EP3132891A2 - Handheld grinding machine - Google Patents

Abstract

A hand-held grinding machine comprising holding means for holding the grinding machine, a drive motor, and a tool head, the holding means comprising a substantially tubular rod having a proximal end and a distal end, the drive motor being disposed at the proximal end the tool head is arranged at the distal end, wherein the grinding machine 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, wherein the tool head comprises a hood device for covering the tool holder, wherein the hood device a hood element comprises, which comprises a substantially cylindrical hood space, wherein the tool holder can be arranged at least partially in the hood space together with a tool arranged thereon, to create n, which allows a simple, efficient and fatigue-free as possible loops, it is proposed that the hood member comprises a cylinder-segment-shaped recess, so that a tangent which rests on an edge of the tool holder arranged in the tool, in a substantially the cylinder segment-shaped recess defining plane runs.

Description

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.

This object is achieved by a hand-held grinding machine according to claim 1.

In one embodiment of the invention, it is provided that 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.

It can be advantageous if the 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.

In particular, it may be provided that 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.

By means of a substantially annular or ring-shaped suction channel section, which at least partially surrounds the coupling device for coupling the transmission shaft to the tool holder, a uniform suction in the region of the tool holder, in particular a uniform suction of abrasion during grinding, can be made possible.

It may be favorable if 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.

In one embodiment of the invention, it is provided that the tool holder and a tool receiving end facing the transmission shaft are connected to each other by means of a planetary gear.

In particular, it can be provided that the coupling device for coupling the transmission shaft with the tool holder comprises a planetary gear or is formed by a planetary gear.

Under 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.

Preferably, a drive shaft of the coupling device is aligned with an output shaft of the coupling device.

In one embodiment of the invention, it is provided that the substantially annular or annular portion-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 each other.

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.

In particular, the tool head is connected by means of a pivoting device about one or more pivot axes pivotally connected to the holding device.

It may be advantageous if 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.

In particular, it may be provided that an end of the transmission shaft facing the tool receptacle and the tool receptacle have a common axis of rotation in each pivot position.

In one embodiment of the invention, it is provided that the hand-held grinding machine comprises two or more gears, in particular reduction gear, for coupling the drive motor with the tool holder.

Preferably, 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.

It may be favorable if 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.

Alternatively or additionally, it can be provided that 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 Absaugkanalabschnitt 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.

Preferably, 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.

In particular, it may be provided that 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.

It can be advantageous if the 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.

Alternatively, it may be provided that the substantially annular or annular portion-shaped suction channel section is formed at least in sections by the housing of the coupling device.

Preferably, 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. In particular, it can be provided that 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. In particular, 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.

In one embodiment of the invention it is provided that 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.

It may be favorable if a rotation axis (rotation axis) of a tool receptacle facing the end of the transmission shaft and 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.

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.

It may be favorable if the tool head comprises a hood device for covering the tool holder.

The hood device preferably comprises a hood element.

It may be favorable if 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 preferably be arranged at least in sections in the hood space.

In particular, it can be provided that the tool holder can be arranged at least in sections in the hood space together with a tool arranged thereon.

In one embodiment of the invention, it is provided that the hood element comprises a recess, in particular a cylinder-segment-shaped recess.

A tangent, which rests on an edge of the tool holder arranged in the tool, preferably extends substantially in one of the 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.

By means of a recess in the hood element, 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.

By such a hood element with a particular cylinder-segment-shaped recess thus a simple and efficient as possible and fatigue-free grinding is possible.

The tool holder, the transmission shaft and the hood element are preferably rotatably arranged on a central element of the tool head.

In particular, it may be provided that the tool holder, an end of the transmission shaft facing the tool holder and the hood element are arranged 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.

It may be favorable if 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.

It can be provided that 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.

It may be favorable if 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.

Through the use of a cover, it is preferably possible to simplify extraction of abrasion occurring in the grinding operation of the grinding machine. In particular, by means of 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. In this way, 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.

In particular, it can be provided that the cover element is rotatable or pivotable about an (approximately) approximately perpendicular to the axis of rotation of the tool holder aligned (pivot) axis.

Alternatively, it may be provided that the cover element is rotatable or pivotable about an (approximately) parallel to the axis of rotation of the tool holder aligned (rotary) axis.

In particular, it may be provided that 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. It can be advantageous if 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. In particular, in this way 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. As a result, 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.

In particular, it may be provided that 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.

It may be favorable if the cover element comprises a sealing device, for example a brush device.

By means of 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.

Preferably, 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.

In particular, the tool head can be applied by means of the contact surfaces laterally to a wall, a floor and / or a ceiling. As a result, in particular 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.

Furthermore, it can be provided that the hood device comprises one or more separate contact elements which form one or more contact sections of the hood device.

In a further embodiment of the invention it is provided that 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.

It can be provided that 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.

It may be favorable if 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.

Preferably, with respect to 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.

In particular, it can be provided that 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.

In one embodiment of the invention, it is provided that the transmission shaft is designed to be flexible at least in sections.

Preferably, 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.

It may be favorable if 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.

It can further be provided that 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.

However, it may also be beneficial if the tubular rod is formed completely linear, that is, that the tubular rod has a linear axis of symmetry.

It may be favorable if 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.

Further, it may be provided that 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.

In one embodiment of the invention, it is provided that 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.

It may be favorable if an opening is provided at one end of the 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.

Alternatively or additionally, it can be provided that 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.

Preferably, the transmission shaft is guided through such a passage opening in an interior of the tubular rod.

Alternatively or additionally, it can be provided that the transmission shaft is led out through such a passage opening from the interior of the tubular rod.

It may be favorable if 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 Absaugkanalabschnitt a suction passage of a suction device interior of the tubular rod by means of at least one further Absaugkanalabschnitts with the Tool head fluidly connected.

In particular, it can be provided that both openings at the ends of the tubular rod, which form the base of the tubular rod, connect a serving as Absaugkanalabschnitt 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.

Alternatively or additionally, it may be provided that 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 to at least one further suction channel section of the suction channel of the suction device is.

In one embodiment of the invention, it is provided that 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.

It may be advantageous if a motor shaft rotational axis of the drive motor is aligned substantially parallel to the longitudinal axis of the tubular rod.

Alternatively, it can be provided that 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.

Under a staggered arrangement is in particular a spaced, skewed or parallel arrangement to understand.

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.

In one embodiment of the invention, it is provided that 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.

Furthermore, it can be provided that 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.

In one embodiment of the invention, it is provided that 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 ,

It may be favorable when the drive motor and the transmission shaft are interconnected by means of an offset device.

Preferably, by means of the offset device, 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.

In particular, it can be provided that the offset device comprises a gear device for transmitting the rotational movement.

Furthermore, it can be provided that the offset device comprises a toothed belt device for transmitting the rotational movement.

It may be favorable if 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.

In particular, 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.

In one embodiment of the invention can be provided that 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.

For example, it can be provided that the 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.

Relative to a position of the hand-held grinding machine, in which the tool head with the tool holder or a tool received on the tool holder rests on a floor, the drive motor is preferably arranged above the tubular rod.

However, it can also be provided that 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.

Furthermore, it can be provided that the drive motor connects directly to one end of the tubular rod. In particular, it can be provided in this case that 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.

Preferably, 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 °.

All of the features described above, as well as the features described below in connection with the embodiments can allow an amount to a simple, efficient and fatigue-free grinding by means of hand-held grinder and are therefore combined with each other to form advantageous embodiments of the invention.

Further preferred features and / or advantages of the invention are the subject of the following description and the drawings of exemplary embodiments.

Fig. 1

eine schematische perspektivische Darstellung einer ersten Ausführungsform einer handgehaltenen Schleifmaschine;

Fig. 2

eine schematische Seitenansicht eines Werkzeugkopfs der Schleifmaschine aus Fig. 1;

Fig. 3

einen vertikalen Längsschnitt durch den Werkzeugkopf der Schleifmaschine aus Fig. 1;

Fig. 4

eine vergrößerte Darstellung einer Kopplungsvorrichtung des Werkzeugkopfs aus Fig. 3;

Fig. 5

einen schematischen horizontalen Schnitt durch den Werkzeugkopf längs der Linie 5 - 5 in Fig. 4;

Fig. 6

eine schematische, teilweise geschnittene Seitendarstellung der Schleifmaschine aus Fig. 1 in einer vollständig eingeschobenen Stellung der Schleifmaschine;

Fig. 7

eine vergrößerte Darstellung des Bereichs VII in Fig. 6;

Fig. 8

eine der Fig. 6 entsprechende schematische Seitenansicht der Schleifmaschine aus Fig. 1 in einer vollständig ausgezogenen Stellung derselben;

Fig. 9

eine vergrößerte Darstellung des Bereichs IX in Fig. 8;

Fig. 10

eine schematische Seitenansicht eines Werkzeugkopfs einer zweiten Ausführungsform einer Schleifmaschine, bei welcher eine Haubenvorrichtung mit einer zylindersegmentförmigen Ausnehmung vorgesehen ist;

Fig. 11

eine schematische Draufsicht auf den Werkzeugkopf aus Fig. 10;

Fig. 12

eine schematische perspektivische Darstellung des Werkzeugkopfs aus Fig. 10;

Fig. 13

eine der Fig. 10 entsprechende schematische Seitenansicht eines Werkzeugkopfs einer dritten Ausführungsform einer Schleifmaschine, bei welcher die Haubenvorrichtung ein Abdeckelement zur Abdeckung der Ausnehmung umfasst, wobei das Abdeckelement in einer Abdeckstellung angeordnet ist;

Fig. 14

eine der Fig. 11 entsprechende schematische Darstellung des Werkzeugkopfs aus Fig. 13;

Fig. 15

eine der Fig. 12 entsprechende schematische perspektivische Darstellung des Werkzeugkopfs aus Fig. 13;

Fig. 16

eine der Fig. 13 entsprechende schematische Darstellung des Werkzeugkopfs aus Fig. 13, wobei das Abdeckelement in einer Offenstellung angeordnet ist;

Fig. 17

eine der Fig. 14 entsprechende schematische Darstellung des Werkzeugkopfs aus Fig. 16;

Fig. 18

eine der Fig. 15 entsprechende schematische perspektivische Darstellung des Werkzeugkopfs aus Fig. 16;

Fig. 19

eine der Fig. 13 entsprechende schematische Seitenansicht eines Werkzeugkopfs einer vierten Ausführungsform einer Schleifmaschine, bei welcher anstelle eines klappbaren Abdeckelements ein drehbares Abdeckelement in einer Abdeckstellung angeordnet ist;

Fig. 20

eine der Fig. 14 entsprechende schematische Darstellung des Werkzeugkopfs aus Fig. 19;

Fig. 21

eine der Fig. 15 entsprechende schematische perspektivische Darstellung des Werkzeugkopfs aus Fig. 19;

Fig. 22

eine der Fig. 19 entsprechende schematische Seitenansicht des Werkzeugkopfs der vierten Ausführungsform der Schleifmaschine, wobei das Abdeckelement in einer Offenstellung angeordnet ist;

Fig. 23

eine der Fig. 20 entsprechende schematische Draufsicht auf den Werkzeugkopf aus Fig. 22;

Fig. 24

eine der Fig. 21 entsprechende schematische perspektivische Darstellung des Werkzeugkopfs aus Fig. 22;

Fig. 25

eine der Fig. 6 entsprechende, teilweise geschnittene Seitenansicht einer fünften Ausführungsform einer Schleifmaschine, bei welcher eine Versatzvorrichtung zwischen einem Antriebsmotor und einer Übertragungswelle der Schleifmaschine vorgesehen ist, wobei die Versatzvorrichtung eine Zahnriemenvorrichtung umfasst;

Fig. 26

eine vergrößerte Darstellung des Bereichs XXVI aus Fig. 25;

Fig. 27

eine der Fig. 6 entsprechende, teilweise geschnittene Seitenansicht einer sechsten Ausführungsform einer Schleifmaschine, bei welcher eine als Zahnradvorrichtung ausgebildete Versatzvorrichtung vorgesehen ist;

Fig. 28

eine schematische Draufsicht auf die Schleifmaschine gemäß Fig. 27;

Fig. 29

eine vergrößerte Darstellung des Bereichs XXIX in Fig. 27;

Fig. 30

eine der Fig. 6 entsprechende, teilweise geschnittene Seitenansicht einer siebten Ausführungsform einer Schleifmaschine, bei welcher keine Teleskopierbarkeit vorgesehen ist;

Fig. 31

eine vergrößerte Darstellung des Bereichs XXXI in Fig. 30;

Fig. 32

eine der Fig. 6 entsprechende, teilweise geschnittene Seitenansicht einer achten Ausführungsform einer Schleifmaschine, bei welcher eine Motorwellendrehachse quer zu einer Längsachse eines rohrförmigen Stabs der Schleifmaschine ausgerichtet ist;

Fig. 33

einen vertikalen Querschnitt durch den rohrförmigen Stab der Schleifmaschine aus Fig. 32 längs der Linie 33 - 33 in Fig. 32;

Fig. 34

einen vertikalen Querschnitt durch den rohrförmigen Stab der Schleifmaschine aus Fig. 32 längs der Linie 34 - 34 in Fig. 32,

Fig. 35

einen vertikalen Querschnitt durch den rohrförmigen Stab der Schleifmaschine aus Fig. 32 längs der Linie 35 - 35 in Fig. 32;

Fig. 36

eine schematische Darstellung eines dem Antriebsmotor zugewandten Abschnitts eines rohrförmigen Stabs und des Antriebsmotors einer neunten Ausführungsform einer Schleifmaschine, wobei der Antriebsmotor unterhalb des rohrförmigen Stabs angeordnet ist und der rohrförmige Stab zwei Biegungen aufweist;

Fig. 37

eine der Fig. 36 entsprechende schematische Darstellung einer zehnten Ausführungsform einer Schleifmaschine, wobei der Antriebsmotor sich an ein Ende des rohrförmigen Stabs anschließt und der rohrförmige Stab eine Biegung aufweist;

Fig. 38

eine der Fig. 36 entsprechende schematische Darstellung einer elften Ausführungsform einer Schleifmaschine, wobei der Antriebsmotor oberhalb des rohrförmigen Stabs angeordnet ist und eine durch eine flexible Übertragungswelle gebildete Versatzvorrichtung vorgesehen ist;

Fig. 39

eine der Fig. 6 entsprechende, teilweise geschnittene Seitenansicht einer zwölften Ausführungsform einer Schleifmaschine, wobei eine Motorwellendrehachse des Antriebsmotors der Schleifmaschine, eine Symmetrieachse eines dem Antriebsmotor zugewandten Endes des rohrförmigen Stabs und eine Längsachse des rohrförmigen Stabs quer zueinander ausgerichtet sind und der rohrförmige Stab sich zumindest näherungsweise linear von dem Antriebsmotor bis zu einem flexiblen Rohrelement, welches den rohrförmigen Stab mit dem Werkzeugkopf verbindet, erstreckt; und

Fig. 40

eine der Fig. 39 entsprechende, teilweise geschnittene Seitenansicht einer dreizehnten Ausführungsform einer Schleifmaschine, bei welcher die Verbindungselemente zwischen dem Antriebsmotor und dem Werkzeugkopf bezüglich einer Längsachse des rohrförmigen Stabs vor und nach einem zentralen Abschnitt des rohrförmigen Stabs mindestens eine Biegung aufweisen.

In the drawings show:

Fig. 1

a schematic perspective view of a first embodiment of a hand-held grinding machine;

Fig. 2

a schematic side view of a tool head of the grinding machine Fig. 1 ;

Fig. 3

a vertical longitudinal section through the tool head of the grinding machine Fig. 1 ;

Fig. 4

an enlarged view of a coupling device of the tool head Fig. 3 ;

Fig. 5

a schematic horizontal section through the tool head along the line 5 - 5 in Fig. 4 ;

Fig. 6

a schematic, partially sectioned side view of the grinding machine Fig. 1 in a fully inserted position of the grinding machine;

Fig. 7

an enlarged view of the area VII in Fig. 6 ;

Fig. 8

one of the Fig. 6 corresponding schematic side view of the grinding machine Fig. 1 in a fully extended position thereof;

Fig. 9

an enlarged view of the area IX in Fig. 8 ;

Fig. 10

a schematic side view of a tool head of a second embodiment of a grinding machine, in which a hood device is provided with a cylinder-segment-shaped recess;

Fig. 11

a schematic plan view of the tool head Fig. 10 ;

Fig. 12

a schematic perspective view of the tool head Fig. 10 ;

Fig. 13

one of the Fig. 10 corresponding schematic side view of a tool head of a third embodiment of a grinding machine, wherein the hood device comprises a cover for covering the recess, wherein the cover is arranged in a covering position;

Fig. 14

one of the Fig. 11 corresponding schematic representation of the tool head Fig. 13 ;

Fig. 15

one of the Fig. 12 corresponding schematic perspective view of the tool head Fig. 13 ;

Fig. 16

one of the Fig. 13 corresponding schematic representation of the tool head Fig. 13 wherein the cover member is disposed in an open position;

Fig. 17

one of the Fig. 14 corresponding schematic representation of the tool head Fig. 16 ;

Fig. 18

one of the Fig. 15 corresponding schematic perspective view of the tool head Fig. 16 ;

Fig. 19

one of the Fig. 13 corresponding schematic side view of a tool head of a fourth embodiment of a grinding machine, in which instead of a hinged cover member, a rotatable cover member is arranged in a covering position;

Fig. 20

one of the Fig. 14 corresponding schematic representation of the tool head Fig. 19 ;

Fig. 21

one of the Fig. 15 corresponding schematic perspective view of the tool head Fig. 19 ;

Fig. 22

one of the Fig. 19 corresponding schematic side view of the tool head of the fourth embodiment of the grinding machine, wherein the cover is arranged in an open position;

Fig. 23

one of the Fig. 20 corresponding schematic plan view of the tool head Fig. 22 ;

Fig. 24

one of the Fig. 21 corresponding schematic perspective view of the tool head Fig. 22 ;

Fig. 25

one of the Fig. 6 corresponding partially sectioned side view of a fifth embodiment of a grinding machine, in which an offset device between a drive motor and a transmission shaft of the grinding machine is provided, the offset device comprises a toothed belt device;

Fig. 26

an enlarged view of the range XXVI Fig. 25 ;

Fig. 27

one of the Fig. 6 corresponding, partially sectioned side view of a sixth embodiment of a grinding machine, in which an offset device designed as a gear device is provided;

Fig. 28

a schematic plan view of the grinding machine according to Fig. 27 ;

Fig. 29

an enlarged view of the area XXIX in Fig. 27 ;

Fig. 30

one of the Fig. 6 corresponding, partially sectioned side view of a seventh embodiment of a grinding machine, in which no telescoping is provided;

Fig. 31

an enlarged view of the area XXXI in Fig. 30 ;

Fig. 32

one of the Fig. 6 corresponding partially sectioned side view of an eighth embodiment of a grinding machine in which a motor shaft rotation axis is aligned transversely to a longitudinal axis of a tubular rod of the grinding machine;

Fig. 33

a vertical cross section through the tubular rod of the grinding machine Fig. 32 along the line 33 - 33 in Fig. 32 ;

Fig. 34

a vertical cross section through the tubular rod of the grinding machine Fig. 32 along the line 34 - 34 in Fig. 32 .

Fig. 35

a vertical cross section through the tubular rod of the grinding machine Fig. 32 along the line 35 - 35 in Fig. 32 ;

Fig. 36

a schematic representation of a drive motor facing portion of a tubular rod and the drive motor of a ninth embodiment of a grinding machine, wherein the drive motor is arranged below the tubular rod and the tubular rod has two bends;

Fig. 37

one of the Fig. 36 corresponding schematic representation of a tenth embodiment of a grinding machine, wherein the drive motor is connected to one end of the tubular rod and the tubular rod has a bend;

Fig. 38

one of the Fig. 36 corresponding schematic representation of an eleventh embodiment of a grinding machine, wherein the drive motor is arranged above the tubular rod and an offset device formed by a flexible transmission shaft is provided;

Fig. 39

one of the Fig. 6 corresponding, partially sectioned side view of a twelfth embodiment of a grinding machine, wherein a motor shaft rotation axis of the drive motor of the grinding machine, an axis of symmetry of the drive motor facing the end of the tubular rod and a longitudinal axis of the tubular rod are aligned transversely to each other and the tubular rod is at least approximately linearly from the drive motor extending to a flexible tube member connecting the tubular rod to the tool head; and

Fig. 40

one of the Fig. 39 corresponding partially sectioned side view of a thirteenth embodiment of a grinding machine, wherein the connecting elements between the drive motor and the tool head with respect to a longitudinal axis of the tubular rod before and after a central portion of the tubular rod having at least one bend.

Identical or functionally equivalent elements are provided with the same reference numerals in all figures.

One in the Fig. 1 to 9 The first embodiment of a hand-held grinding machine, generally designated 100, 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.

For arranging the tool head 108 at the distal end 116 of the tubular rod 110, a pivoting device 118 is provided.

By means of the pivoting device 118, the tool head 108 is pivotable relative to the tubular rod 110.

In particular, 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.

In particular, the pivoting device 118 comprises a pivoting element 122 designed as a pivoting fork 124.

Furthermore, 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.

By means of the pivoting fork 124 and the pivot ring 126, 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.

In particular, by means of the transmission shaft 130, a torque from the drive motor 104 to the tool holder 132 and the tool 106 arranged thereon can be transmitted.

The transmission shaft 130 extends at least in sections within the tubular rod 110.

Preferably, the transmission shaft 130 is guided within the tubular rod 110. For this purpose, guide elements 270 (to be described later) can be provided.

As in particular the Fig. 2 and 3 it can be seen, 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.

In particular, due to the design of the transmission 140 as a planetary gear 142, the drive shaft 146 and the output shaft 152 at least approximately a common axis of rotation 154.

Thus, 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.

Because of this common axis of rotation 154, a quiet and low-vibration operation of the grinding machine 100 can be made possible.

In particular Fig. 5 can be seen, 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 Umlaufradträger 149th arranged.

The drive shaft 146 engages, for example, on the central wheel 143.

The output shaft 152 engages, for example, on the Umlaufradträger 149.

The outer wheel 145 is, for example, non-rotatably connected to the housing 136.

In alternative embodiments, it may be provided that the drive shaft 146 engages the Umlaufradträger 149 or the outer wheel 145. The output shaft 152 then acts, for example, on the central wheel 143 or the Umlaufradträger 149, while the outer wheel 145 and the central wheel 143 rotatably connected to the housing 136.

As Fig. 3 Further, the tool head 108 further includes a hood device 156.

The hood device 156 covers the tool holder 132.

In particular, 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.

Due to the arrangement of the tool holder 132 and the tool 106 in the hood space 160, abrasion occurring during operation of the grinding machine 100 can be maintained within the tool head 108. In particular, 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.

In order to be able to remove the abrasion occurring in the grinding operation of the grinding machine 100 from the tool head 108, 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).

The suction channel 172 comprises a plurality of suction channel sections 176.

In particular, 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.

In particular, the annular or ring-shaped suction channel section 176 a and the coupling device 138 at least approximately have a common axis of symmetry 168.

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.

At the transitional portion 178, 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.

As in particular the 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.

A tubular element 112 forming the tubular rod 110, in which the transmission shaft 130 extends, adjoins the flexible suction channel section 176b and ends in the region of the drive motor 104.

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.

In the in the Fig. 1 to 9 illustrated first embodiment of the hand-held grinding machine 100 thus separate pipe elements 112 are provided for receiving the transmission shaft 130 and the tubular Absaugkanalabschnitt 176c.

However, in sections, in particular in the flexible tube element 180, the transmission shaft 130 extends within the suction channel 172.

As in particular the Fig. 6 to 9 can be seen, 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.

In particular, 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.

As a result, the length of the tubular elements 112 can be varied.

Also, 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.

In particular, the longitudinal axis 194, the center axis 196 and the axis of symmetry 198 of the tubular rod 110 are identical.

As in particular the Fig. 7 and 9 2, the drive motor 104 of the grinding machine 100 according to the first embodiment 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.

By means of the telescoping device 184, a distance of the drive motor 104 from the tool head 108 is preferably infinitely adjustable.

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.

• Vor einer Inbetriebnahme der Schleifmaschine 100 wird mittels der Teleskopiervorrichtung 184 eine gewünschte Länge der Schleifmaschine 100 und somit ein gewünschter Abstand des Antriebsmotors 104 von dem Werkzeugkopf 108 eingestellt.

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.

By means of the locking device 204, the tool head 108 is set at the desired distance from the drive motor 104.

At the tool holder 132, a tool 106 is now arranged.

The tool holder 132 and the tool 106 are connected to each other, for example by means of a Velcro connection.

To start up the grinding machine 100, 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.

Now, when the drive motor 104 is turned on, a motor shaft 212 of the drive motor 104 is set in a rotational movement.

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 ,

By means of the rotating tool 106, a grinding operation can be performed.

For this purpose, 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.

By the rotation of the tool 106, the surface is abraded.

This creates abrasion, which can contaminate the environment without proper extraction.

In the hand-held grinding machine 100 according to the Fig. 1 to 9 For the targeted removal of abrasion, the suction device 170 is provided.

For this purpose, 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. About the suction channel 172, the abrasion is removed from the hood space 160, in particular sucked, and fed to a suitable disposal.

In particular, the abrasion is uniformly removed from the hood space 160 by means of the annular or ring-shaped suction channel section 176a.

Subsequently, 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.

By using the planetary gear 142, the grinding machine 100 is particularly quiet, so that a simple, efficient and fatigue-free as possible grinding is possible.

One in the 10 to 12 illustrated second embodiment of a hand-held grinding machine 100 differs from that in the Fig. 1 to 9 illustrated in essence by the fact that the hood device 156 includes a hood member 158 having a recess 214.

The recess 214 is formed in particular substantially cylinder-segment-shaped.

As in particular the FIGS. 11 and 12 can be seen, 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.

As in particular from a comparison of Fig. 3 and 12 As can be seen, 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.

Without such a recess 214, 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.

In order to prevent undesired rotation of the hood element 158, 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.

In particular Fig. 12 can be seen, 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.

On the contrary, 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.

However, this can be prevented by suitably dimensioned suction.

Incidentally, the right in the 10 to 12 illustrated second 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.

One in the Fig. 13 to 18 illustrated third embodiment of a hand-held grinding machine 100 differs from that in the 10 to 12 illustrated second embodiment essentially in that the 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.

As in particular the Fig. 15 and 18 can be seen, 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.

In the in the Fig. 13 to 15 illustrated cover position is preferably substantially closed by means of the cover 234 of the hood space 160.

In the covering position of the cover 234 thus an undesirable leakage of abrasion from the hood space 160 can be effectively prevented.

In the covering position of the cover element 234, the hand-held grinding machine 100 is particularly suitable for processing larger surfaces. In order to edit edge regions, the cover 234 can then in the in the Fig. 16 to 18 shown open position be brought.

Incidentally, the right in the Fig. 13 to 18 illustrated third embodiment of the hand-held grinding machine 100 in terms of structure and function with in the 10 to 12 shown second embodiment or with in the Fig. 1 to 9 illustrated first embodiment, so that reference is made to the foregoing descriptions in this respect.

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.

Incidentally, the right in the Fig. 19 to 24 illustrated fourth embodiment of the hand-held grinding machine 100 in terms of construction and Function with in the Fig. 13 to 18 illustrated third embodiment, so that reference is made to the above description thereof in this regard.

In another embodiment (not shown) of a hand-held grinding machine 100, 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 first embodiment shown essentially in that the drive motor 104 is coupled to the transmission shaft 130 by means of an offset device 240.

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.

In particular Fig. 25 As can be seen, 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.

On the motor side 244 of the grinding machine 100, the drive motor 104 is arranged.

On the tool side 246 of the tool head 108 is arranged.

In particular, 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.

As a result, 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.

In particular Fig. 26 As can be seen, 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.

Incidentally, the right in the Fig. 25 and 26 illustrated fifth 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.

Furthermore, it can be provided that in the Fig. 25 and 26 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.

Incidentally, 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.

Incidentally, the right in the Fig. 30 and 31 illustrated seventh 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.

But it can also be provided that in the Fig. 30 and 31 illustrated seventh embodiment of the hand-held grinding machine 100 has one or more features of the other embodiments.

One in the 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.

In particular, 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.

At the drive motor 104 facing end 200 of the tubular rod 110, that is, at the proximal end 114 of the tubular rod 110, the transmission shaft 130 is guided transversely to the longitudinal axis 194 of the tubular rod 110 in the tubular rod 110.

At an end 260 of the tubular rod 110 facing the tool head 108, that is at the distal end 116 of 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.

Also in the in the FIGS. 32 to 35 8, 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.

Incidentally, the right in the 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.

Also in the 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.

An in Fig. 36 Ninth embodiment of hand-held grinding machine 100 is different from that shown in 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.

Due to the flexible design of the transmission shaft 130, however, an offset between the motor shaft rotational axis 202 and the longitudinal axis 194 of the tubular rod 110 is possible. In particular, therefore, an offset between the motor shaft rotation axis 202 and a rotation axis 192 of the transmission shaft 130 in the engagement region 208 of the tubular rod 110 is possible.

At the in Fig. 36 9 illustrated embodiment of the grinding machine 100, 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.

Nevertheless, 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. Incidentally, 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.

An in 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.

Also in Fig. 37 illustrated ninth embodiment of the hand-held grinding machine 100 thus has an advantageous weight distribution.

Incidentally, 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.

Alternatively or in addition, the in 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. To protect the transmission shaft 130 in the region between the housing 210 for the drive motor 104 and the tubular rod 110, a (not shown) protective device may be provided.

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

In particular, the passage opening 284 is arranged and / or formed in a side wall 285 of the tubular rod 110.

Incidentally, the in Fig. 38 illustrated eleventh embodiment of the hand-held grinding machine 100 in terms of design and function with in Fig. 36 illustrated ninth embodiment, so that reference is made to the above description.

Also in 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.

An in Fig. 39 illustrated twelfth embodiment of a hand-held grinding machine 100 differs from that in the FIGS. 32 to 35 The eighth embodiment illustrated essentially in that the interior portion 266 of the tubular rod 110 forming the tubular suction channel section 176c comprises a bend 280. In this way, the suction channel 172 can be passed below the drive motor 104 to save space. The housing 210 can thereby be made particularly compact.

Incidentally, 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.

Also in 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.

An in 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.

In particular, the 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.

Incidentally, 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.

Also in 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.

1. 1. Handgehaltene Schleifmaschine (100), umfassend eine Halteeinrichtung (102) zum Halten der Schleifmaschine (100), einen Antriebsmotor (104) und einen Werkzeugkopf (108),
   wobei die Halteeinrichtung (102) einen im Wesentlichen rohrförmigen Stab (110) umfasst, welcher ein proximales Ende (114) und ein distales Ende (116) umfasst,
   wobei der Antriebsmotor (104) an dem proximalen Ende (114) angeordnet ist,
   wobei der Werkzeugkopf (108) an dem distalen Ende (116) angeordnet ist,
   wobei die Schleifmaschine (100) eine Übertragungswelle (130) umfasst, welche den Antriebsmotor (104) zur Drehmomentübertragung mit einer Werkzeugaufnahme (132) des Werkzeugkopfs (108) verbindet und zumindest abschnittsweise innerhalb des rohrförmigen Stabs (110) verläuft.
2. 2. Handgehaltene Schleifmaschine (100) nach Ausführungsform 1, dadurch gekennzeichnet, dass die Schleifmaschine (100) eine Absaugvorrichtung (170) umfasst, welche einen Absaugkanal (172) umfasst, der einen im Wesentlichen ringförmigen oder ringabschnittförmigen Absaugkanalabschnitt (176a) aufweist,
   wobei der im Wesentlichen ringförmige oder ringabschnittförmige Absaugkanalabschnitt (176a) eine Kopplungsvorrichtung (138) zur Kopplung der Übertragungswelle (130) mit der Werkzeugaufnahme (132) zumindest abschnittsweise umgibt.
3. 3. Handgehaltene Schleifmaschine (100) nach Ausführungsform 2, dadurch gekennzeichnet, dass der im Wesentlichen ringförmige oder ringabschnittförmige Absaugkanalabschnitt (176a) ein Getriebe (140) zur Kopplung der Übertragungswelle (130) mit der Werkzeugaufnahme (132) zumindest näherungsweise konzentrisch umgibt.
4. 4. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 3, dadurch gekennzeichnet, dass die Werkzeugaufnahme (132) und ein der Werkzeugaufnahme (132) zugewandtes Ende (144) der Übertragungswelle (130) mittels eines Planetenradgetriebes (142) miteinander verbunden sind.
5. 5. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 4, dadurch gekennzeichnet, dass ein im Wesentlichen ringförmiger oder ringabschnittförmiger Absaugkanalabschnitt (176a) eines Absaugkanals (172) einer Absaugvorrichtung (170), die Werkzeugaufnahme (132), ein der Werkzeugaufnahme (132) zugewandtes Ende (144) der Übertragungswelle (130) und/oder eine Haubenvorrichtung (156) zur Abdeckung der Werkzeugaufnahme (132) im Wesentlichen koaxial zueinander angeordnet sind.
6. 6. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 5, dadurch gekennzeichnet, dass die Übertragungswelle (130) zumindest abschnittsweise flexibel ausgebildet ist.
7. 7. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 6, dadurch gekennzeichnet, dass der Werkzeugkopf (108) um eine oder mehrere Schwenkachsen (120) schwenkbar mit der Halteeinrichtung (102) verbunden ist.
8. 8. Handgehaltene Schleifmaschine (100) nach Ausführungsform 7, dadurch gekennzeichnet, dass ein der Werkzeugaufnahme (132) zugewandtes Ende (144) der Übertragungswelle (130) zusammen mit dem Werkzeugkopf (108) um eine oder mehrere Schwenkachsen (120) schwenkbar ist.
9. 9. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 8, dadurch gekennzeichnet, dass die handgehaltene Schleifmaschine (100) zwei oder mehr Getriebe (140) zur Kopplung des Antriebsmotors (104) mit der Werkzeugaufnahme (132) umfasst, wobei sowohl an einem dem Antriebsmotor (104) zugewandten Ende (276) der Übertragungswelle (130) als auch an einem der Werkzeugaufnahme (132) zugewandten Ende (144) der Übertragungswelle (130) jeweils mindestens ein Getriebe (140) angeordnet ist.
10. 10. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 9, dadurch gekennzeichnet, dass der Absaugkanal (172) der Absaugvorrichtung (170) der handgehaltenen Schleifmaschine (100) und die Übertragungswelle (130) zumindest abschnittsweise zusammen in einem Rohrelement (112) der handgehaltenen Schleifmaschine (100) verlaufen.
11. 11. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 10, dadurch gekennzeichnet, dass der im Wesentlichen ringförmige oder ringabschnittförmige Absaugkanalabschnitt (176a) raumfest mit der Kopplungsvorrichtung (138) verbunden ist, mittels welcher die Werkzeugaufnahme (132) und ein der Werkzeugaufnahme (132) zugewandtes Ende (144) der Übertragungswelle (130) miteinander verbunden sind.
12. 12. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 11, dadurch gekennzeichnet, dass der im Wesentlichen ringförmige oder ringabschnittförmige Absaugkanalabschnitt (176a) zumindest abschnittsweise durch ein Gehäuse (136) der Kopplungsvorrichtung (138) zur Kopplung der Übertragungswelle (130) mit der Werkzeugaufnahme (132) gebildet ist.
13. 13. Handgehaltene Schleifmaschine (100) nach Ausführungsform 12, dadurch gekennzeichnet, dass das Gehäuse (136) mittels mindestens eines Schwenkelements (122) schwenkbar mit der Halteeinrichtung (102) verbunden ist.
14. 14. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 13, dadurch gekennzeichnet, dass der im Wesentlichen ringförmige oder ringabschnittförmige Absaugkanalabschnitt (176a) des Absaugkanals (172) und ein innerhalb eines rohrförmigen Stabs (110) der Halteeinrichtung (102) verlaufender Absaugkanalabschnitt (176c) des Absaugkanals (172) mittels eines flexiblen Absaugkanalabschnitts (176b) des Absaugkanals (172) fluidwirksam miteinander verbunden sind.
15. 15. Handgehaltene Schleifmaschine (100) nach Ausführungsform 14, dadurch gekennzeichnet, dass die Übertragungswelle (130) zumindest abschnittsweise innerhalb eines den flexiblen Absaugkanalabschnitt (176b) umfassenden und/oder bildenden flexiblen Rohrelements (180) verläuft.
16. 16. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 15, dadurch gekennzeichnet, dass die Werkzeugaufnahme (132) mittels einer Kopplungsvorrichtung (138) wahlweise mit der Übertragungswelle (130) koppelbar oder von der Übertragungswelle (130) entfernbar ist.
17. 17. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 16, dadurch gekennzeichnet, dass der Werkzeugkopf (108) eine Haubenvorrichtung (156) zur Abdeckung der Werkzeugaufnahme (132) umfasst,
    wobei die Haubenvorrichtung (156) ein Haubenelement (158) umfasst, welches einen im Wesentlichen zylindrischen Haubenraum (160) umfasst,
    wobei die Werkzeugaufnahme (132) zusammen mit einem daran angeordneten Werkzeug (106) zumindest abschnittsweise in dem Haubenraum (160) anordenbar ist.
18. 18. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 17, dadurch gekennzeichnet, dass das Haubenelement (158) eine zylindersegmentförmige Ausnehmung (214) umfasst, so dass eine Tangente (220), welche an einem Rand (218) des in der Werkzeugaufnahme (132) angeordneten Werkzeugs (106) anliegt, im Wesentlichen in einer die zylindersegmentförmige Ausnehmung (214) begrenzenden Ebene (216) verläuft.
19. 19. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 18, dadurch gekennzeichnet, dass die Werkzeugaufnahme (132), die Übertragungswelle (130) und das Haubenelement (158) drehbar an einem Zentralelement (134) des Werkzeugkopfes (108) angeordnet sind.
20. 20. Handgehaltene Schleifmaschine (100) nach Ausführungsform 19, dadurch gekennzeichnet, dass die Werkzeugaufnahme (132), ein der Werkzeugaufnahme (132) zugewandtes Ende (144) der Übertragungswelle (130) und das Haubenelement (158) um zumindest näherungsweise parallel zueinander verlaufende Drehachsen (154) drehbar an dem Zentralelement (134) des Werkzeugkopfes (108) angeordnet sind.
21. 21. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 19 oder 20, dadurch gekennzeichnet, dass die Werkzeugaufnahme (132), ein der Werkzeugaufnahme (132) zugewandtes Ende (144) der Übertragungswelle (130) und das Haubenelement (158) um eine gemeinsame Drehachse (154) drehbar an dem Zentralelement (134) des Werkzeugkopfes (108) angeordnet sind.
22. 22. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 21, dadurch gekennzeichnet, dass ein Zentralelement (134) des Werkzeugkopfes (108) um eine oder mehrere Schwenkachsen (120) schwenkbar mit der Halteeinrichtung (102) verbunden ist.
23. 23. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 22, dadurch gekennzeichnet, dass ein Zentralelement (134) des Werkzeugkopfes (108) ein Gehäuse (136) für eine Kopplungsvorrichtung (138) zur Kopplung der Übertragungswelle (130) mit der Werkzeugaufnahme (132) ist.
24. 24. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 23, dadurch gekennzeichnet, dass die Haubenvorrichtung (156) eine Bremsvorrichtung (222) umfasst, mittels welcher eine unerwünschte Drehbewegung des Haubenelements (158) abbremsbar ist.
25. 25. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 24, dadurch gekennzeichnet, dass die Haubenvorrichtung (156) ein Abdeckelement (234) umfasst, mittels welchem die zylindersegmentförmige Ausnehmung (214) in dem Haubenelement (158) abdeckbar ist.
26. 26. Handgehaltene Schleifmaschine (100) nach Ausführungsform 25, dadurch gekennzeichnet, dass das Abdeckelement (234) in eine Abdeckstellung, in welcher die zylindersegmentförmige Ausnehmung (214) abgedeckt ist, und in eine Offenstellung, in welcher der Haubenraum (160) durch die Ausnehmung (214) zugänglich ist, bringbar ist.
27. 27. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 25 oder 26, dadurch gekennzeichnet, dass das Abdeckelement (234) drehbar, schwenkbar, klappbar und/oder lösbar an dem Haubenelement (158) angeordnet ist.
28. 28. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 25 bis 27, dadurch gekennzeichnet, dass das Abdeckelement (234) um eine zumindest näherungsweise senkrecht zur Drehachse (154) der Werkzeugaufnahme (132) ausgerichtete Schwenkachse (236) drehbar oder schwenkbar ist.
29. 29. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 25 bis 28, dadurch gekennzeichnet, dass das Abdeckelement (234) um eine zumindest näherungsweise parallel zur Drehachse (154) der Werkzeugaufnahme (132) ausgerichtete Drehachse (154) drehbar oder schwenkbar ist.
30. 30. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 25 bis 29, dadurch gekennzeichnet, dass das Haubenelement (158) eine Abdichtungsvorrichtung (161) umfasst, welche sich längs des Umfangs des zylindrischen Haubenraums (160) zumindest näherungsweise von einer Seite (232a; 232b) der zylindersegmentförmigen Ausnehmung (214) bis zu der dieser Seite (232a; 232b) gegenüberliegenden Seite (232a; 232b) der zylindersegmentförmigen Ausnehmung (214) erstreckt.
31. 31. Handgehaltene Schleifmaschine (100) nach Ausführungsform 30, dadurch gekennzeichnet, dass das Abdeckelement (234) eine Abdichtungsvorrichtung (237) umfasst, welche so an dem Abdeckelement (234) angeordnet ist, dass in einer Abdeckstellung des Abdeckelements (234) die Abdichtungsvorrichtung (161) des Haubenelements (158) und die Abdichtungsvorrichtung (237) des Abdeckelements (234) einen zumindest näherungsweise den zylindrischen Haubenraum (160) vollständig ringförmig umgebenden Abdichtring (165) bilden.
32. 32. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 31, dadurch gekennzeichnet, dass die Haubenvorrichtung (156) einen oder mehrere Anlageabschnitte (226) aufweist, deren Oberflächen (228) eine Anlagefläche (230) zum seitlichen Anlegen des Werkzeugkopfs (108) bilden, wobei die Anlagefläche (230) zumindest näherungsweise in der Ebene (216) verläuft, welche die zylindersegmentförmige Ausnehmung (214) begrenzt.
33. 33. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 32, dadurch gekennzeichnet, dass das Haubenelement (158) einstückig mit mindestens einem Anlageabschnitt (226) der Haubenvorrichtung (156) ausgebildet ist.
34. 34. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 33, dadurch gekennzeichnet, dass eine Motorwellendrehachse (203) des Antriebsmotors (104) quer, insbesondere schräg, zu einer Längsachse (194) des rohrförmigen Stabs (110) ausgerichtet ist.
35. 35. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 34, dadurch gekennzeichnet, dass die Längsachse (194) des rohrförmigen Stabs (110) eine Längsachse (286), eine Symmetrieachse (198) und/oder eine Mittelachse (196) eines zentralen Abschnitts (288) des rohrförmigen Stabs (110) zwischen dem Antriebsmotor (104) und dem Werkzeugkopf (108) ist.
36. 36. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 35, dadurch gekennzeichnet, dass die Längsachse (194) des rohrförmigen Stabs (110) eine Längsachse (286), eine Symmetrieachse (198) und/oder eine Mittelachse (196) eines zentralen linearen Abschnitts (288) des rohrförmigen Stabs (110) zwischen dem Antriebsmotor (104) und dem Werkzeugkopf (108) ist.
37. 37. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 36, dadurch gekennzeichnet, dass die Längsachse (194) des rohrförmigen Stabs (110) eine Längsachse (194) eines Angriffsbereichs (208) des rohrförmigen Stabs (110) ist, an welchem ein Benutzer in einem Schleifbetrieb der Schleifmaschine (100) angreift.
38. 38. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 37, dadurch gekennzeichnet, dass ein Schwerpunkt (248) des Antriebsmotors (104) und ein Schwerpunkt (250) des Werkzeugkopfes (108) auf einander gegenüberliegenden Seiten (244; 246) der Längsachse (194) des rohrförmigen Stabs (110) liegen.
39. 39. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 38, dadurch gekennzeichnet, dass der rohrförmige Stab (110) ein oder mehrere Führungselemente (270) zur Führung der Übertragungswelle (130) umfasst.
40. 40. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 39, dadurch gekennzeichnet, dass die Übertragungswelle (130) zumindest abschnittsweise flexibel ausgebildet und zumindest abschnittsweise gebogen oder gekrümmt in dem rohrförmigen Stab (110) verläuft.
41. 41. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 40, dadurch gekennzeichnet, dass die Übertragungswelle (130) an dem proximalen Ende (114) des rohrförmigen Stabs (110) in einer quer zur Längsachse (194) des rohrförmigen Stabs (110) verlaufenden Richtung in den rohrförmigen Stab (110) hineingeführt ist.
42. 42. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 41, dadurch gekennzeichnet, dass die Übertragungswelle (130) an dem proximalen Ende (114) des rohrförmigen Stabs (110) im Wesentlichen parallel zu einer Symmetrieachse (282) des proximalen Endes (114) des rohrförmigen Stabs (110) in den rohrförmigen Stab (110) hineingeführt ist.
43. 43. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 42, dadurch gekennzeichnet, dass das proximale Ende (114) des rohrförmigen Stabs (110) und/oder das distale Ende (116) des rohrförmigen Stabs (110) mindestens eine Biegung (280) umfasst.
44. 44. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 43, dadurch gekennzeichnet, dass die Übertragungswelle (130) an dem distalen Ende (116) des rohrförmigen Stabs (110) in einer quer zur Längsachse (194) des rohrförmigen Stabs (110) verlaufenden Richtung aus dem rohrförmigen Stab (110) herausgeführt ist.
45. 45. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 44, dadurch gekennzeichnet, dass die Übertragungswelle (130) an dem distalen Ende (116) des rohrförmigen Stabs (110) im Wesentlichen parallel zu einer Symmetrieachse (198) des distalen Endes (116) des rohrförmigen Stabs (110) aus dem rohrförmigen Stab (110) herausgeführt ist.
46. 46. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 45, dadurch gekennzeichnet, dass die Motorwellendrehachse (202) und eine Drehachse (278) des dem Antriebsmotor (104) zugewandten Endes (276) der Übertragungswelle (130) versetzt zueinander angeordnet sind.
47. 47. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 46, dadurch gekennzeichnet, dass der Antriebsmotor (104) und die Übertragungswelle (130) mittels einer Versatzvorrichtung (240) miteinander verbunden sind, mittels welcher eine Drehbewegung einer Motorwelle (212) des Antriebsmotors (104) auf ein versetzt zu der Motorwelle (212) angeordnetes, dem Antriebsmotor (104) zugewandtes Ende (276) der Übertragungswelle (130) übertragbar ist.
48. 48. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 47, dadurch gekennzeichnet, dass der rohrförmige Stab (110) eine von Öffnungen (283) an den Enden (114; 116) des rohrförmigen Stabs (110) verschiedene Durchtrittsöffnung (284) umfasst, durch welche die Übertragungswelle (130) in einen Innenraum (262) des rohrförmigen Stabs (110) hineingeführt oder aus dem Innenraum (262) des rohrförmigen Stabs (110) herausgeführt ist.
49. 49. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 48, dadurch gekennzeichnet, dass der rohrförmige Stab (110) eine von Öffnungen (283) an den Enden des rohrförmigen Stabs (110) verschiedene Durchtrittsöffnung (284) umfasst, mittels welcher ein als Absaugkanalabschnitt (176) eines Absaugkanals (172) einer Absaugvorrichtung (170) dienender Innenraum (262) des rohrförmigen Stabs (110) mit mindestens einem weiteren Absaugkanalabschnitt (176) des Absaugkanals (172) der Absaugvorrichtung (170) fluidwirksam verbunden ist.
50. 50. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 49, dadurch gekennzeichnet, dass der rohrförmige Stab (110) einen Angriffsbereich (208) umfasst, an welchem ein Benutzer in einem Schleifbetrieb der Schleifmaschine (100) angreift.
51. 51. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 50, dadurch gekennzeichnet, dass eine Motorwellendrehachse (202) des Antriebsmotors (104) im Wesentlichen parallel zu der Längsachse (194) des rohrförmigen Stabs (110) ausgerichtet ist.
52. 52. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 51, dadurch gekennzeichnet, dass eine Motorwelle (212) des Antriebsmotors (104) und ein dem Antriebsmotor (104) zugewandtes Ende (276) der Übertragungswelle (130) bezüglich einer senkrecht zur Längsachse (194) des rohrförmigen Stabs (110) verlaufenden Richtung und/oder bezüglich einer parallel zur Längsachse (194) des rohrförmigen Stabs (110) verlaufenden Richtung versetzt zueinander angeordnet sind.
53. 53. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 52, dadurch gekennzeichnet, dass eine Motorwellendrehachse (202), eine Drehachse (278) eines dem Antriebsmotor (104) zugewandten Endes (276) der Übertragungswelle (130) und/oder eine Drehachse eines im Angriffsbereich (208) des rohrförmigen Stabs (110) verlaufenden Abschnitts der Übertragungswelle (130) zumindest näherungsweise parallel zueinander verlaufen.
54. 54. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 53, dadurch gekennzeichnet, dass eine Motorwellendrehachse (202), eine Drehachse (278) eines dem Antriebsmotor (104) zugewandten Endes (144) der Übertragungswelle (130) und/oder eine Drehachse eines im Angriffsbereich (208) des rohrförmigen Stabs (110) verlaufenden Abschnitts der Übertragungswelle (130) bezüglich einer senkrecht zur Längsachse (194) des rohrförmigen Stabs (110) verlaufenden Richtung versetzt zueinander angeordnet sind.
55. 55. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 54, dadurch gekennzeichnet, dass eine Versatzvorrichtung (240) eine Zahnradvorrichtung (256) zur Übertragung der Drehbewegung umfasst.
56. 56. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 55, dadurch gekennzeichnet, dass eine Versatzvorrichtung (240) eine Zahnriemenvorrichtung (254) zur Übertragung der Drehbewegung umfasst.
57. 57. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 56, dadurch gekennzeichnet, dass eine Motorwelle (212) des Antriebsmotors (104) und ein dem Antriebsmotor (104) zugewandtes Ende (276) der Übertragungswelle (130) zumindest näherungsweise koaxial zueinander angeordnet sind.
58. 58. Handgehaltene Schleifmaschine (100) nach einer der Ausführungsformen 1 bis 57, dadurch gekennzeichnet, dass eine Motorwelle (212) des Antriebsmotors (104) und ein im Angriffsbereich (208) des rohrförmigen Stabs (110) verlaufender Abschnitt der Übertragungswelle (130) bezüglich einer senkrecht zur Längsachse (194) des rohrförmigen Stabs (110) verlaufenden Richtung versetzt zueinander angeordnet sind.
59. 59. Handgehaltene Schleifmaschine (100) nach Ausführungsform 58, dadurch gekennzeichnet, dass die Motorwelle (212) des Antriebsmotors (104) und der im Angriffsbereich (208) des rohrförmigen Stabs (110) verlaufende Abschnitt der Übertragungswelle (130) mittels eines flexiblen Abschnitts der Übertragungswelle (130) miteinander verbunden sind.

Preferred embodiments are the following:

1. A hand-held grinding machine (100) comprising a holding device (102) for holding the grinding machine (100), a drive motor (104) and a tool head (108),
   wherein the retainer (102) comprises a substantially tubular rod (110) comprising a proximal end (114) and a distal end (116).
   wherein the drive motor (104) is disposed at the proximal end (114),
   wherein the tool head (108) is located at the distal end (116),
   wherein the grinding machine (100) comprises a transmission shaft (130) which connects the drive motor (104) for torque transmission with a tool holder (132) of the tool head (108) and at least sections within the tubular rod (110) extends.
2. 2. Hand-held grinding machine (100) according to embodiment 1, characterized in that the grinding machine (100) comprises a suction device (170) which comprises a suction channel (172) having a substantially annular or ring-shaped suction channel section (176a),
   wherein the substantially annular or annular portion-shaped suction channel section (176a) at least partially surrounds a coupling device (138) for coupling the transmission shaft (130) to the tool holder (132).
3. 3. hand-held grinding machine (100) according to embodiment 2, characterized in that the substantially annular or annular portion-shaped suction channel (176a) at least approximately concentrically surrounds a transmission (140) for coupling the transmission shaft (130) with the tool holder (132).
4. 4. Hand-held grinding machine (100) according to one of embodiments 1 to 3, characterized in that the tool holder (132) and one of the tool holder (132) facing the end (144) of the transmission shaft (130) by means of a planetary gear (142) are interconnected ,
5. 5. Hand-held grinding machine (100) according to one of embodiments 1 to 4, characterized in that a substantially annular or annular portion-shaped suction channel section (176a) of a suction channel (172) of a suction device (170), the tool holder (132), a tool holder ( 132) facing the end of the transmission shaft (130) and / or a hood device (156) for covering the tool holder (132) are arranged substantially coaxially to one another.
6. 6. Hand-held grinding machine (100) according to one of embodiments 1 to 5, characterized in that the transmission shaft (130) is at least partially flexible.
7. 7. hand-held grinding machine (100) according to one of the embodiments 1 to 6, characterized in that the tool head (108) about one or more pivot axes (120) is pivotally connected to the holding device (102).
8. 8. hand-held grinding machine (100) according to embodiment 7, characterized in that one of the tool holder (132) facing the end (144) of the transmission shaft (130) together with the tool head (108) about one or more pivot axes (120) is pivotable.
9. 9. Hand-held grinding machine (100) according to one of embodiments 1 to 8, characterized in that the hand-held grinding machine (100) comprises two or more gear (140) for coupling the drive motor (104) with the tool holder (132), wherein both an end (276) of the transmission shaft (130) facing the drive motor (104) and at least one transmission (140) each being arranged on an end (144) of the transmission shaft (130) facing the tool holder (132).
10. 10. Hand-held grinding machine (100) according to one of embodiments 1 to 9, characterized in that the suction channel (172) of the suction device (170) of the hand-held grinding machine (100) and the transmission shaft (130) at least partially together in a tubular element (112). of the hand-held grinder (100).
11. 11. Hand-held grinding machine (100) according to one of embodiments 1 to 10, characterized in that the substantially annular or annular portion-shaped suction channel (176a) is fixedly connected to the coupling device (138) by means of which the tool holder (132) and one of the tool holder (132) facing end (144) of the transmission shaft (130) are interconnected.
12. 12. Hand-held grinding machine (100) according to one of embodiments 1 to 11, characterized in that the substantially annular or annular portion-shaped suction channel (176a) at least partially by a housing (136) of the coupling device (138) for coupling the transmission shaft (130) the tool holder (132) is formed.
13. 13. Hand-held grinding machine (100) according to embodiment 12, characterized in that the housing (136) by means of at least one pivot element (122) is pivotally connected to the holding device (102).
14. 14. Hand-held grinding machine (100) according to any one of embodiments 1 to 13, characterized in that the substantially annular or annular portion Absaugkanalabschnitt (176a) of the suction channel (172) and within a tubular rod (110) of the holding device (102) extending Absaugkanalabschnitt (176c) of the suction channel (172) by means of a flexible suction channel portion (176b) of the suction channel (172) are fluidly interconnected.
15. 15. Hand-held grinding machine (100) according to embodiment 14, characterized in that the transmission shaft (130) extends at least in sections within the flexible suction duct section (176b) comprising and / or forming flexible tubular element (180).
16. 16. Hand-held grinding machine (100) according to any one of embodiments 1 to 15, characterized in that the tool holder (132) by means of a coupling device (138) selectively with the transmission shaft (130) can be coupled or from the transmission shaft (130) is removable.
17. 17. Hand-held grinding machine (100) according to one of embodiments 1 to 16, characterized in that the tool head (108) comprises a hood device (156) for covering the tool holder (132),
    wherein the hood device (156) comprises a hood element (158) comprising a substantially cylindrical hood space (160),
    wherein the tool holder (132) together with a tool (106) arranged thereon can be arranged at least in sections in the hood space (160).
18. 18. Hand-held grinding machine (100) according to one of embodiments 1 to 17, characterized in that the hood element (158) comprises a cylinder-segment-shaped recess (214), so that a tangent (220) which at an edge (218) of the in Tool holder (132) arranged tool (106) is present, substantially in a cylinder segment-shaped recess (214) delimiting plane (216) extends.
19. 19. Hand-held grinding machine (100) according to one of embodiments 1 to 18, characterized in that the tool holder (132), the transmission shaft (130) and the hood element (158) are rotatably mounted on a central element (134) of the tool head (108) ,
20. 20. Hand-held grinding machine (100) according to embodiment 19, characterized in that the tool holder (132), one of the tool holder (132) facing the end (144) of the transmission shaft (130) and the hood element (158) are arranged rotatably about at least approximately mutually parallel axes of rotation (154) on the central element (134) of the tool head (108).
21. 21. Hand-held grinding machine (100) according to one of embodiments 19 or 20, characterized in that the tool holder (132), one of the tool holder (132) facing the end (144) of the transmission shaft (130) and the hood member (158) about a common Rotary axis (154) are rotatably mounted on the central element (134) of the tool head (108).
22. 22. Hand-held grinding machine (100) according to one of embodiments 1 to 21, characterized in that a central element (134) of the tool head (108) about one or more pivot axes (120) is pivotally connected to the holding device (102).
23. 23. Hand-held grinding machine (100) according to one of embodiments 1 to 22, characterized in that a central element (134) of the tool head (108) has a housing (136) for a coupling device (138) for coupling the transmission shaft (130) with the tool holder (132).
24. 24. Hand-held grinding machine (100) according to one of embodiments 1 to 23, characterized in that the hood device (156) comprises a braking device (222) by means of which an undesired rotational movement of the hood element (158) can be braked.
25. 25. Hand-held grinding machine (100) according to one of embodiments 1 to 24, characterized in that the hood device (156) comprises a cover (234), by means of which the cylinder-segment-shaped recess (214) in the hood element (158) can be covered.
26. 26. Hand-held grinding machine (100) according to embodiment 25, characterized in that the cover (234) in a covering position, in which the cylinder-segment-shaped recess (214) is covered, and in an open position, in which the hood space (160) through the recess (214) is accessible, can be brought.
27. 27. Hand-held grinding machine (100) according to any one of embodiments 25 or 26, characterized in that the cover (234) rotatable, pivotable, hinged and / or releasably on the hood member (158) is arranged.
28. 28. Hand-held grinding machine (100) according to any one of embodiments 25 to 27, characterized in that the cover (234) about an at least approximately perpendicular to the rotation axis (154) of the tool holder (132) aligned pivot axis (236) is rotatable or pivotable.
29. 29. Hand-held grinding machine (100) according to any one of embodiments 25 to 28, characterized in that the cover (234) about an at least approximately parallel to the rotation axis (154) of the tool holder (132) aligned rotation axis (154) is rotatable or pivotable.
30. 30. Hand-held grinding machine (100) according to one of embodiments 25 to 29, characterized in that the hood element (158) comprises a sealing device (161), which along the circumference of the cylindrical hood space (160) at least approximately from one side (232a; 232b) of the cylinder-segment-shaped recess (214) extends up to the side (232a; 232b) opposite this side (232a; 232b) of the cylinder-segment-shaped recess (214).
31. 31. Hand-held grinding machine (100) according to embodiment 30, characterized in that the cover element (234) comprises a sealing device (237) which is arranged on the cover element (234) such that in a covering position of the cover element (234) the sealing device (23) 161) of the hood element (158) and the sealing device (237) of the cover element (234) form a sealing ring (165) which surrounds at least approximately the cylindrical hood space (160) in a completely annular manner.
32. 32. Hand-held grinding machine (100) according to one of embodiments 1 to 31, characterized in that the hood device (156) has one or more contact sections (226) whose surfaces (228) have a contact surface (230) for laterally applying the tool head (108 ), wherein the contact surface (230) extends at least approximately in the plane (216) which delimits the cylinder-segment-shaped recess (214).
33. 33. Hand-held grinding machine (100) according to one of embodiments 1 to 32, characterized in that the hood element (158) is formed integrally with at least one contact portion (226) of the hood device (156).
34. 34. Hand-held grinding machine (100) according to one of embodiments 1 to 33, characterized in that a motor shaft rotation axis (203) of the drive motor (104) transversely, in particular obliquely, to a longitudinal axis (194) of the tubular rod (110) is aligned.
35. 35. Hand-held grinding machine (100) according to one of embodiments 1 to 34, characterized in that the longitudinal axis (194) of the tubular rod (110) has a longitudinal axis (286), an axis of symmetry (198) and / or a central axis (196) of a central portion (288) of the tubular rod (110) between the drive motor (104) and the tool head (108).
36. 36. Hand-held grinding machine (100) according to one of embodiments 1 to 35, characterized in that the longitudinal axis (194) of the tubular rod (110) has a longitudinal axis (286), an axis of symmetry (198) and / or a central axis (196) of a central linear portion (288) of the tubular rod (110) between the drive motor (104) and the tool head (108).
37. 37. A handheld grinding machine (100) according to any one of embodiments 1 to 36, characterized in that the longitudinal axis (194) of the tubular rod (110) is a longitudinal axis (194) of an engaging portion (208) of the tubular rod (110) on which a user in a grinding operation of the grinding machine (100) attacks.
38. 38. Hand-held grinding machine (100) according to one of embodiments 1 to 37, characterized in that a center of gravity (248) of the drive motor (104) and a center of gravity (250) of the tool head (108) on opposite sides (244; Longitudinal axis (194) of the tubular rod (110) lie.
39. 39. Hand-held grinding machine (100) according to one of embodiments 1 to 38, characterized in that the tubular rod (110) comprises one or more guide elements (270) for guiding the transmission shaft (130).
40. 40. Hand-held grinding machine (100) according to one of embodiments 1 to 39, characterized in that the transmission shaft (130) formed at least partially flexible and at least partially curved or curved in the tubular rod (110).
41. 41. Hand-held grinding machine (100) according to one of the embodiments 1 to 40, characterized in that the transmission shaft (130) at the proximal end (114) of the tubular rod (110) is guided into the tubular rod (110) in a direction transverse to the longitudinal axis (194) of the tubular rod (110).
42. 42. Hand-held grinding machine (100) according to one of embodiments 1 to 41, characterized in that the transmission shaft (130) at the proximal end (114) of the tubular rod (110) substantially parallel to a symmetry axis (282) of the proximal end ( 114) of the tubular rod (110) is guided into the tubular rod (110).
43. 43. Hand-held grinding machine (100) according to one of embodiments 1 to 42, characterized in that the proximal end (114) of the tubular rod (110) and / or the distal end (116) of the tubular rod (110) at least one bend ( 280).
44. 44. Hand-held grinding machine (100) according to one of embodiments 1 to 43, characterized in that the transmission shaft (130) at the distal end (116) of the tubular rod (110) in a transversely to the longitudinal axis (194) of the tubular rod (110 ) extending direction out of the tubular rod (110) is led out.
45. 45. The hand-held grinding machine (100) according to any one of embodiments 1 to 44, characterized in that the transmission shaft (130) at the distal end (116) of the tubular rod (110) substantially parallel to a symmetry axis (198) of the distal end ( 116) of the tubular rod (110) is led out of the tubular rod (110).
46. 46. Hand-held grinding machine (100) according to one of embodiments 1 to 45, characterized in that the motor shaft rotation axis (202) and a rotation axis (278) of the drive motor (104) facing End (276) of the transmission shaft (130) offset from one another.
47. 47. Hand-held grinding machine (100) according to one of embodiments 1 to 46, characterized in that the drive motor (104) and the transmission shaft (130) by means of an offset device (240) are interconnected, by means of which a rotational movement of a motor shaft (212) of the Drive motor (104) on a staggered to the motor shaft (212) arranged, the drive motor (104) facing the end (276) of the transmission shaft (130) is transferable.
48. 48. Hand-held grinding machine (100) according to one of embodiments 1 to 47, characterized in that the tubular rod (110) has a through opening (284) different from openings (283) at the ends (114; 116) of the tubular rod (110). by which the transmission shaft (130) is guided into an inner space (262) of the tubular rod (110) or led out of the inner space (262) of the tubular rod (110).
49. 49. Hand-held grinding machine (100) according to one of embodiments 1 to 48, characterized in that the tubular rod (110) comprises one of openings (283) at the ends of the tubular rod (110) different passage opening (284), by means of which serving as Absaugkanalabschnitt (176) of a suction channel (172) of a suction device (170) serving interior (262) of the tubular rod (110) with at least one further Absaugkanalabschnitt (176) of the suction channel (172) of the suction device (170) fluidly connected.
50. 50. Hand-held grinding machine (100) according to one of embodiments 1 to 49, characterized in that the tubular rod (110) comprises an engagement region (208), which engages a user in a grinding operation of the grinding machine (100).
51. 51. Hand-held grinding machine (100) according to one of embodiments 1 to 50, characterized in that a motor shaft rotation axis (202) of the drive motor (104) is aligned substantially parallel to the longitudinal axis (194) of the tubular rod (110).
52. 52. Hand-held grinding machine (100) according to one of embodiments 1 to 51, characterized in that a motor shaft (212) of the drive motor (104) and a drive motor (104) facing the end (276) of the transmission shaft (130) with respect to a perpendicular to Longitudinal axis (194) of the tubular rod (110) extending direction and / or with respect to a direction parallel to the longitudinal axis (194) of the tubular rod (110) extending direction offset from each other.
53. 53. Hand-held grinding machine (100) according to one of embodiments 1 to 52, characterized in that a motor shaft rotation axis (202), a rotation axis (278) of the drive motor (104) facing the end (276) of the transmission shaft (130) and / or a Rotary axis of the attack area (208) of the tubular rod (110) extending portion of the transmission shaft (130) at least approximately parallel to each other.
54. 54. Hand-held grinding machine (100) according to one of embodiments 1 to 53, characterized in that a motor shaft rotation axis (202), a rotation axis (278) of the drive motor (104) facing the end (144) of the transmission shaft (130) and / or a Rotary axis of a in the attack region (208) of the tubular rod (110) extending portion of the transmission shaft (130) with respect to a direction perpendicular to the longitudinal axis (194) of the tubular rod (110) extending direction offset from each other.
55. 55. Hand-held grinding machine (100) according to one of the embodiments 1 to 54, characterized in that an offset device (240) a gear device (256) for transmitting the rotational movement comprises.
56. 56. Hand-held grinding machine (100) according to one of embodiments 1 to 55, characterized in that an offset device (240) comprises a toothed belt device (254) for transmitting the rotational movement.
57. 57. Hand-held grinding machine (100) according to one of embodiments 1 to 56, characterized in that a motor shaft (212) of the drive motor (104) and the drive motor (104) facing the end (276) of the transmission shaft (130) at least approximately coaxial with each other are arranged.
58. 58. Hand-held grinding machine (100) according to one of embodiments 1 to 57, characterized in that a motor shaft (212) of the drive motor (104) and in the engagement region (208) of the tubular rod (110) extending portion of the transmission shaft (130) with respect a direction perpendicular to the longitudinal axis (194) of the tubular rod (110) extending direction are arranged offset from one another.
59. 59. Hand-held grinding machine (100) according to embodiment 58, characterized in that the motor shaft (212) of the drive motor (104) and in the engagement region (208) of the tubular rod (110) extending portion of the transmission shaft (130) by means of a flexible portion of Transmission shaft (130) are interconnected.

LIST OF REFERENCE NUMBERS

100

grinding machine

102

holder

104

drive motor

106

Tool

108

tool head

110

tubular rod

112

tube element

114

proximal end

116

distal end

118

swivel device

120

swivel axis

120a

first pivot axis

120b

second pivot axis

122

pivoting element

124

pivoting fork

126

swivel

128

fastener

129

Mounting Arm

130

transmission shaft

130a

first part of the transmission wave

130b

second part of the transmission wave

132

tool holder

134

central element

136

casing

138

coupling device

140

transmission

142

planetary gear

143

central wheel (sun wheel)

144

the tool holder 132 facing the end of the transmission shaft 130th

145

outer wheel (ring gear)

146

drive shaft

147

bull wheel

148

Tool holder shaft

149

Umlaufradträger

150

detachable connection device

152

output shaft

154

axis of rotation

156

hood device

158

hood element

160

hood space

161

sealing device

162

brush device

164

circumferentially

165

sealing ring

166

brush ring

168

axis of symmetry

170

suction

172

suction

174

connection device

176

Absaugkanalabschnitt

176a

annular or annular section-shaped suction channel section

176b

flexible suction duct section

176c

tubular suction channel section

178

Transition section

180

flexible pipe element

182

diversion

184

Telescoping device

186

outer part

188

inner part

190

pull-out

192

Transmission shaft axis of rotation

194

Longitudinal axis of the tubular rod 110th

196

Central axis of the tubular rod 110th

198

Symmetry axis of the tubular rod 110

200

the drive motor 104 facing the end of the tubular rod 110th

202

Motor shaft axis of rotation

203

Motor shaft axis of rotation

204

locking device

206

handle element

208

attack range

210

casing

212

motor shaft

214

recess

216

level

218

edge

220

tangent

222

braking device

224

contact element

226

contact section

228

surface

230

contact surface

232a

page

232b

page

234

cover

236

swivel axis

237

sealing device

238

brush device

240

offset device

242

longitudinal plane

244

engine

246

tool side

248

Center of gravity of the drive motor 104

250

Center of gravity of the tool head 108

252

Center of gravity of the grinding machine 100

254

toothed device

256

gear device

260

The End

262

inner space

264

partition wall

266

Interior part

268

Interior part

270

guide element

272

guide channel

274

groove

276

the drive motor 104 facing the end of the transmission shaft 130th

278

axis of rotation

280

bend

282

axis of symmetry

283

opening

284

Through opening

285

sidewall

286

longitudinal axis

288

central section

Claims (15)

A hand-held grinding machine (100) comprising a holding device (102) for holding the grinding machine (100), a drive motor (104) and a tool head (108),
wherein the retainer (102) comprises a substantially tubular rod (110) comprising a proximal end (114) and a distal end (116).
wherein the drive motor (104) is disposed at the proximal end (114),
wherein the tool head (108) is located at the distal end (116),
wherein the grinding machine (100) comprises a transmission shaft (130) which connects the drive motor (104) for torque transmission with a tool holder (132) of the tool head (108) and extends at least in sections within the tubular rod (110),
wherein the tool head (108) comprises a hood device (156) for covering the tool receptacle (132),
wherein the hood device (156) comprises a hood element (158) rotatably mounted on a central element (134) of the tool head (108) and comprising a substantially cylindrical hood space (160),
wherein the tool holder (132) together with a tool (106) arranged thereon can be arranged at least in sections in the hood space (160), wherein the hood element (158) comprises a cylinder-segment-shaped recess (214), so that a tangent (220) which adjoins abutting an edge (218) of the tool (106) arranged in the tool holder (132), extending substantially in a plane (216) delimiting the cylinder-segment-shaped recess (214),
wherein the hood device (156) comprises a braking device (222), by means of which an undesired rotational movement of the hood element (158) can be braked. Hand-held grinding machine (100) according to claim 1, characterized in that the braking device (222) comprises a spring device, a friction device or a locking device. Hand-held grinding machine (100) according to one of claims 1 or 2, characterized in that the hood device (156) comprises a cover (234), by means of which the cylinder-segment-shaped recess (214) in the hood element (158) can be covered. Hand-held grinding machine (100) according to claim 3, characterized in that the cover (234) in a cover position in which the cylinder-segment-shaped recess (214) is covered, and in an open position in which the hood space (160) through the recess (214 ) is accessible, can be brought. Hand-held grinding machine (100) according to one of claims 3 or 4, characterized in that the cover element (234) is rotatably arranged on the hood element (158). Hand-held grinding machine (100) according to one of claims 3 to 5, characterized in that the cover (234) about an at least approximately parallel to the rotation axis (154) of the tool holder (132) aligned rotation axis (154) is rotatable or pivotable. Hand-held grinding machine (100) according to one of claims 1 to 6, characterized in that the hood element (158) comprises a sealing device (161), which along the circumference of the cylindrical hood space (160) at least approximately from one Extending side (232a, 232b) of the cylinder-segment-shaped recess (214) to the said (232a; 232b) opposite side (232a, 232b) of the cylinder-segment-shaped recess (214). Hand-held grinding machine (100) according to one of claims 1 to 7, characterized in that the hood device (156) one or more bearing portions (226), the surfaces (228) form a contact surface (230) for lateral application of the tool head (108) wherein the abutment surface (230) preferably extends at least approximately in the plane (216) which bounds the cylinder-segment-shaped recess (214). Hand-held grinding machine (100) according to any one of claims 1 to 8, characterized in that the hood device (156) comprises one or more separate abutment elements (224) connected to the hood element (158), which comprises one or more abutment sections (226) of the hood device (156) form. A hand-held grinding machine (100) according to any one of claims 1 to 9, characterized in that the grinding machine (100) comprises a suction device (170) comprising a suction channel (172) having a substantially annular or ring-shaped suction channel section (176a). Hand-held grinding machine (100) according to claim 10, characterized in that the substantially annular or annular portion-shaped suction channel section (176a) is a suction channel section (176a) arranged downstream of the tool holder (132) with respect to a suction direction of the suction device (170). Hand-held grinding machine (100) according to one of claims 1 to 11, characterized in that a substantially annular or annular portion-shaped suction channel section (176a) of a suction channel (172) a suction device (170), the tool holder (132), one of the tool holder (132) facing the end (144) of the transmission shaft (130) and / or the hood device (156) for covering the tool holder (132) substantially coaxially to each other are arranged. Hand-held grinding machine (100) according to one of claims 10 to 12, characterized in that the suction channel (172) of the suction device (170) of the hand-held grinding machine (100) and the transmission shaft (130) at least partially together in a tubular element (112) of the hand-held Grinding machine (100) run. Hand-held grinding machine (100) according to one of claims 1 to 13, characterized in that the tool holder (132), the transmission shaft (130) and the hood member (158) are rotatably mounted on the central element (134) of the tool head (108) the central element (134) is in particular pivotally connected to the holding device (102) about one or more pivot axes (120). Hand-held grinding machine (100) according to one of claims 1 or 14, characterized in that the tool holder (132), one of the tool holder (132) facing the end (144) of the transmission shaft (130) and the hood member (158) about a common axis of rotation ( 154) are rotatably mounted on the central element (134) of the tool head (108).

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