Arrangement with a hand-held implement and with a support device and hand-held implement

Abstract

Arrangement with a hand-held working device and with a support device, wherein the working device has a housing (2, 62, 72, 82) in which a drive unit of the working device is arranged, and on which at least one handle (3, 73, 83) for guiding the working device during operation is arranged, wherein the support device (20) is provided for supporting the working device during operation and has a holder (21) to be carried by an operator (19), wherein the support device (20) comprises a connecting device (9, 59) which is held at a first fastening point (30) on the holder (21) and at a second fastening point (31) on the working device, wherein the connecting device (9, 59) is pivotally mounted at the second fastening point (31) about at least one pivot axis (27, 29), and wherein the connecting device (9,59) supports the implement in the working position (10) to the rear relative to the operator (19) and prevents a rearward movement of the implement, wherein the center of gravity (17) of the implement and the first fastening point (30) in the working position (10) of the implement have a distance (a, c) from each other measured in the horizontal direction and in the lateral direction relative to the operator (19), and wherein the holder (21) at the first fastening point (30) has means for at least partially supporting the tilting moment exerted by the weight force (F) of the implement at the first fastening point (30) due to the lateral distance (a, c), characterized in that the connecting device (9, 59) comprises a connecting pin (33, 63) which, in the working position (10), projects horizontally from the holder (21) and laterally relative to the operator (19).

Description

[0001] The invention relates to an arrangement with a hand-held working device and a support device of the type specified in the preamble of claim 1 and to a hand-held working device of the type specified in the preamble of claim 18.

[0002] DE 10 2007 048 104 A1 discloses a hand-held tool, namely a brush cutter, with a belt assembly. The brush cutter has a hook designed to be attached to the belt assembly. The hook forms a flexible connection with the eyelet, which can absorb the weight of the tool. During operation, the tool rests laterally on the support plate of the belt assembly.

[0003] US Pat. No. 5,620,121 A discloses a brush cutter with a support device comprising a detachable ball joint. The brush cutter rests on the ball joint.

[0004] US 2014 / 0 140 861 A1 discloses a hand-held blower that is connected to a backpack-mounted battery via a connecting cable.

[0005] The invention is based on the object of creating an arrangement comprising a hand-held implement and a support device that enables ergonomic and effortless operation of the implement. A further object of the invention is to create a hand-held implement that enables effortless operation.

[0006] With regard to the arrangement with a hand-held implement and with a support device, the object is achieved by an arrangement having the features of claim 1. With regard to the hand-held implement, the object is achieved by a hand-held implement having the features of claim 18.

[0007] The arrangement has a support device for supporting the work tool during operation. A connecting device is provided which is held at a first fastening point on a holder to be carried by the operator and at a second fastening point on the work tool. At the second fastening point, the connecting device is pivotally mounted about at least one pivot axis. It is provided that the center of gravity of the work tool and the first fastening point are at a distance from one another, measured horizontally and, with respect to the operator, in the working position of the work tool. The first fastening point is therefore located next to the center of gravity of the work tool with respect to the operator. The holder has means at the first fastening point for at least partially supporting the tipping moment which the weight of the work tool exerts at the first fastening point due to the lateral distance.The bracket therefore not only absorbs the weight force, but also the tilting moment generated by the weight force at the first attachment point. The tilting moment is not absorbed by a support plate or similar device on which the implement rests, but rather by the first attachment point itself. Because the tilting moment is at least partially absorbed by the bracket at the first attachment point, this tilting moment only needs to be partially absorbed by the operator during operation. This allows the implement to be operated with minimal effort, enabling fatigue-free operation.

[0008] The lateral distance between the center of gravity and the first attachment point is advantageously between approximately 7 cm and approximately 11 cm. A distance of approximately 10 cm has proven to be particularly advantageous. This allows the implement to hang largely freely at the first attachment point without coming into lateral contact with the operator. At the same time, the tipping moment to be absorbed by the holder is comparatively small, allowing a simple design of the holder. It can be advantageous if the position of the second attachment point is adjustable. For this purpose, the length, shape and / or orientation of the connecting device can advantageously be adjustable. However, a structurally fixed position of the second attachment point relative to the first attachment point can also be advantageous. The position of the second attachment point on the implement and / or the position of the first attachment point on the holder can also be adjustable.

[0009] The second fastening point is preferably arranged within the housing. In order to fully absorb the tipping moment at the first fastening point, it is advantageously provided that the second fastening point and the center of gravity of the implement lie in a common vertical plane. Particularly advantageously, the center of gravity lies approximately vertically below the second fastening point. As a result, the implement is held balanced at the second fastening point both laterally and in a forward direction and, starting from this balanced position, can be pivoted by the operator with very little effort. The weight of the implement is fully absorbed at the first fastening point of the holder.

[0010] The tool is advantageously a blower that delivers a stream of blast air through a blowpipe during operation. The connecting device advantageously absorbs the recoil force generated by the escaping blast air stream during operation. Especially with high-performance blowers, the recoil force constitutes a major portion of the forces absorbed by the operator. Because the connecting device absorbs the recoil force generated by the escaping blast air stream during operation, largely force-free operation is possible, even with very high-performance blowers. The strain on the operator's wrist, which is usually responsible for absorbing the recoil force, is significantly reduced.

[0011] An advantageous arrangement results when the second attachment point and the longitudinal center axis of the blower pipe lie in the same vertical plane as the center of gravity. This results in an advantageous alignment of the blower. If the blower is pivotally mounted at the second attachment point, the longitudinal center axis of the blower pipe and the second attachment point lie in the same vertical plane when the blower is at rest, i.e. when no external forces are acting on the blower, i.e. when the blower is not in operation and the operator does not pivot the blower from its rest position. By arranging the longitudinal center axis of the blower pipe in the plane in which the second attachment point and the center of gravity of the tool lie, the operator only needs to exert very little force to hold and guide the blower during operation.An ergonomic arrangement is achieved when the second attachment point is located behind the center of gravity of the implement relative to the operator. However, if the second attachment point is located behind the center of gravity of the implement, the operator must bear part of the weight force themselves.

[0012] Advantageously, the implement is at a distance from the holder in the working position, measured lateralally relative to the operator. Because the implement is at a lateral distance from the holder and does not rest against the holder, the implement can be pivoted freely during operation without the pivoting movement being impeded by the holder. Advantageously, the connecting device is pivotably mounted at the second fastening point about a vertical pivot axis. The pivotability about the vertical pivot axis allows the implement to be pivoted in a horizontal plane. Advantageously, the connecting device is pivotably mounted at the second fastening point about a horizontal pivot axis. This enables the implement to pivot vertically. A simple design is achieved if the second fastening point is formed on a ball joint.

[0013] The connecting device comprises a connecting pin. This results in a simple structure. In the working position, the connecting pin projects horizontally from the holder and laterally relative to the operator. The connecting pin is arranged movably, in particular, in a housing receptacle of the implement. The connecting device advantageously has means for centering the connecting pin in the housing receptacle. This is particularly advantageous when the connecting device is designed to be detachable at a fastening point, in particular at the first fastening point. Centering the connecting pin simplifies the fixing of the connecting pin in a receptacle of the holder.

[0014] Hand-held tools are usually carried on the right side of the body by right-handed operators, while left-handed operators often prefer to carry them on the left side. To enable the tool to be positioned on either the right or left side of the body, it is advantageous to provide a connection pin that can protrude from the housing on opposite sides. The connection pin can protrude permanently from both sides of the housing. However, it can also be advantageous for the connection pin to only protrude from the housing on one side of the housing and not from the opposite side. This prevents the operator from being hindered by a connection pin that protrudes from the housing on the side of the housing facing away from the operator.

[0015] To enable working with the implement even without the support device, it is advantageously provided that the connection between the implement and the holder is detachable at at least one fastening point. Depending on the design of the connecting device, the connection can be detachable at the first fastening point or at the second fastening point. It can also be provided that the connecting device itself is detachable.

[0016] A simple design results if the holder has a receptacle for the connecting device, wherein the connecting device comprises a plate arranged at the first fastening point, which engages behind at least one rail of the receptacle. The holder can, for example, be arranged on a holding plate to be worn on the operator's leg. An arrangement on a hip belt or the like can also be expedient. Advantageously, the holder can be formed on a backpack arrangement. An energy storage unit is advantageously held on the backpack arrangement, which is connected to the work device via a power line. Advantageously, the energy storage unit is a battery and the power line a cable. However, another energy storage unit, for example a fuel or gas tank, can also be advantageous. The energy line is then a fuel line or a gas line.The drive motor of the implement is located in the blower itself and not on the backpack assembly. This allows the implement to be detached from the backpack assembly and is connected only via the power cable, which offers a high degree of flexibility.

[0017] For a method for operating a working device, in particular a blower, which is connected via a connecting device to a holder to be carried by the operator, wherein the connecting device supports the working device in the working position backwards relative to the operator and prevents a backward movement of the working device, wherein the blower comprises means for detecting whether the blower is connected to the holder via the connecting device or not, it is provided that it is detected whether the blower is separated from the holder, and that the maximum power made available for driving the working device is reduced compared to the maximum power available for driving the working device when the working device is connected to the holder, if it is detected that the working device is separated from the holder.

[0018] The method for operating a working device represents an independent inventive concept that is independent of the design of the connecting device.

[0019] Reducing the maximum power available, i.e., when the control element is fully pressed, results in a reduction in recoil force. This makes it easy to reduce the force required by the operator during operation. Reducing the maximum power available prevents the operator from having to hold the control element in a partially pressed position for extended periods. This simplifies operation and improves ergonomics.

[0020] For a hand-held working device with a fastening device, wherein the working device has a housing in which a drive unit of the working device is arranged, and on which at least one handle for guiding the working device during operation is arranged, wherein the working device comprises a connecting device which projects from the housing and which is pivotally mounted at a fastening point about at least one pivot axis, it is provided that the fastening point and the center of gravity of the working device lie in a common vertical plane in the working position of the working device, wherein the common vertical plane is aligned in the longitudinal direction of the working device, and wherein the connecting device projects horizontally from the housing and in a lateral direction with respect to an operator.The connecting device, which extends horizontally and laterally relative to the operator, allows the implement to be connected to a mount that at least partially, and preferably completely, absorbs the tipping moment caused by the distance between the center of gravity and the mount. This enables simple, largely force-free operation of the implement. The arrangement of the attachment point and the center of gravity in the same vertical plane results in the implement being laterally balanced, so the operator does not have to absorb any forces and moments in the lateral direction. This enables low-force operation.

[0021] Embodiments of the invention are explained below with reference to the drawings. They show: Fig. 1 a schematic side view of a blower, Fig. 2 a sectional view of the blower from Fig. 1, Fig. 3 a schematic representation of the blower and a support device on an operator, Fig. 4 and Fig. 5 perspective views of the blower with the support device, Fig. 6 a partial perspective view of the blower in the area of the connecting device, Fig. 7 a section through the blower and the support device, Fig. 8 a perspective view of the support device holder, Fig. 9 an enlarged partial view of the connecting device from Fig. 7, Fig. 10 a representation corresponding Fig. 9 without the bracket, Fig. 11 a sectional view of the connecting device in a state pressed into the housing, Fig. 12 a sectional view of an embodiment of a connecting device, Fig. 13 a perspective view of an embodiment of a blower, Fig. 14 the blower Fig. 13 in side view, Fig. 15 a perspective view of another embodiment of a blower, Fig. 16 the blower Fig. 15 in side view.

[0022] Fig. Figure 1 shows, as an exemplary embodiment of a hand-held working device, a hand-held, hand-carried blower 1. However, the working device can also be a brush cutter or the like. The blower 1 has a housing 2 on which a handle 3 is arranged. An operating lever 4 is pivotally mounted on the handle 3. A blower tube 5 is formed on the housing 2, through which a blower unit 13 ( Fig. 2) conveys a blowing air stream. In the exemplary embodiment, a nozzle 6 is attached to the blowing tube 5. The nozzle 6 is advantageously replaceable, so that an operator can attach a nozzle 6 with the desired nozzle shape to adapt it to the intended use of the blower 1. An exhaust opening 8 is formed on the nozzle 6, through which the blowing air stream leaves the blower 1 in an exhaust direction 11.

[0023] Fig. 1 shows the blower 1 in an operating position 10. In the operating position 10, the blowing direction 11 is inclined downwards by an angle α relative to a horizontal line 12. The blowing angle α can, for example, be from approximately 10° to approximately 70°. During operation, the operator pivots the blower 1 in a vertical direction, as indicated by the double arrow 37, so that the blowing direction 11 changes and the blowing air stream can be directed onto the material to be blown away. During operation, the blowing air stream is sucked in via an intake opening 7, which in the operating position 10 is arranged laterally behind an operator 19 ( Fig. 3). The exhaust opening 8 is directed forward relative to the operator 19.

[0024] The blower 1 has a connecting device 9 which is used to connect to a holder 21 ( Fig. 3) on an operator 19. On the connecting device 9, the blower 1 can be pivoted about a pivot axis 27 which runs horizontally in the working position 10, as will be explained in more detail below.

[0025] Fig. Figure 2 shows the structure of the blower 1 in detail. The blower unit 13 comprises a drive motor 14, which drives at least one fan wheel (not shown) in rotation. In the exemplary embodiment, the drive motor 14 is arranged in the blower tube 5. An annular space is formed between the drive motor 14 and the blower tube 5, through which the fan wheel conveys the working air flow. Multiple fan wheels may be advantageous. In the exemplary embodiment, the blower unit has a non-rotating guide wheel 15. Downstream of the fan wheel (not shown) and the guide wheel 15, a guide element 16 is provided, which is approximately shaped as a rounded cone and on whose outer circumference the annular space widens. The blower unit 13 conveys the blown air flow in the direction of a longitudinal central axis 18 of the blower tube 5. In the exemplary embodiment, the blower unit 13 is designed as an axial fan. However, training as a diagonal blower can also be advantageous.The inflow direction into the fan and the outflow direction from the fan run in approximately the same direction.

[0026] A control 50 arranged in the housing 2 serves to control the drive motor 14. Downstream of the guide element 16, the blow pipe 5 is slightly curved downwards in the working position 10, while the nozzle 6 is straight in the exemplary embodiment.

[0027] The blower 1 has a center of gravity 17, which in the exemplary embodiment is located in the area of the drive motor 14. A different position of the center of gravity 17 can also be advantageous. For different nozzles 6, different positions of the center of gravity 17 can result. The blower 1 is designed such that the center of gravity 17 is located below the handle 3 in the working position 10. As a result, the operator only has to deal with a slight tilting moment about the horizontal pivot axis 27 ( Fig. 1) or a pivot axis running in the longitudinal direction of the blower 1. The connecting device 9 also has a vertical pivot axis 29, which also passes through the pivot point 17 and intersects the handle 3.

[0028] Fig. Figure 3 schematically shows an arrangement of the blower 1 on an operator 19. The blower 1 is supported on the operator 19 via a support device 20. The support device 20 comprises a holding plate 22, which in the exemplary embodiment is worn by the operator via a hip belt 23 and a leg belt 24. Another connection of the holding plate 22 may also be advantageous, for example, exclusively via a hip belt or to a belt arrangement that also includes shoulder straps and / or other straps. The holder 21, to which the connecting device 9 is held, is formed on the holding plate 22. As Fig. 3, the vertical pivot axis 29 is arranged in a vertical plane 26 which is the longitudinal center axis 18 of the blowpipe 5 ( Fig. 2). In the working position 10, the vertical plane 26 has a distance a from the bracket 21, measured in the horizontal direction and in the lateral direction relative to the operator. As a result, the blower 1 hangs next to the operator 19 during operation. The blower 1 is supported exclusively by the bracket 21 and the holding plate 22 on the operator 19. The housing 2 of the blower 1 does not rest against the holding plate 22. Support is provided exclusively by the connecting device 9.

[0029] In Fig. 3 also shows the horizontal pivot axis 27. The distance a is measured parallel to the horizontal pivot axis 27. The center of gravity 17 also lies in the vertical plane 26. During operation, the operator 19 also pivots the blower 1 about the vertical pivot axis 29. In doing so, the discharge opening 8 moves to the right and left, as indicated by the double arrow 39. Due to the distance a, the pivoting movements in the direction of the double arrows 37 and 39 can be carried out without impeding the movement by the holding plate 22.

[0030] How Fig. 4 shows, the holding plate 22 has slots 25 for fixing the hip belt 23 and the leg belt 24. In Fig. Figure 4 also schematically shows the recoil force R exerted on the blower 1 by a blower air stream exiting the blower opening 8 during operation. During operation, the recoil force R is completely absorbed by the connecting device 9 and diverted to the holder 21 and the retaining plate 22. The recoil force R is thus absorbed by the leg of the operator 19 and not by a hand arranged on the handle 3. This minimizes the strain on the operator, particularly in the wrist.

[0031] How Fig. 5, the connecting device 9 comprises a bellows 34, which will be described in more detail below. As Fig. 6 shows, a plate 36 is arranged at the end of the bellows 34 protruding from the housing 2.

[0032] The sectional view in Fig. Figure 7 shows the structure in detail. The connecting device 9 comprises a connecting pin 33, which is secured at a first fastening point 30 on the holding plate 22 and at a second fastening point 31 on the blower 1. The first fastening point 30 is formed by a receptacle 28 on the holding plate 22. As Fig. As also shown in Fig. 7, insertion aids 40 are provided above the receptacle 28, which are designed as sheet metal sections projecting obliquely from the holding plate 22, as well as Fig. 8. At the second fastening point 31, a ball joint 32 is provided, by means of which the blower 1 is pivotally mounted relative to the connecting pin 33. The ball joint 32 permits pivoting movements about the vertical pivot axis 29 and about the horizontal pivot axis 27. Tilting of the blower 1 about an axis approximately parallel to the longitudinal center axis 18 ( Fig. 2) and axis 49 passing through the ball joint 32 is possible over a small angular range.

[0033] How Fig. As shown in Figure 7, the connecting pin 33 is surrounded by the bellows 34. The connecting pin 33 projects into a housing receptacle 35, which is formed as a recess in the housing 2. The ball joint 32 is provided at the bottom of the housing receptacle 35. The second fastening point 31 is provided centrally in the housing 2 and, together with the center of gravity 17, lies on the vertical pivot axis 29. The bellows 34 centers the connecting pin 33 in the housing receptacle 35. As a result, the connecting pin 33 projects approximately perpendicular to the vertical plane 26 from the housing 2 of the blower 1.

[0034] How Fig. 7 shows, the vertical plane 26 has a distance a from the holding plate 22. The distance a is measured perpendicular to the vertical plane 26. The blower 1 is held freely swinging on the ball joint 32 within a design-specified angular range. As Fig. As shown in Figure 7, the housing 2 of the blower 1 has a lateral distance b from the holding plate 22 and does not touch the holding plate 22 in the operating position 10. The distance b is selected to ensure sufficient mobility of the blower 1 during operation. The distance a is advantageously between approximately 7 cm and approximately 11 cm. A distance a of approximately 10 cm has proven particularly advantageous. Fig. Figure 7 also shows the weight force F of the blower, which acts vertically downward from the center of gravity 17. The weight force F exerts a tilting moment at the first attachment point 30. This tilting moment is completely absorbed by the mount 28.

[0035] Recording 28 is how Fig. 8 shows, in the exemplary embodiment is designed as a sheet 41, which has an approximately vertical slot 51 for the connecting pin 33. The sheet 41 is fixed to the holding plate 22 at a distance from the holding plate 22. In the exemplary embodiment, shims 42 are used for this purpose, which in Fig. 9, are placed between the holding plate 22 and the sheet metal 41. The edges of the sheet metal 41 that delimit the slot 51 form lateral rails 38, behind which the plate 36 is guided. Due to the comparatively large extension of the plate 36 in the vertical direction, the tilting moment exerted by the weight force F at the first fastening point 30 is introduced from the plate 36 into the rails 38 and thus into the holding plate 22. The plate 36 is firmly connected to the connecting pin 33 and is immovable under the forces normally acting during operation. As a result, the weight force F of the implement is supported at the first fastening point 30.

[0036] Fig. Figure 9 shows the design of the connecting device 9 in detail. The bellows 34 has a first end 44, which is held between a collar 52 on the plate 36 and a thickened portion 53 of the connecting pin 33. The first end 44 of the bellows 34 is held at a slight distance from the plate 36, so that the sheet metal 41 can engage between the first end 44 of the bellows 34 and the plate 36. A second end 45 of the bellows 34 is held on the housing 2 at its outer circumference. The second end 45 is pressed against the wall of the housing 2 by a ring 43 arranged in the bellows 34. As Fig. As also shown in Figure 9, the connecting pin 33 has a shoulder 46 at which the diameter of the connecting pin 33 increases in the direction of the first fastening point 30. The shoulder 46 forms a stop for the connecting pin 33. The connecting pin 33 can be inserted into the ball joint 32 up to the shoulder 46.

[0037] In Fig. 10, the tilting movement of the blower 1 around the axis 49 is indicated by a double arrow 47. As the Fig. 10 and Fig. 11, the inner diameter of the housing receptacle 35 in the vertical sectional plane shown through the connecting pin 33 corresponds approximately to the outer diameter of the bellows 34. As a result, the pivoting movement about the axis 49 in the direction of the double arrow 47 is limited by the bellows 34. Tilting movements about the axis 49 are only possible to the extent permitted by the elasticity of the bellows 34.

[0038] How Fig. 10 also shows, a receiving space 48 is formed in the housing 2 on the side of the connecting pin 33 facing away from the plate 36. If the connecting device 9 is not required, the connecting pin 33 can be pressed into the housing 2 until the Fig. 11 is reached. The free end of the connecting pin 33 projects into the receiving space 48. The bellows 34 is compressed when the connecting pin 33 is pushed into the housing 2. In the position pressed into the housing 2, the plate 36 is approximately flush with the outside of the housing 2 and closes in the Fig. 11 shown sectional plane the housing receptacle 35 largely.

[0039] Fig. Figure 12 shows an embodiment of a connecting device 59 comprising a connecting pin 63. The connecting device 59 is provided on a blower having a housing 62. The structure of the blower essentially corresponds to the blower 1 shown in the previous figures. Corresponding elements are designated by the same reference numerals in all figures. The housing 62 in Fig. 12 has two housing receptacles 35, which are open towards opposite sides of the housing 62. The connecting pin 63 extends through the housing 62. A first end 64 of the connecting pin 63, which projects from the housing 62, carries a plate 36. The end 65 of the connecting pin 63, which projects from the housing 62 on the opposite side, also carries a plate 36. As a result, the connecting pin 63 can be arranged both on a holder 21 arranged on the right side of an operator 19 and on a holder 21 arranged on the left side of the operator 19. As a result, the blower can be Fig. 12 can be operated equally by right-handed and left-handed persons. It can be provided that the connecting pin 63 protrudes from the housing 62 only on one side of the housing 62 and that the connecting pin 63 is displaceable in its longitudinal direction, so that the connecting pin 63 protrudes from the housing 62 optionally on one or the other side of the housing.

[0040] The Fig. 13 and Fig. 14 show an embodiment of a blower 71, the construction of which essentially corresponds to that of the blower 1. The design of the connecting device 9 also corresponds to that of the blower 1. The bellows 34 is not shown in the figures. Fig. As shown in Figure 13, the blower 71 has a housing 72 on which a handle 73 is arranged. A guide knob 74 is arranged on the housing 72 on the forward-facing side of the handle 73. When the blower 71 is secured to the support plate 22 via the support device 20, the blower 71 is suspended. The operator can pivot the blower 71 horizontally and vertically on the guide knob 74 by simply applying light pressure with his hand, thus directing the blowing air flow in the desired blowing direction. This allows for fatigue-free operation even with a blower 71 with very high blowing power.

[0041] The Fig. 13 and Fig. 14 also shows the shape of the housing receptacle 35. The housing receptacle 35 has two sections 75, which are approximately circular segment-shaped. One section 75 projects forward from a central position of the connecting pin 33 in the working position 10 and relative to an operator carrying the blower 71, and another section 75, which is also circular segment-shaped, projects rearward. This allows the blow-out opening 1 of the blower 71 to be pivoted to the right and left relative to the connecting pin 33. The shape of the housing receptacle 35 determines the possible pivot angle for the blower 71. The walls of the housing receptacle 35 form a stop for the Fig. 13 and Fig. 14 bellows 34 not shown.

[0042] The Fig. 15 and Fig.16 shows an embodiment of a blower 81, on whose housing 82 a handle 83 and a guide knob 84 arranged in front of the handle 83 are provided. While the guide knob 74 has a flattened shape, the guide knob 84 is approximately spherical.

[0043] Blowers 1, 71, and 81 have an electric drive motor 14. To supply power to the drive motor 14, a rechargeable battery can be installed on the blower 1, 71, or 81. To achieve high blowing performance with a sufficiently long operating time, a comparatively large battery is necessary. To avoid excessive weight of the blower 1, 71, or 81, a backpack-mounted battery can be provided, which is connected to the blower 1, 71, or 81 via a power cable.

Claims

[1] Arrangement with a hand-held working device and with a support device, wherein the working device has a housing (2, 62, 72, 82) in which a drive unit of the working device is arranged, and on which at least one handle (3, 73, 83) for guiding the working device during operation is arranged, wherein the support device (20) is provided for supporting the working device during operation and has a holder (21) to be carried by an operator (19), wherein the support device (20) comprises a connecting device (9, 59) which is held at a first fastening point (30) on the holder (21) and at a second fastening point (31) on the working device, wherein the connecting device (9, 59) is pivotally mounted at the second fastening point (31) about at least one pivot axis (27, 29), and wherein the connecting device (9,59) supports the implement in the working position (10) to the rear relative to the operator (19) and prevents a rearward movement of the implement, wherein the center of gravity (17) of the implement and the first fastening point (30) in the working position (10) of the implement have a distance (a, c) from each other measured in the horizontal direction and in the lateral direction relative to the operator (19), and wherein the holder (21) at the first fastening point (30) has means for at least partially supporting the tilting moment exerted by the weight force (F) of the implement at the first fastening point (30) due to the lateral distance (a, c), , characterized by that the connecting device (9, 59) comprises a connecting pin (33, 63) which, in the working position (10), projects horizontally from the holder (21) and laterally with respect to the operator (19). [2] Arrangement according to claim 1, characterized by that the distance (a, c) is from 7 cm to 11 cm. [3] Arrangement according to claim 1 or 2, characterized by that the second fastening point (31) is arranged within the housing (2, 62). [4] Arrangement according to one of claims 1 to 3, characterized by that the second fastening point (31) and the center of gravity (17) of the working device lie in a common vertical plane (26). [5] Arrangement according to claim 4, characterized by that the center of gravity (17) lies vertically below the second fastening point (31). [6] Arrangement according to claim 4 or 5, characterized by that the working device is a blower (1, 71, 81) which, during operation, conveys a blowing air stream through a blowing pipe (5) and that the connecting device (9, 59) absorbs the recoil force (R) generated by the escaping blowing air stream during operation. [7] Arrangement according to claim 6, characterized bythat the second fastening point (31) and the longitudinal central axis (18) of the blowpipe (5) lie in the common vertical plane (26). [8] Arrangement according to one of claims 1 to 7, characterized by that the working device in the working position (10) has a distance (b) from the holder (21) measured in the lateral direction with respect to the operator (19). [9] Arrangement according to one of claims 1 to 8, characterized by that the connecting device (9, 59) is pivotally mounted at the second fastening point (31) about a vertical pivot axis (29). [10] Arrangement according to one of claims 1 to 9, characterized by that the connecting device (9, 59) is pivotally mounted at the second fastening point (31) about a horizontal pivot axis (27). [11] Arrangement according to one of claims 1 to 10, characterized by that the second fastening point (31) is formed on a ball joint (32). [12] Arrangement according to one of claims 1 to 11, characterized by that the connecting pin (33, 63) is movably arranged in a housing receptacle (35). [13] Arrangement according to claim 12, characterized by that the connecting device (9, 59) has means for centering the connecting pin (33, 63) in the housing receptacle (35). [14] Arrangement according to one of claims 1 to 13, characterized by that the connecting pin (63) can protrude from the housing (2) on opposite sides of the housing (2). [15] Arrangement according to one of claims 1 to 14, characterized by that the connection between the working device and the holder (21) is detachable. [16] Arrangement according to one of claims 1 to 15, characterized bythat the holder (21) has a receptacle (28) for the connecting device (9, 59), and that the connecting device (9, 59) comprises a plate (36) arranged at the first fastening point (30) which engages behind at least one rail (38) of the receptacle (28). [17] Arrangement according to one of claims 1 to 16, characterized by that the holder (21) is formed on a back carrying arrangement on which an energy storage unit is held, wherein the energy storage unit is connected to the working device via a power line. [18] Hand-held implement with fastening device, wherein the implement has a housing (2, 62) in which a drive unit of the implement is arranged, and on which at least one handle (3, 73, 83) for guiding the implement during operation is arranged, wherein the implement comprises a connecting device (9, 59) which projects from the housing (2, 62) and which is pivotally mounted at a fastening point (31) about at least one pivot axis (27, 29), wherein the fastening point (31) and the center of gravity (17) of the implement lie in a common vertical plane (26) in the working position (10) of the implement, wherein the common vertical plane (26) is aligned in the longitudinal direction of the implement, and wherein the connecting device (9, 59) projects horizontally from the housing (2) and laterally with respect to an operator (19), characterized bythat the connecting device (9, 59) comprises a connecting pin (33, 63) which, in the working position (10), projects horizontally from the holder (21) and laterally with respect to the operator (19).

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