Hand-held power tool

By arranging the working position lighting unit with the control unit circuit board at an angle in a hand-held tool, the problem of shadow during working position lighting is solved, and manufacturing costs are reduced, achieving better lighting effects and economical design.

CN120190781APending Publication Date: 2025-06-24ROBERT BOSCH GMBH
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Patent Information

Application Number
CN202411887748.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2023-12-21
Filing Date
2024-12-20
Publication Date
2025-06-24

AI Technical Summary

Technical Problem

Existing handheld tool machines are prone to shadows when lighting at the working position, which affects the lighting effect and is costly to high manufacturing.

Method used

By arranging the working position lighting unit in the housing of the handheld tool at an angle to the control unit circuit board, shadows are reduced and a cost-saving design method is adopted.

Benefits of technology

It realizes reducing shadows when lighting at the working position, improving lighting effects, and reducing manufacturing costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to a hand-held power tool (100), comprising a housing (110), an electrically commutated drive motor (114), which has a drive shaft (116) and is arranged substantially in the housing (110), a control unit (270) for controlling the drive motor (114), which control unit has a control unit circuit board (272), and a working position illumination unit (200) for illuminating the working position. According to the invention, the working position lighting unit (200) is arranged at an angle to the control unit circuit board (272).
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Description

Field of the Invention

[0001] The present invention relates to a hand-held power tool. Background Art

[0002] A hand-held power tool having a drive motor, a transmission, and a control unit is known from DE 10 2018 206 876 A1. Summary of the Invention

[0003] The present invention starts from a hand-held power tool having a housing, an electronically commutated drive motor having a drive shaft and substantially arranged within the housing, at least a control unit for controlling the drive motor, the control unit having a control unit circuit board, and a working position lighting unit for illuminating a working position. It is proposed that the working position lighting unit be arranged at an angle to the control unit circuit board.

[0004] The present invention provides a hand-held power tool with improved robustness. In addition, increased illumination of the working position can be achieved while reducing shadows, in particular minimizing the shadows. Additionally, the present invention reduces the manufacturing cost.

[0005] The hand-held power tool can be configured as an electrically operated hand-held power tool. The electrically operated hand-held power tool can herein be configured as a mains-operated or battery-operated hand-held power tool. For example, the hand-held power tool can be configured as a screwdriver, a drill screwdriver, a rotary hammer screwdriver, a hammer, a rotary hammer, or an impact drill screwdriver.

[0006] The housing of the hand-held power tool is configured for at least partially receiving the drive motor, the control unit, the control unit circuit board, and the working position lighting unit. The housing can be configured as a housing shell having two half-shells.

[0007] The hand-held power tool can have a tool receiving part. The tool receiving part can be configured as an internal tool receiving part, such as a bit receiving part and / or an external tool receiving part, such as a socket receiving part. It is also conceivable that the tool receiving part is configured as a drill chuck. The tool receiving part can receive an inserted tool, such as a screwdriver bit or a socket wrench, such that the user can establish a threaded connection between a fastening element and a fastening carrier.

[0008] The hand-held power tool has a drive unit. The drive unit includes an electronically commutated drive motor and a transmission. The drive motor can in particular be configured as at least one electric motor. The transmission can be configured as at least one planetary gear set, where the planetary gear set can for example be switchable. The planetary gear set can have at least one planet carrier and planet gears. Furthermore, the transmission, in particular the planetary gear set, can have at least one ring gear. In a switchable transmission, it is possible to switch between at least two gears by means of at least one shifting element, in particular a shift switch. The drive motor is configured such that it can be operated by means of a manual switch. If the user operates the manual switch, the drive motor is switched on and the hand-held power tool is put into operation. If the user no longer operates the manual switch accordingly, the drive motor is switched off. Preferably, the drive motor can be electronically controlled and / or adjusted such that reverse operation and a pre-given rotational speed for the desired rotational speed can be achieved. In reverse operation, the drive motor can be switched between a clockwise rotational direction and a counterclockwise rotational direction. In order to switch the drive motor in reverse operation, the hand-held power tool can have a rotational direction switching element, in particular a rotational direction switch.

[0009] The hand-held power tool can have an impact mechanism. The impact mechanism generates high torque peaks during operation in order to loosen fixed connection devices or for fixing connection devices or for drilling. The impact mechanism can be connected to the drive motor by means of the transmission. The impact mechanism can for example be configured as a rotary impact mechanism, an intermittent impact mechanism, a rotational impact mechanism or a hammering mechanism.

[0010] The drive motor has a drive shaft. The drive shaft is supported in the housing by means of at least one drive shaft bearing. The drive motor can drive the transmission, the impact mechanism and / or the tool receptacle by means of the drive shaft. The drive shaft bearing can for example be configured as a ball bearing, a rolling bearing or a sliding bearing. The drive shaft bearing can be arranged at the end of the drive motor facing the tool receptacle. The drive shaft bearing can in particular be arranged axially between the transmission and the drive motor. Furthermore, an additional drive shaft bearing can be provided for supporting the drive shaft. The additional drive shaft bearing can be arranged at the end of the drive motor facing away from the tool receptacle. The additional drive shaft bearing can for example be configured as a ball bearing, a rolling bearing or a sliding bearing. The hand-held power tool can have a tool axis. Here, the rotational axis of the drive shaft can form the tool axis. In particular, "axial" should be understood as being substantially parallel to the tool axis. And "radial" should be understood as being substantially perpendicular to the tool axis.

[0011] The drive unit has a drive unit cover which at least sectionally encloses the drive unit. The drive unit cover can be axially arranged between the tool receptacle and the drive motor. Additionally, the drive unit cover can be axially arranged between at least one planetary stage and the drive motor. The drive unit cover can receive the hollow wheel of the drive unit, in particular of a planetary drive. Here, the hollow wheel and the drive unit cover can be connected to one another form-fittingly, force-fittingly and / or material-fittingly. The hand-held power tool can have a torque clutch. The torque clutch can be configured to be adjustable, wherein the user can adjust the desired torque with the aid of an adjusting ring. The torque clutch is configured such that it is triggered when the desired torque is reached. The torque clutch can be axially arranged between the tool receptacle and the drive unit. The drive unit cover can in particular be axially arranged between the torque clutch and the drive motor. The hand-held power tool can have a spindle locking device. The spindle locking device is configured to lock the tool receptacle in the presence of a torque externally applied to the tool receptacle.

[0012] Additionally, the hand-held power tool includes a power supply device, wherein the power supply device is configured to operate by means of a battery, in particular a battery of a hand-held power tool battery pack, and / or for mains operation. In a preferred embodiment, the power supply device is configured for battery operation. Within the scope of the present invention, a "hand-held power tool battery pack" is understood to be a combination of at least one battery cell and a battery pack housing. The hand-held power tool battery pack is advantageously configured for the energy supply of commercially available battery-operated hand-held power tools. At least one battery cell is for example configured as a lithium-ion battery cell with a rated voltage of 3.6 V. For example, the hand-held power tool battery pack can include at most ten battery cells, wherein different numbers of battery cells can also be considered. Embodiments of battery-operated hand-held power tools as well as mains-operated hand-held power tools are well known to those skilled in the art, and therefore the details of the power supply device are not described here.

[0013] The hand-held power tool has at least a control unit for controlling the drive motor. For this purpose, the control unit is connected to the drive motor in a signal-technical manner. The control unit is arranged in the housing. For example, the control unit can be arranged in the handle of the hand-held power tool, in the region of the energy supply interface, or in particular radially between the drive shaft and the manual switch. The control unit circuit 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 circuit board. The sensor circuit board can be connected to the control unit circuit board for sensor-controlled commutation of the drive motor. The sensor circuit board and the control unit circuit board can be connected to each other, for example, in a wired manner. For example, the sensor circuit board and the control unit circuit board can be connected to each other by means of at least one plug and coupler. The sensor circuit board can be arranged in the housing between the drive motor and the tool receptacle. The sensor circuit board can have at least one sensor element, such as a Hall sensor. For example, three sensor elements can be provided on the sensor circuit board. The control unit is configured to control and / or regulate the drive motor based on the signals from the sensor circuit board. The control unit can receive signals from the sensor circuit board and the switching signals of the manual switch. It can be considered that the control unit processes the switching signals of the manual switch before passing the switching signals to the drive unit for control. The control unit is configured to process the signals from the sensor circuit board and the switching signals such that the drive unit, in particular the drive motor, can be controlled and / or regulated as required. The control unit can include at least one microprocessor or microcontroller.

[0014] The hand-held power tool has a working position lighting device for illuminating the working position. The working position lighting device is configured to illuminate the working position such that the user can work illuminated at the working position. The working position can be arranged at least partially in the housing. The working position lighting unit is arranged in the housing at an angle to the control unit circuit board. Here, the working position lighting unit and the control unit circuit board have an angle relative to each other, which can be in the angular range of 5° to 90° (inclusive). The working position lighting device can be arranged, in particular, radially with respect to the tool axis and offset from the tool receptacle in order to reduce, in particular, minimize the shadow in front of the tool receptacle.

[0015] In an embodiment of a hand-held power tool, the working position lighting device has a working position lighting circuit board arranged at an angle to the control unit circuit board. The working position lighting unit has a working position lighting circuit 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 body. The light guiding element is configured to guide the light emitted by the light source in the direction of the working position. The light source can be abutted against the light guiding element. The light source can be arranged on the working position lighting circuit board and be mechanically and / or electrically connected to the working position lighting circuit board. A plurality of light sources and / or a plurality of light guiding elements can be provided, for example, two or three or more than three each. The working position lighting circuit board and the control unit circuit board can be arranged in an angular range of 5° to 90° (inclusive) relative to each other. The control unit circuit board can be arranged radially relative to the tool axis, in particular between the drive shaft or the tool axis and the working position lighting device, in particular the light source. The light source can be arranged radially relative to the tool axis between the control unit circuit board and the manual switch.

[0016] In an embodiment of a hand-held power tool, the working position lighting unit at least partially abuts against the control unit circuit board. The working position lighting unit can at least partially abut against the control unit circuit board by means of the working position lighting circuit board. The working position lighting unit can abut against the control unit circuit board over a large area, for example, over the entire width of the control unit circuit board. The working position lighting unit and the control unit circuit board can be welded to each other, plugged into each other, clamped to each other, clamped together, or connected by means of a plug and a coupler. This avoids the need for additional cables or other intermediate connections.

[0017] In an embodiment of a hand-held power tool, the control unit circuit board is arranged in the housing substantially parallel to the drive shaft. The control unit circuit board can have an angle within an angular range of at most 15° relative to the drive shaft. The control unit circuit board can be arranged obliquely relative to the tool axis in the housing. The control unit circuit board can be received and arranged in the housing by means of at least one receiving portion.

[0018] In one embodiment of a hand-held power tool, the work position lighting unit has at least one abutting element for abutting against the control unit circuit board. The abutting element can be configured, for example, as at least one shoulder, flange, tab, edge or protrusion. A plurality of abutting elements can be provided, for example two, three or four. It can also be considered that the light source is arranged substantially between two abutting elements. The two abutting elements can also be arranged opposite each other. The abutting element can be arranged at least partially on the control unit circuit board. The abutting element is configured such that the stability is increased when the control unit circuit board is connected to the work position lighting circuit board. Here, the abutting element abuts against the control unit circuit board in order to increase the stability of the work position lighting unit and to prevent tipping over. In addition, the abutting element enables a depth stop for the work position lighting circuit board.

[0019] In one embodiment of a hand-held power tool, the control unit circuit board has a work position lighting receiving portion configured to at least partially receive the work position lighting unit. The work position lighting receiving portion can be configured in the form of a slot, opening, notch, channel, receptacle, bowl, tab, coupler, protrusion or edge. The work position lighting receiving portion can be shaped in a slotted, circular, oval or polygonal manner here. The control unit circuit board can form the work position lighting receiving portion such that they are integral. The work position circuit board can be electrically and / or signal-technologically connected to the control unit circuit board such that the work position lighting circuit board conducts energy from the energy supply device to the work position lighting unit, in particular the light source.

[0020] In one embodiment of a hand-held power tool, the work position 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 configured, for example, in the form of a plug, pin, tab, mandrel or bolt. The connecting element is configured to connect the work position lighting unit to the control unit circuit board signal-technologically. The connecting element can, for example, penetrate or at least partially penetrate into the control unit circuit board. The connecting element for the control unit circuit board is configured to form a mechanical and / or electrical connection with the work position lighting receiving portion in order to connect the work position lighting circuit board and the control unit circuit board to each other. The control unit circuit board and the work position lighting circuit board can, for example, be plugged, soldered or glued to each other.

[0021] In one embodiment of a hand-held power tool, the control unit has at least one orientation element configured to orient the work position lighting unit relative to the control unit circuit board. The control unit circuit board can form the orientation element. The orientation element can also orient the work position lighting circuit board relative to the tool axis. The orientation element can be configured, for example, in the form of a slit, an opening, a receptacle, a coupler, a plug, a groove, a tab, a protrusion, a mandrel, an edge or a notch. The orientation element and the work position lighting receptacle can be integral. The work position lighting receptacle can also be formed by the work position lighting circuit board. The orientation element can also be formed by the work position lighting circuit board.

[0022] In one embodiment of a hand-held power tool, the orientation element is configured to arrange the work position lighting unit transversely to the drive axis. The orientation element arranges the work position lighting circuit board transversely to, in particular, substantially perpendicular to the drive axis or the tool axis. If a plurality of light sources are provided, the orientation element can also arrange the plurality of light sources transversely to the tool axis, wherein an emission direction of one of the light sources can be substantially parallel to the tool axis.

[0023] In one embodiment of a hand-held power tool, the orientation element is configured to arrange the work position lighting unit substantially parallel to the drive axis. The orientation element can arrange the work position lighting circuit board substantially parallel to the drive axis or the tool axis. Description of the Drawings

[0024] The present invention will be described below based on preferred embodiments. The drawings show below:

[0025] Figure 1 : A schematic view of a hand-held power tool according to the present invention;

[0026] Figure 2 : A partial longitudinal section of a hand-held power tool;

[0027] Figure 3 : A perspective view of a first embodiment of a control unit with a work position lighting unit of a hand-held power tool;

[0028] Figure 4: Two cross-sectional views of a second embodiment of a control unit with a work position lighting unit of a hand-held power tool. Detailed Description of the Embodiments

[0029] Figure 1There is shown a hand-held power tool 100 according to the invention, which is configured as an exemplary screwdriver 100. The hand-held power tool 100 includes an output shaft 124 and a tool receptacle 150. The hand-held power tool 100 includes a housing 110 having a handle 126. The hand-held power tool 100 can be mechanically and electrically connected to an energy supply device for battery operation in order to be powered independently of the power grid, such that the hand-held power tool 100 is configured as a battery-operated hand-held power tool 100. The hand-held power tool battery pack 130 is used here as the energy supply device. However, the invention is not limited to battery-operated hand-held power tools, but can also be applied to hand-held power tools that are dependent on the power grid, i.e., grid-operated hand-held power tools.

[0030] The housing 110 includes a drive unit 111 here. The drive unit 111 is arranged in the housing 110. The drive unit 111 includes an electronically commutated drive motor 114 powered by the hand-held power tool battery pack 130 and includes a transmission unit 118. The drive motor 114 includes a stator 165 and a rotor 167 having rotor magnets 168, see also Figure 2 . The transmission unit 118 is configured as at least one planetary gear 163. The drive motor 114 is designed such that it can be operated, for example, by a manual switch 128, such that the drive motor 114 can be switched on and off. Advantageously, the drive motor 114 can be electronically controlled and / or regulated such that reverse operation and a desired rotational speed can be achieved. For reverse operation, the hand-held power tool 100 has a rotation direction switching element 121, which is configured as a rotation direction switch. The rotation direction switching element 121 is configured to switch the drive motor 114 between a clockwise rotation direction and a counterclockwise rotation direction. The structure and mode of operation of a suitable drive motor are well known to those skilled in the art, and thus will not be discussed in detail here.

[0031] The transmission 118 is connected to the drive motor 114 via a drive shaft 116. The drive shaft 116 is supported in the housing 110 by a drive shaft bearing 180 and another drive shaft bearing 188. The transmission 118 is arranged to convert the rotation of the drive shaft 116 into rotation between the transmission 118 and the tool receptacle 150. The transmission 118 has a transmission housing 119, which is arranged in the housing 110. The transmission 118 includes at least one annulus 129, planet gears 192, and a planet carrier 194, wherein the planet carrier 194 rotatably supports the planet gears 192 respectively. The planet gears 192 engage into the annulus 129. In addition, the transmission 118 has a transmission cover 136, which at least partially encloses the transmission 118, see also Figure 2 . The transmission cover 136 receives the annulus 129 of the transmission 118. The transmission cover 136 is formed, for example, in a pot shape, seeFigure 2 The transmission 118 is configured here as a switchable transmission 118, which can be switched between at least two gears by means of at least one shifting element 196, see also Figure 2 The shifting element 196 includes a shift switch 197, a switching catch 198 and a switching hollow wheel 199. The switching catch 198 is configured to engage into the switching hollow wheel 199 and axially displace the switching hollow wheel. The hand-held power tool 100 includes here, for example, a torque clutch 191 and a spindle locking device 193. The torque clutch 191 is adjustably configured by means of an adjusting ring 195, see also Figure 2 The torque clutch 191 is axially arranged between the tool receptacle 150 and the transmission 118. The spindle locking device 193 is axially arranged between the tool receptacle 150 and the transmission 118. The hand-held power tool 100 also includes a fan wheel 190. The fan wheel 190 is provided for generating an air flow in the housing 110. The hand-held power tool 100 includes a hand-held power tool axis 102, wherein the rotational axis of the drive shaft 116 forms here the hand-held power tool axis 102.

[0032] The tool receptacle 150 is provided on the output shaft 124. Preferably, the tool receptacle 150 is formed and / or configured on the output shaft 124. Preferably, the tool receptacle 150 is arranged in the axial direction 132 pointing away from the drive unit 111. The tool receptacle 150 is configured here as an internal hexagon socket receptacle, in the form of a bit holder, which is provided for receiving an insert tool 140. In Figure 2 only the output shaft 124 is shown, without the tool receptacle 150. The insert tool is formed in the form of a screwdriver bit with a multi-edged outer clutch 142. The form of a screwdriver bit, for example the HEX type, is well known to the person skilled in the art, but the invention is not limited to the use of a HEX screwdriver bit, but other tool receptacles that appear meaningful to the person skilled in the art can be used, such as a HEX drill bit, an SDS - quick insert tool, a socket or a round shank drill chuck. Furthermore, the structure and mode of operation of a suitable bit holder are well known to the person skilled in the art.

[0033] The hand-held power tool 100 has a control unit 270 for at least controlling the drive unit 111, in particular the drive motor 114. The control unit 270 includes a control unit circuit board 272 and a sensor circuit board 274 for sensor-controlled commutation of the electrically commutated drive motor 114, see also Figure 2. Both the control unit circuit board 272 and the sensor circuit board 274 are arranged in the housing 110. The sensor circuit board 274 is axially arranged between the drive motor 114 and the transmission 118. The control unit circuit board 272 is radially arranged between the drive unit 111 and the rotation direction selection switch 121. The sensor circuit board 274 and the control unit circuit board 272 are connected to each other by wire, where the wiring is not shown in Figure 2 . The sensor circuit board 274 includes a Hall sensor. In addition, the housing 110 includes an energy holding device 160. The energy holding device 160 receives the handheld power tool battery pack 130 and forms a base 162 with a standing surface here. The handheld power tool battery pack 130 can be detached from the energy holding device 160 without tools. In addition, the housing 110 has a handle 126 and the energy holding device 160. The handle 126 can be grasped by the user. In one embodiment, the energy holding device 160 is arranged on the handle 126. The handheld power tool 100 can be placed by means of the base 162.

[0034] The handheld power tool 100 includes a work position lighting unit 200 for illuminating the work position, where the work position lighting unit 200 is arranged at an angle with respect to the control unit circuit board 272, also see Figure 2 to FIG. 4. The work position lighting unit 200 is at least partially arranged in the housing 110. The work position lighting unit 200 and the control unit circuit board 272 include an angle within the angular range of 5° to 90° (inclusive), also see Figure 2 to FIG. 4.

[0035] Figure 2 A partial view 400 of the longitudinal section of the handheld power tool 100 is shown. The control unit 270 and the work position lighting unit 200 are connected to each other in terms of signal technology, where the wiring is not shown. The work position lighting unit 200 includes a work position lighting circuit board 202. The work position lighting circuit board 202 is arranged at an angle with respect to the control unit circuit board 272. In addition, the work position lighting unit 200 includes a light source 210, such as an LED, and a light guiding element 212, such as a lens. The light guiding element 212 is arranged to guide the light emitted by the light source 210 in the direction of the work position. The light source 210 is arranged on the work position lighting circuit board 202, also see Figures 3 to 4bThe light source 210 is mechanically and electrically connected to the working position illumination circuit board 202. The working position illumination circuit board 202 and the control unit circuit board 272 are arranged at an angle 204 within an angular range of 5° to 90° (inclusive) relative to each other. The light source 210 is arranged radially between the control unit circuit board 272 and the manual switch 128 with respect to the tool axis 102. The working position illumination unit 200 is at least partially abutted against the control unit circuit board 272 by means of the working position illumination circuit board 202. The control unit circuit board 272 is arranged in the housing 110 substantially parallel to the drive shaft 116. Here, the angle between the control unit circuit board 272 and the drive shaft is within an angular range of at most 15°. The control unit circuit board 272 is arranged in the housing 110 inclined with respect to the tool axis 102. The housing 110 includes a receiving portion 276 for the control unit circuit board 272. The receiving portion 276 for the control unit circuit board 272 receives the control unit circuit board 272 at least form-locked and arranges the control unit circuit board 272 in the housing 110.

[0036] Figure 3A perspective view showing a first embodiment of a control unit 270 of a work position lighting unit 200 having a hand-held power tool 100 is shown, with a detail 402 shown. The work position lighting circuit board 202 and the control unit circuit board 272 are soldered to each other. The work position lighting unit 200, in particular the work position lighting circuit board 202, includes at least one abutting element 220 for abutting against the control unit circuit board 272. For example, two abutting elements 220 formed as shoulders 222 are formed here. The shoulders 222 abut against the control unit circuit board 272 respectively. The light source 210 is arranged substantially between the shoulders 222, wherein the two shoulders are arranged opposite each other. The control unit circuit board 272 includes a work position lighting receiving portion 280. The work position lighting receiving portion 280 is arranged to at least partially receive the work position lighting unit 200, in particular the work position lighting circuit board 202. Here, the work position lighting receiving portion 280 is formed as a notch 282. The work position lighting unit 200 includes at least one connecting element 230 for connecting to the control unit circuit board 272. Here, the connecting element 230 for the control unit circuit board 272 is formed in the form of a tab 232. The connecting element 230 is partially engaged into the control unit circuit board 272 here. The connecting element 230 is integral with the work position lighting circuit board 202. The control unit 270 includes at least one orienting element 290. The orienting element 290 is arranged to orient the work position lighting unit 200 relative to the control unit circuit board 272. The control unit circuit board 272 is formed as the orienting element 290. Here, the orienting element 290 is formed in the form of a notch 292. The orienting element 290 and the work position lighting receiving portion 280 are integral here. The orienting element 290 is arranged to arrange the work position lighting unit 200 transversely to the drive shaft 116.

[0037] Figure 4 shows two cross-sectional views of a second embodiment of a control unit 270 of a work position lighting unit 200 with a hand-held power tool 100, showing a detail 402. The work position lighting unit 200, in particular the work position lighting circuit board 202 and the control unit circuit board 272, are soldered to each other. The abutting element 220 is configured here, for example, as two abutting tabs 224. The abutting tabs 224 are integral with the work position lighting circuit board 202. The two abutting tabs 224 are arranged opposite each other. The light source 210 is arranged substantially between the abutting tabs 224. The abutting tabs 224 abut against the control unit circuit board 272. The control unit circuit board 272 includes three openings 284, 286, 288 as a work position lighting receiving portion 280. Two of the openings 286 in the opening 284 are formed as oval and one of the openings 288 in the opening 284 is formed as circular. In the second embodiment, three connecting elements 230 are provided, wherein two of the connecting elements 230 are formed as connecting tabs 234 and one of the connecting elements 230 is formed as a connecting mandrel 236. Here, three orienting elements 290 are formed, wherein two of the orienting elements 290, 294 are formed as oval and one of the orienting elements 290, 296 is formed as circular. The orienting elements 290, 294, 296 and the work position lighting receiving portion 280, 284, 246, 288 are integral. The orienting element 290 arranges the work position lighting unit 200 transversely to the drive shaft 116. The connecting mandrel 236 is arranged between the two abutting tabs 224. In addition, the connecting mandrel 236 is arranged between the two connecting tabs 234. In addition, here another abutting element 226 is formed which is configured as an abutting flange 228. The housing 110 has a protrusion 161 against which the abutting flange 228 can abut. Figure 4a front view showing a cross-section, while Figure 4b perspective view showing a cross-section.

Claims

1. A handheld machine tool (100), 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 controlling at least the drive motor (114), the control unit having a control unit circuit board (272), and a working position lighting unit (200) for illuminating a working position, It is characterized in that The working position lighting unit (200) is arranged at an angle to the control unit circuit board (272).

2. The handheld power tool (100) according to claim 1, characterized in that The working position lighting unit (200) has a working position lighting circuit board (202) arranged at an angle to the control unit circuit board (272).

3. The handheld power tool (100) according to claim 1 or 2, characterized in that: The working position lighting unit (200) at least partially rests on the control unit circuit board (272).

4. The handheld power tool (100) according to any one of claims 1 to 3, characterized in that: The working position lighting unit (200) has at least one abutment element (220) for abutting against the control unit circuit board (272).

5. The hand-held power tool (100) according to any one of the preceding claims, characterized in that The control unit circuit board (272) has a working position lighting receiving portion (280) configured to at least partially receive the working position lighting unit (200).

6. The hand-held power tool (100) according to any one of the preceding claims, characterized in that The working position lighting unit (200) has at least one connecting element (230) for connecting to the control unit circuit board (272).

7. The hand-held power tool (100) according to any one of the preceding claims, characterized in that The control unit (270) has at least one orientation element (290) which is designed to orient the work place lighting unit (200) relative to the control unit circuit board (272).

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

9. The handheld power tool (100) according to claim 7, characterized in that The orientation element (290) is configured to arrange the working position lighting unit (200) substantially parallel to the drive shaft (116).

10. The hand-held power tool (100) according to claim 1, characterized in that The control unit circuit board (272) is arranged in the housing (110) substantially parallel to the drive shaft (116).

Citation Information

Patent Citations

  • machine tool fixture

    DE102018206876A1