EP2106322A1 - Dispositif anti-rotation pour un capot de protection - Google Patents

Dispositif anti-rotation pour un capot de protection

Info

Publication number
EP2106322A1
EP2106322A1 EP07822423A EP07822423A EP2106322A1 EP 2106322 A1 EP2106322 A1 EP 2106322A1 EP 07822423 A EP07822423 A EP 07822423A EP 07822423 A EP07822423 A EP 07822423A EP 2106322 A1 EP2106322 A1 EP 2106322A1
Authority
EP
European Patent Office
Prior art keywords
unit
protective hood
tool
guard
rotation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP07822423A
Other languages
German (de)
English (en)
Other versions
EP2106322B1 (fr
Inventor
Cornelius Boeck
Joachim Schadow
Sinisa Andrasic
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 EP2106322A1 publication Critical patent/EP2106322A1/fr
Application granted granted Critical
Publication of EP2106322B1 publication Critical patent/EP2106322B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • 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
    • Y10T70/00—Locks
    • Y10T70/50—Special application
    • Y10T70/5009—For portable articles
    • Y10T70/5022—Tools
    • 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
    • Y10T70/00—Locks
    • Y10T70/50—Special application
    • Y10T70/5611—For control and machine elements

Definitions

  • the invention is based on a guard anti-rotation device according to the preamble of claim 1.
  • an angle grinder with adjustable protective hood is already known.
  • the guard is rotatably mounted on a nozzle of a flange of the angle grinder and releasably secured with only a single positive locking means.
  • the flange will pass centrally from the spindle of the angle grinder.
  • the spindle carries a separating or grinding disk, which can be tensely tensioned, for cutting and machining
  • the protective hood on the handheld power tool is to be positioned so that it can be adjusted in a rotational manner such that the area of the grinding wheel facing the user is encompassed by the protective hood.
  • an area of the grinding wheel leading the way from the user to the work piece engagement projects radially beyond the flange.
  • the invention relates to a guard anti-rotation device for a hand tool, in particular for an angle grinder, which is provided for a rotation between the hand tool and a protective hood unit. It is proposed that the guard anti-rotation device has a force-locking unit which is provided for preventing rotation between the hand-held power tool and the guard unit in the event of a bursting tool.
  • the protective hood unit is preferably provided in front of a tool, in particular in front of a disk-shaped, rotatably drivable tool, and / or in front of the operator tossed machining residues and secured to the handheld power tool in a working position.
  • a "force-locking unit” should be understood to mean, in particular, a unit which is provided for a circumferentially acting frictional connection between the protective hood unit and the hand-held power tool and which is designed to exert forces in an anti-rotation position between the protective hood unit and the hand-held power tool
  • the protective hood unit attached to the hand tool machine can be moved into the anti-rotation position by receiving pulses or forces from outwardly thrown tool parts of the ruptured tool should be understood as "intended” in particular specially equipped and / or specially designed.
  • guard anti-rotation device Due to the inventive design of the guard anti-rotation device, an effective protection of an operator of the power tool before the rotating tool during operation of the power tool and / or in particular in case of damage of the tool, such as in the case of bursting tool, before in the direction of the operator flying parts of the tool achieved become.
  • the force-locking unit is provided by changing at least one shape parameter of a component of the hand-held power tool and / or the
  • Guard unit to effect a positive connection between the power tool and the guard unit.
  • an increased frictional force between the protective hood unit and the portable power tool, in particular along contact surfaces for fastening the protective hood unit to the hand tool can be achieved in the case of the bursting tool and thus an additional force can be generated for fixing the protective hood unit.
  • the force-locking unit has at least one frictional connection element which is provided for changing the shape parameter of the handheld power tool and / or the protective hood unit.
  • the shape parameter preferably comprises a cross-sectional area of a receiving unit of the handheld power tool and / or a diameter of a tension band of the protective hood unit and / or other shape parameters that appear appropriate to the person skilled in the art.
  • a "cross-sectional area of a receiving unit” is to be understood in particular as meaning a surface to be spanned by the tensioning band in a circumferential direction for achieving a frictional connection between the handheld power tool and the protective hood unit.
  • the frictional element is movably mounted on the hand tool and / or on the guard unit, whereby structurally simple change of the shape parameter, in particular in the case of a bursting tool, can be achieved.
  • the adhesion element can be moved together with the protective hood unit into a position for preventing rotation in the case of a bursting tool
  • a change in the shape parameter can advantageously be achieved by a change in position, in particular in the anti-rotation position of the adhesion element.
  • an energy of a broken tool part transferred to the protective hood can advantageously be used to change the position of the force-locking element.
  • a "Vermoserssposition" should be understood in particular a position of the guard unit with respect to the power tool, in which the guard unit against rotation, in particular in a rotational direction of the tool on the hand tool, in particular on a receiving flange, is arranged.
  • the force-locking unit has a guide element in which the force-locking element is movably mounted, whereby a particularly targeted movement into an anti-rotation position is achieved and, in addition, a low-wear movement of the force-locking element can be achieved.
  • the non-positive element can be brought or moved together with the protective hood unit in a Verwarêtsposition when the adhesion element is intended to at least partially positively and / or non-positively coupled to the protective hood unit.
  • the term "couplable” should be understood to mean, in particular, an entrainment of the frictional connection element based on an at least partial positive locking and / or frictional connection during a rotation of the protective hood unit secured to the handheld power tool from a working position into the anti-rotation position, the rotation of the protective hood unit being dependent on the Working position in the anti-rotation position due to a Power transmission or an impulse transmission from a ruptured tool part to the protective hood unit.
  • the traction element is formed by a rolling element and / or an eccentric element and / or a wedge element and / or a force-locking element which is ramp-shaped in a circumferential direction and / or further non-positive elements which appear appropriate to the person skilled in the art.
  • rotational drive with the protective hood unit and / or structurally simple modification of a mold parameter can advantageously be achieved.
  • a "circumferential direction" should be understood to mean, in particular, a direction which, in an operation of the handheld power tool or in an assembled state of the guard unit, is aligned substantially parallel to a direction of rotation of the tool on the handheld power tool.
  • the wedge element additionally has a thread for arrangement on a receiving unit of the hand-held power tool, a change in shape of the receiving unit, in particular a receiving flange of the receiving unit, against which the protective hood unit bears in a state fastened to the handheld power tool, can be achieved simply by widening the receptacle. unit to achieve an anti-rotation position in the case of a bursting tool due to a frictional connection can be achieved.
  • a hand-held power tool system with a hand tool in particular an angle grinder, a guard unit and a guard anti-rotation device
  • the protective anti-rotation device has a force-locking unit, which to a rotation between the hand tool and the guard unit in the event of bursting
  • the guard unit attached to the power tool can be moved by receiving pulses or forces of outwardly thrown tool parts of the ruptured tool in the anti-rotation.
  • the force-locking unit has at least one frictional connection element which is provided for a change of a shape parameter of the hand-held power tool and / or the protective hood unit.
  • the shape parameter preferably comprises a cross-sectional area of a receiving unit of the handheld power tool and / or a diameter of a clamping band of the protective hood unit and / or further shape parameters that appear appropriate to the person skilled in the art.
  • the handheld power tool has a receiving unit in which at least partially the frictional connection element is mounted, a particularly compact arrangement of the frictional connection unit can be achieved at least partially and / or it can be due to a frictional connection between the protective hood unit and the handheld power tool in a deformation of the force-closing element Fall of a bursting tool the traction element are particularly easy to replace.
  • the receiving unit is designed slotted at least partially along a circumferential direction, whereby a reversible change in shape of the receiving unit, in particular a change in a cross-sectional area of the receiving unit can be achieved particularly advantageous.
  • Slit-like openings of the receiving unit are preferably arranged perpendicular to the circumferential direction on the receiving unit.
  • the receiving unit has an intermediate ring on which the
  • Frictionally engaging element is at least partially disposed, whereby the frictional connection element in a deformation after a frictional connection between the protective hood unit and the power tool in the case of a bursting tool can be easily replaced constructively.
  • a structurally simple arrangement of the frictional connection element for changing a shape parameter, in particular for reducing a diameter of a tension band of the protective hood unit in the case of a bursting tool can be achieved if the protective hood unit has at least one closure unit on which at least partially the frictional connection element is arranged.
  • the closure unit is formed by a clamping closure unit and for attachment of the protective hood unit provided on the power tool, wherein a fastening is advantageously carried out by means of a frictional engagement between the clamping band and the power tool.
  • the frictional connection element is arranged in the region of a closure element, such as in the region of a clamping screw, a clamping lever and / or further, the expert appear useful as closure elements.
  • the invention comprises a hand tool for a rotating, preferably disc-shaped tool, with a machine housing having a flange or a machine neck, on which a protective hood, in particular made of sheet metal, for
  • the guard has a guard body, which consists of a circular disc-shaped piece, in particular with angled outer edge, and has a central circular recess, at the edge of a guard hood or collar is formed, which carries a ring-shaped clamping band , which is contractible by means of a clamping means and wherein a force acting between the machine neck and protective rotation between guard and machine neck is arranged in the form of a profiling, the guard on the clamping band and / or on the clamping means in its clamping position multiple positive and / or non-positively with the Machine neck can be coupled and thus rotatably fixed and to achieve a release position except positive engagement and / or adhesion to the machine neck can be brought, wherein the guard is then rotationally adjustable.
  • 1 is an exploded view of a hand tool system according to the invention
  • 2 a protective hood anti-rotation locking device with a traction element designed as an eccentric element in a schematic partial section
  • FIG. 3 shows a protective hood anti-rotation device with a force-locking element movably mounted within a guide element, in a schematic partial section
  • FIG. 4 shows a protective hood anti-rotation device with a traction element designed as an eccentric element in the region of a closure unit of a protective hood unit in a schematic partial section
  • FIG. 5 shows a protective anti-rotation device with a traction element designed as a wedge element in a schematic partial section
  • FIG. 6a, 6b show a guard anti-rotation device with a wedge element configured alternatively to FIG. 5 in a schematic view from above (FIG. 6a) and a sectional view (FIG. 6b) and FIG
  • FIG. 7a, 7b show a protective hood anti-rotation device with a force-locking element designed as an intermediate ring, which is coupled non-positively (FIG. 7a) or positively (FIG. 7b) to a protective hood unit in a schematic partial section.
  • FIG. 1 shows a hand-held power tool system 40a with a handheld power tool 12a, a protective hood unit 14a and a guard anti-rotation locking device 10a, which is formed by an angle grinder and is shown only partially here.
  • the handheld power tool 12a has a handheld power tool housing 46a and, for receiving the guard unit 14a or a tool 18a formed by a cutting disk, a receiving unit 24a which is screwed to the handheld power tool housing 46a.
  • a drive shaft 50a protrudes from the receiving unit 24a on a side 48a facing away from the handheld power tool housing 46a, which drive shaft can be connected at its free end 52a to the disk-shaped tool 18a and can be driven to rotate about an axis 54a.
  • the protective hood unit 14a comprises a protective hood 56a and a closure unit 44a.
  • the protective hood 56a covers an angular range of the tool in a mounted state of the power tool system 40a 18a of approximately 180 ° and has for this purpose a half-disc-shaped protective hood body 58a and a guard edge 60a, which is initially aligned perpendicular to the half-disc-shaped guard body 58a and then parallel to the half-disc-shaped guard body 58a in a radial direction 62a inwardly.
  • the protective hood 56a also has a protective collar collar 64a, which is aligned substantially perpendicular to the half-disk-shaped protective hood body 58a.
  • the protective hood collar 64a is outwardly surrounded in the radial direction 62a by a tension band 28a of the closure unit 44a, wherein the protective collar collar 64a and the tension band 28a are connected to one another by means of a welded connection. Together with the tensioning band 28a, the protective hood collar 64a is provided for fastening the protective hood unit 14a to the handheld power tool 12a or to the receiving unit 24a, which has a cylindrical receiving flange 66a for this purpose.
  • this region has two end regions 70a, 72a which extend outward in the radial direction 62a.
  • the two end regions 70a, 72a each have a recess 74a through which a closure element 76a of the closure unit 44a formed by a clamping screw engages (see FIG.
  • the clamping screw can be fastened by means of a nut in the recesses 74a of the clamping band.
  • the protective hood 56a is fastened by means of the closure unit 44a to the receiving unit 24a or to the receiving flange 66a due to frictional engagement between the protective collar 64a and the clamping band 28a and the receiving flange 66a in a working position, so that the protective hood unit 14a is in regular operation the hand tool 12a is arranged rotationally fixed.
  • further closure elements such as, for example, a tensioning lever and / or positive locking elements, etc., instead of the tensioning screw.
  • the hand-held power tool system 40a has a coding device 78a, which is provided to prevent a mounting of tools 18a or of tools 18a together with the protective hood unit 14a on unsuitable hand-held power tools 12a.
  • the tension band 28a has a coding element 80a of the coding device 78a, which is formed integrally with the tension band 28a.
  • the coding element 80a is formed by an inwardly extending shape in the radial direction 62a and has a rectangular shape.
  • the receiving flange 66a has a coding element 82a of the coding device 78a, which is formed by a recess into which the coding
  • the protective hood unit 14a is mounted with the handheld power tool 12a, it is possible to insert the retaining element 80a of the clamping band 28a.
  • the protective hood unit 14a can be rotated into a working position.
  • the Aufhahmeflansch 66a in the circumferential direction 38a, 68a circumferential groove 84a in which upon rotation of the protective hood unit 14a in the working position, the coding element 80a is guided.
  • the guard anti-rotation device 10a of Figure 1 is shown in more detail.
  • the guard anti-rotation device 10a is provided for an anti-rotation between the guard unit 14a and the hand tool 12a and the receiving unit 24a during a damage of the tool 18a, such as a bursting tool 18a.
  • the guard anti-rotation device 10a on a power-locking unit 16a which is provided for a positive rotation between the power tool 12a and the protective hood unit 14a in the case of a bursting tool 18a, wherein a frictional connection between the power tool 12a and the protective hood unit 14a by changing a shape parameter of one of Aufhahmeflansch 66 a formed component of the power tool 12 a is effected.
  • the shape parameter is formed by a cross-sectional area 22a of the receiving unit 24a or of the receiving flange 66a to be encompassed by the clamping band 28a in the circumferential direction 38a, 68a, the cross-sectional area 22a extending substantially perpendicular to the axis 54a of the drive shaft 50a.
  • the receiving unit 24a has a frictional connection element 20a of the gripping unit 16a, which is provided for changing the cross-sectional area 22a of the receiving flange 66a.
  • the frictional engagement element 20a is formed by a cylindrical rolling element 32a and arranged in a radially outward direction 62a
  • the frictional connection element 20a in this case positively couples to the tensioning strap 28a and / or the protective hood collar 64a of the protective hood unit 14a, with a side 88a of the rolling element 32a pointing outward in the radial direction 62a in an assembled working position of the protective hood unit 14a on the handheld power tool 12a at a radial direction 62a inwardly facing surface
  • the frictional connection element 20a is formed by an eccentric element 34a and rotatably mounted in the Aufhahmeflansch 66a about an axis of rotation 92a, which is aligned substantially parallel to the axis 54a of the drive shaft 50a.
  • Tool parts in a rotational direction 98 a of the tool 18 a thrown outward. If one of these tool parts hits the protective hood unit 14a, a kinetic energy of the tool part transmitted to the protective hood unit 14a exceeds a fastening energy of the frictional connection of the locking unit 44a between the protective hood unit 14a and the handheld power tool 12a. The protective hood unit 14a is then rotated out of its working position in the direction of rotation 98a of the tool 18a.
  • the eccentric element 34a which frictionally couples on the radially inward-facing surface 90a of the tensioning band 28a and / or the guard collar 64a, is rotated about the rotation axis 92a in a direction 100a which is directed in the direction of rotation 98a of the tool 18a. wherein the eccentric element 34a due to a movement of the protective hood unit 14a on the clamping band
  • the eccentric member 34a is moved together with the guard unit 14a.
  • the surface 90 a of the tensioning band 28 a and / or the protective collar collar 64 a facing inward in the radial direction 62 a or an outer surface of the eccentric element 34 a to increase the force between the eccentric element 34 a and the tensioning band 28 a and / or the guard collar 64a due to a special choice of material and / or a special surface treatment have an increased coefficient of friction.
  • a partial region 102a of the eccentric element 34a Due to the rotation of the eccentric element 34a, a partial region 102a of the eccentric element 34a, which has a greater distance 96a from the axis of rotation 92a than the partial region 94a with the shortest distance 96a, is turned outwards, so that the cross-sectional area 22a of the receiving flange 66a increases, thereby Frictional force between the receiving flange 66a and the clamping band 28a is increased together with the protective hood collar 64a.
  • a kinetic energy transmitted from the tool part to the protective hood unit 14a is partially absorbed by the frictional force acting and held in a rotationally secure anti-rotation position as soon as the frictional force equals a residual impulse of the protective hood unit 14a along the rotational direction 98a.
  • FIG. 3 shows an alternative embodiment of a guard anti-rotation locking device 1 of a hand-held power tool system in a schematic partial section.
  • the protective hood twist-lock device 1 Ob has a force-locking unit 16b with a force-locking element 20b, which is formed by a cylindrical rolling element 32b and is provided for preventing rotation between a hand-held power tool, not shown, and a protective hood unit in the case of a bursting tool.
  • the force-locking unit 16b has a guide element 30b in which the rolling element 32b is movably mounted.
  • the guide member 30b is disposed in a receiving flange 66b in a radially outward direction 62b
  • Edge region 86b of the receiving flange 66b arranged and formed tapered in a rotational direction 98b of a tool.
  • the rolling body 32b is secured by means of a tear-off not shown in a widened end portion 104b of the guide member 30b against moving in the direction of rotation 98b during a change in position of the guard unit and / or in a disassembled guard unit.
  • Rolling body 32b and a tightening strap 28b and / or a protective hood collar a securing force of the breakaway as is the case in the rotating in the direction of rotation 98b guard unit due to transmission of kinetic energy of an outwardly thrown tool part of a bursting tool, the rolling body 32b in a twist - Moves securing position together with the protective hood unit.
  • An anti-rotation by means of the force-locking element 20b is analogous to the description of Figure 2.
  • FIG. 4 shows an alternative embodiment of a guard anti-rotation lock device 10c of a hand-held power tool system in a schematic partial section.
  • the protective cover twist The safety device 10c has a force-locking unit 16c with a force-locking element 20c, which is formed by an eccentric element 34c and is provided for preventing rotation between a hand-held power tool and a protective hood unit in the event of a bursting tool.
  • the frictional connection element 20c is provided for changing a shape parameter of a protective band unit formed by a tension band 28c, which is formed by a diameter 26c.
  • the frictional connection element 20c is additionally arranged on a closure unit 44c of the protective hood unit and, for this purpose, is formed integrally with a tension closure element 106c.
  • the eccentric element 34c has a hook element 108c which, in a working position of the protective hood unit, engages in one of a plurality of recesses 110c arranged in a receiving flange 66c of the handheld power tool for receiving the hook element 108c.
  • FIG. 5 shows a schematic partial section of an alternative guard anti-rotation device 1 Od of a hand-held power tool system.
  • the guard anti-rotation device 10d has a force-locking unit 16d with a force-locking element 2Od, which is formed by a wedge element 36d and is provided for a rotation lock between a hand tool and a protective hood unit in the case of a bursting tool.
  • the wedge member 36d is tapered along a direction 116d that extends substantially perpendicular to a cross-sectional area 22d of a receiving flange 66d, at a portion 118d facing the receiving flange 66d.
  • the wedge element 36d has a thread, not shown in more detail, on a radially outer surface 12d, with which the wedge element 36d can be screwed to a mating thread, not shown in detail, of a radially inward surface 62d of the receiving flange 66d is.
  • the receiving flange 66d has a conically tapered recess 126d in an inner region 124d in the radial direction 62d.
  • the wedge element 36d is cyclically formed linderf ⁇ rmig, wherein a diameter of the wedge member 36d is substantially equal to an outer diameter of the Aufhahmeflansches 66d.
  • a tension band 28d is in a mounted working position of the protective hood unit against a surface 130d directed outwards in the radial direction 62d.
  • a frictional force between the surface 130d of the wedge member 36d and the tightening band 28d is larger than a frictional force between the receiving flange 66d and the tightening band 28d.
  • the wedge element 36d is rotated due to a non-positive coupling with the clamping band 28d and screwed into the receiving flange 66d.
  • a conically tapered configuration of the wedge element 36d causes a widening of a cross-sectional area 22d of the
  • the guard anti-rotation device 1 Oe has a force-locking unit 16e with a force-locking element 2Oe, which positively couples to a guard unit.
  • the non-positive element 2Oe formed by a wedge element 36e has, in a radially outer direction 62e outer edge region 132e, circumferential recesses 134e in the circumferential direction 38e, 68e into which a positive locking element 136e of FIG
  • the positive locking element 136e is arranged on a closure unit 44e of the protective hood unit and is formed by a tab-like hook element.
  • the positive locking element 136e is frictionally brought by means of a clamping screw in a form-fitting position in a fastening of the protective hood unit or at a closing of the closure unit 44e.
  • a rotation of the guard unit is due to the frictional connection analogous to the description of Figure 5.
  • the protective hood anti-rotation lock device 10f has a force-locking unit 16f with a force-locking element 2Of, which is formed by an intermediate ring 42f and is provided for preventing rotation between a hand-held power tool and a protective hood unit in the case of a bursting tool.
  • the intermediate ring 42f is arranged captively on a receiving flange 66f of a receiving unit 24f. At an inward direction in the radial direction 62f and the receiving flange 66f facing surface 138f of the intermediate ring 42f in a circumferential direction 38f, 68f formed like a ramp.
  • the intermediate ring 42f in the circumferential direction 38f, 68f successively arranged ramp elements 14Of, which engage in the same shape, but oppositely arranged ramp elements 142f on a radially outward 62f outwardly directed surface 144f of the receiving flange 66f.
  • the intermediate ring 42f is rotated due to a frictional force between the clamping band 28f and the intermediate ring 42f and the ramp members 14Of, 142f of the intermediate ring 42f and the receiving flange 66f move relative to each other.
  • a widening of a diameter of the intermediate ring 42f or an enlargement of a cross sectional area 22f of the receiving unit 66f together with the intermediate ring 42f so that between the protective hood unit and the receiving unit 24f an effective anti-rotation due to a frictional connection analogous to the description
  • the intermediate ring 42f positively coupled to the clamping band 28f to a rotational drive in the case of rotation of the protective hood unit au ground a bursting tool.
  • a closure element 148f formed by a tensioning lever has a cam 15Of which, in the closed state of a closure unit 44f formed by a toggle lever system, extends inward in the radial direction 62f on the tensioning lever.
  • the tensioning band 28f and the intermediate ring 42f each have a recess 152f, 154f, through which or in which the cam 15Of engages in the closed state of the toggle lever system.
  • An anti-rotation device by means of the intermediate ring 42f and a further embodiment of the intermediate ring 42f can be taken from the description of FIG. 7a.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Portable Power Tools In General (AREA)
  • Sawing (AREA)
  • Harvester Elements (AREA)
  • Auxiliary Devices For Machine Tools (AREA)

Abstract

Dispositif anti-rotation pour un capot de protection pour une machine-outil portative (12a-f), en particulier pour une rectifieuse d'angles, qui est destiné à empêcher la rotation entre la machine-outil portative (12a-f) et une unité capot de protection (14a-f). Selon la présente invention, ledit dispositif comporte une unité de liaison à force (16a-f) conçue pour empêcher une rotation entre la machine-outil portative (12a-f) et l'unité capot de protection (14a-f) en cas d'éclatement de l'outil (18a-f).
EP20070822423 2006-11-13 2007-11-09 Dispositif anti-rotation pour un capot de protection Active EP2106322B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610053305 DE102006053305A1 (de) 2006-11-13 2006-11-13 Handwerkzeugmaschine mit Schutzhaube, insbesondere Winkelschleifer
PCT/EP2007/062134 WO2008058909A1 (fr) 2006-11-13 2007-11-09 Dispositif anti-rotation pour un capot de protection

Publications (2)

Publication Number Publication Date
EP2106322A1 true EP2106322A1 (fr) 2009-10-07
EP2106322B1 EP2106322B1 (fr) 2014-08-06

Family

ID=39004838

Family Applications (5)

Application Number Title Priority Date Filing Date
EP07822409.4A Active EP2106326B1 (fr) 2006-11-13 2007-11-09 Dispositif anti-rotation pour un capot de protection
EP07822405.2A Active EP2104590B1 (fr) 2006-11-13 2007-11-09 Dispositif anti-rotation pour un capot de protection
EP07822425.0A Active EP2106323B1 (fr) 2006-11-13 2007-11-09 Système de machine-outil portative
EP20070822423 Active EP2106322B1 (fr) 2006-11-13 2007-11-09 Dispositif anti-rotation pour un capot de protection
EP20070822417 Not-in-force EP2106321B1 (fr) 2006-11-13 2007-11-09 Dispositif anti-rotation pour un capot de protection

Family Applications Before (3)

Application Number Title Priority Date Filing Date
EP07822409.4A Active EP2106326B1 (fr) 2006-11-13 2007-11-09 Dispositif anti-rotation pour un capot de protection
EP07822405.2A Active EP2104590B1 (fr) 2006-11-13 2007-11-09 Dispositif anti-rotation pour un capot de protection
EP07822425.0A Active EP2106323B1 (fr) 2006-11-13 2007-11-09 Système de machine-outil portative

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EP20070822417 Not-in-force EP2106321B1 (fr) 2006-11-13 2007-11-09 Dispositif anti-rotation pour un capot de protection

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US (7) US8562395B2 (fr)
EP (5) EP2106326B1 (fr)
CN (5) CN101534996B (fr)
DE (1) DE102006053305A1 (fr)
RU (5) RU2466848C2 (fr)
WO (5) WO2008058900A1 (fr)

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RU2465117C2 (ru) 2012-10-27
US8460070B2 (en) 2013-06-11
US20090019899A1 (en) 2009-01-22
CN101534998B (zh) 2013-12-18
DE102006053305A1 (de) 2008-05-15
RU2009122212A (ru) 2010-12-20
US20120034855A1 (en) 2012-02-09
CN101534995A (zh) 2009-09-16
EP2106326A1 (fr) 2009-10-07
US20090036044A1 (en) 2009-02-05
CN101535002B (zh) 2014-10-08
EP2106321A1 (fr) 2009-10-07
EP2104590B1 (fr) 2016-01-27
CN101534996B (zh) 2013-05-08
US20090098812A1 (en) 2009-04-16
RU2465118C2 (ru) 2012-10-27
RU2464150C2 (ru) 2012-10-20
EP2106323B1 (fr) 2017-07-26
EP2106326B1 (fr) 2017-01-11
RU2009122232A (ru) 2010-12-20
US20090130961A1 (en) 2009-05-21
RU2463151C2 (ru) 2012-10-10
US7955162B2 (en) 2011-06-07
EP2106321B1 (fr) 2013-07-10
RU2466848C2 (ru) 2012-11-20
CN101534997A (zh) 2009-09-16
CN101534996A (zh) 2009-09-16
US20120231710A1 (en) 2012-09-13
US8454411B2 (en) 2013-06-04
CN101534998A (zh) 2009-09-16
US20090100885A1 (en) 2009-04-23
EP2106323A1 (fr) 2009-10-07
EP2106322B1 (fr) 2014-08-06
CN101534997B (zh) 2013-06-19
WO2008058909A1 (fr) 2008-05-22
WO2008058904A1 (fr) 2008-05-22
RU2009122230A (ru) 2011-02-20
WO2008058910A1 (fr) 2008-05-22
US8465348B2 (en) 2013-06-18
WO2008058900A1 (fr) 2008-05-22
EP2104590A1 (fr) 2009-09-30
RU2009122216A (ru) 2010-12-20
US8562395B2 (en) 2013-10-22
RU2009122235A (ru) 2010-12-20
WO2008058901A1 (fr) 2008-05-22
CN101535002A (zh) 2009-09-16
US8221197B2 (en) 2012-07-17
US8231436B2 (en) 2012-07-31

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