EP1395393A1 - Handgeführtes elektrowerkzeug mit schutzhaube - Google Patents
Handgeführtes elektrowerkzeug mit schutzhaubeInfo
- Publication number
- EP1395393A1 EP1395393A1 EP02737804A EP02737804A EP1395393A1 EP 1395393 A1 EP1395393 A1 EP 1395393A1 EP 02737804 A EP02737804 A EP 02737804A EP 02737804 A EP02737804 A EP 02737804A EP 1395393 A1 EP1395393 A1 EP 1395393A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- power tool
- diameter
- receiving collar
- bulge
- tensioning
- 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.)
- Withdrawn
Links
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
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/01—Frames, beds, pillars or like members; Arrangement of ways
- B23Q1/017—Arrangements of ways
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/06—Safety devices for circular cutters
-
- 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
Definitions
- the invention is based on a hand-held power tool with a housing and a protective hood with the features defining the type of claim 1.
- Angle grinders with a protective hood are known, the tightening strap of which has an inside nose.
- the tensioning strap of the protective hood can be connected to a bundle of ahm which is arranged around a spindle axis for a rotating insert tool.
- the nose engages in a groove in the machine-side receiving collar.
- the nose prevents the protective hood from detaching from the receiving collar during operation.
- the locking element opens, which presses the tension band onto the receiving collar. This ensures an increase in safety and a reduction in the risk of injury to the angle grinder, since the protective hood cannot fall off.
- Screws, sinew 11 tensioning levers or the like are known as locking elements, for example.
- An electric tool according to the invention with the features of claim 1 has the advantage over the fact that the protective cover provided with the features according to the invention can also be mounted on an electric tool, in particular an angle grinder, whose support flanges cannot be removed and in which the support flange diameter is only slightly smaller than the diameter of the machine-side mounting collar for the protective hood.
- an electric tool in particular an angle grinder, whose support flanges cannot be removed and in which the support flange diameter is only slightly smaller than the diameter of the machine-side mounting collar for the protective hood.
- the shape and / or the bulge are circular segment-shaped in the axial direction of the spindle axis.
- Such an embodiment is particularly simple to manufacture and is also safe to use.
- the tensioning element forms a bulge.
- the tensioning element can be used to be pushed over the formation on the receiving collar.
- Such an embodiment is particularly easy to implement since the tensioning element is generally movable Part is formed, which is particularly simple with such. Shaping can be provided.
- the power tool each has a plurality of formations and recesses which are arranged at mutually coordinated intervals. Coding of the protective hood on certain power tools is thus particularly advantageously possible.
- the same shape can be used for all shapes and recesses, although a variety of different codings are still possible. In contrast to the case when there is only one shape for the shaping and recessing, where very complicated shapes would be necessary.
- the shapes and recesses each have different, coordinated sizes and / or distances from one another. This makes it possible to achieve even more variations for the coding of the protective hood, since both the size and the distances can be varied.
- the power tool has a support flange which is arranged concentrically around the spindle axis and whose diameter is only slightly smaller than that of the receiving collar. This ensures good support for the insert tool, with the contact surface on the support flange being enlarged compared to the prior art.
- the support flange was either significantly smaller than the receiving collar due to the lugs pointing inwards from the clamping band or the support flange for mounting the protective hood had to be removed.
- the shape and the hood part are each designed in the axial direction of the spindle axis as a positive and a negative shape. This ensures a particularly good connection between the hood part of the protective hood and the receiving collar. This geometry therefore provides excellent protection against loss when the clamping element is released. This also ensures that when the protective hood is rotated from its position in which it can be pushed over the formations of the receiving collar into a position in which this is not the case, it is possible without difficulty.
- a circumferential edge in radius and / or a cone shape are particularly advantageous as positive and negative shapes. These are very easy to manufacture and therefore inexpensive to manufacture.
- FIG. 1 shows a plan view of a protective hood according to the invention
- FIG. 2 shows a perspective view of the protective hood from FIG. 1,
- FIG. 3 shows a plan view of a housing of an angle grinder with a receiving collar according to the invention
- FIG. 4 shows a perspective view of the housing of the angle grinder from FIG. 3,
- FIG. 5 shows a plan view of an angle grinder with the housing of FIGS. 3 and 4 and with the clamping hood of FIGS. 1 and 2 in their assembly position
- FIG. 6 shows a perspective view of the angle grinder from FIG. 5
- Figure 7 is a plan view of the angle grinder with the protective hood in a first working position
- Figure 8 is a plan view of the angle grinder of Figure 7, the protective hood is fixed in a second working position.
- Figures 1. and 2 show two 'views of a protective hood 1 for a hand-held power tool 3, in this case an angle ( Figures 5 to 8).
- the protective hood 1 has a flat semicircular hood part 18, on which a tensioning strap 16 is attached via a transition 15, so that an opening 10 is formed between the tensioning strap 16 and the hood portion 18.
- This opening 10 has a changeable surface F.
- a tensioning element 13, 14 is attached to the tensioning strap 16.
- the tensioning strap 13, 14 here consists of a tensioning lever 13, which is rotatably mounted on a first end 19 of the tensioning strap 16 and cooperates with a second end 17 of the tensioning strap 16 via a spring 14 rotatably mounted on the tensioning lever 13.
- the second end 17 is bent so that it forms a bearing for the spring 14.
- the tensioning band 16 is not designed in the shape of a cylinder jacket, which would correspond to an unchanged second diameter d2 of the opening 10, but rather has a plurality of recesses 12 in which a first diameter d1 of the opening 10 is larger than the second diameter d2.
- three recesses 12 are formed on the strap 16. In plan view, these have a circular segment-shaped design.
- the area of the tensioning element 13, 14 is also designed as a recess 12. This is achieved in that the tensioning band 16 is not formed in the region of its second end 17 along a circular arc of the opening 10, but is bent outwards away from the center of the opening 10.
- the tensioning strap 16 has a width b and is firmly connected to the hood part 18 in a conventionally known manner.
- a transition region 15 is formed in the region of the hood part 18, which adjoins the cylindrical region at which the hood part 18 is connected to the tensioning strap 16. In the present exemplary embodiment, this transition region 15 is designed as a radius r. The geometry of the transition area is important for securing against loss when the tensioning element 13, 14 is released, which is explained in more detail in the description of FIGS. 5 and 6.
- Figures 3 and 4 show two views of a housing 2 for an angle grinder 3 ( Figures 5 to 8).
- a receiving collar 20 is arranged concentrically, which serves to attach the protective hood 1 to the housing 2.
- the receiving collar 20 has in the predominant area a diameter which corresponds to the second diameter d2 of the clamping hood 1 when the clamping element 13, 14 is closed.
- a plurality of formations 21 protrude outward from this second diameter d2 in the radial direction to the spindle axis 5.
- the shape of these formations 21 is in the form of a segment of a circle.
- a total of four formations 21 are formed, the shape of which corresponds to that of the bulges 12 on the tensioning band 16.
- the number of protrusions 21 corresponds to the number of bulges 12.
- the receiving collar 20 has a height h in the axial direction which essentially corresponds to the width b of the tensioning band 16, the height h being able to be slightly greater than the width b.
- the formations 21 are formed in the axial direction towards the housing 2 in such a way that they form the negative shape to the transition region 15 of the protective hood 1.
- a support flange 4 is also formed concentrically around the spindle axis 5, which supports a Insert tool (not ' shown) ' serves ..
- This support flange 4 has a diameter which is only slightly smaller than the second diameter d2 of the tensioning strap 16 in its closed position.
- FIGS. 5 and 6 show two views of an angle grinder 3, the protective hood 1 being shown in a position " in which it is being mounted on the housing 2.
- the tensioning strap 16 is shown here in its open position, that This means that the area F of the opening 10 is largest in this position.
- the protrusions 21 of the receiving collar 20 and the protrusions 12 of the tensioning band 16 are designed as positive and negative forms. Both the protrusions 12 and the protrusions 21 each have between adjacent ones Elements an identical distance a. This makes it possible for the opening 10 of the tensioning strap 16 to be pushed over the receiving collar 20 until the entire width b of the tensioning strap 16 below the formations 21 of the receiving collar 20, that is to say within the Height h of the receiving collar 20.
- the position of the clamping hood 1 with respect to the housing 2 of the angle grinder 3 is selected such that the Angle grinder 3 can be used neither for cutting nor for grinding. Due to the coordinated formations 21 and bulges 12, it is also only possible to mount the protective hood 1 in this one special position. In any other position of the protective hood 1 relative to the housing 2, it is not possible to push the tensioning strap 16 over the formations 21 of the receiving collar 20, since they are not connected to the
- Protective hood 1 corresponds. This also creates a positive and negative shape in the axial direction with respect to the protective hood 1 and the mounting collar 20. This means that the protective hood 1, which is in a working position, is secured against loss, even when the tensioning element 13, 14 solves.
- FIGS. 7 and 8 show the angle grinder 3 with the protective hood 1 in two working positions.
- the angle grinder 3 In the working position of FIG. 7, the angle grinder 3 is generally used for grinding and is separated in the working position of FIG. 8.
- the bulges 12 of the tensioning band 16 are not congruent with the formations 21 of the receiving collar 20.
- the tensioning band 16 is contracted so far by means of the tensioning element 13, 14 that it lies firmly against the receiving collar 20.
- the protective hood 1 is rotated relative to the housing 2 into the only possible mounting position shown in FIGS. tion impossible.
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)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10124439 | 2001-05-18 | ||
DE10124439A DE10124439A1 (de) | 2001-05-18 | 2001-05-18 | Handgeführtes Elektrowerkzeug mit Schutzhaube |
PCT/DE2002/001434 WO2002094504A1 (de) | 2001-05-18 | 2002-04-18 | Handgeführtes elektrowerkzeug mit schutzhaube |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1395393A1 true EP1395393A1 (de) | 2004-03-10 |
Family
ID=7685393
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02737804A Withdrawn EP1395393A1 (de) | 2001-05-18 | 2002-04-18 | Handgeführtes elektrowerkzeug mit schutzhaube |
Country Status (6)
Country | Link |
---|---|
US (1) | US6988939B2 (de) |
EP (1) | EP1395393A1 (de) |
JP (1) | JP2004519350A (de) |
CN (1) | CN1462222A (de) |
DE (1) | DE10124439A1 (de) |
WO (1) | WO2002094504A1 (de) |
Families Citing this family (39)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10259520A1 (de) * | 2002-12-19 | 2004-07-01 | Robert Bosch Gmbh | Elektrohandwerkzeugmaschine |
DE102004047278A1 (de) * | 2004-09-29 | 2006-04-06 | Hilti Ag | Abdeckeinrichtung für ein Werkzeuggerät |
DE102005061867A1 (de) | 2005-12-23 | 2007-07-05 | Robert Bosch Gmbh | Schutzhaube mit Spannvorrichtung |
DE102005062458A1 (de) * | 2005-12-27 | 2007-07-05 | Robert Bosch Gmbh | Schutzhaube für ein Handwerkszeug |
DE102006022386A1 (de) * | 2006-05-12 | 2007-11-15 | Robert Bosch Gmbh | Schutzhaube für ein Handwerkzeug sowie Handwerkzeug mit Schutzhaube |
DE102006000294A1 (de) * | 2006-06-13 | 2007-12-20 | Hilti Ag | Handwerkzeuggerät mit Schutzhaube |
ATE457849T1 (de) * | 2006-10-07 | 2010-03-15 | Metabowerke Gmbh | Elektrohandwerkzeuggerät, insbesondere ein winkelschleifer mit einer schutzhaube |
DE102006049826A1 (de) * | 2006-10-23 | 2008-04-24 | Robert Bosch Gmbh | Schutzvorrichtung |
DE102006053301A1 (de) | 2006-11-13 | 2008-05-15 | Robert Bosch Gmbh | Handwerkzeugmaschine für ein rotierendes Werkzeug mit 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 |
DE102007000845A1 (de) * | 2007-10-11 | 2009-04-16 | Hilti Aktiengesellschaft | Handwerkzeugmaschine |
DE102007052683A1 (de) * | 2007-11-05 | 2009-05-07 | Robert Bosch Gmbh | Handwerkzeugmaschine |
DE102007052684A1 (de) * | 2007-11-05 | 2009-05-07 | Robert Bosch Gmbh | Handwerkzeugmaschine |
DE102008010977A1 (de) * | 2008-02-25 | 2009-08-27 | Robert Bosch Gmbh | Handwerkzeugmaschine, insbesondere handgeführte Schleifmaschine |
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 |
JP5587079B2 (ja) * | 2010-07-22 | 2014-09-10 | 株式会社マキタ | 可動カバーの取付け構造および切断機 |
US9120202B2 (en) | 2011-06-30 | 2015-09-01 | Black & Decker Inc. | Shield assembly for a power tool |
US9038275B2 (en) * | 2011-09-07 | 2015-05-26 | Dustless Depot, Llc | Reciprocating saw dust shroud |
DE102011089754A1 (de) * | 2011-12-23 | 2013-06-27 | Robert Bosch Gmbh | Schutzhaubenverdrehsicherungsvorrichtung |
DE102012210759A1 (de) * | 2012-06-25 | 2014-01-02 | Robert Bosch Gmbh | Schutzhaubenvorrichtung |
US10021958B2 (en) | 2013-01-14 | 2018-07-17 | Tenacious Holdings, Inc. | Tool safety strap |
USD796836S1 (en) | 2013-09-09 | 2017-09-12 | Tenacious Holdings, Inc. | Lanyard |
USD789188S1 (en) | 2013-09-09 | 2017-06-13 | Tenacious Holdings, Inc. | Lanyard |
USD741060S1 (en) | 2013-09-09 | 2015-10-20 | Tenacious Holdings, Inc. | Lanyard |
US10201889B2 (en) * | 2014-08-06 | 2019-02-12 | Sparky Guard, LLC | Fully rotatable grinder guard assembly and method for making same |
EP3251791B1 (de) | 2016-05-06 | 2019-03-27 | Black & Decker Inc. | Umkehrbarer hebel für eine schutzeinheit für ein elektrowerkzeug |
USD816453S1 (en) | 2016-09-15 | 2018-05-01 | Dustless Depot, Llc | Circular saw dust shroud |
US10293421B2 (en) | 2016-09-15 | 2019-05-21 | Dustless Depot, Llc | Circular saw dust collection shroud |
USD856102S1 (en) * | 2017-03-17 | 2019-08-13 | Eberhard Karls Universitaet Tuebingen | Mounting device |
CN109249084B (zh) * | 2017-07-13 | 2019-08-27 | 苏州宝时得电动工具有限公司 | 护罩打开机构及电动工具 |
US11440160B2 (en) | 2018-03-23 | 2022-09-13 | Paul Mueller Company | Guards for use with power tools and power tools including such guards |
USD945234S1 (en) | 2018-07-26 | 2022-03-08 | Paul Mueller Company | Guard for use with a power tool |
USD908149S1 (en) | 2018-10-23 | 2021-01-19 | Dustless Depot Llc | Angle grinder dust shroud with variable position slots for mounting brackets |
US11123839B2 (en) | 2018-10-23 | 2021-09-21 | Dustless Depot Llc | Grinder dust shroud with input shaft gasket and adjustable mounting mechanism |
US11273505B2 (en) | 2019-03-27 | 2022-03-15 | Dustless Depot, Llc | Circular saw dust collection shroud |
CN112917435A (zh) * | 2021-03-05 | 2021-06-08 | 江苏工程职业技术学院 | 一种带有保护装置的智能电动工具 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3338917A1 (de) * | 1983-10-27 | 1985-05-09 | C. & E. Fein Gmbh & Co, 7000 Stuttgart | Schutzhaubenbefestigung fuer tragbare winkelschleifer |
DE3636601A1 (de) * | 1986-10-28 | 1988-05-05 | Bosch Gmbh Robert | Schutzhaube fuer schleifmaschinen, insbesondere winkelschleifer, und dazu passende befestigungsaufnahme auf diese |
DE3638337A1 (de) * | 1986-11-10 | 1988-05-19 | Licentia Gmbh | Spannvorrichtung fuer die schutzhaube von winkelschleifern od. dergl. elektrowerkzeuge |
DE3940584A1 (de) * | 1989-12-08 | 1991-06-13 | Bosch Gmbh Robert | Schutzhaube fuer handwerkzeugmaschinen, insbesondere schleifmaschinen |
DE19829190B4 (de) * | 1998-06-30 | 2006-12-21 | Robert Bosch Gmbh | Handschleifmaschine |
DE10000701A1 (de) * | 2000-01-10 | 2001-07-12 | Bosch Gmbh Robert | Winkelschleiferschutzhaube |
US6699114B1 (en) * | 2002-04-26 | 2004-03-02 | Benedict Engineering Company, Inc. | Pivotal guards for power hand tools with rotating discs |
-
2001
- 2001-05-18 DE DE10124439A patent/DE10124439A1/de not_active Withdrawn
-
2002
- 2002-04-18 CN CN02801460A patent/CN1462222A/zh active Pending
- 2002-04-18 US US10/333,044 patent/US6988939B2/en not_active Expired - Fee Related
- 2002-04-18 WO PCT/DE2002/001434 patent/WO2002094504A1/de not_active Application Discontinuation
- 2002-04-18 JP JP2002591205A patent/JP2004519350A/ja not_active Withdrawn
- 2002-04-18 EP EP02737804A patent/EP1395393A1/de not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO02094504A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE10124439A1 (de) | 2002-11-21 |
CN1462222A (zh) | 2003-12-17 |
US6988939B2 (en) | 2006-01-24 |
WO2002094504A1 (de) | 2002-11-28 |
JP2004519350A (ja) | 2004-07-02 |
US20040014412A1 (en) | 2004-01-22 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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Extension state: AL LT LV MK RO SI |
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RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: SCHOMISCH, THOMAS Inventor name: HECKMANN, MARKUS Inventor name: KRONDORFER, HARALD Inventor name: HOFMANN, ALBRECHT |
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17Q | First examination report despatched |
Effective date: 20060711 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20070123 |