surfaces are mirror-symmetrical with respect to a central plane running through the receiving space.In one example, a periphery of the receiving space is curved at a transition from at least one of the legs to the base portion. This serves, on the one hand, for a mechanically stable connection between the base section and the at least one leg. In other words, the base portion and the at least one leg merge into one another over a radius. This preferably applies to both legs, i.e. the circumference of the receiving space is curved at each transition from one leg to the base portion. In addition, this curvature can also be matched to an outer contour of that section of the hand-held power tool to which the lighting assembly is to be fastened. This results in a reliable fastening to the hand-held power tool. In particular, undesired relative movements between the lighting assembly and the hand-held power tool, for example shaking or rattling, can be avoided in this way.In one embodiment, at least one of the legs comprises a latching device for latching the lighting assembly on the hand-held power tool. The latching of the lighting assembly on the hand-held power tool takes place in particular in a form-fitting manner. By means of the latching device, the illumination assembly can be held on the hand-held power tool in a particularly reliable manner. This means that an undesired detachment of the lighting assembly from the hand-held power tool is avoided.In one example, the latching device has at least one insertion bevel. Such an insertion slope can also be referred to as a run-on ramp or mounting slope. The insertion bevel is preferably oriented with respect to a fastening direction in such a way that a section of the hand-held power tool contacts the insertion bevel and / or runs over the insertion bevel when the lighting assembly is fastened to the hand-held power tool. In this way, a simple fastening of the lighting assembly to the hand-held power tool can be combined with a reliable holding of the lighting assembly to the hand-held power tool.According to one embodiment, a securing projection is provided on at least one free end of one of the two legs, which projects in the direction of the respective other leg opposite the remaining portions of the leg. Preferably, a securing projection is provided on each of the two legs, which projects in the direction of the respective other leg relative to the remaining sections of the leg. Such a securing projection can be designed to engage in a depression or in an opening on the hand-held power tool. In one example, the securing projection is positioned and dimensioned in such a way that it can engage in a fastening opening on the machine housing of the hand-held machine tool, wherein the fastening opening is also designed to mount a lateral handle on the hand-held machine tool. In this context, use can be made of the fact that hand-held power tools frequently have such a fastening opening. It is also possible for the hand-held power tool to have two such fastening openings which are arranged on opposite sides of the hand-held power tool. Such fastening openings can be provided for the purpose that both users who are right-handed and users who are left-handed can fasten a lateral handle to the hand-held power tool, which can be reached in an ergonomic manner. In this case, each of the two legs can have a securing projection, wherein a securing projection is configured in each case to engage in one of the fastening openings.The base portion may include a positioning member for positioning the lighting assembly on the hand-held machine tool. In particular, the positioning element of the illumination assembly interacts with a positioning element of the hand-held power tool. This has the effect that the lighting assembly can be fastened to the hand-held machine tool with high precision in a predefined relative position with respect to the hand-held machine tool. In this way, it is also achieved that the illumination unit is fastened to the hand-held power tool in a predefined relative position, such that a predefined region can be illuminated relative to the hand-held power tool. In a case in which the positioning element serves for centering the lighting assembly, the positioning element can also be referred to as a centering element. The positioning element of the hand-held power tool can accordingly also be referred to as a centering element. For example, the positioning element is formed as a depression on the carrier unit, in particular on the base section, and the positioning element of the hand-held power tool is formed as a projection on the hand-held power tool which is formed to be received in the depression. The reverse case is naturally also conceivable, i.e. a projection can also be provided on the carrier unit and a depression on the hand-held machine tool.In one variant, at least one of the legs comprises an elongate projection which extends at least in sections along a circumference of the receiving space and is designed to engage in an associated groove for fastening the lighting assembly to the hand-held power tool. Preferably, both legs are equipped with such a projection. In particular, the protrusion protrudes in the direction of an interior of the receiving space from the remaining sections of the leg. After the groove on the hand-held power tool is configured to receive a respectively associated protrusion, the groove preferably runs along a circumference of a machine housing of the hand-held power tool to which the lighting assembly is to be fastened. This results in a particularly reliable fastening of the lighting assembly to the hand-held power tool.The illumination unit can comprise at least one elongate light guide element and / or a plurality of light sources. In this context, the plurality of light sources can be arranged along a line and / or in the form of a luminous band. In this way, a luminous power of the lighting unit can be increased. Moreover, different portions of the elongate light guide element and / or individual ones of the plurality of light sources can be arranged at different positions of the carrier element and / or oriented in different directions. This results in a multidimensional, in particular planar, illumination of a processing zone and / or of a surrounding area of the processing zone.In a case where the lighting unit includes a plurality of light sources, each of the light sources may be configured as a light emitting diode (LED). All LEDs can be identical. In this way, a particularly simple construction of the illumination unit is achieved. In addition, illumination that is uniform at least in sections can be realized comparatively easily. However, it is also conceivable that LEDs with different properties are used. In particular, LEDs can be used which have different main radiation angles for the emitted light. Using such different LEDs, different lighting characteristics can be realized at different sections of the lighting unit. For example, a luminous characteristic of those LEDs or LEDs which point in the main working direction can be chosen differently from a luminous characteristic of those LEDs or LEDs which are oriented laterally with respect to the main working direction. Furthermore, LEDs with different main radiation angles can be used to realize uniform illumination, although the LEDs by means of which the illumination is ensured are offset or displaced relative to one another with respect to their positions on the carrier unit. For example, uniform illumination can result if one or more LEDs which are positioned comparatively deeply have a substantially perpendicular main radiation angle and LEDs which, in contrast, are positioned at a somewhat higher level have a downwardly inclined main radiation angle. In other words, variations in the positioning of the LEDs in the sense of uniform illumination can be compensated for by the selection of LEDs with different main radiation angles. This circumstance also opens up great degrees of freedom in the positioning of the LEDs without having to undergo negative effects in the illumination. It is thus possible to position LEDs in a targeted manner outside rooms which are intended to be used elsewhere, for example for positioning a hand of a user. Nevertheless, good, in particular uniform, illumination can be ensured.According to one development, the illumination unit comprises a vibration sensor which is coupled to the light source by signal technology, such that the light source can be operated as a function of a detection result of the vibration sensor. In this context, in particular, the light source can be activated when the vibration sensor detects a vibration. In a case where the vibration sensor does not detect vibration, the light source may be deactivated. In this connection, the vibration results in particular from an operation of the hand-held power tool. Consequently, the light source can be activated when the hand-held power tool is operated and deactivated when the hand-held power tool is not operated. In this context, after detecting that the hand-held power tool is not being operated, the light source can still remain activated during a predefined follow-up time. A communication or information interface between the lighting assembly and the hand-held machine tool is not necessary for this purpose. The lighting assembly can therefore also be operated depending on an operating state of the hand-held power tool if the lighting assembly is retrofitted to the hand-held power tool. In other words, the flexibility in the retrofittability of the lighting assembly is increased by means of the vibration sensor.The vibration sensor is designed, in particular, to distinguish vibrations resulting from operation of the hand-held power tool from other vibrations. This distinction can be made on the basis of a frequency, a frequency spectrum and / or an amplitude of the vibrations. Consequently, the light source can be reliably activated and deactivated based on a detection result of the vibration sensor when the hand-held machine tool is operated or when an operation of the hand-held machine tool is ended. Vibrations which result, for example, from a transport of the hand-held power tool do not lead to the activation or deactivation of the light source.In one example, the lighting unit comprises an electrical energy storage unit that is electrically couplable to the light source. A switching unit can be provided for the selective electrical connection of the energy storage unit and the light source. Consequently, the light source can be operated by means of electrical energy from the energy storage unit. The light source can thus be operated independently of the hand-held power tool, in particular independently of an energy storage unit of the hand-held power tool, and independently of an energy supply infrastructure. The lighting unit can therefore be used or retrofitted on a hand-held power tool without having to couple the lighting unit and the hand-held power tool with regard to an energy supply. In this way, the usability and retrofittability of the lighting assembly becomes particularly simple and flexible.The electrical energy storage unit preferably comprises at least one lithium-ion cell. Such cells have a particularly favorable ratio between electrical storage capacity and weight and volume. Moreover, lithium ion cells have advantageous properties with regard to electrical charging.In another example, the lighting unit includes an electrical power conversion unit electrically couplable to the light source. In this case, the electrical energy conversion unit is designed to provide electrical energy for the light source. In this case, the energy converted by means of the electrical energy conversion unit can originate from an environment of the energy conversion unit. In this connection, the power conversion unit converts kinetic energy resulting from vibration or movement of the lighting assembly, and in particular of a hand-held power tool to which the lighting assembly is installed, into electrical energy, for example. Alternatively or additionally, the energy conversion unit can have an electrical generator, for example in the manner of a dynamo. The electrical energy conversion unit can also be referred to as an energy harvesting unit.The carrier unit can have at least one passage channel for air. Consequently, in a state where the lighting assembly is mounted on the hand-held machine tool, a fluidic connection between an air duct of the hand-held machine tool and an environment can be kept free. In other words, blocking of such an air duct by the carrier unit is avoided. Negative effects of the lighting assembly on an operation and / or a performance of the hand-held power tool are thus avoided. In particular, in this context, a position and orientation of the passage channel on the carrier unit is matched to a position and orientation of an air channel on the hand-held power tool, to which the lighting assembly is to be fastened.In one variant, the carrier unit comprises at least one grip recess for a human finger. In this way, actuation of the lighting assembly by a user is facilitated. In this connection, the grip recess is arranged in particular on an end section of one of the two legs. Preferably, such a recessed grip is provided on each of the two legs in a respective end section.It is understood that the example in which the carrier unit comprises at least one recessed grip for a human finger can be combined in particular with the example according to which at least one of the legs is elastically deformable at least in sections and at least along a direction toward the respective other leg and / or away from the respective other leg. In such a configuration, the elastically deformable leg or the elastically deformable legs can be elastically deformed particularly easily by a user using his finger the grip recess.According to one embodiment, the carrier unit comprises at least one guide surface for guiding workpiece particles and / or for protection against workpiece particles. Such a guide surface thus serves to hold workpiece particles in a region which is bounded at least in sections by the guide surface. Alternatively or additionally, workpiece particles can be guided in a specific direction by means of the guide surface. In this way, workpiece particles can be held separately from the light source and / or kept away from the light source. The light source can thus be operated without being adversely affected by workpiece particles in an undesired manner. Alternatively or additionally, workpiece particles can be kept away from a user of the lighting assembly in this way, so that a user of the lighting assembly is not adversely affected by the workpiece particles in an undesired manner.In one example, the carrier unit comprises at least one contact surface for placing the illumination assembly against an obstacle or a workpiece section. The illumination assembly can thus be arranged in a simple manner in a predefined position relative to an obstacle or a workpiece section. If the illumination assembly is fastened to a hand-held power tool, this also applies to the hand-held power tool. Consequently, a workpiece can be machined by means of the hand-held power tool, wherein a predefined position relative to the obstacle or to a workpiece section is maintained. In this way, on the one hand, an undesired interaction, in particular machining, between the hand-held power tool and the obstacle or the workpiece section can be avoided. On the other hand, the precision in machining those workpiece sections which are to interact with the hand-held machine tool is thus increased. In this context, the illumination assembly and the hand-held power tool equipped therewith can also be moved relative to the workpiece portion and / or to the obstacle while the contact surface is in contact with the obstacle or on the workpiece portion. In this case, the contact surface slides off the obstacle or workpiece section. The contact surface can thus also be referred to as a sliding surface.In the field of hand-guided grinding machines, a component or an assembly which has such a contact surface is frequently also referred to as a protector or spacer. Consequently, the lighting assembly according to the invention can also provide the function of such a spacer or protector.The at least one light source can be offset relative to the at least one contact surface in the direction of the receiving space. In other words, the at least one light source is set back with respect to the at least one contact surface. In this way, it is ensured that the contact surface always contacts the obstacle or the workpiece section and not the light source. Rather, contact between the light source and the obstacle or workpiece section is avoided. In this way, the light source is protected from undesired mechanical influences. On the other hand, the precision of a working result is promoted in that a contact always takes place using the contact surface provided for this purpose.The lighting assembly may include an antiglare member. In this case, an antiglare element is understood to mean a component or component portion which is opaque or at least less transparent than an environment of the lighting assembly, i.e. in particular as ambient air. In particular, a light path between the light source and a user of the lighting assembly is blocked or provided with an optical resistor by means of an antiglare element. Consequently, unpleasant effects of the light source to the user are mitigated or avoided. In particular, a glare of the user by the light source is prevented.According to a development, in a plan view along a viewing direction which is perpendicular to the directions along which the limbs emerge from the base section, a width of each of the two limbs is smaller than a width of the base section. In other words, the top view corresponds to a view of the lighting assembly in which the U-shape or C-shape of the lighting assembly is visible. Such a configuration of the two legs thus has the effect that the lighting assembly protrudes only comparatively little with respect to the hand-held machine tool in the width direction of the two legs in a state in which it is fastened to the hand-held machine tool. In other words, the lighting assembly is particularly compact in the width direction of the legs. In this way, a clearance for a user of the hand-held power tool is only restricted comparatively little or not at all compared to a state in which no lighting assembly is fastened to the hand-held power tool. More generally, an ergonomy of the hand-held power tool remains substantially unaffected.In addition, the object is achieved by a machine tool assembly. The power tool assembly comprises a hand-held power tool, in particular a hand-guided grinding machine, which comprises a machine housing, and a lighting assembly according to the invention, which is fastened to the hand-held power tool. In this case, the base section of the lighting assembly bears, at least in sections, against a front surface of the machine housing which points in a main working direction of the hand-held power tool. The two legs each abut at least in sections on oppositely arranged side surfaces of the machine housing which are oriented laterally with respect to the main working direction. As already mentioned, the base section and the two legs of the carrier unit thus form a mechanical interface of the lighting assembly, via which the lighting assembly is fastened to the hand-held power tool, in particular to the hand-held grinding machine. A mechanical interface on the power tool side is formed on the machine housing of the hand-held power tool, which interface interacts with the mechanical interface formed by the lighting assembly. The two legs of the illumination assembly are in this case laterally adjacent to the machine housing of the hand-held machine tool with respect to the main working direction. In this case, the lighting assembly and the hand-held power tool are coupled in a force-fitting and / or form-fitting manner. The lighting assembly is thus reliably fastened to the hand-held power tool in a simple manner. The illumination assembly can be fastened quickly and easily to the hand-held power tool by sliding it onto the machine housing counter to the main working direction. Furthermore, the lighting assembly can be quickly and easily removed from the hand-held power tool by pulling it from the machine housing along the main working direction. The light source serves as a source for illuminating a processing zone and / or a surrounding area of a processing zone. In this case, the light source can be operated in order to generally increase the brightness. Alternatively or additionally, the light source can be designed to generate a highlight that falls at a comparatively shallow angle onto a workpiece to be machined by means of the hand-held power tool, so that defects and / or deficiencies of a working result, e.g. unevennesses, scratches and / or flaws, can easily be recognized by a user using the light source.The illumination assembly can preferably be fastened to the hand-held power tool without disassembly and can be separated from the hand-held power tool without disassembly. This means that the hand-held power tool does not have to be disassembled in order to fasten the lighting assembly to the hand-held power tool. The fastening of the illumination assembly can therefore be effected without an element of the hand-held power tool, in particular a tool or a tool interface, having to be disassembled. The same applies to the disconnection of the lighting assembly from the hand-held machine tool. The illumination assembly can thus be separated from the hand-held power tool without an element of the hand-held power tool, in particular a tool or a tool interface, having to be disassembled. Accessory and add-on parts are not considered elements of the hand-held machine tool. In this way, the mounting and dismantling of the lighting assembly is particularly simple.The hand-held machine tool may be wider than the lighting assembly in a direction transverse to the main working direction. In other words, the lighting assembly does not project with respect to the hand-held machine tool in a direction transverse to the main working direction. In this context, a maximum width of the hand-held power tool is compared with a maximum width of the lighting assembly. The maximum width of the hand-held power tool can be determined by a tool or a tool holder fastened thereto. As a result, handling of the hand-held machine tool for machining a workpiece is not impaired, or is only slightly impaired, by the presence of the lighting assembly. In addition, a clearance for a user of the hand-held power tool is only restricted comparatively little or not at all compared with a state in which no lighting assembly is fastened to the hand-held power tool. More generally, an ergonomy of the hand-held power tool remains substantially unaffected.Preferably, a machine housing of the hand-held machine tool is wider than the lighting assembly in a direction transverse to the main working direction. In other words, the lighting assembly does not project in a direction transverse to the main working direction with respect to the machine housing of the hand-held machine tool. This relates in particular to a motor section or drive section of the machine housing. In this context, a maximum width of the machine housing of the hand-held machine tool is compared with a maximum width of the lighting assembly. By virtue of such a configuration, handling of the hand-held power tool for machining a workpiece is not impaired, or is only slightly impaired, by the presence of the lighting assembly. In addition, a clearance for a user of the hand-held power tool is only restricted comparatively little or not at all compared with a state in which no lighting assembly is fastened to the hand-held power tool. More generally, an ergonomy of the hand-held power tool remains substantially unaffected.Alternatively, the illumination assembly can be wider than the hand-held power tool by at most 15%, preferably by at most 10% or at most 5%, in a direction transverse to the main working direction. In this alternative, the lighting assembly is thus wider than the hand-held power tool in a direction transverse to the main working direction. However, the lighting assembly is only slightly wider than the hand-held power tool. In this case, a maximum width of the hand-held power tool is compared with a maximum width of the lighting assembly. The maximum width of the hand-held power tool can be determined by a tool or a tool holder fastened thereto. As a result, handling of the hand-held machine tool for machining a workpiece is not impaired, or is only slightly impaired, by the presence of the lighting assembly. In addition, a clearance for a user of the hand-held power tool is only restricted comparatively little or not at all compared with a state in which no lighting assembly is fastened to the hand-held power tool. More generally, an ergonomy of the hand-held power tool remains substantially unaffected.The alternative in which the lighting assembly is wider than the hand-held power tool by at most 15%, preferably by at most 10% or at most 5%, in a direction transverse to the main working direction is advantageous in particular if the carrier unit comprises at least one contact surface for placing the lighting assembly against an obstacle or a workpiece section. As already explained, in such a configuration, the hand-held power tool can be easily arranged in a predetermined position relative to an obstacle or a workpiece section. Consequently, a workpiece can be machined by means of the hand-held power tool, wherein a predefined position relative to the obstacle or to a workpiece section is maintained. In this way, on the one hand, an undesired interaction, in particular machining, between the hand-held power tool and the obstacle or the workpiece section can be avoided. On the other hand, the precision in machining those workpiece sections which are to interact with the hand-held machine tool is thus increased.According to one embodiment, the hand-held power tool comprises a depression or an opening on the machine housing, which is designed to mount a lateral handle on the hand-held power tool. It is also possible for the hand-held power tool to have two such fastening openings which are arranged on opposite sides of the hand-held power tool. Such fastening openings can be provided for the purpose that both users who are right-handed and users who are left-handed can fasten a lateral handle to the hand-held power tool, which can be reached in an ergonomic manner. In this case, a securing projection is provided on at least one free end of one of the two limbs of the lighting assembly, which securing projection projects in the direction of the respective other limb with respect to the remaining portions of the limb. Preferably, a securing projection is provided on each of the two legs of the lighting assembly, which projects in the direction of the respective other leg opposite the remaining sections of the leg. The safety projections can engage in a respectively assigned depression or fastening opening of the hand-held power tool. Thus, the lighting assembly is reliably held on the hand-held machine tool.In addition, the object is achieved by a modular construction kit. The modular unit comprises a hand-held power tool, a lighting assembly according to the invention and a spacer assembly which comprises at least one contact surface for placing the spacer assembly against an obstacle or a workpiece section. Optionally, the lighting assembly or the spacer assembly may be fixed to a fixing portion of the hand-held machine tool. In this context, the spacer assembly does not have a light source. As already mentioned, such a spacer assembly in the area of the hand-guided grinding machines can also be referred to as a protector. Depending on the application or the machining task, the illumination assembly or the spacer assembly can thus be fastened to the fastening section of the hand-held power tool. In other words, the hand-held power tool has a single mechanical interface to which the spacer assembly and the lighting assembly can be selectively fastened. A hand-held machine tool belonging to this modular unit can therefore be adapted to a machining task comparatively quickly and easily by either fastening the spacer assembly or the lighting assembly to the fastening section.In one embodiment, the modular unit further comprises a guide assembly which comprises at least one guide surface for guiding the hand-held power tool relative to a workpiece. Optionally, the lighting assembly or the spacer assembly or the guide assembly may be fixed to the fixing portion of the hand-held machine tool. Depending on the application or the machining task, the illumination assembly or the spacer assembly or the guide assembly can thus be fastened to the fastening section of the hand-held power tool. In other words, the hand-held power tool has a single mechanical interface to which the spacer assembly, the lighting assembly or the guide assembly can be selectively fastened. A hand-held machine tool belonging to this modular unit can therefore be adapted to a machining task comparatively quickly and easily.It is understood that effects, advantages and features which were mentioned above merely in connection with one of the lighting assembly according to the invention, the power tool assembly according to the invention, and the modular construction unit according to the invention also apply in the same way to all other of the lighting assembly according to the invention, the power tool assembly according to the invention and the modular construction unit according to the invention.The invention will be explained below with reference to various exemplary embodiments which are shown in the attached drawings. The following are shown: FIG. 1 shows a power tool assembly according to the invention according to a first embodiment with a lighting assembly according to the invention according to a first embodiment in a perspective view, wherein a hand-held power tool of the power tool assembly is a hand-guided grinding machine, FIG. 2 shows the power tool assembly from FIG. 1 in a side view along a direction II in FIG. 1, FIG. 3 shows the lighting assembly from FIGS. 1 and 2 in a separate, perspective illustration, FIG. 4 shows the power tool assembly from FIGS. 1 and 2 in a view corresponding to FIG. 2, wherein the lighting assembly is only schematically illustrated and a human hand is additionally illustrated, FIG. 5 shows a power tool assembly according to the invention according to a second embodiment with a lighting assembly according to the invention according to a second embodiment in a perspective view, wherein a hand-held power tool of the power tool assembly is a hand-guided grinding machine, FIG. 6 shows the power tool assembly from FIG. 5 in a plan view along a direction VI in FIG. 5, FIG. 7 shows the power tool assembly from FIGS. 5 and 6 in a state in which the lighting assembly is removed from the hand-held power tool, FIG. 8 shows the lighting assembly from FIGS. 5 to 7 in a separate, perspective view, FIG. 9 shows a power tool assembly according to the invention according to a third embodiment with a lighting assembly according to the invention according to a third embodiment in a perspective view, wherein a hand-held power tool of the power tool assembly is a hand-guided grinding machine, FIG. 10 shows the power tool assembly from FIG. 9 in a plan view along a direction X in FIG. 9, FIG. 11 shows a power tool assembly according to the invention according to a fourth embodiment with a lighting assembly according to the invention according to a fourth embodiment in a perspective view, wherein a hand-held power tool of the power tool assembly is a hand-guided grinding machine, FIG. 12 shows a power tool assembly according to the invention according to a fifth embodiment with a lighting assembly according to a fifth embodiment, in a perspective view, wherein a hand-held power tool of the power tool assembly is a hand-guided grinding machine, FIG. 13 shows the power tool assembly from FIG. 12 in a plan view along a direction XIII in FIG. 12, FIG. 14 shows the power tool assembly from FIGS. 12 and 13 in a state in which the lighting assembly is removed from the hand-held power tool, FIG. 15 shows a power tool assembly according to the invention according to a sixth embodiment with a lighting assembly according to a sixth embodiment in a perspective view, wherein a hand-held power tool of the power tool assembly is a hand-guided grinding machine, FIG. 16 shows the power tool assembly from FIG. 15 in a plan view along a direction XVI in FIG. 15 , FIG. 17 shows a power tool assembly according to the invention according to a seventh embodiment with a lighting assembly according to the invention according to a seventh embodiment in a perspective view, wherein a hand-held power tool of the power tool assembly is a hand-guided grinding machine, FIG. 18 shows the power tool assembly from FIG. 17 in a plan view along a direction XVIII in FIG. 17, FIG. 19 shows the power tool assembly from FIGS. 17 and 18 in a perspective view in a state in which the lighting assembly is removed from the hand-held power tool, FIG. 20 shows a power tool assembly according to the invention according to an eighth embodiment with a lighting assembly according to the invention according to an eighth embodiment in a perspective view, wherein a hand-held power tool of the power tool assembly is a hand-guided grinding machine, FIG. 21 shows the power tool assembly from FIG. 20 in a plan view along a direction XXI in FIG. 20, FIG. 22 shows a lighting assembly according to a ninth embodiment, FIG. 23 shows a power tool assembly according to the invention according to a tenth embodiment in schematic illustration, wherein a hand-held power tool of the power tool assembly is a hand-guided saber saw, FIG. 24 shows a power tool assembly according to the invention according to an eleventh embodiment in schematic representation, wherein a hand-held power tool of the power tool assembly is a hand-guided oscillator, and FIG. 25 shows a modular construction kit according to the invention.FIG. 1 shows a machine tool assembly 10.The power tool assembly 10 comprises a hand-held power tool 12, which in the embodiment shown is designed as a hand-guided grinding machine.The hand-held power tool 12 comprises a machine housing 14 which substantially comprises a grip section 16 which is designed to be gripped by a user of the hand-held power tool 12 and a motor section 18, wherein a drive unit, not shown in detail, is accommodated in the motor section 18 of the machine housing 14. This means that components of a transmission and / or of another drive component can also be arranged within the motor section 18.The grip portion 16 and the motor portion 18 are oriented at an angle, more precisely substantially at right angles, with respect to one another, such that the machine housing 14 is substantially L-shaped in a side view (see FIG. 2 ).At an end of the motor section 18 facing away from the grip section 16, a tool holder is provided, to which a grinding tool 19, in the present case a grinding wheel, is fastened. The tool holder and thus the grinding tool 19 are coupled in terms of drive to the drive unit, so that these can be driven by means of the drive unit.In the field of hand-guided grinding machines, tool holders are frequently also referred to as grinding plates. The actual grinding tool 19, i.e. the grinding wheel, can thus be fastened to the grinding plate in the present case.In the embodiment shown, the hand-held power tool 12 further comprises a collection container 20 for workpiece particles. This is mounted laterally on the tool holder-side end of the motor section 18. The collecting container 20 is coupled to the tool holder and thus to the grinding tool 19 fastened thereto via channels running in the interior of the motor section 18 in such a way that workpiece particles can be transferred from a machining zone into the collecting container 20.Furthermore, the power tool assembly 10 comprises a lighting assembly 22, which is fastened to the hand-held power tool 12, more precisely to the motor section 18 of the machine housing 14 (see in particular FIG. 3 ).For this purpose, the lighting assembly 22 comprises a carrier unit 24.The carrier unit 24 is substantially composed of a base section 26 and two legs 28, 30.The legs 28, 30 extend from the base portion 26 at opposite ends thereof. The legs 28, 30 extend in the same direction.The carrier unit 24 thus has a substantially U-shape, wherein the base section 26 represents a base of the U-shape and the two legs 28, 30 each represent a leg of the U-shape.Here, in a plan view along a viewing direction that is perpendicular to those directions along which the legs 28, 30 extend from the base portion 26, a width B 1, B 2 of each of the two legs 28, 30 is smaller than a width BB of the base portion 26.In the embodiment shown, the widths B 1, B 2 of the legs 28, 30 are also selected such that the hand-held power tool 12 is wider than the lighting assembly 22 in a state in which the lighting assembly 22 is mounted on the hand-held power tool 12. In the embodiment shown, this edge is formed by the tool holder and the grinding tool 19 fastened thereto.The support unit 24 can be made of a plastic material.Furthermore, each of the legs 28, 30 can be elastically deformed along a direction toward the respective other leg 28, 30 and away from the respective other leg 28, 30. This is illustrated in FIG. 3 by means of two arrows.By means of the elastic deformation of the legs 28, 30, a distance A between the legs 28, 30 can therefore be increased starting from a relaxed, i.e. non-deformed, state of the legs 28, 30, in that the legs 28, 30 are elastically deformed. Due to their elasticity, the legs 28, 30 automatically resume their relaxed, i.e. undeformed, state as soon as the cause of the elastic deformation no longer exists.Furthermore, the legs 28, 30 and the base section 26 define a receiving space 32 for a section of the hand-held power tool. In the embodiment shown, this section is formed by the motor section 18 of the machine housing 14.The leg 28 has a side surface 34 which faces the leg 30.Similarly, leg 30 has a side surface 36 facing leg 28.Also, the base portion 26 has a side surface 38 facing in the same direction as the legs 28, 30.In the illustrated embodiment, the side surface 34 includes a first portion 34 athat is concavely curved. This first section 34 ais arranged at an end of the leg 28 facing the base section 26.At the free end of the leg 28, i.e. at its end facing away from the base section 26, the side surface 34 has a second section 34 bwhich is convexly curved. This convex curvature serves as an insertion radius or mounting radius, as will be explained in more detail below.In this case, the first section 34 aand the second section 34 bcross tangentially, i.e. without edges, into one another.The side surface 36 of the leg 30 is formed in the same manner. That is, this side surface 36 has a first portion 36 athat is concavely curved. This first section 36 ais arranged at an end of the leg 30 facing the base section 26.At the free end of the leg 30, i.e. at its end facing away from the base section 26, the side surface 36 has a second section 36 bwhich is convexly curved. This convex curvature serves as an insertion radius or mounting radius, as will be explained in more detail below.In this case, the first section 36 aand the second section 36 btransmit into one another again tangentially, i.e. without edges.The side surface 38 of the base section 26 is also convexly curved. In this case, the side surface 38, the side surface 34 and the side surface 36 merge tangentially, i.e. without edges, into one another over a radius.In the illustrated embodiment, the side surfaces 34, 36, 38 are configured to abut the machine housing 14, more specifically the motor portion 18 of the machine housing 14, when the lighting assembly 22 is mounted to the hand-held machine tool 12. In such a state, the side surface 38 abuts against a front surface of the machine housing 14 facing in a main working direction H of the hand-held machine tool 12. The two legs 28, 30 each abut on oppositely arranged side surfaces of the machine housing 14, wherein the side surfaces are oriented laterally with respect to the main working direction H.The side surfaces 34, 36, 38 are therefore shaped in such a way that they fit against an outer periphery of the machine housing 14 in the assembled state of the lighting assembly 22.The base section 26 and the two legs 28, 30 enclose a circumference of the receiving space 32 by more than 270°, so that in the assembled state the lighting assembly 22 is held in a form-fitting manner on the machine housing 14 and vice versa. In the event that the legs 28, 30 are elastically deformed while they abut against the machine housing 14, the fastening also has a force-fit component. The legs 28, 30 thus clamp the machine housing 14 between them in this case.In this case, the elastic deformability of the legs 28, 30 is also utilized for the mounting of the illumination assembly 22 on the hand-held power tool 12. In order to mount the lighting assembly 22 on the hand-held machine tool 12, the lighting assembly 22 is slid onto the machine housing 14, i.e. the motor section 18, substantially in the opposite direction to the main working direction H. In this case, the convex radii of the respective second sections 34 b, 36 bof the legs 28, 30 come into contact with the machine housing 14. In the relaxed, i.e. undeformed, state of the legs 28, 30, the distance A between the free ends of the legs 28, 30 is smaller than a diameter of that portion of the machine housing 14 to which the lighting assembly 22 is to be mounted.However, the lighting assembly 20 can nevertheless be slid onto this section of the machine housing 14, since the free ends of the legs 28, 30 can be moved apart by elastic deformation. Only when the section of the machine housing 14 with the greatest lateral extent has passed the free ends of the legs 28, 30 does the free ends of the legs 28, 30 move towards one another again by elastic return deformation.Removal of the illumination assembly 22 from the hand-held power tool 12 takes place in the same way, i.e. the illumination assembly 22 is pulled off from the machine housing 14 substantially along the main working direction H, wherein the limbs 28, 30 are elastically deformed in order to release the positive connection between the illumination assembly 22 and the hand-held power tool 12. In the event that there was also a force-fit connection between the lighting assembly 22 and the hand-held power tool 12, this connection is likewise released.The lighting assembly 22 further includes a lighting unit 40.This light-emitting element has a light-emitting element 42 which, in the embodiment shown, comprises a light source 44 in the form of an LED. The light element 42 is positioned on the base section 26 and points in a direction opposite to the receiving space 32. That is, in a state where the lighting assembly 22 is mounted on the hand-held machine tool 12, the lighting element 42 faces substantially along the main working direction H. This direction also corresponds to the main emission direction of the luminous element 42 or of the light source 44.The lighting unit 40 further comprises an electrical energy storage unit 46 and a switching unit 48.The electrical energy storage unit 46 is coupled to the light source 44 via the switching unit 48 so that, in a switched-on state, the light source 44 can be supplied with electrical energy from the energy storage unit 46.In this context, the switching unit 48 has a switch 50, which in the embodiment shown is designed as a pushbutton, which can be manually actuated by a user of the lighting assembly 22 and / or of the hand-held power tool 12. The switch 50 is positioned on the base section 26. The user can thus transfer the switching unit 48 from an on state to an off state by actuating the switch 50, and vice versa. Thus, the user can activate and deactivate the light source 44.The switching unit 48 further includes a vibration sensor 52.The vibration sensor 52 is coupled signal-wise to the light source 44, so that the light source 44 can be operated as a function of a detection result of the vibration sensor 52. The vibration sensor 52 is configured in this context to detect a vibration resulting from an operation of the hand-held machine tool 12. In such a case, the light source 44 may be automatically activated based on the detection of this vibration. In the event that vibrations are no longer detected by means of the vibration sensor 52, the light source 44 can be automatically deactivated. In such an operating mode of the lighting unit 40, which can also be referred to as an automatic mode, the light source 44 is thus automatically activated or deactivated on the basis of the detection result of the vibration sensor 52.Optionally, the lighting unit 40 can also comprise an electrical energy conversion unit 54, which in the embodiment shown is embodied as an energy harvesting unit. The electrical energy conversion unit 54 is designed to convert the kinetic energy resulting from operation of the hand-held power tool 12, which is present, for example, in the form of vibrations, into electrical energy.The electric power conversion unit 54 is electrically connected to the electric power storage unit 46. Thus, electric power converted from motive power by the power conversion unit 54 can be supplied to the electric power storage unit 46.In addition, the lighting unit 40 may include a display unit, not shown in detail, which is configured to display a charge state of the energy storage unit 46.In addition, the lighting unit 40 may have a charging interface, not shown in detail, which is electrically coupled to the energy storage unit 46, so that the energy storage unit 46 can be supplied with electrical energy via the charging interface. The charging interface can be designed as a charging plug or charging socket, for example according to the USB-C standard. Alternatively or additionally, the charging interface can be designed as an inductive charging interface.All components of the lighting unit 40, i.e. the lighting element 42 with the light source 44, the electrical energy storage unit 46, the switching unit 48 with the switch 50 and the vibration sensor 52 and the electrical energy conversion unit 54, are fastened to the carrier unit 24, so that in summary it can also be said that the lighting unit 40 is fastened to the carrier unit 24.In this context, some or all components of the lighting unit 40, i.e. some or all of the luminous element 42 with light source 44, electrical energy storage unit 46, switching unit 48 with switch 50 and vibration sensor 52, and also electrical energy conversion unit 54, can also be fastened to a common carrier board and can preferably be electrically contacted via the common carrier board.Alternatively, some or all components of the lighting unit 40, i.e. some or all of the lighting element 42 with light source 44, electrical energy storage unit 46, switching unit 48 with switch 50 and vibration sensor 52, and also electrical energy conversion unit 54, can be fastened on a common carrier film and preferably electrically contacted via the common carrier film.In this context, the carrier unit 24 can comprise two housing shells, which each form a section of the base section 26 and optionally sections of the legs 38, 30. Between the two housing shells, a receiving space for the components of the lighting unit 40 can be formed. The carrier board or carrier film with the components of the illumination unit 40 can be accommodated in this accommodation space. In other words, the carrier board or the carrier film can be positioned in the manner of a sandwich between the two housing shells.In addition, the lighting assembly 22 includes an antiglare member 56.In the embodiment shown, the antiglare element 56 is designed as a plate-shaped section of the carrier unit 24, more precisely the base section 26 of the carrier unit 24. During operation of the lighting assembly 22, this plate-shaped section protrudes over the lighting element 42 on an upper side, i.e. above the lighting element 42, in the main working direction H. Consequently, the glare protection element 56 prevents a user of the lighting assembly 22, more precisely of the machine tool assembly 10, from being dimmed by light generated by the light source 44.Overall, the lighting assembly 22 can be fastened to the motor section 18 of the machine housing 14 in such a way that a user can actuate the hand-held machine tool to the greatest possible extent as if the lighting assembly 22 were not present. This is illustrated in FIG. 4, in which a human hand is illustrated with a dashed line and the lighting assembly 22 is only schematically illustrated with a dotted line.Referring now to FIGS. 5-8, there is shown a second embodiment of the machine tool assembly 10 that includes a lighting assembly 22 according to a second embodiment. In this embodiment, the hand-held power tool 12 is again designed as a hand-guided grinding machine, which now has a substantially circular grinding plate for a substantially circular grinding tool 19, i.e. a substantially circular grinding wheel.In the following, only the differences from the already explained embodiment will be discussed. The above explanations also apply in a corresponding manner.On the hand-held power tool 12, more precisely on the machine housing 14, a mechanical interface 58 is now provided for fastening the lighting assembly 22.In the illustrated embodiment, the mechanical interface 58 is formed by a groove 60 that wraps around a perimeter of the motor portion 18 of the machine housing 14 by more than 270°, as will be discussed in detail below.The groove 60 is symmetrical with respect to a central plane of the machine, which includes the main working direction H and is perpendicular to the grinding tool 19. In other words, a center of the groove 60 is located on the front surface facing in the main working direction H of the hand-held machine tool 12. Starting from this center, the groove 60 extends in the same way on both sides of the motor section 18.The mechanical interface 58 has a positioning element 62, which is designed to fasten the lighting assembly 22 to the hand-held power tool 12 in a predefined position. In the embodiment shown, the positioning element 62 is formed as a projection within the groove 60. Since a height of this protrusion corresponds exactly to a depth of the groove 60, the positioning element 62 can also be considered as a local interruption in the course of the groove 60 (see in particular FIG. 7 ).The mechanical interface 58 further comprises two latching means 64.These serve to latch the lighting assembly 22 on the hand-held power tool 12, i.e. reliably hold it on the hand-held power tool 12.In the embodiment shown, the latching means 64 are each arranged at one end of the groove 60. The latching means 64 are formed by local depressions at the base of the groove 60.A transition into the local depressions is designed step-shaped or step-shaped, so that a form-fitting latching is made possible.The lighting assembly 22, more precisely the carrier element 24, is designed to be fastened to the mechanical interface 58 of the hand-held power tool 12.For this purpose, the carrier unit 24 is again substantially constructed from a base section 26 and two legs 28, 30.The legs 28, 30 extend from the base portion 26 at opposite ends thereof. The legs 28, 30 extend in the same direction.The carrier unit 24 thus has a substantially U-shape again, wherein the base section 26 represents a base of the U-shape and the two legs 28, 30 each represent a leg of the U-shape.The carrier unit 24 is made of a plastic material as before.Furthermore, each of the legs 28, 30 can be elastically deformed along a direction toward the respective other leg 28, 30 and away from the respective other leg 28, 30. This is illustrated in FIG. 8 by means of two arrows (see in particular FIG. 8 ).By means of the elastic deformation of the legs 28, 30, a distance A between the legs 28, 30 can therefore be increased starting from a relaxed, i.e. non-deformed, state of the legs 28, 30, in that the legs 28, 30 are elastically deformed. Due to their elasticity, the legs 28, 30 automatically resume their relaxed, i.e. undeformed, state as soon as the cause of the elastic deformation no longer exists.Furthermore, the legs 28, 30 and the base section 26 define a receiving space 32 for a section of the hand-held power tool. In the embodiment shown, this section is formed by the motor section 18 of the machine housing 14.In addition, each of the legs 28, 30 is provided with an elongated protrusion 66, 68 that extends along a circumference of the receiving space 32.Also, the base portion 26 includes an elongated protrusion 70 extending along a periphery of the receiving space 32.In this case, the elongate projections 66, 68, 70 merge seamlessly into one another in the embodiment shown. Further, the elongated protrusions 66, 68, 70 are configured to engage the groove 60.In this case, a positioning element 72 for positioning the illumination assembly 22 on the hand-held power tool 12 is also formed on the carrier unit 24, more precisely on the base section 26. For this purpose, the positioning element 72 interacts with the positioning element 62 of the hand-held power tool 12.In the embodiment shown, the positioning element 72 is formed as a depression in which the positioning element 62, which is formed as a projection or elevation, can be accommodated. In other words, the elongated protrusion 70 on the base portion 26 is interrupted by the depression forming the positioning element 72.It is understood that, for the purpose of precise positioning, the depression forming the positioning element 72 is only slightly wider than the projection forming the positioning element 62.In addition, both legs 28, 30 are provided with a latching device 74, 76.The latching devices 74, 76 serve for latching, i.e. reliably holding, the lighting assembly 22 on the hand-held power tool 12.In the embodiment shown, the latching devices are therefore designed as projection elements which project with respect to the elongate projections 66, 68. The projection elements can be accommodated in the latching means 64 designed as a depression.In this case, the protruding elements each have an insertion bevel 78, 80 at their ends pointing in the direction of the free ends of the limbs 28, 30, which lead-in bevel serve for the simple mounting of the lighting assembly 22 on the hand-held power tool 12.At their ends facing away from the free ends of the legs 28, 30, the projection elements merge step-like into the elongated projections 66, 68. This serves to form a positive connection between the lighting assembly 22 and the hand-held power tool 12.Thus, in the embodiment of Figs. 5-8, the side surface 34 of the leg 28 facing the leg 30 is formed by an end surface of the elongated protrusion 66. The side surface 34 is concavely curved outside the latching device 74.Likewise, the side surface 36 of the leg 30 facing the leg 28 is formed by an end surface of the elongated protrusion 68. The side surface 36 is likewise concavely curved outside the latching device 76.Also, the side surface 38 of the base portion 26 is formed by an end surface of the elongated protrusion 70. The side surface 38 is concavely curved.In this case, the side surface 38, the side surface 34 and the side surface 36 merge tangentially, i.e. without edges, into one another over a radius.In the illustrated embodiment, the side surfaces 34, 36, 38 are configured to abut the machine housing 14, more specifically, a bottom of the groove 60 provided on the motor portion 18 of the machine housing 14, when the lighting assembly 22 is mounted to the hand-held machine tool 12.In such a state, the side surface 38 abuts a bottom of a portion of the groove 60 facing the main working direction H of the hand-held machine tool 12.The side surfaces 34, 36 of the two legs 28, 30 each bear against a base of a section of the groove 60 which is oriented laterally with respect to the main working direction H.The side surfaces 34, 36, 38 are therefore shaped in such a way that they rest against a groove base of the groove 60 in the assembled state of the lighting assembly 22.In this case, the base section 26 and the two limbs 28, 30 enclose a circumference of the receiving space 32 by more than 270°, with the result that, in the assembled state, the lighting assembly 22 is held in a positive-locking manner on the machine housing 14, more precisely on the mechanical interface 58, and vice versa. In the event that the legs 28, 30 are elastically deformed while they abut against the machine housing 14, the fastening also has a force-fit component. The legs 28, 30 thus clamp the machine housing 14 between them in this case.In this case, the elastic deformability of the legs 28, 30 is also utilized for the mounting of the illumination assembly 22 on the hand-held power tool 12.In order to mount the lighting assembly 22 on the hand-held machine tool 12, the lighting assembly 22 is slid onto the machine housing 14, i.e. the motor section 18, substantially in the opposite direction to the main working direction H. In this case, the projection elements of the latching devices 74, 76, in particular the insertion slopes 78, 80, come into contact first with the machine housing 14, more precisely with the groove 60. In the relaxed, i.e. undeformed, state of the legs 28, 30, the distance A between the free ends of the legs 28, 30 is smaller than a diameter of that portion of the machine housing 14 to which the lighting assembly 22 is to be mounted.However, the lighting assembly 22 can nevertheless be slid onto this section of the machine housing 14, since the free ends of the legs 28, 30 can be moved apart by elastic deformation. This allows the elongated protrusions 66, 68 to also engage in laterally opposite portions of the groove 60 and be displaced counter to the main working direction H within the groove 60.Only when the section of the machine housing 14 with the greatest lateral extent has passed the free ends of the legs 28, 30 does the free ends of the legs 28, 30 move towards one another again by elastic return deformation.Furthermore, the free ends of the legs 28, 30 move abruptly toward one another as a result of elastic return deformation when the latching devices 74, 76 come into engagement with the latching means 64 of the hand-held power tool, i.e. when the lighting assembly 22 is latched to the hand-held power tool 12.In this way, the elongated protrusion 70 also engages the front-side portion of the groove 60, and the positioning member 72 of the lighting assembly 22 comes into cooperation with the positioning member 62 of the hand-held machine tool 12.Removal of the illumination assembly 22 from the hand-held power tool 12 takes place in the same way, i.e. the illumination assembly 22 is pulled off from the machine housing 14 substantially along the main working direction H, wherein the limbs 28, 30 are elastically deformed in order to release the positive connection between the illumination assembly 22 and the hand-held power tool 12. In the event that there was also a force-fit connection between the lighting assembly 22 and the hand-held power tool 12, this connection is likewise released. In this case, the elongate projections 66, 68 and the latching devices 74, 76 slide along the groove 60 substantially along the main working direction H.In the embodiment according to FIGS. 5 to 8, the carrier unit 24 also has a guide surface 82. The guide surface 82 is designed to guide workpiece particles which are produced in the machining zone in the direction of the collecting container 20 and at the same time to protect a user of the hand-held power tool 12 from workpiece particles.In the illustrated embodiment, the guide surface 82 is formed as an inner surface of a peripheral skirt 84 which extends from the free end of the leg 28 to the free end of the leg 30.In this case, the encircling skirt 84 in the mounted state of the lighting assembly 22 spans a region from the mechanical interface 58 to an edge of the grinding tool 19.Also provided in the skirt 84 are some apertures 86. These serve to enable a user to visually recognize an operating state of the grinding tool 19. In particular, a user can see, at a glance through one of the openings 86, whether the grinding tool 19 is rotating or not. A certain deterioration of the guide function for workpiece particles is accepted in this case.For the sake of clarity, only some of the openings 86 are provided with a reference sign.In order to make the aforementioned elastic deformability of the carrier unit 24 easy for a user to manipulate, two recessed grips 88 are furthermore provided on the skirt 84.The gripping depressions 88 are arranged in the region of the free ends of the limbs 28, 30. Furthermore, the depressions 88 are designed to receive a human finger at least in sections, so that a user of the hand-held power tool 12 can respectively grip into one of the depressions 88 with a finger of a hand and thus manually pull apart the free ends of the limbs 28, 30, wherein the carrier unit 24 is elastically deformed. This facilitates in particular the removal of the lighting assembly 22 from the hand-held power tool 12, since in this way the latching can be easily released.As before, the lighting assembly 22 also includes a lighting unit 40.In the embodiment according to FIGS. 5 to 8, this has a plurality of light sources 44, which are arranged at a grinding tool-side end of the skirt 84 along a line which substantially corresponds to the end-side periphery of the skirt 84.The light sources 44 are thus distributed both over the base section 26 and over the legs 28, 30. The light sources 44 consequently illuminate both along the main working direction H of the hand-held power tool 12 and laterally thereto.The light sources 44 are evenly distributed around the circumference.As before, each light source 44 is formed by an LED.For the sake of better clarity, only some light sources 44 are provided with a reference sign in the figures.In order that the position of the light sources 44 can be better seen, a lens element which covers the light sources 44 and scatters the emitted light is also omitted in FIGS. 5 to 8. In the embodiment shown, the lens element is designed as an elongate, translucent or transparent component which covers all light sources 44.Optionally, an outer side of the component forming the lens element can have a contact surface for placing the illumination assembly 22 against an obstacle or a workpiece section. The hand-held power tool 12 can thus be moved with high precision relative to this obstacle or workpiece section, bearing such a bearing surface against an obstacle or a workpiece section.It is understood that for this option, the lighting assembly 22 must be wider than the hand-held power tool 12. In the embodiment shown, the lighting assembly 22 is only very slightly, i.e., less than 5%, wider than the hand-held power tool 12 (see in particular FIG. 6 ).In a state in which the illumination assembly 22 is fastened to the hand-held power tool 12, the light sources 44 are therefore arranged very close above a workpiece.As before, the lighting unit 40 also has an electrical energy storage unit 46 and a switching unit 48, which are only schematically shown in FIGS. 5 to 8. It is understood that in particular the positioning of the switching unit 48, in particular of the switch 50, is merely exemplary. The switching unit 48, in particular the switch 50, can alternatively also be arranged laterally on the carrier unit 24.The switching unit 48 is equipped with a switch 50 and a vibration sensor 52.An electrical energy conversion unit 54 can also optionally be provided again.As before, all components of the lighting unit 40, i.e. the lighting element 42 with the light source 44, the electrical energy storage unit 46, the switching unit 48 with the switch 50 and the vibration sensor 52 and the electrical energy conversion unit 54, are fastened to the carrier unit 24, so that in summary it can also be said that the lighting unit 40 is fastened to the carrier unit 24.FIGS. 9 and 10 show a third embodiment of the power tool assembly 10, which comprises a lighting assembly 22 according to a third embodiment. In this embodiment, the hand-held power tool 12 corresponds to the hand-held power tool 12 from the second embodiment of the power tool assembly 10, which has already been explained with reference to FIGS. 5 to 8. In particular, the mechanical interface 58 is identical in both embodiments.In the following, only the differences from the already explained embodiments will be discussed again. The above explanations also apply in a corresponding manner.In this connection, the lighting assembly 22 according to the third embodiment is different from the lighting assembly 22 according to the second embodiment in that neither a guide surface 82 nor a skirt 84 are provided in the third embodiment.Accordingly, the light sources 44, which correspond in their configuration and arrangement substantially to the arrangement of the light sources 44 from the second embodiment, are positioned in the region of the elongate projections 66, 68, 70. More specifically, the light sources 44 are disposed on opposite sides of the legs 28, 30 and the base portion 26 with respect to the elongated protrusions 66, 68, 70.In order that the position of the light sources 44 is more visible, a lens element which covers the light sources 44 and scatters emitted light is omitted again in FIGS. 10 and 11. In the embodiment shown, the lens element is designed as an elongate, translucent or transparent component which covers all light sources 44.Furthermore, for the sake of better clarity, the further components of the lighting unit 40, i.e. the electrical energy storage unit 46, the switching unit 48 with the switch 50 and the vibration sensor 52 and the electrical energy conversion unit 54, are not shown.Similar to the first embodiment, but in contrast to the second embodiment, the lighting assembly 22 in the third embodiment comprises an antiglare element 56, which is formed as a circumferential protrusion, which lies above the light sources 44 during operation of the lighting assembly 22, i.e. in a position in which the lighting assembly 22 is fastened to the hand-held machine tool 12. In other words, the circumferential protrusion separates the light sources 44 from a user who grasps the hand-held power tool 12 on the grip portion 16, for example.In the third embodiment, the light sources 44 and the illumination assembly 22 are thus provided altogether at a certain distance from the grinding tool 19.Moreover, in the third embodiment, the hand-held machine tool 12 is wider than the lighting assembly 22 in a direction transverse to the main working direction H. In other words, the lighting assembly is narrower than the hand-held machine tool 12 in this direction (see FIG. 10 in particular ).FIG. 11 shows a fourth embodiment of the power tool assembly 10, which comprises a lighting assembly 22 according to a fourth embodiment. In this embodiment, the hand-held power tool 12 corresponds to the hand-held power tool 12 from the second and third embodiments of the power tool assembly 10, which have already been explained with reference to FIGS. 5 to 8 and FIGS. 9 and 10. In particular, the mechanical interface 58 is of identical design in all the embodiments mentioned.In the following, only the differences from the already explained embodiments will be discussed again. The above explanations also apply in a corresponding manner.The lighting assembly 22 according to the fourth embodiment may be considered a combination of the lighting assembly 22 according to the second embodiment and the third embodiment.In this connection, in the lighting assembly 22 according to the fourth embodiment, the light sources 44 are arranged on the support unit 24 in the same manner as in the third embodiment.As already in the case of the third embodiment, the further components of the lighting unit 40, i.e. the electrical energy storage unit 46, the switching unit 48 with the switch 50 and the vibration sensor 52 and the electrical energy conversion unit 54, are also not shown here for the sake of better clarity.However, in addition, the lighting assembly 22 according to the fourth embodiment has a guide surface 82 provided on a skirt 84. Here, the skirt 84 and the guide surface 82 are identical to the lighting assembly 22 according to the second embodiment. Only the light sources 44 are now no longer arranged at the grinding tool-side end of the skirt 84.Instead, however, a contact surface 90 running around along the carrier unit 24 of the illumination assembly 22 is now provided on the grinding tool-side end of the skirt 84 for placing the illumination assembly 22 against an obstacle or a workpiece section. The hand-held power tool 12 can thus be moved relative to this obstacle or workpiece section with high precision, bearing the bearing surface 90 against an obstacle or a workpiece section.It is understood that for this option, the lighting assembly 22 must be wider than the hand-held power tool 12.This configuration also results in the light sources 44 being offset with respect to the contact surface 90 in the direction of the receiving space 32.This has the advantage, in particular in comparison with the lighting assembly 22 according to the second embodiment, in which a contact surface is optionally provided by a component forming a lens element, that the contact surface 90 and the light sources 44 are separated from one another. A risk that the light sources 44 will be damaged by utilizing the contact surface 90, i.e. by the contact surface 90 being placed against an obstacle or against a section of a workpiece, is thus very low.Moreover, the offset of the light sources 44 allows good illumination of the working area, even in a situation in which the illumination assembly 22 bears against an obstacle or a section of a workpiece via the contact surface 90.Referring now to FIGS. 12-14, there is shown a fifth embodiment of the machine tool assembly 10 that includes a lighting assembly 22 according to a fifth embodiment. In this embodiment, the hand-held power tool 12 has a substantially rectangular tool interface which is designed to be coupled to a substantially rectangular grinding tool 19. Otherwise, the hand-held power tool 12 of the power tool assembly 10 according to the fifth embodiment corresponds to the hand-held power tool 12 from the second, third and fourth embodiments of the power tool assembly 10.In the following, only the differences from the already explained embodiments will be discussed again. The above explanations also apply in a corresponding manner.The power tool assembly 10 of the fifth embodiment is explained here in particular starting from the power tool assembly 10 of the second embodiment. In this connection, the machine tool assembly 10 according to the fifth embodiment can be regarded as a variant or modification of the machine tool assembly 10 of the second embodiment.Here, the skirt 84 is adapted to the rectangular shape of the grinding tool 19.Furthermore, instead of the openings 86, recesses 92 are provided at the front corners, in the main working direction H, of the shape of the skirt 84 following the rectangular contour of the grinding tool 19. The recesses 92 serve to enable a user of the power tool assembly 10 to visually grasp the grinding tool 19.Moreover, the recesses 92 allow a corner of the grinding tool 19 to directly interact with a workpiece, i.e., without an intermediate portion of the lighting assembly 22, particularly a portion of the skirt 84.In order that the position of the light sources 44 can be better seen, lens elements which each cover a group of light sources 44 are omitted in FIGS. 12 to 14. In the embodiment shown, the lens elements are embodied as elongate, translucent or transparent components, each of which covers a group of light sources 44.In this case, in the fifth embodiment, a total of three lens elements are provided, wherein, when viewed along the main working direction H, one of the lens elements covers the light sources 44 on a front side of the lighting assembly 22. The two other lens elements cover the laterally arranged light sources 44 in each case.Optionally, outer sides of the components forming the lens elements can have a contact surface for placing the illumination assembly 22 against an obstacle or a workpiece section. The hand-held power tool 12 can thus be moved with high precision relative to this obstacle or workpiece section, bearing such a bearing surface against an obstacle or a workpiece section.It is understood that for this option, the lighting assembly 22 must be wider than the hand-held power tool 12.FIGS. 15 and 16 show a sixth embodiment of the power tool assembly 10, which comprises a lighting assembly 22 according to a sixth embodiment. Here, the hand-held machine tool 12 in this embodiment is the same as the hand-held machine tool 12 of the machine tool assembly 10 according to the fifth embodiment.The lighting assembly 22 is identical to the lighting assembly 22 from FIGS. 9 and 10, i.e. the lighting assembly 22 according to the sixth embodiment corresponds to the lighting assembly 22 according to the third embodiment.However, in the sixth embodiment, due to the fact that the grinding tool 19 is rectangular in shape, the lighting assembly 22 is wider than the hand-held machine tool 12 in a direction transverse to the main working direction H.In the exemplary embodiment shown, the illumination assembly 22 is approximately 10% wider than the hand-held power tool 12, i.e. than the grinding tool 19.It is understood that, analogously to the fourth embodiment, a variant of the power tool assembly 10 is also conceivable, which corresponds to a combination of the fifth embodiment and the sixth embodiment. The result would be a machine tool assembly 10 with a lighting assembly 22 that corresponds to the embodiment of FIG. 11 except for matching the rectangular grinding tool 19.Referring now to FIGS. 17 through 19, there is shown a seventh embodiment of the machine tool assembly 10 including a lighting assembly 22 according to a seventh embodiment. In this embodiment, the hand-held power tool 12 has a triangular tool interface in which the edges are convexly curved outwards. This tool interface is designed to be coupled to a triangular grinding tool 19, in which the edges are likewise convexly curved outwards.Such hand-held power tools 12 and grinding tools 19 are also referred to as delta-shaped.Otherwise, the hand-held power tool 12 of the power tool assembly 10 according to the seventh embodiment corresponds to the hand-held power tool 12 from the second, third, fourth, fifth and sixth embodiments of the power tool assembly 10.In the following, only the differences from the already explained embodiments will be discussed again. The above explanations also apply in a corresponding manner.The power tool assembly 10 of the seventh embodiment is explained here in particular starting from the power tool assembly 10 of the second and fifth embodiments. In this connection, the machine tool assembly 10 according to the seventh embodiment can be regarded as a variant or modification of the machine tool assembly 10 of the second and / or fifth embodiment.Here, the skirt 84 is adapted to the delta shape of the grinding tool 19.In addition, openings 86 are now provided in the skirt 84 as well as a recess 92, which lies along the main working direction H in the region of the front tip of the delta shape. The recess 92 serves to enable a user of the power tool assembly 10 to visually grasp the grinding tool 19.Moreover, the recesses 92 allow the front corner of the grinding tool 19 to directly interact with a workpiece, i.e., without an intermediate portion of the lighting assembly 22, particularly a portion of the skirt 84.In order that the position of the light sources 44 is more visible, lens elements which each cover a group of light sources 44 and scatter emitted light are omitted in FIGS. 17 to 19. In the embodiment shown, the lens elements are embodied as elongate, translucent or transparent components, each of which covers a group of light sources 44.Here, in the seventh embodiment, a total of two lens elements are provided, each of which is disposed on opposite sides with respect to the main working direction HOptionally, outer sides of the components forming the lens elements can have a contact surface for placing the illumination assembly 22 against an obstacle or a workpiece section. The hand-held power tool 12 can thus be moved with high precision relative to this obstacle or workpiece section, bearing such a bearing surface against an obstacle or a workpiece section.It should be appreciated that for this option, the lighting assembly 22 must be wider than the hand-held machine tool 12.In the embodiment shown, the illumination assembly 22 is only very slightly, i.e. less than 10%, wider than the hand-held power tool 12.FIGS. 20 and 21 show an eighth embodiment of the power tool assembly 10, which comprises a lighting assembly 22 according to an eighth embodiment. Here, the hand-held machine tool 12 in this embodiment is the same as the hand-held machine tool 12 of the machine tool assembly 10 from the seventh embodiment.The lighting assembly 22 is identical to the lighting assembly 22 from FIGS. 9 and 10 and from FIGS. 15 and 16, i.e. the lighting assembly 22 according to the eighth embodiment corresponds to the lighting assembly 22 according to the third embodiment and the sixth embodiment.However, in the eighth embodiment, the lighting assembly 22 is narrower than the hand-held machine tool 12 in a direction transverse to the main working direction H.It is understood that, analogously to the fourth embodiment, a variant of the power tool assembly 10 is also conceivable, which corresponds to a combination of the seventh embodiment and the eighth embodiment. The result would be a machine tool assembly 10 with a lighting assembly 22 that corresponds to the embodiment of FIG. 11 except for matching the delta-shaped grinding tool 19.Referring now to FIG. 22, there is shown a ninth embodiment of a lighting assembly 22 compatible with the hand-held machine tools 12 of FIGS. 5-21. Again, only the differences from the above embodiments will be discussed.Here, the lighting assembly 22 according to the ninth embodiment particularly constitutes a modification of the lighting assembly 22 according to the first embodiment.In the lighting assembly 22 according to the ninth embodiment, the leg 28 is composed of two leg halves 28 a, 28 bextending substantially parallel. The two leg halves 28 a, 28 bare separated by an elongated passage channel 94 extending along the same direction.The leg 30 is constructed in the same manner. This means that the leg 30 is composed of two leg halves 30 a, 30 b, which run substantially parallel and are separated by an elongate passage channel 96 extending along the same direction.The base section 26 is also composed of two base section halves 26 a, 26 b, which are separated by an elongated passage channel 98. In an assembled state of the lighting assembly 22, the through-channels 94, 96, 98 are arranged along a circumference of the machine housing 14, more precisely of the motor section 18.The size and position of the through-channels 94, 96, 98 are matched to the hand-held power tool 12 in such a way that they are situated via ventilation outlets and / or ventilation inlets of the hand-held power tool 12. Consequently, air flowing out of or into these vent outlets can flow through the passages 94, 96, 98. Thus, ventilation is not obstructed by the lighting assembly 22.In this connection, the leg halves 28 a, 30 aillustrated at the top in FIG. 22 and the base section half 26 aillustrated at the top have side surfaces which correspond in terms of their structure substantially to the side surfaces from the first embodiment of the lighting assembly 22.The side surfaces of the leg halves 28 b, 30 billustrated at the bottom in FIG. 22 and of the base section half 26 billustrated at the bottom in FIG. 22 correspond substantially to the side surfaces of the embodiments according to FIGS. 5 to 21.The lighting assembly 22 according to the ninth embodiment can therefore be fastened on the one hand to an interface 58 with a groove 60 of a machine housing 14 of a hand-held machine tool 12. At the same time, the lighting assembly 22 can conform to a periphery of the machine housing 14 on which no groove is provided.FIGS. 23 and 24 show further embodiments of the power tool assembly 10.In this case, a lighting assembly 22 is only schematically shown in each case. The lighting assembly 22 is in particular a lighting assembly 22 according to the first embodiment (see in particular FIG. 3 ) or a lighting assembly 22 according to the ninth embodiment (see FIG. 22 ).However, the hand-held machine tool 12 is now no longer designed as a hand-guided grinding machine.Rather, in the embodiment according to FIG. 23, the hand-held power tool 12 is designed as a hand-guided saber saw.In the embodiment according to FIG. 24, the hand-held power tool 12 is designed as a so-called oscillator.It is understood that the hand-held power tool 12 can also be designed differently, for example as an angle grinder. The illumination assembly 22 can also be used in connection with such hand-held power tools.FIG. 25 shows a modular unit 100 which can be realized by means of each of the machine tool assemblies 10 already explained.In this case, the modular unit 100 always comprises a hand-held power tool 12, a lighting assembly 22 and a spacer assembly 102. The lighting assembly 22 is a lighting assembly 22 according to one of the already explained embodiments, which is compatible with the hand-held machine tool 12.The spacer assembly 102 comprises a circumferential contact surface 90 for contacting the spacer assembly 102 against an obstacle or a workpiece section.The modular unit 100 shown in FIG. 25 also comprises an optional guide assembly 104. The guide assembly 104 serves to place the hand-held power tool 12 at a specific angle on a workpiece, so that, for example, edges can be machined with high precision. For this purpose, the guide assembly 104 comprises a guide surface 106 which is provided to be placed against the workpiece. Such guide assemblies 104 can also be referred to as angle placement aids.In this case, the hand-held power tool 12 is equipped with the mechanical interface 58, which has already been explained further above. More generally, that portion of the hand-held power tool 12 that includes the mechanical interface 58 may also be referred to as a fastening portion.Both the lighting assembly 22, the spacer assembly 102 and the guide assembly 104 are compatible with this mechanical interface 58.Thus, a user can selectively attach one of the lighting assembly 22, the spacer assembly 102, and the guide assembly 104 to the hand-held machine tool 12 via the mechanical interface 58. Depending on the processing task to be performed, the user can thus select the most suitable component from the lighting assembly 22, the guide assembly 104 and the spacer assembly 102.List of reference characters10 Power tool assembly 12 Hand-held power tool 14 Machine housing 16 Handle portion of the machine housing 18 Motor portion of the machine housing 19 Grinding tool 20 Collection container 22 Lighting assembly 24 Carrier unit 26 Base portion of the carrier unit 26 aBase portion half 26 bBase portion half 28 Leg of the carrier unit 28 a Leg half 28 b Leg half 30 Leg of the carrier unit 30 a Leg half 30 b Leg half 32 Receiving space for a portion of the hand-held power tool 34 Side surface 34 aFirst portion of the side surface 34 bSecond portion of the side surface 36 Side surface 36 aFirst portion of the side surface 36 bSecond portion of the side surface 38 Side surface 40 Lighting unit 42 Lighting element 44 Light source 46 Electrical energy storage unit 48 Switching unit 50 Switch 52 Vibration sensor 54 Electrical energy conversion unit 56 Antiglare element 58 Mechanical interface 60 Groove 62 Positioning element 64 Latching means 66 Elongated projection 68 Elongated projection 70 Elongated projection 72 Positioning element 74 Latching means 76 Latching means 78 Insertion slope 80 Insertion slope 82 Guide surface 84 Skirt 86 Opening 88 Recessed grip 90 Contact surface 92 Recess 94 Passage channel 96 Passage channel 98 Passage channel 100 Modular structure 102 Spacer assembly 104 Guide assembly 106 Guide surface A Distance between the legs of the carrier unit B 1 Width of the leg of the carrier unit B 2 Width of the leg of the carrier unit BB Width of the base portion of the carrier unit H Main working direction

Claims

Lighting assembly (22) for selective attachment to a hand-held power tool (12), in particular to a hand-held grinding machine, comprising a carrier unit (24) with a base section (26) and two legs (28, 30), wherein the legs (28, 30) extend from the base section (26) on opposite sides, such that the base section (26) and the two legs (28, 30) span a receiving space (32) for non-positively and / or positively receiving a section of the hand-held power tool (12), and a lighting unit (40) with at least one light source (44), wherein the lighting unit (40) is attached to the carrier unit (24).The lighting assembly (22) according to claim 1, wherein at least one of the legs (28, 30) is elastically deformable at least in sections and at least along a direction towards the respective other leg (28, 30) and / or away from the respective other leg (28, 30), such that the carrier unit (24) can be fastened to the hand-held power tool (12) and / or can be removed from the hand-held power tool (12) with elastic deformation of the at least one of the legs (28, 30).The lighting assembly (22) of claim 1 or 2, wherein the base portion (26) and the two legs (28, 30) enclose a perimeter of the receiving space (32) by more than 270°.Lighting assembly (22) according to one of the preceding claims, wherein at least one of the limbs (28, 30) has a side face (34, 36) which faces the respective other limb (28, 30) and which is curved at least in sections.The lighting assembly (22) of any preceding claim, wherein a perimeter of the receiving space (32) is curved at a transition from at least one of the legs (28, 30) to the base portion (26).The lighting assembly (22) according to any one of the preceding claims, wherein at least one of the legs (28, 30) comprises a latching device (74, 76) for latching the lighting assembly (22) to the hand-held power tool (12).The lighting assembly (22) according to claim 6, wherein the latching device (74, 76) has at least one insertion bevel (78, 80).The lighting assembly (22) according to any one of the preceding claims, wherein the base portion (26) comprises a positioning element (72) for positioning the lighting assembly (22) on the hand-held machine tool (12).The lighting assembly (22) according to any one of the preceding claims, wherein at least one of the legs (28, 30) comprises an elongate protrusion (66, 68), which extends at least in sections along a circumference of the receiving space and is designed to engage in an associated groove (60) for fastening the lighting assembly (22) to the hand-held power tool (12).The lighting assembly (22) according to any one of the preceding claims, wherein the lighting unit (40) comprises at least one elongated light guiding element and / or a plurality of light sources (44).The lighting assembly (22) according to any one of the preceding claims, wherein the lighting unit (40) comprises a vibration sensor (52) which is coupled signal-wise to the light source (44), such that the light source (44) is operable depending on a detection result of the vibration sensor (52).The lighting assembly (22) of any preceding claim, wherein the lighting unit (40) comprises an electrical energy storage unit (46) electrically couplable to the light source (44).The lighting assembly (22) according to any of the preceding claims, wherein the lighting unit (40) comprises an electrical power conversion unit (54) electrically couplable to the light source (44).Lighting assembly (22) according to one of the preceding claims, wherein the carrier unit (24) has at least one passage channel (94, 96, 98) for air.The lighting assembly (22) of any preceding claim, wherein the support unit (24) comprises at least one human finger grip well (88).The lighting assembly (22) according to any one of the preceding claims, wherein the carrier unit (24) comprises at least one guiding surface (82) for guiding workpiece particles and / or for protecting against workpiece particles.The lighting assembly (22) according to any of the preceding claims, wherein the carrier unit (24) comprises at least one abutment surface (90) for abutment of the lighting assembly (22) against an obstacle or a workpiece portion.The lighting assembly (22) according to claim 17, wherein the at least one light source (44) is offset with respect to the at least one abutment surface (90) in the direction of the receiving space (32).The lighting assembly (22) of any preceding claim, further comprising an antiglare member (56).The lighting assembly (22) according to any one of the preceding claims, wherein in a plan view along a viewing direction perpendicular to the directions along which the legs (28, 30) extend from the base portion (26), a width (B1, B2) of each of the two legs (28, 30) is smaller than a width (BB) of the base portion (26).Power tool assembly (10) having a hand-held power tool (12), in particular a hand-guided grinding machine which comprises a machine housing (14), and having a lighting assembly (22) according to one of the preceding claims, which is fastened to the hand-held power tool (12), wherein the base section (26) of the lighting assembly (22) bears at least in sections against a front surface of the machine housing (14) which faces in a main working direction (H) of the hand-held power tool (12), and the two limbs (28, 30) each bear at least in sections against oppositely arranged side surfaces of the machine housing (14) which are oriented laterally with respect to the main working direction (H).The machine tool assembly (10) of claim 21, wherein in a direction transverse to the main working direction (H), the hand-held machine tool (12) is wider than the lighting assembly (22).Machine tool assembly (10) according to claim 21, wherein in a direction transverse to the main working direction (H) the illumination assembly (22) is at most 15%, preferably at most 10% or at most 5%, wider than the hand-held machine tool (12).A modular kit (100) comprising a hand-held power tool (12), a lighting assembly (22) according to any one of claims 1 to 20 and a spacer assembly (102) comprising at least one abutment surface (90) for engaging the spacer assembly (102) with an obstacle or a workpiece portion, wherein optionally the lighting assembly (22) or the spacer assembly (102) is attached to an attachment portion of the hand-held power tool (12).The kit (100) of claim 24, further comprising a guide assembly (104) comprising at least one guide surface (106) for guiding the hand-held machine tool (12) relative to a workpiece, optionally wherein the lighting assembly (22) or the spacer assembly (102) or the guide assembly (104) is attached to the attachment portion of the hand-held machine tool (12).

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