EP2928640B1 - Ponceuse à main - Google Patents

Ponceuse à main Download PDF

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Publication number
EP2928640B1
EP2928640B1 EP13799083.4A EP13799083A EP2928640B1 EP 2928640 B1 EP2928640 B1 EP 2928640B1 EP 13799083 A EP13799083 A EP 13799083A EP 2928640 B1 EP2928640 B1 EP 2928640B1
Authority
EP
European Patent Office
Prior art keywords
hood
tubular rod
tool
grinding machine
tool holder
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.)
Active
Application number
EP13799083.4A
Other languages
German (de)
English (en)
Other versions
EP2928640A1 (fr
Inventor
Dirk Röck
Udo Panzer
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.)
Flex Elektrowerkzeuge GmbH
Original Assignee
Flex Elektrowerkzeuge 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 Flex Elektrowerkzeuge GmbH filed Critical Flex Elektrowerkzeuge GmbH
Priority to EP16190759.7A priority Critical patent/EP3132891B1/fr
Publication of EP2928640A1 publication Critical patent/EP2928640A1/fr
Application granted granted Critical
Publication of EP2928640B1 publication Critical patent/EP2928640B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
    • B24B55/102—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided 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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/18—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like
    • B24B7/182—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like for walls and ceilings
    • B24B7/184—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like for walls and ceilings pole sanders

Definitions

  • the present invention relates to a hand-held grinding machine comprising a holding device for holding the grinding machine, a drive motor and a tool head.
  • the holding device comprises a substantially tubular rod having a proximal end and a distal end, wherein the drive motor is disposed at the proximal end and wherein the tool head is disposed at the distal end.
  • the hand-held grinding machine further comprises a transmission shaft which connects the drive motor for torque transmission with a tool holder of the tool head and extends at least partially within the tubular rod.
  • a hand-held grinder is for example from the DE 10 2005 021 153 A1 known.
  • the present invention has for its object to provide a hand-held grinding machine, which allows a simple, efficient and possible fatigue-free grinding.
  • the grinding machine comprises a suction device which comprises a suction channel, which has a substantially annular or ring-shaped suction channel section.
  • a ring-section-shaped suction channel section is to be understood as meaning in particular a suction channel section which has a shape which, at least approximately corresponds to a ring section, ring segment or ring sector.
  • substantially annular or ring-shaped suction channel section surrounds a coupling device for coupling the transmission shaft to the tool holder at least in sections.
  • the annular or annular section-shaped suction channel section is preferably a suction channel section arranged with respect to a suction direction downstream of the tool holder, in particular directly after the tool holder.
  • an axis of symmetry of the substantially annular or ring-shaped suction channel section corresponds at least approximately to an axis of rotation of an end of the transmission shaft facing the tool holder.
  • An axis of symmetry of a substantially annular portion-shaped suction channel portion is preferably an axis of symmetry of a complete ring obtainable by completing the annular portion-shaped suction channel portion.
  • a uniform suction in the region of the tool holder in particular a uniform suction of abrasion during grinding, can be made possible.
  • the tool holder and an end of the transmission shaft facing the tool holder have at least approximately a common axis of rotation.
  • the tool holder and a tool receiving end facing the transmission shaft are preferably connected to each other by means of one or more gear, in particular by means of one or more reduction gear.
  • the substantially annular or annular section-shaped suction channel section preferably surrounds the coupling device, in particular a gear, for coupling the transmission shaft to the tool holder at least in sections and at least approximately concentrically.
  • the tool holder and a tool receiving end facing the transmission shaft are connected to each other by means of a planetary gear.
  • the coupling device for coupling the transmission shaft with the tool holder comprises a planetary gear or is formed by a planetary gear.
  • a planetary gear is in particular an epicyclic gear to understand, which in addition to frame-mounted waves also has waves that rotate on circular paths in a frame.
  • the wheels rotating on the revolving waves orbit a central wheel similar to planets the sun.
  • a drive shaft of the coupling device is aligned with an output shaft of the coupling device.
  • the substantially annular or ring-shaped suction channel section of the suction channel of the suction device, the tool holder, an end of the transmission shaft facing the tool holder and / or a hood device for covering the tool holder are arranged substantially coaxially with one another.
  • the substantially annular or ring-shaped suction channel section of the suction channel of the suction device, the tool holder, an end of the transmission shaft facing the tool holder and / or a hood device for covering the tool holder are preferably pivotable about one or more pivot axes relative to the holding device by means of a pivoting device.
  • the transmission shaft is preferably formed at least partially flexible.
  • the tool head is preferably pivotally connected to the holding device about one or more pivot axes.
  • the tool head is connected by means of a pivoting device about one or more pivot axes pivotally connected to the holding device.
  • an end of the transmission shaft facing the tool holder is pivotable about one or more pivot axes together with the tool head, in particular can be pivoted about one or more pivot axes by means of the pivot device.
  • an end of the transmission shaft facing the tool receptacle and the tool receptacle have a common axis of rotation in each pivot position.
  • the hand-held grinding machine comprises two or more gears, in particular reduction gear, for coupling the drive motor with the tool holder.
  • At least one transmission is arranged both at an end of the transmission shaft facing the drive motor and at an end of the transmission shaft facing the tool holder.
  • a suction channel of a suction device of the hand-held grinding machine and the transmission shaft extend at least partially together in a tubular element of the hand-held grinding machine, in particular in the tubular rod of the holding device.
  • the hand-held grinding machine comprises at least two tubular elements, wherein one of the tubular elements is the tubular rod, in which the transmission shaft extends at least in sections, and wherein a further tubular element forms a Absaugkanalab steel the suction duct of the suction device.
  • the tubular elements are preferably arranged substantially parallel to one another.
  • At least one pipe element is preferably rigid, rigid, inflexible and / or inflexible.
  • the tubular rod is rigid, rigid, inflexible and / or inflexible.
  • a tubular element may be formed in one piece. Furthermore, it can be provided that a tubular element is formed in two parts, in particular telescopic.
  • the substantially annular or annular portion-shaped suction channel section of the suction channel of the suction device is preferably fixed in space with the coupling device, in particular with a transmission, connected by means of which the tool holder and a tool receiving end facing the transmission shaft are coupled together.
  • the substantially annular or annular section-shaped suction channel section and the coupling device are arranged together in a common housing.
  • the housing may be formed, for example, by one or more injection-molded components.
  • substantially annular or ring-shaped suction channel section and the coupling device for coupling the transmission shaft to the tool holder are fixed in a common housing.
  • the substantially annular or annular section-shaped suction channel section can be formed, for example, by a separate device.
  • the substantially annular or annular portion-shaped suction channel section is formed at least in sections by the housing of the coupling device.
  • a housing for receiving the coupling device for coupling the transmission shaft with the tool holder forms the substantially annular or ring-shaped suction channel section.
  • the housing and the holding device are preferably connected to one another in a pivotable manner by means of at least one pivoting element.
  • the housing is connected by means of at least one pivoting element about one or more pivot axes pivotally connected to the holding device.
  • the substantially annular or ring-shaped suction channel section is arranged on the tool head.
  • the im Essentially annular or ring-shaped suction channel section part of the tool head.
  • the substantially annular or annular portion-shaped suction channel section of the suction channel and a suction channel section of the suction channel extending within a tubular bar of the holding device or within a separate tubular element are preferably connected to each other in a fluid-efficient manner by means of a flexible suction channel section of the suction channel.
  • the substantially annular or annular section-shaped suction channel section preferably adjoins a transition section, on which preferably the flexible suction channel section, in particular a substantially tubular flexible suction channel section, is arranged.
  • the flexible suction duct section is preferably formed by a flexible tubular element.
  • the transmission shaft preferably runs at least in sections within a flexible tube element which surrounds and / or forms the flexible suction channel section.
  • the tool holder can be coupled by means of the coupling device optionally with the transmission shaft or removable from the transmission shaft, in particular removable.
  • a rotation axis (rotation axis) of the tool holder and / or one of the tool holder facing the end of the transmission shaft is preferably substantially perpendicular to one or more pivot axes of the tool head.
  • rotation axis rotation axis
  • one or more pivot axes of the tool head in particular in each position of the tool head, intersect.
  • a tool received on the tool holder is preferably rotatable, oscillating and / or eccentrically drivable.
  • a releasable connection for attachment of the tool to the tool holder is preferably a releasable connection, in particular by means of a hook and loop fastener provided.
  • the tool for example a grinding element, is preferably detachably fixable to the tool holder.
  • the tool head comprises a hood device for covering the tool holder.
  • the hood device comprises a hood element.
  • the hood element comprises a hood space, in particular a substantially cylindrical hood space.
  • the tool holder and / or a tool arranged on the tool holder can be arranged at least in sections in the hood space.
  • the tool holder can be arranged at least in sections in the hood space together with a tool arranged thereon.
  • the hood element comprises a recess, in particular a cylinder-segment-shaped recess.
  • a tangent which bears against an edge of the tool holder arranged in the tool, extends substantially in a recess, in particular the cylinder-segment-shaped recess defining plane.
  • the recess bounding the plane is preferably substantially parallel to a rotational axis of the tool holder and the tool arranged thereon.
  • edge areas in particular edge regions of walls, floors or ceilings, can also be processed by means of the hand-held grinding machine which would not be accessible when hood elements completely surrounding the tool holder were used.
  • the tool holder, the transmission shaft and the hood element are rotatably arranged on a central element of the tool head.
  • the tool holder, an end of the transmission shaft facing the tool holder and the hood element are arranged so as to be rotatable about at least approximately mutually parallel axes of rotation, in particular about a common axis of rotation, on a central element of the tool head.
  • an axis of symmetry of the essentially cylindrical hood space (cylinder axis) is at least approximately identical to the axis of rotation of the tool holder.
  • a central element of the tool head is preferably pivotally connected to the holding device about one or more pivot axes.
  • a central element of the tool head is preferably a housing for a coupling device for coupling the transmission shaft with the tool holder.
  • the central element in particular the housing, preferably serves to receive a substantially tubular suction channel section of a suction channel of a suction device.
  • a substantially annular or annular section-shaped suction channel section of a suction channel of a suction device is formed by the central element, in particular by the housing.
  • the hood device preferably comprises a braking device, by means of which an undesired rotational movement of the hood element can be braked.
  • the braking device may comprise, for example, a spring device.
  • the hood device comprises a cover element, by means of which the recess, in particular the cylinder-segment-shaped recess, can be covered in the hood element.
  • a cover it is preferably possible to simplify extraction of abrasion occurring in the grinding operation of the grinding machine.
  • a cover preferably be avoided that in the grinding operation of the grinding machine resulting abrasion escapes through the recess from the hood space.
  • the cover is preferably in a covering position, in which the recess, in particular the cylinder-segment-shaped recess, is covered, and in an open position, in which the hood space is accessible through the recess, brought.
  • the hood device can be selectively brought into a mode of operation for grinding large areas (cover in the cover position) or in an operating mode for grinding close to the edge (cover in the open position).
  • the cover can, for example, be rotatable, pivotable, hinged and / or releasably arranged on the hood element. In this way, the cover can be particularly easily brought from the covering position in the open position and / or from the open position to the covering position.
  • the cover element is rotatable or pivotable about an (approximately) approximately perpendicular to the axis of rotation of the tool holder aligned (pivot) axis.
  • the cover element is rotatable or pivotable about an (approximately) parallel to the axis of rotation of the tool holder aligned (rotary) axis.
  • the cover element, the tool holder, an end of the transmission shaft facing the tool holder and / or the hood element are rotatable about a common axis of rotation.
  • the cover element, the tool holder, an end of the transmission shaft facing the tool holder and / or the hood element are preferably arranged on a central element of the tool head.
  • the hood element comprises a sealing device, in particular a brush device.
  • the sealing device preferably serves a gentle application of the hood element to a surface to be machined by means of the grinding machine.
  • the hood space can be sealed against an environment in order to be able to extract the abrasion occurring in the grinding operation of the grinding machine in a targeted manner.
  • the sealing device is preferably designed to be resilient or spring-mounted and / or arranged.
  • the hood element can preferably be applied gently and reliably sealingly against a surface to be machined.
  • the sealing device in particular the brush device, preferably extends along the circumference of the cylindrical hood space.
  • the sealing device extends along the circumference of the cylindrical hood space at least approximately from one side of the recess, in particular the cylinder-segment-shaped recess, to the opposite side of the recess, in particular the cylinder-segment-shaped recess.
  • the cover element comprises a sealing device, for example a brush device.
  • the sealing device in particular the brush device, of the cover element
  • the sealing device, in particular the brush device, of the hood element can preferably be supplemented to a sealing device, in particular a brush device, which completely surrounds the hood space substantially annularly.
  • the sealing device is arranged on the cover, that in a covering position of the cover, the sealing device of the hood member and the sealing device of the cover at least approximately the hood space, in particular the cylindrical hood space, completely annular surrounding sealing ring, in particular a brush ring.
  • the hood device preferably comprises one or more contact sections whose surfaces form a contact surface for the lateral application of the tool head.
  • the contact surface preferably extends at least approximately in the plane which delimits the recess, in particular the cylinder-segment-shaped recess.
  • the tool head can be applied by means of the contact surfaces laterally to a wall, a floor and / or a ceiling.
  • edge regions of adjoining walls, floors and / or ceilings can be processed easily and efficiently.
  • the hood element may, for example, be formed in one piece with at least one contact section of the hood device.
  • the hood device comprises one or more separate contact elements which form one or more contact sections of the hood device.
  • a motor shaft rotational axis of the drive motor is aligned transversely, in particular obliquely, to a longitudinal axis of the tubular rod.
  • Such an orientation of the motor shaft axis of rotation relative to the longitudinal axis of the tubular rod may preferably have a center of gravity of the hand-held one Selected grinding, specifically optimized, be. This allows a simple, efficient and fatigue-free grinding possible.
  • the longitudinal axis of the tubular rod is preferably a longitudinal axis, an axis of symmetry and / or a central axis of a central portion of the tubular rod between the drive motor and the tool head.
  • a central portion is in particular a central portion of the tubular rod, in which a center of the tubular rod (with respect to a longitudinal extent) is arranged.
  • the longitudinal axis of the tubular rod is a longitudinal axis, an axis of symmetry and / or a central axis of a central linear portion of the tubular rod between the drive motor and the tool head.
  • the longitudinal axis of the tubular rod may also preferably be a longitudinal axis of a region of engagement of the tubular rod which a user engages in a grinding operation of the grinding machine.
  • a center of gravity of the drive motor and a center of gravity of the tool head are arranged on opposite sides of the longitudinal axis of the tubular rod.
  • a motor side on which the drive motor is arranged can be distinguished from a tool side on which the tool is arranged.
  • the center of gravity of the hand-held grinding machine in the vicinity of the central portion, in particular the central portion of the tubular rod or within the tubular Stabs, in particular within the central portion, for example, the central portion, the tubular rod is arranged.
  • the tubular rod preferably comprises one or more guide elements for guiding the transmission shaft, in particular for guiding the transmission shaft within the tubular rod.
  • a guide element may be formed, for example, as a guide channel or as a guide ring.
  • the transmission shaft is designed to be flexible at least in sections.
  • the transmission shaft is at least partially curved or curved in the tubular rod, in particular in a substantially linear portion of the tubular rod.
  • the transmission shaft is guided into the tubular rod at the proximal end of the tubular rod in a direction transverse, in particular oblique, to the longitudinal axis of the tubular rod.
  • the transmission shaft is guided into the tubular rod at the proximal end of the tubular rod substantially parallel to an axis of symmetry of the proximal end of the tubular rod.
  • the proximal end of the tubular rod and / or the distal end of the tubular rod preferably comprise at least one bend.
  • tubular rod is formed completely linear, that is, that the tubular rod has a linear axis of symmetry.
  • the transmission shaft is led out of the tubular rod at the distal end of the tubular rod in a direction extending transversely, in particular obliquely, to the longitudinal axis of the tubular rod.
  • the transmission shaft at the distal end of the tubular rod is led out of the tubular rod substantially parallel to an axis of symmetry of the distal end of the tubular rod.
  • the motor shaft rotational axis and an axis of rotation of the drive motor facing the end of the transmission shaft are arranged offset from one another.
  • the drive motor and the transmission shaft are preferably connected to one another by means of an offset device, by means of which a rotational movement of a motor shaft of the drive motor can be transferred to an end of the transmission shaft which is offset from the motor shaft and faces the drive motor.
  • the offset device may be, for example, a transmission, in particular a reduction gear.
  • tubular rod which preferably forms a base of the tubular rod, through which the transmission shaft is guided into an interior of the tubular rod or led out of the interior of the tubular rod.
  • the tubular rod has one or more openings at the ends of the tubular rod, in particular openings, which form a base of the tubular rod, comprising different passage openings.
  • the transmission shaft is guided through such a passage opening in an interior of the tubular rod.
  • the transmission shaft is led out through such a passage opening from the interior of the tubular rod.
  • an opening at one end of the tubular rod, which preferably forms a base of the tubular rod, is provided, through which opening a serving as Absaugkanalabimposing a suction passage of a suction device interior of the tubular rod by means of at least one further Absaugkanalabsacrificings with the Tool head fluidly connected.
  • both openings at the ends of the tubular rod, which form the base of the tubular rod connect a serving as Absaugkanalab steel the suction of the suction device interior of the tubular rod with further suction duct sections of the suction of the suction device fluidly effective.
  • the tubular rod comprises a passage opening different from openings at the ends of the tubular rod, by means of which an interior of the tubular rod serving as a suction channel section of a suction channel of a suction device is connected in fluid communication with at least one further suction channel section of the suction channel of the suction device is.
  • the tubular rod comprises an engagement region, on which a user engages in a grinding operation of the grinding machine.
  • a center of gravity of the drive motor and a center of gravity of the tool head are preferably arranged on opposite sides of a longitudinal axis of the tubular rod, in particular on a motor side or on a tool side.
  • the hand-held grinding machine thereby preferably has a balanced weight distribution, so that a simple, efficient and as fatigue-free grinding is possible.
  • a motor shaft rotational axis of the drive motor is aligned substantially parallel to the longitudinal axis of the tubular rod.
  • a motor shaft rotational axis of the drive motor is aligned transversely, in particular obliquely, to a longitudinal axis of the tubular rod.
  • the motor shaft rotation axis is preferably offset from the longitudinal axis of the tubular rod.
  • the transmission shaft for torque transmission from the drive motor to the tool holder is preferably formed at least partially flexible.
  • the longitudinal axis of the tubular rod is preferably a longitudinal axis of an engagement area of the tubular rod on which a user engages in a grinding operation of the grinding machine.
  • the longitudinal axis of the tubular rod is in particular an axis of symmetry of the engagement region of the tubular rod.
  • the engagement region of the tubular rod is preferably arranged between the drive motor and the tool head.
  • a motor shaft of the drive motor and an end of the transmission shaft facing the drive motor are preferably arranged offset relative to one another with respect to a direction perpendicular to the longitudinal axis of the tubular rod and / or with respect to a direction parallel to the longitudinal axis of the tubular rod.
  • a motor shaft rotational axis, an axis of rotation of an end of the transmission shaft facing the drive motor and / or a rotational axis of a section of the transmission shaft extending in the engagement region of the tubular rod extend at least approximately parallel to one another.
  • a motor shaft rotational axis, an axis of rotation of an end of the transmission shaft facing the drive motor and / or a rotational axis of a section of the transmission shaft extending in the engagement region of the tubular rod extend transversely, in particular obliquely, to one another.
  • a motor shaft rotation axis, a rotation axis of the drive motor facing the end of the transmission shaft and / or a rotation axis of an extending portion of the tubular rod portion of the transmission shaft with respect to a direction perpendicular to the longitudinal axis of the tubular rod direction are offset from each other ,
  • a rotary movement of a motor shaft of the drive motor can be transferred to an end of the transmission shaft which is offset relative to the motor shaft and faces the drive motor.
  • the offset device comprises in particular a transmission, for example a reduction gear.
  • the offset device comprises a gear device for transmitting the rotational movement.
  • the offset device comprises a toothed belt device for transmitting the rotational movement.
  • a motor shaft of the drive motor and an end of the transmission shaft facing the drive motor are arranged at least approximately coaxially with one another.
  • the motor shaft of the drive motor and an end of the transmission shaft facing the drive motor preferably have a common axis of rotation.
  • a motor shaft of the drive motor and a portion of the transmission shaft extending in the region of engagement of the tubular rod are preferably offset with respect to each other with respect to a direction perpendicular to the longitudinal axis of the tubular rod.
  • the motor shaft of the drive motor and a portion of the transmission shaft extending in the region of engagement of the tubular rod are preferably connected to each other by means of a flexible portion of the transmission shaft.
  • the flexible section forms an offset device for transmitting the rotational movement of the motor shaft of the drive motor to the section of the transmission shaft extending in the engagement region of the tubular bar.
  • a distance between the drive motor and the tool head adjustable, in particular continuously adjustable, is.
  • the grinding machine may comprise a telescoping device for this purpose.
  • the tubular rod connecting the drive motor with the tool head and / or further, for example tubular, elements for connecting the drive motor to the tool head are preferably designed to be telescopic.
  • tubular rod and / or the further tubular elements, in particular tubular elements, as well as the transmission shaft are formed at least in two parts, wherein the two parts are arranged in each case displaceable relative to each other in particular with respect to the longitudinal direction.
  • the two parts of the transmission shaft are preferably positively connected to each other with respect to at least one direction perpendicular to the longitudinal axis of the tubular rod, so that by means of the transmission shaft, a rotational movement can be transmitted.
  • the grinding machine in particular the holding device of the grinding machine, may preferably comprise a gripping element.
  • the grinding machine is thereby particularly easy and convenient to handle.
  • An interior of the tubular rod can be formed, for example, in two parts, in particular along the longitudinal axis.
  • An interior part of the interior of the tubular rod preferably forms a suction channel section of a suction channel of a suction device.
  • Another interior part of the interior of the tubular rod preferably serves to receive and / or guide the transmission shaft.
  • the tool holder of the tool head is preferably detachable from the tool head, in particular from the coupling device, and by a tool holder of the same type or another type, for example with different shapes, different diameters and / or different types of movement (eg rotating or oscillating), interchangeable.
  • a hood device for covering the tool holder preferably comprises an integrally formed hood element, which surrounds the substantially cylindrical hood space.
  • a braking device for preventing undesired rotation of the hood device relative to a central element, on which the hood element is preferably rotatably arranged may comprise, for example, a clamping device and / or a device for frictional connection of the relatively rotatable components.
  • the drive motor is preferably arranged above the tubular rod.
  • the drive motor is arranged below the tubular rod, in particular in the region or after one or more bends of the tubular rod below the tubular rod.
  • the drive motor connects directly to one end of the tubular rod.
  • the motor shaft rotational axis is at least approximately identical to an axis of symmetry of the drive motor facing the end of the tubular rod.
  • a center of gravity of the hand-held grinding machine is preferably arranged within the tubular rod, in particular as close as possible to the longitudinal axis, the central axis and / or the axis of symmetry of the tubular rod. In this way, even with a rotation of the hand-held grinding machine about the longitudinal axis of the tubular rod, the occurrence of the rotational movement influencing moments can be reduced or avoided altogether.
  • the grinding machine has two gears, in particular two reduction gears, which are arranged on the proximal end and / or on the distal end of the tubular rod and / or on the tool head.
  • the center of gravity of the drive motor is preferably at least about 30 mm, in particular at least about 50 mm, for example about 55 mm, above, i. facing away from the tool head, the longitudinal axis of the tubular rod.
  • the motor shaft axis of rotation preferably includes an angle of at least about 5 °, more preferably at least about 10 °, for example about 12 °, with the longitudinal axis of the tubular rod. Further, the motor shaft rotation axis includes with the longitudinal axis of the tubular rod at an angle of at most about 45 °, in particular at most about 30 °.
  • the first embodiment of a hand-held grinding machine includes a holding device 102 for holding the grinding machine 100, a drive motor 104 for driving a tool 106, and a tool head 108 for receiving the tool 106.
  • the drive motor 104 and the tool head 108 are connected to each other by means of a tubular rod 110.
  • the tubular rod 110 comprises at least one tubular element 112.
  • the tubular rod 110 is rigid and inflexible.
  • the drive motor 104 is disposed at a proximal end 114 of the tubular rod 100.
  • the tool head 108 is disposed at a distal end 116 of the tubular rod 110.
  • the drive motor 104 is preferably arranged directly on the proximal end 114 of the tubular rod 110, for example fixed to the tubular rod 110 by means of a housing 210 of the drive motor 104.
  • a pivoting device 118 is provided.
  • the tool head 108 is pivotable relative to the tubular rod 110.
  • the tool head 108 is pivotable relative to the holding device 102 of the hand-held grinding machine 100 by one or more, in particular two, pivot axes 120.
  • the pivoting device 118 comprises at least one pivoting element 122 for this purpose.
  • the pivoting device 118 comprises a pivoting element 122 designed as a pivoting fork 124.
  • the pivoting device 118 comprises a pivoting element 122 designed as a pivoting ring 126.
  • the pivoting fork 124 is arranged on a fastening arm 129 of the holding device 102 by means of a fastening element 128, preferably rotatable or alternatively non-rotatable.
  • the attachment arm 129 is connected in particular to the tubular rod 110.
  • the pivoting fork 124 and thus also the tool head 108 held by means of the pivoting fork 124 are pivotable relative to the fastening arm 129 about a first pivot axis 120a.
  • the tool head 108 is further pivotable about a second pivot axis 120b oriented perpendicular to the first pivot axis 120a.
  • the first pivot axis 120a and the second pivot axis 120b preferably intersect, but may for example also be arranged offset from one another.
  • the hand-held grinding machine 100 includes a transmission shaft 130, by means of which a rotational movement of the drive motor 104 on a tool holder 132 for receiving the tool 106 is transferable.
  • the transmission shaft 130 extends at least in sections within the tubular rod 110.
  • the transmission shaft 130 is guided within the tubular rod 110.
  • guide elements 270 (to be described later) can be provided.
  • the tool head 108 comprises a central element 134, on which the pivoting device 118 engages.
  • the central element 134 is in particular a housing 136 for a coupling device 138 for coupling the transmission shaft 130 with the tool holder 132.
  • the coupling device 138 comprises a gear 140, in particular a planetary gear 142.
  • a tool holder 132 facing the end 144 of the transmission shaft 130 forms a drive shaft 146 of the coupling device 138 or is connected in alignment with a drive shaft 146 of the coupling device 138.
  • a tool receiving shaft 148 for example, a releasable connection device 150 for releasably connecting the tool holder 132 with the coupling device 138, forms an output shaft 152 of the coupling device 138 or is connected in alignment with such output shaft 152.
  • the drive shaft 146 and the output shaft 152 at least approximately a common axis of rotation 154.
  • the tool holder 132 facing the end 144 of the transmission shaft 130 and the tool holder 132 have a common axis of rotation 154.
  • the planetary gear 142 comprises a central wheel 143, which is also referred to as a sun gear, an outer wheel 145, which is also referred to as a ring gear, and a plurality, for example three, planetary gears 147.
  • the planetary gears 147 are rotatable on a Umlaufradong 149th arranged.
  • the drive shaft 146 engages, for example, on the central wheel 143.
  • the output shaft 152 engages, for example, on the Umlaufradrea 149.
  • the outer wheel 145 is, for example, non-rotatably connected to the housing 136.
  • the drive shaft 146 engages the Umlaufradumble 149 or the outer wheel 145.
  • the output shaft 152 then acts, for example, on the central wheel 143 or the Umlaufradong 149, while the outer wheel 145 and the central wheel 143 rotatably connected to the housing 136.
  • the tool head 108 further includes a hood device 156.
  • the hood device 156 covers the tool holder 132.
  • the hood device 156 for this purpose comprises a hood element 158, which surrounds a hood space 160.
  • the hood space 160 is substantially cylindrical, wherein a diameter of the hood space 160 is a multiple of the height of the hood space 160.
  • the hood device 156 further comprises a sealing device 161, in particular a brush device 162, which runs along a circumferential direction 164 of the hood space 160 and forms a sealing ring 165, in particular an annular brush ring 166.
  • the hood element 158, the hood space 160, the sealing device 161 and the tool holder 132 preferably have a common axis of rotation 154.
  • the axis of rotation 154 is in particular an axis of symmetry 168 of the hood element 158, the hood space 160, the sealing device 161 and the tool holder 132.
  • the sealing device 161 can be applied to a surface to be processed so that a substantially closed hood space 160 is formed by means of the hood element 158 and the surface. Contamination of the surroundings of the grinding machine 100 can thereby be avoided.
  • a suction device 170 is provided in particular.
  • the suction device 170 comprises a suction channel 172, which connects the hood space 160 to a suction device, for example a vacuum cleaner, which can be connected to a connection device 174 of the grinding machine 100 (not shown).
  • a suction device for example a vacuum cleaner
  • the suction channel 172 comprises a plurality of suction channel sections 176.
  • the suction channel 172 has a substantially annular or ring-shaped suction channel section 176a, a flexible suction channel section 176b and a tubular suction channel section 176c.
  • the substantially annular or ring-shaped suction channel section 176a (see in particular Fig. 3 and 4 ) at least partially surrounds the coupling device 138 in a substantially annular manner.
  • annular or ring-shaped suction channel section 176 a and the coupling device 138 at least approximately have a common axis of symmetry 168.
  • the annular or ring-shaped suction channel section 176a By means of the annular or ring-shaped suction channel section 176a, the abrasion occurring in the hood space 160 in the grinding operation of the grinding machine 100 can be removed from the hood space 160 particularly evenly and reliably.
  • the annular or annular portion-shaped suction channel portion 176a is fluidly connected to the flexible suction channel portion 176b by means of a transitional portion 178.
  • Both the annular or ring-shaped suction channel section 176 a and the transition section 178 are formed by a suitable shaping of the housing 136 of the tool head 108.
  • a flexible tube member 180 which includes or forms the flexible suction channel portion 176b, is disposed.
  • the flexible tube member 180 connects the housing 136 to the tubular rod 110.
  • FIG. 6 and 7 it can be seen in the in the Fig. 1 to 9 illustrated first embodiment of the hand-held grinding machine 100 provided that the drive motor 104 and the tool head 108 by means of two tubular elements 112 which are parallel to each other, are interconnected.
  • the further tubular element 112 which is arranged parallel to and offset from the tubular rod 110, is fluidly connected by means of a branch 182 to the flexible tubular element 180 forming the flexible suction channel section 176b.
  • the further tubular element 112 extends from the branch 182 below the drive motor 104 past the same to the connecting device 174.
  • the transmission shaft 130 extends within the suction channel 172.
  • Fig. 6 to 9 includes the hand-held grinding machine 100 in the in the Fig. 1 to 9 illustrated first embodiment of a telescoping device 184, by means of which a distance of the drive motor 104 of the tool head 108 is adjustable.
  • this makes it possible to set a range which can be achieved during operation of the grinding machine 100.
  • the telescoping device 184 is formed by forming the tubular members 112 constituting the tubular rod 110 and the tubular suction passage portion 176c respectively in two parts.
  • the tubular elements 112 each comprise an outer part 186 and an inner part 188, wherein the outer part 186 and the inner part 188 are displaceable relative to each other.
  • the length of the tubular elements 112 can be varied.
  • the transmission shaft 130 is preferably formed at least in two parts, wherein a first part 130a and a second part 130b are also displaceable relative to each other.
  • the first part 130a and the second part 130b of the transmission shaft 130 are positively connected to one another with respect to a direction oriented perpendicular to a pull-out direction 190 of the telescoping device 184 in order to enable a torque transmission.
  • the pull-out direction 190, a transmission shaft rotation axis 192 of the transmission shaft 130 within the tubular rod 110, in particular in one Engagement portion 208 of the tubular rod 110, a longitudinal axis 194 of the tubular rod 110, a central axis 196 of the tubular rod 110 and / or an axis of symmetry 198 of the tubular rod 110 are aligned parallel to each other.
  • the longitudinal axis 194, the center axis 196 and the axis of symmetry 198 of the tubular rod 110 are identical.
  • the drive motor 104 of the grinding machine 100 is arranged directly behind an end 200 of the tubular rod 110 facing the drive motor 104, that is behind the proximal end 114 of the tubular rod 110.
  • the drive motor 104 is coupled by means of a transmission 140, in particular a planetary gear 142, with the transmission shaft 130.
  • a motor shaft rotation axis 202 of the drive motor 104 and a transmission shaft rotation axis 192 within the tubular rod 110 are substantially identical.
  • the transmission shaft 130 is guided from the drive motor 104 through an opening 283 in the tubular rod 110, which forms a base of the tubular rod 110, at the proximal end 114 of the tubular rod 110 into the tubular bar 110 and / or through an opening 283 in the tubular rod 110, which forms a base of the tubular rod 110, led out of the tubular rod 110 at the distal end 116 of the tubular rod 110.
  • a distance of the drive motor 104 from the tool head 108 is preferably infinitely adjustable.
  • the grinding machine 100 For locking the drive motor 104 relative to the tool head 108, in particular for determining a desired length of the grinding machine 100, the grinding machine 100 comprises a locking device 204.
  • the locking device 204 may, for example, be designed as a latching device and / or as a clamping device, in particular to fix the inner parts 188 and the outer parts 186 of the tubular elements 112 relative to the pull-out direction 190 relative to one another.
  • the above-described first embodiment of the hand-held grinding machine 100 functions as follows. Before the grinding machine 100 is put into operation, a desired length of the grinding machine 100 and thus a desired distance of the drive motor 104 from the tool head 108 are adjusted by means of the telescoping device 184.
  • the tool head 108 is set at the desired distance from the drive motor 104.
  • the tool holder 132 and the tool 106 are connected to each other, for example by means of a Velcro connection.
  • a user grips the grinding machine 100 on the holding device 102, in particular on a gripping element 206 and on the engagement region 208 of the grinding machine 100.
  • the grip element 206 is arranged in particular on the housing 210 for the drive motor 104.
  • the engagement region 208 is arranged in particular on the tubular rod 110.
  • the grip element 206 and the engagement region 208 are preferably arranged on opposite sides of the drive motor 104.
  • the motor shaft 212 is coupled to the transmission shaft 130 and transmits the rotational movement by means of the transmission shaft 130 to the tool holder 132, which is coupled to the transmission shaft 130 by means of the coupling device 138.
  • the tool holder 132 and the tool 106 arranged thereon are thus set in a rotational movement.
  • the transmissions 140 namely the transmission of the coupling device 138 and the transmission 140 disposed between the drive motor 140 and the transmission shaft 130 are reduction gears, such as planetary gear 142, and reduce the rotational speed of the motor shaft 212 to a desired speed of the tool holder 132 and thus of the tool 106 ,
  • the grinding machine 100 is placed with the tool 106 on a surface to be machined, for example a wall, a floor or a ceiling.
  • the suction device 170 is provided.
  • the abrasion during machining of the surface by means of the sealing device 161 of the hood device 156 of the tool head 108 is held in the hood space 160.
  • the abrasion is removed from the hood space 160, in particular sucked, and fed to a suitable disposal.
  • the abrasion is uniformly removed from the hood space 160 by means of the annular or ring-shaped suction channel section 176a.
  • the abrasion removed by the annular or annular suction passage portion 176a is supplied via the transition portion 178 to the flexible suction duct portion 176b, from there via the branch 182 into the tubular suction duct portion 176c, removed by the connecting device 174 from the grinding machine 100, and preferably (not shown) ) Suction device supplied.
  • the grinding machine 100 is particularly quiet, so that a simple, efficient and fatigue-free as possible grinding is possible.
  • hood device 156 includes a hood member 158 having a recess 214.
  • the recess 214 is formed in particular substantially cylinder-segment-shaped.
  • a recess 214 limiting plane 216 is aligned substantially parallel to the axis of rotation 154 of the tool holder 132.
  • the plane 216 is thus arranged and the recess 214 thus dimensioned so that a tangent 220 applied to an edge 218 of the tool 106 extends at least approximately in the plane 116.
  • the recess 214 in the hood element 158 allows the tool 106 to approach, for example, an edge region or edge region of two walls.
  • an edge area between two walls would not be machinable by means of the grinding machine 100. Rather, this would require a separate processing by hand or by means of another grinding machine in this edge area to be performed.
  • the hood element 158 is arranged rotatably about the rotation axis 154 on the central element 134, in particular the housing 136. As a result, the tool head 108 can be comfortably guided along an edge region or edge region of a surface to be processed substantially independently of an alignment of the remaining grinding machine 100.
  • the hood device 156 has a braking device 222.
  • the brake device 222 may include, for example, a spring device, a friction device, or a detent device to hold the hood element 158 of the hood device 156 in a desired position.
  • Hood device 156 further includes two abutment elements 224.
  • the abutment elements 224 form abutment sections 226 of the hood device 156 for laterally applying and guiding the hood element 158 to an edge region or along an edge region, for example, in the transition region between two walls.
  • the contact sections 226 in this case have surfaces 228 which extend at least approximately in the plane 216 and form contact surfaces 230 for applying the hood element 158.
  • the abutment elements 224 and / or the abutment sections 226 may be integrally formed with the hood element 158 (see in particular FIG Fig. 12 ). Alternatively, it can be provided that the abutment elements 224 and / or the abutment sections 226 are separate, for example connected to the hood element 158, elements.
  • the sealing ring 165 of the sealing device 161 in particular the brush ring 166 of the brush device 162, not formed annularly closed due to the recess 214.
  • the sealing device 161 of the hood element 158 extends only from one side 232a of the recess 214 along the circumferential direction 164 of the hood element 158 to the side 232b of the recess 214 opposite the side 232a.
  • the recess 214 can thus result in that abrasion located in the hood space 160 can enter the environment.
  • hood device 156 includes a cover 234 to cover the recess 214.
  • the cover member 234 is arranged, for example, hinged or pivotally mounted on the hood member 158.
  • a pivot axis 236 of the cover 234 is in particular substantially perpendicular to the axis of rotation 154 and spaced therefrom arranged.
  • the cover 134 comprises a sealing device 237, in particular a brush device 238th
  • the sealing device 237 of the cover 234 is formed so that the sealing device 161 of the hood member 158 in the in the Fig. 13 to 15 illustrated covering position of the cover 234 by means of the sealing device 237 of the cover 234 to a substantially complete sealing ring 165, in particular a substantially complete annular brush ring 166, is supplemented.
  • cover position is preferably substantially closed by means of the cover 234 of the hood space 160.
  • the hand-held grinding machine 100 is particularly suitable for processing larger surfaces.
  • the cover 234 can then in the in the Fig. 16 to 18 shown open position be brought.
  • One in the Fig. 19 to 24 illustrated fourth embodiment of a hand-held grinding machine 100 differs from that in the Fig. 13 to 18 illustrated third embodiment substantially in that the cover 234 is arranged on the central element 134, in particular on the housing 136, the tool head 108 and is rotatable about the rotation axis 154.
  • the cover member 234 is preferably flexible to pass the abutment elements 224 from the in the Fig. 19 to 21 illustrated cover position in the in the FIGS. 22 to 24 shown open position and can be moved back.
  • the cover member 234 is removably attached to the hood member 158 so as to be selectively brought into the covering position or the open position.
  • One in the Fig. 25 and 26 illustrated fifth embodiment of a hand-held grinding machine 100 differs from that in the Fig. 1 to 9
  • the motor shaft rotation axis 202 and the transmission shaft rotation axis 192 are parallel but at the same time offset, in particular spaced, arranged to each other.
  • the motor shaft rotation axis 202 is further arranged in parallel and spaced from the longitudinal axis 194 of the tubular rod 110.
  • the grinding machine 100 may be arranged in a motor side 244 and a tool side 246 with respect to a longitudinal plane 242 in which the longitudinal axis 194 of the tubular rod 110 extends and which is oriented substantially perpendicular to a plane defined by the axes of symmetry 198 of the tube elements 112 be divided.
  • the drive motor 104 is arranged on the motor side 244 of the grinding machine 100.
  • a center of gravity 248 of the drive motor 104 is arranged on the motor side 244.
  • a center of gravity 250 of the tool head 108 is preferably arranged on the tool side 246.
  • the drive motor 104 and the tool head 108 are preferably arranged on opposite sides of the longitudinal axis 194 of the tubular rod 110, in particular the longitudinal plane 242.
  • a center of gravity 252 of the grinding machine 100 may be placed particularly close to the tubular rod 110, in particular into the tubular rod 110.
  • the grinding machine 100 is thereby easy to handle and allows a simple, efficient and fatigue-free as possible grinding.
  • the offset device 240 is formed as a toothed belt device 254.
  • the toothed belt device 254 can act as a transmission 140 and, as such, in particular, enable a reduction in the transmission of the rotational movement from the drive motor 104 to the transmission shaft 130.
  • illustrated fifth embodiment of the grinding machine 100 comprises a hood device 156 according to the embodiments two, three or four of the grinding machine 100.
  • One in the Fig. 27 to 29 illustrated sixth embodiment of a hand-held grinding machine 100 differs from that in the Fig. 25 and 26 illustrated fifth embodiment essentially in that the offset device 240 is formed as a gear device 256.
  • the right in the Fig. 27 to 29 illustrated sixth embodiment of the hand-held grinding machine 100 in structure and function with the fifth embodiment described in FIGS. 25 and 26 and in the Fig. 1 to 24 described embodiments one to four, so that reference is made to the above descriptions thereof in this regard.
  • One in the Fig. 30 and 31 illustrated seventh embodiment of a hand-held grinding machine 100 differs from that in the Fig. 1 to 9 illustrated first embodiment essentially in that no telescoping device 184 is provided.
  • the distance between the drive motor 104 and the tool head 108 is in the in the Fig. 30 and 31 illustrated seventh embodiment thus always constant.
  • FIG. 30 and 31 illustrated seventh embodiment of the hand-held grinding machine 100 has one or more features of the other embodiments.
  • FIGS. 32 to 35 illustrated eighth embodiment of a hand-held grinding machine 100 differs from that in the Fig. 1 to 9 illustrated first embodiment essentially in that the Drive motor 104 and the tool head 108 with only one tubular element 112, namely the tube 110 forming the tubular rod 110, are interconnected.
  • a telescoping device 184 is not provided.
  • the motor shaft rotation axis 202 is in the in the FIGS. 32 to 35 illustrated eighth embodiment of the hand-held grinding machine 100 transversely to the longitudinal axis 194 of the tubular rod 110 aligned.
  • the motor shaft rotational axis 202 and the longitudinal axis 194 of the tubular rod 110 enclose an angle of approximately 12 ° with each other.
  • the motor shaft rotation axis 202 is a motor shaft rotation axis 203 oriented transversely to the longitudinal axis 194 of the tubular rod 110.
  • the transmission shaft 130 is formed flexible at least in the region of the tubular rod 110 and bent or curved in the tubular rod 110 is arranged.
  • the transmission shaft 130 is guided transversely to the longitudinal axis 194 of the tubular rod 110 in the tubular rod 110.
  • the transmission shaft 130 is led out of the tubular rod 110 in a direction transverse to the longitudinal axis 194 of the tubular rod 110.
  • An interior 262 of the tubular rod 110 is divided into two by means of a partition wall 264.
  • An interior part 266 serves to receive and guide the transmission shaft 130th
  • Another interior portion 268 serves as a tubular suction channel portion 176c.
  • At least one guide element 270 in particular a guide channel 272, for guiding the transmission shaft 130 is arranged in the interior 262 of the tubular rod 110 (see in particular FIG Fig. 34 ).
  • the guide element 270 in particular the guide channel 272, may be formed, for example, by a groove 274 arranged in the partition wall 264.
  • the drive motor 104 and the tool head 108 are arranged on opposite sides 244, 246 of the longitudinal axis 194 of the tubular rod 110, in particular the longitudinal plane 242. This also allows an advantageous weight distribution of the hand-held grinding machine 100 are made possible.
  • FIGS. 32 to 35 illustrated eighth embodiment of the hand-held grinding machine 100 in terms of structure and function with in the Fig. 1 to 9 illustrated first embodiment, so that reference is made to the above description in this respect.
  • FIGS. 32 to 35 illustrated eighth embodiment of the hand-held grinding machine 100 can be further developed by means of one or more features of the embodiments two to seven.
  • FIGS Fig. 25 and 26 illustrated fifth embodiment substantially in that the offset device 240 by a drive motor 104 facing the flexible end 276 of the transmission shaft 130 is formed.
  • the drive motor 104 facing the end 276 of the transmission shaft 130 is connected by means of a planetary gear 142 with the drive motor 104 so that an axis of rotation 278 of the drive motor 104 facing the end 276 of the transmission shaft 130 and the motor shaft rotation axis 202 are at least approximately identical.
  • the motor shaft rotation axis 202 is arranged offset in a plane perpendicular to the longitudinal plane 242 direction away from the tool head 108.
  • the motor shaft rotational axis 202 is arranged opposite the tool head 108 with respect to the longitudinal axis 194 of the tubular rod 110.
  • the drive motor 104 is disposed on the same side of the tubular rod 110 as the tool head 108, because the tubular rod 110 includes two bends 280, by which the proximal end 114 of the tubular rod 110 facing the drive motor 104 is spaced from the longitudinal axis 194 of the tubular rod 110, in particular in the engagement region 208 of the tubular rod 110, and offset from the tool head 108 away.
  • the right in the Fig. 36 illustrated ninth embodiment of the hand-held grinding machine 100 in structure and function with in the Fig. 25 and 26 illustrated fifth embodiment or with the in the Fig. 1 to 24 illustrated embodiments one to four, so that reference is made to the foregoing descriptions in this regard.
  • FIG. 37 illustrated tenth embodiment of a hand-held grinding machine 100 differs from that in the Fig. 1 to 9 1, in that the tubular rod 110 includes a bend 280, wherein the drive motor 104 directly adjoins the proximal end 114 of the tubular rod 110 after the bend 280.
  • the motor shaft rotational axis 202 of the drive motor 104 and an axis of symmetry 282 of the proximal end 114 of the tubular rod 110 are substantially identical.
  • the motor shaft rotation axis 202 is a motor shaft rotation axis 203 oriented transversely to the longitudinal axis 194 of the tubular rod 110.
  • the bend 280 is configured such that the drive motor 104 is arranged opposite the tool head 108 with respect to the longitudinal axis 194 of the tubular rod 110.
  • FIG. 37 illustrated ninth embodiment of the hand-held grinding machine 100 thus has an advantageous weight distribution.
  • the in Fig. 37 illustrated tenth embodiment of the hand-held grinding machine 100 in terms of structure and function with in the Fig. 1 to 9 illustrated first embodiment, so that reference is made to the above description in this respect.
  • Fig. 37 illustrated tenth embodiment of the hand-held grinding machine 100 may be provided a development by means of one or more features of further embodiments.
  • An in Fig. 38 illustrated eleventh embodiment of a hand-held grinding machine 100 differs from the in Fig. 36 illustrated ninth embodiment substantially in that the tubular rod 110 at least at its proximal end 114 has no bend 280.
  • the drive motor 104 is disposed on a side of the tubular rod 110 opposite the tool head 108.
  • the transmission shaft 130 is guided through a passage opening 284 into the interior 262 of the tubular rod 110.
  • a (not shown) protective device may be provided to protect the transmission shaft 130 in the region between the housing 210 for the drive motor 104 and the tubular rod 110.
  • the passage opening 284 is preferably one of the openings 283 of the tubular rod 110, which form a base of the tubular rod 110, different passage opening 284th
  • the passage opening 284 is arranged and / or formed in a side wall 285 of the tubular rod 110.
  • Fig. 38 illustrated eleventh embodiment of the grinding machine 100 can be further developed by means of one or more features of the other embodiments.
  • FIG. 39 illustrated twelfth embodiment of a hand-held grinding machine 100 differs from that in the FIGS. 32 to 35
  • the suction channel 172 can be passed below the drive motor 104 to save space.
  • the housing 210 can thereby be made particularly compact.
  • the in Fig. 39 illustrated twelfth embodiment of the hand-held grinding machine 100 in terms of design and function with in the FIGS. 32 to 35 described eighth embodiment, so that reference is made to the above description thereof in this regard.
  • FIG. 39 illustrated twelfth embodiment of the grinding machine 100 can be further developed by means of one or more features of the other embodiments.
  • FIG. 40 illustrated thirteenth embodiment of a hand-held grinding machine 100 differs from that in Fig. 39 illustrated twelfth embodiment essentially in that the tubular rod 110 comprises a plurality of bends 280.
  • the tubular rod 110 thus has a plurality of longitudinal axes 194.
  • tubular rod 110 has a longitudinal axis 286 of a central portion 288 of the tubular rod 110.
  • the central section 288 is, in particular, a central linear section 288 between the drive motor 104 and the tool head 108.
  • the central portion 288 is in particular the engagement region 208 of the tubular rod 110, on which a user engages in the grinding operation of the grinding machine 100.
  • the central portion 288 of the tubular rod 110 is particularly that portion of the tubular rod 110 in which or near which the center of gravity 252 of the hand-held grinding machine 100 is located.
  • the right in the Fig. 40 illustrated thirteenth embodiment of the hand-held grinding machine 100 in structure and function with the in Fig. 39 illustrated twelfth embodiment, so that reference is made to the above description in this respect.
  • Fig. 40 illustrated thirteenth embodiment of the grinding machine 100 may be further developed by means of one or more features of the other embodiments.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)

Claims (13)

  1. Ponceuse à main (100), comprenant un dispositif de maintien (102) pour maintenir la ponceuse (100), un moteur d'entraînement (104) et une tête d'outil (108),
    dans laquelle le dispositif de maintien (102) comprend une tige sensiblement tubulaire (110), qui comprend une extrémité proximale (114) et une extrémité distale (116),
    dans laquelle le moteur d'entraînement (104) est agencé à l'extrémité proximale (114),
    dans laquelle la tête d'outil (108) est agencée à l'extrémité distale (116), dans laquelle la ponceuse (100) comprend un arbre de transmission (130), qui relie le moteur d'entraînement (104) pour la transmission de couple à un logement d'outil (132) de la tête d'outil (108) et s'étend au moins par section à l'intérieur de la tige tubulaire (110),
    dans laquelle la tête d'outil (108) comprend un dispositif de calotte (156) pour le recouvrement du logement d'outil (132),
    dans laquelle le dispositif de calotte (156) comprend un élément de calotte (158), qui comprend un espace de calotte sensiblement cylindrique (160),
    dans laquelle le logement d'outil (132) peut être agencé conjointement avec un outil qui y est agencé (106) au moins par section dans l'espace de calotte (160),
    caractérisée en ce que l'élément de calotte (158) comprend un évidement en forme de segment cylindrique (214), de sorte qu'une tangente (220), qui s'applique sur un bord (218) de l'outil (106) agencé dans le logement d'outil (132), s'étend sensiblement dans un plan (216) limitant l'évidement en forme de segment cylindrique (214), en ce que le logement d'outil (132), une extrémité (144) de l'arbre de transmission (130) tournée vers le logement d'outil (132) et l'élément de calotte (158) sont agencés au niveau d'un élément central (134) de la tête d'outil (108) de manière rotative autour d'axes de rotation (154) s'étendant au moins approximativement parallèlement l'un à l'autre,
    et en ce qu'une section de canal d'aspiration sensiblement annulaire ou en forme de section d'anneau (176a) d'un canal d'aspiration (172) d'un dispositif d'aspiration (170) de la ponceuse (100) est formée par l'élément central (134).
  2. Ponceuse à main (100) selon la revendication 1, caractérisée en ce que le logement d'outil (132), une extrémité (144) de l'arbre de transmission (130) tournée vers le logement d'outil (132) et l'élément de calotte (158) sont agencés au niveau de l'élément central (134) de la tête d'outil (108) de manière rotative autour d'un axe de rotation (154) commun.
  3. Ponceuse à main (100) selon l'une quelconque des revendications 1 ou 2, caractérisée en ce que l'élément central (134) de la tête d'outil (108) est relié au dispositif de maintien (102) de manière pivotante autour d'un ou plusieurs axes de pivotement (120).
  4. Ponceuse à main (100) selon l'une quelconque des revendications 1 à 3, caractérisée en ce qu'un élément central (134) de la tête d'outil (108) est un boîtier (136) pour un dispositif de couplage (138) pour le couplage de l'arbre de transmission (130) au logement d'outil (132).
  5. Ponceuse à main (100) selon l'une quelconque des revendications 1 à 4, caractérisée en ce que le dispositif de calotte (156) comprend un dispositif de freinage (222), au moyen duquel un mouvement de rotation indésirable de l'élément de calotte (158) peut être freiné.
  6. Ponceuse à main (100) selon l'une quelconque des revendications 1 à 5, caractérisée en ce que le dispositif de calotte (156) comprend un élément de recouvrement (234), au moyen duquel l'évidement en forme de segment cylindrique (214) peut être recouvert dans l'élément de calotte (158).
  7. Ponceuse à main (100) selon la revendication 6, caractérisée en ce que l'élément de recouvrement (234) peut être amené dans une position de recouvrement, dans laquelle l'évidement en forme de segment cylindrique (214) est recouvert, et une position ouverte, dans laquelle l'espace de calotte (160) est accessible par l'évidement (214).
  8. Ponceuse à main (100) selon l'une quelconque des revendications 6 ou 7, caractérisée en ce que l'élément de recouvrement (234) est agencé de manière rotative, pivotante, rabattable et/ou amovible au niveau de l'élément de calotte (158).
  9. Ponceuse à main (100) selon l'une quelconque des revendications 6 à 8, caractérisée en ce que l'élément de recouvrement (234) est rotatif ou pivotant autour d'un axe de pivotement (236) orienté au moins approximativement perpendiculairement à l'axe de rotation (154) du logement d'outil (132).
  10. Ponceuse à main (100) selon l'une quelconque des revendications 6 à 9, caractérisée en ce que l'élément de recouvrement (234) est rotatif ou pivotant autour d'un axe de rotation (154) orienté au moins approximativement parallèlement à l'axe de rotation (154) du logement d'outil (132).
  11. Ponceuse à main (100) selon l'une quelconque des revendications 6 à 10, caractérisée en ce
    que l'élément de calotte (158) comprend un dispositif d'étanchéité (161), qui s'étend le long de la circonférence de l'espace de calotte cylindrique (160) au moins approximativement d'un côté (232a/232b) de l'évidement en forme de segment cylindrique (214) jusqu'au côté opposé (232a/232b) à ce côté (232a/232b) de l'évidement en forme de segment cylindrique (214), et
    que l'élément de recouvrement (234) comprend un dispositif d'étanchéité (237), qui est agencé au niveau de l'élément de recouvrement (234) de sorte que dans une position de recouvrement de l'élément de recouvrement (234), le dispositif d'étanchéité (161) de l'élément de calotte (158) et le dispositif d'étanchéité (237) de l'élément de recouvrement (234) forment un anneau d'étanchéité (165) entourant entièrement de manière annulaire au moins approximativement l'espace de calotte cylindrique (160).
  12. Ponceuse à main (100) selon l'une quelconque des revendications 1 à 11, caractérisée en ce que le dispositif de calotte (156) présente une ou plusieurs sections d'application (226), dont les surfaces (228) forment une surface d'application (230) pour l'application latérale de la tête d'outil (108), dans laquelle la surface d'application (230) s'étend au moins approximativement dans le plan (216), qui limite l'évidement en forme de segment cylindrique (214).
  13. Ponceuse à main (100) selon l'une quelconque des revendications 1 à 12, caractérisée en ce que l'élément de calotte (158) est réalisé d'un seul tenant avec au moins une section d'application (226) du dispositif de calotte (156).
EP13799083.4A 2012-12-07 2013-12-04 Ponceuse à main Active EP2928640B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16190759.7A EP3132891B1 (fr) 2012-12-07 2013-12-04 Polisseuse portative

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012111987.2A DE102012111987A1 (de) 2012-12-07 2012-12-07 Handgehaltene Schleifmaschine
PCT/EP2013/075541 WO2014086866A1 (fr) 2012-12-07 2013-12-04 Ponceuse à main

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP16190759.7A Division-Into EP3132891B1 (fr) 2012-12-07 2013-12-04 Polisseuse portative
EP16190759.7A Division EP3132891B1 (fr) 2012-12-07 2013-12-04 Polisseuse portative

Publications (2)

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EP2928640A1 EP2928640A1 (fr) 2015-10-14
EP2928640B1 true EP2928640B1 (fr) 2019-02-06

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EP13799083.4A Active EP2928640B1 (fr) 2012-12-07 2013-12-04 Ponceuse à main
EP16190759.7A Not-in-force EP3132891B1 (fr) 2012-12-07 2013-12-04 Polisseuse portative

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EP16190759.7A Not-in-force EP3132891B1 (fr) 2012-12-07 2013-12-04 Polisseuse portative

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US (1) US9387566B2 (fr)
EP (2) EP2928640B1 (fr)
CN (1) CN104797379B (fr)
CA (1) CA2890302A1 (fr)
DE (1) DE102012111987A1 (fr)
WO (1) WO2014086866A1 (fr)

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CN104416437B (zh) * 2013-09-09 2017-12-29 麦启羡 自找平砂纸打磨机
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JP6571463B2 (ja) * 2015-09-10 2019-09-04 株式会社マキタ グラインダ、及びカバー
TWI617391B (zh) * 2016-01-25 2018-03-11 Nitto Kohki Co., Ltd. 氣動工具
DE102016106782A1 (de) * 2016-04-13 2017-10-19 Festool Gmbh Hand-Werkzeugmaschine mit einer Abdeckeinrichtung
JP7100527B2 (ja) * 2018-08-06 2022-07-13 株式会社マキタ カバーおよび工具
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DE202019106152U1 (de) * 2019-11-05 2021-02-09 Festool Gmbh Handgeführte Werkzeugmaschine
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DE202023105259U1 (de) 2023-09-12 2023-10-16 Flex-Elektrowerkzeuge Gmbh Montageeinheit sowie Werkzeugmaschineneinheit

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Also Published As

Publication number Publication date
CN104797379A (zh) 2015-07-22
EP3132891A3 (fr) 2017-03-01
US9387566B2 (en) 2016-07-12
DE102012111987A1 (de) 2014-06-12
CN104797379B (zh) 2017-03-08
EP3132891B1 (fr) 2018-06-06
US20150231756A1 (en) 2015-08-20
EP2928640A1 (fr) 2015-10-14
WO2014086866A1 (fr) 2014-06-12
EP3132891A2 (fr) 2017-02-22
WO2014086866A4 (fr) 2014-07-31
CA2890302A1 (fr) 2014-06-12

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