EP2627483A2 - Outil électrique à main doté d'un dispositif verrou de broche - Google Patents

Outil électrique à main doté d'un dispositif verrou de broche

Info

Publication number
EP2627483A2
EP2627483A2 EP11761624.3A EP11761624A EP2627483A2 EP 2627483 A2 EP2627483 A2 EP 2627483A2 EP 11761624 A EP11761624 A EP 11761624A EP 2627483 A2 EP2627483 A2 EP 2627483A2
Authority
EP
European Patent Office
Prior art keywords
spindle
drive spindle
power tool
drive
bearing
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.)
Granted
Application number
EP11761624.3A
Other languages
German (de)
English (en)
Other versions
EP2627483B1 (fr
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/fr
Publication of EP2627483A2 publication Critical patent/EP2627483A2/fr
Application granted granted Critical
Publication of EP2627483B1 publication Critical patent/EP2627483B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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 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 is rotatably mounted on at least two bearings.
  • 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.
  • a drive spindle provided with a spindle locking device is mounted in a tool housing at two bearing points.
  • 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 in a plane with a on or im
  • An object of the invention is therefore to provide a new hand-held power tool with a spindle locking device, which allows a shortened overall length of the power tool while reducing the tilting play of its drive spindle.
  • 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 invention thus enables the provision of a hand-held electric 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 support 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 reliably 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 reliably 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.
  • 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 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 at least two Bearing points is rotatably mounted.
  • 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 region of the spindle locking device.
  • the brake device preferably has an O-ring for implementation
  • 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 makes it possible to provide a hand-held electric tool with a simple and stable spindle locking device.
  • 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 is a schematic view of a hand-held power tool according to the invention
  • FIG. 2 is an enlarged sectional view of a section of the power tool of Fig. 1 according to a first embodiment
  • FIG. 3 is an exploded perspective view of the drive spindle, the drive member, the sintered bearing, the ball bearing and the spindle locking device of Fig. 2,
  • FIG. 4 is an exploded perspective view of Fig. 3, seen from a different angle, 5 shows the sectional view of FIG. 2 with a modified drive spindle, FIG.
  • FIG. 6 is an enlarged sectional view of the detail of the power tool of Fig. 1 according to a second embodiment
  • FIG. 7 is an exploded perspective view of the drive spindle, the drive member, the sintered bearing, the race, the ball bearing and the spindle locking device of Fig. 6,
  • FIG. 8 is an enlarged sectional view of the detail of the power tool of Fig. 1 according to a third embodiment
  • FIG. 9 is an exploded perspective view of the drive spindle, the drive member, the ball bearing and the spindle locking device of Fig. 8,
  • FIG. 10 is a perspective view of the drive spindle of Fig. 9,
  • FIG. 1 1 is a perspective rear view of the components of FIG. 9 after assembly
  • FIG. 12 is an enlarged sectional view of the detail of the power tool of Fig. 1 according to a fourth embodiment
  • FIG. 13 is a rear perspective view of the drive spindle, the drive member and the spindle locking device of FIG. 12 after assembly,
  • Fig. 14 is an exploded perspective view of the drive spindle, the drive member, the ball bearing and the spindle locking device of Fig. 12, and
  • FIG. 15 is an enlarged sectional view of the detail of the power tool of Fig. 1 according to a fifth embodiment.
  • Description of the embodiments 1 shows a hand-held power tool 100, which has 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. 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 battery impact 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 arranged in a motor housing 185 and the gear 170 in a gear housing 1 10, wherein the gear housing 1 10 and the motor housing 185 are 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 reference to an enlarged sectional view of a cutout 200 shown in FIG.
  • 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 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 mounted rotatably in the housing 105 via a bearing arrangement 130 and provided with a tool holder 140, which is arranged in the region of an end face 112 of the housing 105 and has a drill chuck 145 by way of example.
  • 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.
  • Assigned bearings (eg 232, 234 in FIG. 2) which serve as spindle bearings and in which the drive spindle 120 is mounted are arranged at the bearing points 132, 134.
  • 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.
  • the tool holder 140 is exemplified tower-like and attached to a provided on the drive spindle 120 fastening 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 out of the
  • FIG. 2 shows the cutout 200 of the hand-held power tool 100 of FIG.
  • FIG. 1 was omitted in the sake of clarity and simplicity of the drawing on a representation of the tool 150 and the tool holder 140 of FIG.
  • 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, for 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 Gearing 263, one
  • 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 to the drive spindle 120 via the planetary stages 272, 271, 270 by means of the rotational engagement contour 267 of the planet carrier 204.
  • 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 gear 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 to which the drill chuck 145 of the tool holder 140 of FIG. 1 can be 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, for example, at the bearing point 132, which is also referred to below as the first bearing point, and which, viewed in the direction of the tool receptacle 140 of FIG. 1, is preferably immediately downstream of the planet carrier 204 and thus the gear 170.
  • the ball bearing 234 is arranged, for example, at the bearing point 134, which is also referred to below as the second bearing location, which is spaced apart from the planet carrier 204 and thus from the gear 170 in the direction of the tool holder 140 of FIG. 1, and is supported on the support flange 255.
  • the spindle locking device 250 has a carrier element 252 which is mounted on the drive spindle 120 with a predetermined radial play and 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 rotatably pressed into the front part 210 of the gear housing 1 10, wherein both in the axial and in the radial direction within predetermined tolerances a corresponding game can be present.
  • the blocking member 256 can be connected without play with the gear housing 1 10.
  • the blocking member 256 formed integrally with the transmission housing 1 10 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 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 for fixing the support element
  • 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 outward-directed projections 302, 304, 306, 308. These serve for the rotationally fixed fixation of the
  • the planet carrier 204 has, for example, a holding and driving device 450 formed on an approximately central opening. This exemplifies the rotational engagement contour 267 of FIG. 2 and is described in detail below in FIG. 4.
  • the following is an exemplary assembly of the sintered bearing 232, the blocking member 256, the support member 252, the spindle roller 254, the ball bearing
  • the ball bearing 234 is first pressed onto the annular bearing structure 378 on the drive spindle 120 and then pressed with this in an in Fig. 2 the external thread 122 facing the opening of the front part 210 until the ball bearing 234 rests against the annular shoulder 201 of FIG , Then, the blocking member 256 is pushed from the external thread 122 opposite axial end of the drive spindle 120 starting in the axial direction on this and pressed into the front part 210, which via the radial projections 302, 304, 306, 308 a rotationally fixed connection with the Front part 210 is generated.
  • 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 sintered bearing 232 is pushed onto the bearing ring 340 of the support member 252 and the bolt-like holding members 312, 314, 316 and the
  • Drive spindle 120 are anchored in such a manner in the holding and driving device 450 of the planet carrier 204, that at least the drive spindle 120 is mounted on the planet carrier 204 via a form-locking with radial play.
  • 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 carrier element 252, the spindle roller 254, the ball bearing 234 and the drive spindle 120 of FIG. 3.
  • FIG. 4 shows an exemplary second flattened side surface 462 on the drive spindle 120 and another radial projection 402 on the blocking member 256 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 serve in that described in FIG.
  • the driving webs 482, 484, 486 are adapted to the assembly described in Fig. 3 in the groove-like recesses 382, 384 of the drive spindle 120 with an inside appropriate loranzen predetermined radial play intervene, thus a rotating Drive the drive spindle 120 to allow directly through the planet carrier 204.
  • FIGS. 2 to 4 is merely exemplary and not limiting
  • the carrier element 252 can perform a bearing function to the blocking member 256 at the first bearing 132, so that on the
  • Sinter bearing 232 can be omitted.
  • 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 gear housing 1 10.
  • 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.
  • 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 attached to this, as shown by way of example in Fig. 15.
  • Fig. 5 shows the arrangement of Figs. 3 and 4 according to the assembly described in Fig. 3.
  • 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 carrier element 252 and drive spindle 120, in order thus to prevent rattling during an outflow of the drive spindle 120 during operation of the power tool 100 of FIG. 1.
  • FIG. 6 shows the planet carrier 204, the sintered bearing 232, the ball bearing 234 of FIGS. 2 to 4 and a drive spindle 620, and the blocking member 256 of FIGS. 2 to 4, a carrier element 650, a race 632 and the spindle roller 254 of FIG 2 to 4, which form a spindle locking device 610 according to another embodiment and are arranged in the front part 210 of FIG.
  • the carrier element 650 illustratively has an annular collar 664, on which in a axial direction a bolt-like holding member 616 and in the opposite axial axial direction tion at least one recess 652 for receiving the spindle roller 254 and an axial extension 662 are formed.
  • the drive spindle 620 is shortened in comparison to the drive spindle 120 of FIGS. 2 to 5 and has at least one flattened side surface 654, which in one of the
  • Abstützflansch 255 pioneering axial direction in a groove-like recess 622 passes. 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 assembly, which is similar to that described above in Fig. 3.
  • the bolt-like holding member 616 and two further bolt-like holding members 712 are provided on the annular collar 664 of the carrier element 650, the bolt-like holding member 616 and two further bolt-like holding members 712,
  • 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 two webs 794, 796 are visible in FIG.
  • the planet carrier 204 has in Fig. 7, a holding and driving 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. 4 and are not marked in FIG. 7 for the sake of simplicity and clarity of the drawing.
  • the holding and driving device 720 carries along menuten 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 place of the
  • a ball bearing application finds. This is like the race 632 of FIG. 6 on the drive spindle 620 and the support member 650 pressed. In addition, the ball bearing 832 is pressed into the blocking member 256.
  • FIG. 9 shows the arrangement of Fig. 8 prior to assembly. 9 illustrates the use of the ball bearing 832 instead of the race 632 and the sintered bearing 232 of FIGS. 6 and 7.
  • FIG. 10 shows the drive spindle 620 of FIGS. 6 to 9.
  • FIG. 11 shows a rear view of the arrangement of FIG. 8 with the carrier element 650 mounted on the planet carrier 204 at least substantially free of play and the drive spindle 620 likewise mounted on the planet carrier 204. As described above, this is supported on the planet carrier 204 via a form-fit with radial play. 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, which is characterized for the sake of simplicity and clarity of illustration in Fig. 1 1 only once.
  • the drive spindle 620 is driven according to the embodiments shown in FIGS. 2 to 11 directly by the planetary carrier 204 acting as the drive member. This can be relative to the drive spindle 620, but preferably not relative to Twist carrier element 650.
  • FIG. 12 shows the planet carrier 204, the ball bearings 832, 234 of FIG. 8 and a drive spindle 1220, as well as a blocking member 1256, a carrier element 1252 and the spindle roller 254 of FIGS. 2 to 11, which are located 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 described below in Fig. 13.
  • the blocking member 1256 is preferably shortened in comparison to the blocking member 256 of FIGS. 2 to 11 such that it essentially encompasses only a region of the carrier element 1252 and the drive spindle 1220, in which the at least one spindle roller 254 is arranged.
  • the drive spindle 1220 in comparison to the drive spindle 620 of FIGS. 6 to 11, has an annular shoulder 1222, at which the drive spindle 1220 tapers into an axial end region 1242, starting from the at least one flattened side surface 654 in an axial direction facing away from the support flange 255 , on which at least one driving 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 described below in Fig. 13.
  • the bearing ring 340 of FIG. 3 is provided on the support element 1252. 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 a corresponding assembly.
  • FIG. 14 illustrates an example embodiment of the carrier element 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 are designed in one piece by way of example and form an illustrative drive member 1550.

Landscapes

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

Abstract

L'invention concerne un outil électrique à main (100) comprenant un boîtier (105) qui abrite un mécanisme de transmission (170) destiné à la transmission d'un couple de rotation qui est généré par un moteur d'entraînement (180), à une broche d'entraînement (120) qui est affectée à un dispositif verrou de broche (250), la broche d'entraînement (120) étant montée pivotante dans au moins deux paliers (132, 134) situés à l'intérieur du boîtier (105). Lesdits au moins deux paliers (132, 134) sont prévus dans une zone en aval du mécanisme de transmission (170) à l'intérieur du boîtier (105), et le dispositif verrou de broche (250) est disposé entre les deux paliers (132, 134) dans la direction axiale de la broche d'entraînement (120).
EP11761624.3A 2010-10-15 2011-09-28 Outil électrique à main doté d'un dispositif verrou de broche Active EP2627483B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15159425.6A EP2913159B1 (fr) 2010-10-15 2011-09-28 Outil électrique à main doté d'un dispositif de verrouillage de broche

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
PCT/EP2011/066897 WO2012049024A2 (fr) 2010-10-15 2011-09-28 Outil électrique à main doté d'un dispositif verrou de broche

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP15159425.6A Division EP2913159B1 (fr) 2010-10-15 2011-09-28 Outil électrique à main doté d'un dispositif de verrouillage de broche
EP15159425.6A Division-Into EP2913159B1 (fr) 2010-10-15 2011-09-28 Outil électrique à main doté d'un dispositif de verrouillage de broche

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EP2627483A2 true EP2627483A2 (fr) 2013-08-21
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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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US9943939B2 (en) 2010-11-11 2018-04-17 Robert Bosch Gmbh Hand-held machine tool having a spindle-locking device

Also Published As

Publication number Publication date
EP2913159B1 (fr) 2016-12-28
US20130270051A1 (en) 2013-10-17
EP2627483B1 (fr) 2015-05-06
WO2012049024A2 (fr) 2012-04-19
WO2012049024A3 (fr) 2012-09-07
DE102011005553A1 (de) 2012-04-19
CN103153549A (zh) 2013-06-12
US9724816B2 (en) 2017-08-08
EP2913159A1 (fr) 2015-09-02

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