EP0407337B1 - Dispositif à main avec un disque à tronçonner ou une meule - Google Patents

Dispositif à main avec un disque à tronçonner ou une meule Download PDF

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Publication number
EP0407337B1
EP0407337B1 EP90810444A EP90810444A EP0407337B1 EP 0407337 B1 EP0407337 B1 EP 0407337B1 EP 90810444 A EP90810444 A EP 90810444A EP 90810444 A EP90810444 A EP 90810444A EP 0407337 B1 EP0407337 B1 EP 0407337B1
Authority
EP
European Patent Office
Prior art keywords
housing
sleeve
receptacle
diameter
protective hood
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
EP90810444A
Other languages
German (de)
English (en)
Other versions
EP0407337A1 (fr
Inventor
Manfred Walter
Wolfgang Erdt
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
Priority to AT90810444T priority Critical patent/ATE91941T1/de
Publication of EP0407337A1 publication Critical patent/EP0407337A1/fr
Application granted granted Critical
Publication of EP0407337B1 publication Critical patent/EP0407337B1/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
    • 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
    • B24B23/028—Angle tools

Definitions

  • the invention relates to a hand-held device for driving cutting or grinding disks with a housing and a protective hood which partially surrounds the disc and is releasably connected to the housing, the protective hood having a sleeve-shaped approach which cooperates with the housing for the releasable connection.
  • Hand-held devices of the aforementioned type are provided with a protective hood which partially surrounds the pane, so that the risk of injury is reduced and an uncontrolled throwing away of the material to be processed is prevented.
  • a protective hood which partially surrounds the pane, so that the risk of injury is reduced and an uncontrolled throwing away of the material to be processed is prevented.
  • different parts of the pane must be exposed from the protective hood.
  • the adjusting screw can come into a position, for example, which is hidden by the housing in such a way that it cannot be reached by the tool.
  • the protective hood can therefore not be clamped sufficiently.
  • the present invention has for its object to provide a handheld device of the type mentioned, the protective cover is sufficient in any position and also clamped to the housing without any special tools.
  • the housing has a receptacle which is adjustable in diameter for the sleeve-shaped attachment of the protective hood.
  • the adjustment device By arranging a diameter-adjustable receptacle on the housing of the hand-held device, it is possible to also arrange the adjusting device on the housing. As a result, the adjustment device always takes the same position, regardless of the position of the protective hood. The accessibility is not affected in any position of the protective hood.
  • the receptacle is preferably designed as a slotted sleeve, the circumferential ends of which can be displaced relative to one another in order to adjust the diameter of the receptacle.
  • the circumferential ends of the slotted sleeve can preferably be displaced relative to one another by means of an eccentric lever.
  • an eccentric lever can cooperate, for example, with angled tabs on the peripheral ends of the slotted sleeve, these tabs also being able to accommodate the bearings of such an eccentric lever.
  • the invention will be explained in more detail below on the basis of a drawing, for example, showing it.
  • This shows a hand-held device according to the invention with the protective hood removed, in a perspective view.
  • the hand-held device has a housing 1 with a handle 2 connected to it.
  • a spindle 3 protrudes from the housing 1 for receiving a grinding wheel (not shown).
  • a protective hood 4 partially surrounding the wheel has a sleeve-shaped extension 4a for releasable connection to the housing 1.
  • a receptacle Arranged on the housing 1 is a receptacle which surrounds the spindle 3 and is adjustable in diameter for the sleeve-shaped extension 4a of the protective hood 4.
  • the receptacle is designed as a slotted sleeve 5, the circumferential ends 5a, 5b of which can be displaced relative to one another in order to adjust the diameter of the receptacle.
  • the ends 5a, 5b are angled radially outwards.
  • the sleeve 5 is connected to the housing 1 only over part of its circumference, so that its diameter can be adjusted by pulling the ends 5a, 5b together.
  • the inner diameter of the sleeve 5 is matched to the outer diameter of the extension 4a of the protective hood 4.
  • the angled ends 5a, 5b are penetrated by a bolt 6.
  • a lever 7 is rotatably mounted on the pin 6.
  • the lever 7 has two pins 8 connected to the ends 5a, 5b.
  • the pins 8 reach the area of run-up slopes 5c, 5d at the ends 5a, 5b.
  • the sleeve 5 opens due to its elasticity or a spring element 9 arranged between the angled ends 5a, 5b. This opening or enlarging the diameter of the sleeve 5 removes the clamping of the extension 4a, so that the protective hood 4 is in any position Position can be rotated.
  • the lever 7 is then pivoted back into the position shown.
  • the pins 8 run on the run-up slopes 5c, 5d and bring the ends 5a, 5b together.
  • the protective hood 4 is thereby firmly connected to the housing 1 again.
  • the ends 5a, 5b of the sleeve 5 can also be clamped together by means of an eccentric lever.

Landscapes

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

Claims (3)

  1. Appareil à main pour l'entraînement de disques à tronçonner ou de meules, comprenant un carter (1) et un capot de protection (4) qui enveloppe partiellement le disque et est raccordé de manière amovible au carter (1), le capot de protection (4) présentant pour la liaison amovible un embout (4a) en forme de douille qui coopère avec le carter (1),
    caractérisé en ce que le carter (1) comporte un logement à diamètre réglable pour l'embout (4a) en forme de douille du capot de protection (4).
  2. Appareil à main selon la revendication 1, caractérisé en ce que le logement est conformé en douille fendue (5) dont les extrémités périphériques (5a, 5b) peuvent être déplacées l'une par rapport à l'autre pour régler le diamètre du logement.
  3. Appareil à main selon la revendication 2, caractérisé en ce que pour le déplacement relatif des extrémités périphériques (5a, 5b) de la douille fendue (5), il est prévu un levier d'excentrique.
EP90810444A 1989-07-01 1990-06-19 Dispositif à main avec un disque à tronçonner ou une meule Expired - Lifetime EP0407337B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90810444T ATE91941T1 (de) 1989-07-01 1990-06-19 Handgeraet mit trenn- oder schleifscheibe.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3921772A DE3921772A1 (de) 1989-07-01 1989-07-01 Handgeraet mit trenn- oder schleifscheibe
DE3921772 1989-07-03

Publications (2)

Publication Number Publication Date
EP0407337A1 EP0407337A1 (fr) 1991-01-09
EP0407337B1 true EP0407337B1 (fr) 1993-07-28

Family

ID=6384159

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90810444A Expired - Lifetime EP0407337B1 (fr) 1989-07-01 1990-06-19 Dispositif à main avec un disque à tronçonner ou une meule

Country Status (6)

Country Link
US (1) US5031325A (fr)
EP (1) EP0407337B1 (fr)
JP (1) JP2826370B2 (fr)
AT (1) ATE91941T1 (fr)
DE (2) DE3921772A1 (fr)
ES (1) ES2042263T3 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4113641A1 (de) * 1991-04-26 1992-10-29 Bosch Gmbh Robert Handwerkzeugmaschine
US5637035A (en) * 1995-06-28 1997-06-10 Milwaukee Electric Tool Corporation Adjustable guard arrangement for power tool
US5582041A (en) * 1995-09-18 1996-12-10 Spiess; David E. Portable hand-held fleshing tool
US6071184A (en) * 1998-09-02 2000-06-06 Seh America, Inc. Fluid deflecting device for use in work piece holder during a semiconductor wafer grinding process
US6561887B2 (en) * 2000-02-17 2003-05-13 Bao Shyan Lai Protective cover detachably installed on a cutting machine/engraving machine combination
US6464573B1 (en) 2000-06-30 2002-10-15 Porter-Cable Corporation Guard attachment system with knurled clamp ring
US6699114B1 (en) * 2002-04-26 2004-03-02 Benedict Engineering Company, Inc. Pivotal guards for power hand tools with rotating discs
US6886258B2 (en) * 2002-11-15 2005-05-03 Richard C. Swanson Hand-held rotary hedge trimmer
TWM251717U (en) * 2004-01-20 2004-12-01 Yue-Ting Chen Adjusting structure for hand-held cutter
JP4730374B2 (ja) * 2005-08-22 2011-07-20 株式会社ワーク ３ピースホイールのメッキ除去装置
DE102007000845A1 (de) * 2007-10-11 2009-04-16 Hilti Aktiengesellschaft Handwerkzeugmaschine
JP2010005720A (ja) * 2008-06-25 2010-01-14 Masao Nishiki ハンド式回転工具
JP5684056B2 (ja) * 2010-08-16 2015-03-11 株式会社マキタ 手持ち工具
JP5959421B2 (ja) 2011-12-14 2016-08-02 株式会社マキタ グラインダ
DE102011089758A1 (de) * 2011-12-23 2013-06-27 Robert Bosch Gmbh Schutzhaubenverdrehsicherungsvorrichtung
DE102012210762A1 (de) * 2012-06-25 2014-01-02 Robert Bosch Gmbh Schutzhaubenvorrichtung
DE102012214834A1 (de) * 2012-08-21 2014-02-27 Robert Bosch Gmbh Schutzhaubenvorrichtung

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA608790A (en) * 1960-11-15 The Stanley Works Saw blade guard
US3382578A (en) * 1966-05-11 1968-05-14 Gunther Heinrich Wilhelm Dobbertin Portable cutting tools
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
JPS54177693U (fr) * 1978-06-03 1979-12-15
DE3338917A1 (de) * 1983-10-27 1985-05-09 C. & E. Fein Gmbh & Co, 7000 Stuttgart Schutzhaubenbefestigung fuer tragbare winkelschleifer
DE3636300A1 (de) * 1986-10-24 1988-04-28 Verseidag Flaechengebilde aus fasern, insbesondere als verstaerkungseinlage fuer kunststoffteile
DE3636500C2 (de) * 1986-10-27 1995-02-09 Bosch Gmbh Robert Schutzhaube für Handwerkzeugmaschinen, insbesondere Schleifmaschinen
DE3638337A1 (de) * 1986-11-10 1988-05-19 Licentia Gmbh Spannvorrichtung fuer die schutzhaube von winkelschleifern od. dergl. elektrowerkzeuge
US4790696A (en) * 1987-12-03 1988-12-13 The Stanley Works Chuck key mounting and ejector arrangement

Also Published As

Publication number Publication date
ES2042263T3 (es) 1993-12-01
DE3921772A1 (de) 1991-01-03
ATE91941T1 (de) 1993-08-15
DE59002083D1 (de) 1993-09-02
EP0407337A1 (fr) 1991-01-09
JPH03117556A (ja) 1991-05-20
US5031325A (en) 1991-07-16
JP2826370B2 (ja) 1998-11-18

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