EP0221009A2 - Perceuse à percussion avec interruption de la rotation - Google Patents

Perceuse à percussion avec interruption de la rotation Download PDF

Info

Publication number
EP0221009A2
EP0221009A2 EP86810315A EP86810315A EP0221009A2 EP 0221009 A2 EP0221009 A2 EP 0221009A2 EP 86810315 A EP86810315 A EP 86810315A EP 86810315 A EP86810315 A EP 86810315A EP 0221009 A2 EP0221009 A2 EP 0221009A2
Authority
EP
European Patent Office
Prior art keywords
coupling sleeve
switching element
control cam
hammer drill
guide tube
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
EP86810315A
Other languages
German (de)
English (en)
Other versions
EP0221009B1 (fr
EP0221009A3 (en
Inventor
Anton Neumaier
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Publication of EP0221009A2 publication Critical patent/EP0221009A2/fr
Publication of EP0221009A3 publication Critical patent/EP0221009A3/de
Application granted granted Critical
Publication of EP0221009B1 publication Critical patent/EP0221009B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B25D2211/003—Crossed drill and motor spindles
    • 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
    • B25D2216/0046—Preventing rotation

Definitions

  • the invention relates to a hammer drill with an electropneumatic hammer mechanism, which has a guide cylinder that transmits a rotary movement to a tool, wherein a rotatable and axially immovable gearwheel that is constantly in engagement with the drive wheel is arranged on the guide cylinder, and a gearwheel that is non-rotatably connected to the guide tube by means of a housing-side switching member axially displaceable coupling sleeve can be engaged and disengaged with the gearwheel, the switching member being connectable to the coupling sleeve in the disengaged position.
  • rotary hammers are often also used for chiseling.
  • the rotary movement is switched off and the tool is only given axially directed blows.
  • To prevent the tool from being turned unintentionally it is known to lock the guide cylinder in a certain rotational position.
  • a rotation lock of the guide tube is also advantageous for changing the tool.
  • a known rotary hammer has a coupling sleeve which is axially displaceable on the guide tube and which is connected to the guide tube in a rotationally fixed manner.
  • the coupling sleeve is partially designed as a polygon on its outside.
  • the switching element cooperating with the coupling sleeve has the shape of an eccentric shaft and serves on the one hand to axially move the coupling sleeve and on the other hand to lock the coupling sleeve against rotation by contacting one of the key surfaces of the polygon.
  • the lockable rotary positions possible with this version are limited by the shape of the polygon of the coupling sleeve.
  • the invention has for its object to provide a hammer drill that allows locking of the guide tube in a variety of positions.
  • the switching element has a control cam which can be displaced normally to the direction of displacement of the coupling sleeve and which can be engaged in a latching opening on the coupling sleeve.
  • the control cam which can be inserted into the latching openings, provides a positive connection between the coupling sleeve and the switching element. This prevents an inadequate locking due to wear and tear and ensures the absorption of high forces.
  • the division of the locking openings can be freely chosen according to needs.
  • the switching element is expediently rotatable about an axis which runs normally to the direction of displacement of the coupling sleeve, and the control cam is designed as an eccentrically mounted pin.
  • a switching element that can be rotated normally to the direction of displacement of the coupling sleeve enables a large gear ratio and thus the application of larger switching forces with a relatively small manual force. With a suitable choice of the end positions, no additional rotation lock of the switching element is required.
  • the control cam designed as an eccentrically mounted pin can be slightly conical, so that any play due to wear is automatically compensated for.
  • the latching opening is advantageously arranged at the bottom of a groove extending on the circumference of the coupling sleeve.
  • the control cam has two functions. In a first phase, the control cam only engages in the groove and moves the coupling sleeve in the axial direction. In a second phase, the control cam can move radially into the latching opening at the bottom of the groove and thus forms the rotational lock of the coupling sleeve.
  • the diameter of the latching opening corresponds to the width of the groove.
  • the drill hammer shown in FIGS. 1 to 4 has a housing designated overall by 1.
  • the housing 1 is connected to a handle 2.
  • a feed line 3 opens into the handle 2.
  • a pusher 4 is used to switch the hammer on and off.
  • a tool holder 5 can be seen at the end of the housing 1 opposite the handle.
  • a motor pinion 6 is in mesh with a spur gear 7.
  • the spur gear 7 is rotatably connected to a bevel pinion 8.
  • the bevel pinion 8 is over a ball bearing 9 and a bearing bush 10 are mounted in the housing 1.
  • the motor pinion 6 is also in engagement with a spur gear 11.
  • the spur gear 11 is connected to a crankshaft, generally designated 12.
  • the crankshaft 12 is also mounted in the housing 1 via a ball bearing 13 and a bearing bush 14.
  • a guide tube denoted overall by 15, is mounted in the housing 1 via a radial bearing 16.
  • An excitation piston 17 is slidably guided in the guide tube 15.
  • the excitation piston 17 is connected to a crank pin 12a of the crankshaft 12 via a piston pin 18 and a connecting rod 19.
  • the excitation piston 17 also has a sealing ring 20.
  • a bevel gear, designated overall by 22, is rotatably mounted on the guide tube 15 via a needle bearing 21.
  • the bevel gear 22 is in constant engagement with the bevel pinion 8.
  • the bevel gear 22 is supported on the guide tube 15 in the axial direction via an axial bearing 23.
  • the guide tube 15 has a spline 15a, on which a coupling sleeve, designated overall by 24, is arranged to be axially displaceable.
  • the coupling sleeve 24 has claws 24a which can be brought into engagement with a toothing 22a of the bevel gear 22 and is also provided with a circumferential groove 24b and locking openings 24c arranged at the base of this groove 24b and extending in the radial direction.
  • a switching element, generally designated 25 is rotatably mounted normally to the direction of displacement of the coupling sleeve 24.
  • the switching element 25 has a control cam 25a projecting into the groove 24b and is pushed in the direction of the guide tube 15 by means of a compression spring 26.
  • the switching element 25 is connected to an actuating element, designated overall by 27.
  • the connection of the actuating member 27 to the switching member 25 takes place via a polygon 25b and a screw 28.
  • the actuating member 27 has a projection 27a which, depending on the rotational position of the switching member 25, engages with a locking groove 1a or a recess 1b on the housing 1.
  • the coupling sleeve 24 is displaced in the direction of the radial bearing 16.
  • the claws 24a of the coupling sleeve 24 come out of engagement with corresponding counterclaws on the bevel gear 22.
  • the transmission of the rotary movement is thus interrupted.
  • the projection 27a can engage in the recess 1b which is deeper than the locking groove 1a.
  • the control cam 25a on the switching element 25 can also engage in one of the latching openings 24c.
  • the guide tube 15 is thus locked via the coupling sleeve 24.
  • the top view of the housing 1 shown in FIG. 3 shows, with the omission of the actuating member 27, the diametrically opposite latching groove 1a and the recess 1b.
  • Fig. 4 shows the engagement of the projection 27a in the recess 1b.
  • the actuator 27 When the actuator 27 is rotated, it is raised by the oblique flanks on the projection 27a and the recess 1b and the projection 27a is thus disengaged from the recess 1b.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
EP86810315A 1985-10-26 1986-07-15 Perceuse à percussion avec interruption de la rotation Expired - Lifetime EP0221009B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853538166 DE3538166A1 (de) 1985-10-26 1985-10-26 Bohrhammer mit dreharretierung
DE3538166 1985-10-26

Publications (3)

Publication Number Publication Date
EP0221009A2 true EP0221009A2 (fr) 1987-05-06
EP0221009A3 EP0221009A3 (en) 1987-12-16
EP0221009B1 EP0221009B1 (fr) 1991-03-06

Family

ID=6284558

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86810315A Expired - Lifetime EP0221009B1 (fr) 1985-10-26 1986-07-15 Perceuse à percussion avec interruption de la rotation

Country Status (3)

Country Link
US (1) US4763733A (fr)
EP (1) EP0221009B1 (fr)
DE (2) DE3538166A1 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989011955A1 (fr) * 1988-06-04 1989-12-14 Robert Bosch Gmbh Marteau perforateur
EP0373106A3 (fr) * 1988-12-09 1991-05-08 HILTI Aktiengesellschaft Outil à main avec boíte d'engrenage
EP0437716A1 (fr) * 1990-01-13 1991-07-24 Robert Bosch Gmbh Outil à main entraîné électriquement
DE4009762A1 (de) * 1990-03-27 1991-10-02 Hilti Ag Meisselhammer
EP0463416A1 (fr) * 1990-06-26 1992-01-02 Robert Bosch Gmbh Foreuse à percussion électrique
EP0583710A1 (fr) * 1992-08-18 1994-02-23 Robert Bosch Gmbh Perceuse à percussion
EP0612588A1 (fr) * 1993-02-26 1994-08-31 Kress-elektrik GmbH + Co. Elektromotorenfabrik Dispositif de commande pour outils électriques
US5614141A (en) * 1990-09-28 1997-03-25 Daicel Chemical Industries, Ltd. Method of manufacturing laminated films
WO2008071484A1 (fr) * 2006-12-14 2008-06-19 Robert Bosch Gmbh Appareil électrique avec élément de commande rotatif à emboîtement
CN102248520A (zh) * 2011-06-14 2011-11-23 常熟市迅达粉末冶金有限公司 一种功能切换装置
CN106738384A (zh) * 2015-11-19 2017-05-31 付瑞兰 可调距离的切割机
US9873192B2 (en) 2013-12-11 2018-01-23 Black & Decker Inc. Rotary hammer

Families Citing this family (54)

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USD333767S (en) 1990-02-23 1993-03-09 Hitachi Koki Company, Limited Portable cordless hammer
DE4013512A1 (de) * 1990-04-27 1991-10-31 Black & Decker Inc Schalteinrichtung zum umschalten eines kraftgetriebenen werkzeugs
DE4135240A1 (de) * 1991-10-25 1993-04-29 Bosch Gmbh Robert Bohrhammer
DE4415348A1 (de) * 1994-05-02 1995-11-09 Hilti Ag Bohr- und Meisselgerät
DE19537492C1 (de) * 1995-09-25 1996-12-05 Siemens Ag Elektro-pneumatischer Stellungsregler
DE19640344C1 (de) * 1995-09-25 1998-03-12 Siemens Ag Elektro-pneumatischer Stellungsregler
DE19717712A1 (de) * 1997-04-18 1998-10-22 Black & Decker Inc Bohrhammer
US6138346A (en) * 1998-12-21 2000-10-31 Connectool Inc. Portable hand-held battery-powered crimping tool
US6223833B1 (en) 1999-06-03 2001-05-01 One World Technologies, Inc. Spindle lock and chipping mechanism for hammer drill
NL1014558C2 (nl) * 2000-03-03 2001-09-13 Skil Europ Bv Boormachine met grendelmechanisme.
DE10033100A1 (de) * 2000-07-07 2002-01-17 Hilti Ag Kombiniertes Elektrohandwerkzeuggerät
DE10111748A1 (de) * 2001-03-12 2002-09-19 Hilti Ag Schaltwerk für ein kombiniertes Handwerkzeuggerät
DE10205030A1 (de) * 2002-02-07 2003-08-21 Hilti Ag Betriebsmodi-Schalteinheit einer Handwerkzeugmaschine
DE10261030A1 (de) * 2002-12-24 2004-07-08 Robert Bosch Gmbh Bohrhammer
GB0311045D0 (en) * 2003-05-14 2003-06-18 Black & Decker Inc Rotary hammer
DE102004018084B3 (de) * 2004-04-08 2005-11-17 Hilti Ag Hammerbohrgerät
JP4509662B2 (ja) * 2004-06-16 2010-07-21 株式会社マキタ 電動打撃工具
JP4515181B2 (ja) * 2004-07-20 2010-07-28 株式会社マキタ 電動ハンマドリル
EP1674743B1 (fr) * 2004-12-23 2014-01-22 Black & Decker Inc. Mécanisme d'entraînement pour outil motorisé
EP1674207B1 (fr) * 2004-12-23 2008-12-10 BLACK & DECKER INC. Outil motorisé
GB2423050A (en) * 2005-02-10 2006-08-16 Black & Decker Inc Hammer with ramps causing pivotal oscillation
US7469752B2 (en) * 2005-12-02 2008-12-30 Makita Corporation Power tool
JP4686372B2 (ja) * 2006-02-01 2011-05-25 株式会社マキタ 衝撃式作業工具
JP4812471B2 (ja) * 2006-03-09 2011-11-09 株式会社マキタ 作業工具
US20080014844A1 (en) * 2006-07-17 2008-01-17 James Matthew Pontieri Power tool with spindle lock
JP2008183633A (ja) * 2007-01-26 2008-08-14 Makita Corp ハンマドリル
DE102007009986A1 (de) * 2007-03-02 2008-09-04 Robert Bosch Gmbh Handwerkzeugmaschine
US7854274B2 (en) * 2007-11-21 2010-12-21 Black & Decker Inc. Multi-mode drill and transmission sub-assembly including a gear case cover supporting biasing
US7717192B2 (en) 2007-11-21 2010-05-18 Black & Decker Inc. Multi-mode drill with mode collar
US7717191B2 (en) * 2007-11-21 2010-05-18 Black & Decker Inc. Multi-mode hammer drill with shift lock
US7770660B2 (en) 2007-11-21 2010-08-10 Black & Decker Inc. Mid-handle drill construction and assembly process
US7735575B2 (en) 2007-11-21 2010-06-15 Black & Decker Inc. Hammer drill with hard hammer support structure
US7798245B2 (en) * 2007-11-21 2010-09-21 Black & Decker Inc. Multi-mode drill with an electronic switching arrangement
US7762349B2 (en) 2007-11-21 2010-07-27 Black & Decker Inc. Multi-speed drill and transmission with low gear only clutch
JP5116029B2 (ja) * 2008-03-05 2013-01-09 株式会社マキタ ハンマードリル
CN201201225Y (zh) * 2008-05-20 2009-03-04 东莞群胜粉末冶金有限公司 冲击钻的冲击切换装置
DE102008054786A1 (de) * 2008-12-17 2010-07-01 Hilti Aktiengesellschaft Drehschalter
DE102009028633A1 (de) * 2009-08-19 2011-02-24 Robert Bosch Gmbh Vorrichtung für eine Handwerkzeugmaschine und Handwerkzeugmaschine
DE102010041259A1 (de) * 2010-09-23 2012-03-29 Robert Bosch Gmbh Handwerkzeugmaschinenschaltvorrichtung
DE102012208913A1 (de) 2012-05-25 2013-11-28 Robert Bosch Gmbh Schlagwerkeinheit
DE102012208902A1 (de) 2012-05-25 2013-11-28 Robert Bosch Gmbh Schlagwerkeinheit
DE102012209446A1 (de) * 2012-06-05 2013-12-05 Robert Bosch Gmbh Handwerkzeugmaschinenvorrichtung
US9630307B2 (en) 2012-08-22 2017-04-25 Milwaukee Electric Tool Corporation Rotary hammer
US9108312B2 (en) 2012-09-11 2015-08-18 Milwaukee Electric Tool Corporation Multi-stage transmission for a power tool
CN204686830U (zh) 2012-10-19 2015-10-07 米沃奇电动工具公司 锤钻
US9073182B2 (en) * 2012-10-31 2015-07-07 Mou-Tang Liou Screwing tool
US9573262B2 (en) * 2012-11-19 2017-02-21 Makita Corporation Impact tool
GB201413293D0 (en) * 2014-07-28 2014-09-10 Black & Decker Inc Mode change knob assembly
GB2531995A (en) * 2014-10-20 2016-05-11 Black & Decker Inc Pneumatic hammer
GB201421577D0 (en) * 2014-12-04 2015-01-21 Black & Decker Inc Drill
GB201421576D0 (en) 2014-12-04 2015-01-21 Black & Decker Inc Drill
CN108705490B (zh) * 2018-07-31 2023-12-29 浙江信普工贸有限公司 锤镐电动工具的锤档自锁装置
CN113474125B (zh) * 2019-03-28 2024-07-30 工机控股株式会社 冲击作业机
CN113814941B (zh) * 2021-07-23 2025-04-11 江苏东成工具科技有限公司 冲击工具

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DE2122582C3 (de) * 1971-05-07 1980-01-10 Robert Bosch Gmbh, 7000 Stuttgart Von Hand geführte Drehschlagbohrmaschine
DE2136523C3 (de) * 1971-07-21 1983-11-03 Hilti AG, 9494 Schaan Elektrobohrhammer
CH534036A (de) * 1972-04-18 1973-02-28 Rudolf Studer Fabrik Elek Sche Motorisch, insbesondere durch Elektromotor, angetriebener Schlagbohrhammer
US3845826A (en) * 1973-02-23 1974-11-05 Skil Corp Rotary disconnect for a rotary hammer tool
US3837409A (en) * 1973-02-26 1974-09-24 Skil Corp Rotary hammer power tool
US3876014A (en) * 1974-02-07 1975-04-08 Black & Decker Mfg Co Rotary hammer with rotation stop control trigger
DE2728961C2 (de) * 1977-06-27 1991-08-08 Hilti Ag, Schaan Bohrhammer mit arretierbarem Werkzeughalter
GB2102718B (en) * 1981-07-24 1985-08-14 Black & Decker Inc Improvements in or relating to rotary percussive drills
GB2121717B (en) * 1982-06-02 1985-09-18 Black & Decker Inc Improvements in or relating to rotary percussive drills

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989011955A1 (fr) * 1988-06-04 1989-12-14 Robert Bosch Gmbh Marteau perforateur
EP0373106A3 (fr) * 1988-12-09 1991-05-08 HILTI Aktiengesellschaft Outil à main avec boíte d'engrenage
EP0437716A1 (fr) * 1990-01-13 1991-07-24 Robert Bosch Gmbh Outil à main entraîné électriquement
DE4009762A1 (de) * 1990-03-27 1991-10-02 Hilti Ag Meisselhammer
EP0463416A1 (fr) * 1990-06-26 1992-01-02 Robert Bosch Gmbh Foreuse à percussion électrique
US5614141A (en) * 1990-09-28 1997-03-25 Daicel Chemical Industries, Ltd. Method of manufacturing laminated films
EP0583710A1 (fr) * 1992-08-18 1994-02-23 Robert Bosch Gmbh Perceuse à percussion
EP0612588A1 (fr) * 1993-02-26 1994-08-31 Kress-elektrik GmbH + Co. Elektromotorenfabrik Dispositif de commande pour outils électriques
WO2008071484A1 (fr) * 2006-12-14 2008-06-19 Robert Bosch Gmbh Appareil électrique avec élément de commande rotatif à emboîtement
CN102248520A (zh) * 2011-06-14 2011-11-23 常熟市迅达粉末冶金有限公司 一种功能切换装置
US9873192B2 (en) 2013-12-11 2018-01-23 Black & Decker Inc. Rotary hammer
CN106738384A (zh) * 2015-11-19 2017-05-31 付瑞兰 可调距离的切割机
CN106738383A (zh) * 2015-11-19 2017-05-31 付瑞兰 间距可调式切割机
CN106808605A (zh) * 2015-11-19 2017-06-09 付瑞兰 距离可调式切割机
CN106926371A (zh) * 2015-11-19 2017-07-07 付瑞兰 距离可调的切割机

Also Published As

Publication number Publication date
DE3677889D1 (de) 1991-04-11
EP0221009B1 (fr) 1991-03-06
US4763733A (en) 1988-08-16
DE3538166A1 (de) 1987-04-30
EP0221009A3 (en) 1987-12-16

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