EP0322626B2 - Meuleuse portative avec capot de protection orientable - Google Patents

Meuleuse portative avec capot de protection orientable Download PDF

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Publication number
EP0322626B2
EP0322626B2 EP88120765A EP88120765A EP0322626B2 EP 0322626 B2 EP0322626 B2 EP 0322626B2 EP 88120765 A EP88120765 A EP 88120765A EP 88120765 A EP88120765 A EP 88120765A EP 0322626 B2 EP0322626 B2 EP 0322626B2
Authority
EP
European Patent Office
Prior art keywords
protective hood
locking
hand grinder
grinder according
holding part
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.)
Expired - Lifetime
Application number
EP88120765A
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German (de)
English (en)
Other versions
EP0322626A2 (fr
EP0322626B1 (fr
EP0322626A3 (en
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.)
C&E Fein GmbH and Co
Original Assignee
C&E Fein 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
Family has litigation
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Application filed by C&E Fein GmbH and Co filed Critical C&E Fein GmbH and Co
Publication of EP0322626A2 publication Critical patent/EP0322626A2/fr
Publication of EP0322626A3 publication Critical patent/EP0322626A3/de
Application granted granted Critical
Publication of EP0322626B1 publication Critical patent/EP0322626B1/fr
Publication of EP0322626B2 publication Critical patent/EP0322626B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/04—Protective covers for the grinding wheel
    • B24B55/05—Protective covers for the grinding wheel specially designed for portable grinding machines
    • B24B55/052—Protective covers for the grinding wheel specially designed for portable grinding machines with rotating tools

Definitions

  • the invention relates to an angle grinder with a grinder housing comprising a motor housing and a gear housing, in which a grinding spindle is rotatably mounted, with a protective hood for a tool, which is rotatably mounted on a clamping neck by means of a holding part and can be fixed thereon, a locking part in the Area of the clamping neck is held in a rotationally fixed manner, the fixing part or the holding part having at least one and the other part in each case a plurality of locking elements which can be locked together and are loaded by a spring member and which can be released from one another against the spring force, and wherein a lever is provided for actuation.
  • Such a grinding machine is known from EP-A-0 126 641.
  • a further hand grinder in which the protective hood is rotatably mounted on the clamping neck and is held with axial play, whereby to compensate for this play, a resilient element biased in the axial direction is used, which has a fastening ring of the protective cover presses against a shoulder surface on the clamping neck. As a result, the protective hood is secured against twisting by friction locking.
  • Another hand grinder is known from EP-A-0 143 251, in which the protective hood is detachably fastened on the spindle neck of the gear housing by means of a clamp and a fastening screw.
  • a securing element is provided in the region of the end face of the spindle neck, which protrudes beyond the outside diameter of the spindle neck and the inside diameter of the clamping clamp.
  • This securing element can be designed as a flat disc and fastened with a screw on the end face of the clamping neck.
  • the securing element can be designed as a spring-loaded lever and can be pivotably mounted on the spindle neck.
  • a stationary machine tool in which a protective hood for a rotating tool is provided, which can be fixed to a rear plate of the machine housing via a ring rigidly connected thereto.
  • Various circumferential recesses in the ring are used for the connection, through which bolts can be inserted into the rear plate.
  • a spring-loaded pin is provided, which can be snapped into one of the recesses on the circumference of the ring.
  • the invention has for its object to improve a grinding machine of the type mentioned in such a way that a simple and ergonomically favorable adjustment of the protective hood is made possible.
  • the locking elements are locking recesses provided on one part and locking bodies provided on the other part, in which case the locking bodies can engage in the locking recesses.
  • the locking recesses are bores, while in the simplest case the locking body is a pin that engages in these bores.
  • a very easy to implement implementation of the invention provides that a locking body and several locking recesses are provided, the single locking body is then arranged on the holding or locking part and the locking recesses on the other part.
  • the holding part is designed as a ring surrounding the clamping neck, which is preferably integrally formed on the protective hood.
  • the locking part can be a ring enclosing the clamping neck.
  • the spring member is an annular element enclosing the clamping neck, with which the respective tiltable part is placed against a shoulder.
  • FIG. 1 An angle grinder shown in FIG. 1, designated as a whole by 1, shows a motor housing 2 and a gear housing 3.
  • a grinding spindle 4 protrudes from the gear housing 3 and carries a clamping flange 5 at its end.
  • a grinding wheel 6 is placed on this clamping flange 5 and clamped against the clamping flange 5 by a counter flange 7 of a screw that can be screwed into the grinding spindle 4.
  • the grinding wheel 6 is partially covered by a protective hood designated as a whole, which is rotatably mounted on a clamping neck 9 which surrounds the grinding spindle 4 between the counter flange 5 and the gear housing 3 and is mounted on the gear housing 3.
  • the clamping neck 9 is successive in a total of three sections 10 to 12 coaxial to the grinding spindle 4, starting from the gear housing divided smaller outer diameter. Between these circular cylindrical sections 10 to 12, annular contact surfaces 13 and 14 are thereby formed in planes perpendicular to the axis of rotation of the grinding spindle 4.
  • the first circular-cylindrical section lying adjacent to the gear housing 3 is surrounded by a spring element 15 which, on the one hand, is located on a gear housing 3 which is formed and is perpendicular to the axis of rotation of the grinding spindle 4
  • Surface 16 is supported and, on the other hand, bears against a ring 17, likewise surrounding the first circular cylindrical section 10, of a locking element designated as a whole as 18. which also has a lever arm 19 molded onto the ring 17, which extends in an intermediate space between the protective hood 8 and the motor housing 2.
  • the ring 17 is pressed by the spring element 15 against an intermediate ring 20 seated on the second circular-cylindrical section 11, which in turn bears against the contact surface 13 between the circular-cylindrical section 10 and the smaller-diameter circular-cylindrical section 11.
  • the intermediate ring 20 is in turn held by a fixing ring 21 which sits on the third circular cylindrical section 12 and bears against the contact surface 14.
  • This fixing ring 21 is held by a snap ring 22 which engages in a circumferential groove 23, machined into the third circular-cylindrical section 12.
  • the intermediate ring 20 is provided on its side facing the fixing ring 21 with a radially outward opening and an annular recess 24 open to the fixing ring 21, in which an annular holding part 25 of the protective hood 8 can be rotated coaxially to the grinding spindle 4, but in is axially fixed.
  • This holding part 25 has holes 26 arranged at the same angular distance on a circular arc segment. One of these bores 26 engages with a pin 27 arranged on the fixing part 18 in the region of the transition between the ring 17 and the lever arm 19, which extends from the fixing part 18 through a recess 28 in the intermediate ring 20 to the holding part 25.
  • the ring 17 is held on the first circular cylindrical section 10 with play so that it can be displaced in the direction of the gear housing 3 in the axial direction of the grinding spindle 4 against the action of the spring element 15, which is, for example, a wave spring or a rubber ring .
  • the spring element 15 which is, for example, a wave spring or a rubber ring .
  • the protective hood 8 which is rotatably mounted with the holding part 25 in the intermediate ring 20, can be freely rotated around the clamping neck 9.
  • the pin 27 is moved again in the direction of the holding part 25 by the spring element 15, so that he now comes into engagement with the opposite bore 26 and fixes the holding part 25 with the protective hood 8 in a rotationally fixed manner on the clamping neck 9. This is done in that the pin 27 is fixed non-rotatably on the clamping neck 9 through the recess 28.
  • the walls of the bores 26 are shaped such that the pin 27 cannot jump out of the bores 26 even when there is strong lateral pressure on the protective hood 8. Furthermore, in order to be able to lock the protective hood 8 in all conceivable rotational positions, it is provided that the bores 26 are provided on the holding part 25 in a large circumferential area, all of which lie with their center on a circular path segment concentric with the clamping neck 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Claims (7)

  1. Meuleuse d'angle portative pourvue d'un carter de meuleuse (2, 3) comprenant un carter de moteur (2) et un carter de protection des engrenages (3), dans lequel une broche porte-meule (4) est montée rotative, et pourvue d'un capot de protection (8) pour un outil (6), capot monté tournant sur un collier de serrage (9) au moyen d'une partie de maintien (25), et pouvant être bloqué sur celui-ci, une pièce de blocage (18) étant maintenue fixe en rotation dans la zone du collier de serrage (9), la pièce de blocage (18) ou la partie de maintien (25) présentant au moins un et, pour respectivement l'autre partie, plusieurs, éléments de blocage (26, 27) pouvant s'encliqueter ensemble et soumis à l'action d'un organe élastique (15), et pouvant se désolidariser à l'encontre de la force élastique, un levier (19) étant prévu pour l'actionnement, caractérisée en ce que le levier (19) est prévu sur la pièce de blocage (18) pour permettre le basculement, et en ce que le levier (19) présente une partie dépassant latéralement sur la périphérie du capot de protection (18), partie qui s'étend entre le capot de protection (18) et le carter de moteur (2).
  2. Meuleuse portative selon la revendication 1, caractérisée en ce que les éléments de blocage sont, sur une partie, des évidements (26), et sur une autre partie, des taquets (27).
  3. Meuleuse portative selon la revendication 2, caractérisée en ce qu'un taquet (27) et plusieurs évidements (26) sont prévus.
  4. Meuleuse portative selon l'une des revendications précédentes, caractérisée en ce que la partie de maintien (25) est conformée en anneau entourant le collier de serrage (9).
  5. Meuleuse portative selon la revendication 4, caractérisée en ce que la partie de maintien (25) ne forme qu'une seule pièce avec le capot de protection (8).
  6. Meuleuse portative selon l'une des revendications précédentes, caractérisée en ce que la pièce de blocage (18) est un anneau entourant le collier de serrage (9).
  7. Meuleuse portative selon l'une des revendications précédentes, caractérisée en ce que l'organe élastique est un élément annulaire (15) entourant le collier de serrage (9).
EP88120765A 1987-12-24 1988-12-13 Meuleuse portative avec capot de protection orientable Expired - Lifetime EP0322626B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873744219 DE3744219A1 (de) 1987-12-24 1987-12-24 Handschleifmaschine mit verstellbarer schutzhaube
DE3744219 1987-12-24

Publications (4)

Publication Number Publication Date
EP0322626A2 EP0322626A2 (fr) 1989-07-05
EP0322626A3 EP0322626A3 (en) 1990-10-10
EP0322626B1 EP0322626B1 (fr) 1993-03-31
EP0322626B2 true EP0322626B2 (fr) 1996-10-30

Family

ID=6343692

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88120765A Expired - Lifetime EP0322626B2 (fr) 1987-12-24 1988-12-13 Meuleuse portative avec capot de protection orientable

Country Status (5)

Country Link
US (1) US4924635A (fr)
EP (1) EP0322626B2 (fr)
JP (1) JPH01281874A (fr)
DE (1) DE3744219A1 (fr)
ES (1) ES2040316T5 (fr)

Families Citing this family (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5163252A (en) * 1990-11-05 1992-11-17 Northwestern Equipment & Supply Co. Adjustable shield for a dynamic tool
DE4113641A1 (de) * 1991-04-26 1992-10-29 Bosch Gmbh Robert Handwerkzeugmaschine
DE4125796C1 (fr) * 1991-08-03 1992-12-24 C. & E. Fein Gmbh & Co, 7000 Stuttgart, De
SE9201990L (sv) * 1992-06-29 1993-12-30 Atlas Copco Tools Ab Pneumatisk rotationsslipmaskin
JPH0663284U (ja) * 1993-02-05 1994-09-06 リョービ株式会社 動力工具の駆動部構造
US5637035A (en) * 1995-06-28 1997-06-10 Milwaukee Electric Tool Corporation Adjustable guard arrangement for power tool
SE507264C2 (sv) * 1996-06-13 1998-05-04 Atlas Copco Tools Ab Handhållet motordrivet verktyg
US5765289A (en) * 1996-12-20 1998-06-16 Fiskars Inc. Rotary cutter
DE19914855B4 (de) * 1999-04-01 2004-04-22 Metabowerke Gmbh Handschleifmaschine mit einer in Umfangsrichtung verstellbaren Schutzhaube
US6464573B1 (en) 2000-06-30 2002-10-15 Porter-Cable Corporation Guard attachment system with knurled clamp ring
DE20304448U1 (de) * 2003-03-19 2003-06-12 Berhalter Eberhard Handarbeitsgerät
SE525836C2 (sv) * 2003-03-31 2005-05-10 Atlas Copco Tools Ab Slipmaskin med sprängskydd och spindellåsning
DE10336873B4 (de) * 2003-08-11 2007-09-20 Hilti Ag Schutzhaubenanordnung
DE10348395A1 (de) * 2003-10-17 2005-05-19 Robert Bosch Gmbh Schutzhaube für eine Elektrowerkzeugmaschine, Elektrowerkzeugmaschine sowie System mit Schutzhaube und Elektrowerkzeugmaschine
US7059947B2 (en) * 2004-05-12 2006-06-13 The Stanley Works Portable rail cutting apparatus
US20070117499A1 (en) * 2005-11-23 2007-05-24 Sunmatch Industrial Co., Ltd. Rotary protecting hood of a pneumatic grinder
DE102006027576A1 (de) 2006-06-14 2007-12-20 Robert Bosch Gmbh Schutzhauben-Befestigungsvorrichtung
ATE457849T1 (de) * 2006-10-07 2010-03-15 Metabowerke Gmbh Elektrohandwerkzeuggerät, insbesondere ein winkelschleifer mit einer schutzhaube
DE102007041840A1 (de) * 2006-11-13 2008-05-15 Robert Bosch Gmbh Handwerkzeugmaschine mit Schutzhaube, insbesondere Winkelschleifer
DE102006053305A1 (de) * 2006-11-13 2008-05-15 Robert Bosch Gmbh Handwerkzeugmaschine mit Schutzhaube, insbesondere Winkelschleifer
DE102006053303A1 (de) * 2006-11-13 2008-05-15 Robert Bosch Gmbh Handwerkzeugmaschine für ein rotierendes Werkzeug mit Schutzhaube
DE102006053301A1 (de) * 2006-11-13 2008-05-15 Robert Bosch Gmbh Handwerkzeugmaschine für ein rotierendes Werkzeug mit Schutzhaube
DE102007000845A1 (de) * 2007-10-11 2009-04-16 Hilti Aktiengesellschaft Handwerkzeugmaschine
DE102007052684A1 (de) * 2007-11-05 2009-05-07 Robert Bosch Gmbh Handwerkzeugmaschine
DE102007057032A1 (de) * 2007-11-27 2009-05-28 Robert Bosch Gmbh Handwerkzeugmaschine
DE102008002548B4 (de) * 2008-06-20 2021-11-11 Robert Bosch Gmbh Werkzeugmaschine, insbesondere Handwerkzeugmaschine
DE102008040372A1 (de) * 2008-07-11 2010-01-21 Robert Bosch Gmbh Schutzhaubenverdrehsicherungsvorrichtung
DE102009017299A1 (de) * 2009-04-11 2010-10-21 Metabowerke Gmbh Schutzhaube für Elektrohandwerkzeuggeräte und Elektrohandwerkzeuggerät
JP5684056B2 (ja) 2010-08-16 2015-03-11 株式会社マキタ 手持ち工具
JP5579575B2 (ja) * 2010-11-02 2014-08-27 株式会社マキタ ディスクグラインダ
US9120202B2 (en) 2011-06-30 2015-09-01 Black & Decker Inc. Shield assembly for a power tool
DE102011089758A1 (de) * 2011-12-23 2013-06-27 Robert Bosch Gmbh Schutzhaubenverdrehsicherungsvorrichtung
DE102012210759A1 (de) * 2012-06-25 2014-01-02 Robert Bosch Gmbh Schutzhaubenvorrichtung
DE202012102406U1 (de) 2012-06-29 2012-07-25 Sunmatch Industrial Co., Ltd. Deckelstruktur der pneumatischen Handschleifmaschine
US8939816B2 (en) 2012-07-02 2015-01-27 Sunmatch Industrial Co., Ltd. Handheld pneumatic grinder with adjustable wheel guard structure
DE102012112621A1 (de) 2012-12-19 2014-06-26 C. & E. Fein Gmbh Handwerkzeugmaschine mit abnehmbarer Schutzhaube
US9555554B2 (en) 2013-05-06 2017-01-31 Milwaukee Electric Tool Corporation Oscillating multi-tool system
DE102013208809A1 (de) * 2013-05-14 2014-11-20 Robert Bosch Gmbh Schutzhaubenvorrichtung
US9475172B2 (en) * 2014-07-15 2016-10-25 Milwaukee Electric Tool Corporation Adjustable guard for power tool
USD744800S1 (en) 2014-07-16 2015-12-08 Milwaukee Electric Tool Corporation Power tool blade guard
US10201889B2 (en) * 2014-08-06 2019-02-12 Sparky Guard, LLC Fully rotatable grinder guard assembly and method for making same
US10029348B2 (en) * 2016-01-25 2018-07-24 Jose Ramirez Torque sensitive adjustable locking grinder guard
EP3251791B1 (fr) 2016-05-06 2019-03-27 Black & Decker Inc. Levier réversible pour un ensemble de protection d'un outil électrique
US10307886B2 (en) * 2017-03-17 2019-06-04 G.A.W. Inc. Guard and control apparatus for safe operation of a rotary cutter
TWM633645U (zh) * 2022-05-18 2022-11-01 家柱企業有限公司 砂輪機及其保護組件

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Publication number Priority date Publication date Assignee Title
DE7334640U (de) * 1973-12-13 A Stihl Maschinenfab Schutzvorrichtung für Trennschleifer
US1850137A (en) * 1929-05-08 1932-03-22 Walter C Scott Power-actuated saw and drill mechanism
US3811233A (en) * 1972-11-02 1974-05-21 Cincinnati Milacron Inc Quick change guard for tool and cutter grinder
US3818648A (en) * 1973-01-10 1974-06-25 Cincinnati Milacron Inc Quick-change wheel guard for tool and cutter grinder
US3969856A (en) * 1973-09-25 1976-07-20 Andreas Stihl Maschinenfabrik Adjustable protective hood for a rotary tool
IT1040243B (it) * 1975-07-30 1979-12-20 Star Utensili Elett Carter di protezione pe utensili angolari portatili
US4060940A (en) * 1976-01-13 1977-12-06 The Black And Decker Manufacturing Company Adjustable guard construction for cut-off machine
DE3135820C2 (de) * 1981-09-10 1985-01-03 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Handschleifmaschine
DE3338917A1 (de) * 1983-10-27 1985-05-09 C. & E. Fein Gmbh & Co, 7000 Stuttgart Schutzhaubenbefestigung fuer tragbare winkelschleifer
DE3633943A1 (de) * 1986-10-04 1988-04-07 Licentia Gmbh Mit dem spindelhals eines handgefuehrten winkelschleifers oder dergleichen elektrowerkzeug vereinigbare schutzhaube
DE3638337A1 (de) * 1986-11-10 1988-05-19 Licentia Gmbh Spannvorrichtung fuer die schutzhaube von winkelschleifern od. dergl. elektrowerkzeuge

Also Published As

Publication number Publication date
ES2040316T5 (es) 1997-02-16
DE3744219C2 (fr) 1990-01-04
US4924635A (en) 1990-05-15
JPH0579466B2 (fr) 1993-11-02
JPH01281874A (ja) 1989-11-13
EP0322626A2 (fr) 1989-07-05
DE3744219A1 (de) 1989-07-06
EP0322626B1 (fr) 1993-03-31
EP0322626A3 (en) 1990-10-10
ES2040316T3 (es) 1993-10-16

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