EP1790434A1 - Outil à main électrique avec dispositif d'accouplement rapide - Google Patents

Outil à main électrique avec dispositif d'accouplement rapide Download PDF

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Publication number
EP1790434A1
EP1790434A1 EP05025876A EP05025876A EP1790434A1 EP 1790434 A1 EP1790434 A1 EP 1790434A1 EP 05025876 A EP05025876 A EP 05025876A EP 05025876 A EP05025876 A EP 05025876A EP 1790434 A1 EP1790434 A1 EP 1790434A1
Authority
EP
European Patent Office
Prior art keywords
hollow shaft
clamping
tool
bolt
tool according
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
EP05025876A
Other languages
German (de)
English (en)
Other versions
EP1790434B1 (fr
Inventor
Martin Baumann
Jürgen Bilckle
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 AT05025876T priority Critical patent/ATE389510T1/de
Priority to DE502005003376T priority patent/DE502005003376D1/de
Priority to EP05025876A priority patent/EP1790434B1/fr
Publication of EP1790434A1 publication Critical patent/EP1790434A1/fr
Application granted granted Critical
Publication of EP1790434B1 publication Critical patent/EP1790434B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B24B23/022—Spindle-locking devices, e.g. for mounting or removing the tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B45/00—Means for securing grinding wheels on rotary arbors
    • B24B45/006—Quick mount and release means for disc-like wheels, e.g. on power tools

Definitions

  • Such an electric hand tool device is, for example, in DE 100 39 739 A1 described.
  • the clamping force is applied by a provided inside the hollow shaft compression spring, which is supported between an inner collar of the hollow shaft and a piston means in the interior of the hollow shaft.
  • the piston means has a threaded bore extending in the longitudinal direction of the sleeve into which the previously mentioned bolt can be screwed.
  • About said clamping lever and a cam mentioned piston means can be pressed against the spring force together with the bolt screwed therein down, so that the clamping flange is released on the bolt of the clamping flange on the hollow shaft.
  • the present invention is based on the object to improve a tool device of the type mentioned in terms of a simple, yet safe construction of a quick-release device.
  • the hollow shaft has at least one window-like opening in which a clamping body is arranged, and that the clamping body against the inside and against the pin against a spring-loaded inclined surface can be applied, so that the bolt on the clamping body in consequence of Spring load of the inclined surface is clamped in the hollow shaft and thereby held in the hollow shaft.
  • clamping bodies are therefore used directly for transmitting a clamping force or clamping force to the bolt.
  • the bolt transmits this clamping force via its clamping flange on the tool.
  • By the clamp body of the bolt is forced in the axial direction.
  • a particular advantage of the embodiment of the quick-release device according to the invention is the fact that it adjusts itself almost automatically to different thicknesses of the tool, that is to say in particular different sawing, grinding, cutting or roughing wheel thicknesses.
  • the tool is positioned on the clamping flange of the hollow shaft and then simply needs the bolt to be inserted into the hollow shaft until its clamping flange rests snugly on the surface of the tool.
  • the mentioned spring-loaded inclined surface forces the clamping body against the bolt and generates and transmits in this way a clamping force on the bolt.
  • the inclined surface is oriented and spring-loaded in such a way that a force directed in the insertion direction of the bolt is transmitted to the clamping body or the bolt via the clamping body. It is understood that preferably two such window-like receptacles and clamping body and spring-loaded inclined surfaces are provided.
  • window-like opening is advantageously formed elongated hole-shaped or elongated in the longitudinal direction of the hollow shaft, so a corresponding travel can be realized.
  • the window-like opening can be made by milling transverse to the longitudinal direction of the hollow shaft in a simple manner.
  • the mentioned inclined surface could be formed per se of any construction elements, in particular of longitudinally or transversely displaceable wedge-shaped bodies. It turns out in development of the invention, however, to be particularly advantageous if the Inclined surface of a hollow shaft surrounding in the circumferential direction body, in particular is formed with a cylindrical basic geometry. This body then preferably has a longitudinally extending cylindrical bore, which corresponds substantially to the outer diameter of the hollow shaft, so that the body can be slid over the hollow shaft on this.
  • the aforementioned inclined surface in the body can be advantageously formed by a free-milling dipping into the body transversely to the longitudinal direction of the hollow shaft.
  • the bolt has a complementary shape to the shape of the clamping body formed surface shape, over a longitudinal extent which is greater than the window-like opening in the hollow shaft. In this way, it is possible that the quick-clamping device can automatically adjust to different thicknesses of the tool.
  • the clamping body has a diameter which is 0.5 to 8 times the wall thickness of the hollow shaft in this area.
  • the tensioning lever is in a preferred embodiment of the power tool according to the invention an eccentric lever which is pivotable about a fixed axis relative to the housing and rolls against a cam which indirectly or directly displaces the spring-loaded inclined surface against its spring bias.
  • the clamping body is brought out of clamping position, and the bolt can be pulled out of the hollow shaft.
  • the bolt need not be screwed or unscrewed; no screwing in or unscrewing movements has to be carried out.
  • the bolt is only inserted into the hollow shaft until it fits snugly against the surface of the tool, the tool thickness is automatically accommodated. Accordingly, the bolt for disassembly of the tool needs to be pulled out of the hollow shaft again in the axial direction after loosening the clamping body.
  • the spring preload of the inclined surface can take place in any desired manner in that one spring is supported at one end relative to an abutment provided on the hollow shaft and at the other end the oblique surface or a body forming the inclined surface is loaded. It proves to be advantageous if the inclined surface is loaded by a plate spring package, which surrounds the hollow shaft in particular concentric and is supported at one end against the hollow shaft. The disc spring assembly can then be supported in a structurally simple manner against a collar on the outside of the hollow shaft or against radially projecting projections on the hollow shaft.
  • Figure 1 shows a generally designated by the reference numeral 2 quick-clamping device in a tool device, in particular hand tool, with a planar tool 4, for example in the form of a cutting disc, grinding disc or grinding wheel or a saw blade.
  • the tool device is indicated only by a housing 6.
  • the quick-clamping device 2 comprises a clamping lever 8 which is pivotable about a housing-fixed axis 10 between a clamping position assumed in FIG. 1 and a release position shown by the arrow 12.
  • the quick-clamping device 2 comprises a hollow shaft 14 with a clamping flange 16 and a bolt 18 with a clamping flange 20-
  • the bolt 18 can be inserted in the longitudinal direction 22 of the hollow shaft 14 in this.
  • the hollow shaft in the illustrated exemplary case, two window-like openings 28 which are introduced transversely to the longitudinal direction 22 in the hollow shaft 14.
  • a roller-shaped or roller-shaped clamping body 30 is arranged in each case, whose roller diameter is greater than the wall thickness of the hollow shaft 14.
  • the respective clamping body 30 is therefore in the interior 32 of the hollow shaft 14 and outwardly of the hollow shaft fourteenth in front.
  • the respective clamping body cooperates on the outside with a respective inclined surface 34, which is inclined to the longitudinal direction 22 of the hollow shaft 14.
  • the plate spring package 40 is supported against a merely schematically indicated abutment 42 on the outer circumference of the hollow shaft 14 from.
  • the clamping body 30 - with inserted pin 18 - pressed against the outer surface of the bolt 18 and pull the bolt 18 while in the direction of arrow 44, so that its clamping flange 20 against the clamping flange 16 the hollow shaft 14 is forced. In this way, the tool 4 between the clamping flanges 16, 20 holding clamping force is generated and maintained.
  • a directly or indirectly acted upon by the clamping lever 8 actuator 46 in the example shown in the form of a cup-shaped geometry body provided, which is designed to be displaceable in the longitudinal direction 22 and in the direction of the clamping lever 8 by a per se any spring means 48 is biased. If the clamping lever 8 is pivoted starting from the position shown in Figure 1 in the direction of arrow 12 in the release position, the eccentric clamping lever presses the actuator 46 in the longitudinal direction 22 against the arrow 44 down until the actuator after a certain travel against the body 36th starts and this also moves against the action of the plate spring package 40 down. As a result, but reach the clamping body 30 except clamping position and the bolt 18 can be performed without a screwing movement, are pulled down from the hollow shaft 14.
  • the tool 4 can then be replaced with a new one.
  • the bolt 18 is again inserted into the hollow shaft 14, and for clamping the newly inserted tool, the clamping lever 8 is moved back into the position shown in Figure 1.
  • the body 36 is moved in the direction of Adjusted arrow 44, whereby the clamping body 30 are forced back into clamping position.
  • the actuator 46 is finally lifted under the action of the spring means 48 of the body 36 located in its Klemmend ein and moved back into the starting position shown in Figure 1.
  • the spring means 48 could of course also be provided a different positive coupling between clamping lever and actuator. It would also be conceivable that the tensioning lever acts directly on the adjusting element 46 via suitable eccentric areas.
  • the tool device is then further designed so that the described components consisting of hollow shaft 14, body 36 with inclined surfaces 34, including plate spring package 40 and pin 18 are driven in rotation or oscillating.
  • a drive gearwheel to be seated on the hollow shaft 14 but not shown in the schematic representation of FIG. Only indicated is a radial bearing 50.
  • Figure 2 again shows schematically a perspective view of hollow shaft 14 with plugged in bolt 18 and body 36 with inclined surfaces 34 and clamping bodies 30. Further indicated is the disc spring package 40.
  • window-like openings 28 which are introduced by free grooves from radially outside into the hollow shaft 14 are.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)
  • Clamps And Clips (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
EP05025876A 2005-11-28 2005-11-28 Outil à main électrique avec dispositif d'accouplement rapide Active EP1790434B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT05025876T ATE389510T1 (de) 2005-11-28 2005-11-28 Werkzeuggerät mit schnellspanneinrichtung
DE502005003376T DE502005003376D1 (de) 2005-11-28 2005-11-28 Werkzeuggerät mit Schnellspanneinrichtung
EP05025876A EP1790434B1 (fr) 2005-11-28 2005-11-28 Outil à main électrique avec dispositif d'accouplement rapide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05025876A EP1790434B1 (fr) 2005-11-28 2005-11-28 Outil à main électrique avec dispositif d'accouplement rapide

Publications (2)

Publication Number Publication Date
EP1790434A1 true EP1790434A1 (fr) 2007-05-30
EP1790434B1 EP1790434B1 (fr) 2008-03-19

Family

ID=35510994

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05025876A Active EP1790434B1 (fr) 2005-11-28 2005-11-28 Outil à main électrique avec dispositif d'accouplement rapide

Country Status (3)

Country Link
EP (1) EP1790434B1 (fr)
AT (1) ATE389510T1 (fr)
DE (1) DE502005003376D1 (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2371487A1 (fr) * 2010-03-30 2011-10-05 Monti-Werkzeuge Gmbh Dispositif d'outil rotatif entraîné de manière rotative
GB2486293A (en) * 2010-12-07 2012-06-13 Chervon Hk Ltd Power tool quick clamping device
WO2012089642A2 (fr) * 2010-12-30 2012-07-05 Robert Bosch Gmbh Dispositif de serrage de machine-outil portative
WO2013065614A1 (fr) * 2011-11-01 2013-05-10 株式会社マキタ Outil de travail
US20150042052A1 (en) * 2012-02-03 2015-02-12 Makita Corporation Work tool
US20160045998A1 (en) * 2011-05-18 2016-02-18 Chervon Intellectual Property Limited Power tool
US20160221088A1 (en) * 2015-02-02 2016-08-04 Makita Corporation Power tool
WO2018072995A1 (fr) * 2016-10-18 2018-04-26 Robert Bosch Gmbh Dispositif de fixation rapide pour machine-outil portative, en particulier une meuleuse d'angle, dotée d'au moins arbre de sortie susceptible d'être entraîné en rotation
WO2018072997A1 (fr) * 2016-10-18 2018-04-26 Robert Bosch Gmbh Dispositif de fixation rapide pour machine-outil portative, en particulier une meuleuse d'angle dotée d'au moins arbre de sortie susceptible d'être entraîné en rotation
US20200230776A1 (en) * 2017-04-12 2020-07-23 Robert Bosch Gmbh Grinding Means Device, in particular Grinding-Disc Device or Backup-Pad Device
US11364545B2 (en) 2019-12-26 2022-06-21 Makita Corporation Power tool
US11590593B2 (en) 2019-11-28 2023-02-28 Makita Corporation Power tool
US11660690B2 (en) 2019-11-28 2023-05-30 Makita Corporation Power tool
US11772171B2 (en) 2020-02-13 2023-10-03 Makita Corporation Power tool

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7096032B2 (ja) 2018-03-28 2022-07-05 株式会社マキタ マルチツール

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0231500A2 (fr) 1986-02-05 1987-08-12 Robert Bosch Gmbh Dispositif de fixation démontable d'un outil en forme de disque
US5157873A (en) * 1991-01-16 1992-10-27 C. & E. Fein Gmbh & Co. Portable grinder with quick-acting chucking device
DE4426969A1 (de) 1994-07-29 1996-02-01 Bosch Gmbh Robert Handwerkzeugmaschine mit einer ein scheibenförmiges, lösbar befestigtes Werkzeug tragenden Arbeitsspindel
US5601483A (en) * 1993-10-27 1997-02-11 C. & E. Fein Gmbh & Co. Power tool
DE10039739A1 (de) 2000-08-16 2002-02-28 C & E Fein Gmbh & Co Kg Elektrowerkzeug mit Schnellspanneinrichtung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0231500A2 (fr) 1986-02-05 1987-08-12 Robert Bosch Gmbh Dispositif de fixation démontable d'un outil en forme de disque
US5157873A (en) * 1991-01-16 1992-10-27 C. & E. Fein Gmbh & Co. Portable grinder with quick-acting chucking device
US5601483A (en) * 1993-10-27 1997-02-11 C. & E. Fein Gmbh & Co. Power tool
DE4426969A1 (de) 1994-07-29 1996-02-01 Bosch Gmbh Robert Handwerkzeugmaschine mit einer ein scheibenförmiges, lösbar befestigtes Werkzeug tragenden Arbeitsspindel
DE10039739A1 (de) 2000-08-16 2002-02-28 C & E Fein Gmbh & Co Kg Elektrowerkzeug mit Schnellspanneinrichtung

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2371487A1 (fr) * 2010-03-30 2011-10-05 Monti-Werkzeuge Gmbh Dispositif d'outil rotatif entraîné de manière rotative
GB2486293A (en) * 2010-12-07 2012-06-13 Chervon Hk Ltd Power tool quick clamping device
GB2486293B (en) * 2010-12-07 2014-04-02 Chervon Hk Ltd Power tool
WO2012089642A2 (fr) * 2010-12-30 2012-07-05 Robert Bosch Gmbh Dispositif de serrage de machine-outil portative
WO2012089642A3 (fr) * 2010-12-30 2012-08-23 Robert Bosch Gmbh Dispositif de serrage de machine-outil portative
US20160045998A1 (en) * 2011-05-18 2016-02-18 Chervon Intellectual Property Limited Power tool
US9764444B2 (en) * 2011-05-18 2017-09-19 Chervon (Hk) Limited Power tool
WO2013065614A1 (fr) * 2011-11-01 2013-05-10 株式会社マキタ Outil de travail
US20150042052A1 (en) * 2012-02-03 2015-02-12 Makita Corporation Work tool
US9545699B2 (en) * 2012-02-03 2017-01-17 Makita Corporation Work tool
US10058926B2 (en) * 2015-02-02 2018-08-28 Makita Corporation Power tool
US20160221088A1 (en) * 2015-02-02 2016-08-04 Makita Corporation Power tool
CN109843486A (zh) * 2016-10-18 2019-06-04 罗伯特·博世有限公司 用于具有至少一个可旋转地驱动的从动轴的便携式工具机、尤其是角磨机的快速夹紧装置
RU2748674C2 (ru) * 2016-10-18 2021-05-28 Роберт Бош Гмбх Быстрозажимное устройство для переносной технологической машины, имеющей по меньшей мере один приводимый во вращение выходной вал, в частности угловой шлифовальной машины
WO2018072995A1 (fr) * 2016-10-18 2018-04-26 Robert Bosch Gmbh Dispositif de fixation rapide pour machine-outil portative, en particulier une meuleuse d'angle, dotée d'au moins arbre de sortie susceptible d'être entraîné en rotation
CN109862998A (zh) * 2016-10-18 2019-06-07 罗伯特·博世有限公司 用于具有至少一个可旋转地驱动的从动轴的便携式工具机、尤其是角磨机的快速夹紧装置
KR20190071711A (ko) * 2016-10-18 2019-06-24 로베르트 보쉬 게엠베하 회전 구동 가능한 적어도 하나의 출력 샤프트를 구비한 휴대용 전동 공구, 특히 앵글 그라인더용 퀵 클램핑 장치
KR20190071709A (ko) * 2016-10-18 2019-06-24 로베르트 보쉬 게엠베하 적어도 하나의 회전 구동 가능한 출력 샤프트를 구비한 휴대용 전동 공구, 특히 앵글 그라인더용 퀵 클램핑 장치
JP2019533581A (ja) * 2016-10-18 2019-11-21 ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツングＲｏｂｅｒｔ Ｂｏｓｃｈ Ｇｍｂｈ クイッククランプ装置、及び、持運び可能な工作機械
JP2019534798A (ja) * 2016-10-18 2019-12-05 ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツングＲｏｂｅｒｔ Ｂｏｓｃｈ Ｇｍｂｈ クイッククランプ装置、及び、持運び可能な工作機械
US11890720B2 (en) 2016-10-18 2024-02-06 Robert Bosch Gmbh Quick clamping device for a portable power tool having at least one rotatably drivable output shaft, in particular an angle grinder
WO2018072997A1 (fr) * 2016-10-18 2018-04-26 Robert Bosch Gmbh Dispositif de fixation rapide pour machine-outil portative, en particulier une meuleuse d'angle dotée d'au moins arbre de sortie susceptible d'être entraîné en rotation
CN109862998B (zh) * 2016-10-18 2022-01-11 罗伯特·博世有限公司 用于具有至少一个可旋转地驱动的从动轴的便携式工具机、尤其是角磨机的快速夹紧装置
US11865667B2 (en) * 2017-04-12 2024-01-09 Robert Bosch Gmbh Grinding means device, in particular grinding-disc device or backup-pad device
US20200230776A1 (en) * 2017-04-12 2020-07-23 Robert Bosch Gmbh Grinding Means Device, in particular Grinding-Disc Device or Backup-Pad Device
US11590593B2 (en) 2019-11-28 2023-02-28 Makita Corporation Power tool
US11660690B2 (en) 2019-11-28 2023-05-30 Makita Corporation Power tool
US11364545B2 (en) 2019-12-26 2022-06-21 Makita Corporation Power tool
US11772171B2 (en) 2020-02-13 2023-10-03 Makita Corporation Power tool

Also Published As

Publication number Publication date
EP1790434B1 (fr) 2008-03-19
ATE389510T1 (de) 2008-04-15
DE502005003376D1 (de) 2008-04-30

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