EP1642680A1 - Capot pour outil motorisé - Google Patents

Capot pour outil motorisé Download PDF

Info

Publication number
EP1642680A1
EP1642680A1 EP05108916A EP05108916A EP1642680A1 EP 1642680 A1 EP1642680 A1 EP 1642680A1 EP 05108916 A EP05108916 A EP 05108916A EP 05108916 A EP05108916 A EP 05108916A EP 1642680 A1 EP1642680 A1 EP 1642680A1
Authority
EP
European Patent Office
Prior art keywords
tool
covering device
covering
contact surface
tangential
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
EP05108916A
Other languages
German (de)
English (en)
Other versions
EP1642680B1 (fr
Inventor
Christian Koschel
Alexander Funk
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 EP1642680A1 publication Critical patent/EP1642680A1/fr
Application granted granted Critical
Publication of EP1642680B1 publication Critical patent/EP1642680B1/fr
Anticipated expiration legal-status Critical
Ceased 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 a covering device for partially covering a disc-shaped grinding or cutting tool of a tool device, in particular an angle grinder, in a front axial direction, wherein the covering is formed in particular for retrofitting the tool device.
  • a contact means is provided which forms a contact surface, to set as needed on a partially covering the tool, strip-shaped shielding of the tool device.
  • the contact surface is this at least partially applied to a lateral surface of the shield.
  • the covering device has a protective pane oriented essentially transversely to the contact surface, by means of which the tool can be partially covered in the axial direction on the front side.
  • a shielding element which consists of a circular arc-shaped in longitudinal section fender, which is attached via a truncated cone section on the device head of the tool.
  • the shielding element partially covers the tool in the radial direction.
  • a cover for angle grinders is known. This has a protective disk on which an additional cover is pivotally mounted is. The disc has over its circumference partially on a jacket member which engages around the shield, wherein the cover is to be attached in a manner not shown frictionally on the angle grinder.
  • the tool can be covered particularly well during operation.
  • the manufacturing costs of the cover are relatively high.
  • the known means for frictional locking the cover device on the power tool such as with the help of clamping screws, either only cumbersome to operate or not suitable for the forces occurring during operation of the cover, such as tangentially acting bumps to safely absorb without that the covering device slips relative to the tool device.
  • the present invention has for its object to provide a covering, which avoids the disadvantages mentioned and at low production costs fast assembly and disassembly with respect to the tool device and a secure fit ensures this.
  • the object is achieved by arranging in each case one rear gripping means at two tangential ends of the contact surface, wherein at least one of the rear gripping means is elastic in the radial direction, ie. by automatically recoverable deformation, is pivotable to change a distance between the rear grip means can.
  • the covering can be locked particularly easily with counter-locking means of the tool device or a corresponding locking can be achieved by the distance between the rear grip means is increased by a corresponding external force application.
  • the rear grip after termination of the external force application by the recovery forces of the elastic support of the at least one engaging behind their original distance again and lock it with the counter-locking means of the power tool.
  • the rear engagement means are removed from each other against the restoring forces in order to release the locking between the rear engagement means with the counter-locking means.
  • the rear gripping means extend from the contact surface radially inwards in order to be able to engage behind two tangential boundary edges of the shielding element.
  • the covering device can thereby be easily and quickly plugged onto the shielding element of the tool device, wherein the rear engagement means engage behind both boundary edges of the shielding element and thus fix the covering device in both tangential directions.
  • At least one of the rear engagement means is formed on a rigidly connected to the application means hook element.
  • a substantially radial slot is embedded in the protective pane. Through this slot, the cover has a certain elasticity, by which the rear gripping means can be moved away from each other by external forces to be pressed by the recovery forces back to their original position. In this way, a tool-free fixing and dismantling of the covering device relative to the tool device is possible.
  • At least one of the rear engagement means is formed on a resilient locking element.
  • the covering device can be fixed particularly stably on the tool device.
  • the latching element has a spring arm and a latching nose, which projects radially inward at a free end of the spring arm.
  • the spring arm is formed by two formed on the tangential end and substantially parallel incisions, whereby the locking element is particularly inexpensive to produce.
  • the rear gripping means are completely integral with the remaining covering means, i. only by deformation or partial removal of the cover forming material formed. In this way, a stable locking element can be provided at low production costs.
  • the protective pane advantageously extends at least over a semicircle defined by the application means.
  • the tool can be particularly well covered to protect the operator against flying sparks and other detached and accelerated material. Due to the ease of attachment and removal of the cover while a quick replacement of the tool is guaranteed at any time.
  • FIG. 1 shows a tool device 2 in the form of an angle grinder having a housing 4 with a device head 6.
  • the tool device 2 has on the device head 6 a rotatable about an axis A tool spindle 8, on which a disk-shaped tool 10 is attached.
  • a shielding element 12 in the form of a protective plate is fixedly attached to the device head 6, which partially surrounds the tool 10 in the radial direction.
  • the shielding member 12 has a lateral surface 14, which is circular arc-shaped in longitudinal section and has a straight section in cross-section, which is rounded to the edges.
  • the tool 10 is fixed on the tool spindle 8 via a tool holder 16.
  • the tool holder 16 for attachment or removal of the tool 10 by a mounting tool 18, for example in the form of a wrench or, as shown, in the form of a special tool, be solved or tightened.
  • a cover 20 is shown, which is mounted on the shield 12 tool-free or disassembled.
  • the covering device 20 has a strip-shaped application means 22, which is shaped substantially corresponding to the lateral surface 14 of the shielding element 12.
  • the covering device 20 has an inwardly projecting rear engagement means 24 at both tangential ends of the application means 22.
  • the rear gripping means 24 have a distance a to each other.
  • the first engagement means 24 come into contact with the lateral surface 14 and are pressed apart, whereby the distance a increases.
  • the lateral surface 14 is in tangential Limited direction by limiting edges 26, behind which snap the rear gripping means 24 as a result of pollverformungs ultimatelyn.
  • the covering device 20 has a protective pane 30 essentially perpendicular to a straight section of a contact surface 28 of the application strip 22.
  • This protective plate 30 extends over a semi-circle spanned by the application means 22 and shields the tool 10 in the front-side, axial direction towards the outside in the mounted state of the covering device 20 on the shielding element 12. In this case, the protective plate 30 protrudes partially over the tool spindle 8 in the axial direction.
  • FIG. 3a to 3c show a first embodiment of the rear gripping means 24. These are in this case formed on a respective free end of two hook elements 32, which in turn are formed at the tangential ends of the application means 22. In this way, the hook elements 32 are integrally formed with the engaging means 22 together with the Schugreifschn 24 and substantially dimensionally stable. In order to still be able to move apart the rear gripping means 24 in order to increase the distance a and the cover 20 to hook on the boundary edges 26 of the shield 12 and to solve the entangled at the boundary edges 26 cover 20 of the shielding 12 can, is at the protective plate 30 except a radial slot 34.
  • This slot 34 allows for attaching or loosening the cover 20 a deformation of the application means 22, whereby the distance a between the rear grip means 24 by radial pivoting thereof can be increased to each other. As a result, they can be moved past the boundary edges 26 in order to hook them to these or to release them.
  • hook elements 32 As can be seen in particular from Fig. 3c, also formed on the inside a trough 36 which allows a better grip of the hook member 32 at the respective boundary edge 26 of the shield 12.
  • the rear gripping means 24 are each formed on a latching lug 38 of a spring-elastic latching element 40.
  • This has a spring arm 42, which is formed by two parallel and tangentially aligned cuts 44 at the respective tangential end of the application means 22.
  • the rear engagement means 24 are elastically pivotable relative to the application means 22 in the radial direction in order to be able to change the distance a.
  • the covering device 20 can thus be plugged onto the shielding element 12 quickly and without the aid of tools.
  • the rear engagement means 24 snap over the boundary edges 26 in both cases in order to fix the covering device 20 in the tangential and radial direction on the shielding element 12.
  • the covering device 20 is fixed in the axial direction by the partially arched shape of the contact surface 28 adapted to the lateral surface 14 of the shielding element 12.
  • one half of the tool 10 of the tooling device is covered by the protective disk 30 in the front axial direction in order to better protect the operator from the sparks generated during operation and other accelerated material particles.
  • the covering device can be released from the shielding element 12 just as quickly and without tools by slightly pulling the rear gripping means 24 apart in order to be able to access the tool receptacle 16 with the assembly tool 18.

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)
EP05108916A 2004-09-29 2005-09-27 Capot pour outil motorisé Ceased EP1642680B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004047278A DE102004047278A1 (de) 2004-09-29 2004-09-29 Abdeckeinrichtung für ein Werkzeuggerät

Publications (2)

Publication Number Publication Date
EP1642680A1 true EP1642680A1 (fr) 2006-04-05
EP1642680B1 EP1642680B1 (fr) 2009-01-14

Family

ID=35241005

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05108916A Ceased EP1642680B1 (fr) 2004-09-29 2005-09-27 Capot pour outil motorisé

Country Status (3)

Country Link
US (1) US20060068690A1 (fr)
EP (1) EP1642680B1 (fr)
DE (2) DE102004047278A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3141342A3 (fr) * 2015-09-10 2017-03-22 Makita Corporation Meuleuse avec couvercle et couvercle
US10357868B2 (en) 2015-09-10 2019-07-23 Makita Corporation Grinder, cover, and lock nut
US10556319B2 (en) 2015-09-10 2020-02-11 Makita Corporation Grinder and cover
DE102021126776A1 (de) 2021-10-15 2023-04-20 Metabowerke Gmbh Trennabdeckung sowie Werkzeugmaschinensystem mit Trennabdeckung

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU308238S (en) * 2005-09-30 2006-08-01 Bosch Gmbh Robert Protection hood for angle grinder
AU308237S (en) * 2005-10-05 2006-08-01 Bosch Gmbh Robert Protection hood for angle grinder
USD553933S1 (en) * 2006-10-18 2007-10-30 Robert Bosch Gmbh Safety guard for a hand tool
DE102006053305A1 (de) * 2006-11-13 2008-05-15 Robert Bosch Gmbh Handwerkzeugmaschine mit Schutzhaube, insbesondere Winkelschleifer
DE102008022294A1 (de) * 2008-04-28 2009-10-29 C. & E. Fein Gmbh Schutzhaube für ein Schleifgerät
DE102009017299A1 (de) * 2009-04-11 2010-10-21 Metabowerke Gmbh Schutzhaube für Elektrohandwerkzeuggeräte und Elektrohandwerkzeuggerät
CN101890677B (zh) * 2009-05-19 2014-04-23 株式会社吴英制作所 防尘罩构造体、磨削装置以及切削装置
JP4866956B2 (ja) * 2009-05-19 2012-02-01 株式会社呉英製作所 防塵カバー構造体、研削装置及び切削装置
DE202011050394U1 (de) 2011-06-08 2012-09-10 Makita Corporation Schutzhaube für ein handhaltbares Motorarbeitsgerät
DE102012207571B4 (de) * 2012-04-27 2021-11-11 Robert Bosch Gmbh Abdeckvorrichtung mit Staubabsaugung bei Verwendung mit einem Elektrowerkzeug
CN103962818B (zh) * 2013-01-30 2016-06-22 苏州宝时得电动工具有限公司 将工作头装卸于动力工具的操作方法
JP6943584B2 (ja) * 2017-03-17 2021-10-06 株式会社マキタ グラインダ
WO2018203134A1 (fr) 2017-05-01 2018-11-08 Dronco Gmbh Suppresseur d'étincelles pour outil abrasif rotatif
CN110524042A (zh) * 2018-05-25 2019-12-03 南京德朔实业有限公司 角磨机
DE202019101534U1 (de) * 2018-05-25 2019-05-20 Nanjing Chervon Industry Co., Ltd. Winkelschleifer
DE102018118286A1 (de) * 2018-07-27 2020-01-30 Metabowerke Gmbh Schutzvorrichtung
JP7467031B2 (ja) 2018-08-01 2024-04-15 株式会社マキタ 電動工具のホイールカバー
CN110962017A (zh) * 2018-09-30 2020-04-07 苏州宝时得电动工具有限公司 一种角磨机
US12454035B2 (en) 2022-12-19 2025-10-28 Black & Decker Inc. Shield assembly for power tool

Citations (3)

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Publication number Priority date Publication date Assignee Title
GB940226A (en) * 1961-07-12 1963-10-30 Bosch Gmbh Robert Improvements in protective hoods for motor driven hand tools
DE9403777U1 (de) * 1994-03-05 1994-08-11 Reiling, Karl, 75203 Königsbach-Stein Schutzeinrichtung für Winkelschleifgeräte
GB2329440A (en) * 1997-09-23 1999-03-24 Liu Wun Hui Front shield of power sanding machine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE321422B (fr) * 1968-02-20 1970-03-02 Bahco Ab
USD400417S (en) * 1991-11-12 1998-11-03 Moran Ii John Patrick Transparent sawdust spray guard for a hand-held electric saw
US5737843A (en) * 1996-10-03 1998-04-14 Fringer; Morris A. Universal devices for protecting the user of a circular saw from flying debris
DE10000701A1 (de) * 2000-01-10 2001-07-12 Bosch Gmbh Robert Winkelschleiferschutzhaube
DE10124439A1 (de) * 2001-05-18 2002-11-21 Bosch Gmbh Robert Handgeführtes Elektrowerkzeug mit Schutzhaube
DE10131266A1 (de) * 2001-06-29 2003-01-09 Bosch Gmbh Robert Handschleifmaschine
US6564460B1 (en) * 2001-09-01 2003-05-20 David J. Hundley Detachable circular saw guard
US6699114B1 (en) * 2002-04-26 2004-03-02 Benedict Engineering Company, Inc. Pivotal guards for power hand tools with rotating discs
DE10316182A1 (de) * 2003-04-09 2004-10-28 Robert Bosch Gmbh Handschleifmaschine mit Schutzhaube
TWM251717U (en) * 2004-01-20 2004-12-01 Yue-Ting Chen Adjusting structure for hand-held cutter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB940226A (en) * 1961-07-12 1963-10-30 Bosch Gmbh Robert Improvements in protective hoods for motor driven hand tools
DE9403777U1 (de) * 1994-03-05 1994-08-11 Reiling, Karl, 75203 Königsbach-Stein Schutzeinrichtung für Winkelschleifgeräte
GB2329440A (en) * 1997-09-23 1999-03-24 Liu Wun Hui Front shield of power sanding machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3141342A3 (fr) * 2015-09-10 2017-03-22 Makita Corporation Meuleuse avec couvercle et couvercle
US10357868B2 (en) 2015-09-10 2019-07-23 Makita Corporation Grinder, cover, and lock nut
US10478943B2 (en) 2015-09-10 2019-11-19 Makita Corporation Grinder, cover and cover set
US10556319B2 (en) 2015-09-10 2020-02-11 Makita Corporation Grinder and cover
DE102021126776A1 (de) 2021-10-15 2023-04-20 Metabowerke Gmbh Trennabdeckung sowie Werkzeugmaschinensystem mit Trennabdeckung

Also Published As

Publication number Publication date
EP1642680B1 (fr) 2009-01-14
DE502005006457D1 (de) 2009-03-05
US20060068690A1 (en) 2006-03-30
DE102004047278A1 (de) 2006-04-06

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