WO2021136624A1 - Dispositif pour machine-outil portative, machine-outil portative comprenant ce dispositif et accessoire comprenant ce dispositif - Google Patents

Dispositif pour machine-outil portative, machine-outil portative comprenant ce dispositif et accessoire comprenant ce dispositif Download PDF

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Publication number
WO2021136624A1
WO2021136624A1 PCT/EP2020/083937 EP2020083937W WO2021136624A1 WO 2021136624 A1 WO2021136624 A1 WO 2021136624A1 EP 2020083937 W EP2020083937 W EP 2020083937W WO 2021136624 A1 WO2021136624 A1 WO 2021136624A1
Authority
WO
WIPO (PCT)
Prior art keywords
hood
tool device
attachment
machine tool
fixing
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.)
Ceased
Application number
PCT/EP2020/083937
Other languages
German (de)
English (en)
Inventor
Manfred Lutz
Thomas Schomisch
Kinan Matar
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
Priority to US17/788,197 priority Critical patent/US20230025492A1/en
Priority to EP20816971.4A priority patent/EP4084928A1/fr
Priority to CN202080090552.XA priority patent/CN114901425A/zh
Publication of WO2021136624A1 publication Critical patent/WO2021136624A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • 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

  • Hand machine tool device hand machine tool with the hand machine tool device and accessories with the hand machine tool device
  • a hand tool machine device for a hand tool machine, in particular an angle grinder, with at least one attachment hood for connection to a protective hood for at least partially covering egg nes work tool of the hand machine tool.
  • the invention is based on a hand machine tool device for a hand machine tool, in particular an angle grinder, with at least one attachment hood for connection to a protective hood for at least partially covering a work tool of the hand machine tool.
  • the add-on hood has at least one form-locking element which is provided to interact with a collar-shaped and free-standing outer region of the protective hood that extends in a circumferential direction and at least to contribute to the connection.
  • the inventive design of the hand machine tool device can advantageously be improved ease of use for a user.
  • the connection of the add-on hood to the protective hood by means of the form-fit element makes a particularly simple and / or fast one Attachment of the add-on hood to the protective hood is possible.
  • a handheld power tool device with a high degree of functionality and flexibility can be provided before geous.
  • the protective hood can be used without the attachment hood as a roughing and / or grinding protection hood and can also be used in conjunction with the attachment hood as a separating protection hood.
  • occupational safety for a user can advantageously be increased.
  • the particularly simple and fast connection can advantageously motivate a user to adhere to work safety regulations for work which require the use of a protective hood.
  • manufacturing costs and thereby also acquisition costs for a user can advantageously be reduced.
  • the manufacture of a mounting hood is less expensive than the manufacture of a complete, one-piece protective hood.
  • the attachment hood is compatible with most of the common protective hoods available on the market, so that by purchasing an accessory with a handheld power tool device according to the invention, a protective hood for a handheld power tool that is already in their possession can advantageously be supplemented with a mounting hood and in combination with the Can use the attachment hood as a protective hood.
  • a “handheld power tool device” can in particular mean a part, in particular a functional component, in particular a construction and / or functional component, of a handheld power tool or a part, in particular a functional component, in particular an additional functional component, of an accessory for a handheld power tool become.
  • the protective hood forms in particular at least one protective surface which, in an operating state of the handheld power tool, covers at least a partial area of a first main surface of the work tool.
  • the first main surface is one, in the operating state of the handheld power tool, a largest side surface of the work tool facing a drive unit of the handheld power tool.
  • a second main surface of the work tool can in the operating state in particular without a cover be arranged by the protective hood.
  • the second main surface of the work tool is a largest side surface of the work tool which faces away from the operating state of the drive unit of the handheld power tool and which in the operating state particularly faces a workpiece to be machined.
  • the protective hood can in particular be designed as a roughing and / or grinding protective hood, in particular for machining processes with large chip volumes occurring on the workpiece side.
  • the attachment hood is provided in particular to cover the second main surface of the work tool at least partially.
  • the add-on hood is intended in particular to form a separating protective hood in conjunction with the protective hood, in particular a separating protective hood of type C according to the standard EN 62841-2-3.
  • “At least partial coverage” should be understood to mean, in particular, a coverage of a partial area of an object which corresponds to at least 20%, advantageously at least 30%, particularly advantageously at least 40%, preferably at least 45% and particularly preferably at least 50% of a total surface of the object .
  • An “outer area of the protective hood” should in particular be understood to mean an area of the protective hood which comprises an outer edge delimiting an extension of the protective hood and which extends in the direction of the second main surface of the working tool.
  • Provided is to be understood in particular to be specially designed and / or specially designed.
  • the fact that an object is provided for a specific function is to be understood in particular to mean that the object fulfills and / or executes this specific function in at least one application and / or operating state.
  • the add-on hood has at least one fixing unit for fixing an angular position of the add-on hood relative to the protective hood.
  • a fixation of the connection of the attachment hood on the protective hood can advantageously be made possible.
  • the fixation by the fixation unit can take place positively and / or non-positively.
  • the fixing by the fixing unit by means of a clamping connection and / or a latching connection and / or a clamping connection and / or a Screw connection and / or the like is provided.
  • the add-on hood and the protective hood advantageously have at least essentially the same large extent with respect to a circumference of the work tool of the hand-held power tool.
  • “at least essentially” should be understood to mean in particular that a deviation from a predefined value deviates in particular by less than 25%, preferably less than 10% and particularly preferably less than 5% of the predefined value.
  • an “angular position” should be understood to mean, in particular, an angle of a circular sector of the working tool which, in a state in which the attachment hood is connected to the protective hood and fixed by means of the fixing unit, is only at least partially covered by the protective hood.
  • the protective hood and the attachment hood each at least partially cover the same circular sector of the work tool, with the protective hood in the area of the circular sector, the first main surface and the attachment hood in the same area of the circular sector at least partially covers the second main surface of the working tool opposite the first main surface.
  • the protective hood covers the first main surface of the work tool in an area of a circular sector at an angle of 90 °, while the second main surface of the working tool in the area of this circular sector is not covered by the attachment hood.
  • the fixing unit can be provided for fixing in exactly one specific angular position of the add-on hood relative to the protective hood. It is advantageously proposed that the fixing unit light the fixation in a user-selectable angular position between the add-on hood and the protective hood. In this way, flexibility for a user can advantageously be improved.
  • the fixing unit could enable fixing in various levels of angular positions that can be selected by the user.
  • the fixing unit preferably enables the fixing to be continuously adjusted in an angular position freely selectable by the user.
  • the fixing unit have at least one fixing element which is designed as a clamping lever. In this way, a particularly simple and, in particular, tool-free fixing of the attachment hood to the protective hood can advantageously be made possible.
  • a “clamping lever” is to be understood in particular as an operating part which provides a clamping force for fixing a first object to a second object.
  • a fixation by means of the clamping lever can be produced without tools and can be released again without tools.
  • the clamping lever can in particular be designed as a clamping lever and in particular have a clamping hook or the like, which engages and / or these for fixing in a counter-contour, for example a tab or a groove or a recess or an edge, in particular an edge of the protective hood is partially encompassed and braced with this mating contour.
  • the clamping lever can in particular be designed as a tensioner, quick release or eccentric lever.
  • the clamping lever can in particular have a lever element which can be connected to a further element of the clamping lever, in particular a bolt or an elastic clamping element, and which can be clamped for fixation by the lever element.
  • the fixing unit have at least one fixing element which is designed as a clamping screw.
  • the clamping screw advantageously forms at least one contact surface for fixation.
  • the clamping screw has at least one male thread.
  • the external thread of the clamping screw can thread as a Vollge or be designed as a partial thread.
  • the clamping screw can be designed in one piece, with the external thread of the clamping screw being able to be screwed into a corresponding internal thread in the add-on housing in particular for the fixing.
  • the contact surface can in particular be designed as a flat underside of the clamping screw.
  • the clamping screw can be formed in several parts, in particular in two parts.
  • the multi-part clamping screw can have an, in particular cylindrical, connecting element, for example a bolt, in particular a threaded bolt, and / or a threaded rod or the like, which in particular has the external thread de, and at least one counter-connecting element corresponding to the connecting element, for example a clamping and / or clamping nut, which in particular can have an internal thread corresponding to the external thread of the connecting element, and / or a dowel pin and / or a split pin and / or the like.
  • the pressing surface could, in particular, be arranged on the cylindrical connecting element and, in particular, be formed in one piece with it.
  • the contact surface is designed as a washer and / or as an underlay rubber or the like.
  • the fixing unit has at least one fixing element which is designed as a stop element.
  • the stop element can, for example, be designed as a gripping element and provided for the purpose of engaging around a partial area of the protective hood, in particular the outer region of the protective hood, in particular in a form-fitting manner, for the purpose of fixing.
  • the stop element could be designed as a latching element, for example a latching cam or the like, and provided for fixing with a counter-latching element arranged on the protective hood, for example a latching groove or a latching opening or the like, and / or with an outer edge of the To lock the protective cover.
  • the fixing unit have at least one fixing element which is designed as a wedge element.
  • This advantageously enables a particularly simple, in particular tool-free, fixable and releasable fixation to be made possible.
  • a simple release of the fixation is made possible even in the case of heavy soiling in the area of the fixation unit, which can be caused, for example, by cold sparks or the like.
  • a “wedge element” is intended in particular to mean an element with at least two tapering side surfaces, which form at least one wedge surface which, for fixing with at least one further surface, in particular a surface of the protective hood and / or the form-fitting element, interacts and which maintains the Fi xing by means of at least one force, in particular a frictional force, enables chen.
  • the form-fit element is designed as an annular holding element.
  • the holding element is “ring-shaped” is to be understood in this context in particular as the fact that a largest extent of the holding element has the shape of a segment of a circle, at least in a state of a form fit with the outer region of the protective hood.
  • the annular holding element can in particular extend along an entire circumferential extent of the collar-shaped and free-standing outer region of the protective hood.
  • the ring-shaped partial element extends over a partial circumference of the collar-shaped and free-standing outer area of the protective hood.
  • the ring-shaped part element could for example be designed as a rigid element, the main extent of which corresponds essentially to the circumferential extent or a partial area of the circumferential extent of the collar-shaped and free-standing outer area of the protective hood.
  • the annular Garele element is designed as an elastic element and made of an elastic work material, for example from a plastic from the group of elastomers ago.
  • An “elastic element” is to be understood in particular as an element that can be repeatedly deformed without the element being mechanically damaged or destroyed, and which, in particular after deformation, automatically strives to return to a basic shape.
  • the add-on hood has at least one protective element for protecting the outer area of the protective hood from damage.
  • the protective element can, for example, have a textile fabric, for example felt or the like, and / or be formed therefrom.
  • the protective element is designed as an elastic element, for example as a rubber lip or the like.
  • the form-fitting element in particular that designed as an annular holding element Form-fit element, at the same time acts as the protective element to protect the outer area of the protective hood from damage.
  • the add-on hood comprises a first add-on hood element and a second add-on hood element that can be connected to the first add-on hood element in a form-fitting manner.
  • the first attachment hood element can in particular have the form-fit element and in particular can be connected to the protective hood without the second attachment hood element.
  • the first attachment element provides a first protective function of the attachment hood, for example a cover for a first sub-area of the work tool of the handheld power tool
  • the second attachment element provides a second protective function of the attachment hood, in particular a supplement to the first protection function, for example a cover a second sub-area of the work tool of the handheld power tool.
  • the first add-on cover element and the second add-on cover element could be positively connected to one another in an angular position offset relative to one another. In this way, a particularly large area of a circular sector of the second main surface of the working tool can advantageously be covered by the cover hood.
  • the first add-on hood element and the second add-on hood element could cooperate for the connection with the protective hood and in particular form a common positive-locking element.
  • the first attachment hood element interacts with a first side of the outer area of the protective hood and the second attachment hood element interacts with a second side of the outer area.
  • areas of the first attachment hood element and of the second attachment hood element form the fixing unit and that the attachment hood can be fixed relative to the protective hood without further fixing elements.
  • the first attachment hood element could have a first geometry, for example in the form of a locking cam, which engages in a second geometry of the second attachment hood element, for example a locking recess, for fixing purposes.
  • the fixing unit be arranged between the first add-on hood element and the second add-on hood element.
  • the fixing unit in addition to fixing the mounting hood in the angular position relative to the protective hood, also advantageously fixes the positive connection between the first mounting hood element and the second mounting hood element.
  • a fixing element of the fixing unit arranged between the first add-on cover element and the second add-on cover element is designed as a wedge element.
  • the second add-on hood element can have a recess through which the fixing unit can be actuated.
  • the handheld power tool device according to the invention is not intended to be restricted to the application and embodiment described above.
  • the hand-held power tool device according to the invention can have a number of individual elements, components and units that differs from a number of individual elements, components and units mentioned herein in order to fulfill a mode of operation described herein.
  • values lying within the stated limits should also be deemed disclosed and can be used as required.
  • FIG. 1 shows a hand machine tool with a hand tool machine device comprising a protective hood and an attachment hood with a form-fit element and a fixing unit in a schematic exploded view
  • FIG. 2 the attachment hood with the form-fitting element and the Fixie purity in a schematic representation
  • 3 shows a schematic representation of the attachment hood in connection with the protective hood
  • FIG. 4 shows a schematic top view of an accessory for a hand machine tool, with a hand machine tool device comprising a protective hood and an attachment hood with a form-fitting element and a fixing unit in a further exemplary embodiment
  • FIG. 5 shows a schematic sectional view of the fixing unit of the exemplary embodiment of FIG. 4
  • FIG. 6 shows a schematic plan view of an accessory for a hand machine tool, with a hand machine tool device comprising a protective hood and an attachment hood with a fixing unit in a further exemplary embodiment
  • FIG. 7 shows a schematic sectional illustration of the fixing unit of the exemplary embodiment of FIG. 6,
  • FIG. 8 shows a schematic top view of an accessory for a hand machine tool, with a hand machine tool device comprising a protective hood and an attachment hood with a fixing unit in a further exemplary embodiment
  • FIG. 9 shows a schematic exploded view of the handheld power tool device of the exemplary embodiment in FIG. 8
  • FIG. 10 shows a schematic exploded view of an accessory for a handheld power tool, with a handheld power tool machine comprising a protective hood and an attachment hood with a fixing unit in a further exemplary embodiment
  • Fig. 11 is a schematic side view of an accessory for a handheld power tool, with a handheld power tool device comprising a protective hood and an add-on hood with a fixing unit in a further embodiment,
  • FIG. 12 shows a schematic sectional view of the hand tool machine device of the exemplary embodiment in FIG. 11
  • FIG. 13 shows a schematic plan view of an accessory for a hand machine tool, with a hand machine tool device device in a further embodiment, comprising a protective hood and an attachment hood with a first attachment hood element and a second attachment hood element and a fixing unit arranged in between.
  • FIG. 14 shows a schematic exploded view of the hand tool machine device of the exemplary embodiment in FIG. 13, and FIG.
  • FIGS. 13 and 14 shows a schematic side view of the handheld power tool device of the exemplary embodiment in FIGS. 13 and 14.
  • FIG 1 shows a handheld power tool 50a.
  • the handheld power tool 50a is designed as an angle grinder.
  • the handheld power tool 50a has a handheld power tool device 10a.
  • the hand tool machine device 10a has an attachment hood 12a.
  • the attachment hood 12a is provided for connection to a protective hood 14a of the handheld machine tool device 10a.
  • the protective hood 14a is provided to partially cover a working tool 16a of the handheld power tool 50a.
  • the add-on hood 12a has a form-fit element 18a.
  • the interlocking element 18a is provided to interact with a collar-shaped and free-standing outer region 22a of the protective hood 14a running in a circumferential direction 20a and at least to contribute to the connection of the attachment hood 12a to the protective hood 14a.
  • FIG. 2 shows the add-on hood 12a with the form-fitting element 18a.
  • the interlocking element 18a is designed as a projection of the attachment hood 12a.
  • the add-on hood 12a has a retaining lip 68a.
  • the retaining lip 68a is seen to cooperate with a main protective surface 70a of the protective hood 14a.
  • the add-on hood 12a has a fixing unit 24a.
  • the fixing unit 24a is provided for fixing an angular position 26a of the attachment hood 12a relative to the protective hood 14a.
  • the fixing unit 24a of the add-on hood 12a comprises a fixing element 28a.
  • the fixing element 28a is designed as a clamping lever 30a.
  • the clamping lever 30a has a lever element 72a and a clamping hook element 74a.
  • FIG. 3 shows the attachment hood 12a in connection with the protective hood 14a.
  • the form-fit element 18a interacts with the outer region 22a of the protective hood 14a.
  • the clamping hook element 74a of the fixing element 28a embodied as a clamping lever 30a engages around a side edge 76a of the protective hood 14a.
  • the connection can be fixed by a user by means of the lever element 72a connected to the clamping hook element 74a.
  • FIGS. 4 to 15 Further exemplary embodiments of the invention are shown in FIGS. 4 to 15.
  • the following descriptions and the drawings are essentially limited to the differences between the exemplary embodiments, whereby with regard to identically labeled components, in particular with regard to components with the same reference numerals, in principle also to the drawings and / or the description of the other exemplary embodiments, in particular FIGS to 3, can be referenced.
  • the letter a is placed after the reference numerals of the exemplary embodiment in FIGS. 1 to 3.
  • the letter a is replaced by the letters b to g.
  • FIGS. 4 and 5 An accessory 60b for a handheld power tool (not shown) is shown in FIGS. 4 and 5.
  • the accessory 60b comprises a handheld power tool device 10b.
  • the handheld power tool device 10b differs from the handheld power tool device 10a from the exemplary embodiment of FIGS. 1 to 3 with regard to a form-fit element 18b and with regard to a fixing unit 24b of an attachment hood 12b.
  • the form-fit element 18b is designed as a projection of the add-on hood 12b that runs continuously in a circumferential direction 20b.
  • the attachment hood 12b can be pushed onto the protective hood 14b.
  • the form-locking Selement 18b a collar-shaped and free-standing outer region 22b of the protective hood 14b running in the circumferential direction 20b in a form-fitting manner.
  • the attachment hood 12b is rotatable relative to the protective hood 14b.
  • the fixing unit 24b is provided for fixing an angular position 26b of the add-on hood 12b and a protective hood 14b. An angular position 26b can be selected by a user.
  • the fixing unit 24b has a fixing element 28b.
  • the fixing element 28b is designed as a clamping screw 32b. By means of the clamping screw 32b of the fixing unit 24b, the attachment hood 12b can be fixed to the protective hood 14b in the angular position 26b that can be selected by the user.
  • FIG. 5 shows a section through the fixing unit 24b of the add-on hood 12b and through part of the protective hood 14b.
  • the fixing unit 24b has a receiving thread 46b. To fix the clamping screw 32b is rotated into the receiving thread 46b. A pressing surface 48b of the clamping screw 32b is pressed against the protective hood 14b for the purpose of fixing.
  • FIGS. 1 A further exemplary embodiment of an accessory 60c for a handheld power tool (not shown) is shown in FIGS.
  • the accessory 60c has a handheld power tool device 10c.
  • the handheld power tool device 10c differs from the handheld power tool device 10b of the exemplary embodiment in FIGS. 4 and 5 essentially with regard to a fixing unit 24c which is designed differently than the fixing unit 24c.
  • the fixing unit 24c is provided for fixing an angular position 26c of an add-on hood 12c and a protective hood 14c.
  • the angular position 26c can be selected by a user.
  • the fixing unit 24c has a fixing element 28c.
  • the fixing element 28c is designed as a clamping screw 32c.
  • the clamping screw 32c is designed in two parts.
  • the clamping screw 32c comprises a threaded bolt 52c and a clamping nut 54c.
  • the threaded bolt 52c is inserted through a recess 56c in the add-on hood 12c.
  • a pressing surface 48c of the threaded bolt 52c points in the direction of an outer area 22c of the protective hood 14c.
  • the add-on hood 12c has a protective element 40c for protecting an outer region 22c of the protective hood 14c from damage.
  • the protective element 40c is arranged between the outer region 22c and the contact surface 48c of the threaded bolt 52c and consists of a felt fabric.
  • the clamping nut 54c is screwed from an outside 58c of the attachment hood 12c onto a thread of the threaded bolt 52 so that the contact surface 48c is pressed against the protective element 40c.
  • FIGS. 8 and 9 A further exemplary embodiment of an accessory 60d for a handheld power tool (not shown) is shown in FIGS. 8 and 9.
  • the accessory 60d has a handheld power tool device 10d.
  • the handheld tool machine device 10d differs from the preceding exemplary embodiments with regard to the configuration of a form-fit element 18d of an attachment hood 12d and with regard to a fixing unit 24d of the attachment hood 12d.
  • the form-fit element 18d is designed as an annular holding element 38d.
  • the annular holding element 38d has a rubber lip 62d.
  • the rubber lip 62d of the annular holding element encloses a collar-shaped and free-standing outer region 22d of a protective hood 14d running in a circumferential direction 20d in a form-fitting manner.
  • the rubber lip 62d also serves as a protective element 40d to protect the outer area 22d of the protective hood 14d from damage.
  • the fixing unit 24d is provided for fixing an angular position 26d of the add-on hood 12d and a protective hood 14d.
  • the angular position 26d can be selected by a user.
  • the fixing unit 24d has a fixing element 28d.
  • the fixation element 28d is designed as a clamping screw 32d.
  • the clamping screw 32d comprises a clamping nut 64d and a threaded bolt 52d.
  • the threaded bolt 52d is integrally connected to the annular holding element 38d. For the purpose of fixing, the threaded bolt 52d is guided through a recess 56d in the add-on hood 12d.
  • the clamping nut 64d is screwed onto a thread of the threaded bolt 52d, so that the The rubber lip 62d of the annular holding element 52d is pressed to the outer area of the protective hood 14d for fixing.
  • FIG. 10 shows a further exemplary embodiment of an accessory 60e for a handheld power tool (not shown).
  • the accessory 60e has a handheld power tool device lOe.
  • the handheld power tool device lOe differs from the handheld power tool device 10d of the previous exemplary embodiment essentially with regard to the configuration of a fixing unit 24e of an add-on hood 12e.
  • the fixing unit 24e of the add-on hood 12e has a fixing element 28e.
  • the fixing element 28e is, in contrast to the fixing element 28d in the previous exemplary embodiment embodied as a clamping screw 32d, embodied as a clamping lever 30e.
  • the clamping lever 30e comprises a lever element 66e and an elastic tensioning element 68e.
  • the tensioning element 68e is materially connected to a form-fit element 18e of the add-on hood 12e, which is designed as an annular holding element 52e.
  • the elastic clamping element 68e is guided through a recess 56e in the attachment hood 12e and is connected to the lever element 66e on an outer side of the attachment hood by means of a cotter pin (not shown) guided through a hole in the tensioning element 68e.
  • a cotter pin (not shown) guided through a hole in the tensioning element 68e.
  • FIGS. 11 and 12 A further exemplary embodiment of an accessory 60f for a handheld power tool (not shown) is shown in FIGS. 11 and 12.
  • the accessory 60f comprises a handheld power tool device lOf.
  • the hand tool machine device lOf differs from the preceding exemplary embodiments with regard to a configuration of a form-fit element 18f and with regard to a fixing unit 24f of an attachment hood 12f.
  • the form-locking element 18f is formed as a projection of the attachment hood 12f.
  • the add-on hood 12f has a further form-locking element 78f.
  • the further form-locking element 78f is designed as a further projection.
  • the fixing unit 24f of the add-on hood 12f has a fixing element 28f.
  • the fixing element 28f is designed as a stop element 34f.
  • the attachment hood is connected and fixed to a protective hood 14f.
  • the form-fit element 18f and the further form-fit element each engage positively in an outer area 22f of the protective hood 14f.
  • the fixing element 28f embodied as a stop element 34f engages around the outer region 22f of the protective hood 14f.
  • the accessory 60g comprises a handheld power tool device 10g.
  • the Auslandzeugma machine device 10g differs from the previous exemplary embodiments with regard to the design of an add-on hood 12g.
  • the attachment hood 12g of the handheld power tool device 10g comprises a first attachment hood element 42g and a second attachment hood element 44g.
  • the second attachment hood element 44g of the attachment hood 12g can be positively connected to the first attachment hood element 44g.
  • the add-on hood 12g has a fixing unit 24g.
  • the fixing unit 24g is provided for fixing an angular position 26g of the add-on hood 12g relative to a protective hood 14g.
  • the fixing unit 24g is arranged between the first attachment hood element 42g and the second attachment hood element 44g.
  • the second add-on hood element 44g has an actuation window 80g.
  • the actuation window 80g is provided for actuation of the fixing unit 24g.
  • the fixing unit 24g has a fixing element 28g.
  • the fixing element 28g is designed as a wedge element 36g.
  • the wedge element 36g presses against a pressing surface 48g of an annular holding element 38g.
  • the ring-shaped holding element 38g has a rubber lip 62g.
  • the rubber lip 62g interacts with a collar-shaped and free-standing outer region 22g of the protective hood 14g that extends in a circumferential direction 20g.
  • a user For the fixation, a user reaches through the actuating window 80g and pushes the wedge element in the circumferential direction 20g against the pressing surface 48g of the annular Holding element 38g, so that the rubber lip 62g encloses the outer area of the protective hood 14g in a rotating manner.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)

Abstract

L'invention concerne un dispositif pour machine-outil portative (10a-g) destiné à une machine-outil portative (50a), en particulier une meuleuse d'angle, ce dispositif comprenant au moins un capot rapporté (12a-g) destiné à être relié à un capot de protection (14a-g) conçu pour recouvrir au moins en partie un outil de travail (16a) de la machine-outil portative (50a). Selon l'invention, le capot rapporté (12a-g) présente au moins un élément à complémentarité de forme (18a-g) qui est destiné à coopérer avec une zone extérieure (22a-g) autoportante du capot de protection (14a-g), laquelle présente une forme de collerette et s'étend dans une direction circonférentielle (20a-g), et à au moins contribuer à la liaison.
PCT/EP2020/083937 2019-12-30 2020-11-30 Dispositif pour machine-outil portative, machine-outil portative comprenant ce dispositif et accessoire comprenant ce dispositif Ceased WO2021136624A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US17/788,197 US20230025492A1 (en) 2019-12-30 2020-11-30 Hand-Held Power Tool Device, Hand-Held Power Tool having the Hand-Held Power Tool Device, and Accessories having the Hand-Held Power Tool Device
EP20816971.4A EP4084928A1 (fr) 2019-12-30 2020-11-30 Dispositif pour machine-outil portative, machine-outil portative comprenant ce dispositif et accessoire comprenant ce dispositif
CN202080090552.XA CN114901425A (zh) 2019-12-30 2020-11-30 手持式工具机装置、具有手持式工具机装置的手持式工具机和具有手持式工具机装置的配件

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019220621.2A DE102019220621A1 (de) 2019-12-30 2019-12-30 Handwerkzeugmaschinenvorrichtung, Handwerkzeugmaschine mit der Handwerkzeugmaschinenvorrichtung und Zubehör mit der Handwerkzeugmaschinenvorrichtung
DE102019220621.2 2019-12-30

Publications (1)

Publication Number Publication Date
WO2021136624A1 true WO2021136624A1 (fr) 2021-07-08

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Country Status (5)

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US (1) US20230025492A1 (fr)
EP (1) EP4084928A1 (fr)
CN (1) CN114901425A (fr)
DE (1) DE102019220621A1 (fr)
WO (1) WO2021136624A1 (fr)

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WO2022228175A1 (fr) * 2021-04-30 2022-11-03 博世电动工具（中国）有限公司 Meuleuse d'angle et son ensemble couvercle de protection

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DE102022205095A1 (de) 2022-05-23 2023-11-23 Robert Bosch Gesellschaft mit beschränkter Haftung Werkzeugmaschinenvorrichtung, Werkzeugmaschine und System
IT202300010155A1 (it) * 2023-05-19 2024-11-19 Daniele Trasforini Elemento di protezione per una spazzola o mola industriale o per hobbistica ed utensile elettrico o pneumatico

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EP4084928A1 (fr) 2022-11-09
DE102019220621A1 (de) 2021-07-01
US20230025492A1 (en) 2023-01-26
CN114901425A (zh) 2022-08-12

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