EP2020280A2 - Dispositif de recouvrement d'une machine-outil - Google Patents

Dispositif de recouvrement d'une machine-outil Download PDF

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Publication number
EP2020280A2
EP2020280A2 EP20080104133 EP08104133A EP2020280A2 EP 2020280 A2 EP2020280 A2 EP 2020280A2 EP 20080104133 EP20080104133 EP 20080104133 EP 08104133 A EP08104133 A EP 08104133A EP 2020280 A2 EP2020280 A2 EP 2020280A2
Authority
EP
European Patent Office
Prior art keywords
hood part
hood
locking
latching means
pivot point
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Withdrawn
Application number
EP20080104133
Other languages
German (de)
English (en)
Other versions
EP2020280A3 (fr
Inventor
Thomas Blatz
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 EP2020280A2 publication Critical patent/EP2020280A2/fr
Publication of EP2020280A3 publication Critical patent/EP2020280A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B9/00—Portable power-driven circular saws for manual operation
    • B27B9/02—Arrangements for adjusting the cutting depth or the amount of tilting
    • 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
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G19/00—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws
    • B27G19/02—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws for circular saws
    • B27G19/04—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws for circular saws for manually-operated power-driven circular saws
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/872—With guard means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/872—With guard means
    • Y10T83/8722—Static
    • Y10T83/8723—Adjustable

Definitions

  • the invention relates to a covering device of a tool device, which has at least one disc-shaped tool, wherein the covering device a first hood part for partially encompassing the disc-shaped tool, a second hood part, which is pivotally mounted relative to the first hood part at a pivot point, and a locking mechanism for releasably positioning of the second hood part with respect to the first hood part, wherein the locking mechanism has latching means on one of the hood parts and with the latching means latchable counter-latching means on the other hood part.
  • Tooling devices such as cutting and slitting devices, in which the at least one disk-shaped tool is rotationally driven, are provided with a cover device to protect the user and the environment from dust and flying particles.
  • a generic cover device of a tool device with at least one disc-shaped tool is from the EP 1 777 047 A1 known.
  • the second hood part is pivotable about a roller axis forming the pivot point to the first hood part, the disk-shaped tool being gripped by the first hood part and the second hood part overlapping with the first hood part.
  • an adjustable depth stop is provided on the second hood part, which comprises a latching means which can be latched with the counter-latching means arranged on the second hood part, for setting the maximum penetration depth of the disk-shaped tool.
  • a locking mechanism for releasably positioning the second hood part with respect to the first hood part is provided.
  • the locking mechanism comprises two locking lugs arranged on the depth stop and a shaping plate arranged on the first hood part.
  • the known, preassembled cover device can be fixed to the tool device.
  • the second Hood part After setting the desired depth of cut over the depth stop is the second Hood part to stop a stop edge of the depth stop at the free end of the first hood part to this pivot.
  • the free end of the second hood part abuts the ground, wherein the second hood part when immersing the disk-shaped tool in the ground against a spring force by pressure on the cover relative to the first hood part pivots.
  • the latching noses of the locking mechanism engage behind the molded sheet arranged on the first hood part.
  • To release the lock is released by pressure on the depth stop in the direction of the pivot point of the second hood part, the locking between the locking lugs and the forming sheet.
  • the known covering device is easy to use and has proven itself in practice.
  • the object of the invention is to provide a covering device for a tool device with at least one disk-shaped tool, whose structural design is further simplified and which is very stable with respect to the set depth of cut even with power tools larger power classes.
  • the locking mechanism has a pivotably mounted on a bearing point on one of the hood parts actuating element with an actuating portion and with a projecting at an angle thereof locking portion, wherein the locking means is provided at a free end of the locking portion.
  • the locking mechanism for positioning the second hood part with respect to the first hood part keeps the two hood parts already in the desired position to each other when applying the tool device.
  • the protruding from the cover portion of the disc-shaped tool determines the maximum depth of penetration.
  • the actuating element pivots at the bearing point, wherein the locking portion with the locking means out of engagement with the counter-locking means and moves the second hood part relative to the first hood part and then set in the desired position to this again can. Since the function of the power transmission and the suspension in the inventive locking mechanism decoupled from each other are, the required actuation force for cutting force adjustment is independent of the load of the covering after ergonomic needs interpretable.
  • the actuator is advantageously integrally formed, for example, as a plastic injection molded part.
  • the hood parts advantageously each have a radial section and two mutually spaced-apart side sections, which surround this in regions to form a receiving space for the disk-shaped tool.
  • One of the hood parts has a distance of its side portions to each other, which is smaller than the distance of the side portions of the other hood part.
  • the latching means has correspondingly advantageously at least two correspondingly spaced latching elements, which comprise the hood part partially for latching with the counter-latching means in a latching position in which the latching means is latched to the counter-latching means.
  • the actuating element is arranged on a free, with respect to the pivot point of the second hood part radial end portion of a hood part, which allows a simple structural and stable design of the cover.
  • a spring means for spring loading of the actuating element is provided in a detent position between the actuating portion of the actuating element and the radial outer side of a hood part with respect to the pivot point.
  • the spring means acts on the actuating portion advantageously radially outward, so that the locking portion is pressed with the locking means in the direction of the counter-latching means and in the detent position in which the latching means is latched with the counter-latching means is held.
  • the spring means is, for example, a bent leaf spring with a first leg, which bears against the radial outside of the corresponding hood part, and with a second leg, which bears radially on the inside of the actuating section.
  • the counter-locking means are formed as in relation to the fulcrum radially outwardly receiving receiving recesses for the latching means, which are arranged to form a grid over a peripheral portion of a hood part in corresponding, advantageously regular intervals from each other.
  • the selected distances are dependent on the arrangement of the receiving recesses on the hood part.
  • the locking means arranged on the locking section penetrates into at least one of the forwardly open receiving recesses and ensures sufficient locking of the second hood part on the first hood part.
  • the grid is advantageously matched to the penetration depths, which are usually generated with the disk-shaped tool or with the tool device.
  • a marker with a corresponding scale is assigned to the grid.
  • each receiving recess in each case has mutually facing lateral limiting sections, the distance of which increases at least in regions in the direction of the opening of the receiving recess.
  • the receiving recess narrows at least partially in the direction of the pivot point of the second hood part.
  • the latching means has a contour that can be brought into contact with the receiving recess, which contour is advantageously at least partially larger than the corresponding contour of the receiving recess.
  • one of the hood parts has a first end which can be brought into overlap with the other hood part, and the first end of the one hood part facing the limiting section of each receiving recess has a slope which extends from the opening of the receiving recess at an angle to the one through the pivot point of the second Hood part extending radials is arranged.
  • the receiving recess thus has an insertion section, which simplifies the insertion of the locking means on the locking portion of the actuating element in the receiving recess.
  • the second hood part can be pulled out without actuation of the actuating element from the first hood part, since the latching means slides along the slope when swinging out of the second hood part.
  • the second hood part at its, the first end facing away from the second free end on a handle element for pivoting the second hood part.
  • the locking means is a wedge tapering towards the free end of the locking portion, which can be easily inserted into the receiving recess.
  • the wedge-shaped configuration is matched to the configuration of the receiving recess, which ensures a secure fixation of the second hood part on the first hood part.
  • the distance of the bearing point of the actuating element to the pivot point of the second hood part is greater than the distance of the counter-locking means to the pivot point of the second hood part. If pressure is exerted on the cover device, the actuating element pivots counterclockwise, wherein the locking means at the free end of the Arresting section is locked more strongly with the counter-locking means. Due to the created self-locking of the locking mechanism an automatic opening of the cover device during operation of the tool device is additionally counteracted.
  • one of the hood parts has a first end which can be brought into overlap with the other hood part and the counter-latching means and a guide section for the latching means is provided in the end area of the first end, wherein the guide section decreases in a decreasing manner from the counter-latching means closest to the first end of the hood part radial distance with respect to the pivot point of the second hood part in the direction of the first end of the one hood part extends.
  • the second hood part can be completely swung out of the first hood part.
  • the insertion section allows the pivoting of the second hood part into the first hood part without an actuation of the actuating element until the latching means again couples with one of the counter-latching means.
  • the in the FIGS. 1 to 3 illustrated covering device 11 of a tool device, not shown here, which has at least one disc-shaped tool 6, has a first hood part 12 for partially encompassing the disk-shaped tool 6 and can be fixed to the tool device.
  • a connection piece 13 for the connection of a vacuum source, such.
  • a vacuum cleaner As a vacuum cleaner, provided for the extraction of accumulating in the cover 11 by processing a substrate accumulating dust and particles.
  • rollers 14 are provided for guiding the cover 11 on the ground.
  • the hood part 12 has a radial section 17 and two side sections 18 arranged at a distance E from one another and a free end 19.
  • the cover 11 has a second hood part 22, which is pivotally mounted at a pivot point 15 which is formed by the roller axis of the rollers 14 on the first hood part 12 with respect to this.
  • the second hood part 22 has likewise a radial section 35 and two side sections 36 arranged at a distance F from one another.
  • the distance F of the side portions 36 to each other is smaller than the distance E of the side portions 18 of the first hood part 12, so that when pivoting the second hood part 22 this can dip telescopically into the first hood part 12.
  • the second hood part 22 has a first end 33 which can be brought into overlap with the first hood part 12 and a second, free end 34 lying opposite the first end 33.
  • a locking mechanism 41 for adjusting the maximum penetration depth of the disc-shaped tool 6 and for releasably securing the second hood part 22 relative to the first hood part 12 is provided.
  • the locking mechanism 41 comprises a bearing at a bearing point pivotally mounted on the first hood part 12 actuator with an actuating portion 43 and at an angle projecting therefrom locking portion 44.
  • the actuator 42 is at a free, with respect to the pivot point 15 of the second hood part 22 radial End region of the first hood part 12 is arranged.
  • a locking means 46 is provided at a free end of the locking portion 44, wherein the locking means 46 can be latched with counter-locking means 23 on the second hood part 22.
  • a spring means 47 is provided between the actuating portion 43 of the actuating element 42 and the radial outer side 16 of the radial portion 17 of the first hood part 12.
  • the counter-locking means 23 are formed as in relation to the pivot point 15 of the second hood part 22 radially outwardly receiving recesses 29 for the locking means 46, wherein the counter-locking means 23 are arranged on both side portions 36 of the second hood part 22 to a peripheral portion 24. To form a grid, the receiving recesses 29 are arranged in corresponding, advantageously regular intervals from one another. Adjacent to the counter-locking means 23, a scale 25 is provided, which indicates the set penetration depth of protruding from the second hood part 22 tool 6 to the user.
  • Each receiving recess 29 has mutually facing lateral limiting sections 26 and 27 (see FIG. 3 ).
  • the one, the second end 34 of the second hood part 22 facing the boundary portion 26 extends substantially along a through the pivot point 15 of the second hood part 22 extending radial.
  • the opposite, the first end 33 of the second hood part 22 facing the limiting section 27 has a slope 28 which is disposed starting from the opening 30 of the receiving recess 29 at an angle to a through the pivot point 15 of the second hood part 22 extending radial.
  • the distance of Limiting sections 26 and 27 to each other thus increases in regions in the direction of the opening 30 of the receiving recess 29th
  • the locking means 46 comprises two wedges tapering towards the free end of the locking section 44, which are arranged at a distance from each other and in the rest position surround the second hood part 22 in regions.
  • the outer contour of the wedges is substantially adapted to the configuration of the opening 30 of the counter-latching means 23 forming receiving recess 29.
  • the radial distance A of the bearing point 45 of the actuating element 42 to the pivot point 15 of the second hood part 22 is greater than the radial distance B of the counter-locking means 23 to the pivot point 15 of the second hood part 22nd
  • the second hood part 22 has in the end region of its first end 33 a guide section 31 for the latching means 46.
  • the guide section 31 extends from the counter-latching means 23 closest to the first end 33 of the second hood section 22 in a decreasing radial distance with respect to the pivot point 15 of the second hood section 22 in the direction of the first end 33 of the second hood section 22.
  • a grip section 32 is provided in the end region of the second end of the second hood part 22, on the radial outer side with respect to the pivot point 15, for easy actuation of the second hood part 22 during pivoting about the pivot point 15.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Harvester Elements (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
EP20080104133 2007-07-30 2008-05-28 Dispositif de recouvrement d'une machine-outil Withdrawn EP2020280A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710000415 DE102007000415A1 (de) 2007-07-30 2007-07-30 Abdeckvorrichtung eines Werkzeuggerätes

Publications (2)

Publication Number Publication Date
EP2020280A2 true EP2020280A2 (fr) 2009-02-04
EP2020280A3 EP2020280A3 (fr) 2011-10-12

Family

ID=39884102

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080104133 Withdrawn EP2020280A3 (fr) 2007-07-30 2008-05-28 Dispositif de recouvrement d'une machine-outil

Country Status (3)

Country Link
US (1) US7980924B2 (fr)
EP (1) EP2020280A3 (fr)
DE (1) DE102007000415A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012207571A1 (de) * 2012-04-27 2013-10-31 Robert Bosch Gmbh Abdeckvorrichtung mit Staubabsaugung bei Verwendung mit einem Elektrowerkzeug
CN105904024A (zh) * 2016-06-20 2016-08-31 宁波市天铭工具有限公司 电动圆锯
CN105921812A (zh) * 2016-06-20 2016-09-07 宁波市天铭工具有限公司 手持式电动圆锯

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8747190B2 (en) * 2010-04-08 2014-06-10 Mark Smith Tool for removing grout, mortar and the like
US8480457B2 (en) * 2010-12-16 2013-07-09 Robert Kundel, JR. Surface preparation apparatus
EP3081335B1 (fr) * 2015-04-13 2020-02-19 Black & Decker Inc. Ensemble de protection pour outil électrique
JP6431445B2 (ja) * 2015-06-18 2018-11-28 株式会社マキタ 切断機の集塵カバー
JP6431446B2 (ja) * 2015-06-18 2018-11-28 株式会社マキタ 切断機の集塵カバー
DE102017107223A1 (de) 2016-04-07 2017-10-12 Ferrobotics Compliant Robot Technology Gmbh Robotergestützte schleifvorrichtung
IT201700070652A1 (it) * 2017-06-23 2018-12-23 Dario Toncelli Macchina combinata di taglio e bisellatura per lastre di materiale lapideo o litoide
CN108032195B (zh) * 2017-11-27 2020-04-14 宁波江北珂达汽车技术有限公司 鼓式刹车片打磨机床
EP3659763B1 (fr) 2018-11-28 2023-05-31 Black & Decker Inc. Outil électrique

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1777047A1 (fr) 2005-10-21 2007-04-25 HILTI Aktiengesellschaft Couvercle de protection

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD52796A (fr) *
US2741282A (en) * 1954-09-02 1956-04-10 Merlin A Wieting Adjustable guard and depth gauge for a power operated disc saw
US3701369A (en) * 1970-07-27 1972-10-31 Skil Corp Circular saw
US4693008A (en) * 1985-05-07 1987-09-15 Mallard Products, Incorporated Releasable separate member latching device for a portable hand tool
JP2517369Y2 (ja) * 1990-06-21 1996-11-20 リョービ株式会社 卓上切断機
US5974674A (en) * 1998-07-01 1999-11-02 Kelly; Daniel E. Undercut saw
DE19923145A1 (de) * 1999-05-20 2000-11-23 Hilti Ag Absaughaube für handgeführte Trennschleifer
DE10110119A1 (de) * 2001-03-02 2002-09-12 Bosch Gmbh Robert Handwerkzeugmaschine
US6748660B2 (en) * 2002-05-15 2004-06-15 John P. Buser Debris-collection device for a power saw
US6994007B2 (en) * 2002-07-09 2006-02-07 Black & Decker Inc. Chop saw
DE102004047277A1 (de) * 2004-09-29 2006-04-06 Hilti Ag Abdeckvorrichtung für ein Werkzeuggerät

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1777047A1 (fr) 2005-10-21 2007-04-25 HILTI Aktiengesellschaft Couvercle de protection

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012207571A1 (de) * 2012-04-27 2013-10-31 Robert Bosch Gmbh Abdeckvorrichtung mit Staubabsaugung bei Verwendung mit einem Elektrowerkzeug
DE102012207571B4 (de) 2012-04-27 2021-11-11 Robert Bosch Gmbh Abdeckvorrichtung mit Staubabsaugung bei Verwendung mit einem Elektrowerkzeug
CN105904024A (zh) * 2016-06-20 2016-08-31 宁波市天铭工具有限公司 电动圆锯
CN105921812A (zh) * 2016-06-20 2016-09-07 宁波市天铭工具有限公司 手持式电动圆锯

Also Published As

Publication number Publication date
EP2020280A3 (fr) 2011-10-12
US7980924B2 (en) 2011-07-19
US20090036043A1 (en) 2009-02-05
DE102007000415A1 (de) 2009-02-05

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