EP4327984A1 - Handle adjustment device - Google Patents

Abstract

The invention relates to a handle adjustment device (100; 100') for adjusting the position of a handle (10; 10') relative to an electric hand tool (16), in particular in the circumferential direction around a tool longitudinal axis (A, 34) of the hand tool (16), in particular an angle grinder, and for fixing the handle (10; 10') on a tool bearing (30; 30') of the hand tool. The invention also relates to the hand tool with this handle adjustment device and a method.

Description

The present invention relates to a handle adjustment device for the relative adjustment of a handle and an electric hand tool provided with this handle adjustment device.

Electric hand tools with an adjustable handle or additional handle are known in the prior art, the adjustment of which is complex and time-consuming. Adjusting the handle means changing the position of the handle relative to the hand tool. The handle can usually be attached in various defined positions. This allows the user to handle the hand tool as required for a specific application. In known solutions, the adjustment takes place via a threaded connection. Both the handle and the housing of the hand tool have part of the threaded connection. Often there is a bolt with an external thread on the part of the handle facing the machine, with which an operative connection is established with an opening in the housing of the machine, which includes an internal thread.

Loosening and adjusting a handle using a threaded connection can be cumbersome and time-consuming. With a normal handle the To change the position, the handle can be completely removed from the machine in order to fix it in a different location.

In the prior art, for example, it is known to cover this distance via a threaded connection. When adjusting the handle of a known safety angle grinder, for example, the handle must be moved a distance of up to 11 mm along its own axis. In order to release the handle from the machine or to fix it, it must be moved away from the machine or towards the machine.

EP 2647473 B1 relates to a hand-held power tool with an additional handle for a hand-held power tool with fastening means for releasably attaching the handle to the hand-held power tool. The fastening means have an extension which can be accommodated at least in sections in a recess. Either the extension is arranged on the handle and the recess in the hand-held power tool, or the extension is arranged on the hand-held power tool and the recess in the handle. The fastening means have at least one element that is adjustable relative to the extension and is involved in producing and/or releasing and/or securing a positive and/or frictional connection between the handle and the hand-held power tool. The element comprises at least one ball caught in the extension, which can be adjusted radially relative to the extension between a release position and a fixing position by means of a taper rod.

EP 3020510 B1 describes a side handle for a power tool comprising a base that can be attached to a power tool. The side handle further includes a handle having a central axis, an elongated tubular interior portion having a first end and a second end extending toward the central axis, and an outer sleeve surrounding at least a portion of the interior portion. The outer sleeve is connected to the inner section at the first end of the inner section via a connecting section connected, wherein the connecting portion is elastically deformable to enable pivoting movement of the outer sleeve relative to the inner portion about an axis perpendicular to the central axis of the handle. The handle is attached to the base at the second end of the inner section. The end of the outer sleeve remote from the connecting portion is disposed in proximity to a part of the base when no external forces are applied to the outer sleeve.

DE 11 2009 001126 T5 describes an auxiliary handle for use on a power tool having a housing defining a handle end portion and a chuck end portion, a chuck being disposed on the chuck end portion of the housing. The auxiliary handle includes a first clamp for engaging the housing at a first position, a second clamp for engaging the housing at an engaging position, the second clamp being movable in a first direction toward the first clamp independently of the first clamp to pair the assist handle with the housing. The second clamp may also be moved independently of the first clamp in a second direction away from the first clamp to release the assist handle from the housing.

Based on the known devices of the prior art, the object of the invention is to improve, in particular to accelerate, the adjustment and positioning of a handle.

This object is achieved by a handle adjustment device according to independent claim 1. Preferred optional embodiments of the invention are the subject of the subclaims and can be found in the following description and the figures as well as their description.

The handle adjustment device is used for the relative adjustment of a handle relative to an electric hand tool or its housing, in particular in the circumferential direction around a tool longitudinal axis of an electric hand tool. To fix the handle, it is attached to a Tool bearing of the hand tool is strained. The tool storage can be part of the hand tool and/or part of the adjusting means. For this purpose, the handle adjustment device comprises an adjustment means which can be adjusted on the tool bearing, in particular rotatable in the circumferential direction about the longitudinal axis of the tool on the tool bearing, and can be connected to the hand tool. The tool bearing is preferably formed from two bearing halves, which in the assembled state have an area on which the adjusting means is rotatably arranged. The storage area can be formed entirely or partially on a bearing half.

Furthermore, the handle comprises a first grip element with a first end facing the hand tool, which is connected to the adjusting means, and a second end facing away from the hand tool. The handle additionally comprises a second handle element which is displaceable along a longitudinal axis of the handle on the first handle element from a disengagement position to an engagement position. In the disengagement position, the handle and the adjusting means are adjustable relative to the tool bearing, in particular rotatable about the longitudinal axis of the tool along the circumferential direction of the tool bearing.

In the engagement position, the second handle element can be moved into an engagement region by engaging an engagement section of the first grip element, in which the second grip element is supported on the engagement section in the direction along the longitudinal axis of the handle. For this purpose, the handle has a clamping means that can be actuated by a user, ie movable while applying work power, by actuating which the second handle element can be moved into a locking position in the engagement area relative to the first handle element. The length of the engagement area corresponds in particular to the path that the second clamping element travels when fixing the second handle element on the hand tool. In the locking position, the second handle element is clamped between the engagement section and the tool bearing, and the handle is fixed to the hand tool. By actuating the clamping device, the second handle element is moved in the direction of its longitudinal axis Hand tool moves until the second handle element, in particular its first fixing means, is supported in the locking position on the tool bearing. Since the first handle element is firmly connected to the adjusting means, a relative movement occurs between the first and second handle elements. This relative movement, from the position (engagement position) in which the second clamping means rests on the engagement section, can correspond to the length of the engagement region or be smaller. The force generated by actuating the clamping device preferably also clamps the adjusting device with the tool bearing. The handle is then firmly connected to the hand tool.

A position of the handle on the hand tool can therefore be changed quickly and reliably.

An electric hand tool within the meaning of the invention is a tool that is required to carry out a machine-assisted craft activity. A user grips the hand tool with both hands, with one hand gripping an area of the housing of the hand tool and the other hand gripping the handle of the hand tool. An electric hand tool can be powered by a stationary energy source, such as a power supply, a compressor or a fuel line, or a wireless energy source, such as a battery/accumulator or a fuel tank. However, other forms of drive are also possible and should be understood within the meaning of the invention.

A tool bearing in the sense of the invention represents any component of the machine tool that is functionally designed to be designed as a counter bearing with respect to the handle in order to absorb a tension for fixing the handle. The tool bearing can be a component or component section that has or consists of a thermoplastic, a thermoset or a metallic material, with a material pairing and other types of materials also being possible.

An adjusting means in the sense of the invention represents a means that is functionally set up to mount the handle on the hand tool in a detachable or non-detachable manner, and by a relative movement of the adjusting means to the hand tool, the handle in at least two positions that are different from one another, in particular by translation and/or to adjust a rotation of the adjusting means. The adjusting means can be designed in one piece or in two pieces or in several pieces.

A (first or second) handle element in the sense of the invention is an element that is functionally designed to direct a flow of force within the handle. The first or second handle element can have or be made from a thermoplastic, a thermosetting plastic, a metallic material, or material pairs or combinations thereof. The first and second handle elements can be made from different materials or from the same material. A friction-reducing or a friction-increasing intermediate layer or a lubricant can be arranged on the contact surface between the first and second grip element.

A non-positive connection in the sense of the invention means that a force field due to a suitable preload exists between the connection partners during the entire operating period. According to the invention, the connection partners are at least the adjusting means, the first and second handle elements, the tool bearing and the clamping means, which is set up to induce and release the frictional connection and the associated tensioning of the handle on the hand tool.

A tensioning means that can be actuated by a user in the sense of the invention therefore represents any component that is suitable for controlling a reversible and fixable, at least over a section rotation-free, relative movement between the first and second handle elements. Preferred clamping means are selected from the group of possible clamping means comprising a screw connection, a quick-release device, a bayonet lock, and a latching arrangement.

In particular, it is not possible to fix the handle on the tool between the disengagement position and the engagement position, since in this position the second handle element is preferably not in contact with the tool bearing, and the handle is translational, in particular rotation-free, at least in a section between the disengagement position and the engagement position. is movable along the longitudinal axis of the handle and is movable relative to the tool bearing in particular via the adjusting means.

The first grip element is advantageously an elongated component, preferably an axle, with the engagement section in particular being or having a first clamping element on the elongated component or the axle, spaced from the second end of the component/the axle. An axis represents a machine element that is suitable for supporting a component that rotates and can be moved on the axis.

A first or second clamping element represents a functional component of the clamping means, which is set up to induce a tension via a frictional connection in interaction with at least one further clamping element or during a relative movement of the two clamping elements. Depending on the application of the desired clamping mechanism of the clamping means, in particular screw connection, quick-release device, bayonet lock, locking arrangement, etc., suitable configurations of the first or second clamping element can be selected.

The second handle element is preferably an elongated component, advantageously a core element or a core of the handle. A core in the sense of the invention represents a component that is suitable for being mounted on the first handle element, or an axis, so that it can move at least in sections in directions along the longitudinal axis of the handle. The handle may include at least one handle housing portion surrounding the core.

The core element or core has a first end facing the hand tool and a second end facing away from the hand tool, wherein the first handle element/axis is preferably arranged inside the core along the longitudinal axis of the handle, so that the core is movable along the longitudinal axis of the handle on the first Handle element/axis is mounted. The first handle element/the axis is preferably connected to the adjusting means in the area of the first end. The tensioning means is preferably captively and preferably rotatably attached to the second end of the core.

A captive fastening represents a fastening that connects the clamping means to the second handle element/core element in a detachable or non-detachable manner. For this purpose, the clamping means advantageously comprises a collar and guide channel, in particular in order to rotatably mount the clamping means relative to the second handle element.

A second clamping element is also preferably arranged in the clamping means. This is preferably arranged in a rotation-free manner in the clamping means and can be brought into engagement with the first clamping element of the axis in order to clamp the handle with the hand tool via a relative movement from the axis to the core. Furthermore, a first spring element is preferably arranged in the clamping means in order to return the second handle element from the engagement position P2 to the disengagement position P1.

The second clamping element is advantageously designed as an internal thread connected to the clamping means, which can in particular be manufactured integrally with a base part, in particular an end cap, of the clamping means. The internal thread can be part of the clamping device or part of a component connected to the clamping device, or can in particular be screwed into the clamping element. The clamping element can be arranged to be movable relative to the base part or not designed to be relatively movable.

The second clamping element is advantageously designed as an internal thread of a nut, in particular a hexagon nut. The nut is preferably mounted movably in the direction along the longitudinal axis of the handle on a guide section of the clamping means arranged in the region of the second end of the first handle element/the axis. The guide section has a smaller diameter than the inner diameter of the nut.

If the clamping device uses a thread, it is advantageous to rotate the clamping device by less than 5, preferably less than 4, in particular less than 3 thread turns, in particular only approximately 2.5 thread turns, in order to transfer the handle from the engagement position along the engagement area into the locking position necessary. This means that when using the thread, the effort required to reliably fix the handle is minimal.

A special embodiment of the clamping device includes a multi-start thread. , with at least two threads. This increases the possibility of attaching the nut to the engagement section of the first handle element. For example, in the case of an engagement section that consists of a thread with two turns and a double pitch, the attachment options for the second clamping device are doubled and at the same time the number of revolutions for bridging the desired thread turns in order to attach or detach the handle from the machine is reduced , by half.

The first handle element/axle advantageously comprises an axial recess at its second end. The axial recess is advantageously a blind hole. The axial recess can also extend over the entire length of the first handle element/axle, with the axle being designed as a tube in this embodiment.

The clamping means preferably (also) comprises a recess, in particular a blind hole, the recess extending from an end face of the clamping means facing the first handle element/the axis extends along the longitudinal axis of the handle into the clamping device, or its base part. The recess of the clamping means is preferably designed to accommodate the second end of the axle. The clamping means preferably comprises a pin, the pin preferably extending from a base of the recess, and the axial recess of the axle engaging over the pin in at least one relative position of the first and second handle elements.

The handle adjustment device preferably has a spring element, in particular also referred to as a first spring element. The spring element is in particular arranged to return the second handle element from the second position P2 to the first position P1. The spring is relaxed, which was previously tensioned by the user by actuating the spring element using the tensioning device. Preferably, the spring element is arranged between the first handle element and the clamping means, preferably the spring element is arranged between the first handle element and the second handle element. Preferably, the spring element is arranged between the adjusting means and the second handle element.

The spring element is preferably arranged on the clamping means, in particular in contact with the clamping means or connected to it. The effect of the (first) spring element of pushing the second handle element away from the hand tool in the longitudinal axis of the handle can also be achieved by arranging the spring element at a location other than on the clamping means. For this purpose, it is in particular provided that the spring element exerts a force between the tool bearing and the second handle element, in particular between the adjusting means and the second handle element, in particular between the first handle element and the second handle element, whereby the second handle element, which is displaceable on the first Handle element is arranged, is pushed away from the hand tool.

Preferably, a tensioning means has at least one spring element, in particular a coil spring. The clamping means advantageously comprises a first spring element, wherein the diameter of a recess in the clamping means can be dimensioned such that the first spring element is arranged around the pin in the assembled state and is received in the recess, and wherein the first spring element is further inserted at its ends There is contact with the axis and the clamping device. The spring travel of the first spring element and the recess are dimensioned such that a force acts on the axle starting from the clamping device via the first spring element. The first spring element is functionally set up to push the core away from the hand tool in the longitudinal axis of the handle and to move it into the disengagement position in order to enable a simple adjustment of the handle in the circumferential direction of the longitudinal axis of the handle.

A spring element in the sense of the invention represents any element that is suitable for being sufficiently elastically deformed in practical use. Spring elements can act either as a tension spring or as a compression spring. Tension springs are loaded by pulling the ends apart, while compression springs are loaded by compressing the ends, which introduces a force into the spring. Spiral springs, for example, are suitable for this. However, other geometric designs or materials, such as elastomer/rubber elements, are also possible.

When using a nut, it is advantageously provided that the nut is biased against a stop via a second spring element, which is arranged between the nut and the clamping device, the stop being part of the second handle element/the core and being in contact with the end face of the clamping device . This ensures that the nut can be brought into engagement with the external thread (engagement section and first clamping element) of the first handle element/axle at any time.

The second spring element is advantageously tensioned against the base of the recess of the clamping means or a projection of the recess of the clamping means.

The second handle element advantageously comprises first fixing means and the adjusting means comprises complementary second fixing means, wherein the first fixing means and the second fixing means are set up to exert a positive connection in the locking position.

A fixing means in the sense of the invention therefore represents a section of the second handle element and a section of the adjusting means, the geometry of which is suitable for entering into a positive connection with a complementary geometry of the other component, and thereby blocking degrees of freedom of their relative movement. In one embodiment, the second fixing means have two support surfaces for this purpose, which are arranged in particular at an angle to one another, so that the first fixing means can form a positive connection with the second fixing means at two different angular positions. In this way, the handle and the adjusting means are advantageously set up to be adjustable in at least two different angular positions relative to the tool bearing or to the tool longitudinal axis, in particular at an angle of preferably 45 degrees and preferably 90 degrees, so that one with respect to the tool longitudinal axis angular position of the handle can be achieved.

The tool storage advantageously comprises at least one recess, which is set up to exert a positive connection with the first fixing means of the second handle element in the locking position. The recess is designed to block a movement of the handle directed in the circumferential direction of the tool's longitudinal axis, and only to enable movement of the handle in the longitudinal axis of the handle.

Advantageously, the first handle element is pivotally connected to the adjusting means in the region of the first end, such that the handle can be arranged by pivoting at an angle other than 90° in relation to the angle between its longitudinal axis of the handle and the longitudinal axis of the tool. The recess of the tool bearing is designed in such a way that the pivoted handle is also blocked in the fixing position by a positive fit in a movement of the handle directed in the circumferential direction of the tool's longitudinal axis.

The first handle element advantageously further comprises limiting means, in particular a pin connected to the first handle element, which engages in an elongated hole in the second handle element and limits the axial displacement of the first handle element relative to the second handle element. The pin can be pressed into the first handle element or connected using another joining method. Alternatively, an elongated hole or a longitudinal recess can also be arranged on the first handle element and the pin on the second handle element.

The recess of the clamping means and the pin are advantageously designed such that the pin is received by the recess in the disengagement position and the engagement position. Tilting of the first and second handle elements when transferring from the engagement position to the disengagement position, and vice versa, can thus be prevented.

The adjusting means can be made from different materials or a combination of different materials. The adjustment means is advantageously a ring made of plastic or a thin band made of metal or a fabric structure. The adjusting means can be designed in one piece, in two pieces or in several parts, in particular to enable simple assembly on the hand tool.

The core advantageously comprises means for receiving handle housing sections, in particular handle shells. The handles serve to protect the inside Electronics and/or mechanics acting on the handle and the operator gripping the handle as non-slip as possible.

The core advantageously also includes electronics for determining whether the handle is being held by an operator. In this case, the handle has at least one means, for example an electrical line, which communicates with an electrical control device of the electric hand tool in order to exchange information, for example in the form of signals.

• Bereitstellen eines Handwerkzeugs;
• Befestigen der erfindungsgemäßen Handgriffverstellvorrichtung, insbesondere des mit dem Handgriff verbundenen Verstellmittels an einem Werkzeuglager des Handwerkzeugs;
• Vorzugsweise: Fixieren des Handgriffs und/oder des Verstellmittels am Werkzeuglager.

The invention is also directed to a method for assembling a hand tool provided with the handle adjustment device according to the invention, in particular an angle grinder, comprising the steps:

• Providing a hand tool;
• Fastening the handle adjustment device according to the invention, in particular the adjustment means connected to the handle, to a tool bearing of the hand tool;
• Preferably: Fixing the handle and/or the adjusting means on the tool bearing.

• Fig.1 zeigt einen montierten Handgriff gemäß einem Ausführungsbeispiel einer erfindungsgemäßen Handgriffverstellvorrichtung;
• Fig.2 zeigt eine Schnittansicht des montierten Handgriffs aus Fig. 1 in verspanntem Zustand;
• Fig.3 zeigt ein Verstellmittel der Handgriffverstellvorrichtung gemäß Fig. 1 und 2;
• Fig.4 zeigt eine perspektivische Ansicht eines Spannelements der Handgriffverstellvorrichtung gemäß Fig. 1 und 2;
• Fig.5 zeigt eine Schnittansicht eines Spannelements der Handgriffverstellvorrichtung gemäß Fig. 1 und 2;
• Fig.6 zeigt eine perspektivische Ansicht eines ersten Griffelements der Handgriffverstellvorrichtung gemäß Fig. 1 und 2;
• Fig.7 zeigt eine perspektivische Ansicht eines zweiten Griffelements der Handgriffverstellvorrichtung gemäß Fig. 1 und 2;
• Fig.8 zeigt eine Schnittansicht eines zweiten Griffelements der Handgriffverstellvorrichtung gemäß Fig. 1 und 2;
• Fig.9 zeigt eine Schnittansicht eines Spannelements im montierten Zustand der Handgriffverstellvorrichtung gemäß Fig. 1 und 2;
• Fig.10 zeigt eine Seitenansicht der Handgriffverstellvorrichtung gemäß Fig. 1 und 2;
• Fig.11 zeigt eine Draufsicht der Handgriffverstellvorrichtung mit verschiedenen Positionen des Handgriffs der Handgriffverstellvorrichtung gemäß Fig. 1 und 2;
• Fig.12 zeigt eine weitere Schnittansicht eines montierten Handgriffs in verspanntem Zustand der Handgriffverstellvorrichtung gemäß Fig. 1 und 2;
• Fig.13 zeigt eine weitere Schnittansicht eines montierten Handgriff in verspanntem Zustand der Handgriffverstellvorrichtung gemäß Fig. 1 und 2, wobei der Handgriff im 45° Winkel angebracht ist.
• Fig.14 zeigt eine weitere Schnittansicht eines Handgriffs in der Feststellposition und in der Ausrückposition der Handgriffverstellvorrichtung gemäß Fig. 1 und 2.
• Fig.15 zeigt eine schematische Seitenansicht einer Handgriffverstellvorrichtung gemäß einem Ausführungsbeispiel der Erfindung, i) in der Ausrückposition P1, ii) in der Einrückposition P2 und iii) in der Feststellposition P3.
• Fig. 16a, 16b und 16c zeigen jeweils schematisch eine mögliche und bevorzugte alternative Ausgestaltung des Spannmittels einer Handgriffverstellvorrichtung gemäß Fig. 1 oder Fig. 15.

Further advantages, features and possible applications of the present invention result from the following description in connection with the figures. It shows:

• Fig.1 shows a mounted handle according to an exemplary embodiment of a handle adjustment device according to the invention;
• Fig.2 shows a sectional view of the assembled handle Fig. 1 in a tense state;
• Fig.3 shows an adjustment means of the handle adjustment device according to Fig. 1 and 2 ;
• Fig.4 shows a perspective view of a clamping element of the handle adjustment device Fig. 1 and 2 ;
• Fig.5 shows a sectional view of a clamping element of the handle adjustment device Fig. 1 and 2 ;
• Fig.6 shows a perspective view of a first handle element of the handle adjustment device according to Fig. 1 and 2 ;
• Fig.7 shows a perspective view of a second handle element of the handle adjustment device Fig. 1 and 2 ;
• Fig.8 shows a sectional view of a second handle element of the handle adjustment device according to Fig. 1 and 2 ;
• Fig.9 shows a sectional view of a clamping element in the assembled state of the handle adjustment device according to Fig. 1 and 2 ;
• Fig.10 shows a side view of the handle adjustment device according to Fig. 1 and 2 ;
• Fig.11 shows a top view of the handle adjustment device with different positions of the handle according to the handle adjustment device Fig. 1 and 2 ;
• Fig.12 shows a further sectional view of a mounted handle in the clamped state of the handle adjustment device Fig. 1 and 2 ;
• Fig.13 shows a further sectional view of a mounted handle in the clamped state of the handle adjustment device Fig. 1 and 2 , with the handle attached at a 45° angle.
• Fig.14 shows a further sectional view of a handle in the locking position and in the disengagement position of the handle adjustment device according to Fig. 1 and 2 .
• Fig.15 shows a schematic side view of a handle adjustment device according to an embodiment of the invention, i) in the disengagement position P1, ii) in the engagement position P2 and iii) in the locking position P3.
• 16a, 16b and 16c each show schematically a possible and preferred alternative embodiment of the clamping means of a handle adjustment device Fig. 1 or Fig. 15 .

Fig. 1 shows a handle 10 of a handle adjustment device 100 mounted on a hand tool 16. This includes a second handle element 24 and two handle shells 11 and is connected at its first end 12 to the adjustment means 32 via second fixing means 31. In the embodiment shown, the hand tool 16 is an angle grinder. The adjusting means 32 is captively attached in the circumferential direction around the hand tool 16, the adjusting means 32 being rotatably mounted on the tool bearing 30 ( Figure 10 ).

Fig.2 shows a sectional view of an assembled handle 10 in a clamped state. At the second end 14 of the handle 10, a clamping device 8 in the form of an end piece is arranged in a captively and rotatably mounted manner. For this purpose, the handle shell 11 has a guide channel 27, into which a collar 28 of the clamping device engages. According to the invention, the clamping device 8 is equipped with a function that makes it possible to change the position of the handle 10 quickly and reliably. The second clamping element 6, designed as a hexagonal nut, is movably arranged in the clamping means 8 in the direction of the longitudinal axis 21 of the handle 10.

Fig.3 shows one half of the adjusting means 32 in the form of half a plastic ring. The adjusting means can be designed in one piece or from several parts. Furthermore, the adjusting means 32 has second fixing means 31, which are set up to form a positive or non-positive connection with the first fixing means 15, and thus to store the handle 10 in the fixing position not only against the tool bearing 30 but also against the adjusting means 32. See also 12 and 13 .

Fig. 4 shows a perspective view of a clamping device 8. For this purpose, the clamping device 8 has a recess 17. The recess extends from an end face 18 of the clamping device 8 into the clamping device in the form of a blind hole. The recess 17 has a shaped section 22, which makes it possible to receive the second clamping element 6, for example a hexagon nut, and to fix it in a form-fitting manner in the radial direction. The mold section 22 extends from the end face 18 into the recess 17. Furthermore, the clamping means 8 has a collar 28, which is set up, in cooperation with a guide channel 27, to store the clamping means 8 on the second handle element 24 in a captive and rotation-free manner.

Fig.5 shows a sectional view of a clamping device 8. At the base 19 of the recess 17, a pin 20 is arranged, which holds the first spring element 9 ( Fig.2 ) can accommodate in the form of a compression spring. The recess 17 has a shaped section 22, which makes it possible to accommodate the second clamping element 6 and to fix it in a form-fitting manner in the radial direction. Furthermore, the tensioning means 8 has an area between the base 19 and the projection 23 that is set up to accommodate the second spring element 5 ( Fig.2 ) to store. The pin 20, which receives the first spring element 9, and the receiving area in which the second spring element 5 is arranged are preferably designed in such a way that the spring elements 9 and 5 are supported (braced) and still movable in the clamping means 8.

Fig. 6 shows a perspective view of a first handle element 1. In the exemplary embodiment shown, the first handle element 1 is an axis, whereby the shape, size and material can be determined according to the requirements. The axis is permanently, flexibly or detachably connected in the area of its first end 43 to the adjusting means 32, which is rotatably mounted on the machine 16, and extends through the handle 10. The axis 1 has at its second end 41, which is arranged at a distance from the adjusting means 32, a recess 42 which engages over the pin 20 of the clamping means 8 and the first spring element 9. Ideally, the recess 42 and the pin 20 are designed so that interlocking is ensured both in the state in which the handle 10 is firmly or loosely connected to the hand tool 16, i.e. in positions P1 and P2. This ensures the functionality of the spring elements described below. This prevents the first spring element 9 from buckling. The diameter of the recess 42 is dimensioned such that the first spring element 9, which is received by the pin 20, can also be received in the recess 42. The spring travel of the first spring element 9 and the length of the recess 42 are dimensioned such that a force acts on the axis 1, whereby the clamping means 8 is moved in the direction away from the adjusting means 32. Since the clamping means 8 is positively connected to the handle shell 11 in the axial direction, the handle 10 is moved away from the hand tool 16 due to the spring force of the first spring element 9.

For this purpose, the core 24 is movably mounted on the axis 1 and, in the exemplary embodiment shown, comprises an electronic circuit which is set up to detect gripping of the handle. The axis 1 preferably has a first clamping element 3 at its second end 41 as an engagement element, which in the exemplary embodiment shown is designed in the form of a thread. The thread 3 is arranged at a distance from the second end 41 of the axis 1. The thread 3 is further positioned on the axis 1 so that in the disengagement position, in which the handle 10 is loosely, i.e. not firmly, connected to the hand tool and thus the first spring element 9 is relaxed, the threads pass through the second clamping element 6, in the form of a nut in the exemplary embodiment shown, cannot be gripped.

For this purpose, the axis 1 has a guide section 4 following the thread 3 in the direction of the second end 41, which has a slightly smaller diameter than the inner diameter of the second clamping element, the nut 6. This ensures the mobility of the nut 6 in the longitudinal direction of the axis 1. To attach the handle 10 to the power tool 16, it is moved toward the hand tool 16 by overcoming the spring force of the first spring element 9. By moving the handle 10 towards the hand tool 16, the nut 6 comes into contact with the first threads of the thread 3. By turning the nut 6 by rotating the clamping device 8, the nut 6 comes into engagement with the thread 3 and an active connection is created. The distances, longitudinal mobility of the handle 10 and the positioning of the thread 3 on the axis 1 are dimensioned such that the handle 10 can be clamped quickly and easily to the hand tool by slightly turning the clamping device 8. For this purpose, it is sufficient if there is a slight overlap of, for example, 2.5 thread turns between the nut 6 and the thread 3.

Fig.7 shows a perspective view of a second handle element 24 in the form of a core. The core 24 has recesses 25 and projections 26 which interact with complementary recesses and projections of the handle shell 11. As a result, the handle shell 11 can be connected to the core 24 in a stationary manner. The handle shell 11 is secured with standard screws. The handle shell 11 can be formed from two shell halves. Furthermore, the core 24 has a stop 7, against which the nut 6 rests constantly due to the preload of the second spring element 5.

Fig.8 shows the side view of a handle 10 with the handle shell removed on one side with a view of a second handle element 24. The handle 10 has at its first end 12 first fixing means 15, which are used for storage, among other things an adjusting means 32 and the tool bearing 30 are formed. The adjusting means 32 has second fixing means 31, for example a flange, the tool bearing 30 has recesses 33 which cooperate with the first fixing means 15, and in the state (position P3) in which the handle 10 is firmly connected to the machine, a positive connection form. The first fixing means 15 and second fixing means 31 as well as the recesses 33 can be recesses and projections in the form of a tongue and groove. The second fixing means 31 are part of the adjusting means 32 and are arranged on it. The adjusting means 32 is rotatably mounted on the hand tool 10.

The movement path of the handle 10 along the longitudinal axis 21 of the handle is limited by a pin 2 which is pressed into the axis 1. This pin 2 runs in an elongated hole 13 of the core 24, the length of the elongated hole 13 determining the maximum path of longitudinal mobility of the handle 10, in particular the position P1.

Fig.9 shows a sectional view of a clamping device 8 in the assembled state. A second spring element 5 in the form of a compression spring is held on the guide section 4. The compression spring 5 is arranged with a preload between the base 19 of the recess 17 of the clamping means 8, or alternatively between the projection 23 of the recess 17 and the nut 6. As a result, a force acts on the nut 6 in the longitudinal direction of the axis 1 and moves the nut 6 up to a stop 7 which is arranged on the core 24. The stop 7 is part of the core 24 and is in contact with the end face 18 of the clamping device 8. The nut 6 is therefore always pretensioned by the compression spring 5 along the longitudinal axis of the axis 1 in the direction of the hand tool.

Fig.10 shows a side view of the handle adjustment device 100. The axis 1 is clamped to the core 24 (not shown) and the adjustment means 32 on the tool bearing 30. The tool bearing 30 also has recesses 33 for the positive connection of the first fixing means 15.

Fig.11 shows a top view of the handle adjustment device 100 with different positions of the handle 10. The handle 10 can be attached via the adjustment means 32 at three positions offset by 90° at a 90° or 45° angle in relation to the tool longitudinal axis 34. In alternatively designed exemplary embodiments (not shown), the distance between the positions of the handle 10 can deviate from 90 ° and be arranged in angular positions that differ from one another. Different angles with respect to the tool longitudinal axis 34 are also possible. This requires a corresponding arrangement of the recess 33 and a corresponding shaping design (angular arrangement of the handle 10 in relation to the tool longitudinal axis 34) of the recess 33 on the tool bearing. The positioning of the handle on a machine is not limited to the in Figure 11 4 positions shown. Depending on the number and arrangement of the recess 33 on the tool bearing 30, several positions, for example 6 or 8, can be provided for the handle positioning.

Fig.12 shows another sectional view of an assembled handle 10 in a clamped state. The first fixing means 15 and the second fixing means 31 form a positive connection and store the handle 10 in the clamped state on the hand tool 16.

Fig.13 shows a further sectional view of an assembled handle 10 in a clamped state, with the handle, or the longitudinal axis of the handle, being attached at a 45° angle with respect to the longitudinal axis 34 of the tool. The first fixing means 15 rest on a V-shaped section of the second fixing means 31 of the adjusting means 32.

Fig.14 shows further sectional views of a handle 10, in particular at the top in the locking position and at the bottom in the disengagement position.

The upper illustration shows the handle 10 in the locking position P3, with the first fixing means 15 being in contact with the adjusting means 32. By rotating the clamping device 8 according to Fig. 9 From the engagement position in which the nut 6 rests on the thread 3, a non-positive connection was established between the first and second handle elements, thereby generating a tension between the tool bearing 30, the adjusting means 32, and the first 1 and second 24 handle elements was, whereby the handle 10 is fixed on the tool bearing in the locking position.

The lower illustration shows the handle 10 in the disengagement position P1, which is displaced along the longitudinal axis 21 of the handle by a distance x - corresponding to the difference between P1-P3, in particular P2 being approximately equal to P3. The first fixing means 15 is spaced from the adjusting means 32 and the handle 10 can therefore be moved into at least one further position.

According to Fig. 9 The first spring element 9 pushes the handle 10 away from the hand tool 16 in the release position relative to the hand tool 16 and thus enables easy adjustment without the handle 10 having to be detached from the hand tool 16. By moving the handle 10 from the disengagement position to the engagement position along the longitudinal axis of the handle 21 according to Fig. 2 The first 3 and second 6 clamping elements come into contact. Following the engagement position, the clamping device 8 enables the handle 10 to be clamped on the hand tool 16. The second clamping device 6 moves along an engagement area relative to the first clamping device 3 until the handle 10 is firmly fixed on the hand tool 16.

Figure 15 shows a handle adjustment device 100' according to an exemplary embodiment of the invention, which is used for the relative adjustment of a handle 10' in the circumferential direction U about a tool longitudinal axis A of an electric hand tool, in particular an angle grinder, and for fixing the handle 10' on a tool bearing 30' of the hand tool serves.

The components of the handle adjustment device 100' correspond analogously to the respective components of the handle adjustment device 100, each according to the use of the same number in the reference number of two analog components X and X'. While in the handle adjustment device 100, in which the locking position P3 corresponds to the engagement position P2 (cf. Fig. 14 ), in particular approximately or exactly corresponds, the position P2 in the handle adjustment device 100 'deviates from the position P3 - but this is not mandatory and can also be P2 equal to P3, in particular P2 almost equal to P3 or exactly equal to P3. Nevertheless, for the handle adjustment device 100', the distance d1 between P1 and P2, measured along the longitudinal axis G of the handle, is preferably greater than the distance d2 between P2 and P3, in particular d1>d2*f, where f is preferably 2, 3, 4, 5, 6, 8, 10, 15, 20, 50. In principle, the invention can also be implemented with d1 < d2. In particular, in the handle adjustment device, in particular according to exemplary embodiments 100 and 100', it is preferred and possible for a fixing means 15, 15' of the second handle element 24, 24' to rest against the tool bearing 30, 30' in the engagement position P2.

The handle adjustment device 100 'the Figure 15 is shown in the three positions P1, P2 and P3, correspondingly in the figure sections i), ii) and iii). By means of the spring 9 ', which is compressed and tensioned starting from P1 to P2 and P3, a restoring force is exerted, which returns the second handle element 24 starting from the position P2 to the position P1.

The handle adjustment device 100' has an adjustment means 32', which can be stored in the circumferential direction (U) around the tool's longitudinal axis (A, 34) on the tool bearing 30' and can be connected to the hand tool, in particular in that the adjustment means 32' partially covers a housing section of the hand tool , in particular in a circumferential angle range a that encompasses 0 <a ≤360. The adjusting means 32 'can be in one piece or in several parts, in particular when mounted on the hand tool Adjusting means 32 'several components of the adjusting means can be joined together.

The handle adjustment device 100' has the handle 10', which has a first handle element 1' with a first end 43' facing the hand tool, which is connected to the adjusting means 32', and a second end 41' facing away from the hand tool. The handle adjustment device 100' has a second handle element 24', which is displaceable along a handle longitudinal axis G on the first handle element 1' from a disengagement position P1 to an engagement position P2. In the disengagement position P1, the handle 10' is movably arranged on the tool bearing 30', in particular arranged along the circumferential direction U of the tool bearing 30'. In the engagement position P2, the second grip element 24' can be moved into an engagement region by engaging the second clamping element 6' in an engagement section 3' of the first grip element 1'. By means of the second clamping element 6, which is positively connected to the second handle element 24', the second handle element 24' is supported on the engagement section 3' within the engagement area in the direction along the handle's longitudinal axis G. As a result, the second handle element 24' is blocked against displacement in at least one direction along the longitudinal axis G of the handle. This occurs through the interaction of the second clamping means 6' with the engagement section. An abutment is created.

The handle 10' has a tensioning means 8' that can be actuated by a user, by actuating which the second handle element 24' can be moved into a locking position P3 in the engagement area relative to the first handle element 1', in which the second handle element 24' is between the engagement section 3 'and the tool bearing 30' is clamped and the handle 10' is fixed to the hand tool.

The clamping means 8', as well as the clamping means 8 of the handle adjustment device 100, which is designed as a rotary thread cap, can also be designed differently in order to hold the second handle element in the locking position between the engagement section and To brace the tool bearing. Possible alternatives are in the Figures 16a, 16b and 16c shown.

Figure 16a shows the clamping device 8a, which here has a sleeve or cap as a base part 52 or is essentially formed from it, which is equipped with a positive guide 50. This sleeve or cap 8a is preferably rotatable about the longitudinal axis G of the handle and is preferably connected to the second handle element 24 '(24) in a non-displaceable manner in the direction along the axis G. The first handle element 1 'is connected, in particular firmly connected, to a sliding block 51, which engages in the positive guide 50. The clamping device 8a is actuated by rotating the sleeve/cap, with the positive guide 50 pulling the sleeve/cap along the sliding block 51 in the direction of the tool bearing 30'. As a result, the second handle element 24' is clamped between the sliding block 51, which serves as an engagement section 3', and the tool bearing 30', whereby the handle 10' is fixed. The positive guide 50 (second clamping element 6a) and the sliding block 51 (first clamping element) thus form a bayonet lock. Also in the case of the clamping element 8a, a compression spring 9' is preferably provided between the first handle element 1' and the clamping means 8a connected to the second handle element 24', which is tensioned during actuation (rotation for fixing P2 to P3 in the engagement area, indicated by the lightning symbol). , and by means of which the clamping means 8a with the second handle element can be reset from P2 to P3.

Figure 16b shows the clamping device 8b, which is designed as a quick-release arrangement. It has a base part 62, which is preferably connected to the second handle element 24 '(24) in a non-displaceable manner in the direction along the axis G relative to the handle axis G, or which in particular can also be formed integrally with the second handle element 24'. The first handle element 1' has a pivot axis 61 for a quick-release lever 63, which is pivotally connected to the pivot axis 61 and thus forms part of the first handle element 1'. The quick-release lever 63 forms a first clamping element or an engagement section 3 '. The eccentric about the pivot axis 61 Running outer surface 64 of the quick-release lever engages in the base part 62 and can be placed on a stop surface 65 (second clamping element 6b) of the base part. The base part 8b is moved from P1 to P2 and from there into a locking position by the quick-release lever 63 engaging in the base part and the outer surface 64 resting on the stop surface 65 under the pressure imparted by the compression spring 9 '. In this position, the clamping means 8b is actuated by the user pivoting the quick-release lever, and the eccentrically extending outer surface 64 presses the base part 62 connected to the second handle element 24 'in the direction of the tool bearing 30', with the compression spring 9' also being pressed. is further compressed. As a result, the second handle element is clamped between the outer surface 64, which serves as an engagement section 3', and the tool bearing 30', whereby the handle is fixed. The clamping means is thus formed by means of a quick-release lever. Similar clamping devices can be implemented using a similar eccentric arrangement.

Figure 16c shows the clamping device 8c, which here has a sleeve or cap as a base part or is essentially formed from it, which is equipped with a latching arrangement. This sleeve or cap 8a is connected to the second handle element 24 '(24) in a non-slidable manner in the direction along the axis G, but can also be connected to it in a movable manner. The first handle element 1 'has a sawtooth rail or rod 71, which forms a first clamping element, which extends along the handle's longitudinal axis G, and whose adjacent teeth each form an engagement section for the pin 70. The base part 72 has the spring-loaded pin 70 (second clamping element 6c), which can engage in several positions, each of which is formed between two teeth of the sawtooth rail 71 when the pin 70 is displaced along the longitudinal axis G of the handle in the direction of the tool bearing, which is the case The second handle element and the clamping device 8c are moved from position P1 to P2. As soon as the pin engages in the first engagement section 3 ', it is secured against being reset in the direction G (away from the tool bearing). A further displacement of the pin 70 in the direction of the tool bearing 30 ', which is caused by the If the ramp of the sawtooth is inclined relative to the pin longitudinal axis S, the second handle element 24' presses against the tool bearing 30' and further tensions the compression spring 9'. To release the locking connection, the user grabs the pin 70, which is movable relative to the sleeve, and pulls it away from the sawtooth rail 71 along the pin's longitudinal axis S. The compression spring 9' then moves the clamping means 8' with the second handle element 24' from the position P2 back to the position P1.

• Bereitstellen eines Handwerkzeugs (16);
• Befestigen der erfindungsgemäßen Handgriffverstellvorrichtung (100; 100'), insbesondere des mit dem Handgriff (10; 10') verbundenen Verstellmittels (32; 32') an einem Werkzeuglager (30; 30') des Handwerkzeugs;
• Vorzugswiese: Fixieren des Handgriffs und/oder des Verstellmittels (32; 32') am Werkzeuglager (30; 30').

A method according to the invention for assembling a hand tool (16), in particular an angle grinder, provided with the handle adjustment device (100; 100') according to the invention includes the steps:

• Providing a hand tool (16);
• Fastening the handle adjustment device (100; 100') according to the invention, in particular the adjustment means (32; 32') connected to the handle (10; 10'), to a tool bearing (30; 30') of the hand tool;
• Preferred method: Fixing the handle and/or the adjusting means (32; 32') on the tool bearing (30; 30').

The typical use of a handle adjustment device (100; 100') according to the invention, as described above using the figures as an example, typically includes loosening, adjusting and reattaching the handle to the hand tool. It preferably includes the steps

(Solve)

• Loosening the fixation of the handle (10) on the hand tool (16) by moving the clamping device (8; 8'; 8a; 8b; 8c) in the locking position (P3);
• Transferring the second handle element (24; 24') from the locking position (P3) into the engagement position (P2);
• Returning the second handle element (24; 24') from the engagement position (P2) to the disengagement position (P1), in particular with the aid of a spring element (9; 9') of the handle adjustment device;

(adjust)

• Adjusting the position of the handle (10; 10') relative to an electric hand tool (16), in particular by rotating the handle (10; 10') in the circumferential direction about a tool longitudinal axis (A, 34) of the hand tool (16) and/or by Tilting the handle (10; 10') about a tilting axis, which in particular runs perpendicular to the plane spanned by the longitudinal axis of the tool (A, 34) and the longitudinal axis of the handle (G, 21);

(reattach)

• Transferring the second handle element (24; 24') from the disengagement position (P1) to the engagement position (P2), in particular by - preferably translational - movement along the longitudinal axis of the handle (G, 21), this movement in particular causing the spring element (9; 9 ') is tensioned;
• Transferring the second handle element (24, 24'), starting from the engagement position (P2), into an engagement area in which the second handle element (24, 24') moves in the direction along the longitudinal axis of the handle (D, 21) by means of the second clamping means (6'). ) is supported on the engagement section (3, 3 ').
• Transferring the second handle element (24; 24') from the engagement position (P2) into a locking position (P3) by manually actuating the clamping means (8; 8'; 8a; 8b; 8c), whereby the second handle element (24; 24' ) is transferred in an engagement area from the engagement position relative to the first handle element (1; 1') into the locking position (P3), in which the second handle element (24; 24') is clamped between the engagement section and the tool bearing (30; 30'). is and the handle (10; 10) is fixed again on the hand tool.

Reference symbol list

• 1, 1' First handle element, axis
• 2 pen
• 3, 3' engagement section and first clamping element
• 4 leadership section
• 5 Second spring element
• 6 Second clamping element, nut
• 7 stop
• 8, 8', 8a, 8b, 8c clamping devices
• 9, 9' First spring element
• 10, 10'handle
• 11 handle shell
• 12 First end of handle
• 13 slot
• 14 Second end of handle
• 15 First Fixative
• 16 machine, electric hand tool
• 17 recess of clamping device
• 18 face of clamping device
• 19 reason for recess
• 20 cones
• 21, G longitudinal axis of the handle
• 22 mold section
• 23 lead
• 24, 24' Second handle element, core
• 25 recess
• 26 lead
• 27 guide channel
• 28 frets
• 30, 30' tool storage
• 31 Second fixative
• 32, 32' adjustment means
• 33 recess in tool storage
• A, 34 tool longitudinal axis
• 41, 41'Second end of first handle element
• 42 Axial recess of first handle element
• 43, 43'First end of first handle element
• 50 forced guidance
• 51 backdrop stone
• 52, 62, 72 base part
• 61 pivot axis
• 63 quick release lever
• 64 eccentric outer surface
• 65 stop surface
• 70 spring loaded pin
• 71 sawtooth rail
• 72 base part
• 100, 100' handle adjustment device
• P1 release position
• P2 engagement position
• P3 locking position

Claims (15)

Handle adjustment device (100; 100') for adjusting the position of a handle (10; 10') relative to an electric hand tool (16), in particular in the circumferential direction about a tool longitudinal axis (A, 34) of the hand tool (16), in particular an angle grinder, and for fixing the handle (10; 10') on a tool bearing (30; 30') of the hand tool, comprising: • an adjusting means (32; 32'), which can be stored movably on the hand tool, in particular in the circumferential direction (U) about the tool's longitudinal axis (A, 34) on the tool bearing (30; 30'), and can be connected to the hand tool ; • the handle (10; 10'), which has a first handle element (1; 1') with a first end (43; 43') facing the hand tool, which is connected to the adjusting means (32; 32'), and a Second end (41; 41') facing away from the hand tool, and a second handle element (24; 24') which extends from a disengagement position (P1) along a longitudinal handle axis (G, 21) on the first handle element (1; 1'). an engagement position (P2) and can be moved back; • wherein in the disengagement position (P1), the handle (10; 10') and the adjusting means (32; 32') are movable relative to the hand tool, in particular rotatable along the circumferential direction (U) of the tool bearing (30; 30'); • wherein, in the engagement position (P2), the second handle element (24; 24') can be moved into an engagement area in which the second handle element is located by engaging an engagement section (3; 3') of the first handle element (1; 1'). Handle element (24; 24') is supported on the engagement section (3) in the direction along the longitudinal axis of the handle (G, 21), • and wherein the handle (10) has a tensioning means (8; 8';8a;8b; 8c) that can be actuated by a user, by actuating the second Handle element (24; 24') in the engagement area opposite the first handle element (1; 1') can be moved into a locking position (P3), in which the second handle element (24; 24') is between the engagement section and the tool bearing (30; 30 ') is clamped and the handle (10; 10) is fixed to the hand tool. Handle adjustment device (100) according to claim 1, characterized in that the handle adjustment device has a first spring element (9; 9'), which is arranged in particular to return the second handle element (24) from the second position P2 to the first position P1. Handle adjustment device (100) according to claim 1 or 2,
characterized in that the first handle element (1) is an axis, the engagement section (3; 3') being a first clamping element (3; 3) spaced on the axis (1) from the second end (41) of the axis (1). ') is executed; wherein the second handle element (24; 24') is a core with a first end facing the hand tool and a second end (14) facing away from the hand tool, the axis (1; 1') extending along the longitudinal axis of the handle (G; 21) outside or is arranged within the core (24; 24'), so that the core (24; 24') is movably mounted on the axis (1) along the longitudinal axis (21) of the handle; wherein the axis (1) is connected to the adjusting means (32) in the area of the first end (43); wherein the clamping means (8) is captively and in particular rotatably attached to the second end (14) of the core (24), the clamping means (8) further comprising:
a second clamping element (6; 6';6a;6b; 6c), which is connected to the clamping means (8; 8';8a;8b; 8c), and is set up to be connected to the first clamping element (3; 3'). Axis (1) can be brought into engagement. Handle adjustment device (100) according to claim 3,
characterized in that the second clamping element (6) is designed as a nut, in particular as a hexagonal nut, which is displaceably arranged around a guide section (4) between the first position P1 and the second position P2 along the longitudinal axis of the handle, which is located at the second end (41) of the axle (1) and which has a smaller diameter than the inner diameter of the nut. Handle adjustment device (100) according to one of claims 3 or 4,
characterized in that the axis (1) has an axial recess (42) at its second end (41),
and wherein the clamping means (8) further comprises: a recess (17), in particular a blind hole, the recess (17) extending into the clamping means (8) from an end face (18) facing the axis (1), and the recess (17) being further configured to accommodate the second end (24) of the axle (1), a pin (20), the pin (20) extending from a base (19) of the recess (17), and the recess (42) of the axis (1) engaging over the pin (20). Handle adjustment device (100) according to claim 5,
characterized in that the diameter of the recess (42) is dimensioned such that the first spring element (9) is received around the pin (20) and in the recess (42) in the assembled state, and wherein the first spring element (9) is on its ends are also in contact with the axis (1) and the clamping means (8), and the spring travel of the first spring element (9) and the recess (42) are dimensioned such that starting from the clamping means (8) via the first spring element ( 9) a force acts on the axis (1). Handle adjustment device (100) according to one of claims 4 to 6,
characterized in that to transfer the handle from the engagement position (P2) to the locking position (P3), a rotation of no more than 4 or 3 thread turns is necessary. Handle adjustment device (100) according to one of claims 4 to 7,
characterized in that the nut (6) is prestressed against a stop (7) via a second spring element (5), which is arranged between the nut (6) and the clamping means (8), the stop (7) being part of the core ( 24) and is in contact with the end face (18) of the clamping device (8). Handle adjustment device (100) according to one of the preceding claims,
characterized in that the second handle element (24) has first fixing means (15) and the adjusting means (32) has complementary second fixing means (31), the first fixing means (15) and the second fixing means (31) being set up in the locking position ( P3) to exert a positive connection. Handle adjustment device (100) according to one of the preceding claims,
characterized in that the tool bearing (30) has at least one recess (33) which is set up to exert a positive connection with the first fixing means (15) in the locking position (P3). Handle adjustment device (100) according to one of the preceding claims,
characterized in that the first handle element (1) is pivotally connected to the adjusting means (32) in the area of the first end (43), such that the handle (10) with respect to its longitudinal axis (21) and the tool longitudinal axis (34) can be arranged at an angle other than 90°. Handle adjustment device (100) according to one of the preceding claims,
characterized in that the first handle element (1) further has means for limiting, in particular a pin (2) connected to the first handle element (1) which engages in an elongated hole (13) of the second handle element (24), and thereby the axial displacement of the first handle element (1) to the second handle element (24). Handle adjustment device (100) according to one of the preceding claims,
characterized in that the recess (42) and the pin (20) are designed such that the pin (20) is received by the recess (42) in the disengagement position (P2) and the locking position (P3). Electric hand tool (16), in particular an angle grinder, with a handle adjustment device (100; 100') according to one of claims 1 to 13, for adjusting the position of a handle (10; 10') relative to the electric hand tool, the electric hand tool having a tool bearing (30; 30'), on which the adjusting means (32; 32') of the handle adjustment device can be movably mounted and can be connected to the hand tool. Method for using the handle adjustment device (100; 100') according to one of claims 1 to 13, including the steps • Loosening the fixation of the handle (10) on the hand tool (16) by moving the clamping device (8; 8';8a;8b; 8c) in the locking position (P3); • Transferring the second handle element (24; 24') from the locking position (P3) to the engagement position (P2); • Returning the second handle element (24; 24') from the engagement position (P2) to the disengagement position (P1), in particular using a spring element (9; 9') of the handle adjustment device; • Adjusting the position of the handle (10; 10') relative to an electric hand tool (16), in particular by rotating the handle (10; 10') in the circumferential direction about a tool longitudinal axis (A, 34) of the hand tool (16) and/or by tilting the handle (10; 10') about a tilting axis, which in particular runs perpendicular to the plane spanned by the longitudinal axis of the tool (A, 34) and the longitudinal axis of the handle (G, 21); • Transferring the second handle element (24; 24') from the disengagement position (P1) to the engagement position (P2), in particular by - preferably translational - movement along the longitudinal axis of the handle (G, 21), this movement in particular causing the spring element (9; 9') is tensioned; • Transferring the second handle element (24; 24') from the engagement position (P2) into a locking position (P3) by manually actuating the clamping means (8; 8';8a;8b; 8c), whereby the second handle element (24; 24 ') is transferred within the engagement area from the engagement position (P2) relative to the first handle element (1; 1') into the locking position (P3), in which the second handle element (24; 24') is between the engagement section and the tool bearing (30; 30') is clamped and the handle (10; 10) is fixed again on the hand tool.

Images