EP2097224B1 - Machine-outil manuelle - Google Patents

Machine-outil manuelle Download PDF

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Publication number
EP2097224B1
EP2097224B1 EP07821379.0A EP07821379A EP2097224B1 EP 2097224 B1 EP2097224 B1 EP 2097224B1 EP 07821379 A EP07821379 A EP 07821379A EP 2097224 B1 EP2097224 B1 EP 2097224B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
torque
coupling element
switching
power tool
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.)
Not-in-force
Application number
EP07821379.0A
Other languages
German (de)
English (en)
Other versions
EP2097224A1 (fr
Inventor
Andre Ullrich
Helmut Heinzelmann
Juergen Lennartz
Michael Weiss
Tobias Herr
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
Publication of EP2097224A1 publication Critical patent/EP2097224A1/fr
Application granted granted Critical
Publication of EP2097224B1 publication Critical patent/EP2097224B1/fr
Not-in-force 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
    • B25D—PERCUSSIVE TOOLS
    • B25D16/00—Portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D16/006—Mode changers; Mechanisms connected thereto
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2211/00—Details of portable percussive tools with electromotor or other motor drive
    • B25D2211/06—Means for driving the impulse member
    • B25D2211/061—Swash-plate actuated impulse-driving mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D2216/0007—Details of percussion or rotation modes
    • B25D2216/0015—Tools having a percussion-only mode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D2216/0007—Details of percussion or rotation modes
    • B25D2216/0023—Tools having a percussion-and-rotation mode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D2216/0007—Details of percussion or rotation modes
    • B25D2216/0038—Tools having a rotation-only mode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D2217/0003—Details of shafts of percussive tool bits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/231—Sleeve details

Definitions

  • the invention is based on a hand tool according to the preamble of claim 1 and as from JP 9 239 675 A known.
  • the switching device is provided for switching between different modes and has a torque sleeve.
  • Out JP 9 239675 A is a rotary hammer with a beating and a rotating drive and a switching device for switching between different modes, wherein the switching device comprises a torque sleeve, and known with a bearing shaft which is rigidly connected in one mode with a housing of the hammer drill and rotatably mounted on the torque sleeve is.
  • the invention relates to a hand tool with the features of claim 1.
  • the power tool has a bearing axis on which the torque sleeve is rotatably mounted, whereby a particularly compact switching device with an efficient transmission of a drive torque, in particular a torque, can be achieved.
  • the torque sleeve is arranged immovably in an axial direction of the bearing axis on this.
  • a "switching between different operating modes" is intended, in particular, to switch between a beating or a beating-rotating drive, between a beating-rotating drive and a rotating drive, between a beating and a rotating drive, or between a beating, a rotating drive or a hitting-rotating drive for a tool located in the hand tool machine.
  • the torque sleeve is expediently provided to transmit torque to further units, such as a striking mechanism arrangement and / or a main driven means, such as a hammer tube, during operation of the hand tool.
  • the torque sleeve during operation of the power tool is rotationally connected to a drive unit, such as via a drive shaft.
  • a "bearing axis" is to be understood to mean an axle which is fixed and immovable, in particular non-rotatably connected to a housing of the handheld power tool and which is provided for mounting further components of the handheld power tool.
  • the hand tool machine is formed by a hammer drill, which has a pure bit drive, a pure drill drive and a combined drill chisel drive for driven by the power tool tool.
  • the bearing axis is rigidly connected to a portable power tool housing, whereby a mass to be rotated in a torque transmission to a mass of the torque sleeve can be reduced, so that a torque transmission with low energy losses can be achieved.
  • the bearing axis can be directly or particularly advantageous indirectly connected to the power tool housing, such as by means of a Swissflanschs.
  • the switching device has a gear unit which is rotatably mounted on the bearing axis, whereby structurally simple drive torque in the form of a torque can be transmitted by means of the gear unit.
  • the gear unit is interposed between the torque sleeve and another unit and so provided for transmitting the torque from the torque sleeve to the further unit, such as a hammer tube for generating a rotary drive for a tool and / or on a percussion device, a Impact momentum generated for a tool.
  • the gear unit has at least one coupling element which is provided for transmitting a torque for a rotary drive of a tool.
  • the coupling element is integrally formed as a toothing to the gear unit.
  • the switching device has a switching sleeve which is provided for a torque transmission from the torque sleeve to the gear unit.
  • a particularly compact switching device can be achieved by the switching sleeve, which is preferably shorter than the torque sleeve, transmits a torque within a particularly short transmission range.
  • the shift sleeve is also provided for shifting into different types of drive of the hand tool for a tool, such as a chisel drive, a drill drive, etc.
  • the gear unit has at least one further coupling element which is provided for transmitting torque from the shift sleeve to the gear unit, whereby a particularly low-wear torque transmission can be achieved.
  • the coupling element is formed by a toothing corresponding to the switching sleeve or to a coupling element of the switching sleeve.
  • a permanent transmission of a drive torque, in particular a torque, during operation of the power tool can advantageously be achieved if the shifting device has at least one coupling element which rotatably connects the sliding sleeve to the torque sleeve.
  • the sliding sleeve is thus always on the torque sleeve during operation of the power tool rotating to a drive unit, such as an electric motor connected.
  • the shift sleeve along an axial direction on the torque sleeve is slidably disposed, so that the switching sleeve during operation of the power tool or the switching device by moving in the axial direction on the torque sleeve can be easily brought into different switching positions and operating positions.
  • the shift sleeve has at least one coupling element which transmits torque in at least one operating position to a striking mechanism arrangement, whereby a positive and particularly low-wear transmission to the striking mechanism arrangement can be achieved.
  • the coupling element of the shift sleeve for transmitting torque to the percussion device is formed integrally with a coupling element of the shift sleeve, which rotatably connects this during operation of the power tool with the torque sleeve, so that more components, space, assembly costs and costs can be advantageously saved.
  • the shift sleeve is provided in at least one mode to a simultaneous transmission of torque to the gear unit and the percussion mechanism and so structurally simple, a compact switching device can be achieved.
  • the shift sleeve preferably has a length along an axial direction, which allows simultaneous engagement of components of the striking mechanism arrangement and the gear unit coupling to the sliding sleeve in at least one operating position.
  • FIGS. 1 to 3 is a detail of an inventive, formed by a rotary hammer hand tool 10 with a switching device 12 is shown.
  • the hand tool 10 comprises a non-illustrated, formed by an electric motor drive unit, which is in operation the power tool 10 generates a drive torque and this transmits via a drive shaft 38 to a torque sleeve 14.
  • the drive torque is transmitted during operation of the power tool 10 of the torque sleeve 14 on a percussion device 34 and on a hammer tube 40 formed Hauptabtriebsstoff and thereby generates a rotating, a beating or a hitting-rotating drive of a located in a tool holder tool 24.
  • Bei a transmission of the drive torque to the hammer tube 40 rotates this about a tool axis 42 and thus generates a rotating drive in the FIGS. 1 to 3 not shown tool holder, in which the tool 24 is arranged against rotation.
  • this When transmitting a drive torque on the impact mechanism 34, this generates a shock pulse which is transmitted via a rack, not shown on an anvil and finally on the tool 24 ( FIGS. 1 to 3 ).
  • the switching device 12 comprises the torque sleeve 14, a bearing shaft 16, a gear unit 20 and a shift sleeve 26, which is provided for switching between different types of drive of the power tool 10.
  • the bearing shaft 16 has a drive-side end 44 and a driven-side end 46 and is connected to these rigid and immovable with an intermediate flange 18 of a hand tool housing.
  • the torque sleeve 14 is rotatably and immovably mounted in an axial direction 32 via a bearing not shown in detail.
  • the axial direction 32 extends parallel to the tool axis 42.
  • the torque sleeve 14 extends in the axial direction 32 of the bearing axis 16 of the drive-side end 44th to a center of the bearing axis 16.
  • a gear 50 through which the drive torque from the drive shaft 38 which has a gear 50 corresponding toothing and engages positively in the gear 50 , is transmitted to the torque sleeve 14, so that during operation of the power tool 10 is always a drive torque of the drive unit is transmitted to the torque sleeve 14 ( FIGS. 1 to 3 ).
  • the shift sleeve 26 is arranged against rotation about the torque sleeve 14.
  • the switching device 12 a coupling element 30 which is formed by a driving toothing and the shift sleeve 26 rotatably connected to the torque sleeve 14.
  • the coupling element 30 is rotatably connected to the torque sleeve 14 in an axial direction 32 of the torque sleeve 14 on the output side end 52.
  • this On a radially outwardly directed side of the coupling element 30, this has a toothing, into which a coupling element 30 corresponding, formed by a coupling element 36 internal toothing of the shift sleeve 26 engages positively, wherein the internal toothing on a radially inwardly facing cylinder surface ( FIGS. 1 to 2 ) of the switching sleeve 26 is arranged.
  • the coupling element 36 of the shift sleeve 26 extends in the axial direction 32 over an entire length 54 of the shift sleeve 26, so that the shift sleeve 26 by an operator of the power tool 10 for switching to different types of drive for the located in the tool holder tool 24 in different switching positions along the Axial direction 32 of the torque sleeve 14 can be moved ( FIGS. 1 to 3 ).
  • the shift sleeve 26 is always independent of the different switching positions along the torque sleeve 14 against rotation connected thereto.
  • the switching sleeve 26 receives during operation of the power tool 10 along the torque sleeve 14 in the axial direction 32 different switching positions ( FIGS. 1 to 3 ).
  • a first switching position in which the switching device 12 and the switching sleeve 26 switches in a pure drill drive for the tool 24, the shift sleeve 26 is brought via an unspecified and operable for an operator actuator in a front, output side position ( FIG. 1 ).
  • the shift sleeve 26 transmits a drive torque to the gear unit 20, which is rotatably and immovably mounted in the axial direction 32 via a not-shown bearing on the bearing axis 16.
  • the gear unit 20 is connected to the torque sleeve 14 or to the coupling element 30 of the torque sleeve 14 rotatably relative to the torque sleeve 14 along the axial direction 32 of the bearing axis 16.
  • this has a coupling element 28 which is formed by a toothed wheel 20 integrally formed on the gear unit and has a toothing, which is arranged on a radially outwardly directed surface of the coupling element 28.
  • the toothing of the coupling element 28 is adapted to the coupling element 36 of the switching sleeve 26, so that a positive engagement of the coupling element 36 of the switching sleeve 26 and the toothing of the coupling element 28 of the gear unit 20 within the first switching position or in a drilling operation of the power tool 10 is achieved ( FIG. 1 ).
  • the gear unit 20 also has a further coupling element 22 which is arranged on a driven-side end 64 of the gear unit 20.
  • the coupling element 22 is formed by a gear formed integrally with the gear unit 20, which has a toothing on a radially outwardly directed surface 66 of the coupling element 22.
  • the coupling element 22 engages in a drilling operation of the power tool 10 in a coupling element 22 corresponding, formed by a gear coupling element 68 which is arranged against rotation on the hammer tube 40.
  • a drive torque is transmitted from the shift sleeve 26 or the coupling element 36 of the shift sleeve 26 to the coupling element 28 of the gear unit 20 and from the gear unit 20 and the further coupling element 22 of the gear unit 20 to the coupling element 68th of the hammer tube 40 transmitted. If the shift sleeve 26 is located in the output end position, the coupling element 36 of the shift sleeve 26 covers only the coupling element 30 of the torque sleeve 14 and the coupling element 28 of the gear unit 20, so that the tool 24 is driven in an exclusive drill drive ( FIG. 1 ).
  • the shift sleeve 26 simultaneously transmits a drive torque to the coupling element 28 of the gear unit 20 and to the percussion mechanism assembly 34 or to a coupling element 70 of the impact mechanism arrangement 34 (FIG. FIG. 2 ).
  • the switching sleeve 26 is pushed into a middle shift position along the axial direction 32 of the torque sleeve 14, in which the coupling element 36 of the shift sleeve 26 with the output end 56 still in engagement with the coupling element 28 of the gear unit 20 and with a drive end 72 in engagement with the coupling element 70 of Impact mechanism 34 is.
  • the hand tool 10 thus simultaneously performs a drilling and chisel movement for a tool 24.
  • the percussion mechanism 34 comprises a wobble finger 74, which is mounted on a wobble sleeve 78 via a ball bearing 76.
  • the wobble sleeve 78 is freely rotatably mounted on the torque sleeve 14 via a bearing 80 which is formed by a needle bearing.
  • the wobble sleeve 78 is immovably mounted on the torque sleeve 14 in the axial direction 32.
  • On a driven-side end 82 of the wobble sleeve 78 this has the coupling element 70, which is formed by a toothing corresponding to the internal toothing of the coupling element 36 of the switching sleeve 26 and rotationally fixed to the wobble sleeve 78 is arranged. Via the coupling element 36 of the shift sleeve 26, the torque is transmitted to the coupling element 70 and thus to the wobble sleeve 78 and thus driven the percussion mechanism 34.
  • a third shift position of the shift sleeve 26 this exclusively transmits a drive torque to the impact mechanism arrangement 34 (FIG. FIG. 3 ).
  • the switching sleeve 26 is in a drive-side end position on the torque sleeve 14 and on the torque sleeve 14 together with the coupling element 30, wherein the coupling element 36 of the switching sleeve 26 in the axial direction 32 completely covers the coupling element 70 of the wobble sleeve 78.
  • the coupling element 36 of the shift sleeve 26 and the coupling element 28 of the gear unit 20 are in a decoupled position to each other, so that the tool 24 is in an exclusive chisel operation.
  • a befindliches on the output side end 56 of the shift sleeve 26 locking 58 is moved together with the shift sleeve 26.
  • the locking means 58 is arranged in a semicircle around the gear unit 20.
  • the locking means 58 has a not shown in detail, radially inwardly facing internal toothing, which is in the pure chisel operation of the power tool in engagement with the coupling element 28 of the gear unit 20 and the gear unit 20 locked against rotation, ie, the gear unit 20 is located opposite the shift sleeve 26 in a resting position.

Claims (6)

  1. Machine-outil manuelle, en particulier marteau perforateur, comprenant un entraînement à percussion et un entraînement en rotation et un dispositif de commutation (12) pour commuter entre différents modes de fonctionnement, le dispositif de commutation (12) présentant une douille dynamométrique (14), un axe de palier (16), qui est connecté rigidement à un boîtier de la machine-outil manuelle (18) et sur lequel est montée à rotation la douille dynamométrique (14), et une unité de roue dentée (20), qui est montée à rotation sur l'axe de palier (16), le dispositif de commutation (12) présentant en outre une douille de commutation (26) qui est prévue pour transmettre le couple de la douille dynamométrique (14) à l'unité de roue dentée (20), caractérisée en ce que la douille de commutation (26) présente au moins un élément de couplage (36) qui transfère un couple à un agencement de percussion (34) dans au moins une position fonctionnelle.
  2. Machine-outil manuelle selon la revendication 1, caractérisée en ce que l'unité de roue dentée (20) présente au moins un élément de couplage (22) qui est prévu pour transférer un couple pour un entraînement en rotation d'un outil (24).
  3. Machine-outil manuelle selon au moins la revendication 1, caractérisée en ce que l'unité de roue dentée (20) présente au moins un élément de couplage supplémentaire (28), qui est prévu pour un transfert de couple de la douille de commutation (26) à l'unité de roue dentée (20).
  4. Machine-outil manuelle selon au moins la revendication 1, caractérisée en ce que le dispositif de commutation (12) présente au moins un élément de couplage (30, 36) qui relie la douille de commutation (26) de manière solidaire en rotation à la douille dynamométrique (14).
  5. Machine-outil manuelle selon au moins la revendication 1, caractérisée en ce que la douille de commutation (26) est disposée de manière déplaçable le long d'une direction axiale (32) sur la douille dynamométrique (14).
  6. Machine-outil manuelle selon au moins la revendication 1, caractérisée en ce que la douille de commutation (26) est prévue dans au moins un mode de fonctionnement en vue d'un transfert simultané d'un couple à l'unité de roue dentée (20) et à un agencement de percussion (34).
EP07821379.0A 2006-12-01 2007-10-16 Machine-outil manuelle Not-in-force EP2097224B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610056853 DE102006056853A1 (de) 2006-12-01 2006-12-01 Handwerkzeugmaschine
PCT/EP2007/061013 WO2008064953A1 (fr) 2006-12-01 2007-10-16 Machine-outil manuelle

Publications (2)

Publication Number Publication Date
EP2097224A1 EP2097224A1 (fr) 2009-09-09
EP2097224B1 true EP2097224B1 (fr) 2013-12-11

Family

ID=38983979

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07821379.0A Not-in-force EP2097224B1 (fr) 2006-12-01 2007-10-16 Machine-outil manuelle

Country Status (5)

Country Link
EP (1) EP2097224B1 (fr)
CN (1) CN101541481B (fr)
DE (1) DE102006056853A1 (fr)
RU (1) RU2453419C2 (fr)
WO (1) WO2008064953A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008054692A1 (de) * 2008-12-16 2010-06-17 Robert Bosch Gmbh Handwerkzeugmaschine
DE102013216545A1 (de) * 2013-08-21 2015-02-26 Robert Bosch Gmbh Getriebevorrichtung
CN210081641U (zh) 2017-05-05 2020-02-18 米沃奇电动工具公司 锤钻
CN108927545A (zh) * 2018-08-09 2018-12-04 台州来智科技有限公司 一种冷却水循环双模式驱动选择钻孔装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3819125A1 (de) * 1988-06-04 1989-12-14 Bosch Gmbh Robert Bohrhammer
JPH09239675A (ja) 1996-03-08 1997-09-16 Hitachi Koki Co Ltd ハンマドリルの動作モード切換装置
JP3843914B2 (ja) * 2002-08-27 2006-11-08 松下電工株式会社 ハンマードリル
DE10355812A1 (de) * 2003-11-28 2005-06-09 Robert Bosch Gmbh Elektrowerkzeugmaschine
RU2272118C1 (ru) * 2004-09-02 2006-03-20 Открытое Акционерное Общество "Институт Механизированного Инструмента" (ВНИИСМИ) Ударно-вращательная машина
DE102004058686A1 (de) * 2004-09-03 2006-03-09 Robert Bosch Gmbh Elektrowerkzeug mit einem zwischen den Betriebsarten Bohren, Schlagbohren, Meißeln umschaltbaren Antrieb
DE102004045117A1 (de) * 2004-09-17 2006-03-23 Robert Bosch Gmbh Schaltvorrichtung

Also Published As

Publication number Publication date
EP2097224A1 (fr) 2009-09-09
RU2009124771A (ru) 2011-01-10
DE102006056853A1 (de) 2008-06-05
RU2453419C2 (ru) 2012-06-20
WO2008064953A1 (fr) 2008-06-05
CN101541481B (zh) 2011-04-06
CN101541481A (zh) 2009-09-23

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