EP3246128B1 - Hand-held machine tool device for mobile positioning of a shaft in a guiding rail - Google Patents

Description

State of the art

The invention relates to a handheld power tool device for at least one movable mounting of a shaft, in particular a drive spindle, of a handheld power tool in at least one guideway of a protective device that can be arranged on the handheld power tool according to the preamble of claim 1.

In EP 2 363 242 B1 A handheld power tool device has already been proposed for at least one movable mounting of a shaft, in particular a drive spindle, of a handheld power tool in at least one guideway of a protective device that can be arranged on the handheld power tool.

Furthermore is off DE 10 2005 021 212 A1 a handheld power tool device according to the preamble of claim 1 is already known.

The object of the invention is in particular to provide a generic device with a long service life. The object is achieved by the features of claim 1, while advantageous refinements and developments of the invention can be found in the subclaims.

Advantages of the invention

The invention is based on a handheld power tool device at least for a movable mounting of a shaft, in particular a drive spindle, of a handheld power tool in at least one guideway on one Tool receiving area of the protective device of the hand-held power tool, which can be arranged, with at least the protective device , with at least one movement unit, in particular arranged on the protective device, which is provided for movably supporting the shaft at least along the guideway relative to the protective device, and with at least one different from one Linear and / or roller bearing unit of the movement unit, which is arranged, in particular at least partially at least substantially non-rotatably, on the movement unit and / or on the protective device and is provided for this purpose, at least during a movement of the shaft along the guideway, a minimum distance of the shaft Comply with at least one guiding contour of the guideway.

It is proposed that the spacer unit have at least one spacer element, which is arranged, in particular at least essentially non-rotatably, on a movably mounted guide slide element of the movement unit. The guideway preferably has at least two guiding sections which run transversely to one another. The guideway preferably has an L-shaped or a Y-shaped configuration. Depending on an application requirement, the shaft is preferably movable relative to the protective device along a straight guideway section of the guideway or along a further guideway section of the guideway that is at least partially angled to the straight guideway section, in particular in addition to a rotational movement about an axis of rotation of the shaft.

The guideway is advantageously arranged on a side of the protective device facing the tool receiving area of the hand-held power tool, in particular a protective cover of the protective device, in particular when viewed in a state of the protective device arranged on the tool receiving area. However, it is also conceivable that the guideway has another configuration and / or arrangement that appears to be useful to a person skilled in the art. A “tool holding area of the hand tool” is to be understood here in particular to mean an area of the hand tool in which an output element, in particular the shaft, consists of one

Housing of the handheld machine tool extends out. The tool receiving area is preferably arranged on a gear housing of the hand power tool. The protective device is preferably attached to the gear housing via the movement unit. The protective device is preferably movably mounted by means of the movement unit relative to a housing unit, in particular at least relative to the gear housing, of the hand power tool. With regard to an embodiment of the protective device, the EP 2 363 242 B1 to get expelled.

The movement unit is preferably provided to mount the shaft in a translational and / or rotary manner, at least along the guideway, relative to the protective device. The term "movably mounted" is intended in particular to define a mounting of a unit and / or an element, the unit and / or the element, in particular decoupled from an elastic deformation of the unit and / or the element, being able to move along at least a distance greater than 10 mm, preferably greater than 25 mm and particularly preferably greater than 50 mm and / or has a possibility of movement about at least one axis through an angle greater than 10 °, preferably greater than 30 ° and particularly preferably greater than 60 °. The movement unit is preferably designed as a guide carriage. However, it is also conceivable for the movement unit to have a different configuration that appears appropriate to a person skilled in the art. The movement unit is preferably movably, in particular translationally and / or pivotably, mounted on the protective device. The movement unit is preferably arranged on a side of the protective device on the protective device facing away from a tool receiving space of the protective device.

The spacer unit is preferably provided for the purpose of direct contact and / or collision of the shaft with the guide track, in particular the guide contour, during a movement of the shaft along the guide track to avoid. The distance unit is preferably configured differently from a stop, in particular an adjustable stop, of the movement unit, which is particularly intended to limit a movement distance of the movement unit, in particular at least the guide slide element, relative to the protective device. The spacing unit is preferably provided to ensure a minimum distance of the shaft relative to at least one guide contour of the guide track, at least during a movement of the shaft along the guide track. “Provided” is to be understood in particular to be specially designed and / or specially equipped. The fact that an object is provided for a specific function should in particular be understood to mean that the object fulfills and / or executes this specific function in at least one application and / or operating state. “At least essentially non-rotatably” is to be understood in particular to mean an arrangement and / or a connection of at least two elements and / or units, with a rotational movement of the elements and / or of the units, in particular in at least one direction of rotation, relative to one another, in particular with the exception of an elastic or plastic deformation of the elements and / or the units and / or a slight play between the elements and / or the units is largely prevented, in particular in an assembled state of the elements and / or the units.

The distance unit is designed differently from a bearing receiving unit and / or differently from a rolling bearing unit. The spacer unit has at least one spacer element which is designed differently from a bearing receiving element, in particular a bearing receiving sleeve, and / or differently from a bearing element, in particular a rolling bearing. The spacer element is preferably formed from bronze, from brass, from steel, from plastic or another material that appears useful to a person skilled in the art. The spacer element can be designed as a sleeve, as a bolt, as a backdrop or the like. The shaft can particularly preferably be driven in rotation relative to the distance unit. The distance unit is preferably designed in this way and / or arranged in such a way that a rotational movement of the spacer unit, in particular at least the spacer element, is prevented together with the shaft about the axis of rotation of the shaft. The shaft preferably extends at least partially through the spacer unit, in particular the spacer element, in particular viewed along the axis of rotation of the shaft.

Preferably, the at least one spacer element is arranged at least essentially non-rotatably on the guide carriage element by means of a non-positive and / or positive connection. The at least one spacer element, together with the guide slide element, is preferably mounted to be movable, in particular translatory and / or pivotable, relative to the protective device. The at least one spacer element can be designed as a sleeve which has at least one extension to an at least substantially rotationally fixed arrangement of the at least one spacer element on the guide slide element. The spacer element can be designed as a sleeve, which is formed in one piece with a locking ring or locking plate for an at least substantially rotationally fixed arrangement of the at least one spacer element on the guide slide element. The spacer element can be designed as a bolt, which is arranged at least essentially in a rotationally fixed manner on the guide slide element, or as another element that appears sensible to a person skilled in the art. Furthermore, however, it is also conceivable that the distance unit additionally or alternatively comprises at least one further element which is arranged at least essentially in a rotationally fixed or movable manner on the movement unit and / or on the protective device. It is conceivable, for example, that the spacer unit has at least one additional spacer element which is rotatably mounted on the spacer element which is arranged at least substantially non-rotatably on the movement unit. It is also conceivable, for example, that the spacer element is at least substantially decoupled from a rotational movement of the shaft and can be driven in rotation, for example as a result of a movement of the guide carriage element, and rolls on the guide contour during a movement of the guide carriage element or by means of one on the guide contour arranged toothing, which interacts with an external toothing of the spacer element, can be driven as a result of a movement of the guide slide element.

By means of the configuration according to the invention, a movement of the spacer element together with the shaft about the axis of rotation of the shaft can advantageously be avoided in order to ensure the lowest possible relative speed between the spacer element and the guideway. Avoiding a collision and / or direct contact between the shaft and the guide contour can advantageously be achieved in a structurally simple manner. Wear on the shaft and / or the guideway can advantageously be kept low. A long service life of the handheld power tool device can advantageously be made possible. Advantageously, as a result of an at least substantially rotationally fixed arrangement of the spacer unit, in particular at least the spacer element, a reliable and at the same time low-wear guidance of the shaft along the guideway can be achieved on the movement unit, in particular in comparison to an embodiment of the spacer element which rotates with the shaft. Reliable compliance with a minimum distance of the shaft relative to the guide contour can advantageously be achieved during a movement of the shaft along the guide path.

Furthermore, it is proposed that the movement unit have at least one bearing element for rotatably supporting the shaft, which is arranged outside a spacer element of the spacer unit. The bearing element is preferably designed as a roller bearing, in particular as a ball bearing. However, it is also conceivable that the bearing element has a different configuration which appears to be useful to a person skilled in the art, such as, for example, a configuration as a sliding bearing or the like. The bearing element is preferably arranged on the movement unit, in particular on a guide slide element of the movement unit. The spacer element is preferably arranged at a distance from the bearing element or is preferably at a transverse, in particular at least in Essentially perpendicular, to a side of the bearing element extending to a rotation axis of the bearing element on the bearing element. The expression “substantially perpendicular” is intended to define, in particular, an orientation of a direction relative to a reference direction, the direction and the reference direction, in particular viewed in one plane, enclose an angle of 90 ° and the angle has a maximum deviation of in particular less than 8 °, advantageously less than 5 ° and particularly advantageously less than 2 °. In an alternative embodiment of the hand-held power tool device, it is conceivable for the movement unit to be decoupled from the bearing element and for the shaft to be rotatably mounted together with the driven shaft as a result of a rotationally fixed connection to an output shaft of the hand-held power tool by means of a drive shaft bearing element of the hand-held power tool. By means of the configuration according to the invention, functions can advantageously be divided, an independent configuration of a storage function and a distance function being advantageously made possible. Protection of the bearing element can advantageously be achieved. Direct contact and / or collision of the bearing element with the guide track, in particular with the guide contour, during a movement of the shaft along the guide track can advantageously be avoided.

In addition, it is proposed that the distance unit has at least one sleeve-like spacer element, which is arranged on the movement unit, in particular at least essentially in a rotationally fixed manner. The shaft preferably extends through the sleeve-like spacer element in a direction at least substantially parallel to the axis of rotation of the shaft. “Essentially parallel” is to be understood here to mean in particular an orientation of a direction relative to a reference direction, in particular in a plane, the direction relative to the reference direction being a deviation in particular less than 8 °, advantageously less than 5 ° and particularly advantageously less than 2 °. By means of the configuration according to the invention, a structurally simple enclosure of the shaft can advantageously be achieved by the spacer element, in particular arranged at least essentially in a rotationally fixed manner, to advantageously avoid direct contact and / or a collision of the shaft with the guideway during movement of the shaft along the guideway ,

Furthermore, it is proposed that the spacer unit have at least one sleeve-like spacer element that has at least one rotation-proof extension. The anti-rotation extension preferably extends along a direction at least substantially perpendicular to a central axis of the sleeve-like spacer element, in particular along a radial direction of the sleeve-like spacer element. It is conceivable that the sleeve-like spacer element has a multiplicity of anti-rotation projections which are arranged distributed uniformly or unevenly on an outer circumference of the sleeve-shaped spacer element. By means of the configuration according to the invention, an at least substantially non-rotatable arrangement of the spacer element can be made structurally simple.

It is further proposed that the spacer unit has at least one spacer element which is formed in one piece with a securing element of the movement unit to secure a bearing element of the movement unit. The spacer element is preferably formed in one piece with a locking ring or with a locking plate of the movement unit, which is provided for securing, in particular for axially securing, a bearing element, in particular a ball bearing, of the movement unit. "One-piece" is to be understood to mean, in particular, at least cohesively connected, for example by means of a welding process, an adhesive process, a gating process and / or another process which seems sensible to the person skilled in the art, and / or advantageously in one piece, for example by a Manufactured in one piece and / or by one manufacture in a one- or multi-component injection molding process and advantageously from a single blank. By means of the configuration according to the invention, assembly effort and manufacturing costs can advantageously be saved. An additional component for securing the bearing element can advantageously be dispensed with.

In addition, it is proposed that the spacer unit has at least one spacer element which is formed in one piece with a securing element of the movement unit and which at least largely surrounds the shaft, in particular viewed along a circumferential direction of the shaft. The circumferential direction preferably runs in a plane extending at least substantially perpendicular to the axis of rotation of the shaft. However, it is also conceivable that the spacer element only partially surrounds the shaft, in particular viewed along a circumferential direction of the shaft, in particular at least in a potential contact area of the shaft, which could come into contact with the guide contour during a movement of the shaft along the guideway. It is also conceivable for the spacer element to be arranged only in a transition region between the guideway sections of the guideway in order to avoid direct contact between the shaft and the guiding contour. The spacer element is preferably formed in one piece with a locking ring or with a locking plate and preferably comprises a sleeve-like base body through which the shaft preferably projects in an assembled state. The base body is preferably provided for abutment and / or for a stop on the guide contour of the guide track during a movement of the shaft along the guide track. Reliable protection of the shaft can advantageously be achieved by means of the configuration according to the invention.

Furthermore, in particular in an alternative embodiment of the handheld power tool device, it is proposed that the distance unit be designed as a link unit. At least one link element of the link unit is preferably arranged on the movement unit, in particular at least essentially non-rotatably. At least one further link element is preferred Setting unit arranged on the protective device, in particular at least substantially non-rotatably. The link element arranged on the movement unit preferably interacts with the further link element arranged on the protective device. The link element is preferably designed in the form of a bolt or pin. The further backdrop element is preferably designed as a backdrop path, in particular as a backdrop path with two backdrop path sections running transversely to one another. The link element preferably engages at least partially in the further link element. However, it is also conceivable that the link element is designed as a slide track and the further link element is bolt or pin-shaped and at least partially engages in the link element. However, it is also conceivable that the link element and / or the further link element have / have a different configuration which appears to be useful to a person skilled in the art. The link element and the further link element preferably each form a spacer element of the spacer unit. By means of the configuration according to the invention, a reliable maintenance of a minimum distance of the shaft relative to the guide contour of the guide track can advantageously be made possible, in particular as a result of a forced guidance by the interaction of the pin-shaped or pin-shaped link element and the further link element designed as a link track.

It is further proposed that the distance unit has at least one sliding track, which is arranged on the protective device and is designed differently from the guideway. The slide track is preferably arranged laterally offset from the guide track on the protective device. The slide track preferably has two slide track sections running transversely to one another. The slide track sections preferably run at least substantially parallel to the guide sections of the guide track. The slide track preferably has an L-shaped or a Y-shaped course. By means of the configuration according to the invention, reliable and constructively simple maintenance of a minimum distance of the shaft relative to the guide contour can be achieved during a movement of the shaft along the guide path.

In addition, a hand tool, in particular a window and / or assembly cutter, is proposed with at least one hand tool device according to the invention. A "handheld power tool" is to be understood here in particular to mean a machine for machining workpieces, which can be transported by an operator without a transport machine. The handheld power tool in particular has a mass which is less than 40 kg, preferably less than 10 kg and particularly preferably less than 5 kg. A long service life of the handheld power tool can advantageously be made possible by means of the configuration according to the invention.

The handheld power tool device according to the invention and / or the handheld power tool according to the invention should / should not be limited to the application and embodiment described above. In particular, the hand-held power tool device according to the invention and / or the hand-held power tool according to the invention can have a number that differs from a number of individual elements, components and units specified here in order to fulfill a function described here. In addition, for the value ranges specified in this disclosure, values lying within the stated limits are also to be considered disclosed and can be used as desired.

drawings

Further advantages result from the following description of the drawing. Three exemplary embodiments of the invention are shown in the drawings. The drawings, description, and claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into useful further combinations.

Fig. 1

eine erfindungsgemäße Handwerkzeugmaschine in einer schematischen Darstellung,

Fig. 2

eine erfindungsgemäße Handwerkzeugmaschinenvorrichtung der erfindungsgemäßen Handwerkzeugmaschine in einem von der erfindungsgemäßen Handwerkzeugmaschine abgenommenen Zustand in einer schematischen Darstellung,

Fig. 3

eine Detailansicht einer Distanzeinheit der erfindungsgemäßen Handwerkzeugmaschinenvorrichtung in einer schematischen Darstellung,

Fig. 4

eine Detailansicht eines Distanzelements der Distanzeinheit aus Figur 3 in einer schematischen Darstellung,

Fig. 5

eine Detailansicht einer Distanzeinheit einer alternativen erfindungsgemäßen Handwerkzeugmaschinenvorrichtung in einer schematischen Darstellung,

Fig. 6

eine Detailansicht eines Distanzelements der Distanzeinheit aus Figur 5 in einer schematischen Darstellung und

Fig. 7

eine Detailansicht einer Distanzeinheit einer weiteren alternativen erfindungsgemäßen Handwerkzeugmaschinenvorrichtung in einer schematischen Darstellung.

Show it:

Fig. 1

a hand tool according to the invention in a schematic representation,

Fig. 2

a handheld power tool device of the handheld power tool according to the invention in a state removed from the handheld power tool according to the invention in a schematic representation,

Fig. 3

2 shows a detailed view of a distance unit of the handheld power tool device according to the invention in a schematic illustration,

Fig. 4

a detailed view of a spacer element of the spacer Figure 3 in a schematic representation,

Fig. 5

2 shows a detailed view of a distance unit of an alternative handheld power tool device according to the invention in a schematic illustration,

Fig. 6

a detailed view of a spacer element of the spacer Figure 5 in a schematic representation and

Fig. 7

a detailed view of a distance unit of another alternative handheld power tool device according to the invention in a schematic representation.

Description of the embodiments

Figure 1 shows a handheld power tool 14a with at least one handheld power tool device 10a. The handheld power tool 14a is designed in particular as a window milling machine or assembly milling machine. However, it is also conceivable for the handheld power tool 14a to have a different configuration that appears to be useful to a person skilled in the art, such as, for example, a configuration as an angle grinder, a circular saw or the like. The handheld power tool 14a has a housing unit 44a. The housing unit 44a is provided for this, at least to receive and / or store a drive unit 46a of the handheld power tool 14a. The housing unit 44a can be designed as a plastic housing unit, as a metal housing unit, as a pot housing unit, as a shell housing unit, as a combination of one of the housing units mentioned or as another housing unit which appears to be useful to a person skilled in the art.

The drive unit 46a is designed in particular as an electric motor unit. However, it is also conceivable that the drive unit 46a has a different configuration that appears to be useful to a person skilled in the art, such as, for example, a configuration as a hybrid drive unit, as a combustion drive unit or the like. The handheld power tool 14a comprises at least one gear unit 48a. The gear unit 48a is arranged, in particular mounted, in the housing unit 44a. The drive unit 46a and the gear unit 48a are preferably provided to drive a shaft 12a, in particular a drive spindle, of the handheld power tool 14a in a manner already known to a person skilled in the art, in particular to drive it in a rotating manner. However, it is also conceivable for the handheld power tool 14a to be decoupled from the gear unit 48a in an alternative embodiment and for the shaft 12a to be driven essentially directly by means of the drive unit 46a. The shaft 12a extends out of the housing unit 44a in a tool receiving area 18a of the handheld power tool 14a. The shaft 12a is provided for connection to a processing tool 50a. The machining tool 50a is in the in Figure 1 illustrated embodiment formed as a rotatably driven saw blade. However, it is also conceivable that the processing tool 50a has a different configuration that appears to be useful to a person skilled in the art. Handheld power tool 14a already has one, at least essentially already, to a person skilled in the art EP 2 363 242 B1 known design on. Unlike that EP 2 363 242 B1 Handheld power tool 14a preferably has handheld power tool device 10a with a distance unit 24a.

The handheld power tool device 10a is provided at least for a movable mounting of the shaft 12a, in particular the drive spindle, of the handheld power tool 14a in at least one guideway 16a of a protective device 20a which can be arranged on the tool receiving area 18a of the handheld power tool 14a. The protective device 20a preferably encloses the machining tool 50a in a state of the machining tool 50a arranged completely in the protective device 20a to protect an operator from injuries. The handheld power tool device 10a comprises at least the protective device 20a and at least one movement unit 22a, which is arranged in particular on the protective device 20a and is intended to move the shaft 12a at least along the guideway 16a ( Figures 2 and 3 ) to be movable relative to the protective device 20a. The movement unit 22a is pivotally mounted on the protective device 20a ( Figure 2 ). A pivot axis 56a of the movement unit 22a runs in particular at least substantially parallel to a rotation axis 58a of the shaft 12a ( Figure 2 ). The movement unit 22a is mounted in a translationally movable manner on the protective device 20a ( Figure 2 ). A translation axis 60a of the movement unit 22a extends in particular at least substantially perpendicular to the axis of rotation 58a of the shaft 12a (FIG. 2). The movement unit 22a is designed as a guide carriage. The machining tool 50a can be moved out of the protective device 20a as a result of a movement of the shaft 12a by means of the movement unit 22a, in particular for machining workpieces (not shown here in more detail) onto one, at least essentially from a person skilled in the art EP 2 363 242 B1 known way to enable. The protective device 20a comprises two outlet openings 52a, 54a, from which the processing tool 50a can be at least partially moved out of the protective device 20a. A person skilled in the art is already familiar with an embodiment and a mode of operation of the protective device 20a from EP 2 363 242 B1 at least essentially known. The protective device 20a has, in particular, a suction connection 62a for connection to an external suction device (not shown in more detail here). It suction of workpiece particles can advantageously be achieved during machining of workpieces.

Furthermore, the handheld power tool device 10a comprises at least the spacer unit 24a, which is designed differently from a linear and / or roller bearing unit of the movement unit 22a and which, in particular at least partially at least substantially non-rotatably, is arranged on the movement unit 22a and / or on the protective device 20a and is provided for this purpose to maintain a minimum distance of the shaft 12a relative to at least one guide contour 26a of the guide track 16a at least during a movement of the shaft 12a along the guide track 16a ( Figure 3 ). The spacer unit 24a has at least one spacer element 30a, which is arranged, in particular at least essentially non-rotatably, on a movably mounted guide slide element 34a of the movement unit 22a. The spacer 30a is designed like a sleeve. The spacer unit 24a has at least the sleeve-like spacer element 30a, which is arranged on the movement unit 22a, in particular at least essentially in a rotationally fixed manner. The spacer 30a engages at least partially in the guideway 16a. The spacer element 30a preferably slides on the guide contour 26a during a movement of the shaft 12a along the guide track 16a.

The spacer element 30a is, in particular at least substantially non-rotatably, arranged on the guide slide element 34a. The spacer element 30a passes through a recess 64a of a further guide slide element 70a of the movement unit 22a. The recess 64a is preferably of identical design with at least one guideway section of the guideway 16a. The further guide slide element 70a is pivotally mounted on the protective device 20a about the pivot axis 56a. The guide slide element 34a is mounted on the further guide slide element 70a so as to be translationally movable along the translation axis 60a.

The sleeve-like spacer 30a has at least one anti-rotation extension 36a, 38a ( Figures 3 and 4 ). The anti-rotation extension 36a, 38a is preferably arranged in the recess 64a of the further guide slide element 70a. During a movement of the spacer element 30a, in particular together with the guide carriage element 34a, along the translation axis 60a relative to the protective device 20a and / or to the further guide carriage element 70a, the anti-rotation extension 36a, 38a can slide on a contour of the further guide carriage element 70a delimiting the recess 64a. The spacer element 30a preferably comprises at least two anti-rotation extensions 36a, 38a. The anti-rotation extensions 36a, 38a preferably have an at least substantially analogous configuration. However, it is also conceivable for the spacer element 30a to have a number of rotation lock extensions 36a, 38a that differs from two. In the following, the mode of operation and / or the configuration of the anti-rotation extensions 36a, 38a will be described in more detail using one of the anti-rotation extensions 36a, 38a. The anti-rotation extension 36a, 38a is preferably provided to arrange the spacer element 30a at least substantially non-rotatably on the guide slide element 34a and / or on the further guide slide element 70a, in particular in the recess 64a. The anti-rotation extension 36a, 38a preferably extends along a direction at least substantially perpendicular to the axis of rotation 58a. The anti-rotation extension 36a, 38a is in particular formed in one piece with a base body 66a of the spacer element 30a ( Figures 3 and 4 ). However, it is also conceivable that the anti-rotation extension 36a, 38a is formed separately from the base body 66a and is at least substantially non-rotatably fixed to the base body 66a by means of a connection which appears to be useful to a person skilled in the art. The base body 66a has a shape of a hollow cylinder with an annular cross section, in particular viewed in a plane running at least substantially perpendicular to the axis of rotation 58a. The base body 66a is provided for the passage of the shaft 12a. The shaft 12a, viewed along the axis of rotation 58a, extends through the base body 66a in an assembled state.

The base body 66a is preferably provided to specify a minimum distance of the shaft 12a relative to at least the guide contour 26a of the guide track 16a by a material thickness of the base body 66a. In particular, an outer surface of the base body 66a slides on the guide contour 26a during a movement of the shaft 12a along the guide track 16a.

The spacer element 30a is mounted such that it can be moved in translation in the recess 64a, in particular by means of the guide carriage element 34a. The spacer element 30a, together with the guide slide element 34a, is mounted such that it can move relative to the protective device 20a, in particular about the pivot axis 56a and / or along the translation axis 60a of the movement unit 22a. The spacer element 30a is arranged on a side of the guide slide element 34a which faces the protective device 20a in a state of the movement unit 22a arranged on the protective device 20a.

The shaft 12a is rotatably supported in the guide carriage element 34a by means of a bearing element 28a of the movement unit 22a. The bearing element 28a is designed as a roller bearing, in particular as a ball bearing. However, it is also conceivable that the bearing element 28a has a different configuration which appears to be useful to a person skilled in the art, such as, for example, a configuration as a slide bearing, a hydraulic bearing or the like. Furthermore, it is also conceivable for the movement unit 22a to be decoupled from the bearing element 28a is formed and the shaft 12a is rotatably mounted, for example, by means of an output shaft bearing element of the handheld power tool 14a arranged in the housing unit 44a. The movement unit 22a has at least the bearing element 28a for rotatably mounting the shaft 12a, which is arranged outside the spacer element 30a of the spacer unit 24a. The spacer element 30a can be arranged at a distance from the bearing element 28a, can rest on an outer surface of an outer ring of the bearing element 28a which runs at least transversely, in particular at least substantially perpendicularly, to the axis of rotation 58a, or in another way relative to the bearing element which appears to be useful to a person skilled in the art 28a may be arranged.

The shaft 12a is in particular rotatably mounted relative to the spacer element 30a, in particular by means of the bearing element 28a, which is arranged on the guide slide element 34a. The shaft 12a can be arranged at a distance relative to an inner surface 68a of the base body 66a of the spacer element 30a facing the shaft 12a, in particular viewed along a direction at least substantially perpendicular to the axis of rotation 58a, or the shaft 12a slides during a rotation about the axis of rotation 58a the inner surface 68a. The spacer element 30a preferably has an inner diameter that is larger than an inner diameter of an inner ring of the bearing element 28a. By means of the spacer unit 24a, a direct contact between the, in particular rotating, shaft 12a and the guide contour 26a of the guide track 16a can advantageously be made during a movement of the shaft 12a along the guide track 16a, in particular during a transition from a guide track section into a further guide track section of the guide track 16a can be avoided, in particular to allow a long service life of the handheld power tool device 10a.

In the Figures 5 to 7 two further exemplary embodiments of the invention are shown. The following descriptions and the drawings are essentially limited to the differences between the exemplary embodiments, with respect to components with the same designation, in particular with respect to components with the same reference numerals, in principle also to the drawings and / or the description of the other exemplary embodiments, in particular the Figures 1 to 4 , can be referenced. To differentiate the exemplary embodiments, the letter a is the reference number of the exemplary embodiment in FIGS Figures 1 to 4 readjusted. In the embodiments of the Figures 5 to 7 the letter a is replaced by the letters b and c.

Figure 5 shows an alternative hand-held power tool device 10b at least for a movable mounting of a shaft (not shown in more detail here), in particular a drive spindle, of a hand-held power tool (not shown here in detail) in at least one guideway 16b on a tool receiving area (not shown here in more detail) of the protective device 20b that can be arranged. The handheld power tool on which the protective device 20b or the handheld power tool device 10b can be arranged has an at least substantially analogous configuration to that in the description of FIGS Figures 1 to 4 described hand tool 14a.

The handheld power tool device 10b comprises at least the protective device 20b and at least one movement unit 22b, which is arranged in particular on the protective device 20b and is intended for movably supporting the shaft at least along the guide track 16b relative to the protective device 20b. The handheld power tool device 10b further comprises at least one spacer unit 24b which is different from a linear and / or roller bearing unit of the movement unit 22b and which, in particular at least partially at least substantially non-rotatably, is arranged on the movement unit 22b and / or on the protective device 20b and is provided for this purpose to maintain a minimum distance of the shaft relative to at least one guide contour 26b of the guide track 16b at least during a movement of the shaft along the guide track 16b.

The spacer unit 24b has at least one spacer element 30b, which is arranged, in particular at least essentially non-rotatably, on a movably mounted guide slide element 34b of the movement unit 22b. The spacer 30b is designed like a sleeve. The spacer unit 24b has at least the sleeve-like spacer element 30b, which is arranged on the movement unit 22b, in particular at least essentially in a rotationally fixed manner. The spacer element 30b at least partially engages in the guideway 16b. The spacer element 30b preferably slides on the guide contour 26b during a movement of the shaft along the guide track 16b. The spacer element 30b is formed in one piece with a securing element 40b of the movement unit 22b for securing a bearing element 28b. The bearing element 28b is for a rotatable mounting of the shaft on the guide slide element 34b, in particular arranged in a bearing seat of the guide slide element 34b. The securing element 40b is provided for axially securing the bearing element 28b on the guide slide element 34b, in particular viewed along an axis of rotation of the shaft. The securing element 40b engages an axial securing of the bearing element 28b on the guide slide element 34b in a securing groove arranged on the guide slide element 34b, in particular along a direction at least substantially perpendicular to the axis of rotation of the shaft.

The spacer element 30b can have at least one anti-rotation extension 36b, 38b ( Figures 5 and 6 ), which is provided to arrange the spacer element 30b at least substantially non-rotatably on the guide carriage element 34b. The anti-rotation extension 36b, 38b is preferably provided to cooperate positively and / or non-positively with at least one anti-rotation area of the guide slide element 34b in order to realize an at least substantially non-rotatable arrangement of the spacer element 30b on the guide slide element 34b. The anti-rotation extension 36b, 38b is in particular formed in one piece with the securing element 40b.

The spacer element 30b formed in one piece with the securing element 40b of the movement unit 22b and / or the securing element 40b enclose / enclose the shaft at least to a large extent, in particular viewed along a circumferential direction running around the axis of rotation. The shaft can be arranged at a distance from an inner surface 68b of a base body 66b of the spacer element 30b facing the shaft, in particular viewed along a direction at least substantially perpendicular to the axis of rotation, or the shaft slides on the inner surface 68b during a rotation about the axis of rotation. The spacer element 30b preferably has an inner diameter that is larger than an inner diameter of an inner ring of the bearing element 28b. The distance unit 24b can advantageously be used during a movement of the shaft along the guideway 16b, in particular during a transition from one guideway section to another guideway section of the guideway 16b, direct contact between the, in particular rotating, shaft and the guiding contour 26b of the guideway 16b can be avoided, in particular in order to enable a long service life of the handheld power tool device 10b. With regard to further features and functions of the in the Figures 5 and 6 Hand machine tool device 10b shown may refer to the in the description of Figures 1 to 4 Handheld power tool device 10a described.

Figure 7 shows a further alternative handheld power tool device 10c at least for a movable mounting of a shaft (not shown here), in particular a drive spindle, a handheld power tool (not shown here) in at least one guideway 16c which can be arranged on a tool receiving area (not shown here) of the handheld power tool Protection device 20c. The handheld power tool on which the protective device 20c or the handheld power tool device 10c can be arranged has an at least substantially analogous configuration to that in the description of FIGS Figures 1 to 4 described hand tool 14a.

The handheld power tool device 10c comprises at least the protective device 20c and at least one movement unit 22c, which is arranged in particular on the protective device 20c and is intended for movably supporting the shaft at least along the guideway 16c relative to the protective device 20c. The handheld power tool device 10c further comprises at least one spacer unit 24c which is different from a linear and / or roller bearing unit of the movement unit 22c and which, in particular at least partially at least substantially non-rotatably, is arranged on the movement unit 22c and / or on the protective device 20c and is provided for this purpose , to maintain a minimum distance of the shaft relative to at least one guide contour 26c of the guide track 16c, at least during a movement of the shaft along the guide track 16c. The distance unit 24c is designed as a link unit. The distance unit 24c has at least one slide track 42c, which is connected to the protective device 20c is arranged and is formed differently from the guideway 16c. The link path 42c preferably forms at least one spacer element 32c of the spacer unit 24c, which is arranged on the protective device 20c, in particular at least essentially in a rotationally fixed manner. The distance unit 24c has at least one link element, which is arranged at least substantially in a rotationally fixed manner on a guide slide element 34c of the movement unit 22c. The link element arranged on the guide slide element 34c forms in particular at least one spacer element 30c of the spacer unit 24c, which is arranged at least essentially in a rotationally fixed manner on the movement unit 22c. The link element is preferably bolt-shaped or pin-shaped. The link element has a main extension axis which, when the link element is arranged on the guide slide element 34c, extends at least substantially parallel to the axis of rotation of the shaft. Starting from the guide slide element 34c, the link element extends at least partially into or through the link path 42c. The link track 42c is arranged laterally offset from the guide track 16c on the protective device 20c. The slide track 42c has in particular at least two slide track sections running transversely to one another. The slide track sections of the slide track 42c each have a course which is at least substantially analogous to a course of at least one of at least two guide track sections of the guide track 16c. The slide track 42c has an L-shaped or a Y-shaped course. A positive guidance can advantageously be achieved by means of a cooperation of the link track 42c and the link element of the distance unit 24c. The distance unit 24c can advantageously avoid direct contact between the, in particular rotating, shaft and the guide contour 26c of the guideway 16c during a movement of the shaft along the guideway 16c, in particular during a transition from a guideway section to a further guideway section of the guideway 16c are, in particular to enable a long service life of the handheld power tool device 10c. Regarding other features and functions of the in the Figure 7 shown Handheld machine tool device 10c may be referred to the handheld machine tool device 10a described in the description of FIGS. 1 to 4.

reference numeral

10

Hand machine tool device

12

wave

14

Hand tool

16

guideway

18

Tool holder portion

20

guard

22

moving unit

24

Distance unit

26

guide contour

28

bearing element

30

spacer

32

spacer

34

Guide carriage element

36

Rotation extension

38

Rotation extension

40

fuse element

42

link path

44

housing unit

46

drive unit

48

gear unit

50

processing tool

52

outlet opening

54

outlet opening

56

swivel axis

58

axis of rotation

60

translation axis

62

suction

64

recess

66

body

68

Inner surface

70

Guide carriage element

Claims (9)

1. Handheld machine tool device at least for a mobile support of a shaft (12a), in particular a drive spindle, of a handheld machine tool in at least one guide track (16a; 16b; 16c) of a protective device (20a; 20b; 20c) that is arrangeable on a tool accommodation region (18a) of the handheld machine tool, with at least the protective device (20a; 20b; 20c), with at least one movement unit (22a; 22b; 22c), which is in particular arranged on the protective device (20a; 20b; 20c) and which is configured to support the shaft (12a) in such a way that it is movable relative to the protective device (20a; 20b; 20c) at least along the guide track (16a; 16b; 16c), characterised in that at least one distance unit (24a; 24b; 24c), implemented differently from a linear-bearing and/or roller-bearing unit of the movement unit (22a; 22b; 22c), which is arranged, in particular at least partially at least substantially rotationally fixed, on the movement unit (22a; 22b; 22c) and/or on the protective device (20a; 20b; 20c) and is configured to maintain, at least during a movement of the shaft (12a) along the guide track (16a; 16b; 16c), a minimum distance of the shaft (12a) relative to at least one guiding contour (26a; 26b; 26c) of the guide track (16a; 16b; 16c),
   the distance unit (24a; 24b; 24c) comprising at least one distance element (30a; 30b; 30c) that is arranged, in particular at least substantially rotationally fixed, on a movably supported guide carriage element (34a; 34b; 34c) of the movement unit (22a; 22b; 22c).
2. Handheld machine tool device according to claim 1, characterised in that the movement unit (22a; 22b; 22c) comprises at least one bearing element (28a; 28b; 28c) for a rotatable support of the shaft (12a), which is arranged outside a distance element (30a; 30b; 30c, 32c) of the distance unit (24a; 24b; 24c).
3. Handheld machine tool device according to one of the preceding claims, characterised in that the distance unit (24a; 24b) comprises at least one sleeve-like distance element (30a; 30b) that is arranged, in particular at least substantially rotationally fixed, on the movement unit (22a; 22b).
4. Handheld machine tool device according to one of the preceding claims, characterised in that the distance unit (24a) comprises at least one sleeve-like distance element (30a) that has at least one anti-rotation projection (36a, 38a).
5. Handheld machine tool device according to one of the preceding claims, characterised in that the distance unit (24b) comprises at least one distance element (30b) that is embodied integrally with a securing element (40b) of the movement unit (22b) for a securing of a bearing element (28b) of the movement unit (22b).
6. Handheld machine tool device according to one of the preceding claims, characterised in that the distance unit (24b) comprises at least one distance element (30b) that is embodied integrally with a securing element (40b) of the movement unit (22b) and encompasses the shaft (12a) at least to a large extent.
7. Handheld machine tool device at least according to one of claims 1 or 2, characterised in that the distance unit (24c) is embodied as a slotted-link unit.
8. Handheld machine tool device according to claim 7, characterised in that the distance unit (24c) comprises at least one slotted-link track (42c), which is arranged on the protection device (20c) and is embodied differently from the guide track (16c).
9. Handheld machine tool, in particular window milling machine or assembly milling machine, with at least one handheld machine tool device according to one of the preceding claims.

Images