EP3720659B1 - Hand-held power tool with a mode-setting device - Google Patents
Hand-held power tool with a mode-setting device Download PDFInfo
- Publication number
- EP3720659B1 EP3720659B1 EP18808336.4A EP18808336A EP3720659B1 EP 3720659 B1 EP3720659 B1 EP 3720659B1 EP 18808336 A EP18808336 A EP 18808336A EP 3720659 B1 EP3720659 B1 EP 3720659B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mode
- gear
- torque
- power tool
- setting
- 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.)
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Links
- 230000008878 coupling Effects 0.000 claims description 87
- 238000010168 coupling process Methods 0.000 claims description 87
- 238000005859 coupling reaction Methods 0.000 claims description 87
- 230000005540 biological transmission Effects 0.000 claims description 62
- 230000007246 mechanism Effects 0.000 claims description 29
- 230000003213 activating effect Effects 0.000 claims description 10
- 238000005553 drilling Methods 0.000 description 50
- 238000009527 percussion Methods 0.000 description 28
- 230000000903 blocking effect Effects 0.000 description 19
- 230000009849 deactivation Effects 0.000 description 14
- 230000008859 change Effects 0.000 description 11
- 230000004913 activation Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
-
- 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
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
-
- 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
- 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
- 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-held power tool with a housing in which a drive motor and a gear that can be driven by the drive motor for driving an output shaft are arranged, with a mode setting device being provided which has at least one rotatable actuating element for setting the operating mode, a torque setting element for setting the torque and a gear changeover element for Having gear shifting of the transmission.
- a handheld power tool of this type designed as a drill and impact drill is known from the prior art.
- the hand-held power tool has a drive motor arranged in a housing and a gear.
- the drive motor drives the gearbox to drive an output shaft.
- the hand-held power tool can be set to different operating modes, e.g. a screwing mode, a drilling mode and a percussion drilling mode.
- the handheld power tool has a mode setting device provided with a rotatable actuating element. By rotating the actuating element, an operating mode is set, in which a torque setting assigned to the respective operating mode, a gear setting of the transmission and optionally an activation/deactivation of a percussion mechanism takes place.
- a torque setting and a gear change take place via an inner contour assigned to the actuating element.
- the EP 2 062 697 A1 describes a screwdriver with a housing and a motor, which is coupled via a gear with an output element.
- the present invention provides a hand-held power tool with a housing in which a drive motor and a gear that can be driven by the drive motor for driving an output shaft are arranged, with a mode setting device being provided which has at least one rotatable actuating element for setting the operating mode, a torque setting element for setting the torque and a gear shifting element for changing gears of the transmission.
- the torque setting element and the gear shifting element are detachably coupled to each other during gear shifting.
- the invention thus makes it possible to provide a hand-held power tool in which simple and safe operation of the mode setting device can be made possible by the detachable coupling of the torque setting element to the gear shifting element.
- a single actuating element can thus be provided in a simple manner, by means of which an automatic gear change can be made possible.
- the torque setting element and the gear shifting element are preferably decoupled from one another when the torque is set.
- the gear ratio can thus be arranged unchanged in first gear in a simple and uncomplicated manner over an entire adjustable torque setting range, including a maximum torque position of the torque setting element.
- the mode setting device has a coupling element which is movably arranged on the torque setting element. A compact and robust coupling can thus be made possible.
- the coupling element is arranged pivotably on the torque setting element.
- a suitable arrangement of the coupling element can thus be made possible in a simple and uncomplicated manner.
- the coupling element is preferably arranged on the torque setting element in an axially movable manner.
- An alternative arrangement of the coupling element can thus be made possible in a simple manner.
- the coupling element preferably has a guide element which, when the actuating element rotates, interacts with a guide track fixed to the housing.
- the guide element is preferably formed in the radial direction of the mode setting device. A robust and reliable guidance of the guide element in the guideway can thus be made possible.
- the guide track is formed in the circumferential direction on an inner surface of the housing. A compact and uncomplicated arrangement of the guideway can thus be made possible.
- the gear shifting element is preferably rotatably mounted.
- a rotational movement of the actuating element can be transmitted to the gear shifting element for gear shifting.
- a torque limiting device is preferably provided, with the torque setting element interacting with the torque limiting device. Activation and/or deactivation of the torque limiting device via the mode setting device can thus be made possible in a simple manner.
- a hammer mechanism is provided, with the mode setting device being designed to activate and/or deactivate the hammer mechanism.
- the mode setting device being designed to activate and/or deactivate the hammer mechanism.
- the transmission is preferably designed in the manner of a planetary gear with a switching ring gear that can be displaced via a shift bracket, the gear shifting element having an actuating element for actuating the shift bracket at least during a gear change.
- a gear change can thus be made possible in a simple and reliable manner.
- the gear shifting element is preferably assigned a mode display element which, when the operating mode is set, in the longitudinal direction of the housing is moved and a respectively assigned operating mode is visualized.
- a currently set operating mode can thus be made clear to a user in a simple and uncomplicated manner.
- the mode display element is preferably designed as an actuation element for actuation of the switch bracket and/or for mode display.
- a suitable mode display element can thus be provided in a simple manner.
- the gear shifting element has a guide pin and the mode indicator element has a guide groove, the guide pin moving the mode indicator element along the guide groove when an operating mode is set.
- a simple and space-saving operating mode display can thus be provided.
- FIG. 1 shows an exemplary hand-held power tool 100 with a housing 110 in which at least one drive motor 120 for driving an insertable tool that can be arranged in a tool holder 180 and is preferably exchangeable is arranged.
- Control electronics 140 are preferably assigned to hand-held power tool 100 at least for controlling drive motor 120 .
- the tool holder 180 is illustratively designed as a chuck attachment with three clamping jaws 182, 184, for example, but could also be designed as a quick-action chuck.
- the housing 110 preferably has a handle 126 with a manual switch 117 .
- the drive motor 120 can be actuated, ie switched on and off, for example via the hand switch 117, and preferably electronically controlled or regulated in such a way that both reverse operation and specifications with regard to a desired rotational speed can be implemented.
- a direction of rotation switch 116 is preferably arranged in the area of the manual switch 117, via which a direction of rotation of the drive motor 120 or of an output shaft assigned to the drive motor 120 (205 in 2 ) is adjustable.
- the handheld power tool 100 can preferably be connected to a battery pack 130 for mains-independent power supply, but can alternatively also be operated mains-dependent.
- the hand-held power tool 100 preferably has a switchable transmission 150 that can be switched between at least a first and a second gear.
- Gear 150 is preferably designed in the manner of a planetary gear.
- Hand-held power tool 100 is preferably designed in the manner of a percussion drill or drill/screwdriver, with the first gear corresponding to a screwdriving mode, for example, and the second gear to a drilling and/or percussion drilling mode.
- the screwing mode is assigned to the first gear
- the drilling mode and the hammer drilling mode are assigned to the second gear.
- a mode setting device 160 is preferably used to set the various operating modes.
- An operating mode can preferably be set by rotating the mode setting device 160 in the circumferential direction.
- an operating mode setting, a torque setting and/or a gear change can take place by rotating the mode setting device 160 in the circumferential direction.
- the mode setting device 160 is assigned a mode display element 170 which is designed to visualize a set operating mode, torque and/or a gear stage.
- the mode display element 170 is illustratively arranged on a top side of the housing 110 or on a side of the housing 110 opposite the handle 126 . However, the mode display element 170 could also be arranged at any other location on the hand-held power tool 100 .
- FIG 2 shows the handheld power tool 100 from FIG 1 with the housing 110 in which the drive motor 120 and the drive motor 120 can be driven gear 150 for driving an output shaft 205 are arranged.
- the housing 110 preferably has two housing shells 111, with 2 only one of the two housing shells 111 is shown to illustrate the mode setting device 160 .
- At least one rotatable actuating element 240 for setting the operating mode, one torque setting element 220 for setting the torque, and/or one gear shifting element 230 for shifting gears of transmission 150 is preferably assigned to mode setting device 160 .
- the operating element 240 is assigned to the mode setting device 160 for setting the various operating modes.
- the actuating element 240 is preferably rotatably connected to the mode setting device 160 such that a rotation of the actuating element 240 in the circumferential direction 204 results in an operating mode setting, a torque setting and/or a gear shift.
- the torque adjustment member 220 is non-rotatably connected to the actuating member 240 .
- the torque setting element 220 preferably has an annular base body 221 .
- the torque setting element 220 preferably has a coupling element 222 on its side facing the drive motor 120 .
- the mode setting device 160 preferably has the coupling element 222 which is movably arranged on the torque setting element 220 .
- the coupling element 222 is preferably arranged pivotably on the torque setting element 220 .
- the coupling element 222 is preferably designed as an in particular elastic coupling arm 223 .
- the coupling element 222 is formed in the direction of the drive motor or at least in the longitudinal direction 206 of the housing 110 .
- the coupling element 222 is formed in the longitudinal direction 206 of the housing 110 and in the circumferential direction 204 of the housing 110, wherein the coupling element 222 has a first section 225 formed in the longitudinal direction 206 and a second section 227 formed in the circumferential direction 204.
- the coupling element 222 in particular the second section 227, preferably has a coupling recess 226 for coupling to the gear shifting element 230.
- the coupling recess 226 preferably engages in a coupling projection 236 of the gear shifting element 230 during coupling.
- the coupling element 222 preferably has a guide element 224, preferably on the second section 227.
- the guide element 224 is preferably formed in the radial direction 202 of the mode setting device 160 or radially outwards towards the housing 110 .
- the guide element 224 preferably interacts with a guide track 266 fixed to the housing when the actuating element 240 rotates.
- the guide track 266 is preferably formed in the circumferential direction 204 on an inner surface 219 of the housing 110 .
- the guide track 266 is formed on an inner surface 219 of a housing shell 111 .
- the guide track 266 is preferably formed by at least two housing ribs 260 fixed to the housing.
- a guide web 262 fixed to the housing and a decoupling web 264 preferably form the guide track 266 .
- the gear shifting element 230 preferably has an annular base body 231 and is preferably rotatably mounted.
- the base body 231 has a stepped area 238 at least in sections, it being possible for the coupling arm 223 of the torque setting element 220 to be arranged in the stepped area 238 .
- the base body 231 has the coupling projection 236, the coupling recess 226 of the torque setting element 220 preferably engaging in the coupling projection 236 during coupling.
- the base body 231 has at least one expansion area 237 formed in the longitudinal direction 206 of the housing 110 on its end facing the torque setting element 220 .
- the expansion area 237 is preferably used as a deactivation element for an optional striking mechanism (510 in figure 5 ) and is hereinafter referred to as "deactivation element 239".
- the gear shifting element 230 or the base body 231 preferably has an expanded region 232 formed in the longitudinal direction 206 of the housing 110 at its end facing the drive motor 120 .
- the extended area 232 preferably has a link track 234 .
- a guide pin (374 in 3 ) of a loading element 270 is arranged.
- the application element 270 is preferably designed to bring about a gear change of the transmission 150 embodied as a planetary gear, for example.
- the planetary gear is equipped with a ring gear (547 in figure 5 ) educated.
- the application element 270 is designed to act on the shift bracket 254 at least during a gear shift.
- the switch bracket 254 is preferably designed as a wire bracket.
- the transmission 150 is arranged in a transmission housing 250, which preferably has a first and second transmission housing part 252, 253.
- the first gear housing part 252 is illustratively arranged facing the drive motor 120 and the second gear housing part 253 is arranged facing the torque setting element 220 .
- the gear shifting element 230 is preferably assigned the mode display element 170, which is moved in the longitudinal direction 206 of the housing 110 when an operating mode is set and visualizes or clarifies a respectively assigned operating mode.
- the housing 110 illustratively the housing shell 111, has a recess 212 for visualizing the current operating mode.
- the mode display element 170 has a guide area 172 with a guide recess 174 for visualizing the current operating mode.
- a guide pin (332 in 3 ) in the guide recess 174 can be arranged.
- the torque setting element 220 and the gear shifting element 230 are detachably coupled to one another when shifting gears. Furthermore, the torque setting element 220 and the gear shifting element 230 are decoupled from one another when the torque is set.
- the coupling element 222 preferably detachably couples the torque setting element 220 and the gear shift element 230 . Furthermore, the coupling element 222 is preferably movably arranged on the torque setting element 220 such that when a gear is shifted, the torque setting element 220 is coupled to the gear shifting element 230 and/or preferably when the torque is set, the torque setting element 220 is decoupled from the gear shifting element 230.
- FIG 3 shows the mode setting device 160 of FIG 2 with the torque setting element 220 and the gear shifting element 230, as well as the exemplary planetary gear 150 arranged in the gear housing 250 3 the coupling projection 236 of the base body 231, the coupling recess 226 of the torque setting element 220 being arranged on the coupling projection 236. Furthermore clarified 3 a guide pin 332 assigned to the extended area 232 of the gear shifting element 230 and which can be arranged in the guide recess 174 of the mode display element 170 .
- the activating element 270 shows 3 a guide pin 374 of the activating element 270 arranged in the link track 234.
- the activating element 270 is arranged in a receptacle 352 of the first transmission housing part 252.
- the activating element 270 preferably has a recess 372 for arranging the switch bracket 254 in sections.
- FIG 4 shows one of the preferably two housing shells 111 of the housing 110 of the hand-held power tool 100 from FIG 1 .
- figure 5 shows the mode setting device 160 of FIG 3 with the torque setting element 220 and the gear shifting element 230 as well as the transmission 150.
- the planetary gear 150 preferably has at least a first and second, illustratively a first, second and third planetary stage 542, 544, 546, which illustratively enable operation of the planetary gear 150 in a first and a second gear stage.
- each gear step is preferably assigned to a corresponding operating mode, for example a screwing mode, drilling mode and/or an impact drilling/impact screwing mode.
- a tightening mode may be provided for performing a torque-limiting tightening operation in a first gear while a drilling operation and/or a drilling or Screwdriving operation with an impact function is intended to be carried out in a second gear, etc.
- the planetary gear 150 preferably has an axially displaceable switching element 547, which is preferably designed as a ring gear and is referred to below as “ring gear 547”.
- the switching ring gear 547 is preferably displaceable between at least two axial positions, one axial position being assigned to a gear step.
- ring gear 547 is designed as a ring gear of the second planetary gear stage, but alternatively ring gear 547 can also be designed as an additional ring gear of planetary gear 150 .
- a detailed description of the gear 150 is omitted here for the sake of simplicity of the description.
- the gear-shifting element 230 is preferably rotated, as a result of which the guide pin 374 of the activating element 270 preferably moves along the link path 234 .
- the activating element 270 is moved axially, as a result of which the switching clip 254 moves the switching ring gear 547 axially or a gear change takes place.
- clarified figure 5 an optional percussion mechanism 510, illustratively designed as a notched percussion mechanism, which can preferably be activated in percussion drilling mode.
- a notched hammer mechanism is only of an exemplary nature and is not to be seen as a limitation of the invention.
- the hammer mechanism 510 can also be designed as any other hammer mechanism, for example as a wobble hammer mechanism.
- a locking element 518 is provided for activating and/or deactivating the hammer mechanism 510 or a corresponding hammer drilling mode.
- the locking element 518 is preferably acted upon by deactivation elements 239 of the gear shifting element 230 at an end of the gear shifting element 230 facing the drive shaft 205 .
- the locking element 518 can be moved in the axial direction and the impact mechanism 510 is activated.
- Gear shifting element 230 is preferably coupled, at least in one operating mode, to a transmission element 529 that is mounted on transmission housing part 253 .
- the transmission element 529 In a screwing position assigned to the screwing mode, the transmission element 529 is preferably mounted in an axially displaceable manner on the gear housing part 253 and is fixed axially on the gear housing part 253 in the hammer drilling and drilling mode assigned hammer drilling and drilling positions.
- the transmission element 529 is disk-shaped in the manner of a pressure plate or a pressure plate and is referred to below as “pressure plate 529”.
- the pressure plate 529 is preferably in contact with the transmission housing part 253 on its side facing the output shaft 205 .
- the pressure plate 253 is preferably connected to the transmission housing part 253 in a rotationally fixed manner.
- the mode setting device 160 in particular the gear shifting element 230, preferably has at least one blocking element 299, via which the pressure plate 529 is axially fixed in the associated hammer drilling or drilling position on the transmission housing part 253 in the percussion drilling or drilling mode.
- the at least one blocking element 299 preferably releases pressure plate 529 in the axial direction.
- the at least one blocking element 299 is preferably arranged on a side of gear shifting element 230 that faces torque setting element 220 or output shaft 205.
- the at least one blocking element 299 is preferably formed in one piece with the gear shifting element 230.
- hand-held power tool 100 has an optional torque-limiting unit 520 .
- the optional torque limiting unit 520 is preferably assigned to the torque setting element 220 .
- the torque limiting unit 520 is preferably activated in the first operating mode, preferably the screwing mode of the hand-held power tool 100, since the transmission element 529 is preferably released in the screwing mode and can therefore be moved axially.
- the transmission element 529 is preferably coupled to the torque limiting unit 520 . If the maximum transmittable value set by the torque limiting unit 520, in particular the torque setting element 220, is exceeded torque, the transmission element 529 moves axially and decouples the transmission 150 from the output shaft 205.
- a maximum transmittable torque can preferably be set by the torque setting element 220 or the actuating element 240 .
- the torque setting element 220 is preferably non-rotatably connected to the actuating element 240 .
- the torque setting element 220 is preferably fixed in position axially on the transmission housing part 253 .
- the torque setting element 220 preferably has an internal thread 524 for setting the maximum torque that can be transmitted, which thread engages in an external thread 522 of a spring holder 526 .
- the spring holder 526 preferably has at least one holding section 597, which is preferably formed in the direction of the transmission 150.
- the at least one holding section 597 is designed for arranging at least one spring element 527.
- the at least one spring element 527 is designed to act on transmission element 529.
- the at least one spring element 527 is preferably compressed when the set, maximum transmissible torque is exceeded, so that the transmission element 529 can move axially and can preferably decouple the transmission 150.
- the spring retainer 526 is preferably seated on the gear housing part 253 in a rotationally fixed but axially movable manner.
- the retaining plate 599 preferably encompasses the output shaft 205 and presses a detent spring holder 532 against an annular shoulder 535 in the torque setting element 220.
- the torque setting element 220 is thus preferably also secured axially on the transmission housing part 253.
- the torque setting element 220 In order for the torque setting element 220 to latch in discrete latching positions when rotated to set a maximum transmissible torque, it is preferably subjected to a force by a latching spring element 534 .
- the detent spring element 534 is preferably held on the detent spring holder 532 .
- the detent spring holder 532 and the detent spring element 534 are preferably arranged in an interior space encompassed by the torque setting element 220 .
- the detent spring element 534 preferably engages in discrete angular positions in that, for example, a detent contour on an inner side of the torque setting element 220 facing the output shaft 205 is acted upon by the detent spring element 534 .
- the output shaft 205 is preferably adjusted between a percussion drilling position and a drilling or screwing position by means of an axial adjusting movement.
- the output shaft 205 can be figure 5 illustratively shifted to the left, that is, into the transmission housing part 253 .
- the locking cup 512 preferably comes into locking engagement with a locking disk 514, which is preferably seated in a rotationally fixed manner on the lateral surface of the output shaft 205 and forms a locking mechanism with the locking cup 512.
- the locking disk 514 also has the task of axially fixing the ball bearing 519, which is also seated on the lateral surface of the output shaft 205, on the latter.
- a spring element 516 is preferably arranged inside the locking cup 512, which applies a force to the output shaft 205 via the locking element 518 and the ball bearing 519 into an associated disengaged position in which the locking cup 512 and the locking disk 514 are not engaged.
- the pressure plate 529 preferably has an annular base body.
- portions 582 formed radially inward are formed on an inner periphery of the pressure plate 529 .
- a section 583 is preferably arranged between two adjacent sections 582, with the sections 582 each being formed further radially inwards than the sections 583. This results in an arrangement of the pressure plate 529 which is preferably fixed in the circumferential direction but can be moved axially.
- Each section 282 is assigned a recess 257 .
- the pressure plate 257 has on its outer surface projections 581 which are preferably formed radially outwards, with a receiving area 584 being formed between two projections 581 .
- the gear shifting element 230 preferably has at least one, illustratively and preferably three, blocking elements 299, with a receptacle 298 being formed between each two blocking elements 299. Fix the blocking elements 299 preferably the pressure plate 529 in the percussion drilling or drilling mode on the transmission housing part 253 axially, with a projection 581 being present on a blocking element 299 in each case. In the screwing mode, the blocking elements 299 preferably release the pressure plate 529 in the axial direction.
- the projections 281 are arranged in the receptacles 298 and the pressure plate 529 can be moved axially, as a result of which the torque limiting unit 520 is activated.
- the detent spring element 534 which is assigned to the detent spring holder 532. As described above, the detent spring element 534 preferably acts on the torque setting element 220 when rotated in order to set a maximum transmissible torque in the discrete detent positions.
- the locking element 518 which has an annular base body 511, which is designed for arranging the locking element 518 on the output shaft 205. At least one, illustratively three, legs 517 are arranged on the base body 511 and are formed radially outwards. Such a locking element 518 is also known as a so-called tripod.
- the locking element 518 In the screwing and/or drilling mode, the locking element 518 is acted upon by the deactivation element 239 of the gear shifting element 230 and an axial movement of the locking element 518 is prevented, as a result of which the percussion mechanism 510 is deactivated.
- the locking element 518 or the legs 517 are arranged in the receptacles 298 and can therefore be moved axially, so that the percussion mechanism 510 is activated.
- the first operating mode is preferably a screwing mode. This makes it clear 7 the arranged in the coupling recess 226 coupling projection 236 of the gear shifting element 230. According to 7 a first gear of the transmission 150 active.
- FIG 8 shows the handheld power tool 100 from FIG 7 in another operating mode.
- gear shifting element 230 in FIG 8 rotated in the circumferential direction 204 to 7 arranged.
- Preferred is the mode of operation shown a drill or percussion mode in which a second gear ratio of the transmission 150 is activated. This makes it clear 8 the guide pin 332 arranged in the guide recess 174 of the mode display element 170.
- FIG 9 shows the handheld power tool 100 from FIG 1 seen from above and illustrates the recess 212 for visualizing the current operating mode. Furthermore shows 9 a marking 630 for visualizing a current operating mode on the actuating element 240.
- the marking 630 is illustratively designed as a triangle, but could also have any other shape.
- the mode display element 170 visualizes an exemplary screw symbol 614, which is assigned to the screwing mode, through the recess 212.
- the actuating element 240 preferably has a setting mark 620 on its outer circumference.
- the setting mark 620 preferably has a first setting area 622 for setting a maximum torque that can be transmitted.
- the torque setting range 622 is preferably visualized by lines that become larger in the circumferential direction 204 .
- an adjustable torque variable can also be visualized in another way, for example by torque values in the form of numerical values.
- 11 shows the handheld power tool 100 from FIG 9 and 10 in a second operating mode designed as a drilling mode.
- the mode display element 170 visualizes an exemplary drill symbol 612 through the recess 212, which is assigned to the drilling and/or percussion drilling mode.
- the actuating element 240 has an adjustment area 624 associated with the optional drilling mode on its adjustment marking 620 .
- the setting area 624 visualizes the drilling mode by a drill.
- the setting area 626 visualizes the impact drilling mode by a hammer. It is pointed out that the different setting ranges 622-626 can also be visualized by any other symbols, for example by letters.
- mode setting device 700 shows the mode setting device 160 of FIG Figures 1 to 8 , which is designed according to a further embodiment and is referred to below as mode setting device 700 .
- the mode setting device 700 is assigned an actuating element 740 with a torque setting element 721, a gear shifting element 730 and a mode display element 770.
- the same components of the two embodiments of the handheld power tool 100 with the mode setting device 160 or 700 are numbered the same.
- the transmission 150 which is preferably designed as a planetary transmission, is found in FIG Figures 1 to 11 also application in the in 12 shown embodiment of the mode setting device 700.
- the torque setting element 72 analogous to the torque setting element 220 of Figures 2 to 11 , preferably associated with a coupling element 720, which preferably has a guide element 725, which interacts with the housing-fixed guideway 266 of the housing 110 or the housing shell 111 when the actuating element 740 rotates.
- the guide element 725 is formed in the radial direction 202 of the mode setting device 700 , analogously to the guide element 224 .
- the coupling element 720 is designed as a coupling ring 722.
- the guide element 725 and/or a coupling projection 724 is preferably assigned to the coupling ring 722 .
- the coupling projection 724 preferably engages, analogously to the coupling projection 236 of the gear shifting element 230 Figures 2 to 11 , when coupling into a coupling recess 736 of the gear shifting element 730.
- the coupling projection 724 is preferably designed in the manner of a parallelogram, but can also have any other shape.
- the guide element 725 and the coupling projection 724 are preferably formed in one piece, with the coupling ring 722, the guide element 725 and the coupling projection 724 preferably being formed in one piece.
- the coupling element 720 is preferably arranged so that it can move axially on the torque setting element 721 . Preferred are in the in 12 shown embodiment, the torque setting element 721 and the actuating element 740 integrally formed.
- the gear shifting element 730 preferably has an annular base body 731 and is preferably rotatably mounted.
- the base body 731 has a stepped area 738 at least in sections, it being possible for the coupling ring 722 to be arranged in the stepped area 738 .
- the base body 731 has the coupling recess 736 .
- the coupling recess 736 is preferably of rectangular design, but can also have a different shape associated with the coupling projection 724 .
- the base body 731 has at least one region 737 formed in the longitudinal direction 206 of the housing 110 on its end facing the coupling ring 720 .
- the area 737 is preferably designed as a deactivation element for the percussion mechanism 510 and is referred to below as “deactivation element 739”.
- the area 737 has at least one blocking element 795, which is designed to release the pressure plate 529 in the axial direction in the screwing mode, as a result of which the torque limiting unit 520 is preferably activated.
- the gear shifting element 730 or the base body 731 has an expanded region 734 formed in the longitudinal direction 206 of the housing 110 at its end facing the transmission 150 .
- the extended area 734 has a guide pin 732 .
- the mode indicator element 770 preferably has a guide groove 912, with the guide pin 732 moving the mode indicator element 770 along the guide groove 912 when an operating mode is set.
- the mode display element 770 is moved in the longitudinal direction 206 of the housing 110 and a respectively associated operating mode is preferably visualized.
- the mode display element 770 has the drill symbol 612 by way of example 11 for visualizing a drill mode and the screw icon 614 from 10 to visualize a tightening mode.
- an application element 779 is assigned to the mode display element 770, which is designed to act on the shift bracket 254 of the planetary gear 150 during a gear change and thus to bring about a gear change.
- the activating element 779 preferably has two activating webs 771, 773 which form a recess 772 for arranging the switching bracket 254.
- the shift bracket 254 is acted upon by one of the two actuation webs 771, 773 only during a gear change.
- the mode display element 770 is preferably designed as an actuation element 779 for actuation of the switch bracket 254 and/or for mode display of the set operating mode.
- FIG 13 shows the mode setting device 700 of FIG 12 in a screwing mode in which the coupling projection 724 of the coupling ring 720 is arranged outside of the coupling recess 736 of the gear shifting element 730. Furthermore clarified 13 the guide pin 732 arranged in the guide groove 912 of the mode display element 770. In addition, the switching bracket 254 is arranged in the recess 772 in the screwing mode and rests on the actuating web 773 on the illustrative right.
- FIG 14 shows the mode setting device 700 of FIG 13 seen from above in screwing mode. This makes it clear 14 the visualization of the screwing mode by the screw symbol 614, which is visible through the recess 212 arranged in the housing shell 111.
- FIG 15 shows the preferably ring-shaped actuating element 740 of FIG 12 with the preferably integrated torque setting element 721 and the coupling ring 720 arranged in the actuating element 740 from 12 to 14 .
- a direct torque adjustment can take place.
- the actuating element 740 preferably has a receptacle 810 for arranging the coupling ring 720 on its side 802 facing the gear shifting element 730 .
- the actuating element 740 or the receptacle 810 preferably has at least one, illustratively four, rotary driver webs 812 which interact with associated rotary receptacles 822 of the coupling ring 720.
- the rotary mounts 822 are formed on an outer circumference 820 of the coupling ring 720 .
- the rotary driver webs 812 preferably have a rectangular shape, but can also have any other shape, the rotary receptacles 822 associated shape.
- the actuating element 740 or the receptacle 810 has at least one, illustratively three, recesses 814 for arranging a spring element (not shown).
- the spring element is designed to act on the coupling ring 720 radially outwards or to act on the rotary driving webs 812 in the rotary recess 822 .
- the recesses 814 are preferably arranged on a side of the receptacle 810 facing the inner circumference of the actuating element 740 and the rotational driving webs 812 are preferably arranged on a side of the receptacle 810 facing the outer circumference of the actuating element 740 .
- 16 shows the actuator 740 of FIG 15 with the torque setting element 721 and the coupling ring 720. This clarifies 16 the internal thread 524 of the torque setting element 721. Also illustrated 16 the arrangement of the coupling ring 720 in the receptacle 810 of the actuating element 740.
- 17 shows the mode setting device 700 of FIG 12 with the planetary gear 150 from figure 5 in a first grade. This makes it clear 17 the switch bracket 254 which is arranged in the recess 772 and which illustratively bears against the right-hand actuating web 773. Furthermore clarified 17 the internal thread 524 of the torque setting element 721 engaging in the external thread 522 of the spring holder 526.
- 18 shows the handheld power tool 100 from FIG 1 with the mode setting device 700 of FIG Figures 12 to 17 in screwing mode.
- the pressure plate 529 can move in the direction of a double arrow 798 in the axial direction against a spring force of the spring elements 527 assigned to the spring holder 526 .
- the transmission 150 can be decoupled from the output shaft 205 when the maximum transmissible torque is exceeded.
- an optional fan 830 which is preferably and exemplarily arranged between the drive motor 120 and the transmission 150.
- the fan 830 could also be located at any other location be, e.g. at an end of the drive motor 120 facing away from the transmission 150.
- FIG 19 shows the handheld power tool 100 from FIG 18 in screwing mode and illustrates the guide element 725 of the coupling ring 720 arranged in the guideway 266 fixed to the housing of the housing 110 or the housing shell 111.
- a leg 517 associated with the locking element 518 which in 19 screw mode shown is acted upon by the deactivation element 739 of the gear shifting element 730 . This prevents an axial movement of the locking element 518, as a result of which the percussion mechanism 510 is deactivated.
- the pressure plate 529 which can be moved axially in the direction of the double arrow 798.
- the locking element 518 is arranged with its annular base body 511 on the output shaft 205 and illustratively one of the preferably three legs 517 is acted upon by the deactivation element 739 of the gear shifting element 730.
- the leg 517 rests on a side 799 of the gear shifting element 730 that faces away from the transmission 150 .
- gear-shifting element 730 with at least one, illustratively two, preferably three, blocking elements 795, with a receptacle 794 preferably being formed between each two blocking elements 795.
- the locking element 518 or the legs 517 are preferably arranged in the receptacles 794 in the percussion drilling mode.
- FIG 21 shows the mode setting device 700 of FIG 13 in a screwing mode.
- the transmission 150 is in the first gear and the torque limiting unit 520 is activated and the percussion mechanism 510 is deactivated.
- the actuating element 740 is rotated in the direction of an arrow 902 or in the circumferential direction.
- FIG 22 shows the mode setting device 700 of FIG 13 that compared to 21 is rotated in the direction of arrow 902 or in the circumferential direction.
- the guide element 725 of the coupling ring 720 is acted upon by the guide bar 262 in the guide track 266 fixed to the housing 110 or the housing shell 111 .
- the guide element 725 is preferably acted upon by the decoupling web 264, with the coupling projection 724 being acted upon from the coupling recess 736.
- FIG 23 shows the mode setting device 700 of FIG 13 that compared to 22 is rotated in the direction of arrow 902 or in the circumferential direction.
- Guide element 725 of coupling ring 720 is guided along guide track 266 of housing 110 or housing shell 111 fixed to the housing, with coupling projection 724 being moved in the direction of arrow 904 or in the axial direction into coupling recess 736 of gear-shifting element 730.
- the 24 shows the mode setting device 700, from FIG 13 the compared to 23 is rotated further in the direction of arrow 902 or in the circumferential direction.
- the coupling projection 724 of the coupling ring 720 is arranged in the coupling recess 736 of the gear shifting element 730 .
- the guide element 725 is preferably acted upon by the guide web 262 in order to enable a secure arrangement of the coupling projection 724 in the coupling recess 736.
- the arrangement shown preferably illustrates a last position of the screwdriving mode with activated torque limiting device 520.
- FIG 25 shows the handheld power tool 100 from FIG 18 in screwing mode with torque limiting device 520 deactivated.
- torque limiting device 520 When torque limiting device 520 is deactivated, pressure plate 529 is axially fixed, with the at least one blocking element 795 preferably acting on pressure plate 529 and blocking an axial movement of pressure plate 529. Similar to the screwdriving mode with activated torque limiting device 520, impact mechanism 510 is deactivated.
- FIG 26 shows the handheld power tool 100 from FIG 25 in the screwdriving mode with the torque limiting device 520 deactivated, with the percussion mechanism 510 being deactivated analogously to the screwdriving mode with the torque limiting device 520 activated.
- the leg 517 of the locking element 518 facing away from the transmission 150 Page 799 of the gear shifting element 730, since this is acted upon by the deactivation element 739 of the gear shifting element 730.
- FIG 27 shows the handheld power tool 100 from FIG 25 with the torque limiting device 520 deactivated 27 the projection 581 associated with the pressure plate 529, which is blocked by the blocking element 795, so that an axial movement of the pressure plate 529 is blocked.
- FIG 28 shows the handheld power tool 100 from FIG 27 and illustrates those defined by area 737, particularly those defined by the in 28 not shown blocking element 795, blocked pressure plate 529.
- the projections 581 associated with the pressure plate 529 are in contact with the area 737, as a result of which the axial movement of the pressure plate 529 is blocked.
- clarified 28 also shows the arrangement of the pressure plate 529 via the sections 582 in the recesses 257 of the second transmission housing part 253 28 the loading of the pressure plate 529 by the spring elements 527 assigned to the spring holder 526.
- the spring elements 527 preferably act in the region of the sections 582.
- FIG 29 shows the mode setting device 700 of FIG 17 in the screwing mode or in the first gear of the transmission 150.
- the guide pin 732 of the gear shifting element 730 is arranged in the guide groove 912 of the mode display element 770. When changing gears, the guide pin 732 moves along the guide groove 912 or in the direction of an arrow 906.
- 30 shows the mode setting device 700 of FIG 17 , where compared to 29 the guide pin 732 in the direction of arrow 906 of FIG 29 or by rotating the actuating element 740 illustratively upwards. In 30 shows the last position before the gear shift to second gear.
- FIG 31 shows the mode setting device 700 of FIG 17 in the second gear ratio of the transmission 150 or in a drilling mode.
- the guide pin 732 is arranged at an illustratively upper end of the guide groove 912, as a result of which the shift bracket 254 has acted upon the transmission 150 from the first and the second gear.
- the guide groove 912 preferably has an approximately stepped shape. Also clear 32 the two loading webs 771, 773, as well as the recess 772 for arranging the switching bracket 254.
- Figure 33 shows the mode setting device 700 of FIG 17 in drilling mode or in the second gear of transmission 150.
- actuating element 740 is rotated in the direction of arrow 902 or in the circumferential direction, with guide element 725 being moved along guide web 262 and guide pin 732 being guided along guide groove 912.
- the mode display element 770 is displaced axially, with the actuating web 771 illustratively acting on the shift bracket 254 to the right and thus effecting a gear change.
- the shift bracket 254 acts on the ring gear 547 into the position associated with the second gear.
- the drilling mode through the recess 212 is visualized by the exemplary drilling machine symbol 612 .
- 34 shows the handheld power tool 100 from FIG 25 in drilling mode in second gear of transmission 150 34 the ring gear 547 shifting from the first to the second gear ratio, the ring gear gear 547 being arranged in the second gear ratio in the illustrative left-hand position. Furthermore shows 34 the illustratively shifted to the right mode display element 770, wherein the switch bracket 254 is present on the actuating web 771. in 34 Drilling mode shown, the torque limiting device 520 and the impact mechanism 510 are preferably deactivated.
- Figure 35 shows the handheld power tool 100 from FIG 34 in drilling mode.
- the leg 517 of the locking element 518 on the side 799 of the gear shifting element 730 facing away from the transmission 150 since the leg 517 is acted upon by the deactivation element 739 of the gear shifting element 730.
- the gear shifting element 730 in Figure 35 but arranged twisted in the circumferential direction.
- Figure 36 shows the handheld power tool 100 from FIG 34 and Figure 35 in drilling mode and with the torque limiter 520 disabled Figure 36 analogous to 27 the projection 581 assigned to the pressure plate 529, which is blocked at least in sections by the blocking element 795 and thus blocks an axial movement of the pressure plate 529.
- FIG 37 shows the handheld power tool 100 from FIG 18 in drilling mode and illustrates the pressure plate 529 blocked by the area 737.
- the projections 581 associated with the pressure plate 528 are in sections on the area 737, as a result of which the axial movement of the pressure plate 529 is blocked.
- 38 shows the handheld power tool 100 from FIG 18 in percussion drilling mode, wherein the gear shifting element 730 compared to the drilling mode of 37 is twisted further in the circumferential direction. This makes it clear 38 the ring gear 547 arranged in the second gear.
- Figure 39 shows the handheld power tool 100 from FIG 38 in hammer drilling mode, in which the hammer mechanism 510 is activated.
- the legs 517 of the locking element 518 are released from the deactivation element 739 of the percussion mechanism 510 .
- the legs 517 are preferably arranged on the side 799 of the gear shifting element 730 facing away from the transmission 150, in particular in the receptacles 794 of the gear shifting element 730.
- the locking element 518 can be moved in the direction of a double arrow 797 or in the axial direction.
- the spring element 516 arranged within the locking cup 512 is preferably sequentially compressed and decompressed.
- the spring element 516 preferably applies a force to the output shaft 205 via the locking element 518 and the ball bearing 519 into an associated disengaged position in which the locking cup 512 and the locking disk 514 are not engaged.
- figure 40 shows the handheld power tool 100 from FIG 38 and Figure 39 in percussion mode with torque limiter 520 disabled figure 40 , analogous to 27 and Figure 36 , the projection 581 associated with the pressure plate 529, which is blocked at least in sections by the blocking element 795 and thus blocks an axial movement of the pressure plate 529.
- Figure 41 shows the handheld power tool 100 from FIG figure 40 in percussion drilling mode and illustrates the pressure plate 529 blocked by the area 737.
- the projections 581 associated with the pressure plate 528 are preferably in sections on the area 737, as a result of which the axial movement of the pressure plate 529 is blocked.
- the gear-shifting element 230 of the first embodiment can be designed without a link track 234 and preferably have the direct mode setting device 700 of the second embodiment.
- the gear shifting element 730 of the second embodiment can have a link track 234 and preferably have the indirect mode setting device 160 of the first embodiment.
- the coupling elements 220 or 720 can also be used in the respective other embodiment.
- the coupling element 220 can be used in the second embodiment or with the gear shifting element 730 with the preferably direct mode setting device 700 and/or the coupling element 720 can be used with the gear shifting element 230 of the first embodiment.
- the torque setting element 220 can also be designed in one piece with the actuating element 240 in the first embodiment and/or the torque setting element 720 can be connected to the actuating element 740 in two parts, e.g. via a press connection.
- the guide track 266 can also be pressed into the housing 110 via a housing shell, for example.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
- Portable Power Tools In General (AREA)
- Structure Of Transmissions (AREA)
- Percussive Tools And Related Accessories (AREA)
Description
Die vorliegende Erfindung betrifft eine Handwerkzeugmaschine mit einem Gehäuse, in dem ein Antriebsmotor und ein von dem Antriebsmotor antreibbares Getriebe zum Antrieb einer Abtriebswelle angeordnet sind, wobei eine Moduseinstelleinrichtung vorgesehen ist, die zumindest ein drehbares Betätigungselement zur Betriebsmoduseinstellung, ein Drehmomenteinstellelement zur Drehmomenteinstellung und ein Gangumschaltelement zur Gangumschaltung des Getriebes aufweist.The present invention relates to a hand-held power tool with a housing in which a drive motor and a gear that can be driven by the drive motor for driving an output shaft are arranged, with a mode setting device being provided which has at least one rotatable actuating element for setting the operating mode, a torque setting element for setting the torque and a gear changeover element for Having gear shifting of the transmission.
Aus dem Stand der Technik ist eine derartige, als Bohr- und Schlagbohrschrauber ausgebildete Handwerkzeugmaschine bekannt. Die Handwerkzeugmaschine weist einen in einem Gehäuse angeordneten Antriebsmotor und ein Getriebe auf. Dabei treibt der Antriebsmotor das Getriebe zum Antrieb einer Abtriebswelle an. Die Handwerkzeugmaschine ist dabei in unterschiedliche Betriebsmodi, z.B. einen Schraubmodus, einen Bohrmodus und einen Schlagbohrmodus, einstellbar. Zur Betriebsmoduseinstellung weist die Handwerkzeugmaschine eine mit einem drehbaren Betätigungselement versehene Moduseinstelleinrichtung auf. Dabei erfolgt durch ein Verdrehen des Betätigungselements eine Betriebsmoduseinstellung, bei der eine dem jeweiligen Betriebsmodus zugeordnete Drehmomenteinstellung, eine Gangeinstellung des Getriebes und optional eine Aktivierung/Deaktivierung eines Schlagwerks erfolgt. Hierbei findet eine Drehmomenteinstellung und eine Gangumschaltung über eine dem Betätigungselement zugeordnete Innenkontur statt.A handheld power tool of this type designed as a drill and impact drill is known from the prior art. The hand-held power tool has a drive motor arranged in a housing and a gear. The drive motor drives the gearbox to drive an output shaft. The hand-held power tool can be set to different operating modes, e.g. a screwing mode, a drilling mode and a percussion drilling mode. To set the operating mode, the handheld power tool has a mode setting device provided with a rotatable actuating element. By rotating the actuating element, an operating mode is set, in which a torque setting assigned to the respective operating mode, a gear setting of the transmission and optionally an activation/deactivation of a percussion mechanism takes place. Here, a torque setting and a gear change take place via an inner contour assigned to the actuating element.
Aus der
Die
Die vorliegende Erfindung stellt eine Handwerkzeugmaschine mit einem Gehäuse bereit, in dem ein Antriebsmotor und ein von dem Antriebsmotor antreibbares Getriebe zum Antrieb einer Abtriebswelle angeordnet sind, wobei eine Moduseinstelleinrichtung vorgesehen ist, die zumindest ein drehbares Betätigungselement zur Betriebsmoduseinstellung, ein Drehmomenteinstellelement zur Drehmomenteinstellung und ein Gangumschaltelement zur Gangumschaltung des Getriebes aufweist. Das Drehmomenteinstellelement und das Gangumschaltelement sind bei einer Gangumschaltung lösbar miteinander gekoppelt.The present invention provides a hand-held power tool with a housing in which a drive motor and a gear that can be driven by the drive motor for driving an output shaft are arranged, with a mode setting device being provided which has at least one rotatable actuating element for setting the operating mode, a torque setting element for setting the torque and a gear shifting element for changing gears of the transmission. The torque setting element and the gear shifting element are detachably coupled to each other during gear shifting.
Die Erfindung ermöglicht somit die Bereitstellung einer Handwerkzeugmaschine, bei der durch die lösbare Koppelung des Drehmomenteinstellelements mit dem Gangumschaltelement eine einfache und sichere Bedienung der Moduseinstelleinrichtung ermöglicht werden kann. Somit kann auf einfache Art und Weise ein einzelnes Betätigungselement bereitgestellt werden, durch das eine automatische Gangumschaltung ermöglicht werden kann.The invention thus makes it possible to provide a hand-held power tool in which simple and safe operation of the mode setting device can be made possible by the detachable coupling of the torque setting element to the gear shifting element. A single actuating element can thus be provided in a simple manner, by means of which an automatic gear change can be made possible.
Bevorzugt sind das Drehmomenteinstellelement und das Gangumschaltelement bei einer Drehmomenteinstellung voneinander entkoppelt. Somit kann einfach und unkompliziert über einen gesamten einstellbaren Drehmomenteinstellbereich, inklusiv einer maximalen Drehmomentposition des Drehmomenteinstellelements, die Getriebeübersetzung unverändert im ersten Gang angeordnet werden.The torque setting element and the gear shifting element are preferably decoupled from one another when the torque is set. The gear ratio can thus be arranged unchanged in first gear in a simple and uncomplicated manner over an entire adjustable torque setting range, including a maximum torque position of the torque setting element.
Die Moduseinstelleinrichtung weist ein Koppelelement auf, welches bewegbar an dem Drehmomenteinstellelement angeordnet ist. Somit kann eine kompakte und robuste Kopplung ermöglicht werden.The mode setting device has a coupling element which is movably arranged on the torque setting element. A compact and robust coupling can thus be made possible.
Gemäß einer Ausführungsform ist das Koppelelement schwenkbar an dem Drehmomenteinstellelement angeordnet. Somit kann einfach und unkompliziert eine geeignete Anordnung des Koppelements ermöglicht werden. Vorzugsweise ist das Koppelelement axial bewegbar an dem Drehmomenteinstellelement angeordnet. Somit kann auf einfache Art und Weise eine alternative Anordnung des Koppelements ermöglicht werden.According to one embodiment, the coupling element is arranged pivotably on the torque setting element. A suitable arrangement of the coupling element can thus be made possible in a simple and uncomplicated manner. The coupling element is preferably arranged on the torque setting element in an axially movable manner. An alternative arrangement of the coupling element can thus be made possible in a simple manner.
Das Koppelelement weist bevorzugt ein Führungselement auf, welches bei einer Drehung des Betätigungselements mit einer gehäusefesten Führungsbahn zusammenwirkt. Somit kann ein sicheres und unkompliziertes Koppeln und/oder Entkoppeln ermöglicht werden.The coupling element preferably has a guide element which, when the actuating element rotates, interacts with a guide track fixed to the housing. A secure and uncomplicated coupling and/or decoupling can thus be made possible.
Das Führungselement ist vorzugsweise in radialer Richtung der Moduseinstelleinrichtung ausgebildet. Somit kann eine robuste und zuverlässige Führung des Führungselements in der Führungsbahn ermöglicht werden.The guide element is preferably formed in the radial direction of the mode setting device. A robust and reliable guidance of the guide element in the guideway can thus be made possible.
Gemäß einer Ausführungsform ist die Führungsbahn in Umfangsrichtung an einer Innenfläche des Gehäuses ausgebildet. Somit kann eine kompakte und unkomplizierte Anordnung der Führungsbahn ermöglicht werden.According to one embodiment, the guide track is formed in the circumferential direction on an inner surface of the housing. A compact and uncomplicated arrangement of the guideway can thus be made possible.
Bevorzugt ist das Gangumschaltelement drehbar gelagert. Somit kann bei einer Koppelung eine Drehbewegung des Betätigungselements auf das Gangumschaltelement zur Gangumschaltung übertragen werden.The gear shifting element is preferably rotatably mounted. Thus, in the case of a coupling, a rotational movement of the actuating element can be transmitted to the gear shifting element for gear shifting.
Vorzugsweise ist eine Drehmomentbegrenzungseinrichtung vorgesehen, wobei das Drehmomenteinstellelement mit der Drehmomentbegrenzungseinrichtung zusammenwirkt. Somit kann auf einfache Art und Weise eine Aktivierung und/oder Deaktivierung der Drehmomentbegrenzungseinrichtung über die Moduseinstelleinrichtung ermöglicht werden.A torque limiting device is preferably provided, with the torque setting element interacting with the torque limiting device. Activation and/or deactivation of the torque limiting device via the mode setting device can thus be made possible in a simple manner.
Gemäß einer Ausführungsform ist ein Schlagwerk vorgesehen, wobei die Moduseinstelleinrichtung zum Aktivieren und/oder Deaktivieren des Schlagwerks ausgebildet ist. Somit kann eine sichere und unkomplizierte Aktivierung und/oder Deaktivierung des Schlagwerks ermöglicht werden.According to one embodiment, a hammer mechanism is provided, with the mode setting device being designed to activate and/or deactivate the hammer mechanism. A safe and uncomplicated activation and/or deactivation of the percussion mechanism can thus be made possible.
Das Getriebe ist bevorzugt nach Art eines Planetengetriebes mit einem über einen Schaltbügel verschiebbaren Schalthohlrad ausgebildet, wobei das Gangumschaltelement ein Beaufschlagungselement zum Beaufschlagen des Schaltbügels zumindest bei einer Gangumschaltung aufweist. Somit kann einfach und zuverlässig eine Gangumschaltung ermöglicht werden.The transmission is preferably designed in the manner of a planetary gear with a switching ring gear that can be displaced via a shift bracket, the gear shifting element having an actuating element for actuating the shift bracket at least during a gear change. A gear change can thus be made possible in a simple and reliable manner.
Dem Gangumschaltelement ist vorzugsweise ein Modusanzeigeelement zugeordnet, das bei einer Betriebsmoduseinstellung in Längsrichtung des Gehäuses bewegt wird und einen jeweils zugeordneten Betriebsmodus visualisiert. Somit kann einem Benutzer leicht und unkompliziert ein aktuell eingestellter Betriebsmodus verdeutlicht werden.The gear shifting element is preferably assigned a mode display element which, when the operating mode is set, in the longitudinal direction of the housing is moved and a respectively assigned operating mode is visualized. A currently set operating mode can thus be made clear to a user in a simple and uncomplicated manner.
Bevorzugt ist das Modusanzeigeelement als Beaufschlagungselement zum Beaufschlagen des Schaltbügels und/oder zur Modusanzeige ausgebildet. Somit kann auf einfache Art und Weise ein geeignetes Modusanzeigeelement bereitgestellt werden.The mode display element is preferably designed as an actuation element for actuation of the switch bracket and/or for mode display. A suitable mode display element can thus be provided in a simple manner.
Vorzugsweise weist das Gangumschaltelement einen Führungspin auf und das Modusanzeigeelement weist eine Führungsnut auf, wobei der Führungspin das Modusanzeigeelement bei einer Betriebsmoduseinstellung entlang der Führungsnut bewegt. Somit kann eine einfache und bauraumsparende Betriebsmodusanzeige bereitgestellt werden.Preferably, the gear shifting element has a guide pin and the mode indicator element has a guide groove, the guide pin moving the mode indicator element along the guide groove when an operating mode is set. A simple and space-saving operating mode display can thus be provided.
Die Erfindung ist anhand von in den Zeichnungen dargestellten Ausführungsbeispielen in der nachfolgenden Beschreibung näher erläutert. Es zeigen:
- Fig. 1
- eine Seitenansicht einer Handwerkzeugmaschine mit einer erfindungsgemäßen Moduseinstelleinrichtung,
- Fig. 2
- eine perspektivische Draufsicht auf die Moduseinstelleinrichtung von
Fig. 1 , der ein Drehmomenteinstellelement und ein Gangumschaltelement zugeordnet sind, bei einem geöffneten Gehäuse der Handwerkzeugmaschine vonFig. 1 , - Fig. 3
- eine perspektivische Ansicht der Moduseinstelleinrichtung von
Fig. 2 mit dem Drehmomenteinstellelement und dem Gangumschaltelement, sowie einem der Handwerkzeugmaschine vonFig. 1 zugeordneten Getriebe, - Fig. 4
- eine Seitenansicht einer der Handwerkzeugmaschine von
Fig. 1 bis Fig. 3 zugeordneten Gehäuseschale, - Fig. 5
- einen Längsschnitt durch die Moduseinstelleinrichtung von
Fig. 3 , - Fig. 6
- eine perspektivische Explosionsansicht der Moduseinstelleinrichtung von
Fig. 2 und Fig. 3 , des Getriebes vonFig. 3 , einer der Handwerkzeugmaschine zugeordneten Drehmomentbegrenzungseinheit und eines Schlagwerks, - Fig. 7
- eine perspektivische Teilansicht der Handwerkzeugmaschine von
Fig. 1 mit geöffnetem Gehäuse zur Verdeutlichung der Moduseinstelleinrichtung vonFig. 2 und Fig. 3 in einem ersten Betriebsmodus, - Fig. 8
- eine perspektivische Teilansicht der Handwerkzeugmaschine von
Fig. 1 mit geöffnetem Gehäuse zur Verdeutlichung der Moduseinstelleinrichtung vonFig. 2 und Fig. 3 in einem zweiten Betriebsmodus, - Fig. 9
- eine Draufsicht auf die Handwerkzeugmaschine von
Fig. 1 mit einem der Moduseinstelleinrichtung vonFig. 2 und Fig. 3 zugeordneten Modusanzeigeelement, - Fig. 10
- eine Draufsicht auf die Handwerkzeugmaschine von
Fig. 1 mit einem der Moduseinstelleinrichtung vonFig. 2 und Fig. 3 zugeordneten Modusanzeigeelement im ersten Betriebsmodus, - Fig. 11
- eine Draufsicht auf die Handwerkzeugmaschine von
Fig. 1 mit einem der Moduseinstelleinrichtung vonFig. 2 und Fig. 3 zugeordneten Modusanzeigeelement im zweiten Betriebsmodus, - Fig. 12
- eine perspektivische Explosionsansicht einer Moduseinstelleinrichtung gemäß einer weiteren Ausführungsform,
- Fig. 13
- eine Seitenansicht der Moduseinstelleinrichtung von
Fig. 12 im ersten Betriebsmodus, - Fig. 14
- eine Draufsicht auf die Moduseinstelleinrichtung von
Fig. 13 mit einem Modusanzeigeelement, - Fig. 15
- eine Draufsicht auf ein der Moduseinstelleinrichtung von
Fig. 12 bis Fig. 14 zugeordnetes Koppelelement, welches in einem Betätigungselement der Moduseinstelleinrichtung angeordnet ist, - Fig. 16
- eine perspektivische und teilweise geschnittene Ansicht des Betätigungselements mit dem Koppelement von
Fig. 15 , - Fig. 17
- eine perspektivische und teilweise geschnittene Ansicht der Moduseinstelleinrichtung von
Fig. 12 bis Fig. 14 im ersten Betriebsmodus, - Fig. 18
- einen Längsschnitt durch die Handwerkzeugmaschine von
Fig. 1 mit der Moduseinstelleinrichtung vonFig. 17 im ersten Betriebsmodus, - Fig. 19
- einen perspektivischen Längsschnitt durch die Moduseinstelleinrichtung von
Fig. 18 , - Fig. 20
- eine teilweise geschnittene und teilweise perspektivische Ansicht der Moduseinstelleinrichtung von
Fig. 18 undFig. 19 , - Fig. 21
- eine perspektivische und teilweise transparente Ansicht der Moduseinstelleinrichtung von
Fig. 18 bis Fig. 20 bei einer ersten Drehmomenteinstellung, - Fig. 22
- eine perspektivische und teilweise transparente Ansicht der Moduseinstelleinrichtung von
Fig. 18 bis Fig. 20 bei einer zweiten Drehmomenteinstellung, - Fig. 23
- eine perspektivische und teilweise transparente Ansicht der Moduseinstelleinrichtung von
Fig. 18 bis Fig. 20 bei einem Umschaltvorgang in eine dritte Drehmomenteinstellung, - Fig. 24
- eine perspektivische und teilweise transparente Ansicht der Moduseinstelleinrichtung von
Fig. 18 bis Fig. 20 bei einer dritten Drehmomenteinstellung, - Fig. 25
- einen Längsschnitt durch die Handwerkzeugmaschine von
Fig. 1 mit der Moduseinstelleinrichtung vonFig. 17 im zweiten Betriebsmodus, - Fig. 26
- eine teilweise geschnittene und teilweise perspektivische Ansicht der Moduseinstelleinrichtung von
Fig. 17 im zweiten Betriebsmodus, gesehen aus einem ersten Blickwinkel, - Fig. 27
- eine teilweise geschnittene und teilweise perspektivische Ansicht der Moduseinstelleinrichtung von
Fig. 17 im zweiten Betriebsmodus, gesehen aus einem zweiten Blickwinkel, - Fig. 28
- eine Vorderansicht der Moduseinstelleinrichtung von
Fig. 17 , gesehen in Richtung des Antriebsmotors, - Fig. 29
- eine teilweise transparente Seitenansicht der Moduseinstelleinrichtung und des Getriebes von
Fig. 17 im zweiten Betriebsmodus, - Fig. 30
- eine teilweise transparente Seitenansicht der Moduseinstelleinrichtung und des Getriebes von
Fig. 17 bei einem Umschaltvorgang in einen dritten Betriebsmodus, - Fig. 31
- eine teilweise transparente Seitenansicht der Moduseinstelleinrichtung und des Getriebes von
Fig. 17 im dritten Betriebsmodus, gesehen aus einem ersten Blickwinkel, - Fig. 32
- eine Draufsicht auf ein der Moduseinstelleinrichtung von
Fig. 17 zugeordnetes Modusanzeigeelement gemäß einer weiteren Ausführungsform, - Fig. 33
- eine teilweise transparente Seitenansicht der Moduseinstelleinrichtung und des Getriebes von
Fig. 17 im dritten Betriebsmodus, gesehen aus einem zweiten Blickwinkel, - Fig. 34
- einen Längsschnitt durch die Handwerkzeugmaschine von
Fig. 1 mit der Moduseinstelleinrichtung vonFig. 17 im dritten Betriebsmodus, - Fig. 35
- eine teilweise geschnittene und teilweise perspektivische Ansicht der Moduseinstelleinrichtung von
Fig. 17 im dritten Betriebsmodus, gesehen aus einem ersten Blickwinkel, - Fig. 36
- eine teilweise geschnittene und teilweise perspektivische Ansicht der Moduseinstelleinrichtung von
Fig. 17 im dritten Betriebsmodus, gesehen aus einem zweiten Blickwinkel, - Fig. 37
- eine Vorderansicht der Moduseinstelleinrichtung von
Fig. 35 und Fig. 36 im dritten Betriebsmodus, gesehen in Richtung des Antriebsmotors, - Fig. 38
- einen Längsschnitt durch die Handwerkzeugmaschine von
Fig. 1 mit der Moduseinstelleinrichtung vonFig. 17 in einem vierten Betriebsmodus, - Fig. 39
- eine teilweise geschnittene und teilweise perspektivische Ansicht der Moduseinstelleinrichtung von
Fig. 17 im vierten Betriebsmodus, gesehen aus einem ersten Blickwinkel, - Fig. 40
- eine teilweise geschnittene und teilweise perspektivische Ansicht der Moduseinstelleinrichtung von
Fig. 17 im vierten Betriebsmodus, gesehen aus einem zweiten Blickwinkel, und - Fig. 41
- eine Vorderansicht der Moduseinstelleinrichtung von
Fig. 39 und Fig. 40 im vierten Betriebsmodus, gesehen in Richtung des Antriebsmotors.
- 1
- a side view of a hand tool with a mode setting device according to the invention,
- 2
- a top perspective view of the mode setting device of FIG
1 , Which are associated with a torque setting element and a gear shifting element, with an open housing of the handheld power tool1 , - 3
- a perspective view of the mode setting device of FIG
2 with the torque setting element and the gear shifting element, as well as one of the hand tool from1 associated gearbox, - 4
- a side view of the hand tool from
Figures 1 to 3 associated housing shell, - figure 5
- a longitudinal section through the mode setting of
3 , - 6
- FIG. 14 is an exploded perspective view of the mode setting device of FIG
2 and 3 , the transmission of3 , a torque limitation unit assigned to the hand-held power tool and a percussion mechanism, - 7
- a perspective partial view of the hand tool from
1 with the case open to show the mode setting facility from2 and 3 in a first operating mode, - 8
- a perspective partial view of the hand tool from
1 with the case open to show the mode setting facility from2 and 3 in a second operating mode, - 9
- a plan view of the hand tool of
1 with one of the mode setting device of2 and 3 associated mode indicator, - 10
- a plan view of the hand tool of
1 with one of the mode setting device of2 and 3 associated mode display element in the first operating mode, - 11
- a plan view of the hand tool of
1 with one of the mode setting device of2 and 3 associated mode display element in the second operating mode, - 12
- an exploded perspective view of a mode setting device according to a further embodiment,
- 13
- a side view of the mode setting device of FIG
12 in the first operating mode, - 14
- a plan view of the mode setting device of FIG
13 with a mode indicator, - 15
- a top view of one of the mode setting device of FIG
12 to 14 associated coupling element, which is arranged in an actuating element of the mode setting device, - 16
- a perspective and partially sectioned view of the actuating element with the coupling element of
15 , - 17
- a perspective and partially sectioned view of the mode setting device of FIG
12 to 14 in the first operating mode, - 18
- a longitudinal section through the hand tool from
1 with the mode setting facility of17 in the first operating mode, - 19
- a perspective longitudinal section through the mode setting of
18 , - 20
- 12 is a partially sectioned and partially perspective view of the mode setting device of FIG
18 and19 , - 21
- a perspective and partially transparent view of the mode setting device of FIG
Figures 18 to 20 at a first torque setting, - 22
- a perspective and partially transparent view of the mode setting device of FIG
Figures 18 to 20 at a second torque setting, - 23
- a perspective and partially transparent view of the mode setting device of FIG
Figures 18 to 20 when switching to a third torque setting, - 24
- a perspective and partially transparent view of the mode setting device of FIG
Figures 18 to 20 at a third torque setting, - 25
- a longitudinal section through the hand tool from
1 with the mode setting facility of17 in the second operating mode, - 26
- 12 is a partially sectioned and partially perspective view of the mode setting device of FIG
17 in the second operating mode, seen from a first angle, - 27
- 12 is a partially sectioned and partially perspective view of the mode setting device of FIG
17 in the second operating mode, seen from a second angle, - 28
- a front view of the mode setting device of FIG
17 , seen in the direction of the drive motor, - 29
- 12 is a partially transparent side view of the mode selector and transmission of FIG
17 in the second operating mode, - 30
- 12 is a partially transparent side view of the mode selector and transmission of FIG
17 during a switching process to a third operating mode, - 31
- 12 is a partially transparent side view of the mode selector and transmission of FIG
17 in the third operating mode, seen from a first angle, - 32
- a top view of one of the mode setting device of FIG
17 associated mode display element according to a further embodiment, - Figure 33
- 12 is a partially transparent side view of the mode selector and transmission of FIG
17 in the third operating mode, seen from a second angle, - 34
- a longitudinal section through the hand tool from
1 with the mode setting facility of17 in the third operating mode, - Figure 35
- 12 is a partially sectioned and partially perspective view of the mode setting device of FIG
17 in the third operating mode, seen from a first angle, - Figure 36
- 12 is a partially sectioned and partially perspective view of the mode setting device of FIG
17 in the third operating mode, seen from a second angle, - 37
- a front view of the mode setting device of FIG
35 and 36 in the third operating mode, seen in the direction of the drive motor, - 38
- a longitudinal section through the hand tool from
1 with the mode setting facility of17 in a fourth operating mode, - Figure 39
- 12 is a partially sectioned and partially perspective view of the mode setting device of FIG
17 in the fourth operating mode, seen from a first angle, - figure 40
- 12 is a partially sectioned and partially perspective view of the mode setting device of FIG
17 in the fourth mode of operation seen from a second angle, and - Figure 41
- a front view of the mode setting device of FIG
39 and 40 in the fourth operating mode, seen in the direction of the drive motor.
Vorzugsweise weist das Gehäuse 110 einen Handgriff 126 mit einem Handschalter 117 auf. Der Antriebsmotor 120 ist z.B. über den Handschalter 117 betätigbar, d.h. ein- und ausschaltbar, und vorzugsweise derart elektronisch steuer- bzw. regelbar, dass sowohl ein Reversierbetrieb, als auch Vorgaben hinsichtlich einer gewünschten Drehgeschwindigkeit realisierbar sind. Darüber hinaus ist im Bereich des Handschalters 117 bevorzugt ein Drehrichtungsschalter 116 angeordnet, über den optional eine Drehrichtung des Antriebsmotors 120 bzw. einer dem Antriebsmotor 120 zugeordneten Abtriebswelle (205 in
Die Handwerkzeugmaschine 100 weist bevorzugt ein schaltbares Getriebe 150 auf, das mindestens zwischen einer ersten und zweiten Gangstufe umschaltbar ist. Bevorzugt ist das Getriebe 150 nach Art eines Planetengetriebes ausgebildet. Vorzugsweise ist die Handwerkzeugmaschine 100 nach Art eines Schlagbohr- oder Bohrschraubers ausgebildet, wobei die erste Gangstufe z.B. einem Schraubmodus und die zweite Gangstufe einem Bohr- und/oder Schlagbohrmodus entspricht. Gemäß einer Ausführungsform ist der Schraubmodus der ersten Gangstufe zugeordnet, und der Bohrmodus sowie der Schlagbohrmodus sind der zweiten Gangstufe zugeordnet.The hand-held
Zur Einstellung der verschiedenen Betriebsmodi dient bevorzugt eine Moduseinstelleinrichtung 160. Vorzugsweise ist ein Betriebsmodus durch eine Drehung in Umfangsrichtung der Moduseinstelleinrichtung 160 einstellbar. Insbesondere kann dabei eine Betriebsmoduseinstellung, eine Drehmomenteinstellung und/oder eine Gangumschaltung durch eine Drehung in Umfangsrichtung der Moduseinstelleinrichtung 160 erfolgen. Dabei ist der Moduseinstelleinrichtung 160 ein Modusanzeigeelement 170 zugeordnet, das zur Visualisierung eines eingestellten Betriebsmodus, Drehmoments und/oder einer Gangstufe ausgebildet ist. Illustrativ ist das Modusanzeigeelement 170 an einer Oberseite des Gehäuses 110 bzw. einer dem Handgriff 126 gegenüberliegenden Seite des Gehäuses 110 angeordnet. Jedoch könnte das Modusanzeigeelement 170 auch an einer beliebig anderen Stelle der Handwerkzeugmaschine 100 angeordnet sein.A
Zur Einstellung der verschiedenen Betriebsmodi ist der Moduseinstelleinrichtung 160 das Betätigungselement 240 zugeordnet. Vorzugsweise ist das Betätigungselement 240 drehbar mit der Moduseinstelleinrichtung 160 verbunden, sodass durch eine Drehung des Betätigungselements 240 in Umfangsrichtung 204 eine Betriebsmoduseinstellung, eine Drehmomenteinstellung und/oder eine Gangumschaltung erfolgt. Illustrativ und vorzugsweise ist das Drehmomenteinstellelement 220 drehfest mit dem Betätigungselement 240 verbunden.The
Das Drehmomenteinstellelement 220 weist bevorzugt einen ringförmigen Grundkörper 221 auf. An seiner dem Antriebsmotor 120 zugewandten Seite weist das Drehmomenteinstellelement 220 vorzugsweise ein Koppelelement 222 auf. Bevorzugt weist die Moduseinstelleinrichtung 160 das Koppelelement 222 auf, welches bewegbar an dem Drehmomenteinstellelement 220 angeordnet ist.The
Gemäß einer Ausführungsform ist das Koppelelement 222 bevorzugt schwenkbar am Drehmomenteinstellelement 220 angeordnet. Vorzugsweise ist das Koppelelement 222 als ein insbesondere elastischer Koppelarm 223 ausgebildet. Dabei ist das Koppelelement 222 in Richtung des Antriebsmotors bzw. zumindest in Längsrichtung 206 des Gehäuses 110 ausgebildet. Illustrativ und bevorzugt ist das Koppelelement 222 in der Längsrichtung 206 des Gehäuses 110 und in Umfangsrichtung 204 des Gehäuses 110 ausgebildet, wobei das Koppelelement 222 einen in Längsrichtung 206 ausgebildeten ersten Abschnitt 225 und einen in Umfangsrichtung 204 ausgebildeten zweiten Abschnitt 227 aufweist. Das Koppelelement 222, insbesondere der zweite Abschnitt 227, weist bevorzugt eine Koppelausnehmung 226 zum Koppeln mit dem Gangumschaltelement 230 auf. Hierbei greift die Koppelausnehmung 226 vorzugsweise beim Koppeln in einen Koppelvorsprung 236 des Gangumschaltelements 230 ein.According to one embodiment, the coupling element 222 is preferably arranged pivotably on the
Des Weiteren weist das Koppelelement 222, bevorzugt am zweiten Abschnitt 227, vorzugsweise ein Führungselement 224 auf. Bevorzugt ist das Führungselement 224 in radialer Richtung 202 der Moduseinstelleinrichtung 160 bzw. radial nach außen zum Gehäuse 110 hin ausgebildet. Dabei wirkt das Führungselement 224 vorzugsweise bei einer Drehung des Betätigungselements 240 mit einer gehäusefesten Führungsbahn 266 zusammen. Die Führungsbahn 266 ist dabei vorzugsweise in Umfangsrichtung 204 an einer Innenfläche 219 des Gehäuses 110 ausgebildet. Insbesondere ist die Führungsbahn 266 an einer Innenfläche 219 einer Gehäuseschale 111 ausgebildet. Bevorzugt ist die Führungsbahn 266 durch zumindest zwei gehäusefeste Gehäuserippen 260 ausgebildet. Vorzugsweise bilden ein gehäusefester Führungssteg 262 und ein Entkopplungssteg 264 die Führungsbahn 266 aus.Furthermore, the coupling element 222 preferably has a
Das Gangumschaltelement 230 weist vorzugsweise einen ringförmigen Grundkörper 231 auf und ist bevorzugt drehbar gelagert. Der Grundkörper 231 weist zumindest abschnittsweise einen abgestuften Bereich 238 auf, wobei der Koppelarm 223 des Drehmomenteinstellelements 220 im abgestuften Bereich 238 anordenbar ist. Darüber hinaus weist der Grundkörper 231 den Koppelvorsprung 236 auf, wobei die Koppelausnehmung 226 des Drehmomenteinstellelements 220 vorzugsweise beim Koppeln in den Koppelvorsprung 236 eingreift. Des Weiteren weist der Grundkörper 231 an seinem dem Drehmomenteinstellelement 220 zugewandten Ende zumindest einen in Längsrichtung 206 des Gehäuses 110 ausgebildeten Erweiterungsbereich 237 auf. Der Erweiterungsbereich 237 ist dabei bevorzugt als Deaktivierungselement für ein optionales Schlagwerk (510 in
Bevorzugt ist das Beaufschlagungselement 270 dazu ausgebildet, eine Gangumschaltung des beispielhaft als Planetengetriebe ausgebildeten Getriebes 150 zu bewirken. Das Planetengetriebe ist dabei mit einem über einen Schaltbügel 254 verschiebbaren Schalthohlrad (547 in
Darüber hinaus ist dem Gangumschaltelement 230 bevorzugt das Modusanzeigeelement 170 zugeordnet, das bei einer Betriebsmoduseinstellung in Längsrichtung 206 des Gehäuses 110 bewegt wird und einen jeweils zugeordneten Betriebsmodus visualisiert bzw. verdeutlicht. Dabei weist das Gehäuse 110, illustrativ die Gehäuseschale 111, eine Ausnehmung 212 zum Visualisieren des aktuellen Betriebsmodus auf. Das Modusanzeigeelement 170 weist zur Visualisierung des aktuellen Betriebsmodus einen Führungsbereich 172 mit einer Führungsausnehmung 174 auf. Dabei ist ein dem erweiterten Bereich 232 des Gangumschaltelements 230 zugeordneter Führungspin (332 in
Erfindungsgemäß sind das Drehmomenteinstellelement 220 und das Gangumschaltelement 230 bei einer Gangumschaltung lösbar miteinander gekoppelt. Des Weiteren sind das Drehmomenteinstellelement 220 und das Gangumschaltelement 230 bei einer Drehmomenteinstellung voneinander entkoppelt. Dabei koppelt bei einer Gangumschaltung vorzugsweise das Koppelelement 222 das Drehmomenteinstellelement 220 und das Gangumschaltelement 230 lösbar. Des Weiteren ist das Koppelelement 222 bevorzugt derart bewegbar an dem Drehmomenteinstellelement 220 angeordnet, dass bei einer Gangumschaltung das Drehmomenteinstellelement 220 mit dem Gangumschaltelement 230 gekoppelt wird und/oder vorzugsweise bei einer Drehmomenteinstellung das Drehmomenteinstellelement 220 von dem Gangumschaltelement 230 entkoppelt wird.According to the invention, the
Darüber hinaus zeigt
Bevorzugt weist das Planetengetriebe 150 ein axial verschiebbares Schaltelement 547 auf, das vorzugsweise als Schalthohlrad ausgebildet ist und nachfolgend als "Schalthohlrad 547" bezeichnet wird. Das Schalthohlrad 547 ist vorzugsweise zwischen mindestens zwei Axialpositionen verschiebbar, wobei jeweils eine Axialposition einer Gangstufe zugeordnet ist. Gemäß einer Ausführungsform ist das Schalthohlrad 547 als Hohlrad der zweiten Planetengetriebestufe ausgebildet, alternativ kann das Schalthohlrad 547 jedoch auch als zusätzliches Schalthohlrad des Planetengetriebes 150 ausgebildet sein. Da der prinzipielle Aufbau und die Funktionsweise von Planetengetrieben dem Fachmann jedoch hinreichend bekannt sind, wird hier zwecks Einfachheit der Beschreibung auf eine eingehende Beschreibung des Getriebes 150 verzichtet.The
Bei einer Gangumschaltung wird das Gangumschaltelement 230 bevorzugt verdreht, wodurch sich vorzugsweise der Führungspin 374 des Beaufschlagungselements 270 entlang der Kulissenbahn 234 bewegt. Dabei wird das Beaufschlagungselement 270 axial bewegt, wodurch der Schaltbügel 254 das Schalthohlrad 547 axial bewegt bzw. eine Gangumschaltung stattfindet.When changing gears, the gear-shifting
Darüber hinaus verdeutlicht
Bevorzugt ist das Gangumschaltelement 230 zumindest in einem Betriebsmodus mit einem Übertragungselement 529 gekoppelt, das an dem Getriebegehäuseteil 253 gelagert ist. In einer dem Schraubmodus zugeordneten Schraubposition ist das Übertragungselement 529 bevorzugt am Getriebegehäuseteil 253 axial verschiebbar gelagert und in dem Schlagbohr- und Bohrmodus zugeordneten Schlagbohr- und Bohrpositionen am Getriebegehäuseteil 253 axial fixiert.Gear shifting
Das Übertragungselement 529 ist gemäß einer Ausführungsform scheibenförmig nach Art eines Druckblechs bzw. einer Druckplatte ausgebildet und wird nachfolgend als "Druckplatte 529" bezeichnet. Dabei liegt die Druckplatte 529 vorzugsweise an ihrer der Abtriebswelle 205 zugewandten Seite am Getriebegehäuseteil 253 an. Bevorzugt ist die Druckplatte 253 drehfest mit dem Getriebegehäuseteil 253 verbunden.According to one embodiment, the
Darüber hinaus weist die Moduseinstelleinrichtung 160, insbesondere das Gangumschaltelement 230, bevorzugt zumindest ein Blockierelement 299 auf, über das die Druckplatte 529 im Schlagbohr- oder Bohrmodus in der zugeordneten Schlagbohr- oder Bohrposition am Getriebegehäuseteil 253 axial fixiert ist. Im Schraubmodus gibt das zumindest eine Blockierelement 299 vorzugsweise die Druckplatte 529 in axialer Richtung frei. Bevorzugt ist das zumindest eine Blockierelement 299 an einer dem Drehmomenteinstellelement 220 bzw. der Abtriebswelle 205 zugewandten Seite des Gangumschaltelements 230 angeordnet. Vorzugsweise ist das zumindest eine Blockierelement 299 einstückig mit dem Gangumschaltelement 230 ausgebildet.In addition, the
Gemäß einer Ausführungsform weist die Handwerkzeugmaschine 100 eine optionale Drehmomentbegrenzungseinheit 520 auf. Die optionale Drehmomentbegrenzungseinheit 520 ist vorzugsweise dem Drehmomenteinstellelement 220 zugeordnet. Bevorzugt ist die Drehmomentbegrenzungseinheit 520 im ersten Betriebsmodus, vorzugsweise dem Schraubmodus der Handwerkzeugmaschine 100, aktiviert, da im Schraubmodus das Übertragungselement 529 vorzugsweise freigegeben und somit axial bewegbar ist. Hierbei ist das Übertragungselement 529 bevorzugt mit der Drehmomentbegrenzungseinheit 520 gekoppelt. Bei einer Überschreitung des durch die Drehmomentbegrenzungseinheit 520, insbesondere das Drehmomenteinstellelement 220, eingestellten maximal übertragbaren Drehmoments bewegt sich das Übertragungselement 529 axial und entkoppelt das Getriebe 150 von der Abtriebswelle 205.According to one specific embodiment, hand-held
Vorzugsweise ist ein maximal übertragbares Drehmoment durch das Drehmomenteinstellelement 220 bzw. das Betätigungselement 240 einstellbar. Hierfür ist das Drehmomenteinstellelement 220 vorzugsweise drehfest mit dem Betätigungselement 240 verbunden. Des Weiteren ist das Drehmomenteinstellelement 220 vorzugsweise axial am Getriebegehäuseteil 253 lagefixiert. Darüber hinaus weist das Drehmomenteinstellelement 220 vorzugsweise zum Einstellen des maximal übertragbaren Drehmoments ein Innengewinde 524 auf, das in ein Außengewinde 522 eines Federhalters 526 greift. Der Federhalter 526 weist bevorzugt mindestens einen Halteabschnitt 597 auf, der vorzugsweise in Richtung des Getriebes 150 ausgebildet ist. Der mindestens eine Halteabschnitt 597 ist zur Anordnung von zumindest einem Federelement 527 ausgebildet. Das zumindest eine Federelement 527 ist zum Beaufschlagen des Übertragungselements 529 ausgebildet. Bevorzugt wird das zumindest eine Federelement 527 bei einem Überschreiten des eingestellten, maximal übertragbaren Drehmoments komprimiert, sodass sich das Übertragungselement 529 axial bewegen kann und bevorzugt das Getriebe 150 entkoppeln kann.A maximum transmittable torque can preferably be set by the
Der Federhalter 526 sitzt bevorzugt drehfest aber axial beweglich auf dem Getriebegehäuseteil 253. Dies erfolgt beispielhaft mithilfe von Schrauben, die ein Halteblech 599 mit dem Getriebegehäuseteil 253 verbinden. Das Halteblech 599 umgreift bevorzugt die Abtriebswelle 205 und beaufschlagt einen Rastfederhalter 532 gegen eine Ringschulter 535 im Drehmomenteinstellelement 220. Somit wird vorzugsweise auch das Drehmomenteinstellelement 220 am Getriebegehäuseteil 253 axial gesichert. Damit das Drehmomenteinstellelement 220 bei einer Verdrehung zur Einstellung eines maximal übertragbaren Drehmoments in diskreten Rastpositionen verrastet, ist es vorzugsweise von einem Rastfederelement 534 kraftbeaufschlagt. Das Rastfederelement 534 ist bevorzugt an dem Rastfederhalter 532 gehalten. Der Rastfederhalter 532 und das Rastfederelement 534 sind vorzugsweise in einem von dem Drehmomenteinstellelement 220 umgriffenen Innenraum angeordnet. Das Rastfederelement 534 rastet bevorzugt in diskreten Winkelpositionen ein, indem z.B. eine Rastkontur an einer der Abtriebswelle 205 zugewandten Innenseite des Drehmomenteinstellelements 220 von dem Rastfederelement 534 beaufschlagt wird.The
Durch eine axiale Stellbewegung wird die Abtriebswelle 205 bevorzugt zwischen einer Schlagbohrposition und einer Bohr- bzw. Schraubposition verstellt. In der Schlagbohrposition kann die Abtriebswelle 205 in
Darüber hinaus weist die Druckplatte 257 an ihrer Außenfläche bevorzugt nach radial außen ausgebildete Vorsprünge 581 auf, wobei zwischen zwei Vorsprüngen 581 ein Aufnahmebereich 584 ausgebildet ist. Wie oben beschrieben, weist das Gangumschaltelement 230 bevorzugt zumindest ein, illustrativ und vorzugsweise drei Blockierelemente 299 auf, wobei zwischen zwei Blockierelementen 299 jeweils eine Aufnahme 298 ausgebildet ist. Die Blockierelemente 299 fixieren vorzugsweise die Druckplatte 529 im Schlagbohr- oder Bohrmodus am Getriebegehäuseteil 253 axial, wobei jeweils ein Vorsprung 581 an einem Blockierelement 299 ansteht. Im Schraubmodus geben die Blockierelemente 299 vorzugsweise die Druckplatte 529 in axialer Richtung frei. Dabei sind die Vorsprünge 281 in den Aufnahmen 298 angeordnet und die Druckplatte 529 ist axial bewegbar, wodurch die Drehmomentbegrenzungseinheit 520 aktiviert ist.In addition, the
Des Weiteren verdeutlicht
Darüber hinaus verdeutlicht
Des Weiteren ist dem Drehmomenteinstellelement 721, analog zum Drehmomenteinstellelement 220 von
Gemäß der in
Vorzugsweise weist das Gangumschaltelement 730 einen ringförmigen Grundkörper 731 auf und ist bevorzugt drehbar gelagert. Der Grundkörper 731 weist zumindest abschnittsweise einen abgestuften Bereich 738 auf, wobei der Koppelring 722 im abgestuften Bereich 738 anordenbar ist. Darüber hinaus weist der Grundkörper 731 die Koppelausnehmung 736 auf. Bevorzugt ist die Koppelausnehmung 736 rechteckig ausgebildet, kann jedoch auch eine andere dem Koppelvorsprung 724 zugeordnete Form aufweisen. Des Weiteren weist der Grundkörper 731 an seinem dem Koppelring 720 zugewandten Ende zumindest einen, in Längsrichtung 206 des Gehäuses 110 ausgebildeten Bereich 737 auf. Der Bereich 737 ist vorzugsweise als Deaktivierungselement für das Schlagwerk 510 ausgebildet und wird nachfolgend als "Deaktivierungselement 739" bezeichnet. Darüber hinaus oder optional weist der Bereich 737 mindestens ein Blockierelement 795 auf, das dazu ausgebildet ist, im Schraubmodus die Druckplatte 529 in axialer Richtung freizugeben, wodurch vorzugsweise die Drehmomentbegrenzungseinheit 520 aktiviert wird. Darüber hinaus weist das Gangumschaltelement 730 bzw. der Grundkörper 731 an seinem dem Getriebe 150 zugewandten Ende einen in Längsrichtung 206 des Gehäuses 110 ausgebildeten, erweiterten Bereich 734 auf. Der erweiterte Bereich 734 weist einen Führungspin 732 auf. Das Modusanzeigeelement 770 weist vorzugsweise eine Führungsnut 912 auf, wobei der Führungspin 732 das Modusanzeigeelement 770 bei einer Betriebsmoduseinstellung entlang der Führungsnut 912 bewegt. Dabei wird bei einer Betriebsmoduseinstellung das Modusanzeigeelement 770 in Längsrichtung 206 des Gehäuses 110 bewegt und vorzugsweise ein jeweils zugeordneter Betriebsmodus visualisiert. Zur Visualisierung eines eingestellten Betriebsmodus weist das Modusanzeigeelement 770 beispielhaft das Bohrmaschinensymbol 612 von
Gemäß der Ausführungsform von
Vorzugsweise weist das Betätigungselement 740 an seiner dem Gangumschaltelement 730 zugewandten Seite 802 eine Aufnahme 810 zur Anordnung des Koppelrings 720 auf. Dabei weist das Betätigungselement 740 bzw. die Aufnahme 810 vorzugsweise zumindest einen, illustrativ vier Drehmitnahmestege 812 auf, die mit zugeordneten Drehaufnahmen 822 des Koppelrings 720 zusammenwirken. Die Drehaufnahmen 822 sind dabei an einem Außenumfang 820 des Koppelrings 720 ausgebildet. Bevorzugt weisen die Drehmitnahmestege 812 eine rechteckige Form aus, können jedoch auch eine beliebig andere, den Drehaufnahmen 822 zugeordnete Form aufweisen. Des Weiteren weist das Betätigungselement 740 bzw. die Aufnahme 810 zumindest ein, illustrativ drei Ausnehmungen 814 zur Anordnung eines nicht dargestellten Federelements auf. Das Federelement ist dabei dazu ausgebildet, den Koppelring 720 nach radial außen zu beaufschlagen bzw. die Drehmitnahmestege 812 in die Drehausnehmung 822 zu beaufschlagen. Hierbei sind vorzugsweise die Ausnehmungen 814 an einer dem Innenumfang des Betätigungselements 740 zugewandten Seite der Aufnahme 810 angeordnet und die Drehmitnahmestege 812 sind bevorzugt an einer dem Außenumfang des Betätigungselements 740 zugewandten Seite der Aufnahme 810 angeordnet.The
Es wird darauf hingewiesen, dass die beschriebenen Ausführungsformen auch miteinander kombiniert werden können. So kann z.B. das Gangumschaltelement 230 der ersten Ausführungsform ohne Kulissenbahn 234 ausgebildet sein und vorzugsweise die direkte Moduseinstelleinrichtung 700 der zweiten Ausführungsform aufweisen. Des Weiteren kann das Gangumschaltelement 730 der zweiten Ausführungsform eine Kulissenbahn 234 aufweisen und vorzugsweise die indirekte Moduseinstelleinrichtung 160 der ersten Ausführungsform aufweisen. Darüber hinaus können auch die Koppelemente 220 bzw. 720 in der jeweils anderen Ausführungsform Anwendung finden. So kann das Koppelement 220 bei der zweiten Ausführungsform bzw. mit dem Gangumschaltelement 730 mit der vorzugsweise direkten Moduseinstelleinrichtung 700 Anwendung finden und/oder das Koppelement 720 mit dem Gangumschaltelement 230 der ersten Ausführungsform verwendet werden. Des Weiteren kann das Drehmomenteinstellelement 220 auch bei der ersten Ausführungsform mit dem Betätigungselement 240 einstückig ausgebildet sein und/oder das Drehmomenteinstellelement 720 kann zweiteilig z.B. über eine Pressverbindung mit dem Betätigungselement 740 verbunden sein. Darüber hinaus kann die Führungsbahn 266 auch über eine Gehäuseschale in das Gehäuse 110 z.B. gepresst sein.It is pointed out that the described embodiments can also be combined with one another. For example, the gear-shifting
Claims (14)
- Hand-held power tool (100) having a housing (110) in which there are arranged a drive motor (120) and a transmission (150), able to be driven by the drive motor (120), for driving an output shaft (205), wherein provision is made of a mode-setting device (160) which has at least one rotatable actuating element (240) for operating-mode setting, one torque-setting element (220) for torque setting and one gear-shifting element (230) for gear shifting of the transmission (150), wherein the torque-setting element (220) and the gear-shifting element (230) are in a state releasably coupled to one another during a gear shift, characterized in that the mode-setting device (160) has a coupling element (222; 720) which is arranged in a movable manner on the torque-setting element (220) and which thus couples the latter to the gear-shifting element (230) during a gear shift.
- Hand-held power tool according to Claim 1, characterized in that the torque-setting element (220) and the gear-shifting element (230; 730) are in a state decoupled from one another during setting of a torque.
- Hand-held power tool according to Claim 1 or 2, characterized in that the coupling element (222) is arranged in a pivotable manner on the torque-setting element (220).
- Hand-held power tool according to Claim 1 or 2, characterized in that the coupling element (720) is arranged in an axially movable manner on the torque-setting element (220).
- Hand-held power tool according to one of Claims 1 to 4, characterized in that the coupling element (222; 720) has a guide element (224; 725) which, during a rotation of the actuating element (240), interacts with a guide path (266) which is fixed with respect to the housing.
- Hand-held power tool according to Claim 5, characterized in that the guide element (224) is formed in a radial direction (202) of the mode-setting device (160).
- Hand-held power tool according to Claim 5 or 6, characterized in that the guide path (266) is formed on an inner surface (219) of the housing (110) in a circumferential direction (204).
- Hand-held power tool according to one of the preceding claims, characterized in that the gear-shifting element (230; 730) is rotatably mounted.
- Hand-held power tool according to one of the preceding claims, characterized in that a torque-limiting device (520) is provided, wherein the torque-setting element (220) interacts with the torque-limiting device (520).
- Hand-held power tool according to one of the preceding claims, characterized in that an impact mechanism (510) is provided, wherein the mode-setting device (160) is configured for activating and/or deactivating the impact mechanism (510).
- Hand-held power tool according to one of the preceding claims, characterized in that the transmission (150) is designed in the manner of a planetary transmission with a shift ring gear (547) which is displaceable via a shift yoke (254), wherein the gear-shifting element (230) has a load-exerting element (270) for acting on the shift yoke (254), at least during a gear shift.
- Hand-held power tool according to one of the preceding claims, characterized in that the gear-shifting element (230) is assigned a mode-indicating element (170; 770) which, during setting of an operating mode, is moved in a longitudinal direction (206) of the housing (110) and visually indicates a respectively assigned operating mode.
- Hand-held power tool according to Claim 12 or according to Claim 11 and 12, characterized in that the mode-indicating element (170; 770) is configured as a load-exerting element (270; 779) for acting on the shift yoke (254) and/or for mode indication.
- Hand-held power tool according to Claim 12 or 13, characterized in that the gear-shifting element (230) has a guide pin (332; 732) and the mode-indicating element (170; 770) has a guide groove (912), wherein the guide pin (332; 732) moves the mode-indicating element (170; 770) along the guide groove (912) during setting of an operating mode.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102017222006.6A DE102017222006A1 (en) | 2017-12-06 | 2017-12-06 | Hand tool with a Moduseinstelleinrichtung |
PCT/EP2018/082473 WO2019110339A1 (en) | 2017-12-06 | 2018-11-26 | Hand-held power tool with a mode-setting device |
Publications (2)
Publication Number | Publication Date |
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EP3720659A1 EP3720659A1 (en) | 2020-10-14 |
EP3720659B1 true EP3720659B1 (en) | 2023-06-07 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18808336.4A Active EP3720659B1 (en) | 2017-12-06 | 2018-11-26 | Hand-held power tool with a mode-setting device |
Country Status (5)
Country | Link |
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US (1) | US11413737B2 (en) |
EP (1) | EP3720659B1 (en) |
CN (1) | CN111465472B (en) |
DE (1) | DE102017222006A1 (en) |
WO (1) | WO2019110339A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020210824A1 (en) | 2020-08-27 | 2022-03-03 | Robert Bosch Gesellschaft mit beschränkter Haftung | Hand tool with a switchable gear |
JP2022158636A (en) * | 2021-04-02 | 2022-10-17 | 株式会社マキタ | Electric power tool and impact tool |
SE546216C2 (en) * | 2021-12-17 | 2024-07-02 | Atlas Copco Ind Technique Ab | Power tool and load-responsive power transmission for a power tool |
DE102022210260A1 (en) * | 2022-09-28 | 2024-03-28 | Robert Bosch Gesellschaft mit beschränkter Haftung | Hand tool with a torque clutch |
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ES2308666T3 (en) * | 2006-05-19 | 2008-12-01 | BLACK & DECKER, INC. | WORKING MODE CHANGE MECHANISM FOR A MOTOR TOOL. |
DE102006037191A1 (en) * | 2006-08-09 | 2008-02-14 | Tts Tooltechnic Systems Ag & Co. Kg | Machine tool with multi-stage planetary gear |
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CN201664908U (en) * | 2007-06-15 | 2010-12-08 | 布莱克和戴克公司 | Mixed impact tool |
US7717191B2 (en) * | 2007-11-21 | 2010-05-18 | Black & Decker Inc. | Multi-mode hammer drill with shift lock |
US7717192B2 (en) * | 2007-11-21 | 2010-05-18 | Black & Decker Inc. | Multi-mode drill with mode collar |
CN201220406Y (en) * | 2008-02-03 | 2009-04-15 | 南京德朔实业有限公司 | Electric tool |
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DE102013222550A1 (en) * | 2013-11-06 | 2015-05-07 | Robert Bosch Gmbh | Hand tool |
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DE102015211700A1 (en) | 2015-06-24 | 2016-12-29 | Robert Bosch Gmbh | Hand tool |
DE102015226088A1 (en) * | 2015-12-18 | 2017-06-22 | Robert Bosch Gmbh | Hand tool machine with a gear shift unit |
DE102015226087A1 (en) * | 2015-12-18 | 2017-06-22 | Robert Bosch Gmbh | Hand tool with adjustable direction of rotation |
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DE102015226089A1 (en) * | 2015-12-18 | 2017-06-22 | Robert Bosch Gmbh | Hand tool machine with a gear shift unit |
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-
2017
- 2017-12-06 DE DE102017222006.6A patent/DE102017222006A1/en active Pending
-
2018
- 2018-11-26 CN CN201880078998.3A patent/CN111465472B/en active Active
- 2018-11-26 US US16/768,687 patent/US11413737B2/en active Active
- 2018-11-26 EP EP18808336.4A patent/EP3720659B1/en active Active
- 2018-11-26 WO PCT/EP2018/082473 patent/WO2019110339A1/en unknown
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US20210187719A1 (en) | 2021-06-24 |
CN111465472B (en) | 2023-12-22 |
WO2019110339A1 (en) | 2019-06-13 |
DE102017222006A1 (en) | 2019-06-06 |
US11413737B2 (en) | 2022-08-16 |
EP3720659A1 (en) | 2020-10-14 |
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