EP2655019B1 - Portable power tool - Google Patents

Portable power tool Download PDF

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Publication number
EP2655019B1
EP2655019B1 EP11796651.5A EP11796651A EP2655019B1 EP 2655019 B1 EP2655019 B1 EP 2655019B1 EP 11796651 A EP11796651 A EP 11796651A EP 2655019 B1 EP2655019 B1 EP 2655019B1
Authority
EP
European Patent Office
Prior art keywords
clutch housing
power tool
drilling
portable power
mode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP11796651.5A
Other languages
German (de)
French (fr)
Other versions
EP2655019A1 (en
Inventor
Joachim Hecht
Heiko Roehm
Martin Kraus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2655019A1 publication Critical patent/EP2655019A1/en
Application granted granted Critical
Publication of EP2655019B1 publication Critical patent/EP2655019B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D16/00—Portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D16/006—Mode changers; Mechanisms connected thereto
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/141—Mechanical overload release couplings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2211/00—Details of portable percussive tools with electromotor or other motor drive
    • B25D2211/06—Means for driving the impulse member
    • B25D2211/062—Cam-actuated impulse-driving mechanisms
    • B25D2211/064—Axial cams, e.g. two camming surfaces coaxial with drill spindle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D2216/0007—Details of percussion or rotation modes
    • B25D2216/0023—Tools having a percussion-and-rotation mode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D2216/0007—Details of percussion or rotation modes
    • B25D2216/0038—Tools having a rotation-only mode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D2216/0084—Mode-changing mechanisms
    • B25D2216/0092—Tool comprising two or more collaborating mode-changing mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/165—Overload clutches, torque limiters

Definitions

  • the present invention relates to a hand machine tool according to the preamble of claim 1 for operation in percussion drilling, drilling and screwing mode, which has a mode setting device with an actuating element and an adjusting element and a gear for driving an output shaft, the actuating element and the adjusting element being rotationally fixed to one another are connected and the adjusting element is coupled at least in one operating mode to a transmission element which is mounted on a clutch housing assigned to the transmission and is axially displaceable in a screwing position assigned to the screwing mode on the clutch housing and in the percussion drilling and drilling mode assigned percussion drilling and drilling positions on the clutch housing is axially fixed.
  • Such a handheld power tool is, for example, from the EP 2 216 114 A2 out.
  • Such a hand-held power tool is known with a drive device provided for driving an output shaft, which has a drive unit and a gearbox coupled to the drive unit.
  • This handheld machine tool can be operated in various operating modes, which are an impact drilling, drilling and screwing mode. In the percussion drilling and drilling mode there is a fixed torque coupling between the output shaft and the drive device, whereas in the screwing mode a maximum of an adjustable torque can be transmitted.
  • a mode setting device is used to set the operating modes, which comprises a mode setting sleeve which can be rotated by manual actuation and a transmission element which is non-rotatably coupled to the mode setting sleeve and which is supported on a clutch housing assigned to the transmission.
  • the mode setting sleeve and the transmission element are rotatably mounted about the longitudinal axis of the output shaft, so that the transmission element also carries out corresponding rotary adjustment movements of the mode setting sleeve.
  • each of the different operating modes is assigned a predetermined rotational position of the mode setting sleeve and the transmission element.
  • a disadvantage of the prior art is that there is usually a predetermined axial play between the transmission element and the mode setting sleeve, which can increase due to wear over the life of the hand tool. It is therefore difficult to achieve a safe and precise mode setting over a comparatively long operating period of the hand tool.
  • a hand tool for operation in percussion drilling, drilling and screwing mode, which has a mode setting device with an actuating element and an adjusting element and a gear for driving an output shaft.
  • the actuating element and the adjusting element are connected to one another in a rotationally fixed manner, and the adjusting element is coupled, at least in one operating mode, to a transmission element which is mounted on a clutch housing assigned to the transmission and is axially displaceable in a screwing position assigned to the screwing mode on the clutch housing and in the percussion drilling and drilling mode assigned percussion drilling and drilling positions on the clutch housing is axially fixed.
  • the transmission element is non-rotatably connected to the clutch housing and a predetermined operating mode can be set by rotating the setting element. Adjustment element and transmission element can be rotated relative to one another and the adjustment element engages around the transmission element at least in sections.
  • the invention thus makes it possible to provide a hand-held power tool that can be realized with a reduced size and a reduced number of components and has a robust and reliable mode setting device in which different operating modes can be set reliably over a long operating period.
  • the transmission element is disc-shaped.
  • the transmission element preferably has fixing members, by means of which the transmission element is fixed in a rotationally fixed manner on the clutch housing.
  • the transmission element can thus be securely and reliably fixed in a rotationally fixed manner on the clutch housing.
  • the fixing members preferably have radially outward extensions by means of which the transmission element is axially fixed to the clutch housing in percussion drilling and drilling mode.
  • the transmission element can thus be axially fixed to the clutch housing in a simple manner in the percussion drilling and drilling mode.
  • the adjusting element is fixed substantially immovably on the clutch housing in the axial direction.
  • a simple and inexpensive adjusting element can thus be provided.
  • the fixing elements have holding elements which are designed to axially fix the adjusting element on the clutch housing.
  • the adjusting element can thus be fixed axially on the clutch housing in a simple manner.
  • the fixing elements preferably have blocking elements, via which the transmission element in the percussion drilling and drilling mode is axially fixed in the assigned percussion drilling or drilling position on the coupling housing, the blocking elements releasing the transmission element in the screwing mode in the axial direction.
  • the invention thus makes it possible to provide a mode setting device in which a path limitation or force absorption of a force introduced via the output shaft is made possible by the adjusting element in a simple manner.
  • a simple and reliable actuating element can thus be provided.
  • At least one spring element is provided which is designed to axially apply a predetermined spring force to the transmission element in the direction of the percussion drilling and drilling position.
  • the predefined spring force can preferably be set within predefined limits via an assigned torque setting device.
  • the transmission element 170 is disc-shaped in the manner of a pressure plate or a pressure ring and is therefore also referred to below in this way.
  • the pressure ring 170 illustratively has fixing members 177, 172, 173, 174 and 175-176 ( Fig. 4 and 5 ) and 471, 476 and 472-475, by means of which the pressure ring 170 is fixed to the clutch housing 130 in a rotationally fixed manner.
  • These have, for example, projections 177, 172, 173, 174 and 175-176 (directed radially outwards) ( Fig. 4 and 5 ) and radially inward, bead-like extensions 471, 476 and 472-475 ( 4 to 6 ) on.
  • the radially inward extensions 471, 476 and 472-475 ( 4 to 6 ) are in the axially aligned grooves 481, 486 and 482-485 ( 4 to 6 ) of the clutch housing 130 is arranged.
  • the radially outward projections 177, 172, 173, 174 and 175-176 each include an associated force transmission member 183, 185, 187 of the clutch housing 130.
  • the projections 172, 173 comprise the force transmission member 183.
  • the radially outward projections 177, 172, 173, 174 and 175-176 ( Fig.
  • the mode setting device 150 has, for example, an illustrative sleeve-shaped actuating element 155, which is therefore also referred to below as the actuating sleeve or mode-adjusting sleeve, and the adjusting element 110 which is non-rotatably connected to this, which is illustratively also sleeve-shaped and is also referred to below as the switching sleeve.
  • An exemplary attachment of the actuating sleeve 155 to the switching sleeve 110 via radial extensions (491, 493, 495 in.) Provided on the switching sleeve 110 4 to 6 ) is at 4 to 6 described.
  • the actuating sleeve 155 is rotatably mounted on the clutch housing 130 via the switching sleeve 110 about the longitudinal axis of the output shaft 140.
  • the operating modes impact drilling, drilling and screwing can be set by a corresponding rotation of the actuating sleeve 155 and thus of the switching sleeve 110.
  • blocking webs 111, 115 and 113 are designed as radially inward projections formed on the inner circumference of the switching sleeve 110.
  • the switching sleeve 110 When the switching sleeve 110 is mounted on the clutch housing 130, the switching sleeve 110 is pushed onto the clutch housing 130 in such a way that the holding webs 112, 114, 116 initially along the outer circumference of the pressure ring 170 through the interruptions 182, 184 and 186 ( Fig. 4 ) reach through. Then the switching sleeve 110 z. B. rotated clockwise so that the retaining webs 112, 114, 116 engage behind the ring collar 180 and thus in connection with the blocking webs 111, 115 and 113 ( 4 to 6 ) axially fix the switching sleeve 110 to the ring collar 180 in the manner of a bayonet connection.
  • a latching element is arranged between the switching sleeve 110 and the clutch housing 130, which enables the switching sleeve 110 to be locked in the assigned rotational positions on the clutch housing 130, these rotational positions being assigned to the different operating modes of the handheld power tool 100.
  • suitable latching elements are sufficiently known to the person skilled in the art, e.g. B. detent springs, so that for the sake of conciseness of the description, a detailed description of a specific detent element is dispensed with.
  • the torque setting device 160 illustratively has a torque setting sleeve 165 which is arranged downstream of the actuation or mode setting sleeve 155 in the axial direction of the output shaft 140 and can be actuated independently thereof or rotated about the longitudinal axis of the output shaft 140.
  • the maximum torque that can be transmitted by the handheld power tool 100 in the screwing mode can be set via the torque setting sleeve 165.
  • Fig. 2 shows a sectional view of the detail of the hand machine tool 100 of FIG Fig. 1 with the gear 120, the mode setting device 150, the torque setting device 160 and the output shaft 140, in which the cut is made approximately perpendicular to the sheet plane.
  • the transmission 120 is designed, for example, as a planetary transmission with three planetary stages. Since the basic structure and mode of operation of planetary gears are well known to the person skilled in the art are, for the sake of simplicity of description, a detailed description is omitted here.
  • the output shaft 140 is illustratively rotatably supported relative to the clutch housing 130 and the gear housing 122 via two axially spaced ball bearings 214, 215.
  • the output shaft 140 can also perform an axial actuating movement with respect to the clutch housing 130.
  • the second ball bearing 215 is axially fixedly connected to the output shaft 140 and is slidably mounted within a locking pot 216 fixed to the housing.
  • the first ball bearing 214 is arranged fixed to the housing in the clutch housing 130.
  • the output shaft 140 is adjusted between the percussion drilling position and the drilling or screwing position by the axial adjusting movement. In the percussion drilling position, the output shaft 140 - in Fig.
  • the detent 216 comes into detent engagement with a detent disc 217, which is seated in a rotationally fixed manner on the outer surface of the output shaft 140 and forms a detent mechanism with the detent 216.
  • the locking disk 217 also has the task of axially fixing the ball bearing 215, which is also seated on the outer surface of the output shaft 140.
  • a spring element 218 is arranged within the locking pot 216, which forces the output shaft 140 via a locking part 223 and the ball bearing 215 into an assigned, non-locking position, in which the locking pot 216 and the locking disc 217 are not in engagement.
  • the locking part 223 lies on the deactivation bars 118 and 117, 119 ( Fig. 1 ), so that the locking disc 217 is axially spaced from the bottom of the locking pot 216 and thus the locking mechanism of the hand tool 100 is deactivated. This deactivation is carried out in screw mode ( Fig. 4 ) and in drilling mode ( Fig. 5 ) realized. In percussion drilling mode ( Fig. 6 ) the locking part 223 is not on the deactivation bars 118 and 117, 119 ( Fig. 1 ) on, so that locking disc 217 and locking cup 216 can engage in locking engagement as described above.
  • Fig. 3 shows a sectional view of the detail of the hand machine tool 100 of FIG Fig. 1 with the gear 120, the mode setting device 150, the torque setting device 160 and the output shaft 140, in which the cut approximately in the plane of the sheet Fig. 1 is executed.
  • Fig. 3 illustrates an exemplary design of the as in Fig. 1 Described via a bayonet connection with the switching sleeve 110 connected to the clutch housing 130, the holding web 112 directed radially inwards illustratively engaging in an annular groove 399 which is provided in the region of the annular collar 180 of the clutch housing 130.
  • the radially outward projection 172 and a further radially outward projection 175 of the pressure ring 170 are shown.
  • the handheld power tool 100 has one of the spring retaining ring 213 and a plurality of spring elements 311, 314 and 312, 313, 315, 316 ( 4 to 6 ) trained spring device, which is designed to set a maximum transferable torque in the screwing mode of the hand power tool 100.
  • the spring elements 311, 314 and 312, 313, 315, 316 ( 4 to 6 ) are arranged on the clutch housing 130 distributed over the circumference and are designed, for example, as helical compression springs.
  • the spring elements 311, 314 and 312, 313, 315, 316 ( 4 to 6 ) between the spring retaining ring 213 and the pressure ring 170.
  • the spring retaining ring 213 is, for example, axially displaceable relative to the output shaft 140 and, when the torque setting sleeve 165 rotates, moves axially relative to the output shaft 140 due to the screw connection with the torque setting sleeve 165, as a result of which the prestressing of the spring elements 311, 314 and 312, 313, 315, 316 ( 4 to 6 ) changes which act on the pressure ring 170 with an axial force corresponding to the preload against the clutch housing 130. With increasing preload of the spring elements 311, 314 and 312, 313, 315, 316 ( 4 to 6 ) the axial force which is exerted on the pressure ring 170 thereby also increases.
  • the balls 389 are illustratively mounted in assigned openings 387 on the clutch housing 130 and are arranged in the axial direction of the output shaft 140 between an end face of the locking disk 391, on which a coupling structure 392 is formed, and the pressure ring 170.
  • a suitable coupling structure can, for example have a plurality of axial elevations and is sufficiently known to the person skilled in the art, so that for the sake of conciseness of the description there is no detailed description of the coupling structure 392.
  • the mode of operation of a suitable torque clutch is sufficiently known to the person skilled in the art, so that an in-depth description is also omitted here for the sake of conciseness of the description.
  • Fig. 4 shows a top perspective view of the clutch housing 130 of FIG 1 to 3 rotatably mounted output shaft 140 from 1 to 3 with the mode setting device 150 of 1 to 3 to illustrate a setting of the mode setting device 150 for an operation of the hand machine tool 100 of 1 to 3 in screw mode.
  • the actuating sleeve 155 and with this the switching sleeve 110 are rotated into a predetermined screwing position.
  • Fig. 4 on an image of the torque setting device 160 from 1 to 3 waived.
  • Fig. 4 a sectional view of clutch housing 130, shift sleeve 110 and pressure ring 170 of 1 to 3 shown, cut in the area of the blocking webs 111, 113, 115 of the switching sleeve 110 in order to illustrate the interaction of these components in the screwing mode.
  • the clutch housing 130 illustratively has an approximately central opening 499 for the passage of the output shaft 140.
  • Fig. 4 illustrates this in screw mode, as with Fig. 2 described, on the deactivation webs 117, 118, 119 of the switching sleeve 110 resting locking part 223 and the screws 221, 422, 423 screwed to the clutch housing 130 as an example.
  • clarified Fig. 4 an exemplary rotationally fixed connection of the switching sleeve 110 to the actuating sleeve 155 via radial extensions 491, 493, 495 provided on the outer circumference of the switching sleeve 110, which illustratively engage in associated cutouts 401, 403, 405 provided on the inner circumference of the actuating sleeve 155.
  • the holding webs 112, 114, 116 of the switching sleeve 110 are in the screw mode in the in Fig. 4 predetermined viewing direction at least in sections behind the annular collar 180 of Fig. 1 arranged and their blocking webs 111, 113, 115 are each arranged between assigned radially outward projections 174, 175 or 176, 177 or 172, 173.
  • the blocking webs 111, 113, 115 therefore bear against the force transmission members 185, 187 and 183 of the clutch housing 130 and release the pressure ring 170 in the axial direction. This can thus of the balls 389 of Fig.
  • Fig. 5 shows the perspective top view and the sectional view of Fig. 4 , in the setting of the mode setting device 150 for an operation of the hand machine tool 100 of 1 to 3 in drilling mode, the actuating sleeve 155 and with this the switching sleeve 110 by a predetermined angle, for. B. in Fig. 5 have been turned clockwise into an assigned drilling position.
  • the locking part 223 is also located as in Fig. 2 described, on the deactivation webs 117, 118, 119 of the switching sleeve 110.
  • the holding webs 112, 114, 116 of the switching sleeve 110 are in the drilling mode in the in Fig. 5 predetermined viewing direction at least in sections behind the annular collar 180 of Fig. 1 arranged and their blocking webs 111, 113, 115 block radially outward projections of the pressure ring, illustratively the projections 175, 177 and 173, respectively.
  • the pressure ring 170 is in the axial direction of the output shaft 140 through the blocking webs 111, 113, 115 of the switching sleeve 110 axially fixed and therefore not axially displaceable. The torque clutch is thus deactivated.
  • Fig. 6 shows the perspective top view and the sectional view of Fig. 4 or 5, in which to set the mode setting device 150 for operating the handheld power tool 100 from 1 to 3 in percussion drilling mode, the actuating sleeve 155 and with this the switching sleeve 110 by a predetermined angle, for. B. in Fig. 6 clockwise, in an assigned percussion drilling position were twisted.
  • the locking part 223 is as in Fig. 2 described, not on the deactivation webs 117, 118, 119 of the switching sleeve 110.
  • the holding webs 112, 114, 116 of the switching sleeve 110 are in the in Fig. 6 predetermined viewing direction at least in sections behind the annular collar 180 of Fig. 1 arranged and their blocking webs 111, 113, 115 block radially outward projections of the pressure ring, illustratively the projections 175, 177 and 173 of Fig. 4 and 5 ,
  • the pressure ring 170 in the percussion drilling mode is axially fixed in position in the axial direction of the output shaft 140 by the blocking webs 111, 113, 115 of the switching sleeve 110 and accordingly cannot be axially displaced.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Drilling And Boring (AREA)

Description

Stand der TechnikState of the art

Die vorliegende Erfindung betrifft eine Handwerkzeugmaschine gemäß dem Oberbegriff des Patentanspruchs 1 für einen Betrieb im Schlagbohr-, Bohr- und Schraubmodus, die eine Moduseinstelleinrichtung mit einem Betätigungselement und einem Einstellelement sowie ein Getriebe zum Antrieb einer Abtriebswelle aufweist, wobei das Betätigungselement und das Einstellelement drehfest miteinander verbunden sind und das Einstellelement zumindest in einem Betriebsmodus mit einem Übertragungselement gekoppelt ist, das an einem dem Getriebe zugeordneten Kupplungsgehäuse gelagert ist und in einer dem Schraubmodus zugeordneten Schraubposition am Kupplungsgehäuse axial verschiebbar ist und in dem Schlagbohr- und Bohrmodus zugeordneten Schlagbohr- und Bohrpositionen am Kupplungsgehäuse axial fixiert ist.The present invention relates to a hand machine tool according to the preamble of claim 1 for operation in percussion drilling, drilling and screwing mode, which has a mode setting device with an actuating element and an adjusting element and a gear for driving an output shaft, the actuating element and the adjusting element being rotationally fixed to one another are connected and the adjusting element is coupled at least in one operating mode to a transmission element which is mounted on a clutch housing assigned to the transmission and is axially displaceable in a screwing position assigned to the screwing mode on the clutch housing and in the percussion drilling and drilling mode assigned percussion drilling and drilling positions on the clutch housing is axially fixed.

Eine derartige Handwerkzeugmaschine geht beispielsweise aus der EP 2 216 114 A2 hervor.Such a handheld power tool is, for example, from the EP 2 216 114 A2 out.

Stand der TechnikState of the art

Aus der EP 1 555 091 A2 ist eine derartige Handwerkzeugmaschine mit einer zum Antreiben einer Abtriebswelle vorgesehenen Antriebseinrichtung bekannt, die eine Antriebseinheit sowie ein mit der Antriebseinheit gekoppeltes Getriebe aufweist. Diese Handwerkzeugmaschine kann in verschiedenen Betriebsmodi betrieben werden, bei denen es sich um einen Schlagbohr-, einen Bohr- und einen Schraubmodus handelt. Im Schlagbohr- und Bohrmodus besteht eine feste Drehmomentenkopplung zwischen der Abtriebswelle und der Antriebseinrichtung, wohingegen im Schraubmodus maximal ein einstellbares Drehmoment übertragbar ist. Zur Einstellung der Betriebsmodi dient eine Moduseinstelleinrichtung, welche eine durch manuelle Betätigung verdrehbare Moduseinstellhülse und ein drehfest mit der Moduseinstellhülse gekoppeltes Übertragungselement umfasst, das sich an einem dem Getriebe zugeordneten Kupplungsgehäuse abstützt. Die Moduseinstellhülse und das Übertragungselement sind drehbar um die Längsachse der Abtriebswelle gelagert, sodass das Übertragungselement entsprechende Drehstellbewegungen der Moduseinstellhülse mit ausführt. Somit ist jedem der verschiedenen Betriebsmodi jeweils eine vorgegebene Drehstellung der Moduseinstellhülse und des Übertragungselements zugeordnet.From the EP 1 555 091 A2 Such a hand-held power tool is known with a drive device provided for driving an output shaft, which has a drive unit and a gearbox coupled to the drive unit. This handheld machine tool can be operated in various operating modes, which are an impact drilling, drilling and screwing mode. In the percussion drilling and drilling mode there is a fixed torque coupling between the output shaft and the drive device, whereas in the screwing mode a maximum of an adjustable torque can be transmitted. A mode setting device is used to set the operating modes, which comprises a mode setting sleeve which can be rotated by manual actuation and a transmission element which is non-rotatably coupled to the mode setting sleeve and which is supported on a clutch housing assigned to the transmission. The mode setting sleeve and the transmission element are rotatably mounted about the longitudinal axis of the output shaft, so that the transmission element also carries out corresponding rotary adjustment movements of the mode setting sleeve. Thus, each of the different operating modes is assigned a predetermined rotational position of the mode setting sleeve and the transmission element.

Nachteilig am Stand der Technik ist, dass zwischen dem Übertragungselement und der Moduseinstellhülse üblicherweise ein vorgegebenes axiales Spiel vorhanden ist, das sich durch Abnutzung über die Lebensdauer der Handwerkzeugmaschine vergrößern kann. Somit ist eine sichere und präzise Moduseinstellstellung über einen vergleichsweise langen Betriebszeitraum der Handwerkzeugmaschine nur schwer realisierbar.A disadvantage of the prior art is that there is usually a predetermined axial play between the transmission element and the mode setting sleeve, which can increase due to wear over the life of the hand tool. It is therefore difficult to achieve a safe and precise mode setting over a comparatively long operating period of the hand tool.

Offenbarung der ErfindungDisclosure of the invention

Eine Aufgabe der Erfindung ist es daher, eine neue Handwerkzeugmaschine für einen Betrieb im Schlagbohr-, Bohr- und Schraubmodus bereitzustellen, deren Betriebsmodi auch über einen langen Betriebszeitraum sicher einstellbar sind.It is therefore an object of the invention to provide a new hand-held power tool for operation in percussion drilling, drilling and screwing mode, the operating modes of which can also be set reliably over a long operating period.

Dieses Problem wird gelöst durch eine Handwerkzeugmaschine gemäß dem Patentanspruch 1 für einen Betrieb im Schlagbohr-, Bohr- und Schraubmodus, die eine Moduseinstelleinrichtung mit einem Betätigungselement und einem Einstellelement sowie ein Getriebe zum Antrieb einer Abtriebswelle aufweist. Das Betätigungselement und das Einstellelement sind drehfest miteinander verbunden und das Einstellelement ist zumindest in einem Betriebsmodus mit einem Übertragungselement gekoppelt, das an einem dem Getriebe zugeordneten Kupplungsgehäuse gelagert ist und in einer dem Schraubmodus zugeordneten Schraubposition am Kupplungsgehäuse axial verschiebbar ist und in dem Schlagbohr- und Bohrmodus zugeordneten Schlagbohr- und Bohrpositionen am Kupplungsgehäuse axial fixiert ist. Das Übertragungselement ist drehfest mit dem Kupplungsgehäuse verbunden und ein vorgegebener Betriebsmodus ist durch Drehung des Einstellelements einstellbar. Einstellelement und Übertragungselement sind relativ zueinander verdrehbar und das Einstellelement umgreift das Übertragungselement zumindest abschnittsweise.This problem is solved by a hand tool according to claim 1 for operation in percussion drilling, drilling and screwing mode, which has a mode setting device with an actuating element and an adjusting element and a gear for driving an output shaft. The actuating element and the adjusting element are connected to one another in a rotationally fixed manner, and the adjusting element is coupled, at least in one operating mode, to a transmission element which is mounted on a clutch housing assigned to the transmission and is axially displaceable in a screwing position assigned to the screwing mode on the clutch housing and in the percussion drilling and drilling mode assigned percussion drilling and drilling positions on the clutch housing is axially fixed. The transmission element is non-rotatably connected to the clutch housing and a predetermined operating mode can be set by rotating the setting element. Adjustment element and transmission element can be rotated relative to one another and the adjustment element engages around the transmission element at least in sections.

Die Erfindung ermöglicht somit die Bereitstellung einer Handwerkzeugmaschine, die mit einer reduzierten Baugröße sowie einer reduzierten Anzahl von Bauteilen realisierbar ist und eine robuste und zuverlässige Moduseinstelleinrichtung aufweist, bei der verschiedene Betriebsmodi über einen langen Betriebszeitraum sicher einstellbar sind.The invention thus makes it possible to provide a hand-held power tool that can be realized with a reduced size and a reduced number of components and has a robust and reliable mode setting device in which different operating modes can be set reliably over a long operating period.

Gemäß einer Ausführungsform ist das Übertragungselement scheibenförmig ausgebildet.According to one embodiment, the transmission element is disc-shaped.

Somit kann eine stabile und kompakte Moduseinstelleinrichtung bereitgestellt werden.Thus, a stable and compact mode setting device can be provided.

Das Übertragungselement weist bevorzugt Fixierglieder auf, über die das Übertragungselement drehfest am Kupplungsgehäuse fixiert ist.The transmission element preferably has fixing members, by means of which the transmission element is fixed in a rotationally fixed manner on the clutch housing.

Somit kann das Übertragungselement sicher und zuverlässig am Kupplungsgehäuse drehfest fixiert werden.The transmission element can thus be securely and reliably fixed in a rotationally fixed manner on the clutch housing.

Die Fixierglieder weisen bevorzugt radial auswärts gerichtete Erweiterungen auf, über die das Übertragungselement im Schlagbohr- und Bohrmodus am Kupplungsgehäuse axial fixiert ist.The fixing members preferably have radially outward extensions by means of which the transmission element is axially fixed to the clutch housing in percussion drilling and drilling mode.

Somit kann das Übertragungselement im Schlagbohr- und Bohrmodus auf einfache Art und Weise am Kupplungsgehäuse axial fixiert werden.The transmission element can thus be axially fixed to the clutch housing in a simple manner in the percussion drilling and drilling mode.

Gemäß der Erfindung ist das Einstellelement in axialer Richtung im Wesentlichen unbeweglich am Kupplungsgehäuse fixiert.According to the invention, the adjusting element is fixed substantially immovably on the clutch housing in the axial direction.

Die Erfindung ermöglicht somit die Bereitstellung einer Handwerkzeugmaschine mit kompaktem Aufbau und vergleichsweise reduzierter Baulänge.The invention thus makes it possible to provide a hand tool with a compact structure and a comparatively reduced overall length.

Das Einstellelement ist bevorzugt hülsenförmig ausgebildet.The adjusting element is preferably sleeve-shaped.

Somit kann ein einfaches und kostengünstiges Einstellelement bereitgestellt werden.A simple and inexpensive adjusting element can thus be provided.

Gemäß einer Ausführungsform weist das Einstellelement Festlegungselemente auf, die dazu ausgebildet sind, die axiale Verschiebbarkeit des Übertragungselements am Kupplungsgehäuse zu ermöglichen oder zu verhindern.According to one embodiment, the setting element has fixing elements which are designed to enable or prevent the axial displacement of the transmission element on the clutch housing.

Die Erfindung ermöglicht somit die Bereitstellung einer mit einer reduzierten Anzahl von Bauteilen realisierten Moduseinstelleinrichtung.The invention thus makes it possible to provide a mode setting device implemented with a reduced number of components.

Die Festlegungselemente weisen Halteelemente auf, die dazu ausgebildet sind, das Einstellelement am Kupplungsgehäuse axial zu fixieren.The fixing elements have holding elements which are designed to axially fix the adjusting element on the clutch housing.

Somit kann das Einstellelement auf einfache Art und Weise axial am Kupplungsgehäuse fixiert werden.The adjusting element can thus be fixed axially on the clutch housing in a simple manner.

Die Festlegungselemente weisen bevorzugt Blockierelemente auf, über die das Übertragungselement im Schlagbohr- und Bohrmodus in der zugeordneten Schlagbohr- oder Bohrposition am Kupplungsgehäuse axial fixiert ist, wobei die Blockierelemente das Übertragungselement im Schraubmodus in axialer Richtung freigeben.The fixing elements preferably have blocking elements, via which the transmission element in the percussion drilling and drilling mode is axially fixed in the assigned percussion drilling or drilling position on the coupling housing, the blocking elements releasing the transmission element in the screwing mode in the axial direction.

Somit kann die axiale Verschiebbarkeit des Übertragungselements am Kupplungsgehäuse sicher und zuverlässig ermöglicht oder unterbunden werden.The axial displaceability of the transmission element on the clutch housing can thus be reliably and reliably enabled or prevented.

Gemäß einer Ausführungsform sind am Kupplungsgehäuse Kraftübertragungsglieder zur axialen Kraftübertragung von dem Einstellelement auf das Kupplungsgehäuse in mindestens einem Betriebsmodus vorgesehen.According to one embodiment, force transmission members for axial force transmission from the adjusting element to the clutch housing are provided on the clutch housing in at least one operating mode.

Die Erfindung ermöglicht somit die Bereitstellung einer Moduseinstelleinrichtung, bei der auf einfache Art und Weise eine Wegbegrenzung bzw. Kraftaufnahme einer über die Abtriebswelle eingeleiteten Kraft durch das Einstellelement ermöglicht wird.The invention thus makes it possible to provide a mode setting device in which a path limitation or force absorption of a force introduced via the output shaft is made possible by the adjusting element in a simple manner.

Gemäß einer Ausführungsform ist der Abtriebswelle ein Rastenwerk zur Schlagerzeugung im Schlagbohrmodus zugeordnet und das Einstellelement weist Deaktivierungselemente zur Deaktivierung des Rastenwerks auf.According to one embodiment, the output shaft is assigned a catch mechanism for generating impact in the percussion drilling mode and the setting element has deactivation elements for deactivating the catch mechanism.

Die Erfindung ermöglicht somit die Bereitstellung eines einzelnen Einstellelements, mit dem sicher und zuverlässig sowohl eine Deaktivierung einer der Handwerkzeugmaschine zugeordneten Drehmomentenkupplung, als auch eine Deaktivierung eines der Handwerkzeugmaschine zugeordneten Rastenwerks durchführbar ist.The invention thus makes it possible to provide a single setting element with which both a deactivation of a torque clutch assigned to the hand-held power tool and a deactivation of a detent mechanism assigned to the hand-held power tool can be carried out safely and reliably.

Das Einstellelement ist über eine Bajonettverbindung mit dem Kupplungsgehäuse verbunden.The adjustment element is connected to the clutch housing via a bayonet connection.

Somit kann eine robuste und stabile Befestigung des Einstellelements am Kupplungsgehäuse ermöglicht werden.A robust and stable attachment of the adjusting element to the clutch housing can thus be made possible.

Das Betätigungselement ist bevorzugt nach Art einer durch manuelle Betätigung verdrehbaren Betätigungshülse ausgebildet.The actuating element is preferably designed in the manner of an actuating sleeve which can be rotated by manual actuation.

Somit kann ein einfaches und zuverlässiges Betätigungselement bereitgestellt werden.A simple and reliable actuating element can thus be provided.

Gemäß einer Ausführungsform sind das Einstellelement und das Betätigungselement einstückig ausgebildet.According to one embodiment, the setting element and the actuating element are formed in one piece.

Somit kann ein solides und kostengünstiges, kombiniertes Einstell- und Betätigungselement bereitgestellt werden.A solid and inexpensive, combined setting and actuating element can thus be provided.

Gemäß einer Ausführungsform ist mindestens ein Federelement vorgesehen, das dazu ausgebildet ist, das Übertragungselement mit einer vorgegebenen Federkraft axial in Richtung der Schlagbohr- und Bohrposition zu beaufschlagen.According to one embodiment, at least one spring element is provided which is designed to axially apply a predetermined spring force to the transmission element in the direction of the percussion drilling and drilling position.

Die vorgegebene Federkraft ist bevorzugt über eine zugeordnete Momenteneinstelleinrichtung innerhalb vorgegebener Grenzen einstellbar.The predefined spring force can preferably be set within predefined limits via an assigned torque setting device.

Die Erfindung ermöglicht somit die Bereitstellung einer sicheren und zuverlässigen Drehmomentenkupplung.The invention thus enables the provision of a safe and reliable torque clutch.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Die Erfindung ist anhand von in den Zeichnungen dargestellten Ausführungsbeispielen in der nachfolgenden Beschreibung näher erläutert. Es zeigen:

  • Fig. 1 eine perspektivische Ansicht eines Ausschnitts einer Handwerkzeugmaschine, mit einem Getriebe, einer Moduseinstelleinrichtung sowie einer Momenteneinstelleinrichtung gemäß der Erfindung,
  • Fig. 2 eine erste Schnittansicht des Ausschnitts der Handwerkzeugmaschine von Fig. 1,
  • Fig. 3 eine zweite Schnittansicht des Ausschnitts der Handwerkzeugmaschine von Fig. 1,
  • Fig. 4 eine vereinfachte perspektivische Ansicht sowie eine Schnittansicht des Ausschnitts der Handwerkzeugmaschine von Fig. 1 im Schraubmodus,
  • Fig. 5 eine vereinfachte perspektivische Ansicht sowie eine Schnittansicht des Ausschnitts der Handwerkzeugmaschine von Fig. 1 im Bohrmodus, und
  • Fig. 6 eine vereinfachte perspektivische Ansicht sowie eine Schnittansicht des Ausschnitts der Handwerkzeugmaschine von Fig. 1 im Schlagbohrmodus.
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 section of a hand tool, with a gear, a mode setting device and a torque setting device according to the invention,
  • Fig. 2 a first sectional view of the detail of the hand machine tool of Fig. 1 .
  • Fig. 3 a second sectional view of the detail of the hand machine tool of Fig. 1 .
  • Fig. 4 a simplified perspective view and a sectional view of the detail of the hand machine tool of Fig. 1 in screw mode,
  • Fig. 5 a simplified perspective view and a sectional view of the detail of the hand machine tool of Fig. 1 in drilling mode, and
  • Fig. 6 a simplified perspective view and a sectional view of the detail of the hand machine tool of Fig. 1 in percussion drilling mode.

Beschreibung der AusführungsbeispieleDescription of the embodiments

Fig. 1 zeigt eine Handwerkzeugmaschine 100 für einen Betrieb im Schlagbohr-, Bohr- und Schraubmodus gemäß der Erfindung. Zur Vereinfachung der Zeichnung ist die Handwerkzeugmaschine 100 nur abschnittsweise anhand von einem Getriebe 120, einer Moduseinstelleinrichtung 150 mit einem Einstellelement 110, einer Momenteneinstelleinrichtung 160 sowie einer Abtriebswelle 140 dargestellt. Fig. 1 shows a handheld power tool 100 for operation in percussion drilling, drilling and screwing mode according to the invention. To simplify the drawing, the handheld power tool 100 is only shown in sections with the aid of a gear 120, a mode setting device 150 with an adjusting element 110, a torque setting device 160 and an output shaft 140.

Gemäß einer Ausführungsform weist die Handwerkzeugmaschine 100 zum Antrieb des Getriebes 120 eine Antriebseinrichtung auf, z. B. einen elektrischen Antriebsmotor. Über das Getriebe 120 wird eine Drehbewegung des Antriebsmotors auf die illustrativ nach Art einer Werkzeugspindel ausgebildete Abtriebswelle 140 übertragen, an der z. B. ein Spannfutter zur Aufnahme eines Einsatzwerkzeugs befestigbar ist. Das Getriebe 120 ist beispielhaft in einem mit einem Kupplungsgehäuse 130 verbundenen Getriebegehäuse 122 angeordnet, das das Kupplungsgehäuse 130 zumindest abschnittsweise ausbilden kann.According to one embodiment, handheld power tool 100 has a drive device for driving gear 120, e.g. B. an electric drive motor. Via the gear 120, a rotary movement of the drive motor is transmitted to the output shaft 140, which is illustratively designed in the manner of a tool spindle. B. a chuck for receiving an insert tool can be attached. The transmission 120 is exemplified in one with a clutch housing 130 connected gear housing 122, which can form the clutch housing 130 at least in sections.

Das Kupplungsgehäuse 130 ist illustrativ hülsenförmig ausgebildet und hat an seinem Außenumfang einen Ringkragen 180, der ein zumindest abschnittsweise schulterförmig ausgebildetes Halteglied ausbildet. Der Ringkragen 180 ist mit Unterbrechungen 182, 184, 186 (Fig. 4 bis 6) versehen und hat Kraftübertragungsglieder 183, 185, 187, die beispielhaft nach Art von axial ausgerichteten Erweiterungen am Ringkragen 180 ausgebildet sind und zur axialen Kraftübertragung von dem Einstellelement 110 auf das Kupplungsgehäuse 130 in mindestens einem Betriebsmodus dienen. Gemäß einer Ausführungsform bildet der Ringkragen 180 an seiner vom Getriebegehäuse 122 abgewandten Seite für ein Übertragungselement 170 eine ringförmige Abstützfläche 189, die im Bereich der Kraftübertragungsglieder 183, 185, 187 nutartig ausgebildet ist. Darüber hinaus sind am Kupplungsgehäuse 130 beispielhaft axial ausgerichtete Nuten 481, 486 sowie 482-485 (Fig. 4 bis 6) vorgesehen.The clutch housing 130 is illustratively designed in the form of a sleeve and has an annular collar 180 on its outer circumference, which forms an at least partially shoulder-shaped holding member. The ring collar 180 is interrupted 182, 184, 186 ( 4 to 6 ) and has power transmission members 183, 185, 187, which are designed, for example, in the manner of axially aligned extensions on the ring collar 180 and are used for the axial power transmission from the adjusting element 110 to the clutch housing 130 in at least one operating mode. According to one embodiment, the ring collar 180 forms an annular support surface 189 on its side facing away from the transmission housing 122 for a transmission element 170, which is formed in the area of the force transmission members 183, 185, 187 in a groove-like manner. In addition, axially aligned grooves 481, 486 and 482-485 (e.g. 4 to 6 ) intended.

Das Übertragungselement 170 ist gemäß einer Ausführungsform scheibenförmig nach Art eines Druckblechs bzw. eines Druckrings ausgebildet und wird deshalb nachfolgend auch derart bezeichnet. Der Druckring 170 hat illustrativ Fixierglieder 177, 172, 173, 174 sowie 175-176 (Fig. 4 und 5) und 471, 476 sowie 472-475, über die der Druckring 170 drehfest am Kupplungsgehäuse 130 fixiert ist. Diese weisen beispielhaft radial auswärts gerichtete Vorsprünge 177, 172, 173, 174 sowie 175-176 (Fig. 4 und 5) und radial einwärts gerichtete, wulstartig ausgebildete Erweiterungen 471, 476 sowie 472-475 (Fig. 4 bis 6) auf. Die radial einwärts gerichteten Erweiterungen 471, 476 sowie 472-475 (Fig. 4 bis 6) sind in den axial ausgerichteten Nuten 481, 486 sowie 482-485 (Fig. 4 bis 6) des Kupplungsgehäuses 130 angeordnet. Die radial auswärts gerichteten Vorsprünge 177, 172, 173, 174 sowie 175-176 (Fig. 4 und 5) umfassen jeweils paarweise ein zugeordnetes Kraftübertragungsglied 183, 185, 187 des Kupplungsgehäuses 130. Z. B. umfassen die Vorsprünge 172, 173 das Kraftübertragungsglied 183. Darüber hinaus sind die radial auswärts gerichteten Vorsprünge 177, 172, 173, 174 sowie 175-176 (Fig. 4 und 5) dazu ausgebildet, im Schlagbohr- und Bohrmodus eine axiale Fixierung des Druckrings 170 am Kupplungsgehäuse 130 zu ermöglichen, wie unten stehend beschrieben. Im Schraubmodus kann der Druckring 170 eine axiale Stellbewegung gegenüber dem Kupplungsgehäuse 130 sowie dem Einstellelement 110 ausführen, wie unten bei Fig. 4 bis 6 beschrieben.According to one embodiment, the transmission element 170 is disc-shaped in the manner of a pressure plate or a pressure ring and is therefore also referred to below in this way. The pressure ring 170 illustratively has fixing members 177, 172, 173, 174 and 175-176 ( Fig. 4 and 5 ) and 471, 476 and 472-475, by means of which the pressure ring 170 is fixed to the clutch housing 130 in a rotationally fixed manner. These have, for example, projections 177, 172, 173, 174 and 175-176 (directed radially outwards) ( Fig. 4 and 5 ) and radially inward, bead-like extensions 471, 476 and 472-475 ( 4 to 6 ) on. The radially inward extensions 471, 476 and 472-475 ( 4 to 6 ) are in the axially aligned grooves 481, 486 and 482-485 ( 4 to 6 ) of the clutch housing 130 is arranged. The radially outward projections 177, 172, 173, 174 and 175-176 ( Fig. 4 and 5 ) each include an associated force transmission member 183, 185, 187 of the clutch housing 130. For example, the projections 172, 173 comprise the force transmission member 183. In addition, the radially outward projections 177, 172, 173, 174 and 175-176 ( Fig. 4 and 5 ) designed to enable the pressure ring 170 to be axially fixed to the clutch housing 130 in the percussion drilling and drilling mode, as described below. In screw mode, the pressure ring 170 perform an axial actuating movement with respect to the clutch housing 130 and the adjusting element 110, as below 4 to 6 described.

Die Moduseinstelleinrichtung 150 hat beispielhaft ein illustrativ hülsenförmig ausgebildetes und deshalb nachfolgend auch als Betätigungshülse bzw. Moduseinstellhülse bezeichnetes Betätigungselement 155 sowie das drehfest mit diesem verbundene Einstellelement 110, das illustrativ ebenfalls hülsenförmig ausgebildet ist und nachfolgend auch als Schalthülse bezeichnet wird. Eine beispielhafte Befestigung der Betätigungshülse 155 an der Schalthülse 110 über an der Schalthülse 110 vorgesehene, radiale Erweiterungen (491, 493, 495 in Fig. 4 bis 6) ist bei Fig. 4 bis 6 beschrieben. Die Betätigungshülse 155 ist über die Schalthülse 110 um die Längsachse der Abtriebswelle 140 drehbar am Kupplungsgehäuse 130 gelagert. Durch eine entsprechende Verdrehung der Betätigungshülse 155 und somit der Schalthülse 110 können die Betriebsmodi Schlagbohren, Bohren und Schrauben eingestellt werden.The mode setting device 150 has, for example, an illustrative sleeve-shaped actuating element 155, which is therefore also referred to below as the actuating sleeve or mode-adjusting sleeve, and the adjusting element 110 which is non-rotatably connected to this, which is illustratively also sleeve-shaped and is also referred to below as the switching sleeve. An exemplary attachment of the actuating sleeve 155 to the switching sleeve 110 via radial extensions (491, 493, 495 in.) Provided on the switching sleeve 110 4 to 6 ) is at 4 to 6 described. The actuating sleeve 155 is rotatably mounted on the clutch housing 130 via the switching sleeve 110 about the longitudinal axis of the output shaft 140. The operating modes impact drilling, drilling and screwing can be set by a corresponding rotation of the actuating sleeve 155 and thus of the switching sleeve 110.

Die Schalthülse 110 ist in axialer Richtung der Abtriebswelle 140 im Wesentlichen unbeweglich am Kupplungsgehäuse 130 fixiert. Allerdings kann aus Toleranzgründen ein axiales Bewegungsspiel zur Anlage an die Betätigungshülse 155 vorteilhaft sein. Gemäß einer Ausführungsform hat die Schalthülse 110 Festlegungselemente 111, 112, 113 (Fig. 4 und 6), 114, 115, 116, die dazu ausgebildet sind, die axiale Verschiebbarkeit des Druckrings 170 am Kupplungsgehäuse 130 zu ermöglichen oder zu verhindern. Illustrativ weisen diese Festlegungselemente 111, 112, 113 (Fig. 4 und 6), 114, 115, 116 radial einwärts gerichtete, stegartige Halteelemente 112, 114, 116 auf, die nachfolgend auch als Haltestege bezeichnet werden, sowie stegartig ausgeführte Blockierelemente 111, 115 und 113 (Fig. 4 bis 6), die nachfolgend auch als Blockierstege bezeichnet werden. Illustrativ sind die Blockierstege 111, 115 und 113 (Fig. 4 bis 6) mit axialer Ausrichtung an einem am Innenumfang der Schalthülse 110 vorgesehenen, radial einwärts gerichteten Umfangskragen 105 ausgebildet. Alternativ hierzu können die Blockierstege 111, 115 und 113 (Fig. 4 bis 6) als radial einwärts gerichtete, am Innenumfang der Schalthülse 110 ausgebildete Vorsprünge ausgeführt sein. Über die Blockierstege 111, 115 und 113 (Fig. 4 bis 6) wird der Druckring 170 im Schlagbohr- und Bohrmodus in einer zugeordneten Schlagbohr- oder Bohrposition am Kupplungsgehäuse 130 axial fixiert, wie bei Fig. 5 und 6 beschrieben. Im Schraubmodus geben die Blockierstege 111, 115 und 113 (Fig. 4 bis 6) den Druckring 170 in axialer Richtung frei, wie bei Fig. 4 beschrieben. Darüber hinaus hat die Schalthülse 110 illustrativ stegartig ausgebildete Deaktivierungselemente 117, 118, 119, die an einer Stirnseite der Schalthülse 110 ausgebildet sind und eine Verstellkontur ausbilden, wie unten bei Fig. 2 beschrieben.The switching sleeve 110 is fixed substantially immovably on the clutch housing 130 in the axial direction of the output shaft 140. However, for reasons of tolerance, an axial play for movement against the actuating sleeve 155 can be advantageous. According to one embodiment, the switching sleeve 110 has fixing elements 111, 112, 113 ( Fig. 4 and 6 ), 114, 115, 116, which are designed to enable or prevent the axial displacement of the pressure ring 170 on the clutch housing 130. Illustratively, these fixing elements 111, 112, 113 ( Fig. 4 and 6 ), 114, 115, 116 radially inwardly directed, web-like holding elements 112, 114, 116, which are also referred to below as holding webs, and web-like blocking elements 111, 115 and 113 ( 4 to 6 ), which are also referred to below as blocking webs. The blocking webs 111, 115 and 113 ( 4 to 6 ) with axial alignment on a radially inwardly directed circumferential collar 105 provided on the inner circumference of the switching sleeve 110. Alternatively, the blocking webs 111, 115 and 113 ( 4 to 6 ) are designed as radially inward projections formed on the inner circumference of the switching sleeve 110. Via the blocking webs 111, 115 and 113 ( 4 to 6 ), the pressure ring 170 is axially fixed in the hammer drilling and drilling mode in an assigned hammer drilling or drilling position on the clutch housing 130, as in Fig. 5 and 6 described. In screwing mode, the blocking bars 111, 115 and 113 ( 4 to 6 ) the Pressure ring 170 free in the axial direction, as in Fig. 4 described. In addition, the switching sleeve 110 has illustratively web-like deactivation elements 117, 118, 119, which are formed on one end face of the switching sleeve 110 and form an adjustment contour, as in the case below Fig. 2 described.

Bei einer Montage der Schalthülse 110 am Kupplungsgehäuse 130 wird die Schalthülse 110 derart auf das Kupplungsgehäuse 130 aufgeschoben, dass die Haltestege 112, 114, 116 zunächst am Außenumfang des Druckrings 170 entlang durch die Unterbrechungen 182, 184 und 186 (Fig. 4) durchgreifen. Dann wird die Schalthülse 110 z. B. im Uhrzeigersinn verdreht, sodass die Haltestege 112, 114, 116 hinter den Ringkragen 180 greifen und somit in Verbindung mit den Blockierstegen 111, 115 und 113 (Fig. 4 bis 6) die Schalthülse 110 nach Art einer Bajonettverbindung am Ringkragen 180 axial fixieren. Darüber hinaus wird zwischen Schalthülse 110 und Kupplungsgehäuse 130 ein Rastelement angeordnet, das ein Verrasten der Schalthülse 110 in zugeordneten Drehstellungen am Kupplungsgehäuse 130 ermöglicht, wobei diese Drehstellungen den unterschiedlichen Betriebsmodi der Handwerkzeugmaschine 100 zugeordnet sind. Es wird jedoch darauf hingewiesen, dass geeignete Rastelemente dem Fachmann hinreichend bekannt sind, z. B. Rastfedern, sodass hier zwecks Knappheit der Beschreibung auf eine eingehende Beschreibung eines spezifischen Rastelements verzichtet wird.When the switching sleeve 110 is mounted on the clutch housing 130, the switching sleeve 110 is pushed onto the clutch housing 130 in such a way that the holding webs 112, 114, 116 initially along the outer circumference of the pressure ring 170 through the interruptions 182, 184 and 186 ( Fig. 4 ) reach through. Then the switching sleeve 110 z. B. rotated clockwise so that the retaining webs 112, 114, 116 engage behind the ring collar 180 and thus in connection with the blocking webs 111, 115 and 113 ( 4 to 6 ) axially fix the switching sleeve 110 to the ring collar 180 in the manner of a bayonet connection. In addition, a latching element is arranged between the switching sleeve 110 and the clutch housing 130, which enables the switching sleeve 110 to be locked in the assigned rotational positions on the clutch housing 130, these rotational positions being assigned to the different operating modes of the handheld power tool 100. However, it is pointed out that suitable latching elements are sufficiently known to the person skilled in the art, e.g. B. detent springs, so that for the sake of conciseness of the description, a detailed description of a specific detent element is dispensed with.

Die Momenteneinstelleinrichtung 160 hat illustrativ eine Momenteneinstellhülse 165, die in axialer Richtung der Abtriebswelle 140 der Betätigungs- bzw. Moduseinstellhülse 155 nachgelagert ist und unabhängig von dieser betätigbar bzw. um die Längsachse der Abtriebswelle 140 verdrehbar ist. Über die Momenteneinstellhülse 165 kann das im Schraubmodus maximal übertragbare Drehmoment der Handwerkzeugmaschine 100 eingestellt werden.The torque setting device 160 illustratively has a torque setting sleeve 165 which is arranged downstream of the actuation or mode setting sleeve 155 in the axial direction of the output shaft 140 and can be actuated independently thereof or rotated about the longitudinal axis of the output shaft 140. The maximum torque that can be transmitted by the handheld power tool 100 in the screwing mode can be set via the torque setting sleeve 165.

Fig. 2 zeigt eine Schnittansicht des Ausschnitts der Handwerkzeugmaschine 100 von Fig. 1 mit dem Getriebe 120, der Moduseinstelleinrichtung 150, der Momenteneinstelleinrichtung 160 und der Abtriebswelle 140, bei der der Schnitt etwa senkrecht zur Blattebene ausgeführt ist. Das Getriebe 120 ist beispielhaft als Planetengetriebe mit drei Planetenstufen ausgebildet. Da der prinzipielle Aufbau und die Funktionsweise von Planetengetrieben dem Fachmann hinreichend bekannt sind, wird hier zwecks Einfachheit der Beschreibung auf eine eingehende Beschreibung verzichtet. Fig. 2 shows a sectional view of the detail of the hand machine tool 100 of FIG Fig. 1 with the gear 120, the mode setting device 150, the torque setting device 160 and the output shaft 140, in which the cut is made approximately perpendicular to the sheet plane. The transmission 120 is designed, for example, as a planetary transmission with three planetary stages. Since the basic structure and mode of operation of planetary gears are well known to the person skilled in the art are, for the sake of simplicity of description, a detailed description is omitted here.

Gemäß einer Ausführungsform ist die Momenteneinstellhülse 165 der Momenteneinstelleinrichtung 160 axial an dem Kupplungsgehäuse 130 lagefixiert und greift mit ihrem Innengewinde in das Außengewinde eines Federhalterings 213, der drehfest aber axial beweglich auf dem Kupplungsgehäuse 130 sitzt. Dies erfolgt beispielhaft mithilfe von Schrauben 221 und 422, 423 (Fig. 4 bis 6), die ein Halteblech 222 mit dem Kupplungsgehäuse 130 verbinden. Das Blech 222 umgreift die Abtriebswelle 140 und beaufschlagt einen Rastfederhalter 219 gegen eine Ringschulter in der Momenteneinstellhülse 165, sodass auf diese Art und Weise auch die Momenteneinstellhülse 165 am Kupplungsgehäuse 130 axial gesichert wird. Damit die Momenteneinstellhülse 165 bei einer Verdrehung zur Einstellung eines maximal übertragbaren Drehmoments in diskreten Rastpositionen verrastet, ist diese von einem Rastfederelement 220 kraftbeaufschlagt, das an dem Rastfederhalter 219 gehalten ist, wobei der Rastfederhalter 219 und das Rastfederelement 220 in dem von der Momenteneinstellhülse 165 umgriffenen Innenraum angeordnet sind. Das Rastfederelement 220 rastet in diskreten Winkelpositionen ein, indem z. B. eine Rastkontur an der Innenseite der Momenteneinstellhülse 165 von dem Rastfederelement 220 beaufschlagt wird.According to one embodiment, the torque adjusting sleeve 165 of the torque adjusting device 160 is axially fixed in position on the clutch housing 130 and, with its internal thread, engages in the external thread of a spring retaining ring 213, which sits on the clutch housing 130 in a rotationally fixed but axially movable manner. This is done using screws 221 and 422, 423 ( 4 to 6 ), which connect a holding plate 222 to the clutch housing 130. The sheet metal 222 encompasses the output shaft 140 and acts on a detent spring holder 219 against an annular shoulder in the torque adjustment sleeve 165, so that the torque adjustment sleeve 165 is also axially secured to the clutch housing 130 in this way. So that the torque adjusting sleeve 165 is locked in discrete locking positions when it is twisted to set a maximum transmissible torque, this is acted upon by a locking spring element 220 which is held on the locking spring holder 219, the locking spring holder 219 and the locking spring element 220 in the interior space encompassed by the torque adjusting sleeve 165 are arranged. The detent spring element 220 engages in discrete angular positions by z. B. a locking contour on the inside of the torque adjusting sleeve 165 is acted upon by the locking spring element 220.

Die Abtriebswelle 140 ist illustrativ über zwei axial beabstandete Kugellager 214, 215 drehbar gegenüber dem Kupplungsgehäuse 130 und dem Getriebegehäuse 122 gelagert. Zusätzlich zur Drehbewegung kann die Abtriebswelle 140 auch eine axiale Stellbewegung gegenüber dem Kupplungsgehäuse 130 ausführen. Hierzu ist das zweite Kugellager 215 axial fest mit der Abtriebswelle 140 verbunden und innerhalb eines gehäusefesten Rasttopfs 216 verschiebbar gelagert. Das erste Kugellager 214 ist gehäusefest im Kupplungsgehäuse 130 angeordnet. Durch die axiale Stellbewegung wird die Abtriebswelle 140 zwischen der Schlagbohrposition und der Bohr- bzw. Schraubposition verstellt. In der Schlagbohrposition kann die Abtriebswelle 140 - in Fig. 2 - nach links verschoben werden, also in das Kupplungsgehäuse 130 hinein. Hierbei gelangt der Rasttopf 216 in Rasteingriff mit einer Rastscheibe 217, welche drehfest auf der Mantelfläche der Abtriebswelle 140 aufsitzt und mit dem Rasttopf 216 ein Rastenwerk ausbildet. Die Rastscheibe 217 hat zudem die Aufgabe, das Kugellager 215, welches ebenfalls auf der Mantelfläche der Abtriebswelle 140 aufsitzt, axial auf dieser zu fixieren.The output shaft 140 is illustratively rotatably supported relative to the clutch housing 130 and the gear housing 122 via two axially spaced ball bearings 214, 215. In addition to the rotary movement, the output shaft 140 can also perform an axial actuating movement with respect to the clutch housing 130. For this purpose, the second ball bearing 215 is axially fixedly connected to the output shaft 140 and is slidably mounted within a locking pot 216 fixed to the housing. The first ball bearing 214 is arranged fixed to the housing in the clutch housing 130. The output shaft 140 is adjusted between the percussion drilling position and the drilling or screwing position by the axial adjusting movement. In the percussion drilling position, the output shaft 140 - in Fig. 2 - are shifted to the left, ie into the clutch housing 130. Here, the detent 216 comes into detent engagement with a detent disc 217, which is seated in a rotationally fixed manner on the outer surface of the output shaft 140 and forms a detent mechanism with the detent 216. The locking disk 217 also has the task of axially fixing the ball bearing 215, which is also seated on the outer surface of the output shaft 140.

Innerhalb des Rasttopfes 216 ist ein Federelement 218 angeordnet, das die Abtriebswelle 140 über ein Verriegelungsteil 223 und das Kugellager 215 in eine zugeordnete Außer-Rastposition kraftbeaufschlagt, in der der Rasttopf 216 und die Rastscheibe 217 nicht in Eingriff stehen.A spring element 218 is arranged within the locking pot 216, which forces the output shaft 140 via a locking part 223 and the ball bearing 215 into an assigned, non-locking position, in which the locking pot 216 and the locking disc 217 are not in engagement.

Das Verriegelungsteil 223 liegt mit einem axialen Ende auf der Schalthülse 110 auf und mit seinem anderen axialen Ende auf einem dem Kugellager 215 zugeordneten Außenring. Die Schalthülse 110 umgreift den illustrativ im Inneren der Schalthülse 110 angeordneten Druckring 170, der unmittelbar auf der an dem Kupplungsgehäuse 130 ausgebildeten Abstützfläche 189 abgestützt ist, zumindest abschnittsweise. Das Verriegelungsteil 223 dient zur Abtastung der an der Stirnseite der Schalthülse 110 von den Deaktivierungsstegen 118 und 117, 119 (Fig. 1) ausgebildeten Verstellkontur und zu deren Übertragung auf das Kugellager 215 und somit die Rastscheibe 217. Hierbei werden durch die Deaktivierungsstege 118 und 117, 119 (Fig. 1) vorgegebene axiale Höhenänderungen in der Verstellkontur an der Schalthülse 110 durch den Kontakt mit dem Verriegelungsteil 223 auf die Rastscheibe 217 übertragen, so dass die Rastscheibe 217 eine entsprechende axiale Lageänderung erfährt. Auf diese Weise kann der Rasteingriff zwischen der Rastscheibe 217 und dem Rasttopf 216 gesteuert werden. Illustrativ liegt das Verriegelungsteil 223 auf den Deaktivierungsstegen 118 und 117, 119 (Fig. 1) auf, sodass die Rastscheibe 217 axial vom Boden des Rasttopfs 216 beabstandet ist und somit das Rastenwerk der Handwerkzeugmaschine 100 deaktiviert ist. Diese Deaktivierung wird im Schraubmodus (Fig. 4) und im Bohrmodus (Fig. 5) realisiert. Im Schlagbohrmodus (Fig. 6) liegt das Verriegelungsteil 223 nicht auf den Deaktivierungsstegen 118 und 117, 119 (Fig. 1) auf, sodass Rastscheibe 217 und Rasttopf 216 wie oben beschrieben in Rasteingriff gehen können.The locking part 223 rests with one axial end on the switching sleeve 110 and with its other axial end on an outer ring assigned to the ball bearing 215. The shift sleeve 110 surrounds the pressure ring 170, which is illustratively arranged in the interior of the shift sleeve 110 and which is supported directly on the support surface 189 formed on the clutch housing 130, at least in sections. The locking part 223 serves to scan the deactivation webs 118 and 117, 119 (on the front side of the switching sleeve 110 Fig. 1 ) trained adjustment contour and for their transmission to the ball bearing 215 and thus the locking disc 217. Here, the deactivation webs 118 and 117, 119 ( Fig. 1 ) transmit predetermined axial height changes in the adjustment contour on the switching sleeve 110 through contact with the locking part 223 to the locking disk 217, so that the locking disk 217 experiences a corresponding axial change in position. In this way, the locking engagement between the locking disc 217 and the locking pot 216 can be controlled. Illustratively, the locking part 223 lies on the deactivation bars 118 and 117, 119 ( Fig. 1 ), so that the locking disc 217 is axially spaced from the bottom of the locking pot 216 and thus the locking mechanism of the hand tool 100 is deactivated. This deactivation is carried out in screw mode ( Fig. 4 ) and in drilling mode ( Fig. 5 ) realized. In percussion drilling mode ( Fig. 6 ) the locking part 223 is not on the deactivation bars 118 and 117, 119 ( Fig. 1 ) on, so that locking disc 217 and locking cup 216 can engage in locking engagement as described above.

Fig. 3 zeigt eine Schnittansicht des Ausschnitts der Handwerkzeugmaschine 100 von Fig. 1 mit dem Getriebe 120, der Moduseinstelleinrichtung 150, der Momenteneinstelleinrichtung 160 und der Abtriebswelle 140, bei der der Schnitt etwa in der Blattebene der Fig. 1 ausgeführt ist. Fig. 3 verdeutlicht eine beispielhafte Ausgestaltung der wie bei Fig. 1 beschrieben über eine Bajonettverbindung mit dem Kupplungsgehäuse 130 verbundenen Schalthülse 110, wobei illustrativ der radial einwärts gerichtete Haltesteg 112 in eine Ringnut 399 eingreift, die im Bereich des Ringkragens 180 des Kupplungsgehäuses 130 vorgesehen ist. Darüber hinaus ist in Fig. 3 der radial auswärts gerichtete Vorsprung 172 sowie ein weiterer radial auswärts gerichteter Vorsprung 175 des Druckrings 170 gezeigt. Fig. 3 shows a sectional view of the detail of the hand machine tool 100 of FIG Fig. 1 with the gear 120, the mode setting device 150, the torque setting device 160 and the output shaft 140, in which the cut approximately in the plane of the sheet Fig. 1 is executed. Fig. 3 illustrates an exemplary design of the as in Fig. 1 Described via a bayonet connection with the switching sleeve 110 connected to the clutch housing 130, the holding web 112 directed radially inwards illustratively engaging in an annular groove 399 which is provided in the region of the annular collar 180 of the clutch housing 130. About that out is in Fig. 3 the radially outward projection 172 and a further radially outward projection 175 of the pressure ring 170 are shown.

Gemäß einer Ausführungsform hat die Handwerkzeugmaschine 100 eine von dem Federhaltering 213 und einer Mehrzahl von Federelementen 311, 314 und 312, 313, 315, 316 (Fig. 4 bis 6) ausgebildete Federeinrichtung, die dazu ausgebildet ist, im Schraubmodus der Handwerkzeugmaschine 100 ein maximal übertragbares Drehmoment festzulegen. Die Federelemente 311, 314 und 312, 313, 315, 316 (Fig. 4 bis 6) sind über den Umfang verteilt am Kupplungsgehäuse 130 angeordnet und beispielhaft als Schraubendruckfedern ausgeführt. Illustrativ erstrecken sich die Federelemente 311, 314 und 312, 313, 315, 316 (Fig. 4 bis 6) zwischen dem Federhaltering 213 und dem Druckring 170. Am Federhaltering 213 sind illustrativ sechs Zapfen angeordnet, auf die die Federelemente 311, 314 und 312, 313, 315, 316 (Fig. 4 bis 6) aufsteckbar sind. In Fig. 3 sind nur zwei mit den Bezugszeichen 321, 324 gekennzeichnete Zapfen sichtbar, auf die illustrativ die Federelemente 311 bzw. 314 aufgesteckt sind.According to one embodiment, the handheld power tool 100 has one of the spring retaining ring 213 and a plurality of spring elements 311, 314 and 312, 313, 315, 316 ( 4 to 6 ) trained spring device, which is designed to set a maximum transferable torque in the screwing mode of the hand power tool 100. The spring elements 311, 314 and 312, 313, 315, 316 ( 4 to 6 ) are arranged on the clutch housing 130 distributed over the circumference and are designed, for example, as helical compression springs. Illustratively, the spring elements 311, 314 and 312, 313, 315, 316 ( 4 to 6 ) between the spring retaining ring 213 and the pressure ring 170. Six pins are illustratively arranged on the spring retaining ring 213, onto which the spring elements 311, 314 and 312, 313, 315, 316 ( 4 to 6 ) are attachable. In Fig. 3 only two pins identified by reference numerals 321, 324 are visible, on which the spring elements 311 and 314 are illustratively attached.

Der Federhaltering 213 ist beispielhaft relativ zur Abtriebswelle 140 axial verschiebbar und bewegt sich bei einer Drehbewegung der Momenteneinstellhülse 165 aufgrund der Verschraubung mit der Momenteneinstellhülse 165 axial relativ zur Abtriebswelle 140, wodurch sich die Vorspannung der Federelemente 311, 314 und 312, 313, 315, 316 (Fig. 4 bis 6) ändert, die den Druckring 170 mit einer der Vorspannung entsprechenden axialen Kraft gegen das Kupplungsgehäuse 130 beaufschlagen. Mit zunehmender Vorspannung der Federelemente 311, 314 und 312, 313, 315, 316 (Fig. 4 bis 6) wächst somit auch die axiale Kraft, welche von diesen auf den Druckring 170 ausgeübt wird.The spring retaining ring 213 is, for example, axially displaceable relative to the output shaft 140 and, when the torque setting sleeve 165 rotates, moves axially relative to the output shaft 140 due to the screw connection with the torque setting sleeve 165, as a result of which the prestressing of the spring elements 311, 314 and 312, 313, 315, 316 ( 4 to 6 ) changes which act on the pressure ring 170 with an axial force corresponding to the preload against the clutch housing 130. With increasing preload of the spring elements 311, 314 and 312, 313, 315, 316 ( 4 to 6 ) the axial force which is exerted on the pressure ring 170 thereby also increases.

Gemäß einer Ausführungsform bilden der Federhaltering 213, die Federelemente 311, 314 und 312, 313, 315, 316 (Fig. 4 bis 6) und der Druckring 170 mit einer Mehrzahl von Kugeln 389 und einer dem Planetengetriebe 120 zugeordneten Rastscheibe 391, die illustrativ ein Hohlrad einer Planetenstufe des Planetengetriebes 120 realisiert, eine Drehmomentenkupplung aus. Die Kugeln 389 sind illustrativ in zugeordneten Öffnungen 387 am Kupplungsgehäuse 130 gelagert und sind in axialer Richtung der Abtriebswelle 140 zwischen einer Stirnseite der Rastscheibe 391, an der eine Kopplungsstruktur 392 ausgebildet ist, und dem Druckring 170 angeordnet. Eine geeignete Kopplungsstruktur kann beispielsweise eine Mehrzahl von axialen Erhebungen aufweisen und ist dem Fachmann hinreichend bekannt, sodass hier zwecks Knappheit der Beschreibung auf eine eingehende Beschreibung der Kopplungsstruktur 392 verzichtet wird. Darüber hinaus ist dem Fachmann auch die Funktionsweise einer geeigneten Drehmomentenkupplung hinreichend bekannt, sodass hier zwecks Knappheit der Beschreibung ebenfalls auf eine eingehende Beschreibung verzichtet wird.According to one embodiment, the spring retaining ring 213, the spring elements 311, 314 and 312, 313, 315, 316 ( 4 to 6 ) and the pressure ring 170 with a plurality of balls 389 and a locking disk 391 assigned to the planetary gear 120, which illustratively realizes a ring gear of a planetary stage of the planetary gear 120, a torque clutch. The balls 389 are illustratively mounted in assigned openings 387 on the clutch housing 130 and are arranged in the axial direction of the output shaft 140 between an end face of the locking disk 391, on which a coupling structure 392 is formed, and the pressure ring 170. A suitable coupling structure can, for example have a plurality of axial elevations and is sufficiently known to the person skilled in the art, so that for the sake of conciseness of the description there is no detailed description of the coupling structure 392. In addition, the mode of operation of a suitable torque clutch is sufficiently known to the person skilled in the art, so that an in-depth description is also omitted here for the sake of conciseness of the description.

Fig. 4 zeigt eine perspektivische Draufsicht auf die im Kupplungsgehäuse 130 von Fig. 1 bis 3 drehbar gelagerte Abtriebswelle 140 von Fig. 1 bis 3 mit der Moduseinstelleinrichtung 150 von Fig. 1 bis 3 zur Verdeutlichung einer Einstellung der Moduseinstelleinrichtung 150 für einen Betrieb der Handwerkzeugmaschine 100 von Fig. 1 bis 3 im Schraubmodus. In diesem Schraubmodus sind die Betätigungshülse 155 und mit dieser die Schalthülse 110 in eine vorgegebene Schraubstellung verdreht. Zur Vereinfachung der Darstellung wurde in Fig. 4 auf eine Abbildung der Momenteneinstelleinrichtung 160 von Fig. 1 bis 3 verzichtet. Fig. 4 shows a top perspective view of the clutch housing 130 of FIG 1 to 3 rotatably mounted output shaft 140 from 1 to 3 with the mode setting device 150 of 1 to 3 to illustrate a setting of the mode setting device 150 for an operation of the hand machine tool 100 of 1 to 3 in screw mode. In this screwing mode, the actuating sleeve 155 and with this the switching sleeve 110 are rotated into a predetermined screwing position. To simplify the presentation, in Fig. 4 on an image of the torque setting device 160 from 1 to 3 waived.

Darüber hinaus ist in Fig. 4 eine Schnittansicht von Kupplungsgehäuse 130, Schalthülse 110 und Druckring 170 von Fig. 1 bis 3 gezeigt, geschnitten im Bereich der Blockierstege 111, 113, 115 der Schalthülse 110, um eine Zusammenwirkung dieser Bauteile im Schraubmodus zu illustrieren. Das Kupplungsgehäuse 130 hat illustrativ eine etwa zentrale Öffnung 499 zur Durchführung der Abtriebswelle 140.In addition, in Fig. 4 a sectional view of clutch housing 130, shift sleeve 110 and pressure ring 170 of 1 to 3 shown, cut in the area of the blocking webs 111, 113, 115 of the switching sleeve 110 in order to illustrate the interaction of these components in the screwing mode. The clutch housing 130 illustratively has an approximately central opening 499 for the passage of the output shaft 140.

Fig. 4 verdeutlicht das im Schraubmodus, wie bei Fig. 2 beschrieben, auf den Deaktivierungsstegen 117, 118, 119 der Schalthülse 110 aufliegende Verriegelungsteil 223 sowie die beispielhaft am Kupplungsgehäuse 130 verschraubten Schrauben 221, 422, 423. Darüber hinaus verdeutlicht Fig. 4 eine beispielhafte drehfeste Verbindung der Schalthülse 110 an der Betätigungshülse 155 über am Außenumfang der Schalthülse 110 vorgesehene radiale Erweiterungen 491, 493, 495, die illustrativ in zugeordneten, am Innenumfang der Betätigungshülse 155 vorgesehene Aussparungen 401, 403, 405 eingreifen. Es wird jedoch darauf hingewiesen, dass auch andere drehfeste Verbindungen zwischen Schalthülse 110 und Betätigungshülse 155 realisierbar sind. Z. B. können am Innenumfang der Betätigungshülse 155 ein oder mehrere radial einwärts gerichtete Vorsprünge ausgebildet sein, die in zugeordnete radiale Aussparungen oder Öffnungen der Schalthülse 110 eingreifen. Fig. 4 illustrates this in screw mode, as with Fig. 2 described, on the deactivation webs 117, 118, 119 of the switching sleeve 110 resting locking part 223 and the screws 221, 422, 423 screwed to the clutch housing 130 as an example. Furthermore, clarified Fig. 4 an exemplary rotationally fixed connection of the switching sleeve 110 to the actuating sleeve 155 via radial extensions 491, 493, 495 provided on the outer circumference of the switching sleeve 110, which illustratively engage in associated cutouts 401, 403, 405 provided on the inner circumference of the actuating sleeve 155. However, it is pointed out that other rotationally fixed connections between the switching sleeve 110 and the actuating sleeve 155 can also be realized. For example, one or more projections directed radially inward can be formed on the inner circumference of the actuating sleeve 155, which engage in assigned radial recesses or openings in the switching sleeve 110.

Gemäß einer Ausführungsform sind im Schraubmodus die Haltestege 112, 114, 116 der Schalthülse 110 in der in Fig. 4 vorgegebenen Blickrichtung zumindest abschnittsweise hinter dem Ringkragen 180 von Fig. 1 angeordnet und ihre Blockierstege 111, 113, 115 sind jeweils zwischen zugeordneten radial auswärts gerichteten Vorsprüngen 174, 175 bzw. 176, 177 bzw. 172, 173 angeordnet. Somit liegen die Blockierstege 111, 113, 115 gegen die Kraftübertragungsglieder 185, 187 bzw. 183 des Kupplungsgehäuses 130 an und geben den Druckring 170 in axialer Richtung frei. Dieser kann somit von den Kugeln 389 von Fig. 3 gegen die Kraft der Federelemente 311, 312, 313, 314, 315, 316 relativ zum Kupplungsgehäuse 130 axial verschoben werden, wobei seine radial einwärts gerichteten Erweiterungen 471, 472, 473, 474, 475, 476 in den axial ausgerichteten Nuten 481, 482, 483, 484, 485 bzw. 486 des Kupplungsgehäuses 130 gleiten.According to one embodiment, the holding webs 112, 114, 116 of the switching sleeve 110 are in the screw mode in the in Fig. 4 predetermined viewing direction at least in sections behind the annular collar 180 of Fig. 1 arranged and their blocking webs 111, 113, 115 are each arranged between assigned radially outward projections 174, 175 or 176, 177 or 172, 173. The blocking webs 111, 113, 115 therefore bear against the force transmission members 185, 187 and 183 of the clutch housing 130 and release the pressure ring 170 in the axial direction. This can thus of the balls 389 of Fig. 3 against the force of the spring elements 311, 312, 313, 314, 315, 316 are axially displaced relative to the clutch housing 130, its radially inward extensions 471, 472, 473, 474, 475, 476 in the axially aligned grooves 481, 482, 483, 484, 485 and 486 of the clutch housing 130 slide.

Fig. 5 zeigt die perspektivische Draufsicht und die Schnittansicht von Fig. 4, bei der zur Einstellung der Moduseinstelleinrichtung 150 für einen Betrieb der Handwerkzeugmaschine 100 von Fig. 1 bis 3 im Bohrmodus die Betätigungshülse 155 und mit dieser die Schalthülse 110 um einen vorgegebenen Winkel, z. B. in Fig. 5 im Uhrzeigersinn, in eine zugeordnete Bohrstellung verdreht wurden. Im Bohrmodus liegt das Verriegelungsteil 223 ebenfalls, wie bei Fig. 2 beschrieben, auf den Deaktivierungsstegen 117, 118, 119 der Schalthülse 110 auf. Fig. 5 shows the perspective top view and the sectional view of Fig. 4 , in the setting of the mode setting device 150 for an operation of the hand machine tool 100 of 1 to 3 in drilling mode, the actuating sleeve 155 and with this the switching sleeve 110 by a predetermined angle, for. B. in Fig. 5 have been turned clockwise into an assigned drilling position. In the drilling mode, the locking part 223 is also located as in Fig. 2 described, on the deactivation webs 117, 118, 119 of the switching sleeve 110.

Gemäß einer Ausführungsform sind im Bohrmodus die Haltestege 112, 114, 116 der Schalthülse 110 in der in Fig. 5 vorgegebenen Blickrichtung zumindest abschnittsweise hinter dem Ringkragen 180 von Fig. 1 angeordnet und ihre Blockierstege 111, 113, 115 blockieren radial auswärts gerichtete Vorsprünge des Druckrings, illustrativ die Vorsprünge 175, 177 bzw. 173. Somit ist der Druckring 170 im Bohrmodus in axialer Richtung der Abtriebswelle 140 durch die Blockierstege 111, 113, 115 der Schalthülse 110 axial lagefixiert und dementsprechend nicht axial verschiebbar. Somit ist die Drehmomentenkupplung deaktiviert.According to one embodiment, the holding webs 112, 114, 116 of the switching sleeve 110 are in the drilling mode in the in Fig. 5 predetermined viewing direction at least in sections behind the annular collar 180 of Fig. 1 arranged and their blocking webs 111, 113, 115 block radially outward projections of the pressure ring, illustratively the projections 175, 177 and 173, respectively. Thus, in the drilling mode, the pressure ring 170 is in the axial direction of the output shaft 140 through the blocking webs 111, 113, 115 of the switching sleeve 110 axially fixed and therefore not axially displaceable. The torque clutch is thus deactivated.

Fig. 6 zeigt die perspektivische Draufsicht und die Schnittansicht von Fig. 4 bzw. 5, bei der zur Einstellung der Moduseinstelleinrichtung 150 für einen Betrieb der Handwerkzeugmaschine 100 von Fig. 1 bis 3 im Schlagbohrmodus die Betätigungshülse 155 und mit dieser die Schalthülse 110 um einen vorgegebenen Winkel, z. B. in Fig. 6 im Uhrzeigersinn, in eine zugeordnete Schlagbohrstellung verdreht wurden. Im Schlagbohrmodus liegt das Verriegelungsteil 223, wie bei Fig. 2 beschrieben, nicht auf den Deaktivierungsstegen 117, 118, 119 der Schalthülse 110 auf. Fig. 6 shows the perspective top view and the sectional view of Fig. 4 or 5, in which to set the mode setting device 150 for operating the handheld power tool 100 from 1 to 3 in percussion drilling mode, the actuating sleeve 155 and with this the switching sleeve 110 by a predetermined angle, for. B. in Fig. 6 clockwise, in an assigned percussion drilling position were twisted. In the percussion drilling mode, the locking part 223 is as in Fig. 2 described, not on the deactivation webs 117, 118, 119 of the switching sleeve 110.

Gemäß einer Ausführungsform sind im Schlagbohrmodus die Haltestege 112, 114, 116 der Schalthülse 110 in der in Fig. 6 vorgegebenen Blickrichtung zumindest abschnittsweise hinter dem Ringkragen 180 von Fig. 1 angeordnet und ihre Blockierstege 111, 113, 115 blockieren radial auswärts gerichtete Vorsprünge des Druckrings, illustrativ die Vorsprünge 175, 177 bzw. 173 von Fig. 4 und 5. Somit ist der Druckring 170 im Schlagbohrmodus in axialer Richtung der Abtriebswelle 140 durch die Blockierstege 111, 113, 115 der Schalthülse 110 axial lagefixiert und dementsprechend nicht axial verschiebbar.According to one embodiment, in the percussion drilling mode, the holding webs 112, 114, 116 of the switching sleeve 110 are in the in Fig. 6 predetermined viewing direction at least in sections behind the annular collar 180 of Fig. 1 arranged and their blocking webs 111, 113, 115 block radially outward projections of the pressure ring, illustratively the projections 175, 177 and 173 of Fig. 4 and 5 , Thus, the pressure ring 170 in the percussion drilling mode is axially fixed in position in the axial direction of the output shaft 140 by the blocking webs 111, 113, 115 of the switching sleeve 110 and accordingly cannot be axially displaced.

Claims (14)

  1. Portable power tool (100) for operation in a percussion drilling, a drilling and a screwing mode, which has a mode setting device (150) with an actuating element (155) and a setting element (110), and a gear mechanism (120) for driving an output shaft (140), wherein the actuating element (155) and the setting element (110) are connected together for conjoint rotation and the setting element (110), at least in one operating mode, is coupled to a transmission element (170) of the portable power tool (100), said transmission element (170) being mounted on a clutch housing (130) assigned to the gear mechanism (120) and being axially displaceable on the clutch housing (130) in a screwing position assigned to the screwing mode and being axially fixed to the clutch housing (130) in percussion drilling and drilling positions assigned to the percussion drilling and drilling mode, wherein the transmission element (170) is connected to the clutch housing (130) for conjoint rotation and a predetermined operating mode is settable by rotating the setting element (110), wherein the setting element (110) and transmission element (170) are rotatable relative to one another and the setting element (110) at least partially engages around the transmission element (170), characterized in that the setting element (110) is fixed to the clutch housing (130) so as to be substantially immovable in an axial direction by holding elements (112, 114, 116) of the setting element (110) engaging, in the manner of a bayonet connection (112, 114, 116, 180), behind an annular collar (180) of the clutch housing (130), wherein the clutch housing (130) is configured in a sleeve-like manner and has the annular collar (180) on its outer circumference.
  2. Portable power tool according to Claim 1, characterized in that the transmission element (170) is configured in a disc-like manner.
  3. Portable power tool according to Claim 1 or 2, characterized in that the transmission element (170) has fixing members (172, 173, 174, 175, 176, 177, 471, 472, 473, 474, 475, 476), via which the transmission element (170) is fixed to the clutch housing (130) for conjoint rotation.
  4. Portable power tool according to Claim 3, characterized in that the fixing members (172, 173, 174, 175, 176, 177, 471, 472, 473, 474, 475, 476) have radially outwardly directed extensions (173, 175, 177), via which the transmission element (170) is axially fixed to the clutch housing (130) in the percussion drilling and drilling mode.
  5. Portable power tool according to one of the preceding claims, characterized in that the setting element (110) is configured in a sleeve-like manner.
  6. Portable power tool according to one of the preceding claims, characterized in that the setting element (110) has securing elements (111, 112, 113, 114, 115, 116), which are configured to allow or prevent the axial displaceability of the transmission element (170) on the clutch housing (130).
  7. Portable power tool according to Claim 6, characterized in that the securing elements (111, 112, 113, 114, 115, 116) have blocking elements (111, 113, 115), via which the transmission element (170) is axially fixed to the clutch housing (130) in the associated percussion drilling or drilling position in the percussion drilling and drilling mode, wherein the blocking elements (111, 113, 115) release the transmission element (170) in an axial direction in the screwing mode.
  8. Portable power tool according to one of the preceding claims, characterized in that force transmission members (183, 185, 187) for transmitting force axially from the setting element (110) to the clutch housing (130) in at least one operating mode are provided on the clutch housing (130) .
  9. Portable power tool according to Claim 8, characterized in that the force transmission members (183, 185, 187) are configured in the manner of axially directed extensions on the annular collar (180) .
  10. Portable power tool according to one of the preceding claims, characterized in that the output shaft (140) is assigned a catch mechanism (216, 217) for generating impacts in the percussion drilling mode, and the setting element (110) has deactivating elements (117, 118, 119) for deactivating the catch mechanism (216, 217).
  11. Portable power tool according to one of the preceding claims, characterized in that the actuating element (155) is configured in the manner of an actuating sleeve that is rotatable by manual actuation.
  12. Portable power tool according to Claim 11, characterized in that the setting element (110) and the actuating element (155) are formed in one piece.
  13. Portable power tool according to one of the preceding claims, characterized in that at least one spring element (311, 312, 313, 314, 315, 316) is provided, which is configured to subject the transmission element (170) to a predetermined spring force axially in the direction of the percussion drilling and drilling position.
  14. Portable power tool according to Claim 13, characterized in that the predetermined spring force is settable within predetermined limits via an assigned torque setting device (160).
EP11796651.5A 2010-12-22 2011-11-29 Portable power tool Active EP2655019B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010063953A DE102010063953A1 (en) 2010-12-22 2010-12-22 Hand tool
PCT/EP2011/071270 WO2012084428A1 (en) 2010-12-22 2011-11-29 Portable power tool

Publications (2)

Publication Number Publication Date
EP2655019A1 EP2655019A1 (en) 2013-10-30
EP2655019B1 true EP2655019B1 (en) 2020-01-08

Family

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EP11796651.5A Active EP2655019B1 (en) 2010-12-22 2011-11-29 Portable power tool

Country Status (5)

Country Link
US (1) US9849574B2 (en)
EP (1) EP2655019B1 (en)
CN (1) CN103260830B (en)
DE (1) DE102010063953A1 (en)
WO (1) WO2012084428A1 (en)

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Also Published As

Publication number Publication date
DE102010063953A1 (en) 2012-06-28
CN103260830A (en) 2013-08-21
CN103260830B (en) 2016-08-10
WO2012084428A1 (en) 2012-06-28
US9849574B2 (en) 2017-12-26
EP2655019A1 (en) 2013-10-30
US20130333907A1 (en) 2013-12-19

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