Hand-held power tool, in particular grinding machine, hand-held power tool device, protection device, hand-held power tool system and method for producing a hand-held power tool device

Abstract

The invention relates to a grinding machine (10a; 10b), in particular a cordless grinding machine, preferably an orbital sander or random orbital sander, with a tool holder (12a; 12b), in particular a grinding pad, with a drive unit (14a) for driving the tool holder (12a; 12b) and with a housing unit (16a; 16b) which has a bow handle (18a; 18b). It is proposed that the ratio of a maximum longitudinal extent (22a) of a grip recess (20a; 20b) of the bow handle (18a; 18b) to a maximum longitudinal extent (24a) of the tool holder (12a; 12b) is at least 0.35 and at most 0.5.

Description

State of the art

[0001] A grinding machine with a tool holder, with a drive unit for driving the tool holder and with a housing unit which has a bow handle has already been proposed. Disclosure of the invention

[0002] The invention is based on a sanding machine, in particular a cordless sanding machine, preferably an orbital sander or eccentric sander, with a tool holder, in particular a sanding pad, with a drive unit for driving the tool holder and with a housing unit which has a bow handle.

[0003] It is proposed that the ratio of a maximum longitudinal extent of a grip recess of the bow handle to a maximum longitudinal extent of the tool holder be at least 0.35 and at most 0.5. Advantageously, a grinding machine with particularly favorable ergonomic properties can be provided. Advantageously, depending on the size of the tool holder, a particularly large amount of space can be provided for an operator's fingers in the grip recess for guiding the grinding machine. Particularly precise and / or safe handling of the grinding machine can be achieved. Advantageously, a particularly high level of operating comfort can be achieved.

[0004] The sander is preferably designed as a battery-operated sander. Alternatively, however, it is also conceivable for the sander to be designed as a mains-operated sander. The sander is preferably designed as an eccentric sander. Alternatively, however, it is also conceivable for the sander to be designed as an orbital sander, a delta sander, a flower sander, or the like.

[0005] The tool holder is preferably designed as a sanding pad. The tool holder is preferably designed as a round sanding pad. Alternatively, however, it is also conceivable for the tool holder to be designed as a delta pad, as a square, preferably rectangular, sanding pad or as another sanding pad that appears appropriate to a person skilled in the art. The tool holder has, in particular, fastening means for fastening a tool, preferably an abrasive. The fastening means comprise, for example, one or more hook-and-loop surfaces, one or more clamps, a combination of these or other fastening means that appear appropriate to a person skilled in the art. The abrasive is preferably designed as sandpaper, as an abrasive fleece, as a sanding grid or the like.

[0006] The drive unit has, in particular, a drive element, preferably an eccentric. The drive element is preferably provided for driving about a drive axis of the drive unit. The grinding machine preferably has an output unit. The tool holder is, in particular, part of the output unit. The output unit preferably has a connecting piece. The connecting piece is arranged, preferably fastened, to the drive element. The tool holder is preferably fastened to the connecting piece, in particular in a rotationally fixed manner, for example by means of a screw or the like. The output element has, in particular, an output axis. The output axis preferably runs at least substantially parallel to the drive axis. The drive axis is, in particular, spaced apart from the output axis."Substantially parallel" can be understood here as an alignment of a direction relative to a reference direction, in particular in a plane, wherein the direction has a deviation from the reference direction, in particular less than 8°, advantageously less than 5°, and particularly advantageously less than 2°. In particular, the connecting piece and / or the tool holder, preferably the output shaft, moves around the drive axis, preferably in a circular motion, in at least one operating state. The drive element is particularly intended to drive the connecting piece and / or the tool holder, preferably the output shaft, in a preferably circular motion around the drive axis of the drive element.

[0007] "Intended" should be understood as specifically configured, specifically designed, and / or specially equipped. The fact that an object is intended for a specific function should be understood as meaning that the object fulfills and / or performs this specific function in at least one application and / or operating state.

[0008] The connecting piece is preferably rotatably mounted on the drive element, in particular rotatable about the output axis. The grinding machine preferably has at least one bearing element. The connecting piece is mounted on the drive element, in particular via the bearing element, rotatably mounted on the drive element, preferably rotatable about the output axis. The bearing element is preferably arranged between the drive element and the connecting piece. The bearing element is preferably designed as a radial bearing, in particular as a rolling bearing, for example as a ball bearing, or as a plain bearing.

[0009] The drive unit is preferably provided for driving the output unit, in particular the tool holder. The drive unit preferably comprises an electric motor or the like, in particular for driving the drive element.

[0010] The grinding machine preferably has a housing unit. The housing unit preferably has a drive housing for accommodating the drive unit. The drive housing preferably has a fan housing for accommodating an extraction fan. The extraction fan is preferably provided to extract material removed from the workpiece during machining and in particular to blow it out of a dust outlet of the grinding machine. The drive housing preferably has a motor housing for accommodating the drive unit. The fan housing is preferably arranged between the motor housing and the tool holder. The extraction fan is preferably made of metal, in particular cast. Alternatively, however, it is also conceivable for the extraction fan to be made of plastic or a combination of plastic and metal.

[0011] The housing unit, in particular, comprises a handle housing. The handle bar is preferably part of the handle housing. The handle housing preferably comprises two handle housing shells, which are connected to one another, in particular, in a parting plane of the handle housing. The handle housing is preferably designed separately from the drive housing, in particular arranged at a distance from the drive housing. The handle housing, in particular, has a shell construction with the two handle housing shells as half shells.

[0012] The handle preferably has a finger grip surface. The handle preferably has two walls, in particular side walls, which delimit the finger grip surface, in particular in a main extension plane of the handle and in a direction perpendicular to the drive axis. A "main extension plane" of a structural unit or element can be understood as a plane that is parallel to a largest side surface of the smallest possible imaginary cuboid, which just completely encloses the structural unit, and in particular runs through the center of the cuboid. The handle is preferably designed as a closed handle. Alternatively, however, it is also conceivable for the handle to be designed as an open handle. The walls preferably define, in particular delimit, the handle recess at least partially.

[0013] The maximum longitudinal extent of the handle recess preferably runs at least substantially parallel to a tool receiving surface of the tool holder. The maximum longitudinal extent of the handle recess preferably runs in the main extension plane of the bow handle, preferably in a main extension plane of the handle housing, in particular in the parting plane of the handle housing. The main extension plane of the bow handle preferably corresponds to the main extension plane of the handle housing. Alternatively, it is conceivable that the main extension plane of the bow handle is different from the main extension plane of the handle housing. The parting plane is preferably congruent with the main extension plane of the handle housing and / or the main extension plane of the bow handle. Alternatively, however, it is also conceivable that the main extension plane of the bow handle and / or the main extension plane of the handle housing are / is different from the parting plane.

[0014] The tool-receiving surface preferably extends at least substantially perpendicular to the parting plane, the main extension plane of the handle housing, and / or the main extension plane of the bow handle. "Substantially perpendicular" can be understood as an orientation of a direction relative to a reference direction, wherein the direction and the reference direction, particularly viewed in a projection plane, enclose an angle of 90°, and the angle has a maximum deviation of, in particular, less than 8°, advantageously less than 5°, and particularly advantageously less than 2°.

[0015] The maximum longitudinal extent of the tool holder runs, in particular, at least substantially parallel to the maximum longitudinal extent of the handle recess and / or the tool-receiving surface. The maximum longitudinal extent of the tool holder preferably runs in the parting plane of the handle housing, the main extension plane of the handle housing, and / or in the main extension plane of the bow handle. The maximum longitudinal extent of the tool holder is defined, in particular, by a maximum longitudinal extent of the tool-receiving surface. The tool is, in particular, intended for arrangement on the tool-receiving surface.

[0016] The ratio of the maximum longitudinal extent of the handle recess of the bow handle to the maximum longitudinal extent of the tool holder is preferably at least 0.38. The ratio of the maximum longitudinal extent of the handle recess of the bow handle to the maximum longitudinal extent of the tool holder is preferably at most 0.42. The ratio of the maximum longitudinal extent of the handle recess of the bow handle to the maximum longitudinal extent of the tool holder is particularly preferably at least substantially 0.4. The maximum longitudinal extent of the handle recess is preferably at least 50 mm, preferably at least 55 mm and particularly preferably at least 60 mm. The maximum longitudinal extent of the handle recess is preferably at most 80 mm, preferably at most 70 mm and particularly preferably at most 75 mm. The maximum longitudinal extent of the handle recess is particularly preferably at least substantially 61 mm.Alternatively, it is also conceivable that the maximum longitudinal extent of the handle recess is greater than 80 mm or less than 50 mm.

[0017] The handle housing, in particular, has a palm grip, in particular a handle knob. The palm grip is preferably arranged such that the drive axis intersects the palm grip. The handle bar, in particular, merges into the palm grip. The fan housing is arranged in particular between the tool holder and the palm grip. The handle housing, in particular the palm grip, surrounds the motor housing, preferably at least in a plane perpendicular to the drive axis.

[0018] The grinding machine preferably has a battery pack interface for electrical and / or mechanical connection to a battery pack. The battery pack interface has, in particular, guide means, for example one or more guide rails or the like, for guiding the battery pack during assembly and / or disassembly at the battery pack interface. The battery pack interface, in particular the guide means, preferably specify an insertion direction for the battery pack when the battery pack is assembled at the battery pack interface. The insertion direction preferably runs at least substantially perpendicular to the drive axis, to the parting plane, to the main extension plane of the bow handle and / or to the main extension plane of the handle housing. The insertion direction runs, in particular, at least substantially parallel to the tool receiving surface.The battery pack interface is preferably arranged on the handle housing, in particular on a side of the handle bar facing away from the palm grip. The battery pack interface is, in particular, free from an interface with the drive axis and / or a main extension plane of the tool receiving surface.

[0019] The handheld power tool, in particular the grinding machine, preferably has at least one input element. The handheld power tool can preferably be switched on and / or off by actuating the input element by the operator. Alternatively or additionally, it is conceivable for a rotational speed of the handheld power tool to be adjustable by means of the input element, or the like. The input element can be designed, for example, as a button, a rotary dial, a switch, or the like. The input element is arranged, for example, on the palm grip, preferably on a side of the palm grip facing away from the battery pack interface, the tool holder, and / or the bow handle.

[0020] The grinding machine is preferably designed for one-handed operation, in particular by means of the loop handle and the palm grip. Alternatively, however, it is also conceivable for the grinding machine to be designed for two-handed operation, with one hand of the operator being positioned on the palm grip and one on the loop handle.

[0021] In one aspect of the invention, which can be considered in particular on its own as well as in conjunction with other aspects of the invention, the invention is based on a hand-held power tool device, in particular a hand-held grinding machine device, for a hand-held power tool, in particular a grinding machine, preferably the one already mentioned above, with a housing unit, in particular the one already mentioned above, which has at least one handle housing, in particular the one already mentioned above, and one drive housing, in particular the one already mentioned above, which is coupled to the handle housing.It is proposed that the drive housing has, on a surface of an upper side of the drive housing, a central web which is raised relative to the surface and above which, in particular, an end of the handle housing is arranged, wherein the central web drops down to the surface in both directions, starting from a main extension plane of the handle housing, in particular the one already mentioned above, and perpendicular to the main extension plane of the handle housing.

[0022] Advantageously, a design of the drive housing with such a central web enables a particularly space-saving design of the handheld power tool device, particularly with regard to the overall height of the handheld power tool. A particularly large gripping surface can be realized on the handle housing. Advantageously, contact between an operator's fingers and the drive housing can be effectively counteracted. The operator can be particularly effectively protected against vibrations. Advantageously, a particularly high level of operating comfort can be achieved. Particularly precise and / or safe guidance of the handheld power tool can be enabled.

[0023] The central web, in particular, stands out in a raised manner from the adjacent surface. A maximum transverse extent of the central web is preferably smaller than a maximum total transverse extent of the handle housing. The maximum transverse extent of the central web preferably runs at least substantially perpendicular to the main extension plane of the bow handle, the main extension plane of the handle housing, the parting plane, and / or the drive axis. The maximum transverse extent of the central web, in particular, runs at least substantially parallel to the tool receiving surface of the tool holder. The maximum transverse extent of the central web is preferably smaller than a maximum transverse extent of the handle housing at the end of the central web arranged above the central web. The end of the handle housing is arranged above the central web, in particular with respect to the tool holder and / or the surface.

[0024] The central web preferably has a main extension axis. A "main extension axis" of an object can be understood in particular as an axis that runs parallel to a longest edge of a smallest geometric cuboid that just completely encloses the object, and in particular runs through the center of the cuboid. The main extension axis of the central web runs in particular at least substantially perpendicular to the drive axis and / or to the maximum transverse extension of the central web. The main extension axis of the central web runs in particular at least substantially parallel to the main extension plane of the bow handle, to the main extension plane of the handle housing, to the parting plane, and / or to the tool receiving surface.Preferably, the main extension axis of the central web runs in the main extension plane of the bow handle, in the main extension plane of the handle housing and / or in the parting plane.

[0025] The central web extends, preferably at least in the direction of the main extension axis of the central web, in particular over a large part of the surface, preferably over at least 50%, preferably over at least 75%, and particularly preferably over 90% of the surface. The upper side, preferably the surface, is arranged in particular facing away from the tool holder. The central web has a curvature, preferably a curvature adapted to the surface, in particular in the longitudinal direction, preferably in the direction of the main extension axis of the central web. Alternatively, however, it is also conceivable for the central web to be designed without any curvature in the longitudinal direction.

[0026] In one aspect of the invention, which can be considered in particular on its own as well as in conjunction with other aspects of the invention, the invention is based on a handheld power tool system with a sander, in particular the one already mentioned, preferably an orbital sander or an eccentric sander, and with a battery pack for supplying energy to the sander. It is proposed that the handheld power tool system have a support unit which is designed for setting down and / or laying down the sander on a surface in at least one setting down and / or laying down position, wherein the battery pack has a support surface of the support unit for the at least one setting down and / or laying down position.

[0027] The battery pack advantageously ensures that the grinder is stable. This allows the operator to conveniently park the grinder. The battery pack allows the operator to park or set down the grinder for cleaning, maintenance, or similar tasks on the handheld power tool and / or a tool attached to the grinder. This allows for a particularly high level of operating comfort.

[0028] It is conceivable that a support point or a support line forms the support surface. It is also conceivable that the support surface comprises several support points, in particular spaced apart from one another. The support surface is preferably a continuous surface which rests on the surface, in particular in the at least one storage and / or deposit position. The surface can be, for example, a floor, a table, or the like. The battery pack in particular has a battery pack housing. The battery pack housing has the support surface.

[0029] It is conceivable that the support unit is designed for setting down and / or depositing the sander on the surface in at least one further setting down and / or depositing position. For example, the battery pack has a further support surface of the support unit for the at least one further setting down and / or depositing position. It is also conceivable that the housing unit, in particular the handle housing and / or the drive housing, has at least one additional support surface for the setting down and / or depositing position and / or for the at least one further setting down and / or depositing position.

[0030] In one aspect of the invention, which can be considered in particular on its own as well as in conjunction with other aspects of the invention, the invention is based on a protective device, in particular a wall protection ring, for collision protection of a tool, in particular the one already mentioned, that can be arranged on the hand-held power tool and / or a tool holder, in particular a sanding pad, of the hand-held power tool, with objects in a working environment of the hand-held power tool. It is proposed that the protective device comprise a diaphragm unit and / or a light guide unit for at least one light source.

[0031] Particularly efficient and / or precise illumination of a workpiece to be machined using the handheld power tool can be achieved. This design of the handheld power tool device can counteract dazzling of the operator. Advantageously, particularly high operating comfort and / or operating safety can be achieved.

[0032] The protective device is designed, in particular, as a protective ring. The protective device is preferably provided as a bumper for the handheld power tool. In particular, the protective device is intended to counteract the impact of the tool holder and / or the tool arranged on the tool holder against walls or the like in the work environment. The protective device is preferably arranged on the drive housing in at least one operating state. The protective device is preferably arranged on the fan housing.

[0033] The aperture unit is provided, in particular, for shielding an area from light incident from the at least one light source. The aperture unit comprises, for example, at least one aperture element. Alternatively, however, it is also conceivable for the aperture unit to comprise multiple aperture elements. The aperture element is preferably an opaque component. It is conceivable for the aperture element to be designed as a reflector, for example, as a mirror or the like.

[0034] The protective device preferably has a base body. It is conceivable that the diaphragm unit, in particular the at least one diaphragm element, is formed integrally with the base body. It is conceivable that the diaphragm unit, in particular the at least one diaphragm element, is formed by the base body of the protective device. Alternatively, it is also conceivable that the diaphragm unit, in particular the at least one diaphragm element, is formed separately from the base body. In particular, it is conceivable that the diaphragm unit, preferably the at least one diaphragm element, is attachable to the base body, preferably detachably. In this context, "detachable" is to be understood in particular as "non-destructively separable." It is also conceivable that the diaphragm unit, in particular the at least one diaphragm element, is adjustably arranged on the base body, preferably in order to adapt a shielding area provided by the diaphragm unit.

[0035] The light guide unit is preferably arranged on the base body and / or the aperture unit. For example, the light guide unit has at least one light guide element and preferably a plurality of light guide elements. The light guide unit is particularly intended to guide and / or emit light from the at least one light source. The at least one light guide element is designed, for example, as a transparent fiber, tube, or rod. It is also conceivable for the light guide unit to have at least one emitting element, in particular a light-scattering element, for example in the form of a roughened portion, a scattering glass, plastic, or ceramic plate, a scattering plastic film, or the like. The emitting element is preferably arranged on the base body and / or the aperture unit. It is also conceivable for the emitting element to be part of the light guide element or to form the light guide element.

[0036] The at least one light source is, for example, part of the handheld power tool, in particular the grinder. Alternatively or additionally, however, it is also conceivable for the light source to be part of the protective device. The light source is, for example, designed as an LED, an incandescent lamp, or another light source that a person skilled in the art would consider appropriate.

[0037] In one aspect of the invention, which can be considered in particular on its own as well as in conjunction with other aspects of the invention, the invention is based on a hand-held power tool device, in particular of the type already mentioned, with a housing unit, in particular of the type already mentioned, which has a handle housing, in particular of the type already mentioned, and a drive housing, in particular of the type already mentioned, for accommodating a drive unit, preferably of the type already mentioned, wherein the drive housing defines a drive axis, in particular of the type already mentioned, of the drive unit, and with a damping unit which couples the drive housing to the handle housing. It is proposed that the drive housing have an arm which extends at least radially with respect to the drive axis and on which arm at least part of the damping unit is arranged.

[0038] Advantageously, a particularly efficient decoupling of the handle housing from vibrations on the drive housing can be achieved, while simultaneously ensuring particularly precise and / or comfortable handheld power tool guidance. This allows for particularly high levels of operating comfort. Advantageously, a particularly broad support of the drive housing on the handle housing can be achieved. This advantageously enables particularly stable guidance of the handheld power tool. Particularly high levels of operating safety can be achieved.

[0039] In particular, the motor housing defines the drive axis. Preferably, the motor housing has a motor mount, in whose central longitudinal axis a motor axis is located. The drive axis is defined, in particular, by the motor axis. The central longitudinal axis is, in particular, congruent with the drive axis.

[0040] The damping unit preferably has a plurality of damping elements. The damping elements are preferably formed from at least one elastic material, in particular an elastic plastic. The damping elements can be designed as blocks, rings, ring segments, plates, or the like. The drive housing is preferably connected to the handle housing via the damping elements. The damping unit is provided, in particular, for vibration decoupling of the handle housing from the drive housing. The handle housing is preferably connected to the drive housing only via the damping unit, in particular the damping elements of the damping unit.

[0041] At least some of the damping elements can preferably be fixed between the drive housing and the handle housing via a clamp. It is also conceivable for the damping elements to have an adhesive layer for attachment to the drive housing and / or the handle housing. Additionally or alternatively, it is conceivable for at least some of the damping elements to be attachable to the handle housing and / or the drive housing by means of damping element receptacles, for example, recesses, locating bolts, or the like, and / or by means of a screw connection or the like.

[0042] The handle housing is coupled to the drive housing, in particular via two mutually different coupling regions of the damping unit. The handle housing preferably has two, in particular spaced-apart, inner regions, in each of which a part of the drive housing is arranged. The two coupling regions are arranged, in particular, in the two inner regions.

[0043] The extension arm is preferably arranged on a side of the drive housing facing the battery pack interface. The extension arm is preferably arranged within the handle housing, in particular in one of the two inner regions of the handle housing. The extension arm forms an outermost point of the drive housing, in particular viewed in a direction perpendicular to the drive axis and extending in the parting plane. The extension arm is preferably at least partially enclosed by the handle housing.

[0044] The part of the damping unit arranged on the boom has, in particular, at least one damping element of the damping elements. The boom preferably has at least one damping element receptacle for the at least one damping element. The damping element is preferably shaped to match the damping element receptacle. The damping element receptacle is designed, for example, as a receiving bolt, in particular for receiving an annular damping element. The damping element receptacle is provided, for example, for receiving the at least one damping element perpendicular to the main extension plane of the handle housing, in particular to the main extension plane of the bow handle, and / or to the parting plane. The boom is designed, for example, T-shaped, in particular for receiving at least two damping elements.Alternatively, however, it is also conceivable for the damping element receptacle to be designed as a recess, in particular for receiving a damping element configured as a block, plate, or the like. It is conceivable for the at least one damping element to be fixed to the damping element receptacle by the handle housing, in particular the handle housing shells. Alternatively or additionally, however, it is also conceivable for the damping element to be glued, screwed, or similarly bonded to the damping element receptacle.

[0045] In one aspect of the invention, which can be considered in particular independently of further aspects of the invention, it is proposed that a center of gravity of the grinding machine be arranged in the handle recess of the bow handle. Advantageously, a particularly high level of comfort can be achieved when handling the handheld power tool. Advantageously, a particularly favorable weight distribution can be achieved. Particularly favorable ergonomic properties can be realized. The center of gravity is preferably arranged within the handle recess, at least in a direction perpendicular to the main extension plane of the bow handle, in particular to the main extension plane of the handle housing.A minimum distance of the center of gravity from the parting plane of the handle housing, from the main extension plane of the handle housing, and / or from the main extension plane of the bow handle is preferably smaller than a maximum transverse extension of the handle housing, in particular of the bow handle, starting from the parting plane of the handle housing, the main extension plane of the handle housing, or the main extension plane of the bow handle. It is also conceivable for the center of gravity to be arranged in the parting plane of the handle housing, in the main extension plane of the handle housing, and / or in the main extension plane of the bow handle.The maximum transverse extent of the handle housing, in particular of the bow handle, preferably starting from the parting plane of the handle housing, the main extension plane of the handle housing, and / or the main extension plane of the bow handle, preferably runs at least substantially perpendicular to the main extension plane of the bow handle, in particular to the main extension plane of the handle housing, the parting plane, and / or to the drive axis. The maximum transverse extent of the handle housing, in particular of the bow handle, preferably starting from the parting plane of the handle housing, the main extension plane of the handle housing, and / or the main extension plane of the bow handle, preferably runs at least substantially parallel to the tool receiving surface.

[0046] Furthermore, it is proposed that the ratio of a maximum distance of the tool holder from the center of gravity in the direction of the drive axis to a minimum distance between the drive axis and the center of gravity is at least 2.8 and at most 3.5. This advantageously makes it possible to achieve a particularly favorable weight distribution with regard to handling and / or guiding the hand-held power tool. A particularly high level of operating comfort and / or particularly favorable ergonomic properties of the grinding machine can be realized. The ratio of the maximum distance of the tool holder from the center of gravity in the direction of the drive axis to the minimum distance between the drive axis and the center of gravity is preferably at least 3.0, particularly preferably at least 3.1. The ratio of the maximum distance of the tool holder from the center of gravity in the direction of the drive axis to the minimum distance between the drive axis and the center of gravity is preferably at most 3.2.The maximum distance of the tool holder from the center of gravity in the direction of the drive axis is defined in particular by a maximum distance of the tool holder surface from the center of gravity in the direction of the drive axis. The maximum distance of the tool holder from the center of gravity in the direction of the drive axis is in particular at least 30 mm, preferably at least 33 mm, more preferably at least 35 mm. The maximum distance of the tool holder from the center of gravity in the direction of the drive axis is in particular at most 50 mm, preferably at most 45 mm, and particularly preferably at most 40 mm. For example, the maximum distance of the tool holder from the center of gravity in the direction of the drive axis is at least substantially 38 mm. Alternatively, however, it is also conceivable that the maximum distance of the tool holder from the center of gravity in the direction of the drive axis is less than 30 mm or greater than 50 mm.The minimum distance of the drive axis from the center of gravity is in particular at least 8 mm, preferably at least 10 mm. The minimum distance of the drive axis from the center of gravity is in particular at most 20 mm, preferably at most 15 mm. For example, the minimum distance of the drive axis from the center of gravity is at least substantially 12 mm. Alternatively, however, it is also conceivable for the minimum distance of the drive axis from the center of gravity to be less than 8 mm or greater than 20 mm. The drive axis runs in particular at least substantially perpendicular to the tool holding surface. The drive axis runs in particular at least substantially parallel to the main extension plane of the handle housing, in particular to the main extension plane of the bow handle, and / or to the parting plane. It is conceivable for the drive axis to run in the main extension plane of the handle housing, in the main extension plane of the bow handle and / or in the parting plane.The minimum distance between the drive axis and the center of gravity runs, in particular, at least substantially perpendicular to the drive axis. The minimum distance between the drive axis and the center of gravity runs, in particular, at least substantially parallel to the tool receiving surface, to the main extension plane of the handle housing, to the main extension plane of the bow handle, and / or to the parting plane.

[0047] It is also proposed that a maximum height of the grinding machine in the direction of the drive axis has a ratio of at least 2.8 and at most 3.2 to a maximum distance, in particular the previously mentioned maximum distance, between the tool holder and the center of gravity in the direction of the drive axis. Advantageously, the center of gravity of the hand-held power tool is particularly low in relation to the maximum height of the grinding machine. Advantageously, a particularly favorable weight distribution and / or particularly favorable ergonomic properties can be achieved with regard to handling and / or guiding the hand-held power tool. A particularly high level of operating comfort can be realized. Advantageously, a particularly high level of stability of the grinding machine can be achieved.The ratio of the maximum height of the grinding machine in the direction of the drive axis to the maximum distance between the tool holder and the center of gravity in the direction of the drive axis is preferably at least 3.0. The ratio of the maximum height of the grinding machine in the direction of the drive axis to the maximum distance between the tool holder and the center of gravity in the direction of the drive axis is preferably at most 3.1. The maximum height of the grinding machine in the direction of the drive axis preferably extends from the tool holder surface parallel to the drive axis to an outermost point of the handle housing. The maximum height of the grinding machine is preferably at least 100 mm, preferably at least 110 mm. The maximum height of the grinding machine is preferably at most 130 mm, preferably at most 120 mm.Alternatively, however, it is also conceivable for the maximum height of the grinding machine in the direction of the drive axis to be less than 110 mm or greater than 130 mm. A ratio of the maximum height of the grinding machine to a maximum height of the handle recess in a direction parallel to the drive axis is preferably at least 4.0, preferably at least 4.3, particularly preferably at least 4.4, and at most 5.0, preferably at most 4.7, particularly preferably at most 4.6. The maximum height of the handle recess is preferably between 20 mm and 30 mm, preferably between 24 mm and 28 mm, and particularly preferably at least substantially 26 mm.

[0048] It is further proposed that the grip recess of the bow handle be closed, preferably essentially oval. This advantageously allows the operator's fingers to be particularly effectively protected. The handle housing can advantageously be additionally supported via the closed bow handle. This allows the handheld power tool to be particularly stable. In particular, the grip recess is closed, viewed in the main extension plane of the bow handle, in the main extension plane of the handle housing and / or in the parting plane. The grip recess is closed in particular by walls of the drive housing, in particular the fan housing of the drive housing, and of the handle housing. Alternatively, it is conceivable for the grip recess to be completely closed by walls of the handle housing.The handle recess preferably has an oval shape, particularly when viewed in a direction perpendicular to the main extension plane of the bow handle, preferably to the main extension plane of the handle housing. Alternatively, however, it is also conceivable for the handle recess to have a rectangular shape, a square shape, a circular shape, or another shape deemed appropriate by a person skilled in the art, particularly when viewed in the direction perpendicular to the main extension plane of the bow handle, preferably to the main extension plane of the handle housing.

[0049] Furthermore, it is proposed that the battery pack have a battery pack center of gravity that, when mounted on the grinder, is offset from the main extension plane of the bow handle. Advantageously, design-related shifts in the center of gravity of the grinder relative to the main extension plane of the bow handle can be compensated for. A handheld power tool system with a particularly favorable weight distribution can be provided. Advantageously, a particularly ergonomic handheld power tool system can be provided. A particularly high level of operating comfort can be achieved.A minimum distance of the battery pack's center of gravity from the parting plane of the handle housing, from the main extension plane of the handle housing, and / or from the main extension plane of the bow handle is preferably smaller than the maximum transverse extension of the handle housing, in particular of the bow handle, starting from the parting plane of the handle housing, the main extension plane of the handle housing, or the main extension plane of the bow handle. In particular, the minimum distance of the battery pack's center of gravity from the parting plane of the handle housing, from the main extension plane of the handle housing, and / or from the main extension plane of the bow handle is smaller than 20 mm, preferably smaller than 15 mm, and preferably smaller than 10 mm.

[0050] It is also proposed that the sander have a dust outlet, in particular the one already mentioned, wherein the battery pack center of gravity and the dust outlet are arranged on different sides of the main extension plane of the bow handle. Advantageously, an off-center shift in the center of gravity with respect to the main extension plane of the bow handle can be kept particularly small and compensated for in a particularly advantageous manner by the battery pack or the dust outlet. Advantageously, a sander with particularly high handling comfort can be provided. For example, the center of gravity of the sander and the battery pack center of gravity are arranged on different sides of the main extension plane of the bow handle. The dust outlet is arranged in particular on the drive housing, preferably on the fan housing.The dust outlet is arranged in particular on one side of the parting plane, the main extension plane of the bow handle and / or the main extension plane of the handle housing. The handheld power tool system preferably has a dust collection container, for example a dust box, a dust bag or the like. An overall center of gravity of the handheld power tool system relates in particular to the handheld power tool, preferably the grinder, with the battery pack and is preferably free of the dust collection container and / or the protective device. The dust collection container can preferably be fastened, in particular detachably, to the dust outlet, for example by means of a screw connection, a snap-in connection or the like. Alternatively, it is also conceivable for at least one dust outlet connecting piece of the dust collection container to be formed integrally with the dust outlet. The dust collection container is preferably rotatably mounted on the dust outlet.Alternatively, however, it is also conceivable for the dust collection container to be connected to the dust outlet in a rotationally fixed manner. The dust collection container is provided in particular for receiving dust and / or material removed, preferably extracted by means of the extraction fan. Alternatively or additionally, it is conceivable for the dust outlet to be coupled to an active extraction device, for example a vacuum cleaner, in particular in the case of a hand-held power tool that is designed without an extraction fan. It is also conceivable for the dust collection container to be compressible by contact with the surface when the hand-held power tool is parked in the parking and / or storage position, in particular to enable the hand-held power tool to be parked in the parking and / or storage position.Alternatively or additionally, it is also conceivable that the dust collection container can be displaced in the direction of the dust outlet by contact with the ground when the hand-held power tool is parked in the parking and / or storage position, in particular can be displaced relative to the dust outlet.

[0051] It is also proposed that a ratio of a minimum distance between the battery pack's center of gravity in a state arranged on the grinding machine and the drive axis of the drive unit to the maximum longitudinal extent of the tool holder is at least 0.85 and at most 1.2. Advantageously, a particularly favorable weight distribution can be achieved with regard to handling and / or guiding the hand-held power tool. A particularly high level of operating comfort can be realized. The minimum distance between the battery pack's center of gravity in a state arranged on the grinding machine and the drive axis runs in particular at least substantially parallel to the tool holder surface, the main extension plane of the bow handle, the main extension plane of the handle housing and / or the parting plane.The minimum distance between the battery pack's center of gravity when mounted on the grinding machine and the drive axle is, in particular, at least substantially perpendicular to the drive axle. For example, the minimum distance between the battery pack's center of gravity and the drive axle is at least substantially 136 mm for a battery pack with an electrical charge capacity of 4 Ah, at least substantially 148 mm for a battery pack with an electrical charge capacity of 8 Ah, and at least substantially 160 mm for a battery pack with an electrical charge capacity of 12 Ah. However, other values ​​for the minimum distance between the battery pack's center of gravity and the drive axle are also conceivable, particularly depending on the weight of the battery pack.

[0052] It is further proposed that an overall center of gravity of the handheld power tool system, in particular the one already mentioned above, be arranged in the grip recess of the bow handle. This can advantageously result in particularly high levels of comfort when handling the handheld power tool. This can advantageously result in particularly favorable weight distribution. A minimum distance of the overall center of gravity from the parting plane of the handle housing, from the main extension plane of the handle housing and / or from the main extension plane of the bow handle is preferably smaller than the maximum transverse extension of the handle housing, in particular of the bow handle, starting from the parting plane of the handle housing, the main extension plane of the handle housing and / or the main extension plane of the bow handle.The overall center of gravity is preferably arranged in the parting plane of the handle housing, in the main extension plane of the handle housing, and / or in the main extension plane of the bow handle. The overall center of gravity of the handheld power tool system, at least with a battery pack having a single-layer battery cell arrangement, is preferably arranged within the handle recess of the bow handle. The overall center of gravity of the handheld power tool system, with a battery pack having a single-layer battery cell arrangement, is preferably positioned such that the handheld power tool can be placed on the tool holder, in particular without tipping over. A minimum distance of the drive axis from the overall center of gravity has a value of at least 55 mm to at least 70 mm, in particular depending on the weight of the battery pack.The minimum distance of the drive axle from the overall center of gravity is between 65 mm and 75 mm, depending in particular on the weight of the battery pack. The maximum distance of the tool holder from the overall center of gravity in the direction of the drive axle is between 45 mm and 50 mm, depending in particular on the weight of the battery pack. The maximum distance of the tool holder from the overall center of gravity in the direction of the drive axle is between 52 mm and 55 mm, depending in particular on the weight of the battery pack.

[0053] Furthermore, it is proposed that the ratio of the minimum distance between the battery pack's center of gravity when mounted on the grinder and the drive axis of the drive unit to the maximum longitudinal extent of the handle recess of the bow handle be at least 2.0 and at most 3.0. This advantageously allows for particularly precise and / or controlled handling of the grinder. This advantageously allows for particularly safe and / or precise work with the grinder. This advantageously allows for a handheld power tool system with particularly favorable ergonomic properties.

[0054] It is also proposed that the handle housing at least partially covers the central web on both sides in directions running perpendicular to the main extension plane of the handle housing. Advantageously, a particularly large gripping surface can be provided for the operator. Contact between the operator and the drive housing when using the handheld power tool device can be counteracted. Advantageously, a particularly high level of operating comfort can be achieved. The handle housing covers the central web on both sides in the directions running perpendicular to the main extension plane of the handle housing, in particular at a height of at least 10%, preferably at least 20% and more preferably at least 30%. The central web is free from overlap by the handle housing, in particular in the longitudinal direction.It is also conceivable that the handle housing largely covers the central web on both sides in the directions perpendicular to the main extension plane of the handle housing at a height, in particular at least 50%, preferably at least 70% and preferably at least 90%.

[0055] It is also proposed that an end of the handle housing facing the central web, preferably the previously mentioned end, in particular an end surrounding the drive housing essentially in a ring-like manner, is arranged at a distance from the drive housing, in particular radially and axially spaced, preferably with respect to the drive axis. Advantageously, a particularly large gripping area can be provided for the operator. Contact of the operator with the drive housing when using the handheld power tool device can be counteracted. Advantageously, a particularly high level of operating comfort can be achieved. Preferably, the end is arranged at a distance from the surface. Preferably, the end surrounds the motor housing of the drive housing in a ring-like manner. The motor housing is arranged in particular on the central web.The motor housing is preferably arranged on a side of the central web facing away from the tool holder, in particular arranged above the central web with respect to the tool holder. The motor housing is preferably enclosed by the handle housing in a plane perpendicular to the drive axis. Preferably, the motor housing is at least substantially completely enclosed by the handle housing in the radial direction starting from the drive axis. "At least substantially completely" can be understood as at least 50%, preferably at least 75%, and particularly preferably at least 90% of a total volume and / or total mass of an object. The motor housing is preferably formed at least partially in one piece with the central web.The phrase "at least one unit or object and at least one further unit or object are at least partially formed integrally with one another" is to be understood in particular as meaning that at least one element of the unit or object is formed integrally with at least one further element of the further unit or object. "Integral" can be understood as at least materially connected, for example, by a welding process, a soldering process, an adhesive process, an injection molding process, and / or another process deemed appropriate by a person skilled in the art, and / or advantageously formed in one piece, such as by production from a single casting and / or by production using a single- or multi-component injection molding process, and advantageously from a single blank.The handle housing, in particular the end of the handle housing, is preferably arranged at a distance from the drive housing, in particular from the motor housing.

[0056] It is further proposed that the end of the handle housing facing the central web be shaped to match the drive housing, in particular the central web and / or the surface. This advantageously allows for a particularly large gripping surface for an operator while simultaneously requiring particularly little space. Preferably, the end has two recesses for the central web. It is conceivable for the end to be at a constant distance from the drive housing in the direction of the drive axis. Alternatively, however, it is also conceivable for the distance between the end and the drive housing to vary in the direction of the drive axis.

[0057] It is further proposed that the central web have a receptacle for a user interface and / or a communications module. This advantageously allows a particularly space-saving arrangement of a user interface. The functionality of the handheld power tool device can advantageously be expanded in a space-saving manner. This advantageously allows a particularly protected and / or secure positioning of a user interface. The receptacle is preferably designed as a recess in the central web. The user interface has, for example, one or more input elements. The input element of the user interface can be designed, for example, as a button, a rotary dial, a switch, or the like.For example, the handheld power tool can be switched on and / or off and / or a speed of the handheld power tool, preferably the grinder, can be adjusted or the like via the user interface, in particular via the at least one input element of the user interface. It is conceivable for the user interface to have one or more output elements, for example a display, a lighting element, in particular an LED, or the like. For example, a speed of the handheld power tool, preferably the grinder, a charge level of the battery pack, a device status of the handheld power tool, or the like can be output via the user interface, in particular via the at least one output element. Preferably, the user interface is connected for data purposes to a control unit of the handheld power tool, in particular the grinder, preferably by cable and / or wirelessly.The control unit is provided, in particular, for controlling the drive unit. The control unit comprises, in particular, at least one processor and one memory element, as well as an operating program stored on the memory element. The memory element is preferably designed as a digital storage medium, for example, as a hard drive or the like. The receptacle is preferably arranged on a side of the motor housing facing away from the bow handle. The receptacle is, in particular, arranged on a side of the handle housing facing away from the battery pack interface of the handheld power tool. The communication module is, in particular, configured to communicate with another device, for example, a smartphone, a laptop, a server, a cloud, a gateway, or the like. The communication module is preferably connected to the control unit and / or the user interface via data technology, in particular wirelessly and / or wired.It is conceivable that the communication module is part of the user interface. Alternatively, however, it is also conceivable that the communication module is designed and / or arranged separately from the user interface. For example, it is conceivable that the communication module is arranged in the handle housing, in particular in the handle bar. It is also conceivable that the communication module is part of the control unit. The communication module can comprise one or more data transmission technologies, for example, Bluetooth, NFC, or the like. The control unit is preferably arranged in the handle housing.

[0058] In one aspect of the invention, which can be considered in particular independently of further aspects of the invention, it is proposed that the drive housing has at least one air outlet opening which is at least partially covered by the handle housing, in particular at least when viewed in a main outlet direction of the air outlet opening. Advantageously, a particularly favorable exhaust air routing can be achieved. Advantageously, the operator can be protected from exhaust air in a particularly effective and / or structurally simple manner. Advantageously, a particularly high level of operating comfort can be realized. Preferably, the air outlet opening is at least partially covered by the handle housing, at least when viewed in a plane running perpendicular to the drive axis.It is conceivable for the handle housing to at least largely cover the air outlet opening, preferably to at least 50%, more preferably to at least 75%, and particularly preferably to at least 90%, in particular when viewed in a plane perpendicular to the drive axis. It is also conceivable for the handle housing to completely cover the air outlet opening, in particular when viewed in a plane perpendicular to the drive axis. The main outlet direction is determined by an arrangement and / or geometry of the air outlet opening. For example, the main outlet direction runs at least substantially perpendicular to the drive axis and / or at an angle to the drive axis, preferably inclined in the direction of the tool holder. The air outlet opening is preferably covered by the end of the handle housing, in particular when viewed in a plane perpendicular to the drive axis.Preferably, the air outlet opening is arranged above the central web, preferably with respect to the tool holder and / or the surface.

[0059] Furthermore, it is proposed that the drive housing have a motor housing, in particular the one already mentioned, which is arranged on the central web and has the air outlet opening. Advantageously, the hot engine exhaust air can be effectively dissipated while, at the same time, the operator is particularly effectively protected from the engine exhaust air. A handheld power tool device with particularly high operating comfort can be provided. Preferably, the motor housing has a plurality of air outlet openings. The air outlet openings are arranged spaced from one another, for example, in a circumferential direction, which runs in particular in a plane perpendicular to the drive axis.

[0060] It is further proposed that an opening be formed between the end of the handle housing facing the central web and the drive housing for the air to escape from the air outlet opening. Advantageously, the hot engine exhaust air can be effectively dissipated while, at the same time, the operator is particularly effectively protected from the engine exhaust air. A handheld power tool device with particularly high operating comfort can be provided. The opening is preferably arranged opposite the top side. The opening is formed in particular by the spaced arrangement of the end of the handle housing from the drive housing, preferably the motor housing.

[0061] In one aspect of the invention, which can in particular be considered independently of further aspects of the invention, it is proposed that the drive housing have a closed cable duct. This can advantageously provide effective protection for a cable connection. Advantageously, a particularly space-saving and / or protected arrangement of a cable connection can be realized. It is conceivable that at least a part, in particular a large part, preferably at least 50%, more preferably at least 70%, of the cable duct is enclosed by the handle housing, in particular viewed in a plane running perpendicular to the drive axis. An open end of the cable duct is preferably arranged on the receptacle. Another open end of the cable duct is preferably arranged in an interior region of the handle housing. The cable duct extends in particular from the receptacle into the interior region of the handle housing.The cable duct extends, for example, in particular in the direction of the drive axis, over the entire motor housing. The handheld power tool, in particular the grinding machine, and / or the handheld power tool device preferably has an electrical connection unit. The electrical connection unit has, in particular, at least one electrical connection element, for example a cable. The electrical connection unit, in particular the electrical connection element, is preferably provided to connect the user interface to the control unit, in particular at least in terms of data technology and / or control technology. The user interface can preferably be supplied with electrical energy via the electrical connection unit, preferably via the at least one electrical connection element and / or a further electrical connection element of the electrical connection unit.The electrical connection unit, in particular the at least one electrical connection element and / or the further electrical connection element, is / are arranged in the cable duct. The receptacle preferably has at least one electrical connection for the user interface and / or the communication interface. At least the electrical connection element and / or the further electrical connection element is / are connected to the connection.

[0062] It is further proposed that the drive housing has at least two housing shells, between which the cable duct is arranged. Advantageously, a cable connection can be installed particularly easily in the cable duct. Advantageously, a closed cable duct can be provided with a simple design and, in particular, with particularly high convenience when installing a cable connection. The drive housing has, in particular, a shell construction with the two housing shells as half-shells. The two housing shells of the drive housing are preferably connected to one another in a drive housing parting plane of the drive housing. The drive housing parting plane preferably runs at least substantially parallel to the parting plane of the handle housing. It is conceivable that the drive housing parting plane corresponds to the parting plane of the handle housing. Alternatively, however, it is also conceivable that the drive housing parting plane runs at an angle to the parting plane.Preferably, the cable duct runs within the outer walls of the housing shells, in particular within at least one outer wall of one of the housing shells. The cable duct preferably adjoins a contact surface of the outer walls of the two housing shells.

[0063] It is also proposed that one housing shell of the housing shells form a groove for the cable duct, and another housing shell of the housing shells form a cover for the cable duct. Advantageously, a closed cable duct can be provided in a simple design.

[0064] It is further proposed that the cable duct be arranged at least partially on, in particular in, the central web. Advantageously, a closed cable duct can be realized in a particularly space-saving manner. It is conceivable that at least part of the cable duct runs through the central web, for example, at least 5%, 10%, or 20% of the cable duct.

[0065] Furthermore, a hand-held power tool, in particular a hand-held grinder, preferably the grinder mentioned above, with the hand-held power tool device is proposed. Advantageously, a hand-held power tool with a particularly low overall height can be provided. A hand-held power tool with particularly favorable handling properties, in particular a particularly large gripping surface for the operator, can be provided.

[0066] It is also proposed that the grinding machine has a tool holder, in particular the one already mentioned above, for holding a tool, in particular the one already mentioned above, wherein the tool holder and / or the tool are / is spaced from the surface in the at least one parking and / or storage position. Advantageously, excessive loading of the tool holder and / or the tool in the at least one parking and / or storage position of the grinding machine can be counteracted. Damage to the tool holder and / or the tool, in particular caused by the surface, can be counteracted. It is possible to exchange the tool conveniently. Advantageously, a particularly high level of operating comfort can be achieved, in particular when exchanging tools and / or during maintenance work or the like on the tool holder.

[0067] It is further proposed that the grinding machine can be parked in the at least one parking and / or storage position solely via the support surface. This can advantageously counteract the formation of signs of wear caused by contact between the grinding machine, in particular the housing unit, and the surface. This can advantageously be used to park the grinding machine particularly gently. In the at least one parking and / or storage position, the grinding machine is preferably spaced apart from the surface. In particular, in the at least one parking and / or storage position, the grinding machine is connected to the surface via the battery pack, and can preferably be parked on the surface. In the at least one parking and / or storage position, in particular only the support surface on the battery pack is in contact with the surface.

[0068] Furthermore, it is proposed that a main extension plane of the support surface runs at an angle other than 90° to a main extension plane of the tool receiving surface of the tool holder of the grinding machine. Advantageously, a particularly favorable weight distribution can be achieved with regard to parking the grinding machine. Advantageously, a particularly safe parking of the grinding machine can be achieved. By inclining the tool receiving surface in this way, the tool can be particularly conveniently mounted and dismounted in the parking and / or storage position of the grinding machine. Advantageously, a particularly high level of user comfort can be achieved. In particular, a main extension axis of the hand-held power tool, in particular of the grinding machine, runs at an angle other than 90° to the main extension plane of the support surface.It is conceivable for the tool-receiving surface to extend at least substantially parallel to the main extension axis of the handheld power tool, in particular of the grinding machine. In particular, a handle axis of the handle housing extends at an angle other than 90° to the main extension plane of the support surface in the storage and / or deposit position. The handle axis is defined in particular by the bow handle. The handle axis preferably extends in the parting plane and / or in the main extension plane of the handle housing, in particular in the main extension plane of the bow handle. The handle axis corresponds in particular to a main extension axis of a handle tube of the bow handle.

[0069] It is also proposed that the main extension plane of the tool receiving surface and the main extension plane of the support surface enclose an angle greater than 80°. This advantageously enables particularly safe and space-saving parking of the grinding machine. The angle enclosed by the main extension plane of the tool receiving surface and the main extension plane of the support surface preferably has a value of less than 90° and greater than 80°. In particular, the tool holder, preferably the tool receiving surface, is inclined in the parking and / or depositing position in a direction facing away from the substrate. The angle enclosed by the main extension plane of the tool receiving surface and the main extension plane of the support surface particularly preferably has a value of at least substantially 86°.

[0070] It is further proposed that a normal to the main extension plane of the support surface intersects the battery pack and a center of gravity of the grinding machine. Advantageously, the grinding machine can be parked particularly stably. Preferably, the normal to the main extension plane of the support surface intersects a geometric center of the support surface and / or the battery pack's center of gravity, in particular at least a near area of ​​the geometric center of the support surface and / or a near area of ​​the battery pack's center of gravity. A "near area" is understood here in particular to mean an area that has a maximum distance from a reference point that is preferably less than 7%, preferably less than 5%, of a maximum longitudinal extension of the battery pack.

[0071] It is also proposed that an edge of the battery pack housing of the battery pack form the support surface. Advantageously, the grinder can be placed particularly securely on the surface. Preferably, an edge of the battery pack housing facing away from the tool holder forms the support surface. Preferably, the support surface and a support point of the grinder define a support plane for a, in particular, further, storage and / or deposit position of the support unit.

[0072] It is also proposed that a main axis of extension of the battery pack runs at least substantially perpendicular to the main axis of extension of the grinder. This advantageously allows the grinder to be placed particularly securely on the surface. Preferably, the edge of the battery pack housing runs at least substantially perpendicular to the main axis of extension of the handheld power tool.

[0073] Furthermore, it is proposed that the grinding machine has only one support point, in particular the one already mentioned, which lies in one support plane, in particular the one already mentioned, of a preferably the one already mentioned, in particular another, parking and / or setting down position of the support unit. Advantageously, wear of the grinding machine, in particular of the housing unit, due to contact with the surface can be kept particularly low, in particular while at the same time ensuring particularly high stability when the grinding machine is put down. The support point is preferably located on the handle housing or the drive housing. The support point is preferably located on a surface of the palm grip. The palm grip preferably has a round shape. The surface of the palm grip on which the support point is arranged is preferably curved.Alternatively, however, it is also conceivable for the surface of the palm grip on which the support point is arranged to be flat. The support point of the grinding machine is preferably arranged on a side of the handle housing facing away from the tool holder. Alternatively, however, it is also conceivable for at least one support elevation to be arranged on the palm grip, which lies in the support plane of the at least one, in particular further, parking and / or storage position. The at least one support elevation is intended in particular to form a support line for setting down the handheld power tool. The support elevation is designed, for example, as an elongated web whose main extension axis runs at least substantially perpendicular to the main extension axis of the handheld power tool, to the parting plane, to the main extension plane of the bow handle and / or to the main extension plane of the handle housing.Furthermore, it is also conceivable for the palm grip to have at least two support elevations, preferably viewed in a direction perpendicular to the parting plane, which are spaced apart from one another and designed as humps or the like, which preferably lie in the support plane of the at least one, in particular further, parking and / or storage position. By designing with at least one support elevation on the palm grip, it is conceivable to place the handheld power tool without the battery pack in an additional parking and / or storage position, in which the handheld power tool can be placed on the ground via the at least one support elevation on the palm grip and a further support point on the handle housing, in particular in an area of ​​the battery pack interface. Additionally or alternatively, it is also conceivable for at least one support elevation to be arranged on the handle housing, in particular in the area of ​​the battery pack interface.

[0074] It is further proposed that the support unit is designed for parking and / or laying down the grinding machine on the surface in at least one further parking and / or laying position, in particular the one already mentioned, wherein the battery pack has a further support surface of the support unit for the further parking and / or laying position. Advantageously, a particularly high level of flexibility can be achieved when parking the grinding machine safely on a surface. For example, the edge of the battery pack forms the further support surface of the support unit for the further parking and / or laying position. In the further parking and / or laying position, the tool receiving surface preferably runs at least substantially parallel to a support plane of the further parking and / or laying position.In the additional storage and / or storage position, the drive axis runs, in particular, at least substantially perpendicular to the support plane of the additional storage and / or storage position. In the additional storage and / or storage position, in particular, the additional support surface and the support point of the grinding machine lie in the support plane of the additional storage and / or storage position. In the additional storage and / or storage position, the handheld power tool system is preferably in contact with the surface via the additional support surface on the battery pack and the support point on the grinding machine.

[0075] It is further proposed that the diaphragm unit be provided to block the light output of at least one light source at least in the direction of a designated operator side. Advantageously, dazzling of an operator when working with the protective device can be counteracted. Particularly safe and / or comfortable working with the protective device can be enabled. The diaphragm unit is provided, in particular, to block the light output of the at least one light source in a direction facing away from the tool holder. The operator side corresponds, in particular, to a position of the operator with respect to the handheld power tool, in particular the light source, which the operator assumes when machining a workpiece.

[0076] In one aspect of the invention, which can in particular be considered independently of further aspects of the invention, it is proposed that the protective device has a light source unit. Advantageously, a workpiece can be illuminated particularly precisely during processing. Advantageously, the light source unit can be maintained and / or replaced particularly easily. A particularly high level of operating convenience can be achieved. The light source unit preferably has at least one light source, for example the one already mentioned, or a plurality of light sources. The light source unit, in particular the at least one light source, is preferably arranged on the base body, the diaphragm unit or the light guide unit.

[0077] In one aspect of the invention, which can be considered in particular independently of further aspects of the invention, it is proposed that the protective device has at least one energy source and / or at least one operating element for at least one light source, in particular the one already mentioned. Advantageously, the functionality of the protective device can be expanded. Such a design of the protective device enables particularly comfortable working. The energy source can be designed, for example, as a battery, as a rechargeable battery or the like. The energy source is provided in particular for supplying energy to the light source, preferably the light source unit. Preferably, the energy source is connected to the light source, in particular the light source unit, at least in one operating state.Alternatively or additionally, however, it is also conceivable for the light source, preferably the light source unit, to be supplied with electrical energy via the handheld power tool, in particular the grinding machine, for example via an electrical plug connection between the protective device and the handheld power tool. The at least one operating element of the protective device is preferably arranged on the base body. The at least one operating element of the protective device can, for example, be designed as a button, a rotary dial, a switch or the like. Via the at least one operating element of the protective device, for example, the at least one light source can be switched on and / or off and / or an illumination parameter, for example a light color, an intensity or the like, can be adjusted.

[0078] In one aspect of the invention, which can be considered in particular independently of further aspects of the invention, it is proposed that the protective device has a sensor unit for detecting operation of the handheld power tool, in particular for activating at least one, in particular the previously mentioned, light source, preferably the light source unit, during operation of the handheld power tool. Activation of the at least one light source can advantageously be automated. This advantageously enables particularly high levels of user comfort. The sensor unit is preferably arranged on the base body, on the aperture unit, or on the light guide unit. The sensor unit preferably has at least one sensor element, for example a vibration sensor or the like, for detecting operation of the handheld power tool. The sensor unit preferably has control electronics for processing the sensor signals.The control electronics are preferably connected to the at least one light source, in particular the light source unit, for control purposes. The control electronics are particularly designed to switch on the light source upon detection of operation of the handheld power tool. It is conceivable that the control electronics are part of the control unit of the handheld power tool. Alternatively, however, it is also conceivable that the control electronics are designed separately from the control unit.

[0079] In one aspect of the invention, which can be considered in particular independently of further aspects of the invention, it is proposed that the protective device be formed at least partially from a thermoplastic elastomer, in particular have a protective layer consisting at least partially of a thermoplastic elastomer. Advantageously, particularly high impact protection can be achieved. A particularly durable protective device can be provided. Preferably, the base body of the protective device is formed at least partially from a thermoplastic elastomer. Preferably, at least one surface of the protective device, in particular of the base body, facing away from the handheld power tool is formed from a thermoplastic elastomer. The protective layer can be a sleeve slipped over the base body, a layer adhesively bonded to the base body, or the like.Alternatively or additionally, it is also conceivable for the protective layer to be clamped, screwed, or similarly attached to the base body. Furthermore, it is also conceivable for the base body to be overmolded with the protective layer, in particular for the protective layer to be overmolded onto the base body, for example, using a two-component injection molding process.

[0080] In one aspect of the invention, which can be considered in particular independently of further aspects of the invention, it is proposed that the protective device has a fastening unit for releasably fastening to the handheld power tool with at least two fixing rails running parallel to one another, which have at least two locking recesses. Advantageously, a robust fastening of the protective device to the handheld power tool can be realized in a structurally simple manner. The handheld power tool, in particular the drive housing, preferably the fan housing, has in particular a protective fastening unit corresponding to the fastening unit. The protective fastening unit has, for example, at least one fixing rail.The fixing rail of the protective fastening unit is arranged between the fixing rails of the fastening unit, particularly when the protective device, in particular the base body, is arranged on the handheld power tool. The fixing rails of the fastening unit and the fixing rail of the protective fastening unit are preferably provided for fixing relative to one another in an axial direction, preferably with respect to the drive axis. The protective fastening unit preferably has two locking elements, in particular locking hooks or the like. The locking elements are particularly provided for interacting with the locking recesses of the fastening unit to fasten the protective device, in particular the base body, to the handheld power tool. Alternatively, it is also conceivable for the configuration of the fastening unit and the protective fastening unit to be interchanged.

[0081] In one aspect of the invention, which can be considered independently of other aspects of the invention, it is proposed that the protective device have an asymmetrical basic shape, particularly adapted to a dust outlet of the handheld power tool, in particular the aforementioned one. In particular, the shape of the base body deviates from a circular shape in at least one section along its longitudinal extent, preferably in a region of the dust outlet.

[0082] Furthermore, a handheld power tool system, in particular the one already mentioned, comprising a handheld power tool and the protective device is proposed. Particularly efficient and / or precise illumination of a workpiece to be machined using the handheld power tool can be achieved. Such a design of the protective device can counteract dazzling of the operator. Advantageously, particularly high operating comfort and / or particularly high operating safety can be achieved.

[0083] Furthermore, the invention is based on a method for producing a protective device, in particular the one already mentioned. It is proposed that the protective device be made at least partially from a thermoplastic elastomer. This advantageously provides a particularly durable protective device. This advantageously provides particularly efficient impact protection. The base body is preferably made at least partially from a thermoplastic elastomer, for example, using a single-component or multi-component injection molding process.

[0084] It is further proposed that the hand-held power tool device has a tool holder, in particular the one already mentioned above, for receiving a tool, in particular the one already mentioned above, in particular an abrasive, wherein a maximum distance of the boom to the drive axis is greater than a maximum distance of the tool holder to the drive axis, in particular viewed in the parting plane of the handle housing.

[0085] Advantageously, a particularly broad support of the drive housing on the handle housing can be achieved. Advantageously, a particularly high level of stability can be achieved when guiding the handheld power tool, in particular the handheld power tool device. Advantageously, particularly precise working with the handheld power tool device can be enabled. Preferably, a maximum distance of the part of the damping unit on the boom from the drive axis is greater than the maximum distance of the tool holder from the drive axis, in particular viewed in the parting plane of the handle housing.

[0086] It is further proposed that a ratio of a maximum transverse extent of the part of the damping unit to a minimum distance of the part of the damping unit from the handle axis of the handle housing is at least 0.9 and at most 1.05. Torques about the handle axis can advantageously be supported particularly effectively. Particularly high stability can advantageously be achieved. Particularly precise working with the handheld power tool device can be realized. The maximum transverse extent of the part of the damping unit runs in particular at least substantially perpendicular to the main extension plane of the handle housing, preferably the main extension plane of the bow handle, and / or the parting plane. The maximum transverse extent of the part of the damping unit preferably runs at least substantially parallel to the tool receiving surface.The minimum distance of the damping unit part from the handle axis is preferably measured parallel to the parting plane, in particular to the main extension plane of the bow handle, preferably the main extension plane of the handle housing. The maximum transverse extension of the damping unit part is preferably at least 40 mm, preferably at least 45 mm. The maximum transverse extension of the damping unit part is preferably at most 60 mm, preferably at most 50 mm. The ratio of the maximum transverse extension of the damping unit part to the maximum height of the grinding machine is preferably at least 0.35, preferably at least 0.4.

[0087] The ratio of the maximum transverse extent of the damping unit part to the maximum height of the grinding machine is preferably at most 0.5, more preferably at most 0.45. The minimum distance of the damping unit part from the handle axis is preferably at least 45 mm, more preferably at least 50 mm. The minimum distance of the damping unit part from the handle axis is preferably at most 60 mm, more preferably at most 55 mm. Alternatively, however, it is also conceivable that the minimum distance of the damping unit part from the handle axis is less than 45 mm or greater than 60 mm.

[0088] It is also proposed that a ratio of the maximum transverse extent of the part of the damping unit to a minimum distance of the part of the damping unit from the drive axis is at least 0.7, preferably at least 0.73 and at most 0.8, preferably at most 0.77. Tilting forces can advantageously be supported particularly effectively. A particularly stable handheld power tool device can be provided. The minimum distance of the part of the damping unit from the drive axis is preferably measured parallel to the parting plane, in particular to the main extension plane of the bow handle, preferably the main extension plane of the handle housing. The minimum distance of the part of the damping unit from the drive axis is preferably at least 55 mm, preferably at least 60 mm. The minimum distance of the part of the damping unit from the drive axis is preferably at most 70 mm, preferably at most 65 mm.Alternatively, however, it is also conceivable that the minimum distance of the part of the damping unit to the drive axle is less than 55 mm or greater than 70 mm.

[0089] Furthermore, it is proposed that a ratio of a maximum height of the housing unit to the minimum distance of the part of the damping unit on the boom from the handle axis of the handle housing is a maximum of 2.25. A particularly wide support of the drive housing on the handle housing can be realized. Advantageously, a particularly high level of stability can be achieved when handling the hand-held power tool, in particular the grinding machine. The maximum height of the housing unit preferably runs in the parting plane, in particular in the main extension plane of the handle housing, preferably in the main extension plane of the bow handle. The maximum height of the housing unit runs in particular parallel to the drive axis. The maximum height of the housing unit is preferably at least 90 mm, preferably at least 100 mm. The maximum height of the housing unit is preferably a maximum of 120 mm, preferably a maximum of 110 mm.Alternatively, however, it is also conceivable that the maximum height of the housing unit in the direction of the drive axis is less than 90 mm or greater than 120 mm. A ratio of a maximum extension of the damping unit, in particular a maximum distance between the damping elements, in the direction of the drive axis to the maximum height of the housing unit is preferably at least 0.8, preferably at least 0.85. A ratio of the maximum extension of the damping unit, in particular a maximum distance between the damping elements, in the direction of the drive axis to the maximum height of the grinding machine is preferably at least 0.7, preferably at least 0.75. The maximum extension of the damping unit, in particular the maximum distance between the damping elements, in the direction of the drive axis is preferably at least 85 mm, preferably at least 90 mm.Alternatively, however, it is also conceivable that the maximum extension of the damping unit, in particular the maximum distance between the damping elements, in the direction of the drive axis is less than 85 mm.

[0090] It is also proposed that a ratio of the minimum distance of the part of the damping unit from the drive axis in a direction perpendicular to the drive axis to a maximum longitudinal extent of the housing unit is greater than 0.3. A particularly wide support of the drive housing on the handle housing can be realized. Advantageously, a particularly high level of stability can be achieved when handling the hand-held power tool, in particular the grinding machine. The maximum longitudinal extent of the housing unit preferably runs perpendicular to the drive axis. The maximum longitudinal extent of the housing unit preferably runs at least substantially parallel to the tool receiving surface. The maximum longitudinal extent of the housing unit runs in particular in the parting plane, preferably in the main extension plane of the handle housing, in particular in the main extension plane of the bow handle.The maximum longitudinal extent of the housing unit is preferably at least 175 mm, preferably at least 180 mm. The maximum longitudinal extent of the housing unit is preferably at most 190 mm, preferably at most 185 mm. Alternatively, however, it is also conceivable for the maximum longitudinal extent of the housing unit to be less than 175 mm or greater than 190 mm.

[0091] It is further proposed that the ratio of the minimum distance between the part of the damping unit and the drive axis to the minimum distance between the part of the damping unit and the handle axis of the handle housing be at least 1.2 and at most 1.3. A handheld power tool device with a particularly favorable support of the drive housing on the handle housing can be provided.

[0092] It is further proposed that the handle housing have a bow handle, in particular the one already mentioned, which is supported on the drive housing via the part of the damping unit and / or the extension arm to form the closed handle recess of the bow handle. Advantageously, a particularly effective support of the drive housing on the handle housing can be achieved while simultaneously decoupling the handle housing from vibrations. This allows for particularly high handling stability and, at the same time, particularly high operating comfort.

[0093] It is also proposed that the part of the damping unit and / or the extension arm be arranged in the direction of the handle axis at the level of the handle recess. This allows for particularly broad support of the drive housing on the handle housing. Advantageously, a handheld power tool device with particularly high stability and, at the same time, particularly effective vibration decoupling can be provided. Preferably, the part of the damping unit on the extension arm and / or the extension arm, viewed in the direction of the handle axis, is arranged at least substantially entirely within the maximum longitudinal extent of the handle recess.

[0094] Furthermore, it is proposed that the part of the damping unit arranged on the boom has at least two damping elements arranged at a distance from one another. Advantageously, a particularly favorable ratio can be achieved between stable support of the drive housing on the handle housing and vibration decoupling of the handle housing from the drive housing. The damping elements are preferably arranged on opposite sides of the boom. The damping elements are preferably arranged on different sides of the parting plane, in particular the main extension plane of the handle housing, preferably the main extension plane of the bow handle. The damping elements are preferably arranged mirror-symmetrically with respect to the parting plane, in particular the main extension plane of the handle housing, preferably the main extension plane of the bow handle.The boom preferably has two damping element receptacles for the two damping elements or the previously mentioned damping element receptacle is designed to receive the two damping elements.

[0095] It is also proposed that the housing unit has a fan housing, in particular the one already mentioned above, for accommodating a suction fan, in particular the one already mentioned above, wherein the boom is arranged on the fan housing. Advantageously, a particularly wide support for the drive housing can be realized. This makes it possible to achieve particularly stable guidance of the hand-held power tool, in particular of the hand-held power tool device, with simultaneous vibration decoupling of the drive housing from the handle housing. The suction fan is in particular part of the hand-held power tool, preferably the grinding machine. Alternatively, it is also conceivable for the hand-held power tool, in particular the grinding machine, to be designed without a suction fan. Preferably, the boom is at least partially designed in one piece with the fan housing.The extension arm is arranged, in particular, on a side of the fan housing facing the battery pack interface. It is conceivable that, in a handheld power tool designed as an orbital sander, which, for example, has a rectangular tool holder, the extension arm is preferably arranged between two oscillating legs of the tool holder. The oscillating legs are made, in particular, of an elastic material, preferably of a plastic. The oscillating legs are preferably connected to the drive housing, in particular to the fan housing.

[0096] In one aspect of the invention, which can be considered in particular independently of further aspects of the invention, it is proposed that the drive housing have a motor housing, in particular the one already mentioned above, for receiving the drive unit and a fan housing, in particular the one already mentioned above, for receiving an extraction fan, in particular the one already mentioned above, wherein the motor housing and the fan housing are at least partially formed integrally with one another. Advantageously, a tolerance chain can be kept particularly small. A particularly high level of stability of the drive housing can be achieved. The fan housing and the motor housing have common housing shells, in particular the housing shells already mentioned above, of the drive housing. The two housing shells each have one half of the fan housing and the motor housing.

[0097] In one aspect of the invention, which can be considered in particular independently of further aspects of the invention, it is proposed that the drive housing has a motor housing, in particular the one already mentioned, on which at least one damping element of the damping unit is arranged such that the damping element is only partially enclosed by the handle housing when viewed in a sectional plane through the damping element perpendicular to the drive axis. Advantageously, the handle housing can be supported on the drive housing at a point on the handle housing that is particularly far out in the axial direction, in particular with respect to the drive axis. This can provide particularly efficient support with simultaneous vibration decoupling. Particularly high stability can be achieved when handling the handheld power tool, in particular the grinding machine.Preferably, the cutting plane through the damping element only intersects a part of the end of the handle housing facing the central web, in particular due to the two recesses in the end for the central web.

[0098] In one aspect of the invention, which can be considered in particular independently of further aspects of the invention, it is proposed that the damping unit has at least one sealing element, in particular a sealing ring, to block an inlet of exhaust air into the housing unit, in particular into the handle housing, wherein the sealing element, in particular the sealing ring, is arranged between the handle housing and the drive housing. Advantageously, an inflow of warm engine air into the handle housing can be counteracted. Overheating of the hand-held power tool, in particular the grinding machine, can be counteracted. It is conceivable that the sealing element is arranged, in particular designed, as a closed sealing ring.The sealing element surrounds the motor housing in a circumferential direction, which runs in particular in a plane perpendicular to the drive axis, preferably at least substantially completely, in particular in an angular range of at least 270°, preferably of at least 330°, preferably of at least 350° and particularly preferably completely. The sealing element preferably fills a gap between the motor housing and the handle housing at least substantially completely. The sealing element is preferably formed from an elastic material, preferably from an elastic plastic. The sealing element preferably has a different material hardness than the damping elements. The material hardness of the sealing element is preferably lower than a material hardness of the damping elements. Alternatively, it is conceivable for the sealing element and the damping elements to have an identical material hardness.The sealing element is arranged in particular above the at least one air outlet with respect to the tool holder.

[0099] The handheld power tool, in particular the grinding machine, the handheld power tool system, the protective device, the method, and / or the handheld power tool device should not be limited to the application and embodiment described above. In particular, the handheld power tool, in particular the grinding machine, the handheld power tool system, the method, and / or the handheld power tool device can have a number of individual elements, components, units, and method steps that differs from the number stated herein in order to fulfill a functionality described herein. Furthermore, in the value ranges specified in this disclosure, values ​​within the stated limits are also to be considered disclosed and can be used arbitrarily. drawing

[0100] Further advantages will become apparent from the following description of the drawings. The drawings illustrate two exemplary embodiments of the invention. The drawings, the description, and the claims contain numerous features in combination. Those skilled in the art will also expediently consider the features individually and combine them into useful further combinations.

[0101] They show: Fig. 1 shows a hand-held power tool system with a hand-held power tool in a side view, Fig. 2 shows a top view of the hand-held power tool system, Fig. 3 shows a front view of the hand-held power tool system, Fig. 4 shows a side view of the hand-held power tool system with a handle housing shell, Fig. 5 shows a cross-sectional view of the hand-held power tool system in a parting plane of a handle housing of the hand-held power tool, Fig. 6 shows a top view of the hand-held power tool in a cross-sectional view, Fig. 7 shows the hand-held power tool system in a storage and / or placement position on a base, Fig. 8 shows the hand-held power tool system in a further storage and / or placement position on the base, Fig. 9a shows a main body of a protective device of the hand-held power tool system in a perspective view, Fig. 9b shows a top view of the main body of the protective device, Fig.Fig. 10a shows a detail of a drive housing of the handheld power tool in a perspective view, Fig. 10b shows the drive housing in a plan view, Fig. 11 shows a schematic sequence of a method for producing a handheld power tool device for the handheld power tool, and Fig. 12 shows a handheld power tool system with a handheld power tool in an alternative embodiment. Description of the embodiments

[0102] Figure 1shows a handheld power tool system 36a with a handheld power tool 50a, in particular a handheld sander. The handheld power tool 50a is designed as a sander 10a, in particular as a cordless sander. Alternatively, however, it is also conceivable for the handheld power tool 50a, in particular the sander 10a, to be designed as a mains-operated handheld power tool. The sander 10a is designed as an eccentric sander. Alternatively, however, it is also conceivable for the sander 10a to be designed as an orbital sander, a delta sander, a flower sander, or the like.

[0103] The handheld power tool 50a has a tool holder 12a for holding a tool 178a. The tool holder 12a is designed as a sanding pad. The tool holder 12a is designed as a round sanding pad. Alternatively, however, it is also conceivable for the tool holder 12a to be designed as a delta pad, as a square, preferably rectangular, sanding pad, or as another sanding pad that a person skilled in the art would consider appropriate.

[0104] The tool holder 12a has fastening means for securing the tool 178a. The tool holder 12a preferably has a hook-and-loop surface 180a for securing the tool 178a. Alternatively or additionally, it is conceivable for the fastening means to comprise several hook-and-loop surfaces, one or more clamps, a combination of these, or other fastening means deemed appropriate by a person skilled in the art. The tool 178a is designed as an abrasive, for example, as sandpaper, a sanding fleece, a sanding mesh, or the like.

[0105] The handheld power tool 50a has a drive unit 14a for driving the tool holder 12a. The drive unit 14a has a drive element 182a, preferably an eccentric (see Figure 5). The drive element 182a is provided for driving about a drive axis 30a of the drive unit 14a. The handheld power tool 50a has an output unit 66a. The tool holder 12a is part of the output unit 66a. The output unit 66a has a connecting piece 90a. The connecting piece 90a is arranged, preferably fastened, to the drive element 182a. The tool holder 12a is fastened to the connecting piece 90a, in particular in a rotationally fixed manner, for example by means of a screw 184a or the like.

[0106] The output unit 66a has an output axis 186a. The output axis 186a preferably runs at least substantially parallel to the drive axis 30a. The drive axis 30a is spaced apart from the output axis 186a. The connecting piece 90a and / or the tool holder 12a, in particular the output axis 186a, moves around the drive axis 30a, preferably in a circular motion, in at least one operating state. The drive element 182a is provided to drive the connecting piece 90a and / or the tool holder 12a, in particular the output axis 186a, in a preferably circular motion around the drive axis 30a of the drive element 182a.

[0107] The connecting piece 90a is rotatably mounted on the drive element 182a, in particular rotatable about the output axis 186a. The handheld power tool 50a has at least one bearing element 188a. The connecting piece 90a is mounted on the drive element 182a via the bearing element 188a, in particular rotatable about the output axis 186a. The bearing element 188a is preferably arranged between the drive element 182a and the connecting piece 90a. The bearing element 188a can be designed as a radial bearing, in particular as a rolling bearing, for example as a ball bearing, or as a plain bearing.

[0108] The drive unit 14a is provided for driving the output unit 66a, in particular the tool holder 12a. The drive unit 14a has an electric motor 190a, in particular for driving the drive element 182a.

[0109] The handheld power tool 50a, in particular the grinding machine 10a, has at least one further bearing element 300a. The drive element 182a is rotatably mounted on a drive housing 54a of the handheld power tool 50a via the further bearing element 300a, in particular rotatable about the drive axis 30a. The further bearing element 300a can be designed as a radial bearing, in particular as a rolling bearing, for example as a ball bearing, or as a plain bearing.

[0110] The handheld power tool 50, in particular the grinding machine 10a, has a housing unit 16a. The housing unit 16a has a drive housing 54a for accommodating the drive unit 14a. The drive housing 54a is designed as a plastic housing. Alternatively, however, it is also conceivable for the drive housing 54a to be at least partially designed as a metal housing, for example, as an aluminum housing or the like.

[0111] The housing unit 16a has a handle housing 52a. The handle housing 52a is designed as a plastic housing. Alternatively, however, it is also conceivable for the handle housing 52a to be designed at least partially as a metal housing, for example as an aluminum housing or the like. The handle housing 52a has two handle housing shells 192a, 194a, which are connected to one another in particular at a parting plane 146a of the handle housing 52a. The handle housing 52a is designed separately from the drive housing 54a, in particular arranged at a distance from the drive housing 54a. The handle housing 52a has, in particular, a shell construction with the two handle housing shells 192a, 194a as half shells.

[0112] The housing unit 16a has a bow handle 18a. The bow handle 18a is part of the handle housing 52a. The bow handle 18a has a finger grip surface 196a. The bow handle 18a has two walls 198a, in particular side walls, which delimit the finger grip surface 196a, in particular in a main extension plane 42a of the bow handle 18a and in a direction perpendicular to the drive axis 30a. The bow handle 18a is designed as a closed bow handle. Alternatively, however, it is also conceivable for the bow handle 18a to be designed as an open bow handle. The walls 198a define, in particular delimit, a handle recess 20a of the bow handle 18a, at least partially.

[0113] A maximum longitudinal extent 22a of the handle recess 20a runs at least substantially parallel to a tool receiving surface 102a of the tool holder 12a. The maximum longitudinal extent 22a of the handle recess 20a runs in a main extension plane 64a of the handle housing 52a, preferably in the main extension plane 42a of the bow handle 18a, in particular in the parting plane 146a of the handle housing 52a. The tool receiving surface 102a runs at least substantially perpendicular to the parting plane 146a, the main extension plane 64a of the handle housing 52a and / or the main extension plane 42a of the bow handle 18a.

[0114] The main extension plane 42a of the bow handle 18a is congruent here with the main extension plane 64a of the handle housing 52a. Alternatively, it is conceivable that the main extension plane 42a of the bow handle 18a is different from the main extension plane 64a of the handle housing 52a. The parting plane 146a is congruent here with the main extension plane 64a of the handle housing 52a, in particular the main extension plane 42a of the bow handle 18a. Alternatively, however, it is also conceivable that the main extension plane 42a of the bow handle 18a and / or the main extension plane 64a of the handle housing 52a are / is different from the parting plane 146a.

[0115] A ratio of the maximum longitudinal extent 22a of the grip recess 20a of the bow handle 18a to a maximum longitudinal extent 24a of the tool holder 12a is at least 0.35, preferably at least 0.38. The ratio of the maximum longitudinal extent 22a of the grip recess 20a of the bow handle 18a to a maximum longitudinal extent 24a of the tool holder 12a is at most 0.5, preferably at most 0.45, and more preferably at most 0.42. Particularly preferably, the ratio of the maximum longitudinal extent 22a of the grip recess 20a of the bow handle 18a to the maximum longitudinal extent 24a of the tool holder 12a is at least substantially 0.4.

[0116] The maximum longitudinal extent 22a of the handle recess 20a is at least 50 mm, preferably at least 55 mm, and particularly preferably at least 60 mm. The maximum longitudinal extent 22a of the handle recess 20a is at most 80 mm, preferably at most 70 mm, and particularly preferably at most 75 mm. The maximum longitudinal extent 22a of the handle recess 20a is, for example, at least substantially 61 mm. Alternatively, however, it is also conceivable that the maximum longitudinal extent 22a of the handle recess 20a is greater than 80 mm or less than 50 mm.

[0117] The maximum longitudinal extent 24a of the tool holder 12a corresponds in particular to a maximum diameter of the tool holder surface 102a. The maximum longitudinal extent 24a is, for example, 150 mm, in particular between 148 mm and 152 mm. Alternatively, however, it is also conceivable that the maximum longitudinal extent 24a of the tool holder 12a, in particular the maximum diameter of the tool holder surface 102a, is greater than 150 mm, in particular greater than 152 mm, or less than 150 mm, in particular less than 148 mm.

[0118] A maximum diameter of the tool 178a is greater than the maximum longitudinal extent 24a of the tool holder 12a. Alternatively, however, it is also conceivable that the maximum diameter of the tool 178a is equal to or smaller than the maximum longitudinal extent 24a of the tool holder 12a.

[0119] The maximum longitudinal extent 24a of the tool holder 12a runs at least substantially parallel to the maximum longitudinal extent 22a of the handle recess 20a and / or the tool receiving surface 102a. The maximum longitudinal extent 24a of the tool holder 12a runs in the parting plane 146a of the handle housing 52a, the main extension plane 64a of the handle housing 52a, and / or in the main extension plane 42a of the bow handle 18a. The maximum longitudinal extent 24a of the tool holder 12a is defined by a maximum longitudinal extent of the tool receiving surface 102a. The tool 178a is intended for arrangement on the tool receiving surface 102a. The hook-and-loop surface 180a corresponds to the tool receiving surface 102a.

[0120] The handle housing 52a has a palm grip 160a, in particular a handle knob. The palm grip 160a is arranged such that the drive shaft 30a intersects the palm grip 160a. The handle bar 18a, in particular, merges into the palm grip 160a, preferably adjacent to the palm grip 160a.

[0121] The handheld power tool 50a has an extraction fan 168a. The extraction fan 168a is designed to extract material removed from the workpiece during machining and, in particular, to blow it out of a dust outlet 44a.

[0122] A fan housing 166a of the housing unit 16a, in particular of the drive housing 54a, for accommodating the extraction fan 168a is arranged between the tool holder 12a and the palm grip 160a. The handle housing 52a, in particular the palm grip 160a, surrounds a motor housing 78a of the drive housing 54a, preferably at least in a plane perpendicular to the drive axis 30a.

[0123] The grinding machine 10a has a battery pack interface 218a for electrical and / or mechanical connection to a battery pack 38a. The battery pack interface 218a has guide means, for example one or more guide rails or the like, for guiding the battery pack 38a during assembly and / or disassembly of the battery pack 38a to and / or from the battery pack interface 218a. The battery pack interface 218a, in particular the guide means, specifies / specifies an insertion direction for the battery pack 38a during assembly of the battery pack 38a to the battery pack interface 218a. The insertion direction preferably runs at least substantially perpendicular to the drive axis 30a, to the parting plane 146a, to the main extension plane 42a of the bow handle 18a, and / or to the main extension plane 64a of the handle housing 52a. The insertion direction runs at least substantially parallel to the tool receiving surface 102a.

[0124] The battery pack interface 218a is arranged on the handle housing 52a, in particular on a side of the handle bar 18a facing away from the palm grip 160a. The battery pack interface 218a is free of an interface with the drive axis 30a and / or with a main extension plane 232a of the tool receiving surface 102a.

[0125] The handheld power tool 50a has at least one input element 162a. The handheld power tool 50a can be switched on and / or off by actuating the input element 162a by the operator. Alternatively or additionally, it is conceivable that a rotational speed of the handheld power tool 50a or the like can be adjusted using the input element 162a. The input element 162a can be designed, for example, as a button, a rotary dial, a switch, or the like. The input element 162a is arranged on the palm grip 160a, preferably on a side of the palm grip 160a facing away from the battery pack interface 218a, the tool holder 12a, and / or the bow handle 18a.

[0126] The grinding machine 10a is designed for one-handed operation, in particular by means of the loop handle 18a and the palm grip 160a. Alternatively, however, it is also conceivable for the grinding machine 10a to be designed for two-handed operation, with one hand of the operator being arranged on the palm grip 160a and one on the loop handle 18a.

[0127] A center of gravity 26a of the handheld power tool 50a is arranged in the handle recess 20a. The center of gravity 26a is arranged within the handle recess 20a, at least in a direction perpendicular to the main extension plane 42a of the bow handle 18a, in particular to the main extension plane 64a of the handle housing 52a.

[0128] A minimum distance (not shown here) of the center of gravity 26a from the parting plane 146a of the handle housing 52a, from the main extension plane 64a of the handle housing 52a and / or from the main extension plane 42a of the bow handle 18a is smaller than a maximum transverse extension 200a of the handle housing 52a starting from the parting plane 146a of the handle housing 52a, the main extension plane 64a of the handle housing 52a or the main extension plane 42a of the bow handle 18a. It is also conceivable that the center of gravity 26a is arranged in the parting plane 146a of the handle housing 52a, in the main extension plane 64a of the handle housing 52a and / or in the main extension plane 42a of the bow handle 18a.

[0129] The maximum transverse extent 200a of the handle housing 52a, in particular of the bow handle 18a, in particular starting from the parting plane 146a of the handle housing 52a, the main extension plane 64a of the handle housing 52a and / or the main extension plane 42a of the bow handle 18a, runs at least substantially perpendicular to the main extension plane 42a of the bow handle 18a, in particular to the main extension plane 64a of the handle housing 52a, to the parting plane 146a and / or to the drive axis 30a. The maximum transverse extent 200a of the handle housing 52a, in particular of the bow handle 18a, in particular starting from the parting plane 146a of the handle housing 52a, the main extension plane 64a of the handle housing 52a and / or the main extension plane 42a of the bow handle 18a, runs at least substantially parallel to the tool receiving surface 102a.

[0130] A ratio of a maximum distance 28a of the tool holder 12a from the center of gravity 26a in the direction of the drive axis 30a of the drive unit 14a to a minimum distance 32a between the drive axis 30a and the center of gravity 26a is at least 2.8, preferably at least 3.0, preferably at least 3.1. The ratio of a maximum distance 28a of the tool holder 12a from the center of gravity 26a in the direction of the drive axis 30a of the drive unit 14a to a minimum distance 32a between the drive axis 30a and the center of gravity 26a is at most 3.5, preferably at most 3.2.

[0131] The maximum distance 28a of the tool holder 12a from the center of gravity 26a in the direction of the drive axis 30a is at least 30 mm, preferably at least 33 mm, more preferably at least 35 mm. The maximum distance 28a of the tool holder 12a from the center of gravity 26a in the direction of the drive axis 30a is in particular at most 50 mm, preferably at most 45 mm, and particularly preferably at most 40 mm. For example, the maximum distance 28a of the tool holder 12a from the center of gravity 26a in the direction of the drive axis 30a is at least substantially 38 mm here. Alternatively, however, it is also conceivable that the maximum distance 28a of the tool holder 12a from the center of gravity 26a in the direction of the drive axis 30a is less than 30 mm or greater than 50 mm.

[0132] The minimum distance 32a of the drive axle 30a from the center of gravity 26a is in particular at least 8 mm, preferably at least 10 mm. The minimum distance 32a of the drive axle 30a from the center of gravity 26a is in particular at most 20 mm, preferably at most 15 mm. For example, the minimum distance 32a of the drive axle 30a from the center of gravity 26a is at least substantially 38 mm. Alternatively, however, it is also conceivable that the minimum distance 32a of the drive axle 30a from the center of gravity 26a is less than 8 mm or greater than 20 mm.

[0133] The maximum distance 28a of the tool holder 12a to the center of gravity 26a in the direction of the drive axis 30a is defined by a distance of the tool holder surface 102a to the center of gravity 26a in the direction of the drive axis 30a.

[0134] The drive axis 30a extends at least substantially perpendicular to the tool receiving surface 102a. The drive axis 30a extends at least substantially parallel to the main extension plane 64a of the handle housing 52a, in particular to the main extension plane 42a of the bow handle 18a, and / or to the parting plane 146a. The drive axis 30a extends in the main extension plane 64a of the handle housing 52a, in the main extension plane 42a of the bow handle 18a, and / or in the parting plane 146a.

[0135] The minimum distance 32a between the drive axis 30a and the center of gravity 26a runs at least substantially perpendicular to the drive axis 30a. The minimum distance 32a between the drive axis 30a and the center of gravity 26a runs at least substantially parallel to the tool receiving surface 102a, to the main extension plane 64a of the handle housing 52a, the main extension plane 42a of the bow handle 18a and / or the parting plane 146a.

[0136] A maximum height 34a of the handheld power tool 50a, in particular of the grinding machine 10a, has a ratio of at least 2.8, preferably at least 3.0, in the direction of the drive axis 30a to the maximum distance 28a between the tool holder 12a and the center of gravity 26a in the direction of the drive axis 30a. The ratio of the maximum height 34a of the grinding machine 10a in the direction of the drive axis 30a to the maximum distance 28a between the tool holder 12a and the center of gravity 26a in the direction of the drive axis 30a is at most 3.2, preferably at most 3.1.

[0137] The maximum height 34a of the grinding machine 10a is, for example, at least 100 mm, preferably at least 110 mm. The maximum height 34a of the grinding machine 10a is, for example, a maximum of 130 mm, preferably a maximum of 120 mm. Alternatively, however, it is also conceivable that the maximum height 34a of the grinding machine 10a in the direction of the drive axis 30a is less than 110 mm or greater than 130 mm. The maximum height 34a of the grinding machine 10a in the direction of the drive axis 30a extends from the tool receiving surface 102a parallel to the drive axis 30a to an outermost point of the handle housing 52a.

[0138] A ratio of the maximum height 34a of the grinding machine 10a to a maximum height 202a of the handle recess 20a in a direction parallel to the drive axis 30a is at least 4.0, preferably at least 4.3, particularly preferably at least 4.4. The ratio of the maximum height 34a of the grinding machine 10a to the maximum height 202a of the handle recess 20a in a direction parallel to the drive axis 30a is at most 5.0, preferably at most 4.7, particularly preferably at most 4.6. The maximum height 34a of the handle recess 20a here is, for example, between 20 mm and 30 mm, preferably between 24 mm and 28 mm, and particularly preferably at least substantially 26 mm.

[0139] The handle recess 20a is closed, preferably essentially oval. The handle recess 20a is closed, viewed in the main extension plane 42a of the bow handle 18a, in the main extension plane 64a of the handle housing 52a and / or in the parting plane 146a. The handle recess 20a is closed by walls of the drive housing 54a, in particular the fan housing 166a of the drive housing 54a, and the handle housing 52a. Alternatively, it is conceivable that the handle recess 20a is completely closed by walls of the handle housing 52a.

[0140] The handle recess 20a has an oval shape, particularly when viewed in a direction perpendicular to the main extension plane 42a of the bow handle 18a, preferably to the main extension plane 64a of the handle housing 52a. Alternatively, however, it is also conceivable for the handle recess 20a to have a rectangular shape, a square shape, a circular shape, or another shape that would be considered appropriate by a person skilled in the art, particularly when viewed in the direction perpendicular to the main extension plane 42a of the bow handle 18a, preferably to the main extension plane 64a of the handle housing 52a.

[0141] The handheld power tool system 36a includes the battery pack 38a for supplying power to the handheld power tool 50a. The battery pack 38a has a battery pack center of gravity 40a. When mounted on the grinder 10a, the battery pack center of gravity 40a is offset from the main extension plane 42a of the bow handle 18a.

[0142] A minimum distance (not shown here) of the battery pack center of gravity 40a from the parting plane 146a of the handle housing 52a, from the main extension plane 64a of the handle housing 52a and / or from the main extension plane 42a of the bow handle 18a is smaller than the maximum transverse extension 200a of the handle housing 52a, in particular of the bow handle 18a, starting from the parting plane 146a of the handle housing 52a, the main extension plane 64a of the handle housing 52a or the main extension plane 42a of the bow handle 18a.

[0143] The minimum distance of the battery pack center of gravity 40a from the parting plane 146a of the handle housing 52a, from the main extension plane 64a of the handle housing 52a, and / or from the main extension plane 42a of the bow handle 18a is in particular less than 20 mm, preferably less than 15 mm, and preferably less than 10 mm. The minimum distance of the battery pack center of gravity 40a from the parting plane 146a of the handle housing 52a, from the main extension plane 64a of the handle housing 52a, and / or from the main extension plane 42a of the bow handle 18a is, for example, at least substantially 8 mm.

[0144] The handheld power tool system 36a has a dust outlet 44a. The dust outlet 44a is arranged on the drive housing 54a, in particular on the fan housing 166a. The battery pack center of gravity 40a and the dust outlet 44a are arranged on different sides of the main extension plane 42a of the bow handle 18a. The center of gravity 26a of the grinder 10a and the battery pack center of gravity 40a are arranged on different sides of the main extension plane 42a of the bow handle 18a.

[0145] The handheld power tool system 36a has a dust collection container 262a, for example a dust box, a dust bag or the like (see Figure 2The dust collection container 262a can be fastened, in particular detachably, to the dust outlet 44a, for example by means of a screw connection, a snap-in connection, or the like. Alternatively, it is also conceivable for at least one dust outlet connecting piece of the dust collection container 262a to be formed integrally with the dust outlet 44a.

[0146] The dust collection container 262a is rotatably mounted on the dust outlet 44a. Alternatively, however, it is also conceivable for the dust collection container 262a to be non-rotatably connected to the dust outlet 44a. The dust collection container 262a is provided for receiving dust and / or debris extracted, preferably by means of the extraction fan 168a.

[0147] Alternatively or additionally, it is conceivable that the dust outlet 44a can be coupled to an active extraction device (not shown here), for example, a vacuum cleaner or the like, particularly in a handheld power tool 50a that is designed without an extraction fan 168a. The dust outlet 44a is arranged on one side of the parting plane 146a, the main extension plane 42a of the bow handle 18a, and / or the main extension plane 64a of the handle housing 52a.

[0148] A ratio of a minimum distance 46a between the battery pack center of gravity 40a in a state arranged on the grinding machine 10a and the drive axis 30a to the maximum longitudinal extent 24a of the tool holder 12a is at least 0.85 and at most 1.2.

[0149] The minimum distance 46a between the battery pack center of gravity 40a in a state arranged on the grinding machine 10a and the drive axis 30a runs at least substantially parallel to the tool receiving surface 102a, the main extension plane 42a of the bow handle 18a, the main extension plane 64a of the handle housing 52a and / or the parting plane 146a. The minimum distance 46a between the battery pack center of gravity 40a in a state arranged on the grinding machine 10a and the drive axis 30a runs at least substantially perpendicular to the drive axis 30a.

[0150] For example, the minimum distance 46a between the battery pack center of gravity 40a and the drive axle 30a is at least substantially 136 mm for a battery pack 38a with 4 Ah electrical charge capacity, at least substantially 148 mm for a battery pack 38a with 8 Ah electrical charge capacity and at least substantially 160 mm for a battery pack 38a with 12 Ah electrical charge capacity.

[0151] The ratio of the minimum distance 46a between the battery pack center of gravity 40a in a state arranged on the grinding machine 10a and the drive axis 30a to the maximum longitudinal extent 24a of the tool holder 24a is at least 0.85 and at most 0.95, preferably at least substantially 0.9, for a battery pack 38a with 4 Ah electrical charge capacity.

[0152] The ratio of the minimum distance 46a between the battery pack center of gravity 40a in a state arranged on the grinding machine 10a and the drive axis 30a to the maximum longitudinal extent 24a of the tool holder 24a is at least 0.95 and at most 1.05, preferably at least substantially 1.0, for a battery pack 38a with 8 Ah electrical charge capacity.

[0153] The ratio of the minimum distance 46a between the battery pack center of gravity 40a in a state arranged on the grinding machine 10a and the drive axis 30a to the maximum longitudinal extent 24a of the tool holder 24a is at least 1.0 and at most 1.1, preferably at least substantially 1.07, for a battery pack 38a with 12 Ah electrical charge capacity.

[0154] An overall center of gravity 176a of the handheld power tool system 36a is arranged in the handle recess 20a of the bow handle 18a. The overall center of gravity 176a of the handheld power tool system 36a relates to the handheld power tool 50a with the battery pack 38a and is free of the dust collection container 262a and / or a protective device 120a. A minimum distance (not shown here) of the overall center of gravity 176a from the parting plane 146a of the handle housing 52a, from the main extension plane 64a of the handle housing 52a and / or from the main extension plane 42a of the bow handle 18a is smaller than the maximum transverse extension 200a of the handle housing 52a, in particular of the bow handle 18a, starting from the parting plane 146a of the handle housing 52a, the main extension plane 64a of the handle housing 52a and / or the main extension plane 42a of the bow handle 18a.It is conceivable that the overall center of gravity 176a is arranged in the parting plane 146a of the handle housing 52a, in the main extension plane 64a of the handle housing 52a and / or in the main extension plane 42a of the bow handle 18a.

[0155] A minimum distance 302a of the drive axle 30a from the overall center of gravity 176a has a value of at least 55 mm to at least 70 mm, in particular depending on the weight of the battery pack 38a. The minimum distance 302a of the drive axle 30a from the overall center of gravity 176a has a value of at most 65 mm to at most 75 mm, in particular depending on the weight of the battery pack 38a.

[0156] A maximum distance 304a of the tool holder 12a from the overall center of gravity 176a in the direction of the drive axis 30a has a value of at least 45 mm to at least 50 mm, in particular depending on the weight of the battery pack 38a. The maximum distance 304a of the tool holder 12a from the overall center of gravity 176a in the direction of the drive axis 30a has a value of at most 52 mm to at most 55 mm, in particular depending on the weight of the battery pack 38a.

[0157] Preferably, the overall center of gravity 176a of the handheld power tool system 36a, at least with a battery pack 38a having a single-layer battery cell arrangement, is arranged within the handle recess 20a of the bow handle 18a. A position of the overall center of gravity 176a of the handheld power tool system 36a with a battery pack 38a having a single-layer battery cell arrangement is such that the handheld power tool 50a can be placed on the tool holder 12a, in particular without tipping over.

[0158] For example, the minimum distance 302a of the drive axle 30a to the overall center of gravity 176a is at least substantially 60 mm for a battery pack 38a with 4 Ah electrical charge capacity and at least substantially 72 mm for a battery pack 38a with 8 Ah electrical charge capacity.

[0159] For example, the maximum distance 304a from the tool holder 12a to the overall center of gravity 176a in the direction of the drive axis 30a is at least substantially 50 mm for a battery pack 38a with 4 Ah electrical charge capacity and at least substantially 53 mm for a battery pack 38a with 8 Ah electrical charge capacity.

[0160] A ratio of the minimum distance 46a between the battery pack center of gravity 40a in a state arranged on the grinding machine 10a and the drive axis 30a to the maximum longitudinal extent 22a of the handle recess 20a of the bow handle 18a is at least 2.0 and at most 3.0.

[0161] The ratio of the minimum distance 46a between the battery pack center of gravity 40a in a state arranged on the grinding machine 10a and the drive axis 30a to the maximum longitudinal extent 22a of the handle recess 20a of the bow handle 18a is at least 2.0 and at most 2.5, preferably at least substantially 2.2, for a battery pack 38a with 4 Ah electrical charge capacity.

[0162] The ratio of the minimum distance 46a between the battery pack center of gravity 40a in a state arranged on the grinding machine 10a and the drive axis 30a to the maximum longitudinal extent 22a of the handle recess 20a of the bow handle 18a is at least 2.2 and at most 2.6, preferably at least substantially 2.4, for a battery pack 38a with 8 Ah electrical charge capacity.

[0163] The ratio of the minimum distance 46a between the battery pack center of gravity 40a in a state arranged on the grinding machine 10a and the drive axis 30a to the maximum longitudinal extent 22a of the handle recess 20a of the bow handle 18a is at least 2.4 and at most 2.8, preferably at least substantially 2.6, for a battery pack 38a with 12 Ah electrical charge capacity.

[0164] The handheld power tool 50a has a handheld power tool device 48a, in particular a handheld grinding machine device. The handheld power tool device 48a has the housing unit 16a.

[0165] The drive housing 54a defines the drive axis 30a of the drive unit 14a. In particular, the motor housing 78a defines the drive axis 30a. The motor housing 78a has a motor mount, in whose central longitudinal axis a motor axis 260a lies. The drive axis 30a is defined by the motor axis 260a. The central longitudinal axis is, in particular, congruent with the drive axis 30a. The drive housing 54a is coupled to the handle housing 52a.

[0166] The drive housing 54a has, on a surface 56a of an upper side 58a of the drive housing 54a, a central web 60a that is elevated relative to the surface 56a. An end 62a of the handle housing 52a is arranged above the central web 60a. The central web 60a slopes downwards toward the surface 56a in both directions, starting from a main extension plane 64a of the handle housing 52a and perpendicular to the main extension plane 64a of the handle housing 52a.

[0167] Two screw bosses 280a of the drive housing 54a are arranged on side walls 278a of the central web 60a. The central web 60a protrudes radially, particularly with respect to the drive axis 30a, with another screw boss 282a of the drive housing 54a being arranged in the protruding region of the central web 60a.

[0168] A maximum transverse extent 306a of the central web 60a is smaller than a maximum total transverse extent 204a of the handle housing 52a. The maximum transverse extent 306a of the central web 60a runs at least substantially perpendicular to the main extension plane 42a of the bow handle 18a, to the main extension plane 64a of the handle housing 52a, to the parting plane 146a and / or to the drive axis 30a. The maximum transverse extent 306a of the central web 60a runs at least substantially parallel to the tool receiving surface 102a of the tool holder 12a. The maximum transverse extent 306a of the central web 60a is smaller than a maximum transverse extent 206a of the handle housing 52a at the end 62a of the central web 60a arranged above the central web 60a (cf. Figure 3 ). The end 62a of the handle housing 52a is arranged above the central web 60a with respect to the tool holder 12a and / or the surface 56a.

[0169] The central web 60a has a main extension axis 208a. The main extension axis 208a of the central web 60a runs at least substantially perpendicular to the drive axis 30a. The main extension axis 208a of the central web 60a runs at least substantially parallel to the main extension plane 42a of the bow handle 18a, to the main extension plane 64a of the handle housing 52a, to the parting plane 146a, and / or to the tool receiving surface 102a. The main extension axis 208a of the central web 60a runs in the main extension plane 42a of the bow handle 18a, in the main extension plane 64a of the handle housing 52a, and / or in the parting plane 146a.

[0170] The central web 60a extends, in particular at least in the direction of the main extension axis 208a of the central web 60a, over a large part of the surface 56a, preferably over at least 50%, preferably over at least 75%, and particularly preferably over 90% of the surface 56a. The upper side 58a, preferably the surface 56a, is arranged facing away from the tool holder 12a. The central web 60a has a curvature in the longitudinal direction, in particular in the direction of the main extension axis 208a of the central web 60a, preferably a curvature adapted to the surface 56a. Alternatively, however, it is also conceivable for the central web 60a to be designed without any curvature in the longitudinal direction.

[0171] The handle housing 52a at least partially covers the central web 60a on both sides along an axis running perpendicular to the main extension plane 64a of the handle housing 52a. The handle housing 52a covers the central web 60a on both sides in the directions running perpendicular to the main extension plane 64a of the handle housing 52a at a height of at least 10%. It is also conceivable for the handle housing 52a to largely cover the central web 60a on both sides in the directions running perpendicular to the main extension plane 64a of the handle housing 52a at a height, in particular at least 50%, preferably at least 70%, and preferably at least 90%. The central web 60a is free of any overlap by the handle housing 52a in the longitudinal direction.

[0172] An end 62a of the handle housing 52a facing the central web 60a, in particular the previously mentioned end 62a, preferably an end 62a that essentially surrounds the drive housing 54a in a ring-like manner, is arranged at a distance from the drive housing 54a, in particular radially and axially. The end 62a is arranged at a distance from the surface 56a.

[0173] The motor housing 78a is arranged on the central web 60a. The end 62a surrounds the motor housing 78a in a ring-like manner. The motor housing 78a is arranged on a side of the central web 60a facing away from the tool holder 12a, in particular above the central web 60a with respect to the tool holder 12a. The motor housing 78a is enclosed by the handle housing 52a in a plane perpendicular to the drive axis 30a. The motor housing 78a is at least substantially completely enclosed by the handle housing 52a in the radial direction starting from the drive axis 30a. The motor housing 78a is at least partially formed integrally with the central web 60a. The handle housing 52a, in particular the end 62a of the handle housing 52a, is arranged at a distance from the drive housing 54a, in particular from the motor housing 78a.

[0174] The end 62a of the handle housing 52a facing the central web 60a is shaped to match the drive housing 54a, in particular the central web 60a and / or the surface 56a. The end 62a has two recesses 210a for the central web 60a. It is conceivable that the end 62a has a constant distance from the drive housing 54a in the direction of the drive axis 30a. Alternatively, however, it is also conceivable that the distance between the end 62a and the drive housing 54a varies in the direction of the drive axis 30a.

[0175] The central web 60a has a receptacle 68a for a user interface 70a. Alternatively or additionally, it is conceivable for the central web 60a to have the receptacle 68a for a communication module 72a. The user interface 70a and / or the communication module 72a are / is part of the handheld power tool 50a, in particular the grinding machine 10a, preferably the handheld power tool device 48a.

[0176] The communication module 72a can comprise one or more data transmission technologies, for example, Bluetooth, NFC, or the like. Alternatively, it is conceivable that the handheld power tool 50a, in particular the handheld power tool device 48a, is designed without a communication module 72a.

[0177] The receptacle 68a is formed as a recess in the central web 60a. The receptacle 68a is arranged on a side of the motor housing 78a facing away from the bow handle 18a. The receptacle 68a is arranged on a side of the handle housing 52a facing away from the battery pack interface 218a of the handheld power tool 50a. The battery pack interface 218a is arranged on a side of the handheld power tool 50a, in particular the grinding machine 10a, facing away from the user interface 70a.

[0178] The user interface 70a here has, for example, two input elements 212a. Alternatively, however, it is also conceivable for the user interface 70a to have only one input element 212a or more than two input elements 212a. The input elements 212a of the user interface 70a are designed here, for example, as buttons. Alternatively, it is conceivable for at least one of the input elements 212a to be designed as a rotary dial, as a switch, or the like. For example, the handheld power tool 50a can be switched on and / or off, a speed of the handheld power tool 50a, preferably of the grinding machine 10a, can be adjusted, or the like via the user interface 70a, in particular the input elements 212a.

[0179] The user interface 70a here has, for example, five output elements 214a. Alternatively, it is conceivable for the user interface 70a to have fewer or more than four output elements 214a. The output elements 214a are designed as lighting elements, in particular LEDs. Alternatively, it is conceivable for at least one of the output elements 214a to be designed as a display or the like. For example, a rotational speed of the handheld power tool 50a, preferably of the grinding machine 10a, a charge level of the battery pack 38a, a device status of the handheld power tool 50a, or the like can be output via the user interface 70a, in particular via at least one of the output elements 214a.

[0180] The user interface 70a is connected for data purposes to a control unit 216a of the handheld power tool 50a, in particular the grinding machine 10a, preferably by cable and / or wirelessly. The control unit 216a is provided for controlling the drive unit 14a. The control unit 216a comprises, in particular, at least one processor and one memory element, as well as an operating program stored on the memory element. The memory element is designed as a digital storage medium, for example, as a hard disk or the like. The control unit 216a is arranged in the handle housing 52a.

[0181] The communication module 72a is configured to communicate with another device, for example, a smartphone, a laptop, a server, a cloud, a gateway, or the like. The communication module 72a is connected to the control unit 216a and / or the user interface 70a via data communication, in particular wirelessly and / or via a cable.

[0182] The communication module 72a is designed and arranged separately from the user interface 70a. The communication module 72a is arranged here, for example, in the handle housing 52a, in particular in the handle bar 18a. The communication module 72a is arranged between the motor housing 78a and the battery pack interface 218a. The communication module 72a is arranged on a side of the handle housing 52a on which the battery pack interface 218a is arranged. It is also conceivable for the communication module 72a to be part of the control unit 216a. Alternatively, it is conceivable for the communication module 72a to be arranged in a support 220a of the handle housing 52a on the drive housing 54a or in another position deemed appropriate by a person skilled in the art. Furthermore, it is also conceivable for the communication module 72a to be part of the user interface 70a.

[0183] The handheld power tool 50a has a plurality of cooling air inlet openings 266a. Alternatively, it is conceivable for the handheld power tool 50a to have only one cooling air inlet opening 266a. The cooling air inlet openings 266a are arranged here, for example, on the handle housing 52a, in particular on the bow handle 18a. The cooling air inlet openings 266a are arranged on a wall of the handle housing 52a that delimits the handle recess 20a. The cooling air inlet openings 266a are arranged on a wall of the handle housing 52a that faces the tool holder 12a and delimits the handle recess 20a. Alternatively, it is also conceivable for the cooling air inlet openings 266a to be arranged on a wall that delimits the handle recess 20a and is closest to the battery pack interface 218a.Alternatively, however, it is also conceivable that the cooling air inlet openings 266a are arranged on the drive housing 54a or at another position on the handle housing 52a that appears appropriate to a person skilled in the art.

[0184] The handheld power tool 50a has a motor fan 268a. The motor fan 268a is arranged in the drive housing 54a, in particular in the motor housing 78a. The motor fan 268a is provided for cooling the drive unit 14a, in particular the electric motor 190a. It is also conceivable that the control unit 216a can be cooled by means of the motor fan 268a. The motor fan 268a is provided, in particular, for drawing in ambient air through the cooling air inlet openings 266a. The motor fan 268a can be driven by the drive unit 14a.

[0185] The drive housing 54a has a plurality of air outlet openings 74a, which are at least partially covered by the handle housing 52a, in particular at least when viewed in a respective main outlet direction 76a of the air outlet openings 74. Alternatively, however, it is conceivable for the drive housing 54a to have only one air outlet opening 74, which is at least partially covered by the handle housing 52a, in particular at least when viewed in a main outlet direction 76a of the air outlet opening 74a. The motor fan 268a is provided to guide the air sucked in via the cooling air inlet openings 266a via the drive unit 14a to the air outlet openings 74a and, in particular, to blow the motor exhaust air out of the air outlet openings 74a.

[0186] The handle housing 52a is free of air outlet openings. The drive housing 54a, in particular the motor housing 78a, has cooling air inlet openings 270a. The cooling air inlet openings 270a of the motor housing 78a are arranged on a side of the motor housing 78a facing away from the tool holder 12a. The cooling air inlet openings 270a of the motor housing 78a are arranged within the handle housing 52a, in particular within the palm grip 160a. The cooling air drawn in via the cooling air inlet openings 270a on the handle housing 52a can be introduced into the motor housing 78a via the cooling air inlet openings 270a of the motor housing 78a.

[0187] The air outlet openings 74a are at least partially covered by the handle housing 52a, at least when viewed in a plane perpendicular to the drive axis 30a. It is conceivable for the handle housing 52a to at least largely cover the air outlet openings 74a, preferably by at least 50%, more preferably by at least 75%, and particularly preferably by at least 90%, in particular when viewed in a plane perpendicular to the drive axis 30a. It is also conceivable for the handle housing 52a to completely cover the air outlet openings 74a, in particular when viewed in a plane perpendicular to the drive axis 30a. The air outlet openings 74a are covered by the end 62a of the handle housing 52a, in particular when viewed in a plane perpendicular to the drive axis 30a.

[0188] The motor housing 78a has air outlet openings 74a. The air outlet openings 74a are arranged above the central web 60a with respect to the tool holder 12a and / or the surface 56a. The air outlet openings 74a are arranged, for example, spaced apart from one another in a circumferential direction, which runs in particular in a plane perpendicular to the drive axis 30a.

[0189] The main outlet directions 76a (in Figure 4 The main outlet directions 76a of one of the air outlet openings 74a are determined by an arrangement and / or geometry of the respective air outlet opening 74a (only the main outlet direction 76a of one of the air outlet openings 74a is shown by way of example). The main outlet directions 76a here, for example, run at least substantially perpendicular to the drive axis 30a. Alternatively, however, it is also conceivable for the main outlet directions 76a to run at an angle to the drive axis 30a, preferably inclined in the direction of the tool holder 12a.

[0190] An opening 80a for the escape of air from the air outlet openings 74a is formed between the end 62a of the handle housing 52a facing the central web 60a and the drive housing 54a. The opening 80a is arranged opposite the top side 58a. The opening 80a is formed by the spaced arrangement of the end 62a of the handle housing 52a from the drive housing 54a, preferably the motor housing 78a.

[0191] The drive housing 54a has a closed cable channel 82a. At least a portion, in particular a majority, preferably at least 50%, preferably at least 70%, of the cable channel 82a is covered by the handle housing 52a, in particular viewed in a plane perpendicular to the drive axis 30a.

[0192] An open end 222a of the cable duct 82a is arranged at the receptacle 68a. Another open end 224a of the cable duct 82a is arranged in an interior region 226a of the handle housing 52a. The cable duct 82a extends from the receptacle 68a into the interior region 226a of the handle housing 52a. The cable duct 82a extends, particularly in the direction of the drive axis 30a, over the entire motor housing 78a.

[0193] The hand-held power tool 50a and / or the hand-held power tool device 48a has an electrical connection unit (not shown here).

[0194] The electrical connection unit has at least one electrical connection element, for example, a cable. The electrical connection unit, in particular the electrical connection element, is provided to connect the user interface 70a to the control unit 216a, in particular at least in terms of data and / or control technology. The user interface 70a can be supplied with electrical energy via the electrical connection unit, preferably via the at least one electrical connection element and / or another electrical connection element of the electrical connection unit.

[0195] The cable duct 82a is provided for receiving at least part of the electrical connection unit, in particular at least the electrical connection element and / or the further electrical connection element. The electrical connection unit, in particular the at least one electrical connection element and / or the further electrical connection element, is / are at least partially arranged in the cable duct 82a. The receptacle 68a has at least one electrical connection (not shown here) for the user interface 70a. At least the electrical connection element and / or the further electrical connection element is / are connected to the connection.

[0196] The drive housing 54a has at least two housing shells 84a, 86a. The drive housing 54a has a shell construction with the two housing shells 84a, 86 as half-shells. The two housing shells 84a, 86a of the drive housing 54a are connected to one another in a drive housing parting plane 228a of the drive housing 54a. The drive housing parting plane 228a runs at least substantially parallel to the parting plane 146a of the handle housing 52a. It is conceivable that the drive housing parting plane 228a corresponds to the parting plane 146a of the handle housing 52a. Alternatively, however, it is also conceivable that the drive housing parting plane 228a runs at an angle to the parting plane 146a.

[0197] The cable duct 82a is arranged between the housing shells 84a, 86a. The cable duct 82a runs within the outer walls of the housing shells 84a, 86a, in particular within at least one outer wall of one of the housing shells 84a, 86a. The cable duct 82a adjoins a contact surface of the outer walls of the two housing shells 84a, 86a. One housing shell 84a of the housing shells 84a, 86a has a groove 88a for the cable duct 82a. Another housing shell 86a of the housing shells 84a, 86a forms a cover (not shown here) for the cable duct 82a.

[0198] The cable duct 82a is arranged at least partially on, in particular in, the central web 60a. It is conceivable that at least a portion of the cable duct 82a runs through the central web 60a, for example, at least 5%, 10%, or 20% of the cable duct 82a.

[0199] The handheld power tool system 36a has a support unit 92a which is designed to park and / or place the grinding machine 10a on a base 94a in at least one parking and / or storage position, wherein the battery pack 38a has a support surface 96a of the support unit 92a for the at least one parking and / or storage position. Figure 7 shows the hand tool system 36a in the storage and / or storage position.

[0200] The support surface 96a is, for example, a continuous surface that rests on the base 94a, particularly in the at least one storage and / or deposit position. The support surface 96a is, for example, a flat surface. The base 94a can be, for example, a floor, a table, or the like. The battery pack 38a has, in particular, a battery pack housing 112a. The battery pack housing 112a has the support surface 96a.

[0201] The battery pack 38a has a handheld power tool interface 230a for electrically connecting to the handheld power tool 50a, in particular the grinding machine 10a. The handheld power tool interface 230a is intended for arrangement on the battery pack interface 218a. The support surface 96a is arranged on a side of the battery pack 38a facing away from the handheld power tool interface 230a.

[0202] The tool holder 12a and / or the tool 178a are / are, in a state of the tool 178a arranged on the tool holder 12a, spaced apart from the base 94a in the storage and / or storage position. The grinding machine 10a can be stored in the storage and / or storage position solely via the support surface 96a. The grinding machine 10a is spaced apart from the base 94a in the storage and / or storage position. In the storage and / or storage position, the grinding machine 10a is connected to the base 94a via the battery pack 38a, preferably can be stored on the base 94a. In the storage and / or storage position, only the support surface 96a on the battery pack 38a of the handheld power tool system 36a is in contact with the base 94a.

[0203] A main extension plane 98a of the support surface 96a extends to the main extension plane 232a of the tool receiving surface 102a of the tool holder 12a at an angle 104a other than 90°. A main extension axis (not shown here) of the handheld power tool 50a, in particular of the grinding machine 10a, extends to the main extension plane 98a of the support surface 96a in the parking and / or storage position at an angle other than 90°. The tool receiving surface 102a extends at least substantially parallel to the main extension axis of the handheld power tool 50a, in particular of the grinding machine 10a. Alternatively, it is conceivable for the tool receiving surface 102a to extend at an angle to the main extension axis of the handheld power tool 50a, in particular of the grinding machine 10a.

[0204] In particular, a handle axis 152a of the handle housing 52a extends at an angle other than 90° to the main extension plane 98a of the support surface 96a in the storage and / or deposit position. The handle axis 152a is defined by the bow handle 18a. The handle axis 152a extends in the parting plane 146a and / or in the main extension plane 64a of the handle housing 52a, in particular in the main extension plane 42a of the bow handle 18a. The handle axis 152a corresponds to a main extension axis of a handle tube 234a of the bow handle 18a.

[0205] The main extension plane 232a of the tool receiving surface 102a and the main extension plane 98a of the support surface 96a enclose an angle 104a that is greater than 80°. The angle 104a enclosed by the main extension plane 232a of the tool receiving surface 102a and the main extension plane 98a of the support surface 96a has a value of less than 90° and greater than 80°. Particularly preferably, the angle 104a enclosed by the main extension plane 98a of the support surface 96a and the main extension plane 232a of the tool receiving surface 102a has a value of at least substantially 86°.

[0206] The tool holder 12a, preferably the tool holder surface 102a, is inclined in the storage and / or deposit position in a direction facing away from the base 94a. A normal 106a of the main extension plane 98a of the support surface 96a intersects the battery pack 38a and the center of gravity 26a of the grinding machine 10a.

[0207] The support unit 92a is designed to park and / or place the grinding machine 10a on the base 94a in at least one further parking and / or storage position, wherein the battery pack 38a has a further support surface 108a of the support unit 92a for the further parking and / or storage position. Figure 8 shows the hand tool system 36a in the further storage and / or storage position.

[0208] In the further parking and / or storage position, the tool receiving surface 102a extends at least substantially parallel to a support plane 116a of the further parking and / or storage position and / or to the flat base 94a. In the further parking and / or storage position, the drive axis 30a extends at least substantially perpendicular to the support plane 116a of the further parking and / or storage position. An edge 110a of the battery pack housing 112a of the battery pack 38a forms the further support surface 108a. The edge 110a is arranged facing away from the tool holder 12a.

[0209] A main extension axis 118a of the battery pack 38a runs at least substantially perpendicular to the main extension axis of the grinding machine 10a. The edge 110a of the battery pack housing 112a runs at least substantially perpendicular to the main extension axis of the handheld power tool 50a, in particular the grinding machine 10a.

[0210] The grinding machine 10a has only one support point 114a, which lies in the support plane 116a of the further parking and / or storage position. The support point 114a is located on the handle housing 52a. Alternatively, it is also conceivable for the support point 114a to be located on the drive housing 54a. The support point 114a of the grinding machine 10a is arranged on a side of the handle housing 52a facing away from the tool holder 12a. The support point 114a is located on a surface 264a of the palm grip 160a. The palm grip 160a has a round shape. The surface 264a of the palm grip 160a, on which the support point 114a is arranged, is curved. Alternatively, however, it is also conceivable that the surface 264a of the palm grip 160a, on which the support point 114a is arranged, is flat.

[0211] In the additional storage and / or placement position, the additional support surface 108a and the support point 114a of the grinding machine 10a lie in the support plane 116a of the additional storage and / or placement position. In the additional storage and / or placement position, the handheld power tool system 36a is in contact with the substrate 94a via the additional support surface 108a on the battery pack 38a and via the support point 114a on the grinding machine 10a.

[0212] The handheld power tool device 48a has the previously mentioned protective device 120a, in particular a wall protection ring, for protecting the tool 178a that can be arranged on the handheld power tool 50a and / or the tool holder 12a from collision with objects in a working environment of the handheld power tool 50a. The protective device 120a is in particular designed as a protective ring. The protective device 120a is preferably configured as a bumper for the handheld power tool 50a. In particular, the protective device 120a is intended to counteract a collision of the tool holder 12a and / or the tool 178a arranged on the tool holder 12a against walls or the like in the working environment.

[0213] The protective device 120a has a diaphragm unit 122a and / or a light guide unit 124a for at least one light source 132a.

[0214] The protective device 120a is arranged on the drive housing 54a in at least one operating state. The protective device 120a is intended for arrangement on the fan housing 166a. The diaphragm unit 122a is provided for shielding an area from light incident from the at least one light source 132a. The diaphragm unit 122a has a plurality of diaphragm elements 100a. Alternatively, it is conceivable for the diaphragm unit 122a to have only one diaphragm element 100a. The diaphragm elements 100a are designed as opaque components. It is also conceivable for the diaphragm elements 100a to be designed as reflectors, for example as mirrors, or the like.

[0215] The protective device 120a has a base body 236a. The base body 236a has a plurality of windows 276a. The operator can view the workpiece through the windows 276a while machining it. Alternatively, however, it is also conceivable for the base body 236a to be designed without windows 276a.

[0216] The aperture unit 122a, in particular the aperture elements 100a, are formed integrally with the base body 236a. The aperture unit 122a, in particular the aperture elements 100a, is / are formed by the base body 236a of the protective device 120a.

[0217] Alternatively, it is also conceivable that the aperture unit 122a, in particular the aperture elements 100a, is / are formed separately from the base body 236a. In particular, it is alternatively conceivable that the aperture unit 122a, preferably the aperture elements 100a, is / are attachable to the base body 236a, preferably detachably. It is also conceivable that the aperture unit 122a, in particular the aperture elements 100a, is / are adjustably arranged on the base body 236a, preferably in order to adapt a shielding area by the aperture unit 122a.

[0218] The light guide unit 124a is arranged on the base body 236a. The light guide unit 124a here has, for example, three light guide elements 238a. Alternatively, it is conceivable for the light guide unit 124a to have more or fewer than three light guide elements 238a. The light guide unit 124a is intended to guide and / or emit light from the at least one light source 132a. The light guide elements 238a are designed, for example, as transparent fibers, tubes, or rods. The light guide elements 238a are designed here, for example, as emitting elements, in particular as light-scattering elements, for example in the form of a roughened portion, a scattering glass, plastic, or ceramic plate, a scattering plastic film, or the like.

[0219] The aperture unit 122a is provided to block the light output of at least one light source 132a at least in the direction of a designated operator side. The aperture unit 122a is provided to block the light output of the at least one light source 132a in a direction away from the tool holder 12a.

[0220] It is conceivable that the protective device 120a has a light source unit 126a. The light source unit 126a here has, for example, two light sources 132a. Alternatively, it is also conceivable that the light source unit 126a has a number of light sources 132a that differs from two, for example, only one light source 132a or more than two light sources 132a. Furthermore, it is alternatively conceivable that the protective device 120a is designed without a light source unit 126a. The light source unit 126a, in particular the light sources 132a, is / are arranged on the base body 236a. The light sources 132a are designed, for example, as LEDs, as incandescent lamps, or as another illuminant that appears appropriate to a person skilled in the art. Alternatively, it is also conceivable that the hand-held power tool 50a has at least one of the light sources 132a.

[0221] It is also conceivable for the protective device 120a to have at least one energy source 128a for at least one light source 132a. The protective device 120a here, for example, has two energy sources 128a. Each light source 132a is assigned one of the energy sources 128a. Alternatively, however, it is also conceivable for the protective device 120a to have only one energy source 128a or more than two energy sources 128a, or to be designed without any energy sources 128a. The energy sources 128a are designed, for example, as batteries, rechargeable batteries, or the like.

[0222] The energy sources 128a are provided for supplying energy to the respective light source 132a, in particular the light source unit 126a. The energy sources 128a are connected to the light sources 132a, in particular the light source unit 126a, at least in one operating state. Alternatively or additionally, however, it is also conceivable that the light sources 132a, in particular the light source unit 126a, can be supplied with electrical energy via the handheld power tool 50a, in particular the grinding machine 10a, for example via an electrical plug connection between the protective device 120a and the handheld power tool 50a.

[0223] The protective device 120a here has, for example, an operating element 130a for the light sources 132a, in particular the light source unit 126a. The at least one operating element 130a is arranged on the base body 236a. The at least one operating element 130a can be designed, for example, as a button, a rotary dial, a switch, or the like. The at least one operating element 130a can be used, for example, to switch the light sources 132a on and / or off, and / or to adjust a lighting parameter, for example, a light color, an intensity, or the like.

[0224] Furthermore, it is conceivable that the protective device 120a has a sensor unit 134a for detecting an operation of the hand-held power tool 50a, in particular for activating at least one light source 132a during operation of the hand-held power tool 50a.

[0225] The sensor unit 134a is arranged on the base body 236a. The sensor unit 134a has at least one sensor element (not shown here), for example a vibration sensor or the like, for detecting operation of the handheld power tool 50a, in particular of the grinding machine 10a. The sensor unit 134a has control electronics (not shown here) for processing the sensor signals. The control electronics are connected to the light sources 132a for control purposes. The control electronics are provided to switch on the light sources 132a upon detection of operation of the handheld power tool 50a. It is conceivable that the control electronics are part of the control unit 216a of the handheld power tool 50a. Alternatively, however, it is also conceivable that the control electronics are designed separately from the control unit 216a.

[0226] The protective device 120a is formed at least partially from a thermoplastic elastomer. The base body 236a is formed at least partially from a thermoplastic elastomer. At least one surface 240a of the protective device 120a, in particular of the base body 236a, facing away from the handheld power tool 50a is formed from a thermoplastic elastomer.

[0227] It is also conceivable for the protective device 120a to have a protective layer consisting at least partially of a thermoplastic elastomer. The protective layer can be a sleeve placed over the base body 236a, a layer glued to the base body 236a, or the like. Alternatively or additionally, it is also conceivable for the protective layer to be clamped, screwed, or the like onto the base body 236a. Furthermore, it is also conceivable for the base body 236a to be overmolded with the protective layer, in particular for the protective layer to be injection-molded onto the base body 236a, for example, using a two-component injection molding process.

[0228] The protective device 120a has a fastening unit 284a for a releasable fastening to the hand-held power tool 50a (cf. Figures 9a and 9b ). The fastening unit 284a has two pairs of parallel fixing rails 286a. The fixing rails 286a each have a locking recess 288a.

[0229] The hand-held power tool 50a, in particular the drive housing 54a, preferably the fan housing 166a, has a protective fastening unit 290a corresponding to the fastening unit 284a (cf. Figures 10a and 10b ).

[0230] The protective fastening unit 290a has two fixing rails 292a. When the protective device 120a is mounted on the handheld power tool 50a, the fixing rails 292a of the protective fastening unit 290a are arranged between the fixing rails 286a of the fixing unit 284a. The fixing rails 286a of the fixing unit 284a and the fixing rails 292a of the protective fastening unit 290a are provided for fixing relative to one another in an axial direction, preferably with respect to the drive axis 30a. The protective fastening unit 290a has two locking elements 294a, in particular locking hooks or the like. The locking elements 294a are provided to cooperate with the locking recesses 288a of the fixing unit 284a to secure the protective device 120a to the handheld power tool 50a.

[0231] The protective device 120a has an asymmetrical basic shape, particularly adapted to a dust outlet 44a of the handheld power tool 50a. A shape of the base body 236a deviates from a circular shape in at least one section along its longitudinal extent, preferably in a region of the dust outlet 44a.

[0232] The handheld power tool device 48a has a damping unit 136a that couples the drive housing 54a to the handle housing 52a. The drive housing 54a has an extension arm 138a that extends at least radially with respect to the drive axis 30a. At least a part 140a of the damping unit 136a is arranged on the extension arm 138a. The housing shells 84a, 86 are screwed to one another on the extension arm 138a, in particular via a screw boss 274a of the housing shells 84a, 86a. A screw boss 272a of the handle housing shells 192a, 194a in the region of the extension arm 138a is arranged at a distance from the screw boss 274a of the housing shells 84a, 86a.

[0233] The damping unit 136a has a plurality of damping elements 164a, 170a, 246a, 248a. The damping elements 164a, 170a, 246a, 248a are formed from at least one elastic material, in particular an elastic plastic. The damping elements 164a, 170a, 246a, 248a can be designed as blocks, rings, ring segments, plates, or the like.

[0234] At least some of the damping elements 164a, 170a, 246a, 248a are fixed by a clamp between the drive housing 54a and the handle housing 52a. It is also conceivable for the damping elements 164a, 170a, 246a, 248a to have an adhesive layer for attachment to the drive housing 54a and / or to the handle housing 52a. Additionally or alternatively, it is conceivable for at least some of the damping elements 164a, 170a, 246a, 248a to be attachable to the handle housing 52a and / or the drive housing 54a by means of damping element receptacles, for example, recesses, locating bolts, or the like, and / or by a screw connection or the like.

[0235] Part 140a of damping unit 136a on boom 138a here has, for example, two damping elements 164a of the damping elements 164a, 170a, 246a, 248a. Alternatively, it is also conceivable that part 140a of damping unit 136a on boom 138a has only one damping element 164a or more than two damping elements 164a.

[0236] The drive housing 54a is connected to the handle housing 52a via the damping elements 164a, 170a, 246a, 248a. The damping unit 136a is provided for vibration decoupling of the handle housing 52a from the drive housing 54a. The handle housing 52a is coupled to the drive housing 54a via two different coupling regions 250a, 252a of the damping unit 136a. The handle housing 52a has two spaced-apart inner regions 226a, 254a, in each of which a part of the drive housing 54a is arranged. The two coupling regions 250a, 252a are arranged in the two inner regions 226a, 254a.

[0237] The extension arm 138a is arranged on a side of the drive housing 54a facing the battery pack interface 218a. The extension arm 138a is arranged within the handle housing 52a, in particular in a further interior region 254a of the two interior regions 226a, 254a of the handle housing 52a. The extension arm 138a forms an outermost point of the drive housing 54a, viewed in a direction perpendicular to the drive axis 30a and extending in the parting plane 146a. The extension arm 138a is at least partially enclosed by the handle housing 52a. It is also conceivable for the communication module 72a to be arranged between the extension arm 138a and the battery pack interface 218a, in particular in the further interior region 254a.

[0238] The extension arm 138a has at least one damping element receptacle 256a for the damping elements 164a. The damping elements 164a are shaped to fit the damping element receptacle 256a. The damping element receptacle 256a has two receiving bolts, each for receiving one of the annular damping elements 164a. The damping element receptacle 256a is provided for receiving the damping elements 164a perpendicular to the main extension plane 64a of the handle housing 52a, in particular to the main extension plane 42a of the bow handle 18a, and / or to the parting plane 146a. The extension arm 138a is T-shaped here, for example, in particular for receiving the at least two damping elements 164a.

[0239] Alternatively, however, it is also conceivable for the damping element receptacle 256a to be designed as a recess, in particular for receiving a damping element 164a formed as a block, plate, or the like. The damping elements 164a are fixed to the damping element receptacle 256a by the handle housing 52a, in particular the handle housing shells 192a, 194a. Alternatively or additionally, however, it is also conceivable for the damping elements 164a to be glued, screwed, or similarly bonded to the damping element receptacle 256a.

[0240] A maximum distance 142a of the boom 138a from the drive axis 30a is greater than a maximum distance 144a of the tool holder 12a from the drive axis 30a, in particular when viewed in a parting plane 146a of the handle housing 52a (cf. Figure 6). A maximum distance 258a of the part 140a of the damping unit 136a on the boom 138a from the drive axis 30a is greater than the maximum distance 144a of the tool holder 12a from the drive axis 30a, particularly viewed in the parting plane 146a of the handle housing 52a.

[0241] A ratio of a maximum transverse extent 148a of part 140a of the damping unit 136a to a minimum distance 150a of part 140a of the damping unit 136a from the handle axis 152a of the handle housing 52a is at least 0.9 and at most 1.05. The maximum transverse extent 148a of part 140a of the damping unit 136a runs at least substantially perpendicular to the main extension plane 64a of the handle housing 52a, in particular the main extension plane 42a of the bow handle 18a, and / or the parting plane 146a. The maximum transverse extent 148a of part 140a of the damping unit 136a runs at least substantially parallel to the tool receiving surface 102a. The minimum distance 150a of the part 140a of the damping unit 136a from the handle axis 152a is measured parallel to the parting plane 146a, in particular to the main extension plane 42a of the bow handle 18a, preferably to the main extension plane 64a of the handle housing 52a.

[0242] The maximum transverse extent 148a of part 140a of the damping unit 136a is, for example, at least 40 mm, preferably at least 45 mm. The maximum transverse extent 148a of part 140a of the damping unit 136a is, for example, at most 60 mm, preferably at most 50 mm. The maximum transverse extent 148a of part 140a of the damping unit 136a is defined by a maximum distance between the two damping elements 164a, in particular in a direction perpendicular to the main extension plane 42a of the bar handle 18a.

[0243] The ratio of the maximum transverse extent 148a of the part 140a of the damping unit 136a to the maximum height 34a of the grinding machine 10a is preferably at least 0.35, preferably at least 0.4. The ratio of the maximum transverse extent 148a of the part 140a of the damping unit 136a to the maximum height 34a of the grinding machine 10a is preferably at most 0.5, preferably at most 0.45.

[0244] The minimum distance 150a of part 140a of damping unit 136a from the handle axis 152a is preferably at least 45 mm, preferably at least 50 mm. The minimum distance 150a of part 140a of damping unit 136a from the handle axis 152a is preferably at most 60 mm, preferably at most 55 mm. Alternatively, however, it is also conceivable that the minimum distance 150a of part 140a of damping unit 136a from the handle axis 152a is less than 45 mm or greater than 60 mm.

[0245] A ratio of the maximum transverse extent 148a of part 140a of the damping unit 136a to a minimum distance 154a of the part 140a of the damping unit 136a from the drive axis 30a is at least 0.7, preferably at least 0.73. The ratio of the maximum transverse extent 148a of the part 140a of the damping unit 136a to the minimum distance 154a of the part 140a of the damping unit 136a from the drive axis 30a is a maximum of 0.8, preferably a maximum of 0.75. The minimum distance 154a of the part 140a of the damping unit 136a from the drive axis 30a is measured parallel to the parting plane 146a, in particular to the main extension plane 42a of the bow handle 18a, preferably to the main extension plane 64a of the handle housing 52a.

[0246] The minimum distance 154a of part 140a of damping unit 136a from drive axis 30a is preferably at least 55 mm, preferably at least 60 mm. The minimum distance 154a of part 140a of damping unit 136a from drive axis 30a is preferably at most 70 mm, preferably at most 65 mm. Alternatively, however, it is also conceivable that the minimum distance 154a of part 140a of damping unit 136a from drive axis 30a is less than 55 mm or greater than 70 mm.

[0247] A ratio of a maximum height 156a of the housing unit 16a to the minimum distance 150a of the part 140a of the damping unit 136a on the extension arm 138a from the handle axis 152a of the handle housing 52a is a maximum of 2.25. The maximum height 156a of the housing unit 16a extends in the parting plane 146a, in particular in the main extension plane 64a of the handle housing 52a, preferably in the main extension plane 42a of the bow handle 18a.

[0248] The maximum height 156a of the housing unit 16a runs parallel to the drive axis 30a. The maximum height 156a of the housing unit 16a is, for example, at least 90 mm, preferably at least 100 mm. The maximum height 156a of the housing unit 16a is, for example, a maximum of 120 mm, preferably a maximum of 110 mm. Alternatively, however, it is also conceivable that the maximum height 156a of the housing unit 16a in the direction of the drive axis 30a is less than 90 mm or greater than 120 mm.

[0249] A ratio of a maximum extension 296a of the damping unit 136a, in particular a maximum distance 298a of the damping elements 164a, 170a, 246a, 248a, in the direction of the drive axis 30a to the maximum height 156a of the housing unit 16a is at least 0.8, preferably at least 0.85. A ratio of the maximum extension 296a of the damping unit 136a, in particular the maximum distance 298a of the damping elements 164a, 170a, 246a, 248a, in the direction of the drive axis 30a to the maximum height 34a of the grinding machine 10a is at least 0.7, preferably at least 0.75. The maximum extension 296a of the damping unit 136a, in particular the maximum distance 298a of the damping elements 164a, 170a, 246a, 248a, in the direction of the drive axis 30a is, for example, at least 85 mm, preferably at least 90 mm (cf. Figure 4 ).

[0250] A ratio of the minimum distance 154a of the part 140a of the damping unit 136a from the drive axis 30a in a direction perpendicular to the drive axis 30a to a maximum longitudinal extent 158a of the housing unit 16a is greater than 0.3. The maximum longitudinal extent 158a of the housing unit 16a runs perpendicular to the drive axis 30a. The maximum longitudinal extent 158a of the housing unit 16a runs at least substantially parallel to the tool receiving surface 102a. The maximum longitudinal extent 158a of the housing unit 16a runs in the parting plane 146a, preferably in the main extension plane 64a of the handle housing 52a, in particular the main extension plane 42a of the bow handle 18a.

[0251] The maximum longitudinal extent 158a of the housing unit 16a is preferably at least 175 mm, preferably at least 180 mm. The maximum longitudinal extent 158a of the housing unit 16a is preferably at most 190 mm, preferably at most 185 mm. Alternatively, however, it is also conceivable that the maximum longitudinal extent 158a of the housing unit 16a is less than 175 mm or greater than 190 mm.

[0252] A ratio of the minimum distance 154a between the part 140a of the damping unit 136a and the drive axis 30a to the minimum distance 150a between the part 140a of the damping unit 136a and the handle axis 152a of the handle housing 52a is at least 1.2 and a maximum of 1.3.

[0253] The bow handle 18a is supported via the part 140a of the damping unit 136a and / or via the arm 138a on the drive housing 54a to form the closed handle recess 20a of the bow handle 18a.

[0254] The part 140a of the damping unit 136a and / or the extension arm 138a is arranged in the direction of the handle axis 152a at the level of the handle recess 20a. The part 140a of the damping unit 136a on the extension arm 138a and / or the extension arm 138a is arranged, viewed in the direction of the handle axis 152a, at least substantially entirely within the maximum longitudinal extent 22a of the handle recess 20a.

[0255] The two damping elements 164a of part 140a of the damping unit 136a on the arm 138a are arranged spaced apart from one another. The damping elements 164a are arranged on opposite sides of the arm 138a. The damping elements 164a are arranged on different sides of the parting plane 146a, in particular the main extension plane 64a of the handle housing 52a, preferably the main extension plane 42a of the bow handle 18a. The damping elements 164a are arranged mirror-symmetrically with respect to the parting plane 146a, in particular the main extension plane 64a of the handle housing 52a, preferably the main extension plane 42a of the bow handle 18a.

[0256] The extension arm 138a is arranged on the fan housing 166a. The extension arm 138a is at least partially formed integrally with the fan housing 166a. The extension arm 138a is arranged on a side of the fan housing 166a facing the battery pack interface 218a. The fan housing 166a is arranged between the motor housing 78a and the tool holder 12a. The extraction fan 168a is made of metal, in particular cast. Alternatively, however, it is also conceivable for the extraction fan 168a to be made of plastic or a combination of plastic and metal.

[0257] The motor housing 78a and the fan housing 166a are at least partially formed integrally with one another. The fan housing 166a and the motor housing 78a have common housing shells 84a, 86a. The two housing shells 84a, 86a each comprise one half of the fan housing 166a and the motor housing 78a.

[0258] For example, two additional damping elements 170a of the damping unit 136a are arranged on the motor housing 78a in such a way that, viewed in a sectional plane 172a perpendicular to the drive axis 30a, the damping elements 170a are only partially enclosed by the handle housing 52a through the respective damping element 170a. Alternatively, however, it is also conceivable for the damping unit 136a to have only one additional damping element 170a or more than two additional damping elements 170a.

[0259] The two further damping elements 170a are arranged between the handle housing 52a and the motor housing 78a. The two further damping elements 170a are arranged within the handle housing 52a. The two further damping elements 170a are arranged on opposite sides of the motor housing 78a, in particular on different housing shells 84a, 86a. The two further damping elements 170a are arranged on different sides of the parting plane 146a and / or the drive housing parting plane 228a. The two further damping elements 170a are arranged symmetrically to the parting plane 146a and / or to the drive housing parting plane 228a. The two further damping elements 170a are cube-shaped. The further damping elements 170a are arranged at the level of the air outlet openings 74a, viewed in the axial direction.

[0260] The damping unit 136a has two sealing elements 174a, in particular a sealing ring, to block the inlet of exhaust air into the handle housing 52a. The sealing elements 174a are arranged between the handle housing 52a and the drive housing 54a.

[0261] The sealing elements 174a are formed as circular arc segments. The sealing elements 174a are arranged within the handle housing 52a. The sealing elements 174a are arranged on opposite sides of the motor housing 78a, in particular on different housing shells 84a, 86a. The sealing elements 174a are arranged on different sides of the parting plane 146a and / or the drive housing parting plane 228a. The sealing elements 174a are arranged symmetrically to the parting plane 146a and / or the drive housing parting plane 228a.

[0262] Alternatively, however, it is also conceivable that the damping unit 136a has only one sealing element 174a or more than two sealing elements 174a.

[0263] The sealing elements 174a surround the motor housing 78a in a circumferential direction, which runs in particular in a plane perpendicular to the drive axis 30a, at least substantially completely, preferably in an angular range of at least 270°, preferably of at least 330° and particularly preferably of at least 350°.

[0264] The sealing elements 174a are provided to at least substantially completely fill a gap between the motor housing 78a and the handle housing 52a. The sealing elements 174a are formed from an elastic material, preferably an elastic plastic. The sealing elements 174a preferably have a different material hardness than the damping elements 164a, 170a, 246a, 248a. The material hardness of the sealing elements 174a is lower than a material hardness of the damping elements 164a, 170a, 246a, 248a. Alternatively, it is conceivable that the sealing elements 174a and the damping elements 164a, 170a, 246a, 248a have an identical material hardness. The sealing elements 174a are arranged above the air outlet openings 74a with respect to the tool holder 12a. The sealing elements 174a are additionally provided for supporting and / or vibration decoupling of the handle housing 52a from the drive housing 54a.

[0265] The damping unit 136a has four additional damping elements 246a. Alternatively, however, it is also conceivable for the damping unit 136a to have fewer than four additional damping elements 246a or more than four additional damping elements 246a. The additional damping elements 246a are arranged between the handle housing 52a and the motor housing 78a. The additional damping elements 246a are arranged within the handle housing 52a. The additional damping elements 246a are arranged uniformly in a circumferential direction of the motor housing 78a, which runs in particular in a plane perpendicular to the drive axis 30a.

[0266] Two of the additional damping elements 246a are arranged on opposite sides of the motor housing 78a, in particular on different housing edges 84a, 86a. Two of the additional damping elements 246a are arranged on different sides of the parting plane 146a and / or the drive housing parting plane 228a.

[0267] The additional damping elements 246a are arranged symmetrically to the parting plane 146a and / or the drive housing parting plane 228a. The additional damping elements 246a are cube-shaped. The two sealing elements 174a are arranged between the further damping elements 170a and the additional damping elements 246a, viewed in the axial direction.

[0268] The damping unit 136a has a further additional damping element 248a. The further additional damping element 248a is provided for damping axial relative movements, in particular vibrations, between the drive housing 54a and the handle housing 52a with respect to the drive axis 30a and / or for axial support between the handle housing 52a and the drive housing 54a. Alternatively or additionally, however, it is also conceivable for the further additional damping element 248a to be provided for damping radial movements and / or for radial support between the handle housing 52a and the drive housing 54a. The further additional damping element 248a is preferably arranged in an extension of the motor axis 260a, preferably between the motor housing 78a and the handle housing 52a.

[0269] The further additional damping element 248a is, for example, circularly cylindrical in shape. Alternatively, however, it is also conceivable for the further additional damping element 248a to be cube-shaped or similar. The further additional damping element 248a is arranged, for example, prestressed between the drive housing 54a and the handle housing 52a.

[0270] The maximum extension 296a of the damping unit 136a, in particular the maximum distance 298a of the damping elements 164a, 170a, 246a, 248a, in the direction of the drive axis 30a is defined by a maximum distance between the further additional damping element 248a and the damping elements 164a in the direction of the drive axis 30a.

[0271] Figure 11shows a schematic sequence of a method for producing a hand-held power tool device 48a, in particular the one already mentioned. The protective device 120a is made at least partially from a thermoplastic elastomer.

[0272] In a process step, in particular a molding step 242a, the base body 236a is molded. In a process step, in particular an overmolding step 244a, the base body 236a is overmolded with a protective layer made of thermoplastic elastomer. Alternatively, it is also conceivable that the base body 236a is already at least partially molded with a thermoplastic elastomer, in particular in the molding step 242a.

[0273] In Figure 12A further embodiment of the invention is shown. The following descriptions and the drawings are essentially limited to the differences between the embodiments, whereby with regard to components with the same designation, in particular with regard to components with the same reference numerals, reference is also made to the drawings and / or the description of the other embodiments, in particular to the Figures 1 to 11 To distinguish the embodiments, the letter a is added to the reference numerals of the embodiment in the Figures 1 to 11 In the example of the Figure 12 the letter a is replaced by the letter b.

[0274] Figure 12shows a handheld power tool system 36b with a handheld power tool 50b. The handheld power tool 50b is designed as a sander 10b. The handheld power tool 50b is designed as a cordless sander. Alternatively, however, it is also conceivable for the handheld power tool 50b, in particular the sander 10b, to be designed as a mains-operated handheld power tool. The sander 10b is designed as an eccentric sander. Alternatively, however, it is also conceivable for the sander 10b to be designed as an orbital sander, a delta sander, or the like.

[0275] The handheld power tool 50b has a tool holder 12b, in particular a grinding pad, for receiving a tool 178b. The handheld power tool 50b has a drive unit (not shown here) for driving the tool holder 12b.

[0276] The hand-held power tool 50b has a housing unit 16b.

[0277] The housing unit 16b has a handle housing 52b and a fan housing 166b for accommodating an exhaust fan. The fan housing 166b is designed as a metal housing, in particular as an aluminum housing. Alternatively, however, it is also conceivable for the fan housing 166b to be at least partially designed as a plastic housing. The handle housing 52b has a bow handle 18b. The handle housing 52b is coupled to the fan housing 166b. A drive unit, in particular at least one electric motor, of the handheld power tool 50b is arranged in the handle housing 52b.

[0278] The ratio of a maximum longitudinal extent of a grip recess 20b of the bow handle 18b to a maximum longitudinal extent of the tool holder 12b is at least 0.35 and at most 0.5. The bow handle 18b is designed to be closed. The grip recess 20b is enclosed, in particular delimited, by walls of the handle housing 52b, as viewed in the main extension plane of the bow handle 18b. The fan housing 166b lies directly against the handle housing 52b. The handle housing 52b has air outlet openings 74b.

[0279] The handheld power tool 50b has a handheld power tool device 48b. The housing unit 16b is part of the handheld power tool device 48b. The fan housing 166b has a central web 60b on a surface of an upper side of the fan housing 166b that is elevated relative to the surface. The central web 60b slopes downwards toward the surface in both directions extending from a main extension plane (not shown here) of the handle housing 52b and perpendicular to the main extension plane of the handle housing 52b.

[0280] The handheld power tool system 36b has a battery pack 38b for supplying power to the handheld power tool 50b. The handheld power tool system 36b has a support unit 92b, which is designed for setting down and / or placing down the grinding machine 10b on a surface (not shown here) in at least one setting down and / or depositing position, wherein the battery pack 38b has a support surface of the support unit 92b for the at least one setting down and / or depositing position.

[0281] The handheld power tool 50b has a receptacle 68b for a user interface 70b of the handheld power tool 50b. The receptacle 68b is bounded by the handle housing 52b and the fan housing 166b.

Claims

1. Sanding machine (10a; 10b), in particular a cordless sanding machine, preferably an orbital sander or eccentric sander, with a tool holder (12a; 12b), in particular a sanding pad, with a drive unit (14a) for driving the tool holder (12a; 12b) and with a housing unit (16a; 16b) which has a handle (18a; 18b), characterized in that a ratio of a maximum longitudinal extent (22a) of a handle recess (20a; 20b) of the bow handle (18a; 18b) to a maximum longitudinal extent (24a) of the tool holder (12a; 12b) is at least 0.35 and at most 0.

5.

2. Grinding machine (10a; 10b) according to claim 1, whose center of gravity (26a) is arranged in the handle recess (20a, 20b).

3. Grinding machine (10a; 10b) according to claim 2, characterized in thata ratio of a maximum distance (28a) of the tool holder (12a; 12b) from the center of gravity (26a) in the direction of a drive axis (30a) of the drive unit (14a; 14b) to a minimum distance (32a) between the drive axis (30a) and the center of gravity (26a) is at least 2.8 and at most 3.

5.

4. Grinding machine (10a; 10b) according to claim 2 or 3, whose maximum height (34a) in the direction of a drive axis (30a) of the drive unit (14a) to a maximum distance (28a) between the tool holder (12a; 12b) and the center of gravity (26a) in the direction of the drive axis (30a) has a ratio of at least 2.8 and at most 3.

2.

5. Grinding machine (10a; 10b) according to one of the preceding claims, characterized in that the handle recess (20a; 20b) is closed, preferably essentially oval.

6. Hand tool system (36a; 36b) with a grinding machine (10a; 10b) according to one of the preceding claims and with a battery pack (38a; 38b).

7. Hand tool system (36a; 36b) according to claim 6, characterized in that the battery pack (38a; 38b) has a battery pack center of gravity (40a) which, in a state arranged on the grinding machine (10a; 10b), is arranged offset from a main extension plane (42a) of the bow handle (18a; 18b).

8. Hand tool system (36a; 36b) according to claim 7, characterized in that the grinding machine (10a; 10b) has a dust outlet (44a), wherein the battery pack center of gravity (40a) and the dust outlet (44a) are arranged on different sides of the main extension plane (42a) of the bow handle (18a; 18b).

9. Hand tool system (36a; 36b) according to claim 7 or 8, characterized in thata ratio of a minimum distance (46a) between the battery pack center of gravity (40a) in a state arranged on the grinding machine (10a; 10b) and a drive axis (30a) of the drive unit (14a) to a maximum longitudinal extent (24a) of the tool holder (12a; 12b) is at least 0.85 and at most 1.

2.

10. Hand tool system (36a; 36b) according to one of claims 6 to 9, whose overall center of gravity (176a) is arranged in the handle recess (20a; 20b) of the bow handle (18a; 18b).

11. Hand tool system (36a; 36b) according to one of claims 6 to 10, characterized in thata ratio of a minimum distance (46a) between the battery pack center of gravity (40a) of the battery pack (38a; 38b) in a state arranged on the grinding machine (10a; 10b) and a drive axis (30a) of the drive unit (14a; 14b) to a maximum longitudinal extent (22a) of a handle recess (20a; 20b) of the bow handle (18a; 18b) is at least 2.0 and at most 3.0.

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