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EP2627483B1 - Hand-held electric tool having a spindle-locking device - Google Patents

Hand-held electric tool having a spindle-locking device Download PDF

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Publication number
EP2627483B1
EP2627483B1 EP11761624.3A EP11761624A EP2627483B1 EP 2627483 B1 EP2627483 B1 EP 2627483B1 EP 11761624 A EP11761624 A EP 11761624A EP 2627483 B1 EP2627483 B1 EP 2627483B1
Authority
EP
European Patent Office
Prior art keywords
spindle
electric tool
drive spindle
tool according
drive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP11761624.3A
Other languages
German (de)
French (fr)
Other versions
EP2627483A2 (en
Inventor
Joachim Hecht
Martin Kraus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to EP15159425.6A priority Critical patent/EP2913159B1/en
Publication of EP2627483A2 publication Critical patent/EP2627483A2/en
Application granted granted Critical
Publication of EP2627483B1 publication Critical patent/EP2627483B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • B25F5/02—Construction of casings, bodies or handles

Definitions

  • the present invention relates to a hand-held power tool according to the preamble of claim 1 with a tool housing in which a transmission for transmitting a torque generated by a drive motor is arranged on a drive spindle, which is associated with a Spindellockvorraum, wherein the drive spindle in the tool housing at least two Bearing points is rotatably mounted.
  • Such a power tool is for example from the DE 3234 254 A1 out.
  • Such hand-held power tools are known from the prior art, in which a drive spindle provided with a spindle locking device is mounted in a tool housing at two bearing points.
  • the spindle locking device is arranged either in one of the two bearings in the axial direction of the drive spindle downstream area or in a plane with a on or in the transmission, the first of the two bearings.
  • a disadvantage of the prior art is that power tools in which the spindle locking device is arranged in a region downstream of the two bearing points in the axial direction of the drive spindle, have a comparatively large length in the axial direction of the drive spindle.
  • the spindle locking device is arranged in a plane with a arranged on or in the transmission, the first bearing point, the drive spindle, however, a comparatively large Kippspiel on.
  • An object of the invention is therefore to provide a new hand-held power tool with a Spindellockvorraum that allows a shortened length of the power tool while reducing the tilting play of the drive spindle.
  • a hand-held power tool with a tool housing in which a gear for transmitting a torque generated by a drive motor is angeordriet on a drive spindle, which is associated with a Spindellockvorraum.
  • the drive spindle is rotatably mounted in the tool housing at least two bearing points.
  • the at least two bearing points are provided in the tool housing in a region downstream of the transmission.
  • the spindle locking device is arranged in the axial direction of the drive spindle between the two bearing points.
  • the invention thus enables the provision of a hand-held power tool, in which a shortening of the overall length in the axial direction of the drive spindle is made possible by an arrangement of the spindle locking device between the two bearing points.
  • the spindle locking device has a carrier element mounted on the drive spindle with a predetermined radial clearance, on which at least one spindle roller is arranged.
  • the at least one spindle roller preferably lies in the axial direction of the drive spindle directly between the two bearing points against the drive spindle.
  • the carrier element is mounted by a bearing ring formed on its outer circumference at a first of the at least two bearing points in a plain bearing.
  • the invention thus enables an effective and cost-effective storage of the carrier element in the power tool.
  • the slide bearing is preferably mounted in a blocking member which is designed to prevent slippage of the at least one spindle roller from the carrier element in the radial direction of the drive spindle.
  • the spindle rollers can be securely and reliably fixed in the support member.
  • the drive spindle is mounted on a first of the at least two bearing points in a rolling bearing.
  • the invention thus enables a stable and comparatively wear-free mounting of the drive spindle in the power tool.
  • the rolling bearing is preferably mounted in a blocking member which is designed to prevent slippage of the at least one spindle roller from the carrier element in the radial direction of the drive spindle.
  • the spindle rollers can be securely and reliably fixed in the support member.
  • the blocking member is preferably annular and rotatably connected to the tool housing.
  • the blocking member can be fixed in a simple manner in the tool housing.
  • the drive spindle is preferably mounted on a second of the at least two bearing points in a roller bearing, which is mounted in the tool housing.
  • the drive spindle can be stored stable and relatively wear-free in the power tool.
  • the carrier element is sleeve-shaped and surrounds the drive spindle at least in sections, wherein on the carrier element at least one recess for receiving the at least one spindle roller is formed.
  • the invention thus enables the provision of a simple and cost-effective support element, on which the spindle rollers can be stored safely and reliably.
  • the carrier element is preferably non-rotatably connected to a drive member of the transmission.
  • the transmission is designed as a planetary gear and the drive member is a planet carrier.
  • the invention thus enables the provision of a safe and reliable transmission.
  • the drive spindle is preferably drivable directly from the drive member, wherein between the drive member and the drive spindle, a predetermined radial clearance is formed.
  • the drive spindle can be driven in a simple manner.
  • the drive spindle can be driven directly by the carrier element.
  • the invention thus enables an improvement of the interaction of carrier element, drive spindle and drive member.
  • a raceway is rotatably mounted on the drive spindle in the region of a first of the at least two bearing points, which is mounted in an associated sliding bearing.
  • a braking device is preferably provided on the drive spindle, which is designed to prevent chattering during operation of the power tool during an outflow of the drive spindle.
  • the brake device preferably has an O-ring for realizing a braking function.
  • annular groove is preferably formed in the region of the spindle locking device, in which the O-ring is arranged.
  • the braking device is arranged in the region of the carrier element.
  • the invention thus enables the provision of a hand-held power tool with a simple and stable Spindellockvorraum.
  • At least one spindle roller is arranged on the carrier element.
  • the invention thus enables the provision of a spindle locking device in which a stable and reliable mounting of the spindle rollers on the drive spindle can be made possible.
  • Fig. 1 shows a hand-held power tool 100 having a tool housing 105 with a handle 115.
  • the power tool 100 for mains-independent power supply is mechanically and electrically connectable to a battery pack 190.
  • the power tool 100 is exemplified as a cordless drill driver. It should be noted, however, that the present invention is not limited to cordless drill, but can be found in different, especially battery-powered power tools application in which a tool is rotated, for. B. in a cordless screwdriver, a cordless hammer drill, etc.
  • one of the battery pack 190 supplied with power, electric drive motor 180 and a transmission 170 are arranged.
  • the drive motor 180 is connected via the gear 170 with a drive shaft 120, z. B. a drive spindle connected.
  • the drive motor 180 is illustratively disposed in a motor housing 185 and the transmission 170 is disposed in a transmission housing 110, with the transmission housing 110 and the motor housing 185 being arranged in the housing 105 by way of example.
  • the transmission 170 is designed to transmit a torque generated by the drive motor 180 to the drive spindle 120 and, according to one embodiment, a planetary gear formed with different gear or planetary stages, which is rotationally driven by the drive motor 180 during operation of the power tool 100.
  • the planetary gear 170 will be described below with respect to a in Fig. 2 enlarged illustrated sectional view of a section 200 described.
  • the drive motor 180 is z. B. via a manual switch 195 actuated, that is switched on and off, and may be any type of engine, for. As an electronically commutated motor or a DC motor.
  • the drive motor 180 can be electronically controlled or regulated in such a way that both a reversing operation and specifications with respect to a desired rotational speed can be realized.
  • the mode of operation and the construction of a suitable drive motor are sufficiently known from the prior art, so that a detailed description of the description is omitted here for the sake of brevity.
  • the drive spindle 120 is rotatably supported by a bearing assembly 130 in the housing 105 and provided with a tool holder 140, which is arranged in the region of an end face 112 of the housing 105 and exemplarily has a drill chuck 145.
  • the bearing arrangement 130 has at least two bearing points 132, 134 which are provided in the tool housing 105 in a region 299 located downstream of the gearbox 170.
  • At the bearings 132, 134 are associated bearings (eg 232, 234 in Fig. 2 ), which serve as spindle bearings and in which the drive spindle 120 is mounted.
  • the tool holder 140 serves to receive a tool 150 and may be formed on the drive spindle 120 or be connected in a tower-shaped manner with this.
  • Fig. 1 is the tool holder 140 exemplified tower-like and attached to a provided on the drive spindle 120 mounting device 122 thereto.
  • the drive spindle 120 is associated with a spindle locking device 250.
  • This is arranged in the axial direction of the drive spindle 120 between the two bearing points 132, 134, preferably directly, and serves to center the drive spindle 120 when the drive motor 180 is turned off.
  • the operation of spindle locking devices is sufficiently known from the prior art, so that here for the sake of scarcity of Description will be omitted to a detailed description of the operation of the Spindellockvorraum 250.
  • Fig. 2 shows the cutout 200 of the hand-held power tool 100 of Fig. 1 in which for the sake of clarity and simplicity of the drawing to a representation of the tool 150 and the tool holder 140 of Fig. 1 was waived.
  • the cutout 200 illustrates an exemplary embodiment of the planetary gear 170, the drive spindle 120, the bearing assembly 130, as well as the Spindellockvorides 250 according to a first embodiment.
  • the planetary gear 170 has, by way of example, three gear or planetary stages: a front stage 270, a middle stage 271 and a rear stage 272.
  • the front planetary stage 270 has for example a sun gear 203 with a toothing 269, at least one planetary gear 205 with a toothing 263 , a planet carrier 204 with a rotational drive contour 267, and a ring gear 206th
  • the torque of the drive motor 180 of Fig. 1 is transmitted via the planetary stages 272, 271, 270 by means of the rotary driving contour 267 of the planet carrier 204 to the drive spindle 120.
  • the planet carrier 204 serves as a drive member to drive the drive spindle 120 rotationally. Since the structure of a planetary gear is well known to those skilled in the art, a further description of the planetary stages 271, 272 is omitted here for the sake of brevity.
  • the planetary stages 270, 271, 272 are illustratively arranged in the transmission housing 110, which is designed as an example in three parts and has a front part 210, a middle part 212 and a rear part 214.
  • the front part 210 illustratively has an external thread 282 on which by way of example an adjusting ring 295 is rotatably mounted.
  • an annular shoulder 201 is exemplified on the inner periphery of the front part 210.
  • the drive spindle 120 has the illustrative formed as an external thread fastening device 122 on which the chuck 145 of the tool holder 140 of Fig. 1 is fastened, wherein the external thread 122 z. B. can be brought into threaded engagement with a provided on the drill chuck 145 internal thread.
  • a support flange 255 is provided on the drive spindle 120 by way of example.
  • the bearing assembly 130 illustratively includes a plain bearing 232, e.g. B. a sintered bearing, and a rolling bearing 234, z. B. a ball bearing on.
  • the sintered bearing 232 is arranged by way of example at the bearing point 132, which is also referred to below as the first bearing point, and which points in the direction of the tool holder 140 of FIG Fig. 1 seen the planet carrier 204 and thus the transmission 170 is preferably immediately downstream.
  • the ball bearing 234 is arranged by way of example at the bearing point 134, which is also referred to below as the second bearing point, and which points in the direction of the tool holder 140 of FIG Fig. 1 Seen from the planet carrier 204 and thus spaced from the gear 170, and is supported on the support flange 255 from.
  • the spindle locking device 250 has a carrier element 252 mounted on the drive spindle 120 with a predetermined radial clearance, on which at least one spindle roller 254 is arranged. This is seen in the axial direction of the drive spindle 120 between the two Bearings 132, 134 against the drive spindle 120, preferably directly between the sintered bearing 232 and the ball bearing 234. Alternatively, the spindle roller 254 z. B. abut against an inner ring of the ball bearing 234.
  • the sintered bearing 232 and the at least one spindle roller 254 are mounted in a blocking member 256, which is also associated with the spindle locking device 250 and designed to prevent slippage of the at least one spindle roller 254 from the carrier element 252 in the radial direction of the drive spindle 120.
  • the blocking member 256 is z. B. annular and at least indirectly rotatably connected to the tool housing 105.
  • the blocking member 256 is pressed against rotation in the front part 210 of the gear housing 110, wherein both in the axial and in the radial direction within predetermined tolerances, a corresponding clearance may be present.
  • the blocking member 256 may be connected to the transmission housing 110 without play.
  • the blocking member 256 formed integrally with the gear housing 110 or z. B. be molded by plastic injection to this.
  • Fig. 3 shows the planet carrier 204, the sintered bearing 232, the blocking member 256, the support member 252, the spindle roller 254, the ball bearing 234 and the drive spindle 120 of Fig. 2 ,
  • the blocking member 256, the support member 252 and the spindle roller 254 form the spindle lock device 250 connected to the drive spindle 120 of FIG Fig. 2 out.
  • the drive spindle 120 on a side of the support flange 255 facing away from the external thread 122, has an annular bearing structure 378, which illustratively terminates with an annular shoulder 388. Starting from the annular shoulder 388 in the direction of the axial end of the drive spindle 120 opposite the external thread 122, this has one or more flattened side surfaces 364, which in number preferably correspond to the number of spindle rollers 254. In addition, on the external thread 122 opposite axial end of the drive spindle 120 groove-like recesses 382, 384 are formed.
  • the support member 252 is illustratively sleeve-shaped and has on its outer circumference a bearing ring 340, which preferably integrally with the Carrier element 252 is formed or at least formed on this.
  • a bearing ring 340 which preferably integrally with the Carrier element 252 is formed or at least formed on this.
  • axial extensions 322, 324, 326 are provided, which also extend radially outwardly over an outer circumference formed by the bearing ring.
  • bolt-like holding members 312, 314, 316 are provided for fixing the carrier element 252 to the planet carrier 204.
  • the axial and radial extensions 322, 324, 326 form recesses 352, 354, 356 for receiving associated spindle rollers.
  • the spindle roller 254 is provided for receiving in the recess 354. It should be noted, however, that any number of recesses may be provided to accommodate any number of spindle rolls.
  • the blocking member 256 illustratively has a plurality of radially outwardly directed projections 302, 304, 306, 308. These serve for the rotationally fixed fixing of the blocking member 256 in the front part 210 of the gear housing 110 of Fig. 2 as below Fig. 6 described.
  • the planet carrier 204 has, for example, a holding and driving device 450 formed on an approximately central opening. This realized by way of example the rotational engagement contour 267 of Fig. 2 and will be down below Fig. 4 described in detail.
  • the blocking member 256 is pushed from the external thread 122 opposite the axial end of the drive spindle 120 in the axial direction on this and pressed into the front part 210, via its radial projections 302, 304, 306, 308 a rotationally fixed connection with the front part 210th is produced.
  • the carrier element 252 with the arranged in its recesses 352, 354, 356 spindle rollers 254 on the drive spindle 120 and thus inserted into the blocking member 256, so that the support member 252 surrounds the drive spindle 120 at least partially and the spindle roller 254 against the ball bearing 234 facing away from the annular shoulder 201 of Fig. 2 is applied.
  • a radial clearance possible between spindle 120 and carrier element 252 is preferably very small.
  • the connection between the spindle 120 and the carrier element 252 is free of play.
  • the spindle roller 254 abuts against the flattened side surface 364 of the drive spindle 120.
  • the sintered bearing 232 is pushed onto the bearing ring 340 of the carrier element 252 and its bolt-like holding members 312, 314, 316 and the drive spindle 120 are anchored in the holding and driving device 450 of the planet carrier 204 such that at least the drive spindle 120 via a radial clearance-prone positive connection is mounted on the planet carrier 204.
  • the spindle roller 254 is preferably arranged directly between the sintered bearing 232 and the ball bearing 234 as described above.
  • Fig. 4 shows the planet carrier 204, the sintered bearing 232, the blocking member 256, the support member 252, the spindle roller 254, the ball bearing 234 and the drive spindle 120 of Fig. 3 ,
  • Fig. 4 For example, an exemplary second flattened side surface 462 on the drive spindle 120 and another radial projection 402 on the blocking member 256 are illustrated.
  • the holding and driving device 450 of the planet carrier 204 has retaining grooves 412, 414, 416 and driving webs 482, 484, 486.
  • the retaining grooves 412, 414, 416 are used in the in Fig. 3 described assembly for preferably play-free recording of the bolt-like holding members 312, 314 and 316 of the support member 252.
  • the driving webs 482, 484, 486 are adapted to the in Fig. 3 assembly described in the groove-like recesses 382, 384 of the drive spindle 120 with a predetermined within appropriate tolerances, radial play, thus a rotating Drive the drive spindle 120 to allow directly through the planet carrier 204.
  • the carrier element 252 can exert a bearing function to the blocking member 256 at the first bearing 132, so that the sintered bearing 232 can be dispensed with.
  • the carrier element 252 may be made shorter than shown, so that the sintered bearing 232 can be pressed directly into the front part 210 of the transmission housing 110.
  • the blocking member 256 in the front part 210 z. B.
  • the planet carrier 204 and the support member 252 may be made in one piece or the support member 252 may be integrally formed on the planet carrier 204 or z. B. by welding or gluing to this be attached, as exemplified in Fig. 15 shown.
  • Fig. 5 shows the arrangement of Fig. 3 and 4 after the at Fig. 3 described assembly.
  • the drive spindle 120 illustratively in the region of the support member 252 has an annular groove 510, in the z. B. an O-ring 520 is arranged. This realizes a braking function between the carrier element 252 and the drive spindle 120, in order thus during operation of the power tool 100 of Fig. 1 to prevent rattling at an outlet of the drive spindle 120.
  • Fig. 6 shows the planet carrier 204, the sintered bearing 232, the ball bearing 234 of Fig. 2 to 4 and a drive spindle 620, as well as the blocking member 256 of FIG Fig. 2 to 4 , a support member 650, a race 632 and the spindle roller 254 of FIG Fig. 2 to 4 , which form a spindle locking device 610 according to another embodiment and in the front part 210 of Fig. 2 are arranged.
  • the support element 650 illustratively has an annular collar 664 on which in a axial direction a bolt-like retaining member 616 and in the opposite axial direction at least one recess 652 for receiving the spindle roller 254 and an axial extension 662 are formed.
  • the drive spindle 620 is compared to the drive spindle 120 of Fig. 2 to 5 shortened and has at least one flattened side surface 654, which merges in a direction away from the support flange 255 axial direction in a groove-like recess 622. This serves to receive the bolt-like holding member 616 of the carrier element 650. In the area of this bolt-like holding member 616, a race 632 is arranged on the drive spindle 620, preferably pressed on. This is stored in the sintered bearing 232.
  • Fig. 7 shows the arrangement of Fig. 6 without the front part 210 before a corresponding mounting, similar to the above at Fig. 3 described.
  • the bolt-like holding member 616 and two further bolt-like holding members 712, 714, and the axial extension 662 and two further axial extensions 764, 766 are formed on the annular collar 664 of the support member 650, the recess 652 and two further recesses for receiving the Form spindle roller 254 and two other spindle rollers.
  • the drive spindle 620 illustratively has a spindle body 790 facing away from the support flange 255, on which an annular bearing structure 378 for supporting the ball bearing 234 is provided, which illustratively ends with an annular shoulder 788.
  • two side surfaces 782, 784 of arcuate cross-section connect to the annular shoulder 788, which at another shoulder 786 illustratively transition into at least one, preferably three, webs, of which FIG Fig. 7 two webs 794, 796 are visible.
  • the planet carrier 204 points in Fig. 7 a holding and entraining device 720 are provided on the preferably play-free recording of the bolt-like holding members 616, 712, 714 of the support member 650 retaining grooves. These essentially correspond to the retaining grooves 412, 414, 416 of FIG Fig. 4 and are for the sake of simplicity and clarity of the drawing in Fig. 7 not marked.
  • the holding and driving device has 720 driving grooves 724, 726, 728 for receiving the webs 794, 796 of the drive spindle 620, so that they can be mounted on the planet carrier 204 via a radial play-affected form fit.
  • Fig. 8 shows the arrangement of Fig. 7 after an assembly, in which instead of the raceway 632 and the sintered bearing 232, a rolling bearing 832, such as a ball bearing, application applies.
  • a rolling bearing 832 such as a ball bearing
  • This is like the race 632 of Fig. 6 pressed onto the drive spindle 620 and the carrier element 650.
  • the ball bearing 832 is pressed into the blocking member 256.
  • Fig. 9 shows the arrangement of Fig. 8 before assembly.
  • Fig. 9 illustrates the use of the ball bearing 832 instead of the race 632 and the sintered bearing 232 of Fig. 6 and 7 ,
  • Figure 10 shows the drive spindle 620 of Fig. 6 to 9 , In Fig. 10 a further web 1094 and a further recess 1022 are visible.
  • Fig. 11 shows a rear view of the arrangement of Fig. 8 with the mounted on the planet carrier 204 at least substantially backlash-free support member 650 and also mounted on the planet carrier 204 drive spindle 620. This is as described above via a radially play-form fit on the planet carrier 204 mounted so that between the webs 794, 796, 1094 of the drive spindle 620 and the driving grooves 724, 728 and 726, respectively, a given within suitable tolerances game 1120 is formed, the sake of simplicity and clarity of illustration in Fig. 11 only once is marked.
  • the drive of the drive spindle 620 according to the in Fig. 2 to 11 shown embodiments by acting as a drive member planet carrier 204. Although this can rotate relative to the drive spindle 620, but preferably not relative to the support member 650.
  • Fig. 12 shows the planet carrier 204, the ball bearings 832, 234 of Fig. 8 and a drive spindle 1220, and a blocking member 1256, a support member 1252 and the spindle roller 254 of Fig. 2 to 11 in the front part 210 of Fig. 2 are arranged and form a spindle locking device 1210 according to another embodiment, in which the support member 1252 serves as a drive member, as below Fig. 13 described.
  • the blocking member 1256 is compared to the blocking member 256 of Fig. 2 to 11 Preferably designed shortened such that this substantially encompasses only a portion of the support member 1252 and the drive spindle 1220, in which the at least one spindle roller 254 is arranged.
  • the drive spindle 1220 has compared to the drive spindle 620 of Fig. 6 to 11 an annular shoulder 1222, at which the drive spindle 1220 tapers from the at least one flattened side surface 654 in an axial direction away from the support flange 255 into an axial end region 1242 on which at least one catch groove 1278 is formed. This serves to receive an associated, provided on the illustratively sleeve-shaped support member 1252, radially inwardly directed driving bar 1292, as below Fig. 13 described.
  • On the support member 1252 is illustratively the bearing ring 340 of Fig. 3 intended. On this is in the front part 210 z. B. pressed or injected by plastic injection ball bearing 832 pressed.
  • Fig. 13 shows the arrangement of Fig. 12 without the front part 210.
  • Fig. 13 illustrates a plurality of radial projections 1302, 1304, 1306, 1308, which are provided on the blocking member 1256 by way of example.
  • an axial end region 1242 of the drive spindle 1220 is arranged in the carrier element 1252 in order to form a radially play-connected positive connection between the drive spindle 1220 and the carrier element 1252.
  • the radially inwardly directed carrier web 1292 and two further radially inwardly directed driving webs 1364, 1366 of the carrier element 1252 engage the receiving groove 1278 or two further driving grooves 1354, 1356 of the drive spindle 1220 with a radial clearance predetermined within suitable tolerances.
  • carrier element 1252 driven by planet carrier 204 serves as a drive member and directly drives drive spindle 1220.
  • drive spindle 1220 engage on the support member 1252 exemplarily formed, radially outwardly directed driving webs 1392, 1394, 1396 in associated driving grooves 1374, 1378 and 1376, which are assigned to a planet carrier 204 formed holding and driving device 1305.
  • Fig. 14 shows the arrangement of Fig. 13 before an appropriate installation.
  • Fig. 14 illustrates an exemplary embodiment of the support member 1252.
  • Fig. 15 shows the arrangement of Fig. 2 according to an embodiment in which the planet carrier 204 and the carrier element 252 of Fig. 2 example, are integrally formed and form an illustrative drive member 1550.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Turning (AREA)
  • Retarders (AREA)
  • Mounting Of Bearings Or Others (AREA)
  • Portable Power Tools In General (AREA)

Description

Stand der TechnikState of the art

Die vorliegende Erfindung betrifft ein handgeführtes Elektrowerkzeug gemäß dem Oberbegriff des Patentanspruchs 1 mit einem Werkzeuggehäuse, in dem ein Getriebe zur Übertragung eines von einem Antriebsmotor erzeugten Drehmoments auf eine Antriebsspindel angeordnet ist, der eine Spindellockvorrichtung zugeordnet ist, wobei die Antriebsspindel in dem Werkzeuggehäuse an mindestens zwei Lagerstellen drehbar gelagert ist.The present invention relates to a hand-held power tool according to the preamble of claim 1 with a tool housing in which a transmission for transmitting a torque generated by a drive motor is arranged on a drive spindle, which is associated with a Spindellockvorrichtung, wherein the drive spindle in the tool housing at least two Bearing points is rotatably mounted.

Ein solches Elektrowerkzeug geht beispielsweise aus der DE 3234 254 A1 hervor.Such a power tool is for example from the DE 3234 254 A1 out.

Aus dem Stand der Technik sind derartige handgeführte Elektrowerkzeuge bekannt, bei denen eine mit einer Spindellockvorrichtung versehene Antriebsspindel in einem Werkzeuggehäuse an zwei Lagerstellen gelagert ist. Hierbei ist die Spindellockvorrichtung entweder in einem den beiden Lagerstellen in axialer Richtung der Antriebsspindel nachgelagerten Bereich oder in einer Ebene mit einer am bzw. im Getriebe angeordneten, ersten der beiden Lagerstellen angeordnet.Such hand-held power tools are known from the prior art, in which a drive spindle provided with a spindle locking device is mounted in a tool housing at two bearing points. Here, the spindle locking device is arranged either in one of the two bearings in the axial direction of the drive spindle downstream area or in a plane with a on or in the transmission, the first of the two bearings.

Nachteilig am Stand der Technik ist, dass Elektrowerkzeuge, bei denen die Spindellockvorrichtung in einem den beiden Lagerstellen in axialer Richtung der Antriebsspindel nachgelagerten Bereich angeordnet ist, eine vergleichsweise große Baulänge in axialer Richtung der Antriebsspindel aufweisen. Bei Elektrowerkzeugen, bei denen die Spindellockvorrichtung in einer Ebene mit einer am bzw. im Getriebe angeordneten, ersten Lagerstelle angeordnet ist, weist die Antriebsspindel dahingegen ein vergleichsweise großes Kippspiel auf.A disadvantage of the prior art is that power tools in which the spindle locking device is arranged in a region downstream of the two bearing points in the axial direction of the drive spindle, have a comparatively large length in the axial direction of the drive spindle. In power tools, in which the spindle locking device is arranged in a plane with a arranged on or in the transmission, the first bearing point, the drive spindle, however, a comparatively large Kippspiel on.

Offenbarung der ErfindungDisclosure of the invention

Eine Aufgabe der Erfindung ist es daher, ein neues handgeführtes Elektrowerkzeug mit einer Spindellockvorrichtung bereit zu stellen, die eine verkürzte Baulänge des Elektrowerkzeugs bei einer gleichzeitigen Reduzierung des Kippspiels von dessen Antriebsspindel ermöglicht. Darüber hinaus ist es eine Aufgabe der Erfindung, ein neues handgeführtes Elektrowerkzeug mit einer Antriebsspindel sowie einer Spindellockvorrichtung bereit zu stellen, bei dessen Betrieb eine bei einem Auslauf der Antriebsspindel auftretende, ungewünschte Geräuschentwicklung zumindest reduziert werden kann.An object of the invention is therefore to provide a new hand-held power tool with a Spindellockvorrichtung that allows a shortened length of the power tool while reducing the tilting play of the drive spindle. In addition, it is an object of the invention to provide a new hand-held power tool with a drive spindle and a Spindellockvorrichtung, in whose operation occurring at a spout of the drive spindle, undesirable noise can be at least reduced.

Dieses Problem wird gelöst durch ein handgeführtes Elektrowerkzeug gemäß dem Patentanspruch 1 mit einem Werkzeuggehäuse, in dem ein Getriebe zur Übertragung eines von einem Antriebsmotor erzeugten Drehmoments auf eine Antriebsspindel angeordriet ist, der eine Spindellockvorrichtung zugeordnet ist. Die Antriebsspindel ist in dem Werkzeuggehäuse an mindestens zwei Lagerstellen drehbar gelagert. Die mindestens zwei Lagerstellen sind in dem Werkzeuggehäuse in einem dem Getriebe nachgelagerten Bereich vorgesehen. Die Spindellockvorrichtung ist in axialer Richtung der Antriebsspindel zwischen den zwei Lagerstellen angeordnet.This problem is solved by a hand-held power tool according to claim 1 with a tool housing in which a gear for transmitting a torque generated by a drive motor is angeordriet on a drive spindle, which is associated with a Spindellockvorrichtung. The drive spindle is rotatably mounted in the tool housing at least two bearing points. The at least two bearing points are provided in the tool housing in a region downstream of the transmission. The spindle locking device is arranged in the axial direction of the drive spindle between the two bearing points.

Die Erfindung ermöglicht somit die Bereitstellung eines handgeführten Elektrowerkzeugs, bei dem durch eine Anordnung der Spindellockvorrichtung zwischen den zwei Lagerstellen eine Verkürzung der Baulänge in axialer Richtung der Antriebsspindel ermöglicht wird.The invention thus enables the provision of a hand-held power tool, in which a shortening of the overall length in the axial direction of the drive spindle is made possible by an arrangement of the spindle locking device between the two bearing points.

Gemäß der Erfindung weist die Spindellockvorrichtung ein auf der Antriebsspindel mit einem vorgegebenen radialen Spiel gelagertes Trägerelement auf, an dem mindestens eine Spindelwalze angeordnet ist.According to the invention, the spindle locking device has a carrier element mounted on the drive spindle with a predetermined radial clearance, on which at least one spindle roller is arranged.

Somit kann eine stabile und zuverlässige Lagerung der Spindelwalzen an der Antriebsspindel ermöglicht werden.Thus, a stable and reliable storage of the spindle rollers can be made possible on the drive spindle.

Die mindestens eine Spindelwalze liegt in axialer Richtung der Antriebsspindel bevorzugt unmittelbar zwischen den zwei Lagerstellen gegen die Antriebsspindel an.The at least one spindle roller preferably lies in the axial direction of the drive spindle directly between the two bearing points against the drive spindle.

Somit kann auf einfache Art und Weise eine Reduzierung des Kippspiels der Antriebsspindel erreicht werden.Thus, a reduction of the tilting clearance of the drive spindle can be achieved in a simple manner.

Gemäß einer Ausführungsform ist das Trägerelement durch einen an seinem Außenumfang ausgebildeten Lagerring an einer ersten der mindestens zwei Lagerstellen in einem Gleitlager gelagert.According to one embodiment, the carrier element is mounted by a bearing ring formed on its outer circumference at a first of the at least two bearing points in a plain bearing.

Die Erfindung ermöglicht somit eine effektive und kostengünstige Lagerung des Trägerelements in dem Elektrowerkzeug.The invention thus enables an effective and cost-effective storage of the carrier element in the power tool.

Das Gleitlager ist bevorzugt in einem Blockierglied gelagert, das dazu ausgebildet ist, ein Ausrutschen der mindestens einen Spindelwalze aus dem Trägerelement in radialer Richtung der Antriebsspindel zu verhindern.The slide bearing is preferably mounted in a blocking member which is designed to prevent slippage of the at least one spindle roller from the carrier element in the radial direction of the drive spindle.

Somit können die Spindelwalzen sicher und zuverlässig in dem Trägerelement fixiert werden.Thus, the spindle rollers can be securely and reliably fixed in the support member.

Gemäß einer Ausführungsform ist die Antriebsspindel an einer ersten der mindestens zwei Lagerstellen in einem Wälzlager gelagert.According to one embodiment, the drive spindle is mounted on a first of the at least two bearing points in a rolling bearing.

Die Erfindung ermöglicht somit eine stabile und vergleichsweise verschleißfreie Lagerung der Antriebsspindel in dem Elektrowerkzeug.The invention thus enables a stable and comparatively wear-free mounting of the drive spindle in the power tool.

Das Wälzlager ist bevorzugt in einem Blockierglied gelagert, das dazu ausgebildet ist, ein Ausrutschen der mindestens einen Spindelwalze aus dem Trägerelement in radialer Richtung der Antriebsspindel zu verhindern.The rolling bearing is preferably mounted in a blocking member which is designed to prevent slippage of the at least one spindle roller from the carrier element in the radial direction of the drive spindle.

Somit können die Spindelwalzen sicher und zuverlässig in dem Trägerelement fixiert werden.Thus, the spindle rollers can be securely and reliably fixed in the support member.

Das Blockierglied ist bevorzugt ringförmig ausgebildet und drehfest mit dem Werkzeuggehäuse verbunden.The blocking member is preferably annular and rotatably connected to the tool housing.

Somit kann das Blockierglied auf einfache Art und Weise in dem Werkzeuggehäuse fixiert werden.Thus, the blocking member can be fixed in a simple manner in the tool housing.

Die Antriebsspindel ist bevorzugt an einer zweiten der mindestens zwei Lagerstellen in einem Wälzlager gelagert, das in dem Werkzeuggehäuse gelagert ist. Somit kann die Antriebsspindel stabil und vergleichsweise verschleißfrei in dem Elektrowerkzeug gelagert werden.The drive spindle is preferably mounted on a second of the at least two bearing points in a roller bearing, which is mounted in the tool housing. Thus, the drive spindle can be stored stable and relatively wear-free in the power tool.

Gemäß einer Ausführungsform ist das Trägerelement hülsenförmig ausgebildet und umgibt die Antriebsspindel zumindest abschnittsweise, wobei an dem Trägerelement mindestens eine Aussparung zur Aufnahme der mindestens einen Spindelwalze ausgebildet ist.According to one embodiment, the carrier element is sleeve-shaped and surrounds the drive spindle at least in sections, wherein on the carrier element at least one recess for receiving the at least one spindle roller is formed.

Die Erfindung ermöglicht somit die Bereitstellung eines einfachen und kostengünstigen Trägerelements, an dem die Spindelwalzen sicher und zuverlässig gelagert werden können.The invention thus enables the provision of a simple and cost-effective support element, on which the spindle rollers can be stored safely and reliably.

Das Trägerelement ist bevorzugt drehfest mit einem Antriebsglied des Getriebes verbunden.The carrier element is preferably non-rotatably connected to a drive member of the transmission.

Somit kann auf einfache Art und Weise eine Verkürzung der Baulänge in axialer Richtung der Antriebsspindel ermöglicht werden.Thus, a shortening of the overall length in the axial direction of the drive spindle can be made possible in a simple manner.

Gemäß einer Ausführungsform ist das Getriebe als Planetengetriebe ausgebildet und das Antriebsglied ist ein Planetenträger.According to one embodiment, the transmission is designed as a planetary gear and the drive member is a planet carrier.

Die Erfindung ermöglicht somit die Bereitstellung eines sicheren und zuverlässigen Getriebes.The invention thus enables the provision of a safe and reliable transmission.

Die Antriebsspindel ist bevorzugt unmittelbar von dem Antriebsglied antreibbar, wobei zwischen dem Antriebsglied und der Antriebsspindel ein vorgegebenes radiales Spiel ausgebildet ist.The drive spindle is preferably drivable directly from the drive member, wherein between the drive member and the drive spindle, a predetermined radial clearance is formed.

Somit kann die Antriebsspindel auf einfache Art und Weise angetrieben werden.Thus, the drive spindle can be driven in a simple manner.

Gemäß einer Ausführungsform ist die Antriebsspindel unmittelbar von dem Trägerelement antreibbar.According to one embodiment, the drive spindle can be driven directly by the carrier element.

Die Erfindung ermöglicht somit eine Verbesserung des Zusammenspiels von Trägerelement, Antriebsspindel und Antriebsglied.The invention thus enables an improvement of the interaction of carrier element, drive spindle and drive member.

Gemäß einer Ausführungsform ist auf der Antriebsspindel im Bereich einer ersten der mindestens zwei Lagerstellen ein Laufring drehfest angeordnet, der in einem zugeordneten Gleitlager gelagert ist.According to one embodiment, a raceway is rotatably mounted on the drive spindle in the region of a first of the at least two bearing points, which is mounted in an associated sliding bearing.

Somit kann auf einfache Art und Weise die Verwendung eines Gleitlagers an der ersten Lagerstelle ermöglicht werden.Thus, the use of a sliding bearing at the first bearing point can be made possible in a simple manner.

Im Bereich der Spindellockvorrichtung ist an der Antriebsspindel bervorzugt eine Bremsvorrichtung vorgesehen, die dazu ausgebildet ist, im Betrieb des Elektrowerkzeugs bei einem Auslauf der Antriebsspindel ein Rattern zu verhindern.In the area of the spindle locking device, a braking device is preferably provided on the drive spindle, which is designed to prevent chattering during operation of the power tool during an outflow of the drive spindle.

Durch die Bereitstellung einer im Bereich der Spindellockvorrichtung angeordneten Bremsvorrichtung kann eine ungewünschte Geräuschentwicklung der Antriebsspindel beim Auslauf sicher und zuverlässig zumindest reduziert werden.By providing a brake device arranged in the region of the spindle locking device, an undesired noise development of the drive spindle at the outlet can be reliably and reliably reduced at least.

Bevorzugt weist die Bremsvorrichtung einen O-Ring zur Realisierung einer Bremsfunktion auf.The brake device preferably has an O-ring for realizing a braking function.

Somit kann eine einfache und kostengünstige Bremsvorrichtung bereitgestellt werden.Thus, a simple and inexpensive braking device can be provided.

An der Antriebsspindel ist im Bereich der Spindellockvorrichtung bevorzugt eine Ringnut ausgebildet, in der der O-Ring angeordnet ist.On the drive spindle, an annular groove is preferably formed in the region of the spindle locking device, in which the O-ring is arranged.

Somit kann eine unkomplizierte und robuste Bremsvorrichtung bereitgestellt werden.Thus, an uncomplicated and robust braking device can be provided.

Gemäß einer Ausführungsform ist die Bremsvorrichtung im Bereich des Trägerelements angeordnet.According to one embodiment, the braking device is arranged in the region of the carrier element.

Die Erfindung ermöglicht somit die Bereitstellung eines handgeführten Elektrowerkzeugs mit einer einfachen und stabilen Spindellockvorrichtung.The invention thus enables the provision of a hand-held power tool with a simple and stable Spindellockvorrichtung.

Gemäß der Erfindung ist an dem Trägerelement mindestens eine Spindelwalze angeordnet.According to the invention, at least one spindle roller is arranged on the carrier element.

Die Erfindung ermöglicht somit die Bereitstellung einer Spindellockvorrichtung, bei der eine stabile und zuverlässige Lagerung der Spindelwalzen an der Antriebsspindel ermöglicht werden kann.The invention thus enables the provision of a spindle locking device in which a stable and reliable mounting of the spindle rollers on the drive spindle can be made possible.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

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

  • Fig. 1 eine schematische Ansicht eines handgeführten Elektrowerkzeugs gemäß der Erfindung,
  • Fig. 2 eine vergrößerte Schnittansicht eines Ausschnitts des Elektrowerkzeugs von Fig. 1 gemäß einer ersten Ausführungsform,
  • Fig. 3 eine perspektivische Explosionsdarstellung der Antriebsspindel, des Antriebsglieds, des Sinterlagers, des Kugellagers und der Spindellockvorrichtung von Fig. 2,
  • Fig. 4 die perspektivische Explosionsdarstellung von Fig. 3, gesehen aus einem anderen Blickwinkel,
  • Fig. 5 die Schnittansicht von Fig. 2 mit einer modifizierten Antriebsspindel,
  • Fig. 6 eine vergrößerte Schnittansicht des Ausschnitts des Elektrowerkzeugs von Fig. 1 gemäß einer zweiten Ausführungsform,
  • Fig. 7 eine perspektivische Explosionsdarstellung der Antriebsspindel, des Antriebsglieds, des Sinterlagers, des Laufrings, des Kugellagers und der Spindellockvorrichtung von Fig. 6,
  • Fig. 8 eine vergrößerte Schnittansicht des Ausschnitts des Elektröwerkzeugs von Fig. 1 gemäß einer dritten Ausführungsform,
  • Fig. 9 eine perspektivische Explosionsdarstellung der Antriebsspindel, des Antriebsglieds, der Kugellager und der Spindellockvorrichtung von Fig. 8,
  • Fig. 10 eine perspektivische Ansicht der Antriebsspindel von Fig. 9,
  • Fig. 11 eine perspektivische Rückansicht der Bauteile von Fig. 9 nach der Montage,
  • Fig. 12 eine vergrößerte Schnittansicht des Ausschnitts des Elektrowerkzeugs von Fig. 1 gemäß einer vierten Ausführungsform,
  • Fig. 13 eine perspektivische Rückansicht der Antriebsspindel, des Antriebsglieds und der Spindellockvorrichtung von Fig. 12 nach der Montage,
  • Fig. 14 eine perspektivische Explosionsdarstellung der Antriebsspindel, des Antriebsglieds, der Kugellager und der Spindellockvorrichtung von Fig. 12, und
  • Fig. 15 eine vergrößerte Schnittansicht des Ausschnitts des Elektrowerkzeugs von Fig. 1 gemäß einer fünften Ausführungsform.
The invention is explained in more detail in the following description with reference to exemplary embodiments illustrated in the drawings. Show it:
  • Fig. 1 a schematic view of a hand-held power tool according to the invention,
  • Fig. 2 an enlarged sectional view of a section of the power tool of Fig. 1 according to a first embodiment,
  • Fig. 3 an exploded perspective view of the drive spindle, the drive member, the sintered bearing, the ball bearing and the Spindellockvorrichtung of Fig. 2 .
  • Fig. 4 the perspective exploded view of Fig. 3 , seen from a different angle,
  • Fig. 5 the sectional view of Fig. 2 with a modified drive spindle,
  • Fig. 6 an enlarged sectional view of the section of the power tool of Fig. 1 according to a second embodiment,
  • Fig. 7 an exploded perspective view of the drive spindle, the drive member, the sintered bearing, the race, the ball bearing and the Spindellockvorrichtung of Fig. 6 .
  • Fig. 8 an enlarged sectional view of the section of the electric tool of Fig. 1 according to a third embodiment,
  • Fig. 9 an exploded perspective view of the drive spindle, the drive member, the ball bearing and the Spindellockvorrichtung of Fig. 8 .
  • Fig. 10 a perspective view of the drive spindle of Fig. 9 .
  • Fig. 11 a perspective rear view of the components of Fig. 9 after assembly,
  • Fig. 12 an enlarged sectional view of the section of the power tool of Fig. 1 according to a fourth embodiment,
  • Fig. 13 a rear perspective view of the drive spindle, the drive member and the spindle locking device of Fig. 12 after assembly,
  • Fig. 14 an exploded perspective view of the drive spindle, the drive member, the ball bearing and the Spindellockvorrichtung of Fig. 12 , and
  • Fig. 15 an enlarged sectional view of the section of the power tool of Fig. 1 according to a fifth embodiment.

Beschreibung der AusführungsbeispieleDescription of the embodiments

Fig. 1 zeigt ein handgeführtes Elektrowerkzeug 100, das ein Werkzeuggehäuse 105 mit einem Handgriff 115 aufweist. Gemäß einer Ausführungsform ist das Elektrowerkzeug 100 zur netzunabhängigen Stromversorgung mechanisch und elektrisch mit einem Akkupack 190 verbindbar. In Fig. 1 ist das Elektrowerkzeug 100 beispielhaft als Akku-Bohrschrauber ausgebildet. Es wird jedoch darauf hingewiesen, dass die vorliegende Erfindung nicht auf Akku-Bohrschrauber beschränkt ist, sondern vielmehr bei unterschiedlichen, insbesondere Akkubetriebenen Elektrowerkzeugen Anwendung finden kann, bei denen ein Werkzeug in Drehungen versetzt wird, z. B. bei einem Akku-Schrauber, einer Akku-Schlagbohrmaschine etc. Fig. 1 shows a hand-held power tool 100 having a tool housing 105 with a handle 115. According to one embodiment, the power tool 100 for mains-independent power supply is mechanically and electrically connectable to a battery pack 190. In Fig. 1 the power tool 100 is exemplified as a cordless drill driver. It should be noted, however, that the present invention is not limited to cordless drill, but can be found in different, especially battery-powered power tools application in which a tool is rotated, for. B. in a cordless screwdriver, a cordless hammer drill, etc.

In dem Gehäuse 105 sind ein von dem Akkupack 190 mit Strom versorgter, elektrischer Antriebsmotor 180 und ein Getriebe 170 angeordnet. Der Antriebsmotor 180 ist über das Getriebe 170 mit einer Antriebswelle 120, z. B. einer Antriebsspindel, verbunden. Der Antriebsmotor 180 ist illustrativ in einem Motorgehäuse 185 angeordnet und das Getriebe 170 in einem Getriebegehäuse 110, wobei das Getriebegehäuse 110 und das Motorgehäuse 185 beispielhaft in dem Gehäuse 105 angeordnet sind.In the housing 105, one of the battery pack 190 supplied with power, electric drive motor 180 and a transmission 170 are arranged. The drive motor 180 is connected via the gear 170 with a drive shaft 120, z. B. a drive spindle connected. The drive motor 180 is illustratively disposed in a motor housing 185 and the transmission 170 is disposed in a transmission housing 110, with the transmission housing 110 and the motor housing 185 being arranged in the housing 105 by way of example.

Das Getriebe 170 ist zur Übertragung eines von dem Antriebsmotor 180 erzeugten Drehmoments auf die Antriebsspindel 120 ausgebildet und gemäß einer Ausführungsform ein mit verschiedenen Gang- bzw. Planetenstufen ausgebildetes Planetengetriebe, das im Betrieb des Elektrowerkzeugs 100 vom Antriebsmotor 180 drehend angetrieben wird. Das Planetengetriebe 170 wird unten stehend in Bezug auf eine in Fig. 2 vergrößert dargestellte Schnittansicht eines Ausschnitts 200 beschrieben.The transmission 170 is designed to transmit a torque generated by the drive motor 180 to the drive spindle 120 and, according to one embodiment, a planetary gear formed with different gear or planetary stages, which is rotationally driven by the drive motor 180 during operation of the power tool 100. The planetary gear 170 will be described below with respect to a in Fig. 2 enlarged illustrated sectional view of a section 200 described.

Der Antriebsmotor 180 ist z. B. über einen Handschalter 195 betätigbar, d. h. ein- und ausschaltbar, und kann ein beliebiger Motortyp sein, z. B. ein elektronisch kommutierter Motor oder ein Gleichstrommotor. Vorzugsweise ist der Antriebsmotor 180 derart elektronisch steuer- bzw. regelbar, dass sowohl ein Reversierbetrieb, als auch Vorgaben hinsichtlich einer gewünschten Drehgeschwindigkeit realisierbar sind. Die Funktionsweise und der Aufbau eines geeigneten Antriebsmotors sind aus dem Stand der Technik hinreichend bekannt, sodass hier zwecks Knappheit der Beschreibung auf eine eingehende Beschreibung verzichtet wird.The drive motor 180 is z. B. via a manual switch 195 actuated, that is switched on and off, and may be any type of engine, for. As an electronically commutated motor or a DC motor. Preferably, the drive motor 180 can be electronically controlled or regulated in such a way that both a reversing operation and specifications with respect to a desired rotational speed can be realized. The mode of operation and the construction of a suitable drive motor are sufficiently known from the prior art, so that a detailed description of the description is omitted here for the sake of brevity.

Die Antriebsspindel 120 ist über eine Lageranordnung 130 drehbar im Gehäuse 105 gelagert und mit einer Werkzeugaufnahme 140 versehen, die im Bereich einer Stirnseite 112 des Gehäuses 105 angeordnet ist und beispielhaft ein Bohrfutter 145 aufweist. Die Lageranordnung 130 weist gemäß einer Ausführungsform mindestens zwei Lagerstellen 132, 134 auf, die in dem Werkzeuggehäuse 105 in einem dem Getriebe 170 nachgelagerten Bereich 299 vorgesehen sind. An den Lagerstellen 132, 134 sind zugeordnete Lager (z. B. 232, 234 in Fig. 2) angeordnet, die als Spindellager dienen und in denen die Antriebsspindel 120 gelagert ist. Die Werkzeugaufnahme 140 dient zur Aufnahme eines Werkzeugs 150 und kann an die Antriebsspindel 120 angeformt sein oder aufsatzförmig mit dieser verbunden sein. In Fig. 1 ist die Werkzeugaufnahme 140 beispielhaft aufsatzartig ausgebildet und über eine an der Antriebsspindel 120 vorgesehene Befestigungsvorrichtung 122 an dieser befestigt.The drive spindle 120 is rotatably supported by a bearing assembly 130 in the housing 105 and provided with a tool holder 140, which is arranged in the region of an end face 112 of the housing 105 and exemplarily has a drill chuck 145. According to one embodiment, the bearing arrangement 130 has at least two bearing points 132, 134 which are provided in the tool housing 105 in a region 299 located downstream of the gearbox 170. At the bearings 132, 134 are associated bearings (eg 232, 234 in Fig. 2 ), which serve as spindle bearings and in which the drive spindle 120 is mounted. The tool holder 140 serves to receive a tool 150 and may be formed on the drive spindle 120 or be connected in a tower-shaped manner with this. In Fig. 1 is the tool holder 140 exemplified tower-like and attached to a provided on the drive spindle 120 mounting device 122 thereto.

Gemäß der Erfindung ist der Antriebsspindel 120 eine Spindellockvorrichtung 250 zugeordnet. Diese ist in axialer Richtung der Antriebsspindel 120 zwischen den zwei Lagerstellen 132, 134 angeordnet, bevorzugt unmittelbar, und dient zur Zentrierung der Antriebsspindel 120 bei ausgeschaltetem Antriebsmotor 180. Die Funktionsweise von Spindellockvorrichtungen ist hinreichend aus dem Stand der Technik bekannt, sodass hier zwecks Knappheit der Beschreibung auf eine eingehende Beschreibung der Funktionsweise der Spindellockvorrichtung 250 verzichtet wird.According to the invention, the drive spindle 120 is associated with a spindle locking device 250. This is arranged in the axial direction of the drive spindle 120 between the two bearing points 132, 134, preferably directly, and serves to center the drive spindle 120 when the drive motor 180 is turned off. The operation of spindle locking devices is sufficiently known from the prior art, so that here for the sake of scarcity of Description will be omitted to a detailed description of the operation of the Spindellockvorrichtung 250.

Fig. 2 zeigt den Ausschnitt 200 des handgeführten Elektrowerkzeugs 100 von Fig. 1, bei dem zwecks Klarheit und Einfachheit der Zeichnung auf eine Darstellung des Werkzeugs 150 und der Werkzeugaufnahme 140 von Fig. 1 verzichtet wurde. Der Ausschnitt 200 verdeutlicht eine beispielhafte Ausgestaltung des Planetengetriebes 170, der Antriebsspindel 120, der Lageranordnung 130, sowie der Spindellockvorrichtung 250 gemäß einer ersten Ausführungsform. Fig. 2 shows the cutout 200 of the hand-held power tool 100 of Fig. 1 in which for the sake of clarity and simplicity of the drawing to a representation of the tool 150 and the tool holder 140 of Fig. 1 was waived. The cutout 200 illustrates an exemplary embodiment of the planetary gear 170, the drive spindle 120, the bearing assembly 130, as well as the Spindellockvorrichtung 250 according to a first embodiment.

Das Planetengetriebe 170 weist beispielhaft drei Gang- bzw. Planetenstufen auf: eine vordere Stufe 270, eine mittlere Stufe 271 und eine hintere Stufe 272. Die vordere Planetenstufe 270 hat beispielhaft ein Sonnenrad 203 mit einer Verzahnung 269, mindestens ein Planetenrad 205 mit einer Verzahnung 263, einen Planetenträger 204 mit einer Drehmitnahmekontur 267, sowie ein Hohlrad 206. Das Drehmoment des Antriebsmotors 180 von Fig. 1 wird über die Planetenstufen 272, 271, 270 mittels der Drehmitnahmekontur 267 des Planetenträgers 204 auf die Antriebsspindel 120 übertragen. Hierbei dient der Planetenträger 204 als Antriebsglied, um die Antriebsspindel 120 drehend anzutreiben. Da der Aufbau eines Planetengetriebes dem Fachmann hinreichend bekannt ist, wird hier zwecks Knappheit der Beschreibung auf eine weitere Beschreibung der Planetenstufen 271, 272 verzichtet.The planetary gear 170 has, by way of example, three gear or planetary stages: a front stage 270, a middle stage 271 and a rear stage 272. The front planetary stage 270 has for example a sun gear 203 with a toothing 269, at least one planetary gear 205 with a toothing 263 , a planet carrier 204 with a rotational drive contour 267, and a ring gear 206th The torque of the drive motor 180 of Fig. 1 is transmitted via the planetary stages 272, 271, 270 by means of the rotary driving contour 267 of the planet carrier 204 to the drive spindle 120. Here, the planet carrier 204 serves as a drive member to drive the drive spindle 120 rotationally. Since the structure of a planetary gear is well known to those skilled in the art, a further description of the planetary stages 271, 272 is omitted here for the sake of brevity.

Die Planetenstufen 270, 271, 272 sind illustrativ im Getriebegehäuse 110 angeordnet, das beispielhaft dreiteilig ausgeführt ist und ein Vorderteil 210, ein Mittelteil 212 und ein Rückteil 214 aufweist. Das Vorderteil 210 hat illustrativ ein Außengewinde 282, an dem beispielhaft ein Einstellring 295 drehbar gelagert ist. Am Innenumfang des Vorderteils 210 ist beispielhaft eine ringförmige Schulter 201 ausgebildet.The planetary stages 270, 271, 272 are illustratively arranged in the transmission housing 110, which is designed as an example in three parts and has a front part 210, a middle part 212 and a rear part 214. The front part 210 illustratively has an external thread 282 on which by way of example an adjusting ring 295 is rotatably mounted. On the inner periphery of the front part 210, an annular shoulder 201 is exemplified.

Die Antriebsspindel 120 weist die illustrativ als Außengewinde ausgebildete Befestigungsvorrichtung 122 auf, an der das Bohrfutter 145 der Werkzeugaufnahme 140 von Fig. 1 befestigbar ist, wobei das Außengewinde 122 z. B. mit einem am Bohrfutter 145 vorgesehenen Innengewinde in Gewindeeingriff gebracht werden kann. Darüber hinaus ist an der Antriebsspindel 120 beispielhaft ein Abstützflansch 255 vorgesehen.The drive spindle 120 has the illustrative formed as an external thread fastening device 122 on which the chuck 145 of the tool holder 140 of Fig. 1 is fastened, wherein the external thread 122 z. B. can be brought into threaded engagement with a provided on the drill chuck 145 internal thread. In addition, a support flange 255 is provided on the drive spindle 120 by way of example.

Die Lageranordnung 130 weist illustrativ ein Gleitlager 232, z. B. ein Sinterlager, und ein Wälzlager 234, z. B. ein Kugellager, auf. Das Sinterlager 232 ist beispielhaft an der nachfolgend auch als erste Lagerstelle bezeichneten Lagerstelle 132 angeordnet, die in Richtung der Werkzeugaufnahme 140 von Fig. 1 gesehen dem Planetenträger 204 und somit dem Getriebe 170 bevorzugt unmittelbar nachgelagert ist. Das Kugellager 234 ist beispielhaft an der nachfolgend auch als zweite Lagerstelle bezeichneten Lagerstelle 134 angeordnet, die in Richtung der Werkzeugaufnahme 140 von Fig. 1 gesehen vom Planetenträger 204 und somit vom Getriebe 170 beabstandet ist, und stützt sich am Abstützflansch 255 ab.The bearing assembly 130 illustratively includes a plain bearing 232, e.g. B. a sintered bearing, and a rolling bearing 234, z. B. a ball bearing on. The sintered bearing 232 is arranged by way of example at the bearing point 132, which is also referred to below as the first bearing point, and which points in the direction of the tool holder 140 of FIG Fig. 1 seen the planet carrier 204 and thus the transmission 170 is preferably immediately downstream. The ball bearing 234 is arranged by way of example at the bearing point 134, which is also referred to below as the second bearing point, and which points in the direction of the tool holder 140 of FIG Fig. 1 Seen from the planet carrier 204 and thus spaced from the gear 170, and is supported on the support flange 255 from.

Gemäß der Erfindung weist die Spindellockvorrichtung 250 ein auf der Antriebsspindel 120 mit einem vorgegebenen radialen Spiel gelagertes Trägerelement 252 auf, an dem mindestens eine Spindelwalze 254 angeordnet ist. Diese liegt in axialer Richtung der Antriebsspindel 120 gesehen zwischen den zwei Lagerstellen 132, 134 gegen die Antriebsspindel 120 an, bevorzugt unmittelbar zwischen dem Sinterlager 232 und dem Kugellager 234. Alternativ hierzu kann die Spindelwalze 254 z. B. an einem Innenring des Kugellagers 234 anliegen. Das Sinterlager 232 und die mindestens eine Spindelwalze 254 sind in einem Blockierglied 256 gelagert, das ebenfalls der Spindellockvorrichtung 250 zugeordnet und dazu ausgebildet ist, ein Ausrutschen der mindestens einen Spindelwalze 254 aus dem Trägerelement 252 in radialer Richtung der Antriebsspindel 120 zu verhindern.According to the invention, the spindle locking device 250 has a carrier element 252 mounted on the drive spindle 120 with a predetermined radial clearance, on which at least one spindle roller 254 is arranged. This is seen in the axial direction of the drive spindle 120 between the two Bearings 132, 134 against the drive spindle 120, preferably directly between the sintered bearing 232 and the ball bearing 234. Alternatively, the spindle roller 254 z. B. abut against an inner ring of the ball bearing 234. The sintered bearing 232 and the at least one spindle roller 254 are mounted in a blocking member 256, which is also associated with the spindle locking device 250 and designed to prevent slippage of the at least one spindle roller 254 from the carrier element 252 in the radial direction of the drive spindle 120.

Das Blockierglied 256 ist z. B. ringförmig ausgebildet und zumindest mittelbar drehfest mit dem Werkzeuggehäuse 105 verbunden. Illustrativ ist das Blockierglied 256 drehfest in das Vorderteil 210 des Getriebegehäuses 110 eingepresst, wobei sowohl in axialer als auch in radialer Richtung innerhalb vorgegebener Toleranzen ein entsprechendes Spiel vorhanden sein kann. Alternativ hierzu kann das Blockierglied 256 spielfrei mit dem Getriebegehäuse 110 verbunden sein. Beispielsweise kann das Blockierglied 256 einstückig mit dem Getriebegehäuse 110 ausgebildet oder z. B. durch Kunststoffspritzen an dieses angeformt sein.The blocking member 256 is z. B. annular and at least indirectly rotatably connected to the tool housing 105. Illustratively, the blocking member 256 is pressed against rotation in the front part 210 of the gear housing 110, wherein both in the axial and in the radial direction within predetermined tolerances, a corresponding clearance may be present. Alternatively, the blocking member 256 may be connected to the transmission housing 110 without play. For example, the blocking member 256 formed integrally with the gear housing 110 or z. B. be molded by plastic injection to this.

Fig. 3 zeigt den Planetenträger 204, das Sinterlager 232, das Blockierglied 256, das Trägerelement 252, die Spindelwalze 254, das Kugellager 234 und die Antriebsspindel 120 von Fig. 2. Wie oben beschrieben, bilden das Blockierglied 256, das Trägerelement 252 und die Spindelwalze 254 die mit der Antriebsspindel 120 verbundene Spindellockvorrichtung 250 von Fig. 2 aus. Fig. 3 shows the planet carrier 204, the sintered bearing 232, the blocking member 256, the support member 252, the spindle roller 254, the ball bearing 234 and the drive spindle 120 of Fig. 2 , As described above, the blocking member 256, the support member 252 and the spindle roller 254 form the spindle lock device 250 connected to the drive spindle 120 of FIG Fig. 2 out.

Gemäß einer Ausführungsform weist die Antriebsspindel 120 an einer vom Außengewinde 122 abgewandten Seite des Abstützflanschs 255 einen ringförmige Lagerstruktur 378 auf, die illustrativ mit einer ringförmigen Schulter 388 abschließt. Ausgehend von der ringförmigen Schulter 388 in Richtung des dem Außengewinde 122 gegenüberliegenden axialen Endes der Antriebsspindel 120 weist diese ein oder mehrere abgeflachte Seitenflächen 364 auf, die in ihrer Anzahl bevorzugt der Anzahl von Spindelwalzen 254 entsprechen. Darüber hinaus sind am dem Außengewinde 122 gegenüberliegenden axialen Ende der Antriebsspindel 120 nutartige Aussparungen 382, 384 ausgebildet.According to one embodiment, the drive spindle 120, on a side of the support flange 255 facing away from the external thread 122, has an annular bearing structure 378, which illustratively terminates with an annular shoulder 388. Starting from the annular shoulder 388 in the direction of the axial end of the drive spindle 120 opposite the external thread 122, this has one or more flattened side surfaces 364, which in number preferably correspond to the number of spindle rollers 254. In addition, on the external thread 122 opposite axial end of the drive spindle 120 groove-like recesses 382, 384 are formed.

Das Trägerelement 252 ist illustrativ hülsenförmig ausgebildet und weist an seinem Außenumfang einen Lagerring 340 auf, der bevorzugt einstückig mit dem Trägerelement 252 ausgebildet oder zumindest an dieses angeformt ist. An einem axialen Ende des Lagerrings 340 sind axiale Erweiterungen 322, 324, 326 vorgesehen, die sich ebenfalls radial auswärts über einen vom Lagerring gebildeten Außenumfang weg erstrecken. Am anderen axialen Ende des Lagerrings 340 sind bolzenartige Halteglieder 312, 314, 316 zur Fixierung des Trägerelements 252 am Planetenträger 204 vorgesehen.The support member 252 is illustratively sleeve-shaped and has on its outer circumference a bearing ring 340, which preferably integrally with the Carrier element 252 is formed or at least formed on this. At an axial end of the bearing ring 340 axial extensions 322, 324, 326 are provided, which also extend radially outwardly over an outer circumference formed by the bearing ring. At the other axial end of the bearing ring 340, bolt-like holding members 312, 314, 316 are provided for fixing the carrier element 252 to the planet carrier 204.

Die axialen und radialen Erweiterungen 322, 324, 326 bilden Aussparungen 352, 354, 356 zur Aufnahme von zugeordneten Spindelwalzen aus. Illustrativ ist die Spindelwalze 254 zur Aufnahme in der Aussparung 354 vorgesehen. Es wird jedoch darauf hingewiesen, dass eine beliebige Anzahl von Aussparungen zur Aufnahme einer beliebigen Anzahl von Spindelwalzen vorgesehen sein kann.The axial and radial extensions 322, 324, 326 form recesses 352, 354, 356 for receiving associated spindle rollers. Illustratively, the spindle roller 254 is provided for receiving in the recess 354. It should be noted, however, that any number of recesses may be provided to accommodate any number of spindle rolls.

Das Blockierglied 256 hat illustrativ eine Vielzahl von radialen auswärts gerichteten Vorsprüngen 302, 304, 306, 308. Diese dienen zur drehfesten Fixierung des Blockierglieds 256 im Vorderteil 210 des Getriebegehäuses 110 von Fig. 2, wie unten bei Fig. 6 beschrieben.The blocking member 256 illustratively has a plurality of radially outwardly directed projections 302, 304, 306, 308. These serve for the rotationally fixed fixing of the blocking member 256 in the front part 210 of the gear housing 110 of Fig. 2 as below Fig. 6 described.

Der Planetenträger 204 weist beispielhaft eine an einer etwa zentralen Öffnung ausgebildete Halte- und Mitnahmevorrichtung 450 auf. Diese realisiert beispielhaft die Drehmitnahmekontur 267 von Fig. 2 und wird unten bei Fig. 4 eingehend beschrieben.The planet carrier 204 has, for example, a holding and driving device 450 formed on an approximately central opening. This realized by way of example the rotational engagement contour 267 of Fig. 2 and will be down below Fig. 4 described in detail.

Im Folgenden wird eine beispielhafte Montage des Sinterlagers 232, des Blockierglieds 256, des Trägerelements 252, der Spindelwalze 254, des Kugellagers 234 und der Antriebsspindel 120 an dem Planetenträger 204 bzw. im Vorderteil 210 des Getriebegehäuses 110 von Fig. 2 beschrieben. Hierbei wird zunächst das Kugellager 234 auf die ringförmige Lagerstruktur 378 an der Antriebsspindel 120 aufgepresst und dann mit dieser in eine in Fig. 2 dem Außengewinde 122 zugewandte Öffnung des Vorderteils 210 eingepresst, bis das Kugellager 234 gegen die ringförmige Schulter 201 von Fig. 2 anliegt. Dann wird das Blockierglied 256 von dem dem Außengewinde 122 gegenüberliegenden axialen Ende der Antriebsspindel 120 ausgehend in axialer Richtung auf diese aufgeschoben und derart in das Vorderteil 210 eingepresst, das über dessen radiale Vorsprünge 302, 304, 306, 308 eine drehfeste Verbindung mit dem Vorderteil 210 erzeugt wird.In the following, an exemplary assembly of the sintered bearing 232, the blocking member 256, the carrier element 252, the spindle roller 254, the ball bearing 234 and the drive spindle 120 on the planet carrier 204 and in the front part 210 of the transmission housing 110 of Fig. 2 described. Here, first, the ball bearing 234 is pressed onto the annular bearing structure 378 on the drive spindle 120 and then with this in an in Fig. 2 the external thread 122 facing opening of the front part 210 pressed until the ball bearing 234 against the annular shoulder 201 of Fig. 2 is applied. Then, the blocking member 256 is pushed from the external thread 122 opposite the axial end of the drive spindle 120 in the axial direction on this and pressed into the front part 210, via its radial projections 302, 304, 306, 308 a rotationally fixed connection with the front part 210th is produced.

Anschließend wird das Trägerelement 252 mit den in seinen Aussparungen 352, 354, 356 angeordneten Spindelwalzen 254 auf die Antriebsspindel 120 auf- und somit in das Blockierglied 256 eingeschoben, sodass das Trägerelement 252 die Antriebsspindel 120 zumindest abschnittsweise umgibt und die Spindelwalze 254 gegen die vom Kugellager 234 abgewandte Seite der ringförmigen Schulter 201 von Fig. 2 anliegt. Um hierbei ein möglichst geringes Kippspiel der Antriebsspindel 120 zu erreichen, ist ein zwischen Spindel 120 und Trägerelement 252 mögliches, radiales Spiel bevorzugt sehr gering. Bevorzugt ist die Verbindung zwischen Spindel 120 und Trägerelement 252 spielfrei. Darüber hinaus liegt die Spindelwalze 254 gegen die abgeflachte Seitenfläche 364 der Antriebsspindel 120 an.Subsequently, the carrier element 252 with the arranged in its recesses 352, 354, 356 spindle rollers 254 on the drive spindle 120 and thus inserted into the blocking member 256, so that the support member 252 surrounds the drive spindle 120 at least partially and the spindle roller 254 against the ball bearing 234 facing away from the annular shoulder 201 of Fig. 2 is applied. In order to achieve the smallest possible tilting clearance of the drive spindle 120, a radial clearance possible between spindle 120 and carrier element 252 is preferably very small. Preferably, the connection between the spindle 120 and the carrier element 252 is free of play. In addition, the spindle roller 254 abuts against the flattened side surface 364 of the drive spindle 120.

Nachfolgend wird das Sinterlager 232 auf den Lagerring 340 des Trägerelements 252 aufgeschoben und dessen bolzenartige Halteglieder 312, 314, 316 und die Antriebsspindel 120 werden derart in der Halte- und Mitnahmevorrichtung 450 des Planetenträgers 204 verankert, dass zumindest die Antriebsspindel 120 über einen radial spielbehafteten Formschluss am Planetenträger 204 gelagert ist. Hierbei wird die Spindelwalze 254 wie oben beschrieben bevorzugt unmittelbar zwischen dem Sinterlager 232 und dem Kugellager 234 angeordnet.Subsequently, the sintered bearing 232 is pushed onto the bearing ring 340 of the carrier element 252 and its bolt-like holding members 312, 314, 316 and the drive spindle 120 are anchored in the holding and driving device 450 of the planet carrier 204 such that at least the drive spindle 120 via a radial clearance-prone positive connection is mounted on the planet carrier 204. Here, the spindle roller 254 is preferably arranged directly between the sintered bearing 232 and the ball bearing 234 as described above.

Fig. 4 zeigt den Planetenträger 204, das Sinterlager 232, das Blockierglied 256, das Trägerelement 252, die Spindelwalze 254, das Kugellager 234 und die Antriebsspindel 120 von Fig. 3. In Fig. 4 sind eine beispielhafte zweite abgeflachte Seitenfläche 462 an der Antriebsspindel 120 sowie ein weiterer radialer Vorsprung 402 am Blockierglied 256 illustriert. Fig. 4 shows the planet carrier 204, the sintered bearing 232, the blocking member 256, the support member 252, the spindle roller 254, the ball bearing 234 and the drive spindle 120 of Fig. 3 , In Fig. 4 For example, an exemplary second flattened side surface 462 on the drive spindle 120 and another radial projection 402 on the blocking member 256 are illustrated.

Gemäß einer Ausführungsform weist die Halte- und Mitnahmevorrichtung 450 des Planetenträgers 204 Haltenuten 412, 414, 416 und Mitnahmestege 482, 484, 486 auf. Die Haltnuten 412, 414, 416 dienen bei der in Fig. 3 beschriebenen Montage zur bevorzugt spielfreien Aufnahme der bolzenartigen Halteglieder 312, 314 bzw. 316 des Trägerelements 252. Die Mitnahmestege 482, 484, 486 sind dazu ausgebildet, bei der in Fig. 3 beschriebenen Montage in die nutartigen Aussparungen 382, 384 der Antriebsspindel 120 mit einem innerhalb geeigneter Toleranzen vorgegebenen, radialen Spiel einzugreifen, um somit einen drehenden Antrieb der Antriebsspindel 120 unmittelbar durch den Planetenträger 204 zu ermöglichen.According to one embodiment, the holding and driving device 450 of the planet carrier 204 has retaining grooves 412, 414, 416 and driving webs 482, 484, 486. The retaining grooves 412, 414, 416 are used in the in Fig. 3 described assembly for preferably play-free recording of the bolt-like holding members 312, 314 and 316 of the support member 252. The driving webs 482, 484, 486 are adapted to the in Fig. 3 assembly described in the groove-like recesses 382, 384 of the drive spindle 120 with a predetermined within appropriate tolerances, radial play, thus a rotating Drive the drive spindle 120 to allow directly through the planet carrier 204.

Es wird jedoch darauf hingewiesen, dass die in Fig. 2 bis 4 illustrierte Ausführungsform lediglich beispielhaften Charakter hat und nicht als Einschränkung der Erfindung zu verstehen ist. Vielmehr sind vielfache Abänderungen eines oder mehrerer Bauteile im Rahmen der vorliegenden Erfindung möglich, solange die erfinderische Funktionalität der Spindellockvorrichtung 250 von Fig. 2 bis 4 gewährleistet ist. Beispielsweise kann das Trägerelement 252 eine Lagerfunktion zum Blockierglied 256 an der ersten Lagerstelle 132 ausüben, sodass auf das Sinterlager 232 verzichtet werden kann. In einer alternativen Lösung kann das Trägerelement 252 kürzer als dargestellt ausgeführt sein, sodass das Sinterlager 232 unmittelbar in das Vorderteil 210 des Getriebegehäuses 110 eingepresst werden kann. Darüber hinaus kann das Blockierglied 256 in dem Vorderteil 210 z. B. formschlüssig mit Kunststoff umspritzt werden, sodass das umspritzte Blockierglied 256 anstelle der ringförmigen Schulter 201 als Anlagefläche für das Kugellager 234 dient. Des Weiteren können beispielsweise der Planetenträger 204 und das Trägerelement 252 einstückig ausgeführt sein bzw. das Trägerelement 252 kann an den Planetenträger 204 angeformt oder z. B. mittels Schweißen oder Kleben an diesem befestigt sein, wie beispielhaft in Fig. 15 gezeigt.It is noted, however, that the in Fig. 2 to 4 illustrated embodiment is merely exemplary in nature and should not be construed as limiting the invention. Rather, multiple variations of one or more components in the context of the present invention are possible, as long as the inventive functionality of the spindle locking device 250 of Fig. 2 to 4 is guaranteed. For example, the carrier element 252 can exert a bearing function to the blocking member 256 at the first bearing 132, so that the sintered bearing 232 can be dispensed with. In an alternative solution, the carrier element 252 may be made shorter than shown, so that the sintered bearing 232 can be pressed directly into the front part 210 of the transmission housing 110. In addition, the blocking member 256 in the front part 210 z. B. are positively molded with plastic, so that the overmolded blocking member 256 instead of the annular shoulder 201 serves as a bearing surface for the ball bearing 234. Furthermore, for example, the planet carrier 204 and the support member 252 may be made in one piece or the support member 252 may be integrally formed on the planet carrier 204 or z. B. by welding or gluing to this be attached, as exemplified in Fig. 15 shown.

Fig. 5 zeigt die Anordnung von Fig. 3 und 4 nach der bei Fig. 3 beschriebenen Montage. In Fig. 5 weist die Antriebsspindel 120 illustrativ im Bereich des Trägerelements 252 eine Ringnut 510 auf, in der z. B. ein O-Ring 520 angeordnet ist. Dieser realisiert eine Bremsfunktion zwischen Trägerelement 252 und Antriebsspindel 120, um somit im Betrieb des Elektrowerkzeugs 100 von Fig. 1 ein Rattern bei einem Auslauf der Antriebsspindel 120 zu verhindern. Fig. 5 shows the arrangement of Fig. 3 and 4 after the at Fig. 3 described assembly. In Fig. 5 the drive spindle 120 illustratively in the region of the support member 252 has an annular groove 510, in the z. B. an O-ring 520 is arranged. This realizes a braking function between the carrier element 252 and the drive spindle 120, in order thus during operation of the power tool 100 of Fig. 1 to prevent rattling at an outlet of the drive spindle 120.

Fig. 6 zeigt den Planetenträger 204, das Sinterlager 232, das Kugellager 234 von Fig. 2 bis 4 und eine Antriebsspindel 620, sowie das Blockierglied 256 von Fig. 2 bis 4, ein Trägerelement 650, ein Laufring 632 und die Spindelwalze 254 von Fig. 2 bis 4, die eine Spindellockvorrichtung 610 gemäß einer weiteren Ausführungsform ausbilden und in dem Vorderteil 210 von Fig. 2 angeordnet sind. Das Trägerelement 650 hat illustrativ einen Ringkragen 664, an dem in eine axiale Richtung ein bolzenartiges Halteglied 616 und in die gegenüberliegende axiale Richtung mindestens eine Aussparung 652 zur Aufnahme der Spindelwalze 254 sowie eine axiale Erweiterung 662 ausgebildet sind. Fig. 6 shows the planet carrier 204, the sintered bearing 232, the ball bearing 234 of Fig. 2 to 4 and a drive spindle 620, as well as the blocking member 256 of FIG Fig. 2 to 4 , a support member 650, a race 632 and the spindle roller 254 of FIG Fig. 2 to 4 , which form a spindle locking device 610 according to another embodiment and in the front part 210 of Fig. 2 are arranged. The support element 650 illustratively has an annular collar 664 on which in a axial direction a bolt-like retaining member 616 and in the opposite axial direction at least one recess 652 for receiving the spindle roller 254 and an axial extension 662 are formed.

Die Antriebsspindel 620 ist im Vergleich zur Antriebsspindel 120 von Fig. 2 bis 5 verkürzt und hat mindestens eine abgeflachte Seitenfläche 654, die in einer vom Abstützflansch 255 wegweisenden axialen Richtung in eine nutartige Aussparung 622 übergeht. Diese dient zur Aufnahme des bolzenartigen Halteglieds 616 des Trägerelements 650. Im Bereich dieses bolzenartigen Halteglieds 616 ist auf der Antriebsspindel 620 ein Laufring 632 angeordnet, vorzugsweise aufgepresst. Dieser ist in dem Sinterlager 232 gelagert.The drive spindle 620 is compared to the drive spindle 120 of Fig. 2 to 5 shortened and has at least one flattened side surface 654, which merges in a direction away from the support flange 255 axial direction in a groove-like recess 622. This serves to receive the bolt-like holding member 616 of the carrier element 650. In the area of this bolt-like holding member 616, a race 632 is arranged on the drive spindle 620, preferably pressed on. This is stored in the sintered bearing 232.

Fig. 7 zeigt die Anordnung von Fig. 6 ohne das Vorderteil 210 vor einer entsprechenden Montage, die ähnlich wie oben bei Fig. 3 beschrieben erfolgt. Gemäß einer Ausführungsform sind an dem Ringkragen 664 des Trägerelements 650 das bolzenartige Halteglied 616 und zwei weitere bolzenartige Halteglieder 712, 714, sowie die axiale Erweiterung 662 und zwei weitere axiale Erweiterungen 764, 766 ausgebildet, die die Aussparung 652 und zwei weitere Aussparungen zur Aufnahme der Spindelwalze 254 sowie zwei weiterer Spindelwalzen ausbilden. Fig. 7 shows the arrangement of Fig. 6 without the front part 210 before a corresponding mounting, similar to the above at Fig. 3 described. According to one embodiment, the bolt-like holding member 616 and two further bolt-like holding members 712, 714, and the axial extension 662 and two further axial extensions 764, 766 are formed on the annular collar 664 of the support member 650, the recess 652 and two further recesses for receiving the Form spindle roller 254 and two other spindle rollers.

Die Antriebsspindel 620 weist illustrativ einen vom Abstützflansch 255 wegweisenden Spindelkörper 790 auf, an dem eine ringförmige Lagerstruktur 378 zur Lagerung des Kugellagers 234 vorgesehen ist, die illustrativ mit einer ringförmigen Schulter 788 abschließt. An diese schließt die mindestens eine abgeflachte Seitenfläche 654 an, die in die nutartige Aussparung 622 übergeht. Darüber hinaus schließen illustrativ zwei Seitenflächen 782, 784 mit bogenförmigem Querschnitt an die ringförmige Schulter 788 an, die an einer weiteren Schulter 786 illustrativ in mindestens einen, bevorzugt drei Stege übergehen, von denen in Fig. 7 zwei Stege 794, 796 sichtbar sind.The drive spindle 620 illustratively has a spindle body 790 facing away from the support flange 255, on which an annular bearing structure 378 for supporting the ball bearing 234 is provided, which illustratively ends with an annular shoulder 788. The at least one flattened side surface 654, which merges into the groove-like recess 622, adjoins this. In addition, illustratively, two side surfaces 782, 784 of arcuate cross-section connect to the annular shoulder 788, which at another shoulder 786 illustratively transition into at least one, preferably three, webs, of which FIG Fig. 7 two webs 794, 796 are visible.

Der Planetenträger 204 weist in Fig. 7 eine Halte- und Mitnahmevorrichtung 720 auf, an der zur bevorzugt spielfreien Aufnahme der bolzenartigen Halteglieder 616, 712, 714 des Trägerelements 650 Haltenuten vorgesehen sind. Diese entsprechen im Wesentlichen den Haltenuten 412, 414, 416 von Fig. 4 und sind zwecks Einfachheit und Übersichtlichkeit der Zeichnung in Fig. 7 nicht gekennzeichnet. Darüber hinaus weist die Halte- und Mitnahmevorrichtung 720 Mitnahmenuten 724, 726, 728 zur Aufnahme der Stege 794, 796 der Antriebsspindel 620 auf, sodass diese über einen radial spielbehafteten Formschluss am Planetenträger 204 gelagert werden kann.The planet carrier 204 points in Fig. 7 a holding and entraining device 720, are provided on the preferably play-free recording of the bolt-like holding members 616, 712, 714 of the support member 650 retaining grooves. These essentially correspond to the retaining grooves 412, 414, 416 of FIG Fig. 4 and are for the sake of simplicity and clarity of the drawing in Fig. 7 not marked. In addition, the holding and driving device has 720 driving grooves 724, 726, 728 for receiving the webs 794, 796 of the drive spindle 620, so that they can be mounted on the planet carrier 204 via a radial play-affected form fit.

Fig. 8 zeigt die Anordnung von Fig. 7 nach einer Montage, bei der anstelle des Laufrings 632 und des Sinterlagers 232 ein Wälzlager 832, z.B. ein Kugellager, Anwendung findet. Dieses ist wie der Laufring 632 von Fig. 6 auf die Antriebsspindel 620 und das Trägerelement 650 aufgepresst. Darüber hinaus ist das Kugellager 832 in das Blockierglied 256 eingepresst. Fig. 8 shows the arrangement of Fig. 7 after an assembly, in which instead of the raceway 632 and the sintered bearing 232, a rolling bearing 832, such as a ball bearing, application applies. This is like the race 632 of Fig. 6 pressed onto the drive spindle 620 and the carrier element 650. In addition, the ball bearing 832 is pressed into the blocking member 256.

Fig. 9 zeigt die Anordnung von Fig. 8 vor der Montage. Fig. 9 verdeutlicht die Verwendung des Kugellagers 832 anstelle des Laufrings 632 und des Sinterlagers 232 von Fig. 6 und 7. Fig. 9 shows the arrangement of Fig. 8 before assembly. Fig. 9 illustrates the use of the ball bearing 832 instead of the race 632 and the sintered bearing 232 of Fig. 6 and 7 ,

Fig.10 zeigt die Antriebsspindel 620 von Fig. 6 bis 9. In Fig. 10 sind ein weiterer Steg 1094 und eine weitere Aussparung 1022 sichtbar. Figure 10 shows the drive spindle 620 of Fig. 6 to 9 , In Fig. 10 a further web 1094 and a further recess 1022 are visible.

Fig. 11 zeigt eine Rückansicht der Anordnung von Fig. 8 mit dem am Planetenträger 204 zumindest im Wesentlichen spielfrei gelagerten Trägerelement 650 und der ebenfalls am Planetenträger 204 gelagerten Antriebsspindel 620. Diese ist wie oben beschrieben über einen radial spielbehafteten Formschluss am Planetenträger 204 gelagert, sodass zwischen den Stegen 794, 796, 1094 der Antriebsspindel 620 und den Mitnahmenuten 724, 728 bzw. 726 jeweils ein innerhalb geeigneter Toleranzen vorgegebenes Spiel 1120 ausgebildet ist, das zwecks Einfachheit und Übersichtlichkeit der Darstellung in Fig. 11 lediglich einmal gekennzeichnet ist. Fig. 11 shows a rear view of the arrangement of Fig. 8 with the mounted on the planet carrier 204 at least substantially backlash-free support member 650 and also mounted on the planet carrier 204 drive spindle 620. This is as described above via a radially play-form fit on the planet carrier 204 mounted so that between the webs 794, 796, 1094 of the drive spindle 620 and the driving grooves 724, 728 and 726, respectively, a given within suitable tolerances game 1120 is formed, the sake of simplicity and clarity of illustration in Fig. 11 only once is marked.

Im Betrieb des Elektrowerkzeugs 100 von Fig. 1 erfolgt der Antrieb der Antriebsspindel 620 gemäß den in Fig. 2 bis 11 gezeigten Ausführungsformen unmittelbar durch den als Antriebsglied wirkenden Planetenträger 204. Dieser kann sich zwar relativ zur Antriebsspindel 620, aber bevorzugt nicht relativ zum Trägerelement 650 verdrehen.During operation of the power tool 100 of Fig. 1 the drive of the drive spindle 620 according to the in Fig. 2 to 11 shown embodiments by acting as a drive member planet carrier 204. Although this can rotate relative to the drive spindle 620, but preferably not relative to the support member 650.

Fig. 12 zeigt den Planetenträger 204, die Kugellager 832, 234 von Fig. 8 und eine Antriebsspindel 1220, sowie ein Blockierglied 1256, ein Trägerelement 1252 und die Spindelwalze 254 von Fig. 2 bis 11, die in dem Vorderteil 210 von Fig. 2 angeordnet sind und eine Spindellockvorrichtung 1210 gemäß einer weiteren Ausführungsform ausbilden, bei der das Trägerelement 1252 als Antriebsglied dient, wie unten bei Fig. 13 beschrieben. Das Blockierglied 1256 ist im Vergleich zum Blockierglied 256 der Fig. 2 bis 11 bevorzugt derart verkürzt ausgebildet, dass dieses im Wesentlichen nur einen Bereich des Trägerelements 1252 und der Antriebsspindel 1220 umgreift, in dem die mindestens eine Spindelwalze 254 angeordnet ist. Fig. 12 shows the planet carrier 204, the ball bearings 832, 234 of Fig. 8 and a drive spindle 1220, and a blocking member 1256, a support member 1252 and the spindle roller 254 of Fig. 2 to 11 in the front part 210 of Fig. 2 are arranged and form a spindle locking device 1210 according to another embodiment, in which the support member 1252 serves as a drive member, as below Fig. 13 described. The blocking member 1256 is compared to the blocking member 256 of Fig. 2 to 11 Preferably designed shortened such that this substantially encompasses only a portion of the support member 1252 and the drive spindle 1220, in which the at least one spindle roller 254 is arranged.

Die Antriebsspindel 1220 hat im Vergleich zur Antriebsspindel 620 von Fig. 6 bis 11 eine ringförmige Schulter 1222, an der sich die Antriebsspindel 1220 ausgehend von der mindestens einen abgeflachten Seitenfläche 654 in einer vom Abstützflansch 255 wegweisenden axialen Richtung hin in einen axialen Endbereich 1242 verjüngt, an dem mindestens eine Mitnahmenut 1278 ausgebildet ist. Diese dient zur Aufnahme eines zugeordneten, am illustrativ hülsenförmig ausgebildeten Trägerelement 1252 vorgesehenen, radial einwärts gerichteten Mitnahmestegs 1292, wie unten bei Fig. 13 beschrieben.The drive spindle 1220 has compared to the drive spindle 620 of Fig. 6 to 11 an annular shoulder 1222, at which the drive spindle 1220 tapers from the at least one flattened side surface 654 in an axial direction away from the support flange 255 into an axial end region 1242 on which at least one catch groove 1278 is formed. This serves to receive an associated, provided on the illustratively sleeve-shaped support member 1252, radially inwardly directed driving bar 1292, as below Fig. 13 described.

An dem Trägerelement 1252 ist illustrativ der Lagerring 340 von Fig. 3 vorgesehen. Auf diesen ist das in das Vorderteil 210 z. B. eingepresste oder durch Kunststoffspritzen eingespritzte Kugellager 832 aufgepresst.On the support member 1252 is illustratively the bearing ring 340 of Fig. 3 intended. On this is in the front part 210 z. B. pressed or injected by plastic injection ball bearing 832 pressed.

Fig. 13 zeigt die Anordnung von Fig. 12 ohne das Vorderteil 210. Fig. 13 verdeutlicht eine Vielzahl von radialen Vorsprüngen 1302, 1304, 1306, 1308, die beispielhaft an dem Blockierglied 1256 vorgesehen sind. Fig. 13 shows the arrangement of Fig. 12 without the front part 210. Fig. 13 illustrates a plurality of radial projections 1302, 1304, 1306, 1308, which are provided on the blocking member 1256 by way of example.

Gemäß einer Ausführungsform ist ein axialer Endbereich 1242 der Antriebsspindel 1220 in dem Trägerelement 1252 angeordnet, um einen radial spielbehafteten Formschluss zwischen Antriebsspindel 1220 und Trägerelement 1252 auszubilden. Hierzu greifen illustrativ der radial einwärts gerichtete Mitnahmesteg 1292 sowie zwei weitere radial einwärts gerichtete Mitnahmestege 1364, 1366 des Trägerelements 1252 in die Mitnahmenut 1278 bzw. zwei weitere Mitnahmenuten 1354, 1356 der Antriebsspindel 1220 mit einem innerhalb geeigneter Toleranzen vorgegebenen, radialen Spiel ein.According to one embodiment, an axial end region 1242 of the drive spindle 1220 is arranged in the carrier element 1252 in order to form a radially play-connected positive connection between the drive spindle 1220 and the carrier element 1252. For this purpose, illustratively, the radially inwardly directed carrier web 1292 and two further radially inwardly directed driving webs 1364, 1366 of the carrier element 1252 engage the receiving groove 1278 or two further driving grooves 1354, 1356 of the drive spindle 1220 with a radial clearance predetermined within suitable tolerances.

Zwischen dem Trägerelement 1252 und dem Planetenträger 204 ist beispielhaft ein zumindest im Wesentlichen spielfreier Formschluss ausgebildet, sodass das im Betrieb vom Planetenträger 204 angetriebene Trägerelement 1252 als Antriebsglied dient und unmittelbar die Antriebsspindel 1220 antreibt. Hierzu greifen an dem Trägerelement 1252 beispielhaft ausgebildete, radial auswärts gerichtete Mitnahmestege 1392, 1394, 1396 in zugeordnete Mitnahmenuten 1374, 1378 bzw. 1376 ein, die einer am Planetenträger 204 ausgebildeten Halte- und Mitnahmevorrichtung 1305 zugeordnet sind.Between the carrier element 1252 and the planet carrier 204, an at least substantially play-free positive connection is formed by way of example, so that the During operation, carrier element 1252 driven by planet carrier 204 serves as a drive member and directly drives drive spindle 1220. For this purpose, engage on the support member 1252 exemplarily formed, radially outwardly directed driving webs 1392, 1394, 1396 in associated driving grooves 1374, 1378 and 1376, which are assigned to a planet carrier 204 formed holding and driving device 1305.

Fig. 14 zeigt die Anordnung von Fig. 13 vor einer entsprechenden Montage. Fig. 14 verdeutlicht eine beispielhafte Ausgestaltung des Trägerelements 1252. Fig. 14 shows the arrangement of Fig. 13 before an appropriate installation. Fig. 14 illustrates an exemplary embodiment of the support member 1252.

Fig. 15 zeigt die Anordnung von Fig. 2 gemäß einer Ausführungsform, bei der der Planetenträger 204 und das Trägerelement 252 von Fig. 2 beispielhaft einstückig ausgebildet sind und ein illustratives Antriebsglied 1550 ausbilden. Fig. 15 shows the arrangement of Fig. 2 according to an embodiment in which the planet carrier 204 and the carrier element 252 of Fig. 2 example, are integrally formed and form an illustrative drive member 1550.

Claims (29)

  1. Hand-held electric tool (100) having a tool housing (105) in which a gearing (170) for transmitting a torque generated by a drive motor (180) to a drive spindle (120) is arranged, said drive spindle being assigned a spindle-locking device (250), wherein the drive spindle (120) is mounted in the tool housing (105) so as to be rotatable at at least two bearing points (132, 134), wherein the at least two bearing points (132, 134) are provided in the tool housing (105) in a region (299) mounted downstream of the gearing (170), and the spindle-locking device (250) is arranged between the two bearing points (132, 134) in the axial direction of the drive spindle (120), characterized in that the spindle-locking device (250) has a carrier element (252) which is mounted on the drive spindle (120) and on which at least one spindle roller (254) is arranged.
  2. Electric tool according to Claim 1, characterized in that the carrier element (252) is mounted on the drive spindle (120) with a predetermined radial play.
  3. Electric tool according to Claim 1 or 2, characterized in that the at least one spindle roller (254) bears against the drive spindle (120) directly between the two bearing points (132, 134) in the axial direction of the drive spindle (120).
  4. Electric tool according to one of the preceding claims, characterized in that, at a first (132) of the at least two bearing points (132, 134), the carrier element (252) is mounted in a plain bearing (232) by means of a bearing ring (340) formed on the outer circumference of said carrier element.
  5. Electric tool according to Claim 4, characterized in that the plain bearing (232) is mounted in a blocking member (256) which is designed to prevent the at least one spindle roller (254) from slipping out of the carrier element (252) in the radial direction of the drive spindle(120).
  6. Electric tool according to one of Claims 1 to 3, characterized in that, at a first (132) of the at least two bearing points (132, 134), the drive spindle (120) is mounted in a rolling bearing (832).
  7. Electric tool according to Claim 6, characterized in that the rolling bearing (832) is mounted in a blocking member (856) which is designed to prevent the at least one spindle roller (254) from slipping out of the carrier element (252) in the radial direction of the drive spindle (120).
  8. Electric tool according to one of Claims 4 to 6, characterized in that the blocking member (256; 856) is of annular design and is connected in a rotationally fixed manner to the tool housing (105).
  9. Electric tool according to one of the preceding claims, characterized in that, at a second (134) of the at least two bearing points (132, 134), the drive spindle (120) is mounted in a rolling bearing (234) which is mounted in the tool housing (105).
  10. Electric tool according to one of the preceding claims, characterized in that the carrier element (252) is of sleeve-shaped design and surrounds the drive spindle (120) at least in sections, wherein at least one recess (354) for receiving the at least one spindle roller (254) is formed on the carrier element (252).
  11. Electric tool according to one of the preceding claims, characterized in that the carrier element (252) is connected in a rotationally fixed manner to a drive member (204) of the gearing (170).
  12. Electric tool according to Claim 11, characterized in that the gearing (170) is designed as a planetary gearing and the drive member (204) is a planet carrier.
  13. Electric tool according to Claim 11 or 12, characterized in that the drive spindle (120) is driveable directly by the drive member (204), wherein a predetermined radial play is formed between the drive member (204) and the drive spindle (120).
  14. Electric tool according to Claim 11 or 12, characterized in that the drive spindle (120) is driveable directly by the carrier element (252).
  15. Electric tool according to Claim 1, characterized in that, in the region of a first (132) of the at least two bearing points (132, 134), a track ring (632) which is mounted in an assigned plain bearing (232) is arranged in a rotationally fixed manner on the drive spindle (120).
  16. Electric tool according to one of the preceding claims, characterized in that a braking device (520) is provided on the drive spindle (120) in the region of the spindle-locking device (250), said braking device being designed to prevent rattling at an outlet of the drive spindle (120) during the operation of the electric tool (100).
  17. Electric tool according to Claim 16, characterized in that the braking device (520) has an ○ ring (520) for realizing a braking function.
  18. Electric tool according to Claim 17, characterized in that an annular groove (510) in which the ○ ring (520) is arranged is formed on the drive spindle (120) in the region of the spindle-locking device (250).
  19. Electric tool according to one of Claims 16 to 18, characterized in that the braking device (520) is arranged in the region of the carrier element (252).
  20. Electric tool according to one of Claims 12 to 19, characterized in that the planet carrier (204) and the carrier element (252) are formed as a single piece.
  21. Electric tool according to Claim 1, characterized in that the carrier element (650) has an annular collar (664) on which a bolt-like retaining member (616) is formed in an axial direction and at least one recess (652) for receiving the spindle roller (254) is formed in the opposite axial direction, and an extension (662) is formed.
  22. Electric tool according to either of Claims 1 and 21, characterized in that the drive spindle (620) has at least one flattened side surface (654) which merges into a groove-like recess (622) in an axial direction pointing away from a supporting flange (255).
  23. Electric tool according to Claim 22, characterized in that the drive spindle (620) has a spindle body (790) which points away from the supporting flange (255) and on which an annular bearing structure (378) for the mounting of a ball bearing (234) is provided.
  24. Electric tool according to one of Claims 21 to 23, characterized in that the planet carrier (204) has a retaining and carry-along device (720) on which retaining grooves (412, 414, 416) are provided for receiving the bolt-like retaining member (616, 712, 714) of the carrier element (650).
  25. Electric tool according to Claim 24, characterized in that the retaining and carry-along device (720) has carry-along grooves (724, 726, 728) for receiving webs (794, 795) of the drive spindle (620).
  26. Electric tool according to Claim 1, characterized in that the drive spindle (1220) has an annular shoulder (1222) at which the drive spindle (1022) tapers from at least one flattened side surface (654) in an axial direction, which points away from the supporting flange (255), into an axial end region (1242) on which at least one carry-along groove (1278) is formed.
  27. Electric tool according to Claim 1, characterized in that a bearing ring (340) is provided on the carrier element (1252).
  28. Electric tool according to either of Claims 26 and 27, characterized in that an axial end region (1242) of the drive spindle (1220) is arranged in the carrier element (1252).
  29. Electric tool according to one of Claims 26 to 28, characterized in that a form-fitting connection is formed between the carrier element (1252) and the planet carrier (204), wherein the carrier element (1252) serves as the drive member and drives the drive spindle (1220) directly.
EP11761624.3A 2010-10-15 2011-09-28 Hand-held electric tool having a spindle-locking device Active EP2627483B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15159425.6A EP2913159B1 (en) 2010-10-15 2011-09-28 Hand-held electric tool having a spindle-locking device

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102010042497 2010-10-15
DE102011005553A DE102011005553A1 (en) 2010-10-15 2011-03-15 Hand-held power tool with a Spindellockvorrichtung
PCT/EP2011/066897 WO2012049024A2 (en) 2010-10-15 2011-09-28 Hand-held electric tool having a spindle-locking device

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP15159425.6A Division-Into EP2913159B1 (en) 2010-10-15 2011-09-28 Hand-held electric tool having a spindle-locking device
EP15159425.6A Division EP2913159B1 (en) 2010-10-15 2011-09-28 Hand-held electric tool having a spindle-locking device

Publications (2)

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EP2627483A2 EP2627483A2 (en) 2013-08-21
EP2627483B1 true EP2627483B1 (en) 2015-05-06

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EP11761624.3A Active EP2627483B1 (en) 2010-10-15 2011-09-28 Hand-held electric tool having a spindle-locking device

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US (1) US9724816B2 (en)
EP (2) EP2913159B1 (en)
CN (1) CN103153549A (en)
DE (1) DE102011005553A1 (en)
WO (1) WO2012049024A2 (en)

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Publication number Publication date
WO2012049024A3 (en) 2012-09-07
CN103153549A (en) 2013-06-12
US9724816B2 (en) 2017-08-08
DE102011005553A1 (en) 2012-04-19
EP2913159A1 (en) 2015-09-02
US20130270051A1 (en) 2013-10-17
EP2913159B1 (en) 2016-12-28
WO2012049024A2 (en) 2012-04-19
EP2627483A2 (en) 2013-08-21

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