EP3389947B1 - Hand-held power tool comprising a gearshift unit - Google Patents

Description

State of the art

The present invention relates to a hand-held power tool with a switchable transmission, to which a gear shift unit for switching between at least two different gear stages is assigned, the gear shift unit having an actuatable shift ring and an actuating unit with a servomotor, the servomotor being designed to activate the actuatable when activated To actuate the switching ring for changing gear between the at least two different gear stages.
Hand-held power tools are known from the prior art which have a drive unit with a drive motor and a switchable transmission, the drive unit being assigned a gear changeover unit for switching the drive unit between at least two different gear stages. The gear shift unit has an actuatable shift ring for gear shifting.
In addition, from the EP 2 848 371 A1 a hand-held power tool with a gear change-over unit is known, which is provided with an actuatable shift ring and an actuating unit with a servomotor. In this case, the servomotor is designed to actuate the actuatable shift ring for gear change between the at least two different gear stages when activated. The document EP 2 404 688 A2 discloses a hand machine tool with a switching ring and a position detection unit.

Disclosure of the invention

The present invention provides a new hand-held power tool with a switchable transmission, to which a gear shift unit for switching between at least two different gear stages is assigned, the gear shift unit having an actuatable shift ring and an actuating unit with a servomotor. The servomotor is designed to actuate the actuatable shift ring for gear change between the at least two different gear stages when activated. A position detection unit is assigned to the actuatable switching ring, which is designed to detect a respectively current switching position of the actuatable switching ring.
The invention thus makes it possible to provide a new hand-held power tool in which the current switching position of the switching ring can be detected safely and reliably. In this way, a current gear stage of the hand-held power tool can be determined in a simple and uncomplicated manner.

According to the invention, the actuatable switching ring can be rotated at least between a first and a second rotational position, the first rotational position corresponding to a first gear stage and the second rotational position to a second gear stage, and the position detection unit being axially displaceable at least between a first and a second detection position, the first Detection position for the detection of the first rotational position and the second detection position for the detection of the second rotational position is formed. The current switching position can thus be detected in a simple manner.
The actuatable switching ring preferably has a link track connected to the position detection unit, which is designed to axially shift the position detection unit when the actuatable switching ring is actuated. This enables an uncomplicated and stable coupling of the actuatable switching ring to the position detection unit.
According to one embodiment, the position detection unit has a guide element and a display element, the guide element engaging at least in sections in the link path and the display element being designed to display a respectively detected switching position of the actuatable switching ring. This enables a simple and robust position detection unit to be provided.

A linear sensor is preferably assigned to the position detection unit and is designed to detect a respectively current detection position of the position detection unit. The current detection position of the position detection unit can thus be detected safely and reliably.

An angle sensor is preferably assigned to the position detection unit for detecting the current switching position of the actuatable switching ring. The current switching position of the switching ring can thus be detected simply and without complications.

The switchable transmission is preferably designed in the manner of a planetary transmission which has a shifting ring gear which can be axially displaced between at least two axial positions, the at least two axial positions being assigned to the at least two different gear stages. A robust and stable switchable transmission can thus be provided.

According to one embodiment, the gear changeover unit has a transmission unit which is designed to transmit actuation of the actuatable shifting ring to the axially displaceable shifting ring gear. A conversion of the rotary movement of the switching ring into an axial displacement of the switching ring gear can thus be made possible in a simple manner.

The transmission unit preferably has at least one axially displaceable shift rod which connects the axially displaceable shift ring gear to the actuatable shift ring, the at least one axially shiftable shift rod being fastened to the axially shiftable shift ring gear and the actuatable shift ring having an actuating link path into which the at least one axially displaceable shift rod engages at least in sections. A stable and robust coupling of the shift ring to the shift ring gear can thus be provided.

According to one embodiment, the transmission unit has an axially displaceable shift rod which can be axially displaced by actuating the actuatable shift ring. Thus, a transmission element can be used with the shift rod are provided, with which a conversion of the rotary movement of the switching ring into an axial displacement of the switching ring gear can be made possible in a simple manner.

The axially displaceable shift rod preferably connects the axially displaceable shifting ring gear to the actuatable shifting ring, the actuatable shifting ring having an actuating link track in which the axially shiftable shifting rod engages at least in sections. A stable and robust coupling of the shift ring to the shift ring gear can thus be provided.

The transmission unit preferably has a switching bracket which is pivotally mounted on the axially displaceable shift rod and the axially displaceable switching ring gear. As an alternative to this, the transmission unit can have a switching bracket which is mounted so as to be axially movable on the axially displaceable shift rod and the axially displaceable switching ring gear. This enables a safe and reliable coupling of the shift rod to the shift ring gear.

An operating unit is preferably provided for setting a gear stage required during operation. Thus, switching between the at least two different gear stages can be initiated in a simple manner.

The control unit preferably has at least one display element for displaying a respectively selected gear stage. Thus, the gear stage that is set in each case can be clearly and clearly recognized by a user via the at least one display element.

According to one embodiment, a first gear step corresponds to a screwing mode and a second gear step corresponds to a drilling or percussion drilling mode. An operating mode of the handheld power tool can thus be set simply and uncomplicatedly via the gear changeover unit.

Brief description of the drawings

Fig. 1

eine perspektivische Ansicht einer Handwerkzeugmaschine mit einer Gangumschalteeinheit und einer Kommunikationsschnittstelle,

Fig. 2

eine teilweise geschnittene Seitenansicht der Handwerkzeugmaschine von Fig. 1 mit einer Antriebseinheit,

Fig. 3

einen Längsschnitt der Antriebseinheit der Handwerkzeugmaschine von Fig. 1 und Fig. 2,

Fig. 4

eine perspektivische Teilansicht der Gangumschalteeinheit von Fig. 2 mit einer Positionsdetektionseinheit,

Fig. 5

eine Explosionsansicht der Positionsdetektionseinheit von Fig. 2 und Fig. 4,

Fig. 6

eine perspektivische Seitenansicht eines der Positionsdetektionseinheit von Fig. 4 und Fig. 5 zugeordneten Schaltrings gemäß einer ersten Ausführungsform,

Fig. 7

eine perspektivische Seitenansicht der Gangumschalteeinheit von Fig. 4 mit einem Schaltring gemäß einer zweiten Ausführungsform,

Fig. 8

eine perspektivische Seitenansicht des Schaltrings von Fig. 7,

Fig. 9

eine perspektivische Teilansicht der Gangumschalteeinheit mit dem Schaltring gemäß der zweiten Ausführungsform,

Fig. 10

eine perspektivische Ansicht eines Systems bestehend aus der Handwerkzeugmaschine von Fig. 1 und einer Bedieneinheit gemäß einer ersten Ausführungsform,

Fig. 11

eine perspektivische Teilansicht der Handwerkzeugmaschine von Fig. 1 mit einer Bedieneinheit gemäß einer zweiten Ausführungsform,

Fig. 12

eine perspektivische Ansicht der Bedieneinheit gemäß der ersten Ausführungsform,

Fig. 13

ein schematisches Diagramm der Handwerkzeugmaschine von Fig. 1 mit der beispielhaften Gangumschalteeinheit und der Kommunikationsschnittstelle,

Fig. 14

eine perspektivische Ansicht einer Gangumschalteeinheit gemäß einer zweiten Ausführungsform,

Fig. 15

eine teilweise Explosionsansicht der Gangumschalteeinheit von Fig. 14,

Fig. 16

eine perspektivische Ansicht der Gangumschalteeinheit von Fig. 14 und Fig. 15 mit einer Schaltstange gemäß einer zweiten Ausführungsform, im nicht eingebauten Zustand,

Fig. 17

eine perspektivische Ansicht der Gangumschalteeinheit von Fig. 16 mit der Schaltstange im eingebauten Zustand,

Fig. 18

eine Seitenansicht einer Gangumschalteeinheit gemäß einer dritten Ausführungsform, in einer ersten Gangstufe und mit einer ersten Sensoranordnung,

Fig. 19

eine Seitenansicht der Gangumschalteeinheit von Fig. 18 in einer zweiten Gangstufe,

Fig. 20

eine Seitenansicht der Gangumschalteeinheit von Fig. 18 und Fig. 19, in der ersten Gangstufe und mit einer zweiten Sensoranordnung,

Fig. 21

eine Seitenansicht der Gangumschalteeinheit von Fig. 20, in der zweiten Gangstufe,

Fig. 22

eine perspektivische Ansicht einer Gangumschalteeinheit gemäß einer vierten Ausführungsform mit der Positionsdetektionseinheit von Fig. 4 und Fig. 5,

Fig. 23

eine Seitenansicht der Gangumschalteeinheit von Fig. 22 in einer ersten Gangstufe,

Fig. 24

eine Seitenansicht der Gangumschalteeinheit von Fig. 22 und Fig. 23 in einer zweiten Gangstufe,

Fig. 25

eine perspektivische Seitenansicht der Gangumschalteeinheit von Fig. 22 bis Fig. 24, und

Fig. 26

eine perspektivische Ansicht der Gangumschalteeinheit von Fig. 22 bis Fig. 25 ohne Getriebegehäuse.

The invention is explained in more detail in the following description with reference to exemplary embodiments shown in the drawings. Show it:

Fig. 1

1 shows a perspective view of a handheld power tool with a gear changeover unit and a communication interface,

Fig. 2

a partially sectioned side view of the hand machine tool of Fig. 1 with a drive unit,

Fig. 3

a longitudinal section of the drive unit of the hand tool from Fig. 1 and Fig. 2 ,

Fig. 4

a partial perspective view of the gear change unit of Fig. 2 with a position detection unit,

Fig. 5

an exploded view of the position detection unit of Fig. 2 and Fig. 4 ,

Fig. 6

a perspective side view of one of the position detection unit of FIG Fig. 4 and Fig. 5 assigned switching rings according to a first embodiment,

Fig. 7

a perspective side view of the gear change unit of Fig. 4 with a switching ring according to a second embodiment,

Fig. 8

a perspective side view of the switching ring of Fig. 7 ,

Fig. 9

2 shows a perspective partial view of the gear changeover unit with the shift ring according to the second embodiment,

Fig. 10

a perspective view of a system consisting of the hand machine tool of Fig. 1 and an operating unit according to a first embodiment,

Fig. 11

a partial perspective view of the hand tool of Fig. 1 with an operating unit according to a second embodiment,

Fig. 12

2 shows a perspective view of the control unit according to the first embodiment,

Fig. 13

a schematic diagram of the hand machine tool of Fig. 1 with the exemplary gear change unit and the communication interface,

Fig. 14

2 shows a perspective view of a gear change unit according to a second embodiment,

Fig. 15

a partial exploded view of the gear change unit of Fig. 14 ,

Fig. 16

a perspective view of the gear change unit of 14 and 15 with a shift rod according to a second embodiment, in the non-installed state,

Fig. 17

a perspective view of the gear change unit of Fig. 16 with the shift rod in the installed state,

Fig. 18

2 shows a side view of a gear shift unit according to a third embodiment, in a first gear stage and with a first sensor arrangement,

Fig. 19

a side view of the gear change unit of Fig. 18 in a second gear,

Fig. 20

a side view of the gear change unit of 18 and 19 , in the first gear stage and with a second sensor arrangement,

Fig. 21

a side view of the gear change unit of Fig. 20 , in the second gear,

Fig. 22

a perspective view of a gear change unit according to a fourth embodiment with the position detection unit of FIG Fig. 4 and Fig. 5 ,

Fig. 23

a side view of the gear change unit of Fig. 22 in a first gear,

Fig. 24

a side view of the gear change unit of Fig. 22 and Fig. 23 in a second gear,

Fig. 25

a perspective side view of the gear change unit of 22 to 24 , and

Fig. 26

a perspective view of the gear change unit of 22 to 25 without gearbox.

Description of the embodiments

Fig. 1 shows an exemplary hand power tool 100 with a housing 110, in which at least one drive motor (120 in Fig. 2 ) is designed to drive a preferably exchangeable insert tool which can be arranged in a tool holder 190. The housing 110 has a handle 103 with a hand switch 105. The drive motor (120 in Fig. 2 ) can be actuated, for example, via the manual switch 105, that is to say it can be switched on and off, and preferably electronically controlled or regulated in such a way that both reversing operation and specifications with regard to a desired rotational speed can be implemented. In addition, a direction of rotation switch 106 is preferably arranged in the area of the hand switch 105, via which optionally a direction of rotation of the drive motor (120 in Fig. 2 ) or one assigned to the drive motor Output shaft (310 in Fig. 3 ) is adjustable. Furthermore, the handheld power tool 100 can preferably be connected to an Ackupack 102 for the mains-independent power supply, but can alternatively also be operated in a network-dependent manner.

Handheld power tool 100 preferably has a switchable transmission (130 in Fig. 2 ) that can be switched between at least a first and a second gear stage. Handheld power tool 100 is preferably designed in the manner of an impact drill or drill screwdriver, the first gear stage corresponding to a screwing mode, for example, and the second gear stage corresponding to a drilling or impact drilling mode. However, further gear stages can also be implemented, so that, for example, the drilling mode is assigned to the second gear stage and the percussion drilling mode is assigned to a third gear stage, etc.

According to one embodiment, at least one user guidance unit 115 is provided, which is designed at least to set the first or second gear stage required in the current operation. The user guidance unit 115 can be designed for active and / or passive user guidance when switching between the first and second gear stages. With active user guidance, a user of handheld power tool 100 is preferably guided by visual, auditory and / or haptic instructions or prompts to switch over during a corresponding switchover operation, while with passive user guidance a corresponding switchover operation is carried out automatically and is preferably only displayed to the user. Exemplary implementations of active and passive user guidance are described in detail below.

The user guidance unit 115 preferably has at least one manually operable operating unit 116, 117 with at least one and illustratively a first and second manually operable operating element 116, 117, the operating elements 116, 117 being designed to initiate a switching process for switching the transmission 130 between different gear stages . At least one of the two operating elements 116, 117 can preferably be designed as a switch and / or key.

The user guidance unit 115 preferably has a mobile computer, for example a smartphone and / or a tablet computer, and / or the control element 116, 117 can be designed as a display. According to one embodiment, the user guidance unit 115 is at least partially integrated into the handheld power tool 100 and / or at least partially as an external, separate component (1040 in Fig. 10 ) educated. The display can be integrated in the handheld power tool 100 and / or can be arranged externally. Switching instructions can preferably be shown on the display in order at least to make it easier for a user of handheld power tool 100 to operate and / or to set, for example, an application-specific operating mode of handheld power tool 100.

Furthermore, the handheld power tool 100 preferably has a communication interface 1050, which is preferably provided for communication with the user guidance unit 115, which can preferably be operated by a user, and is designed to at least provide switching instructions for the application-specific switching of the transmission 130 between the two different gear stages from the user guidance unit 115 receive. The communication interface 1050 is at least designed to send a control signal to at least one of the operating elements 116, 117. It is preferred to generate a request to initiate a switching process for switching the transmission 130 between the two different gear stages, e.g. made possible by at least one of the operating elements 116, 117. According to one embodiment, the communication interface 1050 is designed in the manner of a wireless transmission module, in particular as a radio module for wireless communication using the Bluetooth standard. However, the transmission module can also be used for any other wireless and / or wired communication, e.g. via WLAN and / or LAN.

An optional working area lighting 104 is preferably arranged on the housing 110, illustratively in the area of the tool holder 190, for illuminating a working area of the hand power tool 100. In addition, the tool holder 190 is preferably assigned a torque limiting element 170 for setting a maximum torque that can be transmitted. The torque limiting element 170 can be a mechanical Slip clutch or an electrical torque limit can be formed.

Fig. 2 shows the handheld power tool 100 of Fig. 1 , which illustratively has a drive unit 220 with a drive motor 120 and a switchable transmission 130. The switchable transmission 130 preferably has a transmission housing 136 which is illustratively formed in two parts with a first and a second transmission housing part 137, 138. In this case, the first gear housing part 137 is preferably arranged facing the drive motor 120 and the second gear housing part 138 is arranged facing the tool holder 190. However, the gear housing 136 can also be formed in one piece or have more than two gear housing parts. The switchable transmission 130 is preferably designed in the manner of a planetary transmission, which is preferably switchable at least between two different gear stages, and in Fig. 3 is further described.

According to one embodiment, the switchable transmission 130 is assigned a gear changeover unit 210, which is designed to switch the switchable transmission 130 between at least two different gear stages. This gear changeover unit 210 preferably has at least one actuatable shift ring 140. In addition, the gear changeover unit 210 preferably has a transmission unit 134.

The actuatable switching ring 140 is preferably rotatable at least between a first and a second rotational position, but alternatively or additionally, it can also be designed to be axially displaceable, as exemplified in FIG 14 to 21 shown. The first rotational position preferably corresponds to a first gear stage and the second rotational position of the shift ring 140 to a second gear stage.

The transmission unit 134 is preferably designed to actuate the actuatable switching ring 140 on a preferably axially displaceable switching element (350 in Fig. 3 ) to transmit the transmission 130. The transmission unit 134 preferably has at least one axially displaceable shift rod 133 and a shift bracket 132, the shift rod 133 having the axially displaceable shift element (350 in Fig. 3 ) of the transmission 130 via the switching bracket 132 couples with the actuatable shift ring 140 of the gear changeover unit 210. The switching bracket 132 is preferably axially movable and / or pivotable on the switching rod 133 and the axially displaceable switching element (350 in Fig. 3 ) stored and pre-stressed this preferably in a predetermined switching position. Preferably, the gear change unit 210 or the switching element (350 in Fig. 3 ) only change the gear stage when the switchable transmission 130 is in operation, so that a gear change is only possible when the switchable transmission 130 is in operation.

According to one embodiment, the switching ring 140 has an actuating link path 142, in which the switching rod 133 engages at least in sections. To simplify the description, only the embodiment of the gear shift unit 210 with at least one rotatable shift ring 140 and a transmission unit 134 with a pivotable shift bracket 132 is described below. However, the switching ring 140 and / or the switching bracket 132, as described above, can also be axially displaceable.

The switching ring 140 is preferably assigned a position detection unit 160 which is designed to detect a respectively current switching position of the switching ring 140. As described above, the shift ring 140 can preferably be rotated at least between a first and a second rotational position, the first rotational position corresponding to a first gear stage and the second rotational position to a second gear stage. The position detection unit 160 is preferably axially displaceable at least between a first and a second detection position, the first detection position being designed to detect the first rotational position and the second detection position being designed to detect the second rotational position. In addition, the switching ring 140 preferably has a link path 144 which is connected to the position detection unit 160 and which is designed to axially shift the position detection unit 160 when the actuatable switching ring 140 is actuated.

The position detection unit 160 preferably has a guide element 164 and a display element 162, the guide element 164 engaging at least in sections in the link path 144. The display element 162 is preferably designed to display a respectively detected switching position of the actuatable switching ring 140.

According to one embodiment, the position detection unit 160 is assigned a sensor for detecting a current switching or rotational position of the actuatable switching ring 140. According to one embodiment, the sensor is designed as a linear sensor 155, and according to a further embodiment, the sensor 155 is an angle sensor (710 in Fig. 7 ) educated.

The linear sensor 155 is preferably arranged on a circuit board 151 of an electronics 150 assigned to the position detection unit 160 and is designed to detect a current detection position of the position detection unit 160. Here, the linear sensor 155 preferably detects a linear movement of the display element 162 of the position detection unit 160 and thus indirectly the current switching or rotational position of the actuatable switching ring 140, since a corresponding linear position of the display element 162 corresponds in each case to an assigned switching or rotating position of the actuatable switching ring 140 . Preferably, the linear sensor 155 is assigned at least one, illustratively three sensor elements 152, 153, 154. In contrast, the angle sensor (710 in Fig. 7 ) can be used to detect a respective angular position of the actuatable switching ring 140 which corresponds directly to a respective switching or rotational position of the actuatable switching ring 140.

According to one embodiment, the gear changeover unit 210 is assigned an actuating unit 180 with an actuating motor 182. A servomotor gear 184 is preferably assigned to the servomotor 182. The actuating motor 182 is preferably designed to actuate the actuatable shift ring 140 for gear shifting between the at least two different gear stages upon activation. The servomotor 180 can preferably be activated by actuating the at least one operating element 116, 117 or by the user guidance unit 115.

The communication interface 1050 is preferably designed to transmit a control signal for activating the servomotor 182 to the servomotor 182. The control signal can be generated in response to an actuation of the at least one operating element 116, 117. Alternatively or in addition to this, the generation of the control signal can preferably be carried out by the user guidance unit 115 are triggered, that is, for example, by a mobile computer in the form of a smartphone or a tablet computer, so that the operating elements 116, 117 can also be dispensed with. In addition, according to one embodiment, the generation can also be triggered directly by the communication interface 1050, for example in dependence on predetermined operating parameters, so that the operating elements 116, 117 can again be dispensed with.

To actuate the actuatable switching ring 140 when the servomotor 182 is activated, the actuating unit 180 preferably has an output shaft 186, which preferably drives a drive element 146 of the switching ring 140. The output shaft 186 and the drive element 146 are preferably designed as gear wheels which mesh with one another. A corresponding toothing of the output shaft 186 and the drive element 146 is preferably straight-toothed in order to achieve a rotation of the switching ring 140 by a rotation of the output shaft 186. This preferably allows the switching ring 140 to be rotated between the at least two rotational positions. According to one embodiment, the servomotor 182 can be controlled via the electronics 150 of the position detection unit 160, preferably after a voltage interruption, e.g. of a battery change, a current switching ring position can be determined via the position detection unit 160.

Furthermore clarified Fig. 2 the hand switch 105 of the hand power tool 100, which is designed to activate and deactivate the drive motor 120. An on / off switch 107 is preferably assigned to the hand switch 105, the hand switch 105 preferably being designed as a push button, but can also be designed as a push button.

Fig. 3 shows the switchable transmission 130 of FIG Fig. 1 and Fig. 2 for driving an output shaft 310 of handheld power tool 100 from Fig. 1 . The planetary gear 130 preferably has at least a first and second, illustratively a first, second and third planetary stage 372, 374, 376, which illustratively enable operation of the planetary gear 130 in a first and a second gear stage. Each gear stage is preferably assigned to a corresponding operating mode, for example a screwing mode, drilling mode and / or an impact drilling mode / impact screwing mode. For example, a screwing mode can be provided for executing a screwing operation with torque limitation in a first gear stage, while a drilling operation and / or a drilling or screwing operation with impact function is provided for execution in a second gear stage.

The planetary gear 130 preferably has an axially displaceable shift element 350, which is preferably designed as a shift ring gear and is referred to below as the "shift ring gear 350". The shift ring gear 350 is preferably displaceable between at least two axial positions, one axial position being assigned to a gear stage. According to one embodiment, the shift ring gear 350 is designed as a ring gear of the second planetary gear stage, but alternatively the shift ring gear 350 can also be designed as an additional shift ring gear of the planetary gear 130.

Fig. 3 furthermore illustrates the connection of the transmission unit 134 to the planetary gear 130, the transmission unit 134 preferably being designed to transmit actuation of the actuatable shift ring 140 to the axially displaceable shift ring gear 350 of the planetary gear 130. Here, the shift rod 133 assigned to the transmission unit 134 preferably connects the shift ring gear 350 of the planetary gear 130 via the shift bracket 132 to the actuatable shift ring 140 of the gear changeover unit 210. The shift bracket 132 is preferably pivotally mounted on the shift rod 133 and the axially displaceable shift ring gear 350. A gear change is preferably also possible with a tooth-on-tooth arrangement between the switching ring gear 350 and the planetary gear 130.

Furthermore clarified Fig. 3 an optional percussion mechanism 320, illustratively designed as a ratchet hammer mechanism, which can preferably be activated in the percussion drilling mode. However, it is pointed out that the design of the striking mechanism 320 as a latching hammer mechanism is only of an exemplary nature and should not be seen as a limitation of the invention. The hammer mechanism 320 can also be designed as any other hammer mechanism, for example as a wobble hammer mechanism. To activate and / or deactivate the striking mechanism 320 or a corresponding striking mode, a blocking member 330 is provided which, in the striking mode, acts on deactivating elements 342 of the switching ring 140 at one end of the actuatable switching ring 140 facing the tool holder 190 becomes. At its end 344 facing the transmission 130, the switching ring 140 is preferably in contact with the housing 110 or the transmission housing 136.

Fig. 4 shows the transmission unit 134 with the shift rod 133 and the shift bracket 132 of Fig. 2 . The shift rod 133 illustratively has a first and a second axial end 431, 433, the first end 431 facing the drive motor 120 and the second end 433 facing the torque limiting element 170, for example.

The shift rod 133 is preferably in one - in Fig. 4 illustratively upper - guide area 416 of the transmission housing 136, the second end 433 of the shift rod 133 being arranged between the shift ring 140 and the transmission housing 136 or on a side of the shift ring 140 facing the transmission housing 136. The shift rod 133 preferably engages with its guide element (921 in) arranged at the second end 433 Fig. 9 ) at least in sections into the actuating link path 142 of the actuatable shift ring 140. At its first end 431, the shift rod 133 has a preferably groove-like receptacle 434 for receiving the shift bracket 132.

According to one embodiment, the switching bracket 132 has a receiving area 423 for arrangement in the groove-like receptacle 434 of the switching rod 133. The receiving area 423 is preferably connected to an end area 421 via a connecting area 422. In this case, the end region 421 for arrangement on the switching ring gear 350 preferably extends through the gear housing 136 via a recess 414 in the gear housing 136.

The switching bracket 132 is preferably guided in the region of the connecting region 422 via at least one, illustratively a first and second guide web 411, 412 of the transmission housing 136. The switching bracket 132 is preferably at least approximately U-shaped, wherein in Fig. 4 only one side of the switching bracket 132 is shown, and the opposite side is preferably analogous to that in FIG Fig. 4 shown side is formed. In addition, the switching bracket 132 is preferably designed as a wire bracket.

Fig. 5 shows the position detection unit 160 of FIG Fig. 2 with the display element 162 and the guide element 164, the display element 162 preferably is arranged on an upper side 503 of the position detection unit 160 and the guide element 164 is arranged on the underside 504 thereof. The upper side 503 illustratively faces an underside 502 of the circuit board 151 and the sensor 155, which is preferably designed as a linear sensor, is arranged on an upper side 501 of the circuit board 151. The circuit board 151 preferably has a recess 532 through which the display element 162 of the position detection unit 160 projects to indicate a respectively detected switching position of the actuatable switching ring 140. Furthermore clarified Fig. 5 the at least partial arrangement of the guide element 164 in the link path 144 of the actuatable switching ring 140. The switching ring 140 preferably faces the underside 504 of the position detection unit 160.

According to one embodiment, the actuatable switching ring 140 has a preferably cylindrical base body 514 with a first and second axial end 521, 522 and an outer and inner circumference 515, 516. The base body 514 preferably has, at least in sections, an axial extension region 512, which is preferably formed at the first end 521 of the switching ring 140, but can also be formed at the second end 522. The extension area 512 is preferably arcuate and, according to a first embodiment, is provided with the link path 144 and the actuation link path 142. The slide track 144 is illustratively arranged closer to the first end 521 than the actuation slide track 142. However, the actuation slide track 142 could also be arranged closer to the first end 521 than the slide track 144.

Furthermore, the base body 514 preferably has the drive element 146 on its outer circumference 515 for driving the switching ring 140 via the actuating unit 180 of Fig. 2 on. The drive element 146 is preferably designed as a circular or circular segment-shaped gear or pinion element. In addition, at least one and illustratively three cam members 524, 526, 528 for deactivating the striking mechanism 320 and / or for torque limitation, which, for example, the deactivation elements 342 of FIG Fig. 3 form.

Fig. 6 shows the switching ring 140 from Fig. 5 , which is designed according to a first embodiment and preferably has the three cam members 524, 526, 528. Each of the cam members 524, 526, 528 preferably has at least one axial extension 611, 612, a first extension 611 being formed in the direction of the first end 521 of the switching ring 140 and a second extension 612 in the direction of the second end 522 of the switching ring 140 is trained. According to one embodiment, the first extension 611 is designed for torque limitation and the second extension 612 for deactivating the striking mechanism 320.

Fig. 7 10 shows the gear change unit 210 of FIG Fig. 2 with an actuatable shift ring 740 according to a second embodiment without the first transmission housing part 137. The actuatable shift ring 740 is analogous to the shift ring 140 from 1 to 6 formed, but the extension area 512 only has the actuating link path 142. Furthermore, the position detection unit 160 is preferably assigned the sensor 155 designed as an angle sensor 710 to detect a current switching position of the actuatable switching ring 740. Illustratively, the angle sensor 710 is arranged in the area of the actuating unit 180, in particular on the output element 186. However, the angle sensor 710 could also be arranged in the area of the switching ring 740.

Fig. 8 shows the actuatable switching ring 740 from Fig. 7 with its first and second ends 821, 822, the extension area 512 analogous to the actuatable switching ring 140 from 1 to 6 is arranged at the first end 821 of the switching ring 740. Clarified Fig. 8 the extension area 512 with the actuating link path 142.

Fig. 9 10 shows the gear change unit 210 of FIG Fig. 2 with the actuatable switching ring 740 from Fig. 7 and Fig. 8 and clarifies a guide element 921 formed at the second end 433 of the shift rod 133, which can be arranged at least in sections in the actuating link path 142 for changing gear. According to a further embodiment, the extension area 512 of the switching ring 740 has a first and second stop edge 931, 932. In addition, the first gear housing part 137 has at least one, illustratively two stop elements 911, 912. The second stop edge 932 preferably lies in an illustrated rotational position of the switching ring 740 in Fig. 9 , which corresponds to the screwing mode, for example on the second stop element 912 and the first stop edge 931 faces the first stop element 911, the first stop edge 931 in a further rotational position of the switching ring 740, which corresponds to the impact mode, would rest on the first stop element 911.

Fig. 10 shows the handheld power tool 100 of Fig. 1 with the gear change unit 210 from Fig. 2 which, according to one embodiment, the actuatable switching ring 140 and the actuating unit 180 from Fig. 7 , as well as the communication interface 1050 from Fig. 1 having. In addition, the handheld power tool 100 with the user guidance unit 115 of FIG Fig. 1 provided, which here preferably has an operating unit 1020 for manually setting a gear stage or an operating mode.

The control unit 1020 is preferably provided with at least one, illustratively three control elements 1021, 1022, 1023 for setting a gear stage or an operating mode. Illustratively, the control element 1021 is provided for setting the screwing mode, the control element 1022 for setting the drilling mode and the control element 1023 for setting the impact mode, the control elements 1021-1023 having symbols corresponding to the operating modes by way of example. The control elements 1021-1023 are preferably arranged on a circuit board 1030. The control unit 1020 is preferably at least partially integrated in the handheld power tool 100.

Here or as an alternative to this, the user guidance unit 115 can, as described above, be at least partially designed as an external, separate component 1040. In this case, the external component 1040 preferably has a mobile computer, in particular in the manner of a smartphone and / or tablet computer. Alternatively, other so-called "smart devices" such as B. a watch, glasses, etc. can be used as a mobile computer. As described above, the operating unit 1020 can also be dispensed with, in particular if it can be implemented by the mobile computer. The handheld power tool 100 preferably has a display for displaying a set operating mode. In this case, the user guidance unit 115 preferably forms a tool system 1000 with the handheld power tool 100.

The mobile computer 1040 preferably has a display 1010, which is preferably designed in the manner of a touchscreen or for gesture control. The display 1010 preferably has at least one, illustratively three control elements 1011, 1012, 1013 for entering at least one operating mode of the handheld power tool 100. Are illustrative in Fig. 10 the control elements 1011-1013 on the display 1010 are designed as control panels, but could also be designed as switches and / or buttons.

In the event that the user guidance unit 115 has both the control unit 1020 and the mobile computer 1040, the control signal described above is preferably designed to display on the display 1010 a request to initiate a switching process for switching the transmission 130 between the different ones To generate gear steps. In this case, instructions are preferably shown on the display 1010, for example an instruction as to which operating mode is to be set for a predetermined work cycle, which a user of the handheld power tool 100 can then subsequently set, for example via the operating unit 1020. The operating elements 1021-1023 on the handheld power tool 100 can be equipped with lighting means (1231, 1232, 1233 in Fig. 12 ) and the control signal in this case is designed to in each case a corresponding lighting means (1231, 1232, 1233 in Fig. 12 ) to activate.

In addition, the mobile computer 1040 can also be at least partially integrated into the handheld power tool 100 and the operating mode is preferably set automatically, preferably via the actuating unit 180. It should be noted that the in Fig. 10 described, exemplary implementations of the user guidance unit 115 can be combined with one another as desired and, for example, the communication interface 1050 can also take over the functionality of the user guidance unit 115.

Fig. 11 shows the control unit 1020 of Fig. 10 which according to one embodiment has a setting element 1120 for manual setting of the respective operating mode. The setting element 1120 is preferably in one piece with the actuatable switching ring 140 of 2 to 6 or the actuatable switching ring 740 from 7 to 10 formed and preferably projects through a recess 1105 of the operating unit 1020. By moving it of the setting element 1120 in the direction of a double arrow 1103, the switching ring 140 or the switching ring 740 is rotated, as a result of which the respective operating mode can be set. Analogous to Fig. 10 the control elements 1021-1023 have symbols corresponding to the respective operating modes.

Fig. 12 shows the control unit 1020 of Fig. 10 with the operating elements 1021-1023 and the circuit board 1030. The circuit board 1030 preferably has at least one and illustratively three switching elements 1235, 1236, 1237. Three display elements 1231, 1232, 1233 are preferably provided to indicate a gear stage that is set in each case. These are preferably designed as lighting elements. In this case, a switching element 1235-1237 with a lighting element 1231-1233 is assigned to an operating element 1021-1023. Illustratively, the switching element 1235 and the lighting element 1231 are assigned to the control element 1021, the switching element 1236 and the lighting element 1232 are assigned to the control element 1022 and the switching element 1237 and the lighting element 1233 are assigned to the control element 1023.

The lighting means 1231, 1232, 1233 are preferred at least for displaying the request to initiate a switching process for switching the transmission 130 from Fig. 2 can be activated between the different gear levels. The switching elements 1235-1237 are preferably designed as switches or pushbuttons and / or the lighting elements 1231-1233 are designed in the manner of LEDs. Alternatively, the operating unit 1020 can also be designed in the manner of a display, preferably with a touchscreen, and / or a mobile computer, it being possible for a symbol to be actuated in each case to light up and / or flash on the display. The operating unit 1020 is preferably provided with the actuating unit 180 or the servomotor 182 and the servomotor gear 184 for setting an operating mode selected by a user 1230 or for rotating the actuatable switching ring 140 from 2 to 6 connected, which in turn can preferably move the position detection unit 160 axially along a double arrow 1201.

Fig. 13 shows the tool system 1000 of Fig. 10 with the handheld power tool 100 and the mobile computer 1040 from Fig. 10 . Clarified Fig. 13 the hand machine tool 100 with its drive unit 220, the drive motor 120, the gear 130, the hammer mechanism 320 and the torque limiting element 170 has. The electronics 150 controls at least one actuator 1351, 1352, 1353. Illustrations are shown in Fig. 13 Three actuators 1351, 1352, 1353 are shown, the actuator 1351 being designed, for example, to change gear of the transmission 130, the actuator 1352 for activating / deactivating the striking mechanism 320 and the actuator 1353 for setting a torque by means of the torque limiting element 170. The electronics 150 preferably give when an actuator 1351-1353 is activated, an activation signal is forwarded to an associated lighting element 1231-1233. Alternatively or additionally, the activation signal can also be designed as a signal tone.

According to one embodiment, the mobile computer 1040 has an interactive program 1342, 1344, in particular a smartphone app, for communication with the communication interface 1050 of the hand tool 100. A first program 1342 is preferably designed for setting use cases, e.g. to screw a screw into softwood. The program 1342 preferably determines operating parameters for a particular application, e.g. a rotational speed, a direction of rotation, a torque, a gear stage and / or an impact operation requirement, and forwards these to the communication interface 1050 of the handheld power tool 100.

In this case, the communication interface 1050 is preferably designed to transmit a control signal to the actuators 1351, 1352, 1353 of the handheld power tool 100, at least one actuator 1351 being designed to switch the transmission 130 between the different gear stages when activated by the communication interface 1050. The communication interface 1050 preferably transmits the control signal to the electronics 150, which activates and / or controls the respective actuators 1351-1353.

As an alternative or in addition, a second program 1344 is provided, which is designed to set at least one specific operating parameter, for example a speed, a direction of rotation, a torque, a gear stage and / or an impact operation requirement. In this case, a user of handheld power tool 100 inputs desired operating parameters directly via program 1344. These are then transmitted to the communication interface 1050 of the handheld power tool 100, the communication interface 1050 forwards a corresponding control signal as described above.

Alternatively or in addition to this, the handheld power tool 100 can have at least one signal transmitter 1311, 1312, 1313 for the manual setting of a gear stage and / or an operating mode or for the manual setting of operating parameters. Are illustrative in Fig. 13 three signal generators 1311, 1312, 1313 are shown. In this case, a first signal transmitter 1311 is designed, for example, for changing gear, a second signal transmitter 1312 for activating and / or deactivating the striking mechanism 320 and a third signal transmitter 1313 for adjusting the torque. The respective signal transmitter 1311-1313 is preferably designed to send a control signal to the electronics 150, depending on the application or input, so that the electronics 150 can activate and / or control the respective actuators 1351-1353. The signal transmitters 1311-1313 are preferably designed as electrical signal transmitters, but can also be configured as any other signal transmitter, for example as a mechanically displaceable lever arm.

In addition, the user guidance unit 115 can be assigned a display and / or a mobile computer 1040 which, as described above, displays switching instructions for the application-specific switching of the transmission 130. The switchover instructions can be visualized on the display and / or the mobile computer 1040 as step-by-step instructions. Here, the at least one control element 116, 117 for initiating a switchover process for switching the transmission 130 between the different gear stages preferably has a sensor 1370, which is designed to communicate the communication interface 1050 and / or the mobile computer 1040 when the at least one control element is actuated 116, 117 to transmit an actuation signal so that a respective next step of the switchover instruction can be displayed.

Furthermore, the sensor 1370 can also be designed as an internal and / or external sensor for monitoring and / or optimizing the hand tool 100 and preferably as a temperature sensor, acceleration sensor, position sensor, etc. In this case, software can be provided which is designed to adjust the settings of the electronics 150 or of the hand tool 100 to be checked and, if necessary, adapted, for example in the case of the drive motor 120 from which has become hot due to excessive torque Fig. 1 issue a warning signal and / or carry out an automatic gear change.

An adapter interface 1380 is preferably provided for connection to at least one adapter 1385. The adapter interface 1380 can be designed in the manner of a mechanical interface, an electrical interface and / or a data interface, the adapter 1385 for transmitting information and / or control signals, such as e.g. a torque, a speed, a voltage, a current and / or other data to the handheld power tool 100. In the case of an adapter interface 1380 designed as a data interface, the adapter 1385 preferably has a transmission unit. Preferably, the adapter 1385 e.g. be designed as a rangefinder and transmit determined parameters to the handheld power tool 100 via the adapter interface 1380. The adapter can be used with and / or without drive unit 220. The adapter 1385 can preferably be activated via the mobile computer 1040, with this or the display being able to visualize activation of the adapter 1385.

Furthermore, the electronics 150 preferably control the drive motor 120 and / or the work area lighting 104. The drive motor 120 is preferably controlled as a function of a direction of rotation signal transmitted by the direction of rotation switch 106. The hand switch 105 preferably has a lock 1360, which is preferably designed as a mechanical and / or electrical lock. Furthermore, the on / off switch 107 and / or the electronics 150 are supplied with power by the battery pack 102.

Fig. 14 10 shows the gear change unit 210 of FIG Fig. 2 , which is illustratively operated manually via an alternative control element 1460 and is referred to below as "gear changeover unit 1410". The control element 1460 is preferably designed in the form of a segment of a circle and has a status display 1464 on its upper side 1461, which preferably has symbols for corresponding operating modes. In addition, the operating element 1460 preferably has the first gear housing part 137 of FIG Fig. 2 end facing a driver element 1462, which in a receptacle 1442 one of the gear shifting unit 1410 associated actuatable switching rings 1440 is arranged. By rotating the control element 1460 in the direction of a double arrow 1401, a gear change or operating mode setting takes place in each case.

The actuatable switching ring 1440 preferably has an extension area 1444 with an actuating link track 1446 that of the output shaft 310 of Fig. 3 is facing. The switching ring 1440 preferably has two diametrically opposite extension regions 1444.

The actuatable switching ring 1440 is preferably designed to be axially displaceable and rotatable, the switching ring 1440 preferably being axially displaced when rotated. Alternatively, the switching ring 1440 can also only be axially displaceable via the operating element 1460. Furthermore, a shift rod 1450 is provided, which preferably has two diametrically opposed guide elements 1452, which are arranged in the actuating link tracks 1446. Here, the shift rod 1450 with the gear 130 of Fig. 2 connected.

Fig. 15 14 shows the gear change unit 1410 of FIG Fig. 14 with a fixing element 1510 for at least approximately fixing the actuatable switching ring 1440 on the first gear housing part 137. The fixing element 1510 is preferably designed in the manner of a disk and preferably fixes the switching ring 1440 via a clamping and / or screw connection on the first gear housing part 137. For axial displacement of the actuatable switching ring 1440 during rotation of the actuatable switching ring 1440, the fixing element 1510, the switching ring 1440 and / or the gear housing 136 have at least one wedge-like element 1512, 1514, 1516. Illustratively, the fixing element 1510 has at least one wedge-like element 1512 on its side facing the switching ring 1440, preferably along its outer circumference, the switching ring 1440 illustratively has at least one wedge-like element 1514 on its inner circumference and the gear housing 136 illustratively has at least one on its outer circumference wedge-like element 1516. The wedge-like elements 1512-1516 preferably have a triangular contour, but can have any other contour, for example an oval contour.

Fig. 16 14 shows the gear change unit 1410 of FIG 14 and 15 without the first gear housing part 137 from Fig. 2 to illustrate the shift rod 1450. Illustratively, this has an arc-shaped base body 1620, on each end of which a guide element 1452 is formed. Furthermore clarified Fig. 16 the transmission 130 from Fig. 2 with an alternative shift ring gear 1610. This shift ring gear 1610 preferably has a cylindrical base body 1612 with a groove-like recess 1640 for arranging the shift rod 1450.

Fig. 17 14 shows the gear change unit 1410 of FIG Fig. 16 with the shift ring gear 1610 and the shift rod 1450. Clarified Fig. 17 the arrangement of the shift rod 1450 in the recess 1640 of the shift ring gear 1610.

Fig. 18 shows an alternative gear change unit 1810 with the actuatable shift ring 1440 of FIG 14 to 16 in an exemplary first gear stage or a first operating mode. The switching ring 1440 preferably has on its outer circumference analogous to the switching ring 140 from Fig. 2 or 740 from Fig. 7 a drive element 1820. This drive element 1820 is preferably rotated via the actuating unit 180 or the output element 186 for gear shifting and is preferably axially displaced in the direction of a double arrow 1802 at the same time. Analogous to the switching ring 1440 from Fig. 14 the switching ring gear 1610 axially shifted.

The gear changeover unit 1810 for position detection of the shift ring 1440 is preferably the angle sensor 710 of Fig. 7 assigned, which according to a first arrangement variant is arranged on a rear side 1801 of the gear changeover unit 1810 opposite the output shaft 310 or coaxially to the shift ring 1440. The angle sensor 710 is designed to directly measure a rotation of the switching ring 1440.

Alternatively, instead of the angle sensor 710, the linear sensor 155 from Fig. 2 Find application. This is preferably designed to directly measure an axial displacement of the switching ring 1440, which occurs when the switching ring 1440 is rotated.

Fig. 19 shows the gear change unit 1810 of FIG Fig. 18 in an exemplary second gear stage or a second operating mode. The shift ring 1440 is illustrative in the direction of the second gear housing part 138 of FIG Fig. 2 axially shifted.

Fig. 20 shows the gear change unit 1810 of FIG 18 and 19 , in the exemplary first gear stage or in the first operating mode, the angle sensor 710 being arranged, for example, in the region of the outer circumference of the switching ring 1440 or radially to the switching ring 1440 according to a second arrangement variant. Illustratively, the angle sensor 710 is arranged diametrically opposite to the actuating unit 180.

Fig. 21 shows the gear change unit 1810 of FIG Fig. 20 in the exemplary second gear stage or the second operating mode. Illustratively, the shift ring 1440 is axially displaced in the direction of the second gear housing part 138.

Fig. 22 shows another alternative gear change unit 2210 with an actuatable shift ring 2240. The shift ring 2240 preferably has on its outer circumference analogous to the shift rings 140, 740 and / or 1440 described above, a drive element 2220, which via the actuating unit 180 or the output element 186 of Fig. 2 is rotatable for changing gear. In addition, the switching ring 2240 preferably has at least one, preferably two, diametrically opposite actuating link tracks 2246 on its outer circumference.

Furthermore, a further alternative shift rod 2250 is provided, which has two diametrically opposed guide elements 2252, which are arranged in the actuating link tracks 2246, the shift rod 2250 with the gear 130 of FIG Fig. 2 connected is. The actuatable switching ring 2240 preferably has on its outer circumference, illustratively between the two actuating link tracks 2246, a link track 2248 that can be connected to the position detection unit 160. This is designed for the axial displacement of the position detection unit 160 when the actuatable switching ring 2240 is actuated.

Fig. 23 10 shows the gear change unit 2210 of FIG Fig. 22 , wherein the drive element 2220 is connected to the actuating unit 180. Illustratively, the actuatable shift ring 2240 is arranged in its first rotational position, which is assigned to the first gear stage or a first operating mode.

Fig. 24 10 shows the gear change unit 2210 of FIG Fig. 23 in the exemplary second gear stage or the second operating mode. The actuatable switching ring 2240 is illustrative in comparison to Fig. 23 twisted arranged.

Fig. 25 10 shows the gear change unit 2210 of FIG 22 to 24 without the actuatable switching ring 2240 and illustrates the illustratively pin-like guide element 2252. The guide element 2252 is preferably connected to the switch rod 2250 via a connecting element 2512. The guide element 2252 and the connecting element 2512 are arranged on an illustrative plate-like base body 2514.

The connecting element 2512 preferably encapsulates, at least in sections, one end of an arcuate base body (2610 in Fig. 26 ). Illustrative are the guide element 2252 and the connecting element 2512 in the axial direction of the gear 130 of FIG Fig. 2 arranged at a distance from one another, however, the guide element 2252 can be connected in any other direction to the connecting element 2512, for example arranged in the radial direction on the connecting element 2512.

The plate-like base body 2514, the guide element 2252 and the connecting element 2512 preferably form a guide unit 2510, which is preferably in a receptacle 2520 of the gear housing 136, in particular of the first gear housing part 137 of FIG Fig. 2 , is arranged. The shift rod 2250 preferably has two guide units 2510, which are preferably arranged diametrically opposite one another.

Fig. 26 10 shows the gear change unit 2210 of FIG Fig. 25 without the first gear housing part 137 from Fig. 2 , with the ring gear 1610 from 16 and 17 with the recess 1640 for arranging the shift rod 2250. Illustratively, the shift rod 2250 has an arcuate base body 2610 with a first and second ends 2611, 2612. The arcuate base body 2610 is preferably designed in the manner of a wire bracket, but could also be analogous to 16 and 17 have a rectangular cross section or, alternatively, can also be designed as a piece of wire. A guide unit 2510 is preferably arranged at each of the two ends 2611, 2612 of the base body 2610. Clarified Fig. 26 the arrangement of the connecting element 2512 of the guide unit 2510 at one end of the curved base body 2610, the respective end 2611, 2612 being encased by the connecting element 2512 at least in sections, preferably completely.

Claims (14)

1. Hand-held power tool (100) having a switchable transmission (130), which is assigned a gear switchover unit (210) for switching over between at least two different gear stages, the gear switchover unit (210) having an actuable switching ring (140) and an actuating unit (180) with an actuating motor (182), the actuating motor (182) being configured, in the case of activation, to actuate the actuable switching ring (140) for the gear switchover between the at least two different gear stages, the actuable switching ring (140) being assigned a position detection unit (160) which is configured to detect a respective actual switching position of the actuable switching ring (140), it being possible for the actuable switching ring (140) to be rotated at least between a first and a second rotational position, the first rotational position corresponding to a first gear stage, and the second rotational position corresponding to a second gear stage, characterized in that the position detection unit (160) can be displaced axially between at least a first and a second detection position, the first detection position being configured for the detection of the first rotational position, and the second detection position being configured for the detection of the second rotational position.
2. Hand-held power tool according to Claim 1, characterized in that the actuable switching ring (140) has a slotted guide track (144) which is connected to the position detection unit (160) and is configured for the axial displacement of the position detection unit (160) in the case of an actuation of the actuable switching ring (140).
3. Hand-held power tool according to Claim 2, characterized in that the position detection unit (160) has a guide element (164) and an indicator element (162), the guide element (164) engaging at least in sections into the slotted guide track (144), and the indicator element (162) being configured to indicate a respective detected switching position of the actuable switching ring (140).
4. Hand-held power tool according to one of Claims 1 to 3, characterized in that the position detection unit (160) is assigned a linear sensor (155) which is configured to detect a respective actual detection position of the position detection unit (160).
5. Hand-held power tool according to one of Claims 1 to 3, characterized in that the position detection unit (160) for the detection of the respective actual switching position of the actuable switching ring (140) is assigned an angle sensor (710).
6. Hand-held power tool according to one of the preceding claims, characterized in that the switchable transmission (130) is configured in the manner of a planetary transmission which has a switching internal gear (350) which can be displaced axially between at least two axial positions, the at least two axial positions being assigned to the at least two different gear stages.
7. Hand-held power tool according to Claim 6, characterized in that the gear switchover unit (210) has a transmission unit (134) which is configured to transmit an actuation of the actuable switching ring (140) to the axially displaceable switching internal gear (350).
8. Hand-held power tool according to Claim 7, characterized in that the transmission unit (134) has at least one axially displaceable selector rod (1450; 2250) which connects the axially displaceable switching internal gear (1610) to the actuable switching ring (1440; 2240), the at least one axially displaceable selector rod (1450; 2250) being fastened to the axially displaceable switching internal gear (1610), and the actuable switching ring (1440; 2240) having an actuation slotted guide track (1446; 2246), into which the at least one axially displaceable selector rod (1450; 2250) engages at least in sections.
9. Hand-held power tool according to Claim 7, characterized in that the transmission unit (134) has an axially displaceable selector rod (133) which can be displaced axially by way of an actuation of the actuable switching ring (140).
10. Hand-held power tool according to Claim 9, characterized in that the axially displaceable selector rod (133) connects the axially displaceable switching internal gear (350) to the actuable switching ring (140), the actuable switching ring (140) having an actuation slotted guide track (142), into which the axially displaceable selector rod (133) engages at least in sections.
11. Hand-held power tool according to Claim 9 or 10, characterized in that the transmission unit (134) has a switching bracket (132) which is mounted pivotably on the axially displaceable selector rod (133) and the axially displaceable switching internal gear (350).
12. Hand-held power tool according to one of the preceding claims, characterized in that an operating unit (115) is provided for setting a gear stage which is required during operation.
13. Hand-held power tool according to Claim 12, characterized in that the operating unit (115) has at least one indicator element (1231, 1232, 1233) for indicating a respective set gear stage.
14. Hand-held power tool according to one of the preceding claims, characterized in that a first gear stage corresponds to a screwing mode, and a second gear stage corresponds to a drilling or percussive drilling mode.

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