EP3664964A1 - Dispositif de protection pour une machine-outil portative - Google Patents

Dispositif de protection pour une machine-outil portative

Info

Publication number
EP3664964A1
EP3664964A1 EP18746683.4A EP18746683A EP3664964A1 EP 3664964 A1 EP3664964 A1 EP 3664964A1 EP 18746683 A EP18746683 A EP 18746683A EP 3664964 A1 EP3664964 A1 EP 3664964A1
Authority
EP
European Patent Office
Prior art keywords
protective hood
machine housing
protective
output shaft
flange neck
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Withdrawn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
EP18746683.4A
Other languages
German (de)
English (en)
Inventor
Sinisa Andrasic
Jakob Meier
Marcus Schuller
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP3664964A1 publication Critical patent/EP3664964A1/fr
Withdrawn legal-status Critical Current

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
    • 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
    • B27G21/00—Safety guards or devices specially designed for other wood-working machines auxiliary devices facilitating proper operation of said wood-working machines
    • 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
    • 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

Definitions

  • the invention relates to a protective device according to the preamble of the first claim.
  • Guard anti-rotation device for an angle grinder which is provided for an anti-rotation between the hand tool and a protective hood unit, with a strap that a
  • Anti-rotation range includes a positive locking profile.
  • Guard anti-rotation device has a force flow element, which is intended to reduce a density of a force flow compared to a pure form-fitting profile in at least a part of the anti-rotation region.
  • the invention is based on the object with simple constructive
  • Hand tool in particular an angle grinder, with a machine housing, which has an output shaft with an output axis surrounding flange neck, with one, in particular one
  • Protective hood having protective hood, and with one as a Circlip trained fuse element, which is intended to form in at least one operating state, a rotational security of the guard relative to the machine housing, wherein the machine housing with the protective hood and / or the securing element is detachably connectable.
  • the securing ring has a thread, in particular an internal thread, which is provided in at least one connecting state for movably supporting and holding the protective hood in the axial direction of the output axis relative to the flange neck.
  • the thread of the locking ring may be formed in particular circumferentially around the output axis.
  • the thread of the locking ring can form a screw connection with the protective hood.
  • the retaining ring is provided in at least one
  • the guard should expediently at least or up to 180 ° of a separation or
  • the power tool can be made very compact, so that an optimum depth of cut is achieved, which is usually limited by the protection device, since conventional protections in the radial direction relative to the
  • the protective device according to the invention has a particularly simple receiving or connecting mechanism and even under extreme conditions, such as the bursting of an insert tool, meets the applicable statutory provisions to the utmost satisfaction.
  • the invention will be described below mainly by the example of a particular hand-held machine tool, which is connectable to an insert tool rotatably coupled to the output axis.
  • the insert tool can in this case have a tool axis.
  • the insert tool can be detachably connected to the output shaft such that, in particular, the tool axis and the output axis substantially coincide.
  • the machine housing is intended in particular a housing part of the
  • the machine housing may in particular have a transmission housing.
  • the hand tool should preferably be designed as an angle grinder.
  • Securing element may preferably be releasably connectable by means of a screw connection with the power tool and can thus be separated if necessary, from the power tool to pack them, for example, or to store compact.
  • the protection device with the example of an angle grinder with a protective hood, which surrounds the output shaft is executed.
  • Protective hood can be adjusted in the circumferential direction about the output shaft relative to the machine housing.
  • the protective hood can be a
  • Adjustability in the circumferential direction to lock around the output shaft around by an operator is protected, for example, in a bursting insert tool from injury, with a rotation of the guard is blocked by bursting insert tool parts.
  • the protective hood should be arranged on the machine housing of the power tool and in operation of the
  • Machine tool can be reliably held on the machine housing. If necessary, the protective hood should be able to be loosened and / or radially adjusted without tools and comfortably.
  • the rotational movement can be a clockwise or a left-handed
  • the securing element is intended to clamp the machine housing, in particular the flange neck, in relation to the protective hood, in particular the protective hood collar, in a connection state in the axial direction.
  • the protective device may have a first connection state in which the protective hood is held in a form-fitting manner on the machine housing in the axial direction of the output shaft. It should in particular a
  • the protective device may have a second connection state in which the securing element holds the protective hood in the axial direction of the abrading axis on the machine housing and in particular braced relative to the machine housing. Under a connection state, in particular, a state of
  • Protective device in particular the hand tool machines, are understood, in which the machine housing, in particular the flange neck, is connected to the protective hood and preferably the securing element.
  • an "output shaft” is to be understood as meaning, in particular, a mechanical shaft which is intended to be driven directly or indirectly by a drive unit, in particular by a motor unit.
  • the shaft in particular the axis on which the insert tool can be fastened, projecting approximately centrally from a machine housing, in particular the flange neck, of the handheld power tool and via the machine housing, in particular the Flange neck, protrude.
  • the region of the protective hood which encompasses the machine housing at least in sections completely and in a rotationally adjustable manner, as
  • Guard hood or collar designated and preferably on the machine housing, in particular the flange neck, lockable fixable.
  • output axis and "tool axis” denote fictitious geometric axes of rotation of the power tool or the
  • the insert tool is designed in particular as a grinding or a Trennschreibe.
  • the machine housing in particular the flange neck, has a tooth geometry, in particular a tooth profile, which extends in the axial direction of the output axis.
  • the tooth geometry can have a plurality of points which extend in the axial direction of the
  • the tooth geometry in particular its tapering, can extend in the axial direction of the output axis in a direction pointing toward the machine housing.
  • the tooth geometry have a plurality of teeth.
  • the machine housing in particular the flange neck, has a radial material recess, which extends in the circumferential direction about the output axis.
  • the material recess may be delimited by the tooth geometry in the axial direction of the output shaft.
  • the material recess may be open towards the outside in the radial direction of the output shaft.
  • the material recess may be a cross section of the
  • the material recess may in particular be designed as a circumferential groove around the machine housing.
  • the material recess can extend in a plane, in particular a radial avenue, through 360 °. In this way, a particularly simple and space-saving connection of the guard with the machine housing can be achieved.
  • Protective hood collar with a thread, in particular an external thread, for screw connection with the securing element.
  • the thread in an outer region of the protective hood, in particular of the
  • Guard collar be arranged.
  • the thread may preferably surround the protective collar.
  • the guard can by means of
  • Fuse element form a screw.
  • the thread may in particular be formed circumferentially around the output axis. This allows a reliable connection of the guard against the
  • Machine housing can be achieved.
  • Engaging element which is provided to the protective hood with the machine housing, in particular the flange neck, preferably the
  • the engagement element may be provided to a
  • the engagement element is designed as an engagement projection which extends in the radial direction of the output axis and which engages on an inner region of the protective hood, in particular the
  • the engagement element can protrude in the radial direction in a direction pointing toward the output axis.
  • the engagement element can limit a minimum radial extent of the protective hood, in particular of the protective hood collar, in the radial direction of the output axis.
  • the engagement element can as an engagement pin or a
  • Engage pin be formed.
  • the engagement element may be formed integrally with the protective hood.
  • the tooth geometry can be provided to receive the engagement element in the circumferential direction around the output shaft in a form-fitting manner and to form a rotational securing device of the protective housing relative to the machine housing in at least one operating state.
  • Engagement element can be clamped in at least one operating state in the axial direction of the output shaft against the tooth geometry.
  • Machine recess is provided to the engagement element
  • Material recess be arranged.
  • the engagement element can in the first connection state in the
  • Material recess be arranged and rotatable relative to the
  • Machine housing be stored.
  • the engagement element In the second connection state, the engagement element can be in engagement with the tooth geometry or clamped with respect to the tooth geometry.
  • the securing element can be unscrewed in the second connection state of the protective hood, whereby it contacts, for example, a radially projecting part of the machine housing and braces the guard relative to the machine housing.
  • a rotational movement of the guard against the machine housing to be locked by the engagement member is engaged with the tooth geometry and is braced against the tooth geometry.
  • Adhesive process a Anspritzrea, a punching process, a
  • Laser cutting and / or another the skilled person appear appropriate process, and / or advantageously formed in one piece, such as by a production from a cast and / or by a production in a one- or multi-component injection molding method and particularly advantageous from a single blank.
  • the securing element in particular the securing ring, is screwed in a connecting state such that the securing element moves the protective hood in the axial direction of the output shaft relative to the machine housing and presses the engagement element against the tooth profile and in particular braces.
  • the protective device can be formed in a particularly simple manner.
  • the machine housing in particular the flange neck, has an axial guide groove which is provided to guide the protective hood, in particular the engagement element, in the axial direction through the machine housing, in particular the flange neck.
  • the guide groove may be formed as a guide channel for guiding the engagement member.
  • the guide groove can in the axial direction through the tooth geometry or through the material recess and through the axial extent of
  • the tooth geometry can limit the guide groove in the circumferential direction about the output axis.
  • the guide groove can form a tooth geometry-free region in the circumferential direction about the output axis, along which the engagement element can be guided. This can be in a particularly simple way the
  • Machine housing to be secured.
  • connection state in the radial direction of the output shaft between the securing element, in particular the securing ring, and the Machine housing, in particular the flange neck, is arranged.
  • the securing element can protect the protective hood collar, in particular the thread, against damage during operation.
  • the securing element in particular the securing ring, at least in sections, the protective hood, in particular the protective hood collar, and at least partially the
  • Machine housing in particular the flange neck, in one plane
  • the invention further relates to a hand tool with a machine housing or a protective device according to the invention.
  • the invention further relates to a grinding system comprising an angle grinder with a protective device and provided for driving with the angle grinder grinding or cutting disc.
  • FIG. 1 is a view of an exemplary hand tool of the prior art
  • Fig. 2 is a view of the transmission housing of
  • Fig. 3 is a view of a first embodiment of a
  • FIG. 4 is a view of a part of the protective device of Fig. 3,
  • Fig. 5 is a view of a part of the protective device of Fig. 3 and 6 is a view of a part of the protective device of FIG. 3rd
  • FIG. 1 shows a hand tool machine 13 designed as an angle grinder 13 with a housing 15, with one arranged on the housing 15
  • Additional handle 17 with a cutting disc 19 and the blade 19 at least partially surrounding protective hood 21st
  • the cutting disk 19 is designed for separating and / or grinding workpieces.
  • the cutting disc 19 is universally applicable and is particularly suitable for processing workpieces made of pulp, such as grass, scrub or roots, wood, plastic or a composite.
  • the blade 19 but also for editing, for example
  • Metal, rock or a composite are suitable.
  • the guard 21 is provided for releasably receiving on rotationally driven commercial angle grinders 13.
  • the protective cover 21 may be in a manner already known to a person skilled in the art and for receiving the protective hood
  • Hand tool such as an angle grinder 13 or a circular saw according to the application DE 3740200 AI or as for example a back-action brushcutter according to the application DE 19616764 AI.
  • the housing 15 is designed as a machine housing 25 and comprises a gear housing 27, which surrounds a gear (not shown), in particular an angle gear, and at least one handle housing 29 which at least partially receives a drive unit (not shown) or at least surrounds.
  • the protective cover 21 should expediently at least or up to Cover 180 ° of the blade 19 to protect the operator of the angle grinder 13 from flying sparks.
  • Fig. 2 shows a part of a conventional protective device of the prior art.
  • the protective device is formed on the transmission housing 27, which is connected to the handle housing 29.
  • Fig. 3 shows a protective device according to the invention for an angle grinder 13 with a gear housing 27 having a machine housing 25 having a flange neck 31, with a protective hood collar 33 having guard 21, and with a securing element 35 which is provided, in at least one operating condition to form a rotational security of the protective cover 21 relative to the transmission housing 27.
  • the gear housing 27 is designed releasably connected to the protective cover 21 and the fuse element 35.
  • the flange neck 31 surrounds an output shaft 37 37, which has an output shaft 39.
  • the output shaft 37 protrudes from the flange neck 31.
  • the output shaft 37 directly forms a tool holder, which is intended to receive an insert tool 19.
  • the gear housing 27 has a machine housing 25 having a flange neck 31, with a protective hood collar 33 having guard 21, and with a securing element 35 which is provided, in at least one operating condition to form a rotational security of the protective cover 21 relative to the transmission housing 27.
  • the gear housing 27 is designed
  • Tool holder 23 may be formed from a tool receiving device according to the application DE 20 2013 006 900 Ul or DE 20 2013 006 901 Ul.
  • the output shaft 37 protrudes approximately centrally out of the flange neck 31 and projects beyond the flange neck 31.
  • the securing element 35 is designed as a securing ring 41.
  • the angle grinder 13 can be connected to the insert tool 19, which is coupled in a rotationally movable manner about the output axis 39.
  • the insert tool 19 is designed as a cutting disc 19 or as a grinding wheel.
  • Insert tool 19 may in this case have a tool axis.
  • Insert tool 19 can be releasably connected to the output shaft 37 such that in particular the tool axis and the output shaft 39 substantially coincide.
  • the protective hood collar 33 is formed as a hollow cylinder and extends in the axial direction of the output shaft 39.
  • the protective hood collar 33 delimits the protective hood 21 in an axial direction of the output shaft 39 facing the gearbox 27.
  • Circlip 41 are releasably connectable to the power tool and can therefore be separated if necessary, from the power tool to pack them, for example, or compact storage.
  • the securing element 35 may be integrally connected to the flange neck 31 or the protective hood collar 33.
  • the protective hood collar 33 completely surrounds the flange neck 31
  • the protective cover 21 is adjustable in the circumferential direction U about the output shaft 39 relative to the transmission housing 27.
  • the protective hood 21 has a
  • the protective cover 21 should expediently cover at least or up to 180 ° of a separating or grinding disk 19 and surround the operator of the
  • Use cases such as left / right handed, cutting or grinding to cover the profile of the material to be processed.
  • the securing element 35 designed as a securing ring 41 has an internal thread 43.
  • the retaining ring 41 is in at least one
  • connection state provided to support the protective cover 21 in the axial direction of the output shaft 39 relative to the flange neck 31 to move and hold.
  • the securing ring 41 limits a movement of the flange neck 31 in the axial direction of the output shaft.
  • the circlip 41 is biased in a connected to the protective hood 21 connection state in the axial direction.
  • the thread of the locking ring 41 is formed around the output shaft 39 circumferentially.
  • the internal thread 43 of the securing ring 41 forms with the
  • Guard collar 33 a screw.
  • the flange neck 31 has a tooth geometry 45, which forms a tooth profile 45.
  • the tooth profile 45 extends in the axial direction of the output shaft 39.
  • the tooth profile 45 has a plurality of points 47, which extend in the axial direction of the output shaft 39. Between the Zuspitzungen 47 troughs 48 are formed, which are intended to be part of the
  • the tooth profile 45 has a plurality of teeth.
  • the flange neck 31 also has a radial material recess 49, which extends in the circumferential direction U about the output shaft 39.
  • Material recess 49 limits the tooth profile 45 limited in the axial direction of the output shaft 39.
  • the material recess 49 is open in the radial direction of the output shaft 39 to the outside.
  • the material recess 49 reduces a cross section of the machine housing 25. Die
  • Material recess 49 is formed as a circumferential around the machine housing 25 groove.
  • the material recess 49 extends in a radial axis R by 360 °.
  • the protective hood collar 33 has a thread 51 designed as an external thread 51 for screw connection with the securing ring 41.
  • External thread 51 is arranged in an outer region of the protective hood collar 33.
  • the external thread 51 completely surrounds the protective hood collar 33.
  • the external thread 51 runs around the protective hood collar 33.
  • the protective hood collar 33 has an engagement element 53, which is provided to connect the protective hood 21 with the flange neck 31 or the tooth profile 45 and form and / or in a connected state
  • the engagement member 53 is to provided to limit a rotational movement of the machine housing 25 relative to the protective cover 21. In this case, the engagement element 53 engages between the Zuspitzept 47 of the tooth profile 45 and in the troughs 48 of the tooth profile 45th
  • the engagement member 53 is formed as a in the radial direction of the output shaft 39 extending engagement survey 55, which on a
  • the engagement element 53 projects in the radial direction in a direction pointing toward the output axis 39.
  • the engagement member 53 defines a minimum radial extent of the guard collar 33 in the radial direction of the output shaft 39.
  • the engagement member 53 is formed as an engagement pin and an engagement pin, respectively.
  • the engagement element 53 is formed integrally with the protective hood 21.
  • the tooth profile 45 is provided to receive the engagement element 53 in the circumferential direction U around the output shaft 39 in a form-fitting manner and, in at least one operating state, to form a rotational securing of the protective cover 21 with respect to the flange neck 31.
  • the engagement element 53 is in at least one operating state in the axial direction of the output shaft 39 against the
  • Tooth geometry 45 braced.
  • the machine recess is intended to receive the engagement element 53.
  • the protective device may have at least two connection states in which the engagement element 53 of the protective hood collar 33 in the
  • the protective hood collar 33 is positively secured in a first connection state in the axial direction of the output shaft 39 against unintentional release in the axial direction and held on the flange neck 31.
  • the protective hood collar 33 is rotatably supported relative to the flange neck 31 by the engagement element 53 in FIG.
  • Circumferentially U is movably mounted about the output shaft 39 in the material recess 49.
  • the circlip 41 is screwed in the second connection state such that the circlip 41 moves the protective collar 33 in the axial direction of the output shaft 39 relative to the transmission housing 27 and the
  • the protective hood collar 33 is in the second connecting state, in which the securing element 35, the protective hood 21 in the axial direction of
  • Gear housing 27 clamped in the circumferential direction U rotatably around the
  • Output shaft 39 mounted and forms the anti-rotation.
  • the engagement element 53 is in the second connection state in engagement with the tooth profile 45 and is braced relative to the tooth profile 45.
  • the securing ring 41 is unscrewed in the second connection state of the protective hood 21, whereby it contacts a radial region 57 of the gear housing 27 and braces the protective collar 33 relative to the flange neck 31.
  • the radial region 57 of the gear housing 27 limits the
  • the radial portion 57 is formed as a radial shoulder.
  • the flange neck 31 has an axial guide groove 59, which is provided to the engagement member 53 in the axial direction through the
  • the guide groove 59 is formed as a guide channel for guiding the engagement member 53.
  • the guide groove 59 is bounded in the axial direction by the tooth geometry 45 or by the material recess 49 and by the axial extension of the flange neck 31.
  • Guide groove 59 opens in the axial direction of the output shaft 39 in the
  • the tooth profile 45 limits the guide groove 59 in the circumferential direction U about the output shaft 39.
  • the guide groove 59 forms in the circumferential direction U about the output shaft 39 a tooth geometry-free area along which the engagement member 53 can be performed.
  • the protective hood collar 33 is arranged in a connecting state in the radial direction of the output shaft 39 between the securing ring 41 and the flange neck 31.
  • the retaining ring 41 surrounds at least in sections the

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

L'invention concerne un dispositif de protection pour une machine-outil portative, en particulier une meuleuse d'angle, pourvue d'un carter de machine qui comporte un collet entourant un arbre de sortie présentant un axe de sortie, ledit dispositif étant pourvu d'un capot de protection présentant en particulier une collerette et d'un élément de blocage réalisé sous la forme d'un anneau de blocage, lequel est destiné à former, dans au moins un état de fonctionnement, une sécurité anti-rotation du capot de protection par rapport au carter de machine, le carter de machine pouvant être relié de manière détachable au capot de protection et/ou à l'élément de blocage. Selon l'invention, l'anneau de blocage présente un filet, en particulier un filet intérieur, et est destiné, au moins dans un état de liaison, à supporter et à maintenir le capot de protection de façon mobile par rapport au collet dans la direction axiale de l'axe de sortie.
EP18746683.4A 2017-08-08 2018-07-26 Dispositif de protection pour une machine-outil portative Withdrawn EP3664964A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017213746.0A DE102017213746A1 (de) 2017-08-08 2017-08-08 Schutzvorrichtung für eine Handwerkzeugmaschine
PCT/EP2018/070329 WO2019030010A1 (fr) 2017-08-08 2018-07-26 Dispositif de protection pour une machine-outil portative

Publications (1)

Publication Number Publication Date
EP3664964A1 true EP3664964A1 (fr) 2020-06-17

Family

ID=63042028

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18746683.4A Withdrawn EP3664964A1 (fr) 2017-08-08 2018-07-26 Dispositif de protection pour une machine-outil portative

Country Status (5)

Country Link
US (1) US20200114490A1 (fr)
EP (1) EP3664964A1 (fr)
CN (1) CN110997235A (fr)
DE (1) DE102017213746A1 (fr)
WO (1) WO2019030010A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20240261933A1 (en) * 2023-02-07 2024-08-08 Milwaukee Electric Tool Corporation Angle grinder including non-removable guard

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3740200A1 (de) 1987-11-27 1989-06-08 Black & Decker Inc Tragbare, motorgetriebene kreissaege
DE3828450A1 (de) * 1988-08-22 1990-03-01 Festo Kg Handwerkzeugmaschine, insbesondere winkelschleifer od. dgl.
DE3913898A1 (de) * 1989-04-27 1990-10-31 Licentia Gmbh Einrichtung zur axialen sicherung, zum verriegeln und zum drehverstellen der schutzhaube auf dem spannhals von handwerkzeugmaschinen
DE19616764C2 (de) 1996-04-26 1999-12-09 Stihl Maschf Andreas Rückentragbares Freischneidegerät
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
DE102008040369B4 (de) 2008-07-11 2021-09-23 Robert Bosch Gmbh Schutzhaubenverdrehsicherungsvorrichtung
DE102009017299A1 (de) * 2009-04-11 2010-10-21 Metabowerke Gmbh Schutzhaube für Elektrohandwerkzeuggeräte und Elektrohandwerkzeuggerät
DE102009024427A1 (de) * 2009-06-09 2010-12-16 Metabowerke Gmbh Schutzhaube für Elektrohandwerkzeuggerät und Elektrohandwerkzeuggerät
DE102012210767A1 (de) * 2012-06-25 2014-01-02 Robert Bosch Gmbh Schutzhaubenvorrichtung
NO2884309T3 (fr) 2013-08-01 2018-09-08
DE202013006900U1 (de) 2013-08-01 2014-11-03 C. & E. Fein Gmbh Werkzeugmaschine
WO2015129359A1 (fr) * 2014-02-28 2015-09-03 日立工機株式会社 Outil électrique
EP3300839A1 (fr) * 2016-09-28 2018-04-04 Hilti Aktiengesellschaft Hotte de poussiere pour une machine a meuler

Also Published As

Publication number Publication date
DE102017213746A1 (de) 2019-02-14
CN110997235A (zh) 2020-04-10
US20200114490A1 (en) 2020-04-16
WO2019030010A1 (fr) 2019-02-14

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