EP1834736A1 - Outil à main électrique - Google Patents

Outil à main électrique Download PDF

Info

Publication number
EP1834736A1
EP1834736A1 EP06005591A EP06005591A EP1834736A1 EP 1834736 A1 EP1834736 A1 EP 1834736A1 EP 06005591 A EP06005591 A EP 06005591A EP 06005591 A EP06005591 A EP 06005591A EP 1834736 A1 EP1834736 A1 EP 1834736A1
Authority
EP
European Patent Office
Prior art keywords
spindle
pressure piece
cam
hand tool
electric hand
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
EP06005591A
Other languages
German (de)
English (en)
Other versions
EP1834736B1 (fr
Inventor
Günter Dipl.-Ing. Stark
Mathias Naumann
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.)
Metabowerke GmbH and Co
Original Assignee
Metabowerke GmbH and Co
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 Metabowerke GmbH and Co filed Critical Metabowerke GmbH and Co
Priority to EP06005591A priority Critical patent/EP1834736B1/fr
Priority to AT06005591T priority patent/ATE408479T1/de
Priority to DE502006001594T priority patent/DE502006001594D1/de
Priority to US11/711,707 priority patent/US20070215369A1/en
Priority to CN2007100886968A priority patent/CN101036983B/zh
Publication of EP1834736A1 publication Critical patent/EP1834736A1/fr
Application granted granted Critical
Publication of EP1834736B1 publication Critical patent/EP1834736B1/fr
Priority to US12/318,681 priority patent/US8327948B2/en
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
    • B25D11/00—Portable percussive tools with electromotor or other motor drive
    • B25D11/06—Means for driving the impulse member
    • B25D11/10—Means for driving the impulse member comprising a cam mechanism
    • B25D11/102—Means for driving the impulse member comprising a cam mechanism the rotating axis of the cam member being coaxial with the axis of the tool
    • B25D11/106—Means for driving the impulse member comprising a cam mechanism the rotating axis of the cam member being coaxial with the axis of the tool cam member and cam follower having the same shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D11/00—Portable percussive tools with electromotor or other motor drive
    • B25D11/005—Arrangements for adjusting the stroke of the impulse member or for stopping the impact action when the tool is lifted from the working surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D2216/0007—Details of percussion or rotation modes
    • B25D2216/0023—Tools having a percussion-and-rotation mode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D2216/0007—Details of percussion or rotation modes
    • B25D2216/0038—Tools having a rotation-only mode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/005—Adjustable tool components; Adjustable parameters
    • B25D2250/021—Stroke length
    • 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
    • B25D2250/045—Cams used in percussive tools
    • 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
    • B25D2250/371—Use of springs

Definitions

  • the invention relates to an electric hand tool, in particular hammer drill or rotary hammer with a drivable by a drive motor spindle which cooperates at its one end with its tool holder, and a striker for axially moving the spindle in an impact position, wherein an adjusting device for adjusting the spindle between the impact position and a rotational position is provided.
  • Such a hand drill with a device for switching the operating modes drilling and impact drilling is for example from the EP 0 755 756 B1 previously known, wherein here the drill spindle is supported in the Drehbohr memoriswolf against a thrust bearing, which is designed as a rolling bearing and the adjusting member acts on this bearing on the drill spindle.
  • a corresponding drill is, for example, from EP 0 399 714 B1 previously known, which discloses a power drill having a mode change mechanism for changing the operating state of the drill between a no-hammer mode and a percussion mode, the mode change mechanism including a first rigid and a second elastic members.
  • the adjusting device comprises a switching ring arranged on the spindle, which has curve arrangements on both end faces, wherein one of the cam arrangements is engageable by turning the switching ring in a housing-fixed corresponding cam arrangement and the second cam arrangement is engageable with a corresponding cam arrangement of an axially movable on the spindle pressure piece for adjusting the impact device in an impact position.
  • the spindle can perform an axial movement, which is blocked by the abutment of the cam assemblies in the unengaged state by the intermeshing of the switching ring in the region of its curve arrangement with a housing-fixed cam arrangement.
  • a further axial movement is made possible by the fact that the pressure piece dips with its curve arrangement in a second curve arrangement of the switching ring, thus enabling a double axial stroke of the spindle.
  • the pressure piece cooperates with a spring which loads the pressure piece away from the switching ring. That is, in the normal basic position, the cams of pressure piece and switching ring are disengaged. If, for example, a corresponding percussion drill is attached to a workpiece to be machined with a drill, then the spindle is loaded axially against the spring force and moves in the axial direction so far that, on the one hand, the control cams of the impact device engage with one another and, on the other hand, the cam arrangements dive between switching ring and pressure piece in each other, so that with appropriately switched electric hand tool a blow or Schlagbohr memori is possible because the spindle can be moved axially.
  • the spindle is no longer axially loaded, for example, by the electric hand tool device is removed from the workpiece, so there is no further beating movement of the spindle. In this way, a considerably easier holding a suitably equipped electric hand tool device can be made possible.
  • the pressure piece is supported with its opposite side of the curve arrangement against a thrust bearing of the spindle.
  • the thrust bearing serves to guide the spindle in the rotational position.
  • the pressure piece is guided in a slotted guide, so that no rotation of the pressure piece is possible, but the pressure piece can only perform a purely translational movement with respect to the housing.
  • a slide switch is provided as a switch for the adjusting device, which is provided on the outside of a housing of the electric hand tool device, which may be in particular a radial sliding movement, by which a twisting of the switching ring.
  • Figure 1 shows a portion of an electric hand tool device comprising a spindle 10 with a receptacle 12 for a tool holder, wherein the spindle via a gear 14 and an electric motor connected thereto (not shown) can be driven.
  • the spindle is rotatably mounted in a machine housing 16 by means of the bearings 18, 20 and 22nd
  • the electric hand tool device now comprises a striking mechanism, which is provided in its entirety by the reference numeral 24.
  • the hammer mechanism 24 has essentially two elements, namely the component 26 with a first control cam 28 and a racket 30 with a second control curve 32.
  • the two control cams 28 and 32 of the components 26 and 30 are directed towards each other.
  • the component 26 is in this case pressed onto the spindle 10 and is in the axial direction against a stop 34.
  • the component 26 rotates with the spindle and is axially fixed on this.
  • the racket is axially movable relative to the spindle 10, but can not rotate relative to the housing 16.
  • the racket 30 is guided in a racket housing 36, which is inserted into the machine housing 16 and fixed here.
  • a spring 40 is also guided, which is supported with its one side against the racket 30 and with its other side against the racket housing 36 and biases it.
  • Figure 1 shows an embodiment in which the control cams 28 and 32 are not engaged with each other. In this position, only a rotational movement of a tool clamped in a tool holder takes place without any axial impact movement of the spindle 10 being performed.
  • the cams are designed so that at least one of the control cams has a control cam, which protrudes in the direction of the other control cam in the axial direction over the rest of the control cam.
  • ramps are provided, which allow sliding of the two cams on each other and thus allow a detent provided on one or both of the control cams control cam. Between the two control cam so-called valleys are arranged in each case.
  • the racket 30 strikes with a predetermined energy to the component 26 and moves it in the axial direction in the direction of the end 12 of the spindle 10. Since the component 26 is fixed to the spindle 10 and in particular abuts against the stop 34 is moved together with the component 26, the spindle 10 in the axial direction. In this way, a stroke of the spindle and a percussion drilling operation can be provided, which supports a drilling operation.
  • an adjusting device which is provided in its entirety by the reference numeral 42, provided on the opposite end of the tool holder spindle end.
  • the adjusting device 42 in this case comprises an adjusting member, not shown, in particular a sliding switch in the radial direction, is initiated and performed by an operator of the switching operation.
  • a switching ring 44 which has on its two end faces curve arrangements 46 and 48, relative to the housing moved radially, whereby the cam assembly 46 is engageable with a cam assembly on a housing-fixed member 50, whose cam assembly is denoted by 52.
  • the cam assemblies 46 and 50 are shown disengaged.
  • FIG. 2 now shows the mutually engaged cam arrangements 46 and 50 of the switching ring and of the housing-fixed component 50.
  • the adjusting device 42 comprises a pressure piece 54, which abuts against the axial bearing 20, which supports the spindle 10 in rotary operation, via a spring 56.
  • the pressure piece 54 is pressed in the direction of the percussion mechanism 24, so that in the basic position, the striking mechanism is in a position in which the control cams 28 and 32 are disengaged.
  • the pressure piece 54 is guided on a slotted guide in such a way that it can perform a merely translatory movement with respect to the housing 16. In this way it is achieved that, if the user of a corresponding electric hand tool device, the device of lifts a workpiece to be machined, the pressure on the springs 56 and 40 decreases and there is a rebound and so no further impact movement of the spindle is performed.
  • the stroke can be increased with the same operation of a slide switch.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling And Boring (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Surgical Instruments (AREA)
EP06005591A 2006-03-18 2006-03-18 Outil à main électrique Not-in-force EP1834736B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP06005591A EP1834736B1 (fr) 2006-03-18 2006-03-18 Outil à main électrique
AT06005591T ATE408479T1 (de) 2006-03-18 2006-03-18 Elektrohandwerkzeuggerät
DE502006001594T DE502006001594D1 (de) 2006-03-18 2006-03-18 Elektrohandwerkzeuggerät
US11/711,707 US20070215369A1 (en) 2006-03-18 2007-02-28 Electrical hand tool device
CN2007100886968A CN101036983B (zh) 2006-03-18 2007-03-16 手持式电动工具机
US12/318,681 US8327948B2 (en) 2006-03-18 2009-01-06 Electrical hand tool device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06005591A EP1834736B1 (fr) 2006-03-18 2006-03-18 Outil à main électrique

Publications (2)

Publication Number Publication Date
EP1834736A1 true EP1834736A1 (fr) 2007-09-19
EP1834736B1 EP1834736B1 (fr) 2008-09-17

Family

ID=36778084

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06005591A Not-in-force EP1834736B1 (fr) 2006-03-18 2006-03-18 Outil à main électrique

Country Status (5)

Country Link
US (2) US20070215369A1 (fr)
EP (1) EP1834736B1 (fr)
CN (1) CN101036983B (fr)
AT (1) ATE408479T1 (fr)
DE (1) DE502006001594D1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008064511B4 (de) 2008-12-22 2011-07-21 Metabowerke GmbH, 72622 Schlagbohrmaschine
US8636081B2 (en) 2011-12-15 2014-01-28 Milwaukee Electric Tool Corporation Rotary hammer
DE102010041045A1 (de) * 2010-09-20 2012-03-22 Robert Bosch Gmbh Handwerkzeugmaschine, insbesondere Schlagbohrmaschine
EP2809470B1 (fr) 2012-02-03 2020-01-15 Milwaukee Electric Tool Corporation Marteau rotatif

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1164927A (fr) * 1957-01-17 1958-10-15 Friedrich Muthmann Perceuse à percussion actionnée électriquement, notamment pour percer de la pierre, de la terre et des matières synthétiques
GB1031648A (en) * 1964-04-14 1966-06-02 John M Perkins & Smith Ltd Portable drilling machines
CH526374A (de) * 1970-04-24 1972-08-15 Perles Elektrowerkzeuge Und Mo Schlagbohrmaschine
US3866692A (en) * 1973-02-02 1975-02-18 Rockwell International Corp Power tools
US4158970A (en) * 1977-06-15 1979-06-26 Black & Decker Inc. Override arrangement and actuating knob for a shifting mechanism in portable tools
EP0437060A2 (fr) * 1990-01-09 1991-07-17 Black & Decker Inc. Outil rotatif motorisé à double mode d'opération
EP0399714B1 (fr) 1989-05-25 1994-07-27 Black & Decker Inc. Machines à forer
EP0755756A2 (fr) * 1995-07-25 1997-01-29 Metabowerke GmbH & Co. Perçeuse portative avec dispositif de commutation entre un mode de fonctionnement "forage" et un mode "forage à percussion"
US20050194164A1 (en) * 2004-03-05 2005-09-08 Hitachi Koki Co., Ltd. Impact drill

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2228402Y (zh) * 1995-07-19 1996-06-05 赵占国 便携式电动冲击铲
US6142242A (en) * 1999-02-15 2000-11-07 Makita Corporation Percussion driver drill, and a changeover mechanism for changing over a plurality of operating modes of an apparatus
DE10059388A1 (de) * 2000-11-30 2002-06-13 Bosch Gmbh Robert Handwerkzeugmaschine
US7101300B2 (en) * 2001-01-23 2006-09-05 Black & Decker Inc. Multispeed power tool transmission
JP4227028B2 (ja) * 2004-01-09 2009-02-18 株式会社マキタ ドライバドリル
US7308948B2 (en) * 2004-10-28 2007-12-18 Makita Corporation Electric power tool
US7410007B2 (en) * 2005-09-13 2008-08-12 Eastway Fair Company Limited Impact rotary tool with drill mode
US7980324B2 (en) * 2006-02-03 2011-07-19 Black & Decker Inc. Housing and gearbox for drill or driver

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1164927A (fr) * 1957-01-17 1958-10-15 Friedrich Muthmann Perceuse à percussion actionnée électriquement, notamment pour percer de la pierre, de la terre et des matières synthétiques
GB1031648A (en) * 1964-04-14 1966-06-02 John M Perkins & Smith Ltd Portable drilling machines
CH526374A (de) * 1970-04-24 1972-08-15 Perles Elektrowerkzeuge Und Mo Schlagbohrmaschine
US3866692A (en) * 1973-02-02 1975-02-18 Rockwell International Corp Power tools
US4158970A (en) * 1977-06-15 1979-06-26 Black & Decker Inc. Override arrangement and actuating knob for a shifting mechanism in portable tools
EP0399714B1 (fr) 1989-05-25 1994-07-27 Black & Decker Inc. Machines à forer
EP0437060A2 (fr) * 1990-01-09 1991-07-17 Black & Decker Inc. Outil rotatif motorisé à double mode d'opération
EP0755756A2 (fr) * 1995-07-25 1997-01-29 Metabowerke GmbH & Co. Perçeuse portative avec dispositif de commutation entre un mode de fonctionnement "forage" et un mode "forage à percussion"
EP0755756B1 (fr) 1995-07-25 2000-01-05 Metabowerke GmbH & Co. Perçeuse portative avec dispositif de commutation entre un mode de fonctionnement "forage" et un mode "forage à percussion"
US20050194164A1 (en) * 2004-03-05 2005-09-08 Hitachi Koki Co., Ltd. Impact drill

Also Published As

Publication number Publication date
US20070215369A1 (en) 2007-09-20
US20090126959A1 (en) 2009-05-21
EP1834736B1 (fr) 2008-09-17
US8327948B2 (en) 2012-12-11
ATE408479T1 (de) 2008-10-15
DE502006001594D1 (de) 2008-10-30
CN101036983A (zh) 2007-09-19
CN101036983B (zh) 2013-01-23

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