Hand-held machine tool

Abstract

A handheld power tool (100) is disclosed, comprising a housing (110), an electrically commutated drive motor (114) having a drive shaft (116) and arranged substantially within the housing (110), a control unit (270) for at least controlling the drive motor (114), which control unit has a control unit circuit board (272), and a workstation lighting unit (200) for illuminating a workstation. It is proposed that the workstation lighting unit (200) be arranged at an angle to the control unit circuit board (272).

Description

[0001] The present invention relates to a hand-held power tool according to the preamble of claim 1. State of the art

[0002] A hand-held power tool with a drive motor, a gearbox and a control unit is already known from DE 10 2018 206 876 A1. Disclosure of the invention

[0003] The present invention is based on a handheld power tool comprising a housing, an electrically commutated drive motor having a drive shaft and arranged substantially within the housing, a control unit for controlling at least the drive motor, which control unit has a control unit circuit board, and a workstation lighting unit for illuminating a workstation. It is proposed that the workstation lighting unit be arranged at an angle to the control unit circuit board.

[0004] The invention provides a handheld power tool with increased robustness. Furthermore, it allows for increased illumination of the work area while simultaneously reducing, or in particular minimizing, shadowing. Furthermore, the invention reduces manufacturing costs.

[0005] The handheld power tool can be designed as an electrically powered handheld power tool. The electrically powered handheld power tool can be designed as a mains-powered or battery-powered handheld power tool. For example, the handheld power tool can be designed as a screwdriver, a drill driver, an impact wrench, a hammer, a rotary hammer, or an impact drill driver.

[0006] The housing of the handheld power tool is designed to at least partially accommodate the drive motor, the control unit, the control unit circuit board, and the workstation lighting unit. The housing can be designed as a shell housing with two half-shells.

[0007] The handheld power tool may have a tool holder. The tool holder may be configured as an internal tool holder, such as a bit holder, and / or as an external tool holder, such as a socket holder. It is also conceivable for the tool holder to be configured as a drill chuck. The tool holder may accommodate insert tools, such as screw bits or socket wrenches, allowing a user to create screw connections between a fastening element and a fastening support.

[0008] The handheld power tool has a drive unit. The drive unit comprises the electrically commutated drive motor and a gear mechanism. The drive motor can be designed, in particular, as at least one electric motor. The gear mechanism can be designed as at least one planetary gear mechanism, wherein it can, for example, be switchable. The planetary gear mechanism can have at least one planet carrier and planetary gears. In addition, the gear mechanism, in particular the planetary gear mechanism, can have at least one ring gear. In a switchable gear mechanism, switching between at least two gear stages can take place by means of at least one gear-changing element, in particular a gear-changing switch. The drive motor is designed such that it can be actuated via a handset. When the handset is actuated by a user, the drive motor is switched on and the handheld power tool is put into operation.If the user no longer operates the handset, the drive motor is switched off. Preferably, the drive motor is electronically controllable and / or regulated in such a way that reversing operation and a desired rotational speed can be set. In reversing operation, the drive motor can be switched between a clockwise and a counterclockwise direction of rotation. To switch the drive motor in reversing operation, the handheld power tool can have a rotational direction switching element, in particular a rotational direction switch.

[0009] The handheld power tool may have a percussion mechanism. The percussion mechanism generates high torque peaks during operation to loosen or tighten stuck fasteners or drill holes. The percussion mechanism may be connected to the drive motor via the gear unit. The percussion mechanism may be configured, for example, as a rotary percussion mechanism, a detent percussion mechanism, a rotary percussion mechanism, or a hammer percussion mechanism.

[0010] The drive motor has the drive shaft. The drive shaft is mounted in the housing by means of at least one drive shaft bearing. The drive motor can drive the gear box, the impact mechanism and / or the tool holder by means of the drive shaft. The drive shaft bearing can be designed, for example, as a ball bearing, a rolling bearing or a plain bearing. The drive shaft bearing can be arranged at an end of the drive motor facing the tool holder. The drive shaft bearing can be arranged, in particular axially, between the gear box and the drive motor. In addition, a further drive shaft bearing can be provided for supporting the drive shaft. The further drive shaft bearing can be arranged at the end of the drive motor facing away from the tool holder. The further drive shaft bearing can be designed, for example, as a ball bearing, a rolling bearing or a plain bearing. The hand-held power tool can have a tool axis.In this case, a rotational axis of the drive shaft can form the tool axis. In particular, "axial" should be understood as essentially parallel to the tool axis. Whereas "radial" should be understood as essentially perpendicular to the tool axis.

[0011] The gearbox has a gearbox cover that closes the gearbox at least in sections. The gearbox cover can be arranged axially between the tool holder and the drive motor. Furthermore, the gearbox cover can be arranged axially between the at least one planetary stage and the drive motor. The gearbox cover can accommodate the ring gear of the gearbox, in particular the planetary gear. The ring gear and the gearbox cover can be connected to one another in a form-fitting, force-fitting and / or material-fitting manner. The hand-held power tool can have a torque coupling. The torque coupling can be adjustable, whereby the user can set the desired torque using an adjusting ring. The torque coupling is designed such that it triggers when the desired torque is reached. The torque coupling can be arranged axially between the tool holder and the gearbox.The gear cover can be arranged, in particular axially, between the torque coupling and the drive motor. The handheld power tool can have a spindle locking device. The spindle locking device is designed to lock the tool holder when torques are applied externally to the tool holder.

[0012] In addition, the handheld power tool comprises a power supply, wherein the power supply is provided for battery operation using rechargeable batteries, in particular handheld power tool battery packs, and / or for mains operation. In a preferred embodiment, the power supply is designed for battery operation. Within the scope of the present invention, a "handheld power tool battery pack" is understood to mean a combination of at least one battery cell and a battery pack housing. The handheld power tool battery pack is advantageously designed to supply energy to commercially available battery-operated handheld power tools. The at least one battery cell can, for example, be a Li-Ion battery cell with a nominal voltage of 3.6 V. For example, the handheld power tool battery pack can comprise up to ten battery cells, although a different number of battery cells is also conceivable.An embodiment as a battery-operated hand tool as well as operation as a mains-operated hand tool are sufficiently known to the person skilled in the art, which is why the details of the power supply are not discussed here.

[0013] The handheld power tool has the control unit at least for controlling the drive motor. For this purpose, the control unit is connected to the drive motor via signals. The control unit is arranged in the housing. For example, the control unit can be arranged in a handle of the handheld power tool, in an area of ​​a power supply interface or, in particular radially, between the drive shaft and the handset. The control unit board can have electronic components for control and / or signal processing, such as capacitors, transistors, resistors and / or at least one processor or microprocessor. The control unit can have a sensor board. The sensor board can be connected to the control unit board for sensor-controlled commutation of the drive motor. The sensor board and the control unit board can be connected to one another, for example, by cable.For example, the sensor board and the control unit board can be connected to one another by means of at least one plug and one coupling. The sensor board can be arranged in the housing between the drive motor and the tool holder. The sensor board can have at least one sensor element, such as a Hall sensor. For example, three sensor elements can be provided on the sensor board. The control unit is designed to control and / or regulate the drive motor depending on signals from the sensor board. The control unit can receive the signals from the sensor board and switching signals from the handset. It is conceivable that the control unit processes the switching signals from the handset before the control unit forwards the switching signals to the drive unit for control.The control unit is designed to process the signals from the sensor board and the switching signals in such a way that the drive unit, in particular the drive motor, can be controlled and / or regulated as needed. The control unit can comprise at least one microprocessor or one microcontroller.

[0014] The handheld power tool has the workstation lighting unit for illuminating the workstation. The workstation lighting is designed to illuminate the workstation such that a user can carry out work at the workstation in an illuminated manner. The workstation can be arranged at least partially in the housing. The workstation lighting unit is arranged at an angle to the control unit circuit board in the housing. The workstation lighting unit and the control unit circuit board are at an angle to one another, which can be in an angular range of 5° up to and including 90°. The workstation lighting unit can be arranged radially, in particular to the tool axis, offset from the tool holder in order to reduce, in particular to minimize, shading in front of the tool holder.

[0015] In one embodiment of the handheld power tool, the workstation lighting comprises a workstation lighting board arranged at an angle to the control unit board. The workstation lighting unit comprises the workstation lighting board, at least one light source, such as an LED, and / or at least one light-guiding element, such as a lens or a light guide. The light-guiding element is designed to guide emitted light from the light source towards the workstation. The light source can bear against the light-guiding element. The light source can be arranged on the workstation lighting board and be mechanically and / or electrically connected to it. It is possible for a plurality of light sources and / or a plurality of light-guiding elements to be provided, such as two or three or more than three.The workstation lighting board and the control unit board can be arranged at an angle of 5° to 90° relative to each other. The control unit board can be arranged radially, in particular to the tool axis, between the drive shaft or the tool axis and the workstation lighting unit, in particular the light source. The light source can be arranged radially to the tool axis between the control unit board and the handset.

[0016] In one embodiment of the handheld power tool, the workstation lighting unit rests at least partially against the control unit circuit board. The workstation lighting unit can rest at least partially against the control unit circuit board via the workstation lighting circuit board. It is possible for the workstation lighting unit to rest against the control unit circuit board over a large area, for example, across the entire width of the control unit circuit board. The workstation lighting unit and the control unit circuit board can be soldered to one another, plugged into one another, clamped to one another, or connected by means of a plug and a coupling. This avoids the need for additional cables or other transitional connections.

[0017] In one embodiment of the handheld power tool, the control unit board is arranged in the housing substantially parallel to the drive shaft. The control unit board can have an angle in an angular range of up to 15° relative to the drive shaft. The control unit board can be arranged in the housing tilted relative to the tool axis. The control unit board can be received and arranged in the housing by at least one receptacle.

[0018] In one embodiment of the handheld power tool, the workstation lighting unit has at least one contact element for contacting the control unit circuit board. The contact element can, for example, be at least one shoulder, a step, a web, an edge, or a projection. It is possible for a plurality of contact elements to be provided, such as two, three, or four. It is also conceivable for the light source to be arranged substantially between two contact elements. It is also possible for two contact elements to be arranged opposite one another. The contact element can be arranged at least partially on the control unit circuit board. The contact element is designed such that stability is increased when connecting the control unit circuit board to the workstation lighting circuit board.The support element rests against the control unit board to increase the stability of the workstation lighting unit and prevent tipping. Furthermore, the support element provides a depth stop for the workstation lighting board.

[0019] In one embodiment of the handheld power tool, the control unit circuit board has a workstation lighting receptacle designed to at least partially accommodate the workstation lighting unit. The workstation lighting receptacle can be designed in the manner of a slot, an opening, a recess, a shaft, a pot, a bowl, a web, a coupling, a projection, or an edge. The workstation lighting receptacle can be slot-like, round, elliptical, or polygonal. The control unit circuit board can form the workstation lighting receptacle so that they are integral. The workstation circuit board can be electrically and / or signal-connected to the control unit circuit board so that the workstation lighting board transmits energy from the power supply to the workstation lighting unit, in particular the light source.

[0020] In one embodiment of the handheld power tool, the workstation lighting unit has at least one connecting element for connection to the control unit circuit board. The connecting element for the control unit circuit board can be designed, for example, in the manner of a plug, a pin, a web, a pin, or a tenon. The connecting element is designed to connect the workstation lighting unit to the control unit circuit board for signaling purposes. The connecting element can, for example, penetrate into the control unit circuit board or at least partially pass through it. The connecting element for the control unit circuit board is designed to form a mechanical and / or electrical connection with the workstation lighting receptacle in order to connect the workstation lighting circuit board and the control unit circuit board to one another.The control unit board and the workstation lighting board can, for example, be plugged, soldered or glued together.

[0021] In one embodiment of the handheld power tool, the control unit has at least one orientation element designed to align the workstation lighting unit relative to the control unit circuit board. The control unit circuit board can form the orientation element. The orientation element can also align the workstation lighting circuit board relative to the tool axis. The orientation element can be designed, for example, in the manner of a slot, an opening, a cup, a coupling, a plug, a groove, a web, a projection, a mandrel, an edge, or a recess. The orientation element and the workstation lighting receptacle can be integrally formed. It is also possible for the workstation lighting receptacle to be formed by the workstation lighting circuit board. Furthermore, it is possible for the orientation element to be formed by the workstation lighting circuit board.

[0022] In one embodiment of the handheld power tool, the orientation element is designed to arrange the workstation lighting unit transversely to the drive shaft. The orientation element arranges the workstation lighting board transversely, in particular substantially perpendicularly, to the drive shaft or the tool axis. If a plurality of light sources is provided, the orientation element can also arrange the plurality of light sources transversely to the tool axis, wherein an emission direction of the light sources can be substantially parallel to the tool axis.

[0023] In one embodiment of the handheld power tool, the orientation element is designed to position the workstation lighting unit substantially parallel to the drive shaft. The orientation element can position the workstation lighting board substantially parallel to the drive shaft or the tool axis. Short description of the drawings

[0024] The invention is explained below using preferred embodiments. The drawings show: Fig. 1 a schematic view of a hand-held power tool according to the invention; Fig. 2 a section of a longitudinal section of the hand tool; Fig. 3 a perspective view of a first embodiment of a control unit with a workstation lighting unit of the hand-held power tool; Fig. 4 two cross-sectional views of a second embodiment of the control unit with the workstation lighting unit of the hand-held power tool; Description of the embodiments

[0025] Fig. 1 shows a handheld power tool 100 according to the invention, which is designed as an exemplary screwdriver 100. The handheld power tool 100 comprises an output shaft 124 and a tool holder 150. The handheld power tool 100 has a housing 110 with a handle 126. The handheld power tool 100 can be mechanically and electrically connected to a power supply for battery operation to form a mains-independent power supply, so that the handheld power tool 100 is designed as a battery-operated handheld power tool 100. A handheld power tool battery pack 130 serves as the power supply here. However, the present invention is not limited to battery-operated handheld power tools, but can also be applied to mains-dependent, i.e., mains-operated, handheld power tools.

[0026] The housing 110 comprises a drive unit 111. The drive unit 111 is arranged in the housing 110. The drive unit 111 comprises an electrically commutated drive motor 114, which is supplied with power by the handheld power tool battery pack 130, and a gear 118. The drive motor 114 comprises a stator 165 and a rotor 167 with rotor magnets 168, see also Fig. 2 The gear 118 is designed as at least one planetary gear 163. The drive motor 114 is configured such that it can be actuated, for example, via a manual switch 128, so that the drive motor 114 can be switched on and off. Advantageously, the drive motor 114 is electronically controllable and / or regulated so that reversing operation and a desired rotational speed can be achieved. For reversing operation, the handheld power tool 100 has a rotation direction switching element 121, which is designed as a rotation direction switch. The rotation direction switching element 121 is designed to switch the drive motor 114 between a clockwise rotation direction and a counterclockwise rotation direction. The structure and operation of a suitable drive motor are well known to those skilled in the art, which is why they will not be discussed in detail here.

[0027] The gear 118 is connected to the drive motor 114 via a drive shaft 116. The drive shaft 116 is mounted in the housing 110 by means of a drive shaft bearing 180 and a further drive shaft bearing 188. The gear 118 is provided to convert a rotation of the drive shaft 116 into a rotation between the gear 118 and the tool holder 150. The gear 118 has a gear housing 119 arranged in the housing 110. The gear 118 comprises at least one ring gear 129, planet gears 192, and planet carrier 194, wherein the planet carrier 194 each rotatably supports the planet gears 192. The planet gears 192 engage the ring gear 129. Furthermore, the gear 118 has a gear cover 136, which closes the gear 118 at least in sections. See also Fig. 2 The gear cover 136 accommodates the ring gear 129 of the gear 118. The gear cover 136 is pot-shaped, for example, see Fig. 2 . The transmission 118 is designed here as a switchable transmission 118 which can be switched between at least two gear stages by means of at least one gear switching element 196, see also Fig. 2 . The gear shifting element 196 comprises a gear shifter 197, a shifting clasp 198, and a switching ring gear 199. The switching clasp 198 is designed to engage with the switching ring gear 199 and to axially displace it. The hand-held power tool 100 here comprises, for example, a torque coupling 191 and a spindle locking device 193. The torque coupling 191 is adjustable by means of an adjusting ring 195, see also Fig. 2 The torque coupling 191 is arranged axially between the tool holder 150 and the gear box 118. The spindle locking device 193 is arranged axially between the tool holder 150 and the gear box 118. Furthermore, the handheld power tool 100 comprises a fan wheel 190. The fan wheel 190 is provided to generate an air flow in the housing 110. The handheld power tool 100 comprises a handheld power tool axis 102, wherein a rotational axis of the drive shaft 116 forms the handheld power tool axis 102.

[0028] The tool holder 150 is provided on the output shaft 124. The tool holder 150 is preferably formed and / or formed on the output shaft 124. The tool holder 150 is preferably arranged in an axial direction 132 pointing away from the drive unit 111. The tool holder 150 is designed here as a hexagon socket, in the manner of a bit holder, which is intended to receive an insert tool 140. In Fig. 2 Only the output shaft 124 is shown without the tool holder 150. The insert tool is shaped like a screwdriver bit with a polygonal external coupling 142. The type of screwdriver bit, for example, HEX type, is well known to those skilled in the art. However, the present invention is not limited to the use of HEX screwdriver bits; rather, other tool holders that appear appropriate to those skilled in the art can also be used, such as HEX drills, SDS quick insert tools, sockets, or round-shank drill chucks. In addition, the structure and function of a suitable bit holder are well known to those skilled in the art.

[0029] The hand-held power tool 100 has a control unit 270 at least for controlling the drive unit 111, in particular the drive motor 114. The control unit 270 comprises a control unit board 272 and a sensor board 274 for sensor-controlled commutation of the electrically commutated drive motor 114, see also Fig. 2 Both the control unit board 272 and the sensor board 274 are arranged in the housing 110. The sensor board 274 is arranged axially between the drive motor 114 and the gear 118. The control unit board 272 is arranged radially between the drive unit 111 and the rotation direction selector switch 121. The sensor board 274 and the control unit board 272 are connected to each other by a cable, with a cabling in Fig. 2 is not shown. The sensor board 274 comprises Hall sensors. The housing 110 also comprises a power supply holding device 160. The power supply holding device 160 accommodates the handheld power tool battery pack 130 and forms a base 162 with a base. The handheld power tool battery pack 130 can be detached from the power supply holding device 160 without tools. The housing 110 also has the handle 126 and the power supply holding device 160. The handle 126 can be grasped by a user. In one embodiment, the power supply holding device 160 is arranged on the handle 126. The handheld power tool 100 can be parked by means of the base 162.

[0030] The hand-held power tool 100 comprises a workstation lighting unit 200 for illuminating a workstation, wherein the workstation lighting unit 200 is arranged at an angle to the control unit board 272, see also Fig. 2 bis 4 . The workstation lighting unit 200 is at least partially arranged in the housing 110. The workstation lighting unit 200 and the control unit board 272 encompass an angle in an angular range of 5° up to and including 90°, see also Fig. 2 bis 4 .

[0031] Fig. 2 shows a detail 400 of a longitudinal section of the handheld power tool 100. The control unit 270 and the workstation lighting unit 200 are connected to one another for signaling purposes, although cabling is not shown. The workstation lighting unit 200 comprises a workstation lighting board 202. The workstation lighting board 202 is arranged at an angle to the control unit board 272. The workstation lighting unit 200 further comprises a light source 210, such as an LED, and a light-guiding element 212, such as a lens. The light-guiding element 212 is intended to guide emitted light from the light source 210 toward the workstation. The light source 210 is arranged on the workstation lighting board 202, see also Figs. 3 to 5. The light source 210 is mechanically and electrically connected to the workstation lighting board 202.The workstation lighting board 202 and the control unit board 272 are arranged at an angle 204 to each other in an angular range from 5° to 90° inclusive. The light source 210 is arranged radially to the tool axis 102 between the control unit board 272 and the handset 128. The workstation lighting unit 200 rests at least partially against the control unit board 272 via the workstation lighting board 202. The control unit board 272 is arranged substantially parallel to the drive shaft 116 in the housing 110. The angle between the control unit board 272 and the drive shaft is in an angular range of up to 15°. The control unit board 272 is arranged in the housing 110 tilted relative to the tool axis 102. The housing 110 comprises a receptacle 276 for the control unit board 272.The receptacle 276 for the control unit board 272 receives the control unit board 272 at least in a form-fitting manner and arranges the control unit board 272 in the housing 110.

[0032] Fig. 3 shows a perspective view of a first embodiment of the control unit 270 with the workstation lighting unit 200 of the handheld power tool 100, wherein a section 402 is shown. The workstation lighting board 202 and the control unit board 272 are soldered together. The workstation lighting unit 200, in particular the workstation lighting board 202, comprises at least one contact element 220 for contacting the control unit board 272. By way of example, two contact elements 220 shaped as shoulders 222 are formed here. The shoulders 222 each bear against the control unit board 272. The light source 210 is arranged substantially between the shoulders 222, wherein the two shoulders are arranged opposite one another. The control unit board 272 comprises a workstation lighting receptacle 280.The workstation lighting receptacle 280 is provided to at least partially accommodate the workstation lighting unit 200, in particular the workstation lighting circuit board 202. Here, the workstation lighting receptacle 280 is formed as a recess 282. The workstation lighting unit 200 comprises at least one connecting element 230 for connection to the control unit circuit board 272. Here, the connecting element 230 for the control unit circuit board 272 is formed in the manner of a web 232. The connecting element 230 partially engages the control unit circuit board 272. The connecting element 230 is integral with the workstation lighting circuit board 202. The control unit 270 comprises at least one orientation element 290. The orientation element 290 is provided to align the workstation lighting unit 200 relative to the control unit circuit board 272. The control unit board 272 forms the orientation element 290.Here, the orientation element 290 is shaped like a recess 292. The orientation element 290 and the workstation lighting receptacle 280 are integral here. The orientation element 290 is intended to arrange the workstation lighting unit 200 transversely to the drive shaft 116.

[0033] Fig. 4 shows two cross-sectional views of a second embodiment of the control unit 270 with the workstation lighting unit 200 of the handheld power tool 100, wherein the section 402 is shown. The workstation lighting unit 200, in particular the workstation lighting board 202 and the control unit board 272, are soldered together. The contact element 220 is designed here, for example, as two contact webs 224. The contact webs 224 are integral with the workstation lighting board 202. The two contact webs 224 are arranged opposite one another. The light source 210 is arranged essentially between the contact webs 224. The contact webs 224 bear against the control unit board 272. The control unit board 272 includes three openings 284, 286, 288 as the workstation lighting receptacle 280. Two of the openings 284 are elliptical 286 and one of the openings 284 is circular 288.In the second embodiment, three connecting elements 230 are provided, two of the connecting elements 230 being formed as connecting webs 234 and one of the connecting elements 230 being formed as a connecting pin 236. Here, three orientation elements 290 are formed, two of the orientation elements 290 being elliptical 294 and one of the orientation elements 290 being circular 296. The orientation elements 290, 294, 296 and the workstation lighting receptacle 280, 284, 246, 288 are integrally formed. The orientation elements 290 position the workstation lighting unit 200 transversely to the drive shaft 116. The connecting pin 236 is arranged between the two contact webs 224. Furthermore, the connecting pin is arranged between the two connecting webs 234. Furthermore, a further contact element 226 is formed here, which is designed as a contact shoulder 228. The housing 110 has a projection 161 against which the contact shoulder 228 can rest. Fig. 4a shows a front view of the cross-sectional view, where Fig. 4b shows a perspective view of the cross-sectional view.

Claims

1. Hand-held power tool (100) with a housing (110), with an electrically commutated drive motor (114) which has a drive shaft (116) and is arranged substantially within the housing (110), with a control unit (270) at least for controlling the drive motor (114), which has a control unit board (272), and with a workstation lighting unit (200) for illuminating a workstation, characterized in that the workstation lighting unit (200) is arranged at an angle to the control unit board (272).

2. Hand tool (100) according to claim 1, characterized in that the workstation lighting (200) has a workstation lighting board (202) which is arranged at an angle to the control unit board (272).

3. Hand tool (100) according to claim 1 or 2, characterized in that the workstation lighting unit (200) is at least partially in contact with the control unit board (272).

4. Hand tool (100) according to one of claims 1 to 3, characterized in that the workstation lighting unit (200) has at least one contact element (220) for contact with the control unit board (272).

5. Hand tool (100) according to one of the preceding claims, characterized in that the control unit board (272) has a workstation lighting receptacle (280) which is designed to at least partially accommodate the workstation lighting unit (200).

6. Hand tool (100) according to one of the preceding claims, characterized in that the workstation lighting unit (200) has at least one connecting element (230) for connection to the control unit board (272).

7. Hand tool (100) according to one of the preceding claims, characterized in thatthe control unit (270) has at least one orientation element (290) which is designed to align the workstation lighting unit (200) relative to the control unit board (272).

8. Hand tool (100) according to claim 7, characterized in that the orientation element (290) is designed to arrange the workstation lighting unit (200) transversely to the drive shaft (116).

9. Hand tool (100) according to claim 7, characterized in that the orientation element (290) is designed to arrange the workstation lighting unit (200) substantially parallel to the drive shaft (116).

10. Hand tool (100) according to one of the preceding claims, characterized in that the control unit board (272) is arranged substantially parallel to the drive shaft (116) in the housing (110).

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