EP2913159B1 - Outil électrique à main doté d'un dispositif de verrouillage de broche - Google Patents

Outil électrique à main doté d'un dispositif de verrouillage de broche Download PDF

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Publication number
EP2913159B1
EP2913159B1 EP15159425.6A EP15159425A EP2913159B1 EP 2913159 B1 EP2913159 B1 EP 2913159B1 EP 15159425 A EP15159425 A EP 15159425A EP 2913159 B1 EP2913159 B1 EP 2913159B1
Authority
EP
European Patent Office
Prior art keywords
spindle
drive spindle
electric tool
drive
tool according
Prior art date
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Application number
EP15159425.6A
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German (de)
English (en)
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EP2913159A1 (fr
Inventor
Joachim Hecht
Martin Kraus
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication of EP2913159A1 publication Critical patent/EP2913159A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • 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 EP 2 008 773 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 a shortened Length of the power tool with a simultaneous reduction of Kippspiels of its drive spindle allows.
  • the hand-held power tool on 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.
  • 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 embodiment 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 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 Spindellockvorides, wherein the drive spindle in the Tool housing is rotatably mounted on at least two bearings.
  • a braking device is provided on the drive spindle, which is designed to prevent chattering during operation of the power tool at an outlet of the drive spindle.
  • the invention thus makes it possible to provide a hand-held power tool, in which an undesired noise development of the drive spindle at the outlet can be reliably and reliably at least reduced by providing a braking device arranged in the area of the spindle locking device.
  • the brake device has an O-ring for realizing a braking function.
  • annular groove in which the O-ring is arranged, is formed on the drive spindle in the area of the spindle locking device.
  • the spindle locking device has a support element mounted on the drive spindle with a predetermined radial clearance.
  • 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.
  • the carrier element is preferably non-rotatably connected to a drive member of the transmission.
  • the drive spindle is preferably drivable directly from the carrier element.
  • the invention thus enables an improvement of the interaction of carrier element, drive spindle and drive member.
  • 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.
  • 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 preferably mounted by a formed on its outer circumference bearing ring at a first of the at least two bearing points in a sliding bearing.
  • 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 at least two bearing points are provided in the tool housing in a downstream region of the transmission and the spindle locking device is arranged in the axial direction of the drive spindle between the two bearing points.
  • a shortening of the overall length in the axial direction of the drive spindle can be achieved by an arrangement of the spindle locking device between the two bearings.
  • 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.
  • Fig. 1 is the power tool 100 exemplified trained as a cordless drill. 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 d. H. can be switched on and off, and can be any type of engine, eg. 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 design 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 purpose of conciseness of the description.
  • 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 assembly 130 according to one embodiment at least two bearing points 132, 134, which are provided in the tool housing 105 in a gear 170 downstream region 299.
  • 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 assigned 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 206.
  • 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 construction of a planetary gear is well known to those skilled in the art, here for the sake of brevity of the description on a further description of the planetary stages 271, 272 omitted.
  • 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 play, 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 the at least one spindle roller from slipping 254 from the support member 252 in the radial direction of the drive spindle 120 to prevent.
  • 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 carrier element 252 is illustratively sleeve-shaped and has on its outer circumference a bearing ring 340, which is preferably formed integrally with the carrier element 252 or at least formed on this.
  • a bearing ring 340 which is preferably formed integrally with the carrier element 252 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 starting in the axial direction on this and pressed into the front part 210, via the 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 possible between spindle 120 and support member 252 radial clearance is preferably very low.
  • 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 to intervene, thus allowing a rotary drive of the drive spindle 120 directly through the planet carrier 204.
  • the carrier element 252 has a bearing function to the blocking member 256 at the first bearing 132 exercise, so that can be dispensed with the sintered bearing 232.
  • 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 has an annular groove 510 in the region of the carrier element 252, in which 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 carrier element 650 illustratively has an annular collar 664 on which a bolt-like holding member 616 is formed in an axial direction and at least one recess 652 for receiving the spindle roller 254 and an axial extension 662 are formed in the opposite axial direction.
  • 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 is provided for supporting the ball bearing 234, which illustratively terminates 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 entraining device 720 driving grooves 724, 726, 728 for receiving the webs 794, 796 of the drive spindle 620, so that it can be mounted on the planet carrier 204 via a radial play-affected form fit.
  • Fig. 8 shows the arrangement of Fig. 7 after assembly, in which instead of the race 632 and the sintered bearing 232, a rolling bearing 832, z.
  • a rolling bearing 832 As a ball bearing, application finds. 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 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-prone form fit to the planet carrier 204 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 extends from the at least one flattened side surface 654 in one of the support flange 255 directional axial direction tapers in an axial end portion 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.
  • an at least substantially play-free positive connection is formed by way of example so that the carrier element 1252 driven by the planet carrier 204 during operation serves as a drive member and directly drives the 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 as an example in one piece are 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)
  • Portable Power Tools In General (AREA)
  • Mounting Of Bearings Or Others (AREA)

Claims (23)

  1. Outil électrique à main (100) comprenant un boîtier d'outil (105), dans lequel est disposée une transmission (170) pour transmettre un couple généré par un moteur d'entraînement (180) à une broche d'entraînement (120) à laquelle est associé un dispositif de verrouillage de broche (250) de l'outil électrique (100), la broche d'entraînement (120) étant supportée à rotation dans le boîtier d'outil (105) en au moins deux points de palier (132, 134), un dispositif de freinage (520) étant prévu dans la région du dispositif de verrouillage de broche (250) au niveau de la broche d'entraînement (120), lequel est réalisé pour empêcher un broutage pendant le fonctionnement de l'outil électrique (100) lors d'une progression vers l'arrêt de la broche d'entraînement (120), caractérisé en ce que le dispositif de freinage (520) présente un joint torique (520) pour réaliser une fonction de freinage et une rainure annulaire (510) est réalisée au niveau de la broche d'entraînement (120) dans la région du dispositif de verrouillage de broche (250), dans laquelle rainure annulaire est disposé le joint torique (520).
  2. Outil électrique selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le dispositif de verrouillage de broche (250) présente un élément de support (252) supporté sur la broche d'entraînement (120) avec un jeu radial prédéfini, le dispositif de freinage (520) étant disposé dans la région de l'élément de support (252).
  3. Outil électrique selon la revendication 2, caractérisé en ce que l'élément de support (252) est connecté de manière solidaire en rotation à un organe d'entraînement (204) de la transmission (170).
  4. Outil électrique selon la revendication 3, caractérisé en ce que la broche d'entraînement (120) peut être entraînée directement par l'élément de support (252).
  5. Outil électrique selon l'une quelconque des revendications 2 à 4, caractérisé en ce qu'au moins un rouleau de broche (254) est disposé sur l'élément de support (252).
  6. Outil électrique selon la revendication 5, caractérisé en ce que l'au moins un rouleau de broche (254) s'applique dans la direction axiale de la broche d'entraînement (120) directement entre les deux points de palier (132, 134) contre la broche d'entraînement (120).
  7. Outil électrique selon la revendication 5 ou 6, caractérisé en ce que l'élément de support (252) est supporté par une bague de palier (340) réalisée au niveau de sa circonférence extérieure sur un premier (132) des au moins deux points de palier (132, 134) dans un palier lisse (232).
  8. Outil électrique selon la revendication 7, caractérisé en ce que le palier lisse (232) est supporté dans un organe de blocage (256) qui est réalisé de manière à empêcher un glissement de l'au moins un rouleau de broche (254) hors de l'élément de support (252) dans la direction radiale de la broche d'entraînement (120).
  9. Outil électrique selon l'une quelconque des revendications précédentes, caractérisé en ce que les au moins deux points de palier (132, 134) sont prévus dans le boîtier d'outil (105) dans une région (299) disposée après la transmission (170) et le dispositif de verrouillage de broche (250) est disposé dans la direction axiale de la broche d'entraînement (120) entre les deux points de palier (132, 134).
  10. Outil électrique selon la revendication 9, caractérisé en ce que le dispositif de verrouillage de broche (250) présente un élément de support (252) supporté sur la broche d'entraînement (120) avec un jeu radial prédéfini, au niveau duquel élément de support est disposé l'au moins un rouleau de broche (254).
  11. Outil électrique selon la revendication 10, caractérisé en ce que l'au moins un rouleau de broche (254) s'applique dans la direction axiale de la broche d'entraînement (120) directement entre les deux points de palier (132, 134) contre la broche d'entraînement (120).
  12. Outil électrique selon la revendication 10 ou 11, caractérisé en ce que l'élément de support (252) est supporté par une bague de palier (340) réalisée au niveau de sa circonférence extérieure sur un premier (132) des au moins deux points de palier (132, 134) dans un palier lisse (232).
  13. Outil électrique selon la revendication 12, caractérisé en ce que le palier lisse (232) est supporté dans un organe de blocage (256) qui est réalisé de manière à empêcher un glissement de l'au moins un rouleau de broche (254) hors de l'élément de support (252) dans la direction radiale de la broche d'entraînement (120).
  14. Outil électrique selon la revendication 10 ou 11, caractérisé en ce que la broche d'entraînement (120) est supportée au niveau d'un premier (132) des au moins deux points de palier (132, 134) dans un palier à roulement (832).
  15. Outil électrique selon la revendication 14, caractérisé en ce que le palier à roulement (832) est supporté dans un organe de blocage (856) qui est réalisé de manière à empêcher un glissement de l'au moins un rouleau de broche (254) hors de l'élément de support (252) dans la direction radiale de la broche d'entraînement (120).
  16. Outil électrique selon l'une quelconque des revendications 13 à 15, caractérisé en ce que l'organe de blocage (256 ; 856) est réalisé sous forme annulaire et est connecté de manière solidaire en rotation au boîtier d'outil (105).
  17. Outil électrique selon l'une quelconque des revendications 10 à 16, caractérisé en ce que la broche d'entraînement (120) est supportée au niveau d'un deuxième (134) des au moins deux points de palier (132, 134) dans un palier à roulement (234) qui est supporté dans le boîtier d'outil (105).
  18. Outil électrique selon l'une quelconque des revendications 10 à 17, caractérisé en ce que l'élément de support (252) est réalisé en forme de douille et entoure au moins en partie la broche d'entraînement (120), au moins un évidement (354) pour recevoir l'au moins un rouleau de broche (254) étant réalisé au niveau de l'élément de support (252).
  19. Outil électrique selon l'une quelconque des revendications 10 à 18, caractérisé en ce que l'élément de support (252) est connecté de manière solidaire en rotation à un organe d'entraînement (204) de la transmission (170).
  20. Outil électrique selon la revendication 19, caractérisé en ce que la transmission (170) est réalisée sous forme de transmission planétaire et l'organe d'entraînement (204) est un porte-satellites.
  21. Outil électrique selon la revendication 19 ou 21, caractérisé en ce que la broche d'entraînement (120) peut être entraînée directement par l'organe d'entraînement (204), un jeu radial prédéfini étant réalisé entre l'organe d'entraînement (204) et la broche d'entraînement (120).
  22. Outil électrique selon la revendication 19 ou 21, caractérisé en ce que la broche d'entraînement (120) peut être entraînée directement par l'élément de support (252).
  23. Outil électrique selon la revendication 9, caractérisé en ce qu'une bague de roulement (632) est disposée de manière solidaire en rotation sur la broche d'entraînement (120) dans la région d'un premier (132) des au moins deux points de palier (130, 134), laquelle est supportée dans un palier lisse associé (232).
EP15159425.6A 2010-10-15 2011-09-28 Outil électrique à main doté d'un dispositif de verrouillage de broche Active EP2913159B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102010042497 2010-10-15
DE102011005553A DE102011005553A1 (de) 2010-10-15 2011-03-15 Handgeführtes Elektrowerkzeug mit einer Spindellockvorrichtung
EP11761624.3A EP2627483B1 (fr) 2010-10-15 2011-09-28 Outil électrique à main doté d'un dispositif verrou de broche

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP11761624.3A Division EP2627483B1 (fr) 2010-10-15 2011-09-28 Outil électrique à main doté d'un dispositif verrou de broche
EP11761624.3A Division-Into EP2627483B1 (fr) 2010-10-15 2011-09-28 Outil électrique à main doté d'un dispositif verrou de broche

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EP2913159A1 EP2913159A1 (fr) 2015-09-02
EP2913159B1 true EP2913159B1 (fr) 2016-12-28

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EP15159425.6A Active EP2913159B1 (fr) 2010-10-15 2011-09-28 Outil électrique à main doté d'un dispositif de verrouillage de broche
EP11761624.3A Active EP2627483B1 (fr) 2010-10-15 2011-09-28 Outil électrique à main doté d'un dispositif verrou de broche

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

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Also Published As

Publication number Publication date
EP2913159A1 (fr) 2015-09-02
DE102011005553A1 (de) 2012-04-19
EP2627483B1 (fr) 2015-05-06
US9724816B2 (en) 2017-08-08
US20130270051A1 (en) 2013-10-17
WO2012049024A2 (fr) 2012-04-19
CN103153549A (zh) 2013-06-12
EP2627483A2 (fr) 2013-08-21
WO2012049024A3 (fr) 2012-09-07

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