WO2019206874A1

WO2019206874A1 - Hand-held power tool, in particular gardening tool

Info

Publication number: WO2019206874A1
Application number: PCT/EP2019/060319
Authority: WO
Inventors: Attila Nagy; Robert Soltesz; David Sandor Hadas
Original assignee: Robert Bosch Gmbh
Priority date: 2018-04-22
Filing date: 2019-04-23
Publication date: 2019-10-31
Also published as: CN112004402A; CN112004402B; DE102018206176A1

Abstract

The invention relates to a hand-held power tool, preferably gardening tool, in particular grass trimmer (10) or brushcutter, comprising a handle unit (12) and a treatment unit (38), connected to one another via a distance unit (32), in particular an extensible distance unit, preferably a telescopic unit (34). According to the invention, the treatment unit (38) is designed as a unit that can rotate relative to the distance unit (32) about two axes (620, 622), in particular two axes that run orthogonally to one another, by means of a common release element (613).

Description

description

title

Hand tool machine, in particular gardening tool

State of the art

There are already known hand tool machines according to the preamble of claim 1.

Disclosure of the invention

The invention relates to a hand tool, preferably gardening equipment, in particular grass trimmers or brushcutters, comprising a handle unit and a processing unit, which are connected to each other via a distance unit, in particular an extendable distance unit, preferably a telescope unit.

It is proposed that the machining unit are designed to be rotatable relative to the spacer unit by means of a common triggering element about two axes, in particular two orthogonally extending axes. This serves on the one hand to realize a height adjustment of the handle unit, in particular by means of a pivoting function of the spacer unit relative to the machining unit, preferably by pivoting about a pivot axis transverse to the longitudinal axis of the spacer unit. On the other hand, an edge cutting function can thereby be provided by rotation of the processing unit relative to the spacer unit, in particular about the longitudinal axis of the spacer unit. In this way, differently advantageous pivoting angles of the handle unit or spacer unit relative to the machining plane can be set, for example, in order to switch between a horizontal section configuration, an edge cutting configuration and a flat section configuration. As this with only one actuator this is on the one hand ergonomic, on the other hand fast, third clearly arranged and fourthly intuitive. The Flandhabung is thus simplified.

It is also proposed that the triggering element is part of a triggering unit, comprising a housing, in particular for fixing to the machining unit and / or integrally formed therewith, in particular having two housing shells; a spring in particular for biasing and / or resetting the clutch and / or the triggering element; a clutch, in particular for joint engagement and disengagement of the interaction elements, preferably both a Getriebezahnverrastung and a bolt lock; a hub, in particular, this also has a gear toothing and / or takes on a distance unit connector or secures this axially and / or allows rotation; a connector, in particular the distance unit connector or also called end stop; sometimes a securing means for fixing at least two of these components to each other. This ensures functionality with just a few components.

It is proposed that the triggering element is intended to trigger both a transmission latching, in particular Steckverzahnungsverrastung, as well as a bolt lock, or to lock them again. In particular, the bolt extends axially beyond the gear lock. Gear lock and bolt are preferably arranged concentrically to each other, wherein the bolt is arranged radially within the gear lock. Thus, the integration of the two functions can be realized compactly on a component.

In addition, it is proposed that corresponding stop elements are arranged on the hub and on the connector, in particular in order to predetermine a rotational stop at least at an angle of 0 ° and 180 ° and / or 90 ° and 270 °.

Furthermore, it is proposed that the triggering element is designed as a foot pedal and / or that the triggering element has two function pectoralgrams. points, in particular a pan and a turn pictogram. By means of the foot pedal, a comfortable release is also possible when standing by a user. Furthermore, with the foot also like a higher force can be exercised. It can be said that a relative rotation between a fixation of the processing unit with the foot on the ground and the hand on the handle by the large movement space can be comfortably met. An elaborate encompassing or working only with the relatively short arms of the user can be avoided. In addition, you do not make your fingers dirty with clippings. It saves time, it is convenient and intuitive.

It is proposed that the processing unit is formed relative to the distance unit by means of a common triggering element at least about an axis rotatable and telescopically along an axis. Thus, two adjustment functions can be realized with only one trigger element, here for example different pivot angle of the distance unit relative to a processing surface and at the same time the length of the telescope unit and / or a folding position of the handle unit. Thus, the power tool can be easily adjusted to, for example, editing confined spaces, such as turf cutting under a porch swing or the like, and then back again. This is comfortable and comfortable. Even a compact storage of the power tool is easily possible.

It is proposed that the machining unit be rotatable relative to the spacer unit and / or handle unit by means of a common trigger element at least two axles, preferably rotatable about two mutually orthogonal axes, and telescopically along an axis, in particular by two axes rotatable, preferably by two orthogonal to each other extending axes rotatable, and is formed telescopically along an axis. This, too, advantageously provides the advantages described above. It should be noted that processing unit here means, for example, a cutting head. By spacer unit is meant the element that connects the processing unit or cutting head to the handle unit. The spacer unit is indirectly or directly on the processing unit or on

Cutting head arranged. It is proposed that the machining unit be rotatable relative to the spacer unit and / or handle unit by means of a common trigger element at least about one axis, in particular rotatable about two axes, particularly preferably about two mutually orthogonal axes, and / or telescopically formed along an axis, and by means of the common triggering element, a pivoting unit of the handle unit for pivoting the handles can be triggered. Under a pivoting of the handles should be understood in particular pivoting at least two handles to each other. Thus, two, three, four or possibly even more functions can be provided by means of a triggering element. The operation is intuitive and simple, the speed for adjusting device functions immense.

It is proposed that the trigger element is a foot pedal or at least one element controlled by a foot pedal. Alternatively, however, a manual release is also conceivable. The foot pedal has, as already mentioned, the advantage that you do not get dirty fingers and can use the movement and / or freedom of rotation of the upper body relative to the foot to perform the adjustments easily and comfortably. An elaborate encompassing or turning around the hand tool, so that you get to grasp the processing unit is avoided.

It is proposed that the power tool has a V-shaped handle unit; and / or a center of gravity of the power tool is arranged along the longitudinal axis of a spacer unit and / or a main pipe; and / or the center of gravity comes to rest in the region of a pivot unit of the handle unit; and / or a processing unit is arranged on one side of the longitudinal axis of a spacer unit and / or a main pipe and the handle unit or at least one handle on the other side; and / or that a moment equilibrium exists between the processing unit and the handle unit about a longitudinal axis of the spacer unit and / or the main pipe. drawing

Further advantages emerge from the following description of the drawing. The drawing, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.

Show it:

Fig. 1 A Flandwerkzeugmaschine invention, in the form of a garden implement, here in the form of a grass trimmer or brushcutter, in a front view.

2 shows the trimmer in three views, each in a Horizontalschnittkonfigu- ration,

3 shows the trimmer in three views,

4 shows the trimmer in three arrangements, or in a horizontal section configuration, in an edge trimming configuration and a flat section configuration,

5 shows two views of a pivoting and rotating device in an exploded view,

6 shows an adjusting device for telescoping or flöhenverstellung the grass trimmer in an exploded view,

7 shows a detail from FIG. 6 in different views,

Fig. 8 shows the grass trimmer in a compact storage or transport configuration

Fig. 9 shows an alternative pan, rotary, and height adjustment.

FIG. 1 shows a hand-held power tool in the form of a plant cutting device or a garden implement, here in the form of a grass trimmer 10 or brushcutter. The grass trimmer 10 or brushcutter has a handle unit 12. The handle unit 12 includes at least a first handle 14. Further, the handle unit 12 includes a second handle 16. The first handle 14 is connected to the second handle 16 via a connecting unit 18. The second Handle 16 is displaceable or foldable formed to the first handle 14. The second handle 16 can be pivoted about a pivot unit 20 relative to the first handle 14 or relative to a main tube 22. The pivoting angle is an acute angle 24. As a result, the handle unit 12 assumes a V-shaped position, at least in one working position. The pivoting unit 20 constitutes a part of the connecting unit 18 or the handle unit 12. The pivoting unit 20 can be released via the triggering element 26. This can be initiated by a user's folding and / or folding. The handle unit 12 is attached to the main tube 22 or a linkage of the grass trimmer 10. The handle unit 12 may also form part of this main tube 22 or linkage. The second handle 16 is connected via a pipe 28 to the pivot unit 20. The tube 28 represents a part of the handle unit 12 or the connecting unit 18. The main tube 22 and the tube 28 are each at least partially surrounded by connecting or stiffening elements 30. These can be in the respective handles 14, 16 pass over or integrally formed with the handles 14,16. They stiffen the position of the handles 14, 16. They surround at least partially the main tube 22 and the tube 28th

Via a spacer unit 32 or telescopic unit 34, in this case a further tube 36, in particular a tube 36 which can be telescoped relative to the main tube 22, the handle unit 12 is connected to a processing unit 38. The spacer unit 32 connects the handle unit 12 and the processing unit 38 with each other and separates them from each other. The spacer unit 32 is designed to be displaceable relative to the handle unit 12 or the main tube 22. By actuating an adjustment device 40, the distance unit 32 is telescopic. For example, interlocking elements, not shown here (eg latching means), engage in corresponding interlocking elements on the spacer unit 32. These are brought out of or into engagement via the adjusting device 40. Thus, the lawn trimmer 10 or brushcutter can be adapted to different heights and / or positions or stow or transport compact. The processing unit 38 includes a cutting head 42. The cutting head 42 drives the cutter a knife (not shown here), a cutting disc with, for example, movable cutting knives (hybrid brush cutter / trimmer - also not shown here), or the grass trimmer 10 a cutting thread 44 at. Due to the high rotational speed of the cutting line 44, this is streamlined by centrifugal forces and can thereby cut or cut a clippings, especially grass. Alternatively, however, the processing unit 38 may also be a hedge trimmer attachment, a chainsaw attachment, a pruner attachment, a spray attachment or the like. These can optionally be telescopically or with a fixed distance to the handle unit 12 or to the main pipe 22. In the present example, the cutting head 42 comprises a drive unit 46 and a cutting unit 48. The drive unit 46 is formed here by a motor, in particular an electric motor. The cutting unit 48 comprises a coil 50 on which the cutting thread 44 can be sorted or wound up. If the drive unit 46 rotatably drives the spool 50 or the cutting thread 44 projecting out of the spool 50, grass or turf or shrubbery can be cut or trimmed with the cutting thread 44 in a known manner. By means of the spacer unit 32, cuts can be carried out conveniently in the grass trimmer 10 or brushcutter, while the user stands or runs and, for example, pivots the grass trimmer 10 over a lawn; Similarly, work on hedges or trees, then typically with the aforementioned intentions or other appropriate intentions, made. The drive unit 46 is exemplified by a battery (not shown here) supplied with energy. The rechargeable battery is arranged at the end of the main tube 22 spaced from the cutting head 42 on a rechargeable battery receptacle 52, which here serves for the improved distribution of the balance or the improvement of the ergonomics of the grass trimmer 10. The rechargeable battery represents, as it were, a counterweight to the motor or the cutting head 42. As a result, the center of gravity of the grass trimmer can be displaced into the region 53 of the handle unit 12 or into the region of the swiveling unit 20 or the connecting unit 18. In principle, the battery can also be arranged at a different location. To activate the motor, a switch 54, in particular a gas trigger switch can be actuated by a user. Switching and / or control signals and / or the energy transport between handle unit 12 and cutting head 42 take place here by way of example via cables, not shown, which can be routed within the main tube 22 and the spacer unit 32. Of course, the gardening tool may have a control or regulation, which takes over the control of the motor starting at least from signals of the switch 54 and / or monitors the battery or engine condition and / or the like, controls or regulates. Likewise, in such gardening tools, the motor can also be arranged at a different location, for example at the end of the main pipe 22 spaced from the cutting head 42 (ie in the area of the battery interface 52 shown here). This can supply the cutting head 42, for example via a in the main pipe 22 and the spacer unit 32 and the other tube 36 extending power transmission shaft, with drive energy.

For better clarity and for orientation also in the other drawings, a coordinate system 56 is shown. Based on the cutting head 42 or grass trimmer 10 shown here in its horizontal section configuration 58, the cutting unit 48 or the coil 50 and / or the cutting thread 44 rotate about the axis of rotation 60 or the Y-axis. A horizontal section plane is spanned by the X and Z axes. This is also the plane in which the cutting line 44 rotates. The Z-axis which extends out of the viewing plane of the drawing also defines a main cutting direction 62 for better explanation. This main cutting direction 62 exemplarily defines the straight-out gear of a user of the grass trimmer 10.

FIG. 2 shows the grass trimmer 10 from FIG. 1 in three views a), b), c), respectively in the horizontal section configuration 58. This is for carrying out horizontal cuts, ie cuts substantially parallel to the working surface or plane or the ground intended. In the view a) of the grass trimmer 10 is at least partially shown in a side view. The view b) shows the grass trimmer 10 in a slightly forward tilted front view. The view c) shows the grass trimmer 10 in a plan view. In this view, the coordinate system 56 is also shown analogous to Figure 1, as well as the main cutting direction 62 shown in the z-axis direction. Reference signs are essentially not reassigned for identical parts from FIG. 1, which also applies to the other figures. In addition, however, certain angles, axes, distances and directions are drawn. In principle, it should be noted that in the following, longitudinal axes of tubes, handles or similar, substantially elongate components, at least substantially as along the center axis or center axis of the tubes, handles or similar, substantially elongate components to be understood. Thus, a longitudinal axis substantially corresponds to the center axis along the main extension direction of the respective component. Along of the main tube 22, or along the distance unit 32, the telescope unit 34 or the further tube 36, extends a longitudinal axis 100. A longitudinal axis 102 extends along the center axis of the tube 28 to which the second handle 16 is attached. A pivoting angle 80 between the longitudinal axis 100 and a machining plane 82 is approximately 15-65 °, here about 48 °. In other advantageous configurations, it can be 36 ° or 24 °. An angle 84 between the longitudinal axes 100 and 102 of the main tube 22 and the further tube 36 in the view b) is about 45-75 °, in particular about 60 °. Starting from a plane 85 spanned by the Y and Z axes (see view c)), the bisector 87 of the angle 84 comes to lie in a parallel plane 86 to the plane 85. The bisector 87 or parallel plane 86 intersects the pivot unit 20 and the trigger element 26 in the center. The handle unit 12 or pivot unit 20 is aligned in a V-shape. Right and left of the bisector 87 extend the legs (main tube 22 and tube 28) of the V, on which the handles 14, 16 are arranged. In the top view on the right, a user is also depicted with the trimmer 10 or brushcutter in a position that is customary for use. The user's gaze is oriented in Z-axis. The body center of the user is in the region of the parallel plane 86, or the bisector 87 of the handle unit 12. The arrow 88 symbolizes a preferential running direction of the user along a preferential running axis 90. The preferential running axis 90 is aligned parallel to the Z-axis and has an offset 92. The same applies to the parallel plane 86 (in which the bisecting line 87 comes to rest) to the plane 85. The offset 92 is variable depending on a Teleskopierstellung the telescope unit 34. At the telescope unit 34 and the other tube also positive locking elements 94 are used in this view, which serve the locking during telescoping visible. The offset 92 is slightly more than half the shoulder width 96 of a user. This is in other words the offset 92 between the processing unit 38 and the cutting head 42, in particular the axis of rotation 60 of the cutting unit 48 and a center of the handle unit 12 and the pivot unit 20. Thus, a user can walk comfortably along, for example, a wall while the cutting head 42 is displaced to the left. The angle 98 between the parallel plane 86 or the preferential running axis 90 and the at least projected longitudinal axis 100 of the main tube 22 is approximately 45 °. Of course he can also vary. FIG. 3 shows the grass trimmer 10 in three views a), b), c) with additionally marked handle levels 101, 103 and a plane 104 which can be designated as a handle pivot plane. Reference numerals are essentially not allocated to identical parts from FIG. 1 analogously to FIG. The longitudinal axis 100 of the main tube 22, or the spacer unit 32, and the further tube 36, on which the first handle 14 is arranged; and the longitudinal axis 102 of the tube 28, on which the second handle 16 is arranged, tension the plane 104. Along this level 104 or in an at least parallel plane and the tube 28 is formed pivotable or hinged. It is possible to pivot or fold between a working position and a storage or transport position (see FIG. 8). The swept angle is pointed. In the unfolded state, the angle 84 is approximately 60 °, in the folded state less than 20 °, (according to Figure 8 around 10 °). In principle, additional pivoting or folding angles are conceivable in which the pivoting unit 20 is locked. Thereby, the grip distance of the handles 14, 16 could be adapted to different people, for example, depending on the shoulder width 96 of the user or a comfortable hand position or the like depending on different sensitivities.

A longitudinal axis 106 extending through the first handle 14 and a longitudinal axis 108 extending through the second handle 16 are not arranged normal to the plane 104. So you are not parallel. Rather, the handles 14, 16 with their respective longitudinal axes 106, 108 inclined to the plane 104, in particular each two orthogonal to each other extending longitudinal axes 100, 102, 116, 118 are formed inclined. The longitudinal axes 100, 102 come to rest within the plane 104. On the one hand, the handles 14, 16 about the longitudinal axes 100 and 102 are inclined to each other. The angle of inclination 110 or 112 between the plane 104 and the longitudinal axes 106, 108 of the respective handle 14, 16 is approximately 60 ° -85 °, in particular approximately 75 °. This angle of inclination 110, 112 corresponds to an angle of inclination about the longitudinal axes 100 and 102. Further, the handles 14, 16 are inclined to a normal to the respective longitudinal axis 100, 102 of the main tube 22 and the tube 28 and within the plane 104 extending longitudinal axes 116th , 118 (could also be used as auxiliary or orientation be designated longitudinal axis). These angles 120, 122 are also each about 60 ° -85 °, in particular about 75 °. Salopp formulated are the handles 14, 16 based on the free handle ends 15, 17 so on the one hand inclined to each other and / (or) on the other hand in the direction of the processing unit 38 or the pivot unit 20 inclined. In other words, the free handle ends 15, 17 are in particular x-shaped / v-shaped and / or the non-free handle ends 19, 21 are connected in a v-shape by means of the connection unit 18, in particular the pivot unit 20. This achieves pleasant ergonomics for the user. As a reader of this patent application or as a game of thought lay your hands about shoulder width or a little closer in the lap or on the thighs. You find that this corresponds to a relaxed orientation of the hands - something like this trimmer lawn 10 or brushcutter gripped. This is precisely the advantage over so-called Kuhhornlenkern, which are held in principle higher and wider and whose handle longitudinal axes are normally aligned parallel to each other. In addition, the handles 14, 16 are typically further spaced at the Kuhhorn handlebar.

FIG. 4 shows the grass trimmer 10 in three arrangements a), b), c). Left (view a)) in the horizontal section configuration 400 (see also Fig. 1, 2 and 3). Center (view b)) in an edge trimming configuration 402. Right (view c)) in a flat cut configuration 404, that is, a configuration in which the space is upwardly limited, for example, to objects such as tables, a porch swing, or the like, To perform horizontal cuts. Reference signs are essentially omitted for identical parts from the previous figures. To achieve the edge trimming configuration, a user or user actuates pedal 612 in the direction of arrow 406, as described in greater detail in FIG. 5, and then typically rotates handle assembly 12 180 ° about longitudinal axis 100 of main tube 22 and spacer 32, respectively, in the direction of arrow 408 , As a result, the handle unit 12 rotates and its handles 14, 16 point to the floor, for example. When the user now transfers the handle unit 12 to its starting position or use position, the processing unit 38 or the cutting head 42 is aligned or oriented in such a way that it can be used for edge cutting - in the edge cutting configuration 402 according to view b). The cutting line 44 can now in rotate a vertically aligned plane. The support wheel 410 or the Schnittdistanzeinheit 412 spaced the coil 50 sufficiently from the ground (not shown here), so that an ideal edge trimming or cutting can be done and the cutting line 44, alternatively the cutting blade (the brush cutter), not on the Dimensions are worn. Thus, a sufficiently free length of the cutting line 44 is ensured to achieve a high cutting thread speed at the end and consequently a high quality of cut. The cutting distance unit 412 and the support wheel 410 also serve to guide and the low-friction rolling over the ground. However, the jockey wheel 410 may also serve in the horizontal cut configuration 400 or flat cut configuration 404 along an edge, wall, or other object (not shown), such as a tree, for ideal cutting distance of the cutting head 42 from the article. This results in less wear, especially the tool used (cutting line 44 or knife brush cutter) and the operation is simplified or more intuitive. The flat-section configuration 404 can also be achieved by operating the pedal 612 and pivoting the main tube 22 or the handle unit 12 relative to the processing unit 38 or the cutting head 42 in the direction of the arrow 416. The main tube 22 and the handle unit 12 thereby come closer to the ground, while the cutting line 44 can still rotate in a horizontal plane. The angle 80, not shown here, between the longitudinal axis 100 of the main tube 22 and the working plane 82 (see also Fig. 2, view a) is approximately 36 ° in the edge cutting configuration 402 and approximately 24 ° in the flat section configuration 404, but may also assume other values , The pedal 612 is pivoted about 20 ° when operating.

Figure 5 shows a pivoting and rotating device 600 in a first view a) and a rear view to b), respectively in an exploded view. The main components shown here are: the housing 602, comprising two housing shells 604 and 606; a spring 608; a coupling 610; a pedal 612 as a trigger element; a hub 614; a connector 616, which may also be referred to as a distance unit connector or end stop; and a securing means 618. The components are arranged substantially along a major axis 620 (pivot axis). In particular, orthogonal to this, another axis 622 (axis of rotation) extends. This further axis 622 corresponds in the present case The main axis 620 and the further axis 622 define the rotational degrees of freedom of the pivoting and rotating device 600 and the processing unit 38 relative to the handle unit 12 and the spacer unit 32, respectively. The processing unit 38 is provided around the main axis 620 to pivot (height adjustment by pivoting, or adjustment of the angle 80 on the edge cutting configuration 402 see Fig. 4, View b) - here about 36 °; or the flat-section configuration 404, while angle 80 is approximately 24 °, cf. Fig. 4 c). Furthermore, at the same time or one after the other, in each case triggered by the common triggering element, namely the foot pedal 612, the processing unit 38 is rotated about the further axis 622 (to achieve edge cutting function edge cutting configuration 402 cf. FIG. 4, view b).

Starting from FIG. 5, view a) and b), a plurality of ribs 626, which run parallel to the main axis 620, are arranged on the first housing shell 604 starting from a wall 624. These ribs 626 correspond to recesses 628 in the coupling 610. They serve to rotationally inhibit the coupling 610 relative to the housing 602; but they allow an axial displacement of the coupling 610 relative to the housing 602. The coupling 610 has inclined surfaces 630, which correspond to inclined surfaces 632 of the pedal 612 or form pairs of inclined surfaces. By operating the pedal 612 in the direction of the arrow 634, the inclined surfaces 632 are rotated over the arm 636 relative to the other inclined surfaces 630 arranged on the coupling 610. As a result, the coupling displaces axially in the direction of the return force of the spring 608 Housing shell 604 or its wall 624.

Teeth 638, in particular teeth 638 of a spline, arranged on the coupling 610 are brought out of engagement with corresponding teeth 640 on the hub 614. Consequently, pivoting of the hub 614 about the major axis and relative to the housing 602 is possible as long as the pairs of teeth 638 and 640 are disengaged. The gift can be limited, for example, by the contour of the housing opening 642. The hub 614 is rotatable relative to the pedal 612 and the housing shell 606 formed around the main axis 620 (here sliding bearing). For this, the pedal surface 644 touches the hub surface 646 and the housing surface 648 the hub surface 650 (axially relative to the major axis 620). To facilitate rotation of the processing unit 38, in particular to enable the edge trimming function of the trimmer 10 or brushcutter, the hub 614 is provided to rotatably receive the connector 616 about the axis. The axially displaceable coupling 610 has, in addition to the teeth 638, a bolt 652. The bolt 652 is axially displaceable to the hub 614 guided by the sliding surface 654. It is intended to engage in the recess 656 of the connector to prevent rotation of the connector 616 about the axis 622, optionally in a 0 ° and a 180 ° position. If the pedal 612 displaces the coupling 610 axially against the spring force in the direction of the housing shell 604, both the splines of the teeth 638, 640 of the coupling 610 and hub 614 and the connection of the bolt 652 and the recess 656 are released. As a result, the machining unit can be pivoted and rotated relative to the spacer unit by means of a triggering element (in this case the pedal 612) about two axes (620, 622), in particular two orthogonally extending axes (620, 622). Alternatively, other triggering elements are conceivable. The connector 616 is axially secured in the direction of the further axis 622 against a displacement relative to the hub 614 or relative to the main axis 620 with the securing means 618. The securing means 618 is a snap ring which comes to lie in the groove 658 of the connector 616 and is supported on the surface 660 of the hub 614.

As seen in the lower view c), where the connector 616 can be seen in two (180 ° rotated) and the hub 614 (right) in a detail view, the connector has latching means 662 (here in the form of a longitudinal groove) and recesses 664 (Which are at least partially provided for force and / or positive connection with the spacer unit 32) are on. Furthermore, the connector 616 has two further stop surfaces 666, 668, which correspond to stop surfaces 670 and 672 on the hub 614. As a result, a stop for the 0 ° and the 180 ° position is provided when rotating the processing unit 38 relative to the spacer unit 32 or the handle unit 12 about the further axis 622 or the longitudinal axis 100, which makes the adjustment intuitive, simple and secure , A locking of the rotating and pivoting mechanism is only possible if the pairs of teeth 638, 640 and the bolt 652 and the recess 656 are in the mutually corresponding orientation. In addition to other possibilities is in principle but also conceivable to provide a further recess, for example in the 90 ° and 270 ° of the connector 616 and / or possibly a frictional connection instead of the spline or bolt to allow an even greater variety of adjustment positions when pivoting and turning the power tool , It is also conceivable that the triggering element triggers, for example via a cable, a linkage, a wedge or the like, the telescopic adjustment of the distance unit. (See Fig. 9). Thus, the height adjustment (distance from the handle unit to the processing unit), the pivoting function and the rotation function could be provided with only one trigger element. This triggering element could for example also be arranged on the handle unit, the spacer unit or the processing unit. Alternatively, it is also conceivable that with only one triggering element acting between the processing unit and the distance unit, the height adjustment along the longitudinal axis of the distance unit (ie the adjustment of the distance between the handle unit and processing unit) are combined with the pivot function and / or the rotation function. It is also conceivable that the pivoting function be combined with the height adjustment function by a common triggering element.

Thus, the processing unit 38 relative to the distance unit 32 by means of a (common) triggering element (here the foot pedal 612, but in principle any other common trigger element) about two axes (namely, the main axis 620 and the further axis 622), in particular two orthogonal to each other Axes, rotatable (to each other) is formed. To realize a height adjustment of the handle unit 12, in particular by means of a pivoting function by the angle 80 of the spacer unit 32 relative to the processing unit 38, (preferably by pivoting about a pivot axis here the further axis 622 transverse to the longitudinal axis 100 of the spacer unit 32 and to realize a Kantenschneidkonfiguration 402 by Rotation of the processing unit 38 relative to the spacer unit 32, in particular about the longitudinal axis 100 of the spacer unit 32. The trigger element (here the foot pedal 612) is provided both a Getriebezahnverrastung (or splines of the teeth 638, 340) and a Bolzenverrastung (of the bolt 652 in the recess 656) at least to solve, in particular also to lock again.

FIG. 6 shows the grass trimmer 10 or thread cutter with the pivoting unit 20 for the V-shaped alignment of the handle unit 12 and the adjusting device 40 for telescoping or flea adjustment in an exploded view. Similar parts of Figure 1 or the other figures are not described again.

FIG. 7 shows a section 500 from FIG. 6 in various views. In view a), the adjusting device 40 and the Flöhenverstellmechanismus is shown in a sectional view. The trigger member 502 is spring biased and is displaced by pressure applied thereto in the direction of the arrow 504. As a result, a latching means 506 connected at least to the triggering element 502 lifts from a corresponding positive-fit element 94 on the tube 36. The tube can now be displaced in the direction of the arrow 508 relative to the main tube 22.

View b) of FIG. 7, as well as the further views c), d) and e), show components of the pivoting unit 20. The clamping tubes 510, 512 are fixed to the main tube 22. On the tube 28, a clamping plate 514 is fixed. They each have a recess through which the common pivot unit rotation axis 518 extends. Furthermore, the clamping plates 510, 512 and the clamping plate 514 have corresponding stop elements 520, 522, each offset by 180 °. These serve as an end stop in the open V-shaped position of the handle unit 12. The trigger element 26 has clamping means 530 which correspond to form-fit elements 524, 526, 528 on the clamping plates 510, 512, 514. As a result, the adjusting device 40 can be locked in two positions (namely, once the V-shaped handle, pivot or connection arrangement position according to, for example, FIG. 1 or the folded handle, pivot or connection arrangement position according to FIG It is particularly important, however, that the clamping means - one of which is to be seen in the enlargement X of the section BB in view d), have a phase 532 at its distal end. This causes in the v-shaped open position jamming between the clamping means 530 with Thereby, the handle unit 12 or the connecting unit 18, or the pivot unit 20, the game is taken in the V-shaped unfolded configuration. The pivotable handle unit 12 is thus stored as free of play in the working position, which increases the comfort and safety.

FIG. 8 shows the grass trimmer 10 in a compact storage or transport configuration. The tube 36 is completely inserted relative to the main tube 22. The handle unit 12, or connecting or pivoting unit 18, 20 is folded together. The other elements should be self-explanatory in conjunction with the previous figures.

FIG. 9 shows, as already indicated in the description of FIG. 5, an alternative swiveling, turning and height adjusting device 700 in which all three or even a fourth adjustment (additionally the swivel angle of the handle unit 12) is triggered by means of the foot pedal 712. A displacement of the foot pedal 712 causes an axial displacement of the additional clutch 704 along the main axis 720 to the left. Due to the contour 705, there is an axial displacement of the rod 706, so that their form-locking elements 707 are used out of engagement 708 with the tube 736, wherein the tube 736 may be a tube 736 of the spacer unit 32 shown in FIG. The rod 706 can at the same time solve or release an alternative height adjustment mechanism 740 and / or a pivot mechanism, not shown here, of the handle unit 12, for example, from FIG. Now, a rotation of the tube 736 about its longitudinal axis 100, for example, to enable the edge cutting configuration 402 is possible. Further, the height adjustment mechanism 740 is released. In addition, a pivoting of the tube 736 about the main axis 720 is possible because the clutch 710 has been disengaged.

Claims

claims

1. Hand tool, preferably gardening equipment, in particular grass trimmer (10) or brushcutter, comprising a handle unit (12) and a processing unit (38), which via a spacer unit (32), in particular an extendable distance unit (32), preferably a telescopic unit (34) , are interconnected, characterized in that the processing unit (38) relative to the spacer unit (34) by means of a common triggering element (613) about two axes (620, 622), in particular two orthogonal axes extending, are rotatable to each other.

2. Hand tool according to Claim 1, characterized in that the triggering element (613) is part of a trip unit (615), comprising a housing (602), in particular comprising two housing shells (604, 606), a spring (608), a clutch ( 610), a hub (614), a connector (616) and a securing means (618).

3. Hand tool according to Claim 1 or 2, characterized in that the trigger element (613) is provided both a gear lock (638, 646), in particular Steckverzahnungsverrastung, as well as a Bolzenverrastung (652, 656) trigger.

4. Hand tool according to one of the preceding claims,

characterized in that on a hub (614) and on a connector (616) corresponding stop elements (666, 668, 670, 672) are arranged, in particular a rotational stop at least at an angle of 0 ° and 180 ° and / or 90 ° and 270 °.

5. Hand tool according to one of the preceding claims,

characterized in that the triggering element (613) is designed as a foot pedal (612) and / or that the triggering element (613) has two function pictograms (611), in particular a pan and a pivot pictogram.

6. Hand tool according to one of the preceding claims, characterized in that the machining unit (38) relative to the spacer unit (32) by means of a common trigger element (613) at least about an axis (620) rotatable and along an axis (100, 622) telesko- is formed pierbar.

7. Hand tool according to one of the preceding claims,

characterized in that the processing unit (38) relative to the spacer unit (32) and / or handle unit (12) by means of a common trigger element (613) at least about two axes (720, 100, 722) rotatable, preferably about two mutually orthogonal axes ( 720, 100, 722) rotatable, and along an axis (100, 722) is telescopic.

8. Hand tool according to one of the preceding claims,

characterized in that the processing unit (38) relative to the spacer unit (32) and / or handle unit (12) by means of a common trigger element (613) at least about an axis (100, 620, 622, 720, 722) rotatable, in particular about two axes (100, 620, 622, 720, 722) rotatable, particularly preferably around two mutually orthogonal axes (100,

620, 622, 720, 722) rotatable, and / or along an axis (100, 722) is telescopic, and by means of the common trigger element (613) a pivot unit (20) of the handle unit (12) for pivoting the handles (14, 16), in particular relative to the spacer unit (32) or the handles (14, 16) relative to each other, can be triggered.

9. Hand tool according to at least one of the preceding claims, characterized in that the triggering element (613) is a foot pedal (612) or a manual release or at least one of the foot pedal (612) o- the manual release controlled element.