Handheld machine tool with activation unit

Abstract

In a hand-held power tool (100), in particular a screwdriver, with an elongated housing (110) in which a drive unit (220) with at least one drive motor (140) for driving a tool holder (120) is arranged, wherein the tool holder is designed to receive an insert tool, and with an activation unit (189) for activating the drive motor (140), wherein the drive motor is activated by striking an insert tool (190) arranged in the tool holder (120) against a workpiece to be machined, in particular along a longitudinal axis (128) of the hand-held power tool, the activation unit has a motor switch (185) arranged in the area of ​​the tool holder (120), as well as an actuating element arranged on the outer circumference of the tool holder for actuating the motor switch (185).wherein the tool holder (120) has an internal recess facing the drive motor (140) for receiving a spring element (180) associated with the activation unit (189), which acts on the actuating element by striking the tool holder (120) in a direction (199) pointing away from the drive motor (140) to deactivate the drive motor (140).

Description

State of the art

[0001] The present invention relates to a hand-held power tool, in particular a screwdriver, with an elongated housing in which a drive unit with at least one drive motor for driving a tool holder is arranged, wherein the tool holder is designed to receive an insert tool, and with an activation unit for activating the drive motor, wherein the drive motor is activated by striking an insert tool arranged in the tool holder against a workpiece to be machined, in particular along a longitudinal axis of the hand-held power tool.

[0002] A handheld power tool of this type, designed as a stick screwdriver, is known from the prior art. The stick screwdriver has a drive motor in its housing for driving an associated tool holder. The drive motor, or a switching element associated with the drive motor, is activated when a tool located in the tool holder strikes a workpiece. The switching element is located in the area of ​​the drive motor, and to activate the drive motor, the entire drive unit must be moved along the longitudinal axis of the handheld power tool.

[0003] EP 1 369 206 A1 discloses an electric rotary tool switching system in which an electric motor can be activated by means of a push-button operating system or a lever operating system. Disclosure of the invention

[0004] The invention relates to a hand-held power tool, in particular a screwdriver, with an elongated housing in which a drive unit with at least one drive motor for driving a tool holder is arranged, wherein the tool holder is designed to receive an insert tool, and with an activation unit for activating the drive motor, wherein the drive motor is activated by striking an insert tool arranged in the tool holder against a workpiece to be machined, in particular along a longitudinal axis of the hand-held power tool.The activation unit has a motor switch arranged in the area of ​​the tool holder, as well as an actuating element arranged on the outer circumference of the tool holder for actuating the motor switch, wherein the tool holder has an inner recess facing the drive motor for receiving a spring element associated with the activation unit, which acts on the actuating element by striking the tool holder in a direction away from the drive motor to deactivate the drive motor.

[0005] The invention thus enables the provision of a hand-held power tool in which a compact activation unit can be provided by arranging the spring element associated with the activation unit in the inner recess of the tool holder.

[0006] Preferably, the spring element can be compressed by applying pressure to the tool holder in the direction of the drive motor, in order to enable the release or actuation of the motor switch by the actuating element and thus the activation of the drive motor.

[0007] This allows for easy activation of the drive motor.

[0008] The tool holder preferably has a torque coupling on its outer circumference in the area of ​​the inner holder.

[0009] This makes it easy and straightforward to provide a hand-held power tool with a torque coupling.

[0010] According to one embodiment, the torque coupling has an adjusting sleeve for setting a predefinable torque and a spring retaining ring, wherein the adjusting sleeve is directly connected to the spring retaining ring via a toothed connection.

[0011] This allows for a space-saving arrangement of the torque coupling.

[0012] Preferably, the tool holder has a support element on its outer circumference, wherein the actuating element rests against the support element and is axially secured by means of a locking element.

[0013] This allows for a safe and robust arrangement of the actuating element on the outer circumference of the tool holder.

[0014] The drive unit preferably comprises a gearbox, in particular a planetary gearbox, and the gearbox is arranged in a gearbox housing, wherein an end face of the gearbox housing facing the tool holder serves as the axial contact surface of the actuating element when the drive motor is deactivated.

[0015] This allows for a simple and stable arrangement of the actuating element in the hand-held machine tool.

[0016] According to one embodiment, the transmission has an output element, wherein the output element engages in the inner recess of the tool holder.

[0017] This allows for a safe and uncomplicated arrangement of the spring element on the output element in the inner recess.

[0018] Preferably, the tool holder is designed to be axially displaceable relative to the output element.

[0019] This allows for easy activation and deactivation of the drive motor by moving the tool holder relative to the drive motor.

[0020] Preferably, the output element has an internal recess for receiving the spring element, wherein the spring element is arranged between the output element, in particular the internal recess, and the tool recess, in particular the internal recess.

[0021] This allows for a safe arrangement of the spring element, enabling the provision of a compact drive unit.

[0022] The gearbox preferably has at least one bearing element for rotatably mounting the tool holder, wherein the bearing element is arranged between the tool holder and the gearbox housing.

[0023] This enables safe and reliable operation of the hand-held power tool, especially the tool holder for driving a tool attachment.

[0024] According to one embodiment, the activation unit has a circuit board which is arranged in the elongated housing in the area of ​​an end face of the elongated housing, wherein the motor switch is arranged on the circuit board and is designed as a motor off switch, and wherein the spring element acts the actuating element against the motor off switch by striking the tool holder to deactivate the drive motor.

[0025] Thus, a safe and reliable deactivation of the hand-held power tool can be achieved by continuously operating the motor switch, which can be easily terminated by striking the tool holder and thus striking the actuating element away from the motor switch.

[0026] According to another embodiment, the motor switch is arranged on an end face of the gearbox housing that faces a first axial end of the housing.

[0027] This allows for a simple alternative arrangement of the motor switch in the hand-held power tool.

[0028] Preferably, the motor switch is designed as a motor on switch, wherein the spring element acts on the actuating element by striking the tool holder in a direction away from the motor on switch to deactivate the drive motor.

[0029] Thus, a permanent deactivation of the hand-held power tool can be easily and simply achieved by not activating the motor switch, which can be ended in a simple way by striking the tool holder and thus striking the actuating element against the motor switch. Brief description of the drawings

[0030] The invention is explained in more detail below with reference to exemplary embodiments illustrated in the drawings. The drawings show: Fig. 1 a side view of a hand-held power tool according to the invention, Fig. 2 a schematic view of the hand-held power tool of Fig. 1 with a circuit board, Fig. 3 a schematic view of the hand-held power tool from Fig. 1 and Fig. 2 with a printed circuit board according to a further embodiment, Fig. 4 a schematic view of the hand-held power tool of Fig. 1 bis Fig. 3 with an alternative circuit board, Fig. 5 a perspective exploded view of one of the hand-held power tools from Fig. 1 bis Fig. 4 associated tool holder with an associated activation unit, Fig. 6 a longitudinal section through a drive unit associated with the hand-held power tool in the activated state, Fig. 7 an enlarged view of the longitudinal section through the drive unit of Fig. 6 In the deactivated state, Fig. 8 shows an enlarged view of the longitudinal section through the drive unit of Fig. 6 and Fig. 7 in the activated state with a torque clutch, Fig. 9 an enlarged view of the longitudinal section through the drive unit of Fig. 6 and Fig. 7 in the deactivated state with the torque clutch from Fig. 8 , Fig. 10 a schematic view of the hand-held power tool of Fig. 1 bis Fig. 9 with a motor switch assigned to the activation unit at another position, Fig. 11 an enlarged view of the longitudinal section through the drive unit of Fig. 6 and Fig. 7 , in the deactivated state of the motor switch of Fig. 10 , and Fig. 12 an enlarged view of the longitudinal section of Fig. 11 in the activated state of the motor switch of Fig. 10 and Fig. 11 . Description of the exemplary implementations

[0031] In the figures, elements with the same or comparable function are given identical reference symbols and described in detail only once.

[0032] Fig. 1 Figure 1 shows an exemplary hand-held power tool 100, which for illustrative purposes has an elongated housing 110. Due to the elongated housing 110, the hand-held power tool 100 is thus designed in an exemplary "rod" shape.

[0033] Preferably, the hand-held power tool 100 is designed as a screwdriver, in particular as a stick screwdriver. According to one embodiment, the hand-held power tool 100 can be mechanically and electrically connected to a power supply unit 150 for mains-independent power supply. Preferably, the power supply unit 150 is designed as a battery pack.

[0034] Preferably, at least one drive motor 140 for driving a tool holder 120 is arranged in the elongated housing 110. The tool holder 120 is preferably associated with an internal receptacle 125 for receiving an insert tool 190, e.g., a screwdriver bit or a drill bit.

[0035] The elongated housing 110 preferably has a cylindrical base body with a first axial end 101 and an opposing second axial end 102, wherein, for example, the tool holder 120 is arranged in the region of the first axial end 101. For illustrative purposes, a longitudinal direction 105 of the elongated housing 110 is formed between the first and second axial ends 101, 102. The tool holder 120 is preferably associated with an axis of rotation 129. Furthermore, the elongated housing 110 has a circumferential direction 106.

[0036] At the in Fig. 1 In the hand-held power tool 100 shown, the tool holder 120, the drive motor 140, and the housing 110 with a grip area 115 and a cover 117 are arranged along a common axis of rotation, preferably the axis of rotation 129 of the tool holder 120. Preferably, all elements of the hand-held power tool 100 are arranged in the elongated housing 110. Thus, in the hand-held power tool 100, the battery pack 150 is also preferably arranged in the housing 110, in contrast to a hand-held power tool with a pistol-shaped housing in which the battery pack is arranged perpendicular to the drive motor, which is well known from the prior art.

[0037] Furthermore, a slide switch 170 is preferably provided, which is arranged on the housing 110 to activate a reversing operation of the drive motor 140. Likewise, the housing 110 preferably has a torque adjusting sleeve 130 at its axial end 101. In addition, the cover 117 is preferably arranged at the axial end 102 of the elongated housing 110 facing away from the tool holder 120.

[0038] According to one embodiment, an activation unit 189 is provided for activating the drive motor 140 by striking the tool holder 120, or the insert tool 190 arranged or held in the tool holder 120, against a workpiece to be machined. A corresponding axial impact on the tool holder 120 or the insert tool 190, and thus on the tool holder 120, i.e., an impact in the axial direction, preferably occurs in the longitudinal direction 105 against the workpiece to be machined. Here, an impact, particularly an axial one, of at least 0.1 Nm on the tool holder 120 preferably activates the drive motor 140. In general, in this description, the terms "axial" or "in the axial direction" are to be understood as a direction in the longitudinal direction 105 of the housing 110, in particular a direction coaxial or parallel to the axis of rotation 129 of the tool holder 120.

[0039] The activation unit 189 is preferably arranged along a longitudinal axis 128 between the drive motor 140 and the first axial end 101 of the housing 110 or an end face 103 of the housing 110. For illustrative purposes, the longitudinal axis 128 corresponds to the axis of rotation 129. The drive motor 140 is preferably activated by moving the tool holder 120 along the longitudinal axis 128 of the hand-held power tool 100. For this purpose, the activation unit 189 has a motor switch 185 arranged in the area of ​​the tool holder 120. Preferably, the motor switch 185, which is preferably designed as a motor off switch 200, is arranged on or in the area of ​​the end face 103 of the housing 110. Furthermore, the tool holder 120 preferably has an actuating element (230 in Fig. 2 ) assigned to actuate motor switch 185.

[0040] Preferably, the motor cut-off switch 200 is arranged between the drive motor 140 and the end face 103. The motor switch 185 or the motor cut-off switch 200 is preferably associated with the activation unit 189. Preferably, the actuating element (230 in Fig. 2 ) by a spring element 180 in a direction 199 pointing away from the drive motor 140 against the motor switch 200, thereby deactivating the drive motor 140.

[0041] Preferably, the spring element 180 can be compressed by applying pressure to the tool holder 120 in the direction of the drive motor 140, i.e., in a direction 198 pointing towards the drive motor 140. This releases the motor cut-out switch 200 via the actuating element (230 in Fig. 2 ) and thus activation of the drive motor 140. When the tool holder 120 or the insert tool 190 arranged in the tool holder 120 is pressed against the workpiece to be machined, the actuating element (230 in Fig. 2 ) preferably spaced away from the motor switch 200 and the drive motor 140 is activated.

[0042] Fig. 2 The hand-held power tool 100 is shown by Fig. 1 with its drive unit 220. The drive unit 220 comprises at least the drive motor 140. According to one embodiment, a gearbox 210 is associated with the drive unit 220. Preferably, the gearbox 210 is designed as a planetary gearbox.

[0043] Furthermore, it clarifies Fig. 2 The arrangement of the spring element 180 between the gearbox 210 and the tool holder 120. In particular, the spring element 180 is in an internal recess (520 in Fig. 5 ) of the tool holder 120. Preferably, the spring element 180 is designed as a coil spring.

[0044] For illustrative purposes, the activation unit 189 is arranged between the insert tool 190 and the tool holder 120. The activation unit 189 has a circuit board 240 on which the motor cut-off switch 200 is arranged. Furthermore, an actuating element 230 for actuating the motor switch 185 or the motor cut-off switch 200 is assigned to the activation unit 189. The actuating element 230 is preferably located on an outer circumference (582 in Fig. 5 The circuit board 240 is preferably attached to the housing 110 and is preferably located in the region of the end face 103 of the elongated housing 110. In particular, the circuit board 240 is preferably connected to a control electronics unit 250 for controlling the drive motor 140. The control electronics unit 250 is preferably arranged at a distance from the circuit board 240. In particular, the control electronics unit 250 is preferably located in the region of a side of the drive motor 140 facing the second axial end 102 of the housing 110.

[0045] Fig. 3 The hand-held power tool 100 is shown by Fig. 2 with its drive unit 220, wherein LEDs 310 are assigned to the circuit board 240 for illustrative purposes. Preferably, the LEDs 310 are provided to form a work area illumination. For this purpose, the LEDs 310 are arranged, by way of example, on one side of the circuit board 240 facing the end face 103 of the housing 110.

[0046] Fig. 4 The hand-held power tool 100 is shown by Fig. 2 and Fig. 3 with its drive unit 220, wherein at least one sensor 410 is preferably assigned to the circuit board 240. Preferably, the at least one sensor 410 is configured for distance measurement, speed measurement and / or torque measurement. Here, the at least one sensor 410 is preferably arranged on a side of the circuit board 240 facing the end face 103 of the housing 110. It is noted that the circuit board 240 can alternatively also simultaneously transmit the LEDs 310 of Fig. 3 and which can have at least one 410 sensor. Fig. 5 shows the tool holder 120 of the hand-held power tool from Fig. 1 bis Fig. 4 with the activation unit 189. The tool holder 120 has, for illustrative purposes, a cylindrical base body with the internal receptacle 125 for receiving the insert tool 190. Fig. 1 bis Fig. 4 Furthermore, the tool holder 120 has an outer circumference 582 for arranging the actuating element 230. In addition, the tool holder 120 preferably has a support element 580 on its outer circumference 582. The support element 580 is preferably designed as a circumferential collar, but can also be formed only partially, e.g., as a web, on the outer circumference 582. In particular, the support element 580 is preferably formed integrally with the tool holder 120.

[0047] The support element 580 is preferably designed to support the actuating element 230 in the longitudinal direction 105. The actuating element 230 preferably has a disc-shaped base body with an internal recess 512 through which the actuating element 230 can be positioned on the outer circumference 582 of the tool holder 120. In particular, this results in a positive-locking connection between the actuating element 230 and the tool holder 120. The actuating element 230 is secured to the tool holder 120 in the longitudinal direction 105, or towards its first axial end 101, by a locking element 505. Preferably, the locking element 505 is designed as a retaining ring. In this configuration, the actuating element 230 rests against the support element 580 and is axially secured by means of the locking element 505. The locking element 505 is arranged in a positioning groove 585, which is formed on the outer circumference 582 of the tool holder 120.

[0048] Furthermore, the actuating element 230 preferably has at least one, or for illustrative purposes two, radially outwardly extending actuating sections 510 on its outer circumference. The actuating sections 510 are preferably arranged diametrically opposite each other. The actuating sections 510 are designed as webs. The actuating element 230, and in particular the actuating sections 510, are preferably designed to actuate the motor switch 185 or the motor off switch 200.

[0049] Preferably, the circuit board 240 is arranged in the housing 110, particularly in the torque adjusting sleeve 130, via a retaining element 560. The retaining element 560 preferably has a disk-shaped base body with a recess 562. The recess 562 is designed such that the motor cut-off switch 200 can be arranged in it, as shown in Fig. 6 shown. Preferably, the circuit board 240 is fixed to the holding element 560 via screw elements 565.

[0050] The tool holder 120 has at its drive motor 140 of Fig. 1 bis Fig. 4 The side facing the tool holder preferably has an internal recess 520 for receiving the spring element 180. Furthermore, the gearbox 210 preferably has an output element 550, wherein the output element 550 engages in the internal recess 520 of the tool holder 120. The tool holder 120 is also preferably axially displaceable relative to the output element 550. It should be noted that the drive unit 220 is preferably Fig. 2 bis Fig. 4 The housing 110 is axially fixed, and only the tool holder 120 is axially displaceable. This allows the use of a mechanical coupling.

[0051] Preferably, the output element 550 has an internal recess 555 for the sectional reception of the spring element 180. The spring element 180 is arranged between the output element 550, in particular the internal recess 555, and the tool holder 120, in particular the internal recess 520. Preferably, the internal recess 555 of the output element 550 has a central positioning pin 556, which is designed to center the spring element 180 in the internal recess 520. Preferably, a single spring element 180 is provided. However, several spring elements 180 arranged in series can also be arranged in the internal recess 520 of the tool holder 120.

[0052] Preferably, the gearbox 210 has at least one bearing element 530 for rotatably mounting the tool holder 120. The bearing element 530 is preferably located between the tool holder 120 and a gearbox housing (610, 620). Fig. 6 ) arranged. Preferably, the bearing element 530 is designed as a bearing bushing and / or sliding bearing.

[0053] Fig. 6 The drive unit 220 of the hand-held power tool is shown. Fig. 1 bis Fig. 5 This clarifies Fig. 6 The gearbox 210 is arranged in a gearbox housing 610, 620. Preferably, the gearbox housing 610, 620 has a housing part 610 facing the tool holder 120 and a housing part 620 facing the drive motor 140. Preferably, an end face 690 of the gearbox housing 610, 620, in particular of the housing part 610, facing the tool holder 120, serves as the axial contact surface of the actuating element 230 when the drive motor 140 is deactivated.

[0054] Furthermore, a torque coupling (890 in) is preferred. Fig. 8 ) provided, which includes a torque adjusting device 650. The torque adjusting device 650 comprises the torque adjusting sleeve 130 for setting a predefinable torque and a spring retaining ring 630. The torque adjusting sleeve 130 is preferably directly connected to the spring retaining ring 630 via a toothed connection 632, 642. The torque adjusting sleeve 130 preferably has an internal thread 642 on its inner circumference, and the spring retaining ring 630 has an external thread 632 on its outer circumference for forming the toothed connection 632, 642.

[0055] In Fig. 6 The drive motor 140 is activated by way of example. A gap 660 is preferably formed between the actuating element 230 or the actuating section 510 and the motor switch 185 or the motor off switch 200. The gap 660 is created by the force being applied to the tool holder 120, which compresses the spring element 180. The tool holder 120 preferably rests against the end face 690 of the housing part 610 with the support element 580.

[0056] To activate the drive motor 140, the tool holder 120, or the insert tool 190 arranged in the tool holder 120, is pressed against a workpiece to be machined, causing the tool holder 120 to move in the direction 198 towards the drive motor 140. This creates a distance of 660 between the actuating element 230 or the actuating section 510 and the motor cut-off switch 200, thus activating the drive motor 140.

[0057] Furthermore, it clarifies Fig. 6 The arrangement of the bearing element 530 between the housing part 610 and the outer circumference 582 of the tool holder 120 is shown. The arrangement of the actuating element 230 on the outer circumference 582 of the tool holder 120 and the axial fixation of the actuating element 230 by the locking element 505 arranged in the positioning groove 585 are also shown. Furthermore, the arrangement of the motor cut-off switch 200 in the recess 562 is illustrated. Preferably, a spindle lock 590 is associated with the output element 550. Such a spindle lock 590 is sufficiently known from the prior art, which is why a detailed description is omitted here.

[0058] Fig. 7 The drive unit 220 is shown. Fig. 6 with the activation unit 189. In Fig. 7 The drive motor 140 is deactivated by way of example, with the actuating element 230 or the actuating section 510 preferably arranged on the motor switch 200, since the tool holder 120 is not actuated, or the spring element 180 is not compressed. The tool holder 120, or the support element 580, is spaced apart from the end face 690 of the housing part 610.

[0059] To deactivate the drive motor 140, the tool holder 120, or the insert tool 190 arranged in the tool holder 120, is spaced away from a workpiece to be machined, with the tool holder 120 being positioned in the direction 199 pointing away from the drive motor 140. Fig. 1 shifts into its rest position. In doing so, the actuating element 230 or the actuating section 510 is preferably moved towards the motor cut-off switch 200, thereby reducing the distance 660 to zero and deactivating the drive motor 140. It should be noted that the motor cut-off switch 200 is actuated by the actuating section 510 when it is in contact with it.

[0060] Fig. 8 shows the tool holder 120 with the activation unit 189 of Fig. 1 bis Fig. 7 and a torque coupling 890 arranged on the outer circumference 582 of the tool holder 120. The torque coupling 890 is preferably arranged on the outer circumference 582 of the tool holder 120 at an end of the tool holder 120 facing the drive motor 140. In particular, the torque coupling 890 is preferably arranged on the outer circumference 582 in the region of the inner receptacle 520. Preferably, the torque coupling 890 is designed as a mechanical coupling. Such a torque coupling 890 is sufficiently known from the prior art, so that a detailed description is omitted here for the sake of brevity. Spring elements 810 are preferably arranged between the spring retaining ring 630 and a transmission element 820 or pressure plate associated with the torque coupling 890 and facing the drive motor 140. These spring elements 810 are preferably designed as compression springs.

[0061] The spring elements 810 are preferably associated with the transmission element 820 or pressure plate, which is subjected to pressure in the direction of the drive motor 140. Preferably, the spring elements 810 or the compression springs are arranged at uniform intervals around their circumference.

[0062] Between the preferably at least approximately disc-shaped transmission element 820 and an end face of the gearbox 210 facing the tool holder 120, at least two, preferably three, and preferably six actuation elements 830 are also arranged. The actuation elements 830 are preferably cylindrical.

[0063] In Fig. 8 Is the drive motor 140 analogous to Fig. 6 activated by way of example, wherein the distance 660 is formed between the actuating element 230 and the motor switch 200.

[0064] Fig. 9 shows the tool holder 120 with the activation unit 189 of Fig. 1 bis Fig. 8 and the torque clutch 890 from Fig. 7 , with drive motor 140 deactivated. This is analogous to Fig. 7 the actuating element 230 on the motor switch 200.

[0065] Fig. 10 The hand-held power tool 100 is shown by Fig. 1 bis Fig. 9 with its drive unit 220, the circuit board 240 with LEDs 310 from Fig. 3 and at least one sensor 410. According to a further embodiment, the motor switch 185 is now designed as a motor on / off switch 1000. Preferably, the motor on / off switch 1000 is arranged on the end face 690 of the gearbox housing, in particular of the first housing part 610.

[0066] Fig. 11 shows the tool holder 120 with the activation unit 189 of Fig. 10 and the torque clutch 890 from Fig. 7 In Fig. 11 The distance 660 between the motor switch 1000 and the actuating element 230 or the actuating section 510 is formed, thereby deactivating the drive motor 140. Furthermore, it is illustrated that Fig. 11 the arrangement of the motor switch 1000 on the end face 690 of the gearbox housing, in particular of the first housing part 610.

[0067] To deactivate the drive motor 140, the tool holder 120, or the insert tool 190 arranged in the tool holder 120, is moved away from the workpiece to be machined, whereby the tool holder 120 moves into its rest position in the direction 199 away from the drive motor 140. In this way, a distance 660 is created between the actuating section 510 and the motor switch 1000, so that the motor switch 1000 is not actuated, and the drive motor 140 is deactivated.

[0068] Fig. 12 shows the tool holder 120 with the activation unit 189 of Fig. 10 and Fig. 1 , with the drive motor 140 activated. The actuating element 230 or the actuating section 510 is in contact with the motor switch 1000, due to the actuation of the tool holder 120 and the resulting compression of the spring element 180.

[0069] To activate the drive motor 140, the tool holder 120, or the insert tool 190 arranged in the tool holder 120, is pressed against a workpiece to be machined, causing the tool holder 120 to move in the direction 198 towards the drive motor 140. In this process, the actuating element 230, or the actuating section 510, is preferably moved towards the motor start switch 1000, thereby reducing the distance 660 such that the motor start switch 1000 is actuated and the drive motor 140 is activated. It should be noted that the motor start switch 1000 is preferably designed as a push-button switch or momentary switch, which is pressed by the actuating section 510.

[0070] It should be noted that in the embodiments described above, the motor switch 185 is preferably designed as a switching element, in particular as a push button or pressure switch. Alternatively, the motor switch 185 and the actuating element 230 can, for example, be designed as contactable contact elements which, when connected to each other, form an electrical connection to the drive motor 140 or enable a power supply to the drive motor 140.

Claims

1. Portable power tool (100), in particular screwdriver, having an elongate housing (110), in which a drive unit (220) having at least one drive motor (140) for driving a tool receptacle (120) is arranged, wherein the tool receptacle (120) is configured to receive an application tool (190), and having an activation unit (189) for activating the drive motor (140), wherein, as a result of an application tool (190) arranged in the tool receptacle (120) being pressed against a workpiece to be worked on, in particular along a longitudinal axis (128) of the portable power tool (100), the drive motor (140) is activated, characterized in that the activation unit (189) has a motor switch (185), arranged in the region of the tool receptacle (120), and an actuating element (230), arranged on the outer circumference (582) of the tool receptacle (120), for actuating the motor switch (185), wherein the tool receptacle (120) has an inner receptacle (520), facing the drive motor (140), for receiving a spring element (180) assigned to the activation unit (189), said spring element (180) acting on the actuating element (230) by pressing the tool receptacle (120) for deactivating the drive motor (140) in a direction (199) away from the drive motor (140).

2. Portable power tool according to Claim 1, characterized in that the spring element (180) is compressible by the tool receptacle (120) being pressed in the direction of the drive motor (140), in order to allow the motor switch (185) to be enabled or actuated by the actuating element (230) and thus to allow the drive motor (140) to be activated.

3. Portable power tool according to Claim 1 or 2, characterized in that the tool receptacle (120) has a torque clutch (890) on its outer circumference (582) in the region of the inner receptacle (520).

4. Portable power tool according to Claim 3, characterized in that the torque clutch (890) has a setting sleeve (130) for setting a predefinable torque, and a spring retaining ring (630), wherein the setting sleeve (130) is directly connected to the spring retaining ring (630) via a toothing (632, 642).

5. Portable power tool according to Claim 3 or 4, characterized in that the tool receptacle (120) has a supporting element (580) on its outer circumference (582), wherein the actuating element (230) bears on the supporting element (580) and is axially secured by means of a securing element (505).

6. Portable power tool according to one of the preceding claims, characterized in that the drive unit (220) has a transmission (210), in particular a planetary transmission, and the transmission (210) is arranged in a transmission housing (610, 620), wherein an end face (690), facing the tool receptacle (120), of the transmission housing (610, 620) serves as an axial bearing surface for the actuating element (230) with the drive motor (140) deactivated.

7. Portable power tool according to Claim 6, characterized in that the transmission (210) has an output element (550), wherein the output element (550) engages in the inner receptacle (520) of the tool receptacle (120).

8. Portable power tool according to Claim 7, characterized in that the tool receptacle (120) is configured to be axially displaceable with respect to the output element (550).

9. Portable power tool according to Claim 7 or 8, characterized in that the output element (550) has an inner receptacle (555) for receiving the spring element (180), wherein the spring element (180) is arranged between the output element (550), in particular the inner receptacle (555), and the tool receptacle (120), in particular the inner receptacle (520).

10. Portable power tool according to one of Claims 6 to 9, characterized in that the transmission (210) has at least one bearing element (530) for rotatably mounting the tool receptacle (120), wherein the bearing element (530) is arranged between the tool receptacle (120) and the transmission housing (610, 620).

11. Portable power tool according to one of the preceding claims, characterized in that the activation unit (189) has a circuit board (240) that is arranged in the elongate housing (110) in the region of an end side (103) of the elongate housing (110), wherein the motor switch (185) is arranged on the circuit board (240) and is in the form of a motor off switch (200), and wherein the spring element (180) acts on the actuating element (230) by pressing the tool receptacle (120) for deactivating the drive motor (140) against the motor off switch (200).

12. Portable power tool according to one of Claims 6 to 10, characterized in that the motor switch (185) is arranged on an end face (690) of the transmission housing (610, 620), said end face (690) facing a first axial end (101) of the housing (110).

13. Portable power tool according to Claim 12, characterized in that the motor switch (185) is in the form of a motor on switch (1000), wherein the spring element (180) acts on the actuating element (230) by pressing the tool receptacle (120) for deactivating the drive motor (140) in a direction (199) away from the motor on switch (1000).

Images