Tree cutting machine

Abstract

The invention relates to a tree cutting machine having a housing (2) and a drive motor (3), the drive motor (3) driving a saw chain (5) guided in a guide groove of a guide rail (4) by means of a drive sprocket, a fastening section (14) being provided at a rear end (7) of the housing (2), the fastening section (14) is provided for receiving a first battery pack (21) for supplying the drive motor (3) with electrical energy, and wherein the fastening section (14) is provided for receiving a second battery pack (22), and wherein the fastening section (14) is arranged on the housing (2), in particular at least on the first handle (9), in such a way that the fastening section (14) is provided for receiving the second battery pack (22). The first handle (9) is configured such that, in a state of the tree cutting machine (1) in which the first battery pack (21) and the second battery pack (22) are arranged at the fixing section (14), the center of gravity (S1) of the tree cutting machine (1) is located in the first handle (9).

Description

Technical Field

[0001] The invention relates to a tree cutting machine. Background Art

[0002] Common tree cutters on the market include a housing and a drive motor arranged in the housing, wherein the drive motor drives a saw chain to wrap around a guide rail. Summary of the invention

[0003] The invention is based on the object of specifying a particularly ergonomic tree cutter.

[0004] This object is achieved by a tree cutting machine according to claim 1 .

[0005] The tree cutter according to the present invention comprises a housing and a drive motor, wherein the drive motor drives a saw chain guided in a guide groove of a guide rail to revolve via a drive sprocket, wherein the guide rail is arranged at the front end of the housing and has a longitudinal plane spanned by the guide groove, wherein a fixing section is provided at the rear end of the housing, the fixing section being used to receive a first battery pack for supplying electrical energy to the drive motor, wherein the housing comprises a first handle for supporting a hand of an operator, wherein in particular the first handle is associated with an operating element for operating the drive motor, wherein the fixing section is provided for receiving a second battery pack, wherein the fixing section is arranged at the housing, in particular at least at the first handle, so that when the tree cutter is in a state in which the first battery pack and the second battery pack are arranged at the fixing section, the center of gravity of the tree cutter is located in the first handle.

[0006] The center of gravity of the tree cutter is located in the first handle of the tree cutter, so that the user grips the tree cutter at the center of gravity. As a result, the tipping moment caused by gravity, which acts around the handle and must be compensated by the operator, is reduced. As a result, the operator can hold and guide the tree cutter in a simple manner.

[0007] Preferably, the guide rail has a longitudinal center axis and a transverse plane oriented orthogonally to the longitudinal plane. The longitudinal center axis is preferably located in the longitudinal plane and in the transverse plane. Preferably, the transverse plane divides the tree cutter into an upper section surrounding the drive motor and a lower section. The center of gravity of the tree cutter is preferably located in the lower section of the tree cutter. As a result, the tree cutter has a particularly low center of gravity and can be guided by the operator in a simple manner.

[0008] Preferably, the fastening section for the battery pack of the housing is located in the lower section of the tree cutter. Thus, the battery pack is also located in the lower section of the tree cutter when inserted into the fastening section. As a result, the center of gravity can be shifted further into the lower section.

[0009] Preferably, the drive motor has a rotational axis, wherein the rotational axis extends parallel to or lies within the longitudinal plane of the guide rail. Thereby, a slender structure of the tree cutter can be achieved.

[0010] Preferably, it is arranged such that the fixed section is configured such that the battery pack can be inserted into the fixed section in the insertion direction. Advantageously, the insertion direction substantially corresponds to the longitudinal direction of the first handle. When inserting the battery pack, the operator can hold the tree cutter with one hand and push or pull out the battery pack with the other hand. Since the insertion direction preferably substantially corresponds to the longitudinal direction of the handle, the operator can simply apply the reaction force required for pushing in and pulling out the battery pack.

[0011] Preferably, the fixed section is configured such that in the state of the tree cutter with the first battery pack and the second battery pack inserted, the distance measured in the direction of the longitudinal central axis between the center of gravity of the first battery pack and the center of gravity of the tree cutter is greater than the distance measured in the longitudinal direction between the center of gravity of the second battery pack and the center of gravity of the tree cutter. Therefore, the battery packs are arranged offset from each other in the direction of the longitudinal central axis. In other words, the distances between the first battery pack and the center of gravity of the tree cutter and between the second battery pack and the center of gravity of the tree cutter are different.

[0012] Advantageously, it is arranged such that the fixed section is configured such that in the state of the tree cutter with the first battery pack and the second battery pack inserted, the distance measured perpendicular to the transverse plane between the center of gravity of the first battery pack and the center of gravity of the tree cutter is less than the distance measured perpendicular to the transverse plane between the center of gravity of the second battery pack and the center of gravity of the tree cutter. Therefore, the battery packs are arranged offset from each other in the "height", i.e., in the direction perpendicular to the transverse plane.

[0013] Particularly preferably, the operating element is arranged at the first handle. Preferably, the operating element is configured as a lever swingable about a first swing axis, wherein the operating element has an outer contour with a maximum first radius with respect to the first swing axis, and the first radius is greater than the distance between the center of gravity of the tree cutter and the first swing axis. Preferably, the distance between the operating element and the center of gravity of the tree cutter is not greater than 3 cm, preferably not greater than 2 cm. Therefore, the center of gravity of the tree cutter is particularly close to the operating element. During the proper operation of the tree cutter, the operating element is operated by the index finger of the operator. Therefore, the operator holds the handle with the index finger close to the center of gravity of the tree cutter. By surrounding the center of gravity of the tree cutter with the thumb and index finger, the operator can operate the tree cutter in a particularly ergonomic manner.

[0014] Preferably, the housing has a longitudinal central plane extending parallel to the longitudinal plane, wherein the longitudinal central plane divides the housing centrally (mittig), and wherein the center of gravity of the tree cutter is located almost within the longitudinal central plane, particularly preferably within the longitudinal central plane of the housing. Thus, no lateral tipping moment that has to be compensated on the operator side is generated.

[0015] Preferably, it is arranged that the housing includes a second handle for supporting the operator's other hand, and wherein the center of gravity of the tree cutter is configured between the second handle and the operating element associated with the first handle. Preferably, the center of gravity of the tree cutter is configured between the second handle and the operating element in a direction extending perpendicular to the transverse plane of the guide rail.

[0016] Particularly preferably, the tree cutter has a fixing device. The fixing device preferably has at least one first fixing element for holding the tree cutter at a first fixing element. The fixing device is in particular arranged at the handle housing. The operator can fix the tree cutter at a carrying device or the like via the fixing device. The tree cutter can be fixed, for example, at a rope via at least one first fixing element, and the rope is, for example, hung at the operator's carrying device at the other end. If the operator accidentally drops the tree cutter, the tree cutter can be held by the rope. Preferably, the first fixing element is configured as a grommet

[0017] The fixing device preferably has a second fixing element for holding the tree cutter at a second fixing element. The second fixing element can be used similarly to the first fixing element. The second fixing element is in particular configured as a grommet.

[0018] Advantageously, it is arranged that the housing has a first longitudinal outer side and a second longitudinal outer side. These longitudinal outer sides are preferably arranged opposite each other with respect to a plane oriented parallel to the longitudinal plane of the guide rail. The first fixing element is preferably arranged at the first longitudinal outer side. The second fixing element is preferably arranged at the second longitudinal outer side.

[0019] Preferably, it is arranged that the fixing device is arranged in a fixing section of the housing. The fixing section is in particular part of the handle housing. Thus, the fixing device is closer to the rear end of the tree cutter, whereby the tree cutter is oriented in the direction of the ground with the guide rail hanging at the fixing device.

[0020] The fixing device is preferably arranged transversely between the first battery pack and the second battery pack in a state where the first battery pack and the second battery pack are inserted into the tree cutter.

[0021] The fixing device preferably includes a base body. Preferably, the fixing device, in particular the base body of the fixing device, is configured as an integral unit. The base body is preferably configured to be planar. Through the integral construction of the fixing device, it is preferably possible to transfer high forces to the housing. On the other hand, the fixing device is thus simply constructed and can be manufactured at low cost.

[0022] Preferably, the housing includes a first housing half and a second housing half, wherein the fixing device is held, in particular in a form-fitting manner, between the first housing half and the second housing half. Thereby, simple assembly of the tree cutter with respect to the fixing device can be achieved.

[0023] Advantageously, the base body extends in the longitudinal direction, wherein fixing elements are configured at at least one of the longitudinal ends of the base body. Particularly preferably, fixing elements are configured at the longitudinal ends of the base body respectively. Advantageously, adjacent to the fixing device, the first housing half and the second housing half are connected to each other via a mechanical connection structure. The mechanical connection structure is preferably configured as a threaded connection structure. In an alternative design of the tree cutter, it may also be suitable to provide other mechanical connection structures, such as snap connection structures, riveted connection structures or similar connection structures. Thereby, the forces transferred from the fixing device to the housing halves can be supported by the mechanical connection structure, in particular by the threaded connection structure. Therefore, the fixing device can absorb high loads.

[0024] Particularly preferably, the fixing device is arranged between the center of gravity of the tree cutter and the rear end of the housing. Preferably, the fixing device is arranged between the center of gravity of the tree cutter and the rear end of the housing with respect to the longitudinal direction of the first handle. If the tree cutter is hung at its fixing device, the tree cutter is oriented by gravity such that the center of gravity of the tree cutter is located below the fixing device. Therefore, the guide rail arranged at the front end of the housing is also oriented towards the ground. On the one hand, this orientation of the tree cutter enables the operator to simply grasp the first handle of the tree cutter from above. If the operator wants to pick up the tree cutter again for work, there is no need to re-wrap the tree cutter with hands. On the other hand, especially when cutting a tree, it is advantageous that the tree cutter is oriented with the guide rail pointing towards the ground when hung at the fixing device. If the operator pulls the tree cutter upwards towards himself, the tree cutter hangs less with its saw chain in the branches.

[0025] Advantageously, the first handle is configured such that it includes a first handle section for supporting an operator's hand, wherein the handle section has an upper side and a lower side facing away from the upper side. The housing preferably includes a covering arch. The covering arch preferably extends from its first end along the lower side of the first handle section to its second end. Particularly preferably, the covering arch extends substantially parallel to the lower side of the first handle section. The covering arch preferably has a narrowing in the direction towards its second end. For example, the operator can fix the tree cutter at the narrowing, e.g., at the operator's carrying device, via a carabiner or other fixing means.

[0026] The first end of the covering arch preferably abuts against the motor housing of the housing and / or the central housing of the housing.

[0027] The covering arch preferably has a maximum width measured perpendicular to the longitudinal plane spanned by the guide groove of the guide rail. The longitudinal plane is preferably exactly centered in the guide groove of the guide rail. The covering arch particularly has a minimum width measured perpendicular to the longitudinal plane spanned by the guide groove of the guide rail at its narrowing. The minimum width at the narrowing is in particular at most 70%, preferably at most 60%, advantageously approximately 50% of the maximum width of the covering arch. Particularly preferably, the minimum width of the covering arch at the narrowing is at least 10%, preferably at least 20%, particularly preferably at least 30%, preferably at least 40% of the maximum width of the covering arch. Due to this design of the covering arch, the covering arch is narrow enough at its narrowing to surround the narrowing by the fixing means. Nevertheless, the cross-section of the covering arch at its narrowing is still large enough to reinforce the housing.

[0028] Advantageously, a locking lever for locking and releasing the operating element is provided. The locking lever preferably has an outer contour that extends in the width perpendicular to the longitudinal plane of the guide rail, wherein this width is in particular smaller than the maximum width of the covering arch. Particularly preferably, the covering arch extends from a first longitudinal side to a second longitudinal side, and preferably, the outer contour of the locking lever is completely arranged between the first longitudinal side and the second longitudinal side of the covering arch at least in the region of the first end of the covering arch in the direction perpendicular to the longitudinal plane of the guide rail. The operating element is preferably arranged between the first handle section and the covering arch. Thus, the operating element is at least partially located behind the covering arch.

[0029] Advantageously, it is arranged such that the covering bow has an upper side facing the lower side of the first handle section. Preferably, the housing includes a bridging section, wherein the bridging section extends from the upper side of the covering bow to the lower side of the handle section. The bridging section reinforces the housing of the tree cutter. The actuating element is preferably arranged between the bridging section and the first end of the covering bow. The narrowing of the covering bow is preferably arranged between the bridging section and the second end of the covering bow. The second end of the covering bow leads into the fixed section of the housing.

[0030] Advantageously, it is arranged such that a protection device for protecting the battery pack is provided at the fixed section, wherein the battery pack extends in its longitudinal direction from a first end side to a second end side respectively, wherein the first end side of the battery pack faces the fixing device, while the second end side of the battery pack faces away from the fixing device, wherein the protection device includes at least one first covering element, and wherein the first covering element extends at least up to the second end side of the first battery pack in the longitudinal direction of the first battery pack. The first covering element protects the first battery pack from impact loads, for example in the case where the tree cutter falls to the ground. Thus, damage to the first battery pack can be avoided.

[0031] The protection device includes at least one second covering element. The second covering element preferably extends at least up to the second end side of the second battery pack in the longitudinal direction of the second battery pack. Thus, the second covering element protects the second battery pack from impact loads, for example in the case where the tree cutter falls to the ground. Thus, damage to the second battery pack can be avoided.

[0032] Advantageously, it is arranged such that the battery packs are pushed into the fixing device in their longitudinal directions respectively. Particularly preferably, the battery packs are pushed into the fixing device, wherein the first battery pack and the second battery pack each have a longitudinal axis extending in the longitudinal direction of the respective battery pack. The longitudinal axes of the battery packs are especially oriented parallel to the longitudinal central plane of the housing. The longitudinal axes of the battery packs can also preferably extend at an angle to each other. The longitudinal axes of the battery packs are particularly preferably located in the longitudinal central plane of the housing. In the transverse direction, the battery packs are preferably arranged one above the other. The transverse direction is advantageously oriented perpendicular to the longitudinal direction of the first battery pack and / or the longitudinal direction of the second battery pack. The transverse direction is preferably located in a plane oriented parallel to the longitudinal central plane of the housing. Thus, in a top view of the tree cutter, the battery packs are stacked one above the other, thereby enabling a particularly slender structure of the tree cutter.

[0033] Advantageously, the battery packs are arranged offset from one another in their longitudinal direction, and the second end sides of the battery packs are located in different planes. Thus, the battery packs are arranged offset from one another in the longitudinal direction. Preferably, the battery packs are arranged at least overlapping one another in the longitudinal direction. Preferably, the planes of the end sides of the first battery pack and the second battery pack extend parallel to one another.

[0034] Advantageously, the protection device includes at least one third covering element. Preferably, the protection device includes at least one fourth covering element. The third covering element preferably extends at least up to the second end side of the battery pack in the longitudinal direction of the battery pack. The fourth covering element preferably extends at least up to the second end side of the battery pack in the longitudinal direction of the battery pack. Particularly advantageously, the third covering element and the fourth covering element extend at least up to the second end side of the battery pack in the longitudinal direction of the battery pack. Thereby, in the inserted state, the battery packs are also protected by the third covering element and the fourth covering element against impact loads.

[0035] Preferably, the battery packs each have a cross-sectional profile that is substantially triangular with rounded corners. The battery packs are preferably constructed identically. The battery packs preferably each have a rear wall constructed between two rounded corners. The battery packs are arranged relative to one another in the fixing section such that the rear walls of the battery packs face each other. In the viewing direction of the longitudinal axis of the battery pack and / or the insertion direction of the battery pack, the contour enclosing the battery pack has a rhombic geometry. With this arrangement, a slender structure of the working device is obtained at the rear end portion of the working device. Advantageously, the first covering element is arranged at the rounded corner of the first battery pack facing away from the second battery pack. The second covering element is preferably arranged at the rounded corner of the second battery pack facing away from the first battery pack. Thereby, the first covering element and the second covering element at least partially jointly enclose the battery packs, whereby the first covering element also forms an improved robustness for the second battery pack, and the second covering element also forms an improved robustness for the first battery pack.

[0036] Particularly preferably, the third covering element and the fourth covering element are arranged between the battery packs in the transverse direction. The third covering element and the fourth covering element are constructed opposite to one another with respect to a plane oriented parallel to the longitudinal plane of the guide rail. Thus, the third covering element and the fourth covering element form lateral protection for the battery packs.

[0037] The protection device preferably has a clearance for gripping the battery pack between the covering elements. Thus, the operator can grip into the clearance and pull the battery pack out of the fixing section. Preferably, the locking element of the battery pack is arranged in the clearance, so that the user can operate the unlocking structure and then remove the battery from the device.

[0038] Preferably, a movement gap is provided between the covering element and the battery pack. Preferably, the movement gap narrows in the direction towards the first end side of the battery pack. If an impact load is applied to one of the covering elements, the covering element undergoes elastic deformation, whereby most of the impact energy is dissipated through the deformation of the covering element, thus avoiding damage to the battery pack.

[0039] The third covering element and / or the fourth covering element preferably have an outer side facing away from the battery pack, wherein the outer side has a concave circular portion that projects between the battery packs. Thereby, the third covering element and / or the fourth covering element extend close to the outer contour of the battery pack, thereby improving the protection of the battery pack.

[0040] Advantageously, the housing includes a second handle with a second handle section for supporting the operator's other hand, wherein a limiting device is provided between the second handle section and the guide rail, wherein the limiting device has a projection extending at least in the longitudinal plane relative to the second handle section, and the projection is configured such that sliding in the direction from the second handle section towards the guide rail is prevented. This ensures that the operator of the tree cutter can firmly hold the second handle of the tree cutter with his other hand. Thereby, the operator can precisely guide the tree cutter and can also perform delicate work on the tree.

[0041] Preferably, the projection is configured such that the projection forms a form-fitting stop for the operator's hand placed on the second handle section in the direction towards the guide rail. This can be particularly advantageous when the working device penetrates into the tree branch. During the main load is borne by one hand of the operator at the first handle, in particular, additional force can be applied via the form-fitting stop by the operator's other hand during penetration.

[0042] In the viewing direction perpendicular to the longitudinal plane, the limiting device preferably has an outer contour. The outer contour of the limiting device in particular has a first end adjacent to the second handle section and a second end adjacent to the guide rail. Particularly preferably, the projection of the limiting device is configured at the first end of the outer contour. Thus, the projection is directly adjacent to the second handle section of the second handle. By directly configuring the projection adjacent to the second handle section, the operator can place his other hand with the palm on the second handle section of the tree cutter and at the same time press the side of the hand, i.e., the side of the little finger, against the projection. Thus, the other hand has a firm fit on the second handle of the tree cutter.

[0043] Advantageously, the raised portion is configured such that it has a concave-shaped abutment section that abuts against the second handle section. The abutment section forms an undercut for the hand of the operator that abuts against the abutment section. Thus, when the other hand of the operator is placed on the second handle, it fits firmly into the undercut of the handle.

[0044] In particular, it is configured such that, in a viewing direction perpendicular to the longitudinal plane, the raised portion has a height measured perpendicular to the second handle section at the first end of the outer contour, where the height corresponds to at least 15%, in particular at least 20%, preferably approximately 25% of the length of the second handle section measured along the longitudinal direction of the second handle section.

[0045] Preferably, the housing includes a lubricant tank for supplying lubricant to the saw chain, wherein the limiting device at least partially surrounds the lubricant tank.

[0046] Particularly preferably, the housing is open upwards in the region of the second handle section. This enables the operator to grip and release the second handle section more conveniently.

[0047] Preferably, the abutment section is provided with an anti-slip coating. Thereby, the operator has an improved grip on the tree cutter on the second handle section, enabling the operator to work precisely with the tree cutter.

[0048] The present invention is furthermore based on the following task: to provide a tree cutter that enables simple operation of the tree cutter.

[0049] This task is solved by the tree cutter according to claim 15.

[0050] The tree cutter according to the present invention includes a housing and a drive motor, wherein a fixed section is provided at the rear end of the housing for receiving a first battery pack for supplying electrical energy to the drive motor, wherein the housing includes a handle housing with a first handle for supporting one hand of the operator, wherein the first handle is associated with an operating element for operating the drive motor, wherein the tree cutter has a fixing device, wherein the fixing device has at least one first fixing element for holding the tree cutter at the first fixing element, and wherein the fixing device is arranged at the handle housing.

[0051] The operator can fix the tree cutter to a carrying device or a similar device via the fixing device. The tree cutter can be fixed, for example, to a rope via at least one first fixing element, and the rope is hung, for example, at the carrying device of the operator at the other end. If the operator accidentally drops the tree cutter, the tree cutter can be held by the rope. Preferably, the first fixing element is configured as a grommet.

[0052] The fixing device preferably has a second fixing element for holding the tree cutter on the second fixing element. The second fixing element can be used similarly to the first fixing element. The second fixing element is especially configured as a rope loop.

[0053] Advantageously, the tree cutter comprises a guide rail with a guide groove and a saw chain looped in the guide groove, wherein the guide rail has a longitudinal plane spanned by the guide groove, and wherein the housing has a first longitudinal outer side and a second longitudinal outer side. The longitudinal outer sides are preferably arranged opposite each other with respect to a plane oriented parallel to the longitudinal plane of the guide rail. The first fixing element is preferably arranged at the first longitudinal outer side. The second fixing element is preferably arranged at the second longitudinal outer side.

[0054] Preferably, the fixing device is arranged in a fixing section of the housing. The fixing section is in particular a part of the handle housing. The fixing device is thus closer to the rear end of the tree cutter, whereby the tree cutter is hung on the fixing device and oriented with the guide rail towards the ground.

[0055] The fastening section is preferably used to receive the second battery pack. The fastening device is preferably arranged in the transverse direction between the first battery pack and the second battery pack in the inserted state of the tree cutter.

[0056] The fixing device preferably comprises a base body. Preferably, the fixing device, in particular the base body of the fixing device, is designed in one piece. The base body is preferably designed in a planar manner. By means of the one-piece design of the fixing device, preferably high forces can be transmitted to the housing. On the other hand, the fixing device is thus constructed in a simple manner and can be manufactured cost-effectively.

[0057] Preferably, the housing comprises a first housing half and a second housing half, wherein the fastening device is held between the first housing half and the second housing half, in particular in a form-fitting manner. This allows for a simple assembly of the tree cutter with respect to the fastening device.

[0058] Advantageously, it is provided that the base extends in the longitudinal direction, wherein a fixing element is configured at at least one of the longitudinal ends of the base. Particularly preferably, fixing elements are configured at the longitudinal ends of the base, respectively. Advantageously, adjacent to the fixing device, the first shell half and the second shell half are connected to each other by a mechanical connection structure. The mechanical connection structure is preferably configured as a threaded connection structure. In alternative designs of the tree cutter, it may also be suitable to provide other mechanical connections, such as a snap connection structure, a riveted connection structure or a similar connection structure. As a result, the forces transmitted by the fixing device to the shell halves can be supported by the mechanical connection structure, in particular by the threaded connection structure. As a result, the fixing device is able to absorb high loads.

[0059] Preferably, in a state where the first battery pack and the second battery pack are inserted into the tree cutter, the tree cutter has a center of gravity. It is particularly preferably arranged that the fixing device is arranged between the center of gravity of the tree cutter and the rear end portion of the housing. Preferably, the fixing device is arranged between the center of gravity of the tree cutter and the rear end portion of the housing with respect to the longitudinal direction of the first handle. If the tree cutter is hung at its fixing device, the tree cutter is oriented by gravity such that the center of gravity of the tree cutter is located below the fixing device. Therefore, the guide rail arranged at the front end portion of the housing is also oriented in the direction of the ground. On the one hand, this orientation of the tree cutter enables the operator to simply grasp the first handle of the tree cutter from above. If the operator wants to pick up the tree cutter again for work, there is no need to re-grasp the tree cutter with the hands. On the other hand, especially when cutting a tree, it is advantageous that the tree cutter is hung at the fixing device and the guide rail is oriented in the direction of the ground. If the operator pulls the tree cutter upwards towards himself, the saw chain of the tree cutter is less likely to catch on the branches.

[0060] The guide rail is particularly arranged at the front end portion of the housing. It is particularly preferably arranged that the fixing section is arranged at the housing, especially at least at the first handle, such that in a state of the tree cutter in which the first battery pack and the second battery pack are arranged at the fixing section, the center of gravity of the tree cutter is located in the first handle.

[0061] The center of gravity of the tree cutter is located in the first handle of the tree cutter, whereby the user grasps the tree cutter at the center of gravity. Thereby, the overturning moment caused by gravity and acting around the handle and which must be compensated by the operator is reduced. Therefore, the operator can simply hold and guide the tree cutter.

[0062] Preferably, it is arranged that the guide rail has a longitudinal central axis and a transverse plane oriented orthogonally to the longitudinal plane. The longitudinal central axis is preferably located in the longitudinal plane and in the transverse plane. Preferably, the transverse plane divides the tree cutter into an upper section surrounding the drive motor and a lower section. The center of gravity of the tree cutter is preferably located in the lower section of the tree cutter. Thereby, the tree cutter has a particularly low center of gravity and can be simply guided by the operator.

[0063] Preferably, the fixing section for the battery pack of the housing is located in the lower section of the tree cutter. Therefore, the battery pack is also located in the lower section of the tree cutter in a state of being inserted into the fixing section. Thereby, the center of gravity can be further shifted into the lower section.

[0064] Preferably, the drive motor has a rotational axis, wherein the rotational axis extends parallel to or lies in the longitudinal plane of the guide rail. Thereby, a slender structure of the tree cutter can be achieved.

[0065] Preferably, the fixed section is configured such that the battery pack can be inserted into the fixed section in the insertion direction. Advantageously, the insertion direction substantially corresponds to the longitudinal direction of the first handle. When inserting the battery pack, the operator can hold the tree cutter with one hand and push or pull out the battery pack with the other hand. Since the preferred insertion direction and the longitudinal direction of the handle substantially correspond, the operator can simply apply the reaction force required for pushing in and pulling out the battery pack.

[0066] Preferably, the fixed section is configured such that in the state of the tree cutter with the first battery pack and the second battery pack inserted, the distance measured in the direction of the longitudinal central axis between the center of gravity of the first battery pack and the center of gravity of the tree cutter is greater than the distance measured in the longitudinal direction between the center of gravity of the second battery pack and the center of gravity of the tree cutter. Therefore, the battery packs are arranged offset from each other in the direction of the longitudinal central axis. In other words, the distances between the first battery pack and the center of gravity of the tree cutter and between the second battery pack and the center of gravity of the tree cutter are different.

[0067] Advantageously, the fixed section is configured such that in the state of the tree cutter with the first battery pack and the second battery pack inserted, the distance measured perpendicular to the transverse plane between the center of gravity of the first battery pack and the center of gravity of the tree cutter is less than the distance measured perpendicular to the transverse plane between the center of gravity of the second battery pack and the center of gravity of the tree cutter. Therefore, the battery packs are arranged offset from each other in the "height", i.e., in the direction perpendicular to the transverse plane.

[0068] Particularly preferably, the operating element is arranged at the first handle. Preferably, the operating element is configured as a lever swingable about a first swing axis, wherein the operating element has an outer contour with a maximum first radius with respect to the first swing axis, and the first radius is greater than the distance between the center of gravity of the tree cutter and the first swing axis. Preferably, the distance between the operating element and the center of gravity of the tree cutter is not greater than 3 cm, preferably not greater than 2 cm. Therefore, the center of gravity of the tree cutter is particularly close to the operating element. During the proper operation of the tree cutter, the operating element is manipulated by the index finger of the operator. Therefore, the operator holds the handle with the index finger close to the center of gravity of the tree cutter. By surrounding the center of gravity of the tree cutter with the thumb and index finger, the operator can operate the tree cutter in a particularly ergonomic manner.

[0069] Preferably, the housing has a longitudinal central plane extending parallel to the longitudinal plane, wherein the longitudinal central plane divides the housing into two equal parts in the middle, and the center of gravity of the tree cutter is almost located within the longitudinal central plane, particularly preferably within the longitudinal central plane of the housing. Therefore, no lateral tipping moment that must be compensated on the operator side is generated.

[0070] Preferably, the housing includes a second handle for supporting the operator's other hand, and wherein the center of gravity of the tree cutter is configured between the second handle and the operating element associated with the first handle. Preferably, the center of gravity of the tree cutter is configured between the second handle and the operating element in a direction extending with respect to a transverse plane perpendicular to the guide rail.

[0071] Advantageously, the first handle includes a first handle section for supporting the operator's one hand, wherein the handle section has an upper side and a lower side facing away from the upper side. The housing preferably includes a covering arch. The covering arch preferably extends from its first end along the lower side of the first handle section to its second end. Particularly preferably, the covering arch extends substantially parallel to the lower side of the first handle section. The covering arch preferably has a narrowing in the direction towards its second end. For example, the operator can fix the tree cutter at the narrowing, for example at the operator's carrying device, via a spring clip or other fixing means.

[0072] The first end of the covering arch preferably abuts against the motor housing of the housing and / or the central housing of the housing.

[0073] The covering arch preferably has a maximum width measured perpendicular to the longitudinal plane spanned by the guide groove of the guide rail. The longitudinal plane is preferably located exactly in the middle of the guide groove of the guide rail. The covering arch especially has a minimum width measured perpendicular to the longitudinal plane spanned by the guide groove of the guide rail at its narrowing. The minimum width at the narrowing is especially at most 70%, preferably at most 60%, advantageously about 50% of the maximum width of the covering arch. Particularly preferably, the minimum width of the covering arch at the narrowing corresponds to at least 10%, preferably at least 20%, particularly preferably at least 30%, preferably at least 40% of the maximum width of the covering arch. By this design of the covering arch, the covering arch is narrow enough at its narrowing to surround the narrowing by the fixing means. Nevertheless, the cross-section of the covering arch at its narrowing is still large enough to reinforce the housing.

[0074] Advantageously, a locking lever for locking and releasing the operating element is provided. The locking lever preferably has an outer contour that extends in the width of a longitudinal plane perpendicular to the guide rail, wherein this width is especially smaller than the maximum width of the covering arch. Particularly preferably, the covering arch extends from a first longitudinal side to a second longitudinal side, and preferably, the outer contour of the locking lever is completely arranged between the first longitudinal side and the second longitudinal side of the covering arch at least in the region of the first end of the covering arch in the direction of the longitudinal plane perpendicular to the guide rail. The operating element is preferably arranged between the first handle section and the covering arch. Thus, the operating element is at least partially located behind the covering arch.

[0075] Advantageously, it is arranged such that the covering bow has an upper side facing the lower side of the first handle section. Preferably, the housing includes a bridging section, wherein the bridging section extends from the upper side of the covering bow to the lower side of the handle section. The bridging section reinforces the housing of the tree cutter. The operating element is preferably arranged between the bridging section and the first end of the covering bow. The narrowing of the covering bow is preferably arranged between the bridging section and the second end of the covering bow. The second end of the covering bow leads into the fixed section of the housing.

[0076] Advantageously, it is arranged such that a protection device for protecting the battery pack is provided at the fixed section, wherein the battery pack extends in its longitudinal direction from a first end side to a second end side respectively, wherein the first end side of the battery pack faces the fixing device, while the second end side of the battery pack faces away from the fixing device, wherein the protection device includes at least one first covering element, and wherein the first covering element extends at least up to the second end side of the first battery pack in the longitudinal direction of the first battery pack. The first covering element protects the first battery pack from impact loads, for example in the case where the tree cutter falls to the ground. Thus, damage to the first battery pack can be avoided.

[0077] The protection device includes at least one second covering element. The second covering element preferably extends at least up to the second end side of the second battery pack in the longitudinal direction of the second battery pack. Thus, the second covering element protects the second battery pack from impact loads, for example in the case where the tree cutter falls to the ground. Thus, damage to the second battery pack can be avoided.

[0078] Advantageously, it is arranged such that the battery packs are respectively pushed into the fixing device in their longitudinal directions. Particularly preferably, the battery packs are pushed into the fixing device, wherein the first battery pack and the second battery pack respectively have a longitudinal axis extending in the longitudinal direction of the respective battery pack. The longitudinal axis of the battery pack is especially oriented parallel to the longitudinal central plane of the housing. The longitudinal axes of the battery packs can also preferably extend at an angle to each other. The longitudinal axes of the battery packs are particularly preferably located within the longitudinal central plane of the housing. In the transverse direction, the battery packs are preferably arranged one above the other. The transverse direction is advantageously oriented perpendicular to the longitudinal direction of the first battery pack and / or the longitudinal direction of the second battery pack. The transverse direction is preferably located in a plane oriented parallel to the longitudinal central plane of the housing. Thus, in a top view of the tree cutter, the battery packs are stacked one above the other, thereby enabling a particularly slender structure of the tree cutter.

[0079] Advantageously, the battery packs are arranged offset from one another in their longitudinal direction, and the second end sides of the battery packs lie in different planes. Thus, the battery packs are arranged offset from one another in the longitudinal direction. Preferably, the battery packs are arranged at least overlapping one another in the longitudinal direction. Preferably, the planes of the end sides of the first battery pack and the second battery pack extend parallel to one another.

[0080] Advantageously, the protective device includes at least one third covering element. Preferably, the protective device includes at least one fourth covering element. The third covering element preferably extends at least up to the second end side of the battery pack in the longitudinal direction of the battery pack. The fourth covering element preferably extends at least up to the second end side of the battery pack in the longitudinal direction of the battery pack. Particularly advantageously, the third covering element and the fourth covering element extend at least up to the second end side of the battery pack in the longitudinal direction of the battery pack. Thereby, in the inserted state, the battery pack is also protected by the third covering element and the fourth covering element against impact loads.

[0081] Preferably, the battery packs each have a cross-sectional profile that is substantially triangular with rounded corners. The battery packs are preferably constructed identically. The battery packs preferably each have a rear wall constructed between two rounded corners. The battery packs are arranged relative to one another in the fixed section such that the rear walls of the battery packs face each other. In the viewing direction of the longitudinal axis of the battery pack and / or the insertion direction of the battery pack, the contour enclosing the battery pack has a rhombic geometry. With this arrangement, a slender structure of the working device is obtained at the rear end of the working device. Advantageously, the first covering element is arranged at the rounded corner of the first battery pack facing away from the second battery pack. The second covering element is preferably arranged at the rounded corner of the second battery pack facing away from the first battery pack. Thereby, the first covering element and the second covering element at least partially jointly enclose the battery pack, whereby the first covering element also forms an increased robustness for the second battery pack, and the second covering element also forms an increased robustness for the first battery pack.

[0082] Particularly preferably, the third covering element and the fourth covering element are arranged between the battery packs in the transverse direction. The third covering element and the fourth covering element are constructed opposite to one another with respect to a plane oriented parallel to the longitudinal plane of the guide rail. Thus, the third covering element and the fourth covering element form a lateral protection for the battery packs.

[0083] The protective device preferably has a void between the covering elements for gripping the battery pack. Thus, the operator can grip into the void and pull the battery pack out of the fixed section. Preferably, the locking element of the battery pack is arranged in the void, so that the user can operate the unlocking structure and then remove the battery from the device.

[0084] Preferably, a movement gap is provided between the covering element and the battery pack. Preferably, the movement gap narrows in the direction of the first end side of the battery pack. If an impact load is applied to one of the covering elements, the covering element undergoes elastic deformation, whereby most of the impact energy is dissipated through the deformation of the covering element, thereby avoiding damage to the battery pack.

[0085] The third covering element and / or the fourth covering element preferably have an outer side facing away from the battery pack, wherein the outer side has a concave circular portion that projects between the battery packs. Thereby, the third covering element and / or the fourth covering element extend close to the outer contour of the battery pack, thereby improving the protection of the battery pack.

[0086] Advantageously, the housing includes a second handle with a second handle section for supporting the operator's other hand, wherein a limiting device is provided between the second handle section and the guide rail, and the limiting device has a projection extending at least in a longitudinal plane relative to the second handle section, and the projection is configured such that sliding in the direction from the second handle section towards the guide rail is prevented. Thereby, it is ensured that the operator of the tree cutter can firmly hold the second handle of the tree cutter with his other hand. Thereby, the operator can precisely guide the tree cutter and can also perform delicate work on the tree.

[0087] Preferably, the projection is configured such that the projection forms a form-fitting stop for the operator's hand placed on the second handle section in the direction towards the guide rail. This can be particularly advantageous when the working device penetrates into the tree branch. During the main load is borne by the operator's one hand at the first handle, it is thus possible to additionally apply force through the form-fitting stop by the operator's other hand during penetration.

[0088] In a viewing direction perpendicular to the longitudinal plane, the limiting device preferably has an outer contour. The outer contour of the limiting device particularly has a first end adjacent to the second handle section and a second end adjacent to the guide rail. Particularly preferably, a projection of the limiting device is configured at the first end of the outer contour. Thus, the projection is directly adjacent to the second handle section of the second handle. By directly configuring the projection adjacent to the second handle section, the operator can place his other hand with the palm on the second handle section of the tree cutter and at the same time press the side of the hand, i.e., the side of the little finger, against the projection. Thus, the other hand has a firm fit on the second handle of the tree cutter.

[0089] Advantageously, the projection is configured such that it has a contact section with a concave configuration adjacent to the second handle section. The contact section forms an undercut for the hand of the operator that rests against the contact section. Thus, the other hand of the operator is firmly shaped into the undercut of the handle when it is supported on the second handle.

[0090] In particular, it is configured such that, in a viewing direction perpendicular to the longitudinal plane, the projection has a height measured perpendicular to the second handle section at the first end of the outer contour, where the height corresponds to at least 15%, in particular at least 20%, preferably approximately 25% of the length of the second handle section measured in the longitudinal direction of the second handle section.

[0091] Preferably, the housing includes a lubricant tank for supplying lubricant to the saw chain, wherein the limiting device at least partially surrounds the lubricant tank.

[0092] Particularly preferably, the housing is open upwards in the region of the second handle section. This enables the operator to grip and release the second handle section more conveniently.

[0093] Preferably, the contact section is provided with an anti-slip coating. Thereby, the operator has an improved grip on the tree cutter on the second handle section, enabling the operator to work precisely with the tree cutter.

[0094] The present invention is furthermore based on the following task: to provide a robust tree cutter that enables simple handling when carried.

[0095] This task is solved by the tree cutter according to claim 26.

[0096] The tree cutter according to the invention includes a housing and a drive motor, wherein the housing includes a first handle with a first handle section for supporting one hand of the operator, wherein the first handle is associated with a control element for operating the drive motor, and wherein the handle section has an upper side and a lower side facing away from the upper side, wherein the housing includes a covering bow, and wherein the covering bow extends from its first end along the lower side of the first handle section to its second end. Particularly preferably, the covering bow extends substantially parallel to the lower side of the first handle section. The covering bow has a narrowing in the direction towards its second end. For example, the operator can fix the tree cutter at the narrowing, for example at the operator's carrying device, via a spring clip or other fixing means. At the same time, the covering bow forms a reinforcement structure of the housing, whereby the housing is robustly constructed.

[0097] The first end of the covering bow is preferably adjacent to the motor housing of the housing and / or the central housing of the housing. The covering bow preferably has a maximum width measured perpendicular to the longitudinal plane spanned by the guide groove of the guide rail. The longitudinal plane is preferably exactly centered in the guide groove of the guide rail. The covering bow especially has a minimum width measured perpendicular to the longitudinal plane spanned by the guide groove of the guide rail at its narrowing. The minimum width at the narrowing is especially at most 70%, preferably at most 60%, advantageously approximately 50% of the maximum width of the covering bow. Particularly preferably, the minimum width of the covering bow at the narrowing corresponds to at least 10%, preferably at least 20%, particularly preferably at least 30%, preferably at least 40% of the maximum width of the covering bow. With this design of the covering bow, the covering bow is narrow enough at its narrowing to surround the narrowing by the fixing means. Nevertheless, the cross-section of the covering bow at its narrowing is still large enough to reinforce the housing.

[0098] Advantageously, a locking lever for locking and releasing the operating element is provided. The locking lever preferably has an outer contour that extends in the width perpendicular to the longitudinal plane of the guide rail, wherein this width is especially smaller than the maximum width of the covering bow. Particularly preferably, the covering bow extends from a first longitudinal side to a second longitudinal side, and preferably, the outer contour of the locking lever is completely arranged between the first longitudinal side and the second longitudinal side of the covering bow at least in the region of the first end of the covering bow in the direction perpendicular to the longitudinal plane of the guide rail. The operating element is preferably arranged between the first handle section and the covering bow. Thus, the operating element is at least partially located behind the covering bow.

[0099] Advantageously, the covering bow has an upper side facing the lower side of the first handle section. Preferably, the housing includes a bridging section, wherein the bridging section extends from the upper side of the covering bow to the lower side of the handle section. The bridging section reinforces the housing of the tree cutter. The operating element is preferably arranged between the bridging section and the first end of the covering bow. The narrowing of the covering bow is preferably arranged between the bridging section and the second end of the covering bow. The second end of the covering bow leads into the fixing section of the housing.

[0100] Advantageously, a fixing section is provided at the rear end of the housing for receiving a first battery pack for supplying electrical energy to the drive motor. Particularly advantageously, the fixing section is provided for receiving a second battery pack. The second end of the covering bow is preferably formed by the fixing section of the housing.

[0101] Particularly preferably, the drive motor drives a saw chain guided in a guide groove of a guide rail via a drive sprocket, wherein preferably the guide rail is arranged at a front end portion of the housing, and wherein the fixing section is arranged at the housing, particularly at least at the first handle, such that in a state of the tree cutter in which the first battery pack and the second battery pack are arranged at the fixing section, the center of gravity of the tree cutter is located in the first handle.

[0102] The center of gravity of the tree cutter is preferably located in the first handle of the tree cutter, whereby the user grasps the tree cutter at the center of gravity. Thereby, the tipping moment acting around the handle caused by gravity and which has to be compensated by the operator is reduced. Thus, the operator can hold and guide the tree cutter in a simple manner.

[0103] Preferably, it is provided that the guide rail has a longitudinal central axis and a transverse plane oriented orthogonally to the longitudinal plane. The longitudinal central axis is preferably located in the longitudinal plane and in the transverse plane. Preferably, the transverse plane divides the tree cutter into an upper section surrounding the drive motor and a lower section. The center of gravity of the tree cutter is preferably located in the lower section of the tree cutter. Thereby, the tree cutter has a particularly low center of gravity and can be guided by the operator in a simple manner.

[0104] Preferably, the fixing section for the battery pack of the housing is located in the lower section of the tree cutter. Thus, the battery pack is also located in the lower section of the tree cutter in a state of being inserted into the fixing section. Thereby, the center of gravity can be further shifted into the lower section.

[0105] Preferably, the drive motor has a rotational axis, wherein the rotational axis extends parallel to or lies in the longitudinal plane of the guide rail. Thereby, a slender structure of the tree cutter can be achieved.

[0106] Preferably, it is provided that the fixing section is constructed such that the battery pack can be inserted into the fixing section in an insertion direction. Advantageously, the insertion direction substantially corresponds to the longitudinal direction of the first handle. When inserting the battery pack, the operator can hold the tree cutter with one hand and push or pull out the battery pack with the other hand. Since the insertion direction and the longitudinal direction of the handle preferably substantially correspond, the operator can simply apply the reaction force required for pushing in and pulling out the battery pack.

[0107] Preferably, the fixed section is configured such that, in a state where the first battery pack and the second battery pack are inserted into the tree cutter, the distance measured in the direction of the longitudinal central axis between the center of gravity of the first battery pack and the center of gravity of the tree cutter is greater than the distance measured in the longitudinal direction between the center of gravity of the second battery pack and the center of gravity of the tree cutter. Therefore, the battery packs are arranged offset from each other in the direction of the longitudinal central axis. In other words, the distances between the first battery pack and the center of gravity of the tree cutter and between the second battery pack and the center of gravity of the tree cutter are different.

[0108] Advantageously, the fixed section is configured such that, in a state where the first battery pack and the second battery pack are inserted into the tree cutter, the distance measured perpendicular to the transverse plane between the center of gravity of the first battery pack and the center of gravity of the tree cutter is less than the distance measured perpendicular to the transverse plane between the center of gravity of the second battery pack and the center of gravity of the tree cutter. Therefore, the battery packs are arranged offset from each other in the "height", i.e., in the direction perpendicular to the transverse plane.

[0109] Particularly preferably, the operating element is arranged at the first handle. Preferably, the operating element is configured as a lever pivotable about a first pivot axis, wherein the operating element has an outer contour with a maximum first radius with respect to the first pivot axis, and wherein the first radius is greater than the distance between the center of gravity of the tree cutter and the first pivot axis. Preferably, the distance between the operating element and the center of gravity of the tree cutter is not greater than 3 cm, preferably not greater than 2 cm. Therefore, the center of gravity of the tree cutter is particularly close to the operating element. During the proper operation of the tree cutter, the operating element is operated by the index finger of the operator. Thus, the operator holds the handle with his index finger close to the center of gravity of the tree cutter. By surrounding the center of gravity of the tree cutter with the thumb and index finger, the operator can operate the tree cutter in a particularly ergonomic manner.

[0110] Preferably, the housing has a longitudinal central plane extending parallel to the longitudinal plane, wherein the longitudinal central plane divides the housing centrally, and the center of gravity of the tree cutter is located almost within the longitudinal central plane, particularly preferably within the longitudinal central plane of the housing. Therefore, no lateral tipping moment that must be compensated on the operator side is generated.

[0111] Preferably, the housing includes a second handle for supporting the other hand of the operator, and wherein the center of gravity of the tree cutter is configured between the second handle and the operating element associated with the first handle. Preferably, the center of gravity of the tree cutter is configured between the second handle and the operating element with respect to the direction extending perpendicular to the transverse plane of the guide rail.

[0112] Particularly preferably, the tree cutter has a fixing device. The fixing device preferably has at least one first fixing element for holding the tree cutter at a first fixing element. The fixing device is in particular arranged at the handle housing. The operator can fix the tree cutter at a carrying device or the like via the fixing device. The tree cutter can be fixed, for example, at a rope via at least one first fixing element, and the rope is, for example, hung at the operator's carrying device at the other end. If the operator accidentally drops the tree cutter, the tree cutter can be held by the rope. Preferably, the first fixing element is configured as a grommet.

[0113] The fixing device preferably has a second fixing element for holding the tree cutter at a second fixing element. The second fixing element can be used similarly to the first fixing element. The second fixing element is in particular configured as a grommet.

[0114] Advantageously, the housing has a first longitudinal outer side and a second longitudinal outer side. These longitudinal outer sides are preferably arranged opposite each other with respect to a plane oriented parallel to the longitudinal plane of the guide rail. The first fixing element is preferably arranged at the first longitudinal outer side. The second fixing element is preferably arranged at the second longitudinal outer side.

[0115] Preferably, the fixing device is arranged in a fixing section of the housing. The fixing section is in particular part of the handle housing. Thus, the fixing device is closer to the rear end of the tree cutter, whereby the tree cutter is oriented with the guide rail in the direction towards the ground when hanging at the fixing device.

[0116] The fixing device is preferably arranged transversely between the first battery pack and the second battery pack in a state where the first battery pack and the second battery pack are inserted into the tree cutter.

[0117] The fixing device preferably includes a base body. Preferably, the fixing device, in particular the base body of the fixing device, is configured as an integral unit. The base body is preferably configured in a planar shape. By the integral construction of the fixing device, it is preferably possible to transmit high forces to the housing. On the other hand, the fixing device is thus simply constructed and can be manufactured at a reasonable cost.

[0118] Preferably, the housing includes a first housing half and a second housing half, wherein the fixing device is in particular held in a form-fitting manner between the first housing half and the second housing half. Thereby, simple assembly of the tree cutter with respect to the fixing device can be achieved.

[0119] Advantageously, the base body is arranged to extend in the longitudinal direction, wherein fixing elements are constructed at at least one of the longitudinal ends of the base body. Particularly preferably, fixing elements are respectively constructed at the longitudinal ends of the base body. Advantageously, adjacent to the fixing device, the first housing half and the second housing half are connected to each other via a mechanical connection structure. The mechanical connection structure is preferably configured as a threaded connection structure. In an alternative design of the tree cutter, it may also be suitable to provide other mechanical connection structures, such as snap connection structures, riveted connection structures or similar connection structures. Thereby, the forces transmitted from the fixing device to the housing halves can be supported by the mechanical connection structure, in particular by the threaded connection structure. Therefore, the fixing device can absorb high loads.

[0120] Particularly preferably, the fixing device is arranged between the center of gravity of the tree cutter and the rear end of the housing. Preferably, the fixing device is arranged between the center of gravity of the tree cutter and the rear end of the housing with respect to the longitudinal direction of the first handle. If the tree cutter is hung at its fixing device, the tree cutter is oriented by gravity such that the center of gravity of the tree cutter is located below the fixing device. Therefore, the guide rail arranged at the front end of the housing is also oriented towards the ground. On the one hand, this orientation of the tree cutter enables the operator to simply grasp the first handle of the tree cutter from above. If the operator wants to pick up the tree cutter again for work, there is no need to re-grasp the tree cutter with the hands. On the other hand, especially when cutting a tree, it is advantageous that the tree cutter is oriented with the guide rail pointing towards the ground when hung at the fixing device. If the operator pulls the tree cutter upwards towards himself, the tree cutter hangs less with its saw chain in the branches.

[0121] Advantageously, a protection device for protecting the battery pack is provided at the fixing section, wherein the battery pack extends in its longitudinal direction from a first end side to a second end side respectively, wherein the first end side of the battery pack faces the fixing device, while the second end side of the battery pack faces away from the fixing device, wherein the protection device includes at least one first covering element, and wherein the first covering element extends at least up to the second end side of the first battery pack in the longitudinal direction of the first battery pack. The first covering element protects the first battery pack from impact loads, for example in the case where the tree cutter falls to the ground. Therefore, damage to the first battery pack can be avoided.

[0122] The protection device includes at least one second covering element. The second covering element preferably extends at least up to the second end side of the second battery pack in the longitudinal direction of the second battery pack. Therefore, the second covering element protects the second battery pack from impact loads, for example in the case where the tree cutter falls to the ground. Therefore, damage to the second battery pack can be avoided.

[0123] Advantageously, the battery packs are pushed into the fixing device in their longitudinal directions respectively. Particularly preferably, the battery packs are pushed into the fixing device, wherein the first battery pack and the second battery pack each have a longitudinal axis extending in the longitudinal direction of the respective battery pack. The longitudinal axis of the battery pack is in particular oriented parallel to the longitudinal central plane of the housing. The longitudinal axes of the battery packs may also preferably extend at an angle to each other. The longitudinal axes of the battery packs are particularly preferably located within the longitudinal central plane of the housing. In the transverse direction, the battery packs are preferably arranged one above the other. The transverse direction is advantageously oriented perpendicular to the longitudinal direction of the first battery pack and / or the longitudinal direction of the second battery pack. The transverse direction is preferably located within a plane oriented parallel to the longitudinal central plane of the housing. Thus, in a top view of the tree cutter, the battery packs are stacked one above the other, whereby a particularly slender structure of the tree cutter can be achieved.

[0124] Advantageously, the battery packs are arranged offset from each other in their longitudinal directions, and the second end sides of the battery packs are located in different planes. Thus, the battery packs are arranged offset from each other in the longitudinal direction. Preferably, the battery packs are arranged at least overlapping each other in the longitudinal direction. Preferably, the planes of the end sides of the first battery pack and the second battery pack extend parallel to each other.

[0125] Advantageously, the protective device includes at least one third covering element. Preferably, the protective device includes at least one fourth covering element. The third covering element preferably extends in the longitudinal direction of the battery pack at least up to the second end side of the battery pack. The fourth covering element preferably extends in the longitudinal direction of the battery pack at least up to the second end side of the battery pack. Particularly advantageously, the third covering element and the fourth covering element extend in the longitudinal direction of the battery pack at least up to the second end side of the battery pack. Thereby, in the inserted state, the battery packs are also protected by the third covering element and the fourth covering element against impact loads.

[0126] Preferably, the battery packs each have a cross-sectional profile that is substantially triangular with rounded corners. The battery packs are preferably constructed identically. The battery packs preferably each have a rear wall constructed between two rounded corners. The battery packs are arranged relative to one another in the fixed section such that the rear walls of the battery packs face each other. In the viewing direction of the longitudinal axis of the battery pack and / or the insertion direction of the battery pack, the contour enclosing the battery pack has a rhombic geometry. With this arrangement, a slender structure of the working device is obtained at the rear end of the working device. Advantageously, a first covering element is arranged at the rounded corner of the first battery pack facing away from the second battery pack. The second covering element is preferably arranged at the rounded corner of the second battery pack facing away from the first battery pack. Thereby, the first covering element and the second covering element at least partially jointly enclose the battery pack, whereby the first covering element also forms an increased robustness for the second battery pack, and the second covering element also forms an increased robustness for the first battery pack.

[0127] Particularly preferably, a third covering element and a fourth covering element are arranged between the battery packs in the transverse direction. The third covering element and the fourth covering element are constructed to face each other with respect to a plane oriented relative to a longitudinal plane parallel to the guide rail. Thus, the third covering element and the fourth covering element form lateral protection for the battery packs.

[0128] The protection device preferably has a clearance between the covering elements for gripping the battery pack. Thus, the operator can grip into the clearance and pull the battery pack out of the fixed section. Preferably, the locking element of the battery pack is arranged in the clearance, so that the user can operate the unlocking structure and then remove the battery from the device.

[0129] Preferably, it is arranged such that a movement clearance is provided between the covering element and the battery pack. Preferably, the movement clearance narrows in the direction towards the first end side of the battery pack. If an impact load is applied to one of the covering elements, the covering element undergoes elastic deformation, whereby most of the impact energy is dissipated through the deformation of the covering element, so that damage to the battery pack can be avoided.

[0130] The third covering element and / or the fourth covering element preferably have an outer side facing away from the battery pack, wherein the outer side has a concave circular portion that projects between the battery packs. Thereby, the third covering element and / or the fourth covering element extend close to the outer contour of the battery pack, thereby improving the protection of the battery pack.

[0131] Advantageously, it is provided that the housing includes a second handle with a second handle section for supporting the operator's other hand, wherein a limiting device is provided between the second handle section and the guide rail, wherein. The limiting device has a projection extending at least in the longitudinal plane relative to the second handle section, and the projection is configured such that sliding in the direction from the second handle section towards the guide rail is prevented. This ensures that the operator of the tree cutter can firmly hold the second handle of the tree cutter with his other hand. Thereby, the operator can precisely guide the tree cutter and can also perform delicate work on the tree.

[0132] Preferably, the projection is configured such that the projection forms a form-fitting stop for the hand of the operator placed on the second handle section in the direction towards the guide rail. This can be particularly advantageous when the working device penetrates into the tree branch. During the main load being borne by the operator's one hand at the first handle, it is thus possible to additionally apply force via the form-fitting stop by the operator's other hand during penetration.

[0133] In the viewing direction perpendicular to the longitudinal plane, the limiting device preferably has an outer contour. The outer contour of the limiting device in particular has a first end adjacent to the second handle section and a second end adjacent to the guide rail. Particularly preferably, the projection of the limiting device is configured at the first end of the outer contour. Thus, the projection is directly adjacent to the second handle section of the second handle. By directly configuring the projection adjacent to the second handle section, the operator can place his other hand with the palm on the second handle section of the tree cutter and at the same time press the side of the hand, i.e., the side of the little finger, against the projection. Thus, the other hand has a firm fit on the second handle of the tree cutter.

[0134] Advantageously, it is provided that the projection has a concave-shaped abutment section adjacent to the second handle section. The abutment section forms an undercut for the hand of the operator abutting at the abutment section. Thus, the operator's other hand is firmly shaped into the undercut of the handle when resting on the second handle.

[0135] In particular, it is provided that in the viewing direction perpendicular to the longitudinal plane, the projection has a height measured perpendicular to the second handle section at the first end of the outer contour, wherein the height corresponds to at least 15%, in particular at least 20%, preferably approximately 25% of the length of the second handle section measured in the longitudinal direction of the second handle section.

[0136] Preferably, the housing includes a lubricant tank for supplying lubricant to the saw chain, wherein the limiting device at least partially surrounds the lubricant tank.

[0137] Particularly preferably, the housing is open upward in the region of the second handle section. The second handle section can be grasped and released more conveniently by the operator.

[0138] Preferably, the contact section is provided with an anti-slip coating. Thus, the operator has an improved grip on the tree cutter on the second handle section, thereby enabling the operator to work precisely with the tree cutter.

[0139] The invention is further based on the object of specifying a particularly ergonomic tree cutter.

[0140] This object is achieved by a tree cutting machine according to claim 39 .

[0141] The tree cutter according to the present invention comprises a housing and a drive motor, wherein the drive motor drives a saw chain guided in a guide groove of a guide rail to be wound around via a drive sprocket, wherein the guide rail is arranged at a front end of the housing and has a longitudinal plane spanned by the guide groove, wherein the housing comprises a first handle with a first handle section, the first handle is used to support one hand of an operator, wherein the first handle is associated with an operating element for operating the drive motor, wherein the housing comprises a second handle with a second handle section, the second handle is used to support the other hand of the operator, wherein a limiting device is arranged between the second handle section and the guide rail, wherein the limiting device has a protrusion extending at least in the longitudinal plane relative to the second handle section, wherein the protrusion is constructed in such a way as to prevent sliding from the second handle section in the direction of the guide rail.

[0142] This ensures that the operator of the tree cutter has a secure grip on the second handle of the tree cutter with his other hand. As a result, the operator can guide the tree cutter precisely and can also perform delicate work on the tree. The tree cutter can thus be guided in a particularly ergonomic manner.

[0143] Preferably, the projection is designed in such a way that it forms a positive stop for the hand of the operator resting on the second grip section in the direction of the guide rail. This can be advantageous in particular when piercing a branch with the working device. While the main load is borne by one hand of the operator at the first grip, additional force can thus be applied by the other hand of the operator via the positive stop during piercing.

[0144] In an observation direction perpendicular to the longitudinal plane, the limiting device preferably has an outer contour. The outer contour of the limiting device in particular has a first end adjacent to the second handle section and a second end adjacent to the guide rail. Particularly preferably, a projection of the limiting device is formed at the first end of the outer contour. Thus, the projection is directly adjacent to the second handle section of the second handle. By directly forming the projection adjacent to the second handle section, the operator can place the palm of his other hand on the second handle section of the tree cutter, and at the same time press the side of the hand, i.e., the side of the little finger, against the projection. Thus, the other hand has a firm fit on the second handle of the tree cutter.

[0145] Advantageously, it is provided that the projection has a concave-shaped abutment section adjacent to the second handle section. The abutment section forms an undercut for the hand of the operator abutting at the abutment section. Thus, the other hand of the operator is firmly shaped into the undercut of the handle when resting on the second handle.

[0146] In particular, it is provided that in the observation direction perpendicular to the longitudinal plane, the projection has a height measured perpendicular to the second handle section at the first end of the outer contour, where the height corresponds to at least 15%, in particular at least 20%, preferably approximately 25% of the length of the second handle section measured in the longitudinal direction of the second handle section.

[0147] Preferably, the housing includes a lubricant tank for supplying lubricant to the saw chain, wherein the limiting device at least partially surrounds the lubricant tank.

[0148] Particularly preferably, the housing is open upwards in the region of the second handle section. This enables the operator to grip and release the second handle section more conveniently.

[0149] Preferably, the abutment section is provided with an anti-slip coating. Thereby, the operator has an improved grip on the tree cutter on the second handle section, enabling the operator to work precisely with the tree cutter.

[0150] Advantageously, a fixing section is provided at the rear end of the housing, which is used to receive a first battery pack for supplying electrical energy to the drive motor. The fixing section is in particular provided for receiving a second battery pack. The fixing section is preferably arranged on the housing in such a way that, in particular at least on the first handle, in the state of the tree cutter in which the first battery pack and the second battery pack are arranged at the fixing section, the center of gravity of the tree cutter lies in the first handle.

[0151] The center of gravity of the tree cutter is preferably located in the first handle of the tree cutter, whereby the user grasps the tree cutter at the center of gravity. Thereby, the tipping moment caused by gravity and acting around the handle and which must be compensated by the operator is reduced. Therefore, the operator can hold and guide the tree cutter in a simple manner.

[0152] Preferably, the guide rail is arranged such that it has a longitudinal central axis and a transverse plane oriented orthogonally to the longitudinal plane. The longitudinal central axis is preferably located within the longitudinal plane and within the transverse plane. Preferably, the transverse plane divides the tree cutter into an upper section enclosing the drive motor and a lower section. The center of gravity of the tree cutter is preferably located in the lower section of the tree cutter. Thereby, the tree cutter has a particularly low center of gravity and can be guided by the operator in a simple manner.

[0153] Preferably, the fixing section for the battery pack of the housing is located in the lower section of the tree cutter. Thus, the battery pack is also located in the lower section of the tree cutter in the state of being inserted into the fixing section. Thereby, the center of gravity can be further shifted into the lower section.

[0154] Preferably, the drive motor has a rotational axis, wherein the rotational axis extends parallel to or is located within the longitudinal plane of the guide rail. Thereby, a slender structure of the tree cutter can be achieved.

[0155] Preferably, the fixing section is configured such that the battery pack can be inserted into the fixing section in the insertion direction. Advantageously, the insertion direction substantially corresponds to the longitudinal direction of the first handle. When inserting the battery pack, the operator can hold the tree cutter with one hand and push or pull out the battery pack with the other hand. Since the insertion direction preferably substantially corresponds to the longitudinal direction of the handle, the operator can simply apply the reaction force required for pushing in and pulling out the battery pack.

[0156] Preferably, the fixing section is configured such that in the state of the tree cutter with the first battery pack and the second battery pack inserted, the distance measured in the direction of the longitudinal central axis between the center of gravity of the first battery pack and the center of gravity of the tree cutter is greater than the distance measured in the longitudinal direction between the center of gravity of the second battery pack and the center of gravity of the tree cutter. Therefore, the battery packs are arranged offset from each other in the direction of the longitudinal central axis. In other words, the distance between the first battery pack and the center of gravity of the tree cutter is different from the distance between the second battery pack and the center of gravity of the tree cutter.

[0157] Advantageously, the fixed section is configured such that, in a state where the first battery pack and the second battery pack are inserted into the tree cutter, the distance measured perpendicular to the transverse plane between the center of gravity of the first battery pack and the center of gravity of the tree cutter is smaller than the distance measured perpendicular to the transverse plane between the center of gravity of the second battery pack and the center of gravity of the tree cutter. Thus, the battery packs are arranged staggered with respect to each other in the "height", i.e., in the direction perpendicular to the transverse plane.

[0158] Particularly preferably, the operating element is arranged at the first handle. Preferably, the operating element is configured as a lever pivotable about a first pivot axis, wherein the operating element has an outer contour with a maximum first radius with respect to the first pivot axis, and wherein the first radius is greater than the distance between the center of gravity of the tree cutter and the first pivot axis. Preferably, the distance between the operating element and the center of gravity of the tree cutter is not greater than 3 cm, preferably not greater than 2 cm. Thus, the center of gravity of the tree cutter is particularly close to the operating element. During the proper operation of the tree cutter, the operating element is actuated by the index finger of the operator. Thus, the operator holds the handle with his index finger close to the center of gravity of the tree cutter. By surrounding the center of gravity of the tree cutter with the thumb and index finger, the operator can operate the tree cutter in a particularly ergonomic manner.

[0159] Preferably, the housing has a longitudinal central plane extending parallel to the longitudinal plane, wherein the longitudinal central plane divides the housing centrally, and wherein the center of gravity of the tree cutter is located almost within the longitudinal central plane, particularly preferably within the longitudinal central plane of the housing. Thus, no lateral tipping moment that has to be compensated on the operator side is generated.

[0160] Preferably, the housing includes a second handle for supporting the other hand of the operator, and wherein the center of gravity of the tree cutter is configured between the second handle and the operating element associated with the first handle. Preferably, the center of gravity of the tree cutter is configured between the second handle and the operating element with respect to the direction extending perpendicular to the transverse plane of the guide rail.

[0161] Particularly preferably, the tree cutter has a fixing device. The fixing device preferably has at least one first fixing element for holding the tree cutter at a first fixing element. The fixing device is particularly arranged at the handle housing. The operator can fix the tree cutter at a carrying device or the like via the fixing device. The tree cutter can be fixed, for example, at a rope via at least one first fixing element, and the rope is, for example, hung at the carrying device of the operator at the other end. If the operator accidentally drops the tree cutter, the tree cutter can be held by the rope. Preferably, the first fixing element is configured as a grommet.

[0162] The fixing device preferably has a second fixing element for holding the tree cutter at the second fixing element. The second fixing element can be used in a similar manner to the first fixing element. The second fixing element is in particular configured as a noose.

[0163] Advantageously, the housing has a first longitudinal outer side and a second longitudinal outer side. These longitudinal outer sides are preferably arranged opposite one another with respect to a plane oriented parallel to the longitudinal plane of the guide rail. The first fixing element is preferably arranged at the first longitudinal outer side. The second fixing element is preferably arranged at the second longitudinal outer side.

[0164] Preferably, the fixing device is arranged in a fixing section of the housing. The fixing section is in particular part of the handle housing. Thus, the fixing device is closer to the rear end of the tree cutter, whereby the tree cutter is oriented in the direction of the ground with the guide rail hanging at the fixing device.

[0165] The fixing device is preferably arranged transversely between the first battery pack and the second battery pack in a state where the first battery pack and the second battery pack are inserted into the tree cutter.

[0166] The fixing device preferably includes a base body. Preferably, the fixing device, in particular the base body of the fixing device, is configured as an integral body. The base body is preferably configured as planar. Through the integral construction of the fixing device, it is preferably possible to transmit high forces to the housing. On the other hand, the fixing device is thereby simply constructed and can be manufactured in a cost-effective manner.

[0167] Preferably, the housing includes a first housing half and a second housing half, wherein the fixing device is in particular held in a form-fitting manner between the first housing half and the second housing half. Thereby, simple assembly of the tree cutter with respect to the fixing device can be achieved.

[0168] Advantageously, the base body extends in the longitudinal direction, wherein a fixing element is constructed at at least one of the longitudinal ends of the base body. Particularly preferably, fixing elements are respectively constructed at the longitudinal ends of the base body. Advantageously, adjacent to the fixing device, the first housing half and the second housing half are connected to one another via a mechanical connection structure. The mechanical connection structure is preferably configured as a threaded connection structure. In an alternative design of the tree cutter, it may also be suitable to provide other mechanical connection structures, such as snap connection structures, rivet connection structures or similar connection structures. Thereby, the forces transmitted by the fixing device to the housing halves can be supported by the mechanical connection structure, in particular by the threaded connection structure. Thus, the fixing device can absorb high loads.

[0169] Particularly preferably, the fixing device is arranged between the center of gravity of the tree cutter and the rear end of the housing. Preferably, the fixing device is constructed between the center of gravity of the tree cutter and the rear end of the housing with respect to the longitudinal direction of the first handle. If the tree cutter is hung at its fixing device, the tree cutter is oriented by gravity such that the center of gravity of the tree cutter is located below the fixing device. Accordingly, the guide rail arranged at the front end of the housing is also oriented in the direction of the ground. On the one hand, this orientation of the tree cutter enables the operator to simply grasp the first handle of the tree cutter from above. If the operator wants to pick up the tree cutter again for work, there is no need to re-grasp the tree cutter with the hands. On the other hand, particularly when cutting a tree, it is advantageous that the tree cutter is hung at the fixing device and is oriented with the guide rail pointing in the direction of the ground. If the operator pulls the tree cutter upwards towards himself, the saw chain of the tree cutter is less likely to get caught in the branches.

[0170] Advantageously, the first handle is configured to include a first handle section for supporting one hand of the operator, wherein the handle section has an upper side and a lower side facing away from the upper side. The housing preferably includes a covering arch. The covering arch preferably extends from its first end along the lower side of the first handle section to its second end. Particularly preferably, the covering arch extends substantially parallel to the lower side of the first handle section. The covering arch preferably has a narrowing in the direction towards its second end. For example, the operator can fix the tree cutter at the narrowing via a spring clip or other fixing means, for example at the operator's carrying device.

[0171] The first end of the covering arch preferably abuts against the motor housing of the housing and / or the central housing of the housing.

[0172] The covering arch preferably has a maximum width measured perpendicular to the longitudinal plane defined by the guide groove of the guide rail. The longitudinal plane is preferably exactly centered in the guide groove of the guide rail. The covering arch particularly has a minimum width measured perpendicular to the longitudinal plane defined by the guide groove of the guide rail at its narrowing. The minimum width at the narrowing is particularly at most 70%, preferably at most 60%, advantageously approximately 50% of the maximum width of the covering arch. Particularly preferably, the minimum width of the covering arch at the narrowing is at least 10%, preferably at least 20%, particularly preferably at least 30%, preferably at least 40% of the maximum width of the covering arch. With this design of the covering arch, the covering arch is narrow enough at its narrowing to surround the narrowing by the fixing means. Nevertheless, the cross-section of the covering arch at its narrowing is still large enough to reinforce the housing.

[0173] Advantageously, it is arranged such that a locking lever for locking and releasing the actuating element is provided. The locking lever preferably has an outer contour that extends in the width of a longitudinal plane perpendicular to the guide rail, wherein this width is in particular smaller than the maximum width of the covering bow. Particularly preferably, the covering bow extends from a first longitudinal side to a second longitudinal side, and preferably, the outer contour of the locking lever is completely arranged between the first longitudinal side and the second longitudinal side of the covering bow at least in the region of the first end of the covering bow in the direction of the longitudinal plane perpendicular to the guide rail. The actuating element is preferably arranged between the first handle section and the covering bow. Thus, the actuating element is at least partially located behind the covering bow.

[0174] Advantageously, it is arranged such that the covering bow has an upper side facing the lower side of the first handle section. Preferably, the housing includes a bridging section, wherein the bridging section extends from the upper side of the covering bow to the lower side of the handle section. The bridging section reinforces the housing of the tree cutter. The actuating element is preferably arranged between the bridging section and the first end of the covering bow. The narrowing of the covering bow is preferably arranged between the bridging section and the second end of the covering bow. The second end of the covering bow leads into the fixed section of the housing.

[0175] Advantageously, it is arranged such that a protection device for protecting the battery pack is provided at the fixed section, wherein the battery pack extends in its longitudinal direction from a first end side to a second end side respectively, wherein the first end side of the battery pack faces the fixing device, while the second end side of the battery pack faces away from the fixing device, wherein the protection device includes at least one first covering element, and wherein the first covering element extends at least up to the second end side of the first battery pack in the longitudinal direction of the first battery pack. The first covering element protects the first battery pack from impact loads, for example in the case where the tree cutter falls to the ground. Thus, damage to the first battery pack can be avoided.

[0176] The protection device includes at least one second covering element. The second covering element preferably extends at least up to the second end side of the second battery pack in the longitudinal direction of the second battery pack. Thus, the second covering element protects the second battery pack from impact loads, for example in the case where the tree cutter falls to the ground. Thus, damage to the second battery pack can be avoided.

[0177] Advantageously, the battery packs are pushed into the fixing means in their longitudinal directions, respectively. Particularly preferably, the battery packs are pushed into the fixing means, wherein the first battery pack and the second battery pack each have a longitudinal axis extending in the longitudinal direction of the respective battery pack. The longitudinal axis of the battery pack is in particular oriented parallel to the longitudinal central plane of the housing. The longitudinal axes of the battery packs can also preferably extend at an angle to each other. The longitudinal axes of the battery packs are particularly preferably located in the longitudinal central plane of the housing. In the transverse direction, the battery packs are preferably arranged one above the other. The transverse direction is advantageously oriented perpendicular to the longitudinal direction of the first battery pack and / or the longitudinal direction of the second battery pack. The transverse direction is preferably located in a plane oriented parallel to the longitudinal central plane of the housing. Thus, in a top view of the tree cutter, the battery packs are stacked on top of each other, whereby a particularly slender structure of the tree cutter can be achieved.

[0178] Advantageously, the battery packs are arranged offset from each other in their longitudinal directions, and the second end sides of the battery packs are located in different planes. Thus, the battery packs are arranged offset from each other in the longitudinal direction. Preferably, the battery packs are arranged at least overlapping each other in the longitudinal direction. Preferably, the planes of the end sides of the first battery pack and the second battery pack extend parallel to each other.

[0179] Advantageously, the protective means includes at least one third covering element. Preferably, the protective means includes at least one fourth covering element. The third covering element preferably extends at least up to the second end side of the battery pack in the longitudinal direction of the battery pack. The fourth covering element preferably extends at least up to the second end side of the battery pack in the longitudinal direction of the battery pack. Particularly advantageously, the third covering element and the fourth covering element extend at least up to the second end side of the battery pack in the longitudinal direction of the battery pack. Thereby, in the inserted state, the battery packs are also protected by the third covering element and the fourth covering element against impact loads.

[0180] Preferably, the battery packs each have a cross-sectional profile that is substantially triangular with rounded corners. The battery packs are preferably constructed identically. The battery packs preferably each have a rear wall constructed between two rounded corners. The battery packs are arranged relative to one another in the fixing section such that the rear walls of the battery packs face each other. In the viewing direction of the longitudinal axis of the battery pack and / or the insertion direction of the battery pack, the contour enclosing the battery pack has a rhombic geometry. With this arrangement, a slender structure of the working device is obtained at the rear end portion of the working device. Advantageously, a first covering element is arranged at the rounded corner of the first battery pack facing away from the second battery pack. The second covering element is preferably arranged at the rounded corner of the second battery pack facing away from the first battery pack. Thereby, the first covering element and the second covering element at least partially jointly enclose the battery packs, whereby the first covering element also forms an improvement in robustness for the second battery pack, and the second covering element also forms an improvement in robustness for the first battery pack.

[0181] Particularly preferably, the third covering element and the fourth covering element are arranged between the battery packs in the transverse direction. The third covering element and the fourth covering element are arranged opposite to each other with respect to a plane oriented parallel to the longitudinal plane of the guide rail. Thus, the third covering element and the fourth covering element form lateral protection for the battery packs.

[0182] The protection device preferably has a clearance for gripping the battery pack between the covering elements. Thus, the operator can grip into the clearance and pull the battery pack out of the fixing section. Preferably, the locking element of the battery pack is arranged in the clearance, so that the user can operate the unlocking structure and then remove the battery from the device.

[0183] Preferably, it is arranged such that a movement clearance is provided between the covering element and the battery pack. Preferably, the movement clearance narrows in the direction towards the first end side of the battery pack. If an impact load is applied to one of the covering elements, the covering element undergoes elastic deformation, whereby most of the impact energy is dissipated through the deformation of the covering element, so that damage to the battery pack can be avoided.

[0184] The third covering element and / or the fourth covering element preferably have an outer side facing away from the battery packs, wherein the outer side has a concave circular portion that extends between the battery packs. Thereby, the third covering element and / or the fourth covering element extend close to the outer contour of the battery packs, thereby improving the protection of the battery packs.

[0185] The invention also relates to a hand-held working device.

[0186] The handheld working device includes a housing and a drive motor arranged in the housing, wherein the drive motor drives a saw chain to run around a guide rail. Such a working device includes a battery pack for supplying electrical energy to the drive motor.

[0187] The present invention is based on the following task: to provide a handheld working device of this type, which has a robust structure and thus enables an operator to operate the working device in an uncomplicated manner.

[0188] This task is solved by a handheld working device according to claim 49.

[0189] The handheld working device according to the present invention includes a housing with a longitudinal central plane and a drive motor arranged in the housing, wherein a fixed section is provided at the rear end portion of the housing, wherein the fixed section is for receiving a first battery pack for supplying electrical energy to the drive motor, wherein the fixed section is provided for receiving a second battery pack, wherein a protection device for protecting the battery pack is provided at the fixed section, wherein the battery packs each extend in their longitudinal direction from a first end side to a second end side, wherein the first end side of the battery pack faces the fixed section, and the second end side of the battery pack faces away from the fixed section, wherein the protection device includes at least one first covering element, wherein the first covering element extends at least up to the second end side of the first battery pack in the longitudinal direction of the first battery pack. The first covering element protects the first battery pack from impact loads, for example in the case where the working device falls to the ground. Thus, damage to the first battery pack can be avoided. A robust structure of the working device for protecting the battery pack is ensured.

[0190] The protection device includes at least one second covering element. The second covering element preferably extends at least up to the second end side of the second battery pack in the longitudinal direction of the second battery pack. Thus, the second covering element protects the second battery pack from impact loads, for example in the case where the working device falls to the ground. Thus, damage to the second battery pack can be avoided.

[0191] Advantageously, the battery packs are pushed into the fixing device in their longitudinal directions respectively. Particularly preferably, the battery packs are pushed into the fixing device, wherein the first battery pack and the second battery pack each have a longitudinal axis extending in the longitudinal direction of the respective battery pack. The longitudinal axis of the battery pack is in particular oriented parallel to the longitudinal central plane of the housing. The longitudinal axes of the battery packs may also preferably extend at an angle to each other. The longitudinal axes of the battery packs are particularly preferably located in the longitudinal central plane of the housing. In the transverse direction, the battery packs are preferably arranged one above the other. The transverse direction is advantageously oriented perpendicular to the longitudinal direction of the first battery pack and / or the longitudinal direction of the second battery pack. The transverse direction is preferably located in a plane oriented parallel to the longitudinal central plane of the housing. Thus, in a top view of the working device, the battery packs are stacked one above the other, whereby a particularly slender structure of the working device can be achieved.

[0192] Advantageously, the battery packs are arranged offset from each other in their longitudinal directions, and the second end sides of the battery packs are located in different planes. Thus, the battery packs are arranged offset from each other in the longitudinal direction. Preferably, the battery packs are arranged at least overlapping each other in the longitudinal direction. Preferably, the planes of the end sides of the first battery pack and the second battery pack extend parallel to each other.

[0193] Advantageously, the protection device includes at least one third covering element. Preferably, the protection device includes at least one fourth covering element. The third covering element preferably extends at least up to the second end side of the battery pack in the longitudinal direction of the battery pack. The fourth covering element preferably extends at least up to the second end side of the battery pack in the longitudinal direction of the battery pack. Particularly advantageously, the third covering element and the fourth covering element extend at least up to the second end side of the battery pack in the longitudinal direction of the battery pack. Thereby, in the inserted state, the battery pack is also protected by the third covering element and the fourth covering element against impact loads.

[0194] Preferably, the battery packs each have a cross-sectional profile that is substantially triangular with rounded corners. The battery packs are preferably constructed identically. The battery packs preferably each have a rear wall constructed between two rounded corners. The battery packs are arranged relative to each other in the fixing section such that the rear walls of the battery packs face each other. In the viewing direction of the longitudinal axis of the battery pack and / or the insertion direction of the battery pack, the contour enclosing the battery pack has a rhombic geometry. With this arrangement, a slender structure of the working device is obtained at the rear end portion of the working device. Advantageously, a first covering element is arranged at the rounded corner of the first battery pack facing away from the second battery pack. The second covering element is preferably arranged at the rounded corner of the second battery pack facing away from the first battery pack. Thereby, the first covering element and the second covering element at least partially jointly enclose the battery pack, whereby the first covering element also forms an increased robustness for the second battery pack, and the second covering element also forms an increased robustness for the first battery pack.

[0195] Particularly preferably, a third covering element and a fourth covering element are arranged between the battery packs in the transverse direction. The third covering element and the fourth covering element are constructed to face each other with respect to a plane oriented relative to a longitudinal plane parallel to the guide rail. Thus, the third covering element and the fourth covering element form lateral protection for the battery packs.

[0196] The protection device preferably has a clearance for gripping the battery pack between the covering elements. Thus, the operator can grip into the clearance and pull the battery pack out of the fixing section. Preferably, the locking element of the battery pack is arranged in the clearance, so that the user can operate the unlocking structure and then remove the battery from the device.

[0197] Preferably, it is arranged such that a movement clearance is provided between the covering element and the battery pack. Preferably, the movement clearance narrows in the direction towards the first end side of the battery pack. If an impact load is applied to one of the covering elements, the covering element undergoes elastic deformation, whereby most of the impact energy is dissipated through the deformation of the covering element, so that damage to the battery pack can be avoided.

[0198] The third covering element and / or the fourth covering element preferably have an outer side facing away from the battery pack, and the outer side has a concave circular portion that projects between the battery packs. Thereby, the third covering element and / or the fourth covering element extend close to the outer contour of the battery pack, thereby improving the protection of the battery pack.

[0199] Advantageously, the drive motor drives a saw chain guided in a guide groove of a guide rail via a drive sprocket, the guide rail being arranged at the front end of the housing and having a longitudinal plane spanned by the guide groove, the housing including a first handle for supporting an operator's hand, in particular the first handle being associated with an operating element for controlling the drive motor, the fixing section being arranged at the housing, in particular at least at the first handle, such that in a state of the working device in which the first battery pack and the second battery pack are arranged at the fixing section, the center of gravity of the working device is located in the first handle.

[0200] The center of gravity of the working device is located in the first handle of the working device, whereby the user grasps the working device at the center of gravity. Thereby, the tipping moment caused by gravity and acting around the handle and which must be compensated by the operator is reduced. Therefore, the operator can hold and guide the working device in a simple manner.

[0201] Preferably, it is provided that the guide rail has a longitudinal central axis and a transverse plane oriented orthogonally to the longitudinal plane. The longitudinal central axis is preferably located in the longitudinal plane and in the transverse plane. Preferably, the transverse plane divides the working device into an upper section surrounding the drive motor and a lower section. The center of gravity of the working device is preferably located in the lower section of the working device. Thereby, the working device has a particularly low center of gravity and can be guided by the operator in a simple manner.

[0202] Preferably, the fixing section for the battery pack of the housing is located in the lower section of the working device. Thus, the battery pack is also located in the lower section of the working device in a state of being inserted into the fixing section. Thereby, the center of gravity can be further shifted into the lower section.

[0203] Preferably, the drive motor has a rotational axis that extends parallel to or lies in the longitudinal plane of the guide rail. Thereby, a slender structure of the working device can be achieved.

[0204] Preferably, it is provided that the fixing section is constructed such that the battery pack can be inserted into the fixing section in an insertion direction. Advantageously, the insertion direction substantially corresponds to the longitudinal direction of the first handle. When inserting the battery pack, the operator can hold the working device with one hand and push or pull out the battery pack with the other hand. Since preferably the insertion direction and the longitudinal direction of the handle substantially correspond, the operator can simply apply the reaction force required for pushing in and pulling out the battery pack.

[0205] Preferably, the fixing section is configured such that, in a state where the first battery pack and the second battery pack are inserted into the working device, the distance measured in the direction of the longitudinal central axis between the center of gravity of the first battery pack and the center of gravity of the working device is greater than the distance measured in the longitudinal direction between the center of gravity of the second battery pack and the center of gravity of the working device. Therefore, the battery packs are arranged offset from each other in the direction of the longitudinal central axis. In other words, the distances between the first battery pack and the center of gravity of the working device and between the second battery pack and the center of gravity of the working device are different.

[0206] Advantageously, the fixing section is configured such that, in a state where the first battery pack and the second battery pack are inserted into the working device, the distance measured perpendicular to the transverse plane between the center of gravity of the first battery pack and the center of gravity of the working device is less than the distance measured perpendicular to the transverse plane between the center of gravity of the second battery pack and the center of gravity of the working device. Therefore, the battery packs are arranged offset from each other in the "height", i.e., in the direction perpendicular to the transverse plane.

[0207] Particularly preferably, the operating element is arranged at the first handle. Preferably, the operating element is configured as a lever swingable about a first swing axis, and the operating element has an outer contour with a maximum first radius with respect to the first swing axis, and the first radius is greater than the distance between the center of gravity of the working device and the first swing axis. Preferably, the distance between the operating element and the center of gravity of the working device is not greater than 3 cm, preferably not greater than 2 cm. Therefore, the center of gravity of the working device is particularly close to the operating element. During the proper operation of the working device, the operating element is operated by the index finger of the operator. Therefore, the operator holds the handle with his index finger close to the center of gravity of the working device. By surrounding the center of gravity of the working device with the thumb and index finger, the operator can operate the working device in a particularly ergonomic manner.

[0208] Preferably, the housing has a longitudinal central plane extending parallel to the longitudinal plane, wherein the longitudinal central plane divides the housing into two equal parts in the middle, and the center of gravity of the working device is almost located within the longitudinal central plane, particularly preferably within the longitudinal central plane of the housing. Therefore, no lateral tipping moment that must be compensated on the operator side is generated.

[0209] Preferably, the housing includes a second handle for supporting the other hand of the operator, and the center of gravity of the working device is configured between the second handle and the operating element associated with the first handle. Preferably, the center of gravity of the working device is configured between the second handle and the operating element in the direction extending perpendicular to the transverse plane of the guide rail.

[0210] Particularly preferably, the working device has a fixing device. The fixing device preferably has at least one first fixing element for holding the working device at a first fixing member. The fixing device is particularly arranged at the handle housing. The operator can fix the working device at a carrier device or the like via the fixing device. The working device can be fixed, for example, at a rope via at least one first fixing element, and the rope is hung, for example, at the carrier device of the operator at the other end. If the operator accidentally drops the working device, the working device can be held by the rope. Preferably, the first fixing element is configured as a grommet.

[0211] The fixing device preferably has a second fixing element for holding the working device at a second fixing member. The second fixing element can be used similarly to the first fixing element. The second fixing element is particularly configured as a grommet.

[0212] Advantageously, the housing has a first longitudinal outer side and a second longitudinal outer side. These longitudinal outer sides are preferably arranged opposite to each other with respect to a plane oriented parallel to the longitudinal plane of the guide rail. The first fixing element is preferably arranged at the first longitudinal outer side. The second fixing element is preferably arranged at the second longitudinal outer side.

[0213] Preferably, the fixing device is arranged in a fixing section of the housing. The fixing section is particularly a part of the handle housing. Thus, the fixing device is closer to the rear end portion of the working device, whereby the working device is oriented in the direction of the ground with the guide rail hanging at the fixing device.

[0214] The fixing device is preferably arranged transversely between the first battery pack and the second battery pack in a state where the first battery pack and the second battery pack are inserted into the working device.

[0215] The fixing device preferably includes a base body. Preferably, the fixing device, particularly the base body of the fixing device, is configured as an integral body. The base body is preferably configured as planar. Through the integral construction of the fixing device, it is preferably possible to transmit high forces to the housing. On the other hand, the fixing device is thus simply constructed and can be manufactured at a reasonable cost.

[0216] Preferably, the housing includes a first housing half and a second housing half, and the fixing device is particularly held in a form-fitting manner between the first housing half and the second housing half. Thereby, simple assembly of the working device with respect to the fixing device can be achieved.

[0217] Advantageously, the base body is arranged to extend in the longitudinal direction, wherein fixing elements are configured at at least one of the longitudinal ends of the base body. Particularly preferably, fixing elements are respectively configured at the longitudinal ends of the base body. Advantageously, adjacent to the fixing means, the first housing half and the second housing half are interconnected by a mechanical connection structure. The mechanical connection structure is preferably configured as a threaded connection structure. In an alternative design of the working device, it may also be suitable to provide other mechanical connection structures, such as snap connection structures, riveted connection structures or similar connection structures. Thereby, the forces transmitted by the fixing means to the housing halves can be supported by the mechanical connection structure, in particular by the threaded connection structure. Thus, the fixing means is capable of absorbing high loads.

[0218] Particularly preferably, the fixing means is arranged between the center of gravity of the working device and the rear end of the housing. Preferably, the fixing means is arranged relative to the longitudinal direction of the first handle between the center of gravity of the working device and the rear end of the housing. If the working device is hung at its fixing means, the working device is oriented by gravity such that the center of gravity of the working device is located below the fixing means. Thus, the guide rail arranged at the front end of the housing is also oriented in the direction of the ground. On the one hand, this orientation of the working device enables the operator to simply grasp the first handle of the working device from above. If the operator wants to pick up the working device again for work, there is no need to re-grasp the working device with the hand. On the other hand, especially when performing cutting work on a tree, it is advantageous that the working device is oriented with the guide rail pointing in the direction of the ground when hung at the fixing means. If the operator pulls the working device upwards towards himself, the working device hangs less with its saw chain at the branches.

[0219] Advantageously, the first handle includes a first handle section for supporting one hand of the operator, wherein the handle section has an upper side and a lower side facing away from the upper side. The housing preferably includes a covering arch. The covering arch preferably extends from its first end along the lower side of the first handle section to its second end. Particularly preferably, the covering arch extends substantially parallel to the lower side of the first handle section. The covering arch preferably has a narrowing in the direction towards its second end. For example, the operator can fix the working device at the narrowing, for example at the operator's carrying device, via a spring clip or other fixing means.

[0220] The first end of the covering arch preferably abuts against the motor housing of the housing and / or the central housing of the housing.

[0221] The covering bow preferably has a maximum width measured perpendicular to the longitudinal plane spanned by the guide groove of the guide rail. The longitudinal plane is preferably located exactly in the middle of the guide groove of the guide rail. The covering bow especially has a minimum width measured perpendicular to the longitudinal plane spanned by the guide groove of the guide rail at its constriction. The minimum width at the constriction is especially at most 70%, preferably at most 60%, advantageously approximately 50% of the maximum width of the covering bow. Particularly preferably, the minimum width of the covering bow at the constriction corresponds to at least 10%, preferably at least 20%, particularly preferably at least 30%, preferably at least 40% of the maximum width of the covering bow. With this design of the covering bow, the covering bow is narrow enough at its constriction to surround the constriction by the fixing device. Nevertheless, the cross-section of the covering bow at its constriction is still large enough to reinforce the housing.

[0222] Advantageously, a locking lever for locking and releasing the operating element is provided. The locking lever preferably has an outer contour that extends in the width perpendicular to the longitudinal plane of the guide rail, and this width is especially smaller than the maximum width of the covering bow. Particularly preferably, the covering bow extends from the first longitudinal side to the second longitudinal side. Preferably, the outer contour of the locking lever is completely arranged between the first longitudinal side and the second longitudinal side of the covering bow at least in the region of the first end of the covering bow in the direction perpendicular to the longitudinal plane of the guide rail. The operating element is preferably arranged between the first handle section and the covering bow. Thus, the operating element is at least partially located behind the covering bow.

[0223] Advantageously, the covering bow has an upper side facing the lower side of the first handle section. Preferably, the housing includes a bridging section, where the bridging section extends from the upper side of the covering bow to the lower side of the handle section. The bridging section reinforces the housing of the working device. The operating element is preferably arranged between the bridging section and the first end of the covering bow. The constriction of the covering bow is preferably arranged between the bridging section and the second end of the covering bow. The second end of the covering bow leads into the fixing section of the housing.

[0224] Advantageously, the housing includes a second handle with a second handle section for supporting the operator's other hand. A limiting device is provided between the second handle section and the guide rail. The limiting device has a projection that extends at least in the longitudinal plane with respect to the second handle section, and the projection is configured such that sliding in the direction from the second handle section towards the guide rail is prevented. This ensures that the operator of the working device can firmly hold the second handle of the working device with his other hand. Thereby, the operator can precisely guide the working device and can also perform delicate work on the tree.

[0225] Preferably, the raised portion is configured such that it forms a form-fitting stop for the hand of the operator placed on the second handle section in the direction of the guide rail. This can be particularly advantageous when the working device is driven into a tree branch. During the main load being borne by one hand of the operator at the first handle, it is thus possible, in particular, to additionally apply force during the penetration by the other hand of the operator via the form-fitting stop.

[0226] In the viewing direction perpendicular to the longitudinal plane, the limiting device preferably has an outer contour. The outer contour of the limiting device in particular has a first end adjacent to the second handle section and a second end adjacent to the guide rail. Particularly preferably, a raised portion of the limiting device is configured at the first end of the outer contour. Thus, the raised portion is directly adjacent to the second handle section of the second handle. By directly configuring the raised portion adjacent to the second handle section, the operator can place the palm of the other hand on the second handle section of the working device and at the same time press the side of the hand, i.e., the side of the little finger, against the raised portion. Thus, the other hand has a firm fit on the second handle of the working device.

[0227] Advantageously, it is provided that the raised portion has a concave-shaped abutment section adjacent to the second handle section. The abutment section forms an undercut for the hand of the operator abutting at the abutment section. Thus, the other hand of the operator is firmly shaped into the undercut of the handle when resting on the second handle.

[0228] In particular, it is provided that in the viewing direction perpendicular to the longitudinal plane, the raised portion has a height measured perpendicular to the second handle section at the first end of the outer contour, where the height corresponds to at least 15%, in particular at least 20%, preferably approximately 25% of the length of the second handle section measured in the longitudinal direction of the second handle section.

[0229] Preferably, the housing includes a lubricant tank for supplying lubricant to the saw chain, wherein the limiting device at least partially surrounds the lubricant tank.

[0230] Particularly preferably, the housing is open upwards in the region of the second handle section. This enables the operator to more conveniently grasp and release the second handle section.

[0231] Preferably, the abutment section is provided with an anti-slip coating. Thereby, the operator has an improved grip on the working device on the second handle section, enabling the operator to precisely work with the working device.

[0232] The invention relates to a hand-guided working device, such as a hedge trimmer, a chain saw or a similar working device.

[0233] Such hand-guided working devices widely employ a mechanical operating concept in which, during normal operation, at least two operating elements need to be manipulated on the user side to control the power of the drive motor. For example, the first operating element can be the throttle lever of an internal combustion engine or the power lever of an electric drive motor. In the unmanipulated rest position, the throttle lever or the power lever is in the idle position. When pressed into the manipulated position, the rotational speed of the drive motor increases to the operating speed, with a corresponding increase in power, so that the corresponding tool is driven at the operating speed.

[0234] In this regard, the second operating element can be a so-called throttle lever lock, which is held in the unmanipulated position by a spring. In its unmanipulated position, the second operating element prevents the first operating element from moving in the direction of its manipulated position, thus preventing accidental fuel supply or switching on. Only by actively manipulating the second operating element against the force of the above-mentioned spring is the first operating element released, so that it can be brought into the manipulated position, with the corresponding power position of the drive motor.

[0235] In actual operation, such a working device is held in different orientations in order to be able to perform, for example, horizontal or vertical cutting. This usually also involves the user changing the position of their hand relative to the handle. However, both operating elements must be accessible to the user.

[0236] A hand-guided working device with such an operating concept is known from EP3792006A1, in which the locking lever acting on the power lever is provided with wing-shaped elements for manipulation. One wing-shaped element projects from each side of the device housing, so that the locking lever can be manipulated from both sides. Centrally between the wing-shaped elements, the locking lever is provided with a manipulation profile against which a leaf spring bears under a pre-tensioning force. Thereby, the locking lever is brought back to its unmanipulated initial position when released. In the working device shown, this arrangement has proven itself. However, the leaf spring requires a certain minimum structural length, which is added to the axial structural length of the locking lever. In addition, it is difficult to adapt to other gripping forms with other hand grips, because due to the interaction with the leaf spring, the wing-shaped elements cannot be structurally freely positioned.

[0237] The present invention is based on the following task: to provide a hand-guided working device with a more compact structural form of its locking mechanism.

[0238] This task is solved by a hand-guided working device having the features of claim 62.

[0239] According to the present invention, a hand-guided working device is provided, which has at least one tool, a drive motor for driving the at least one tool, a housing, a first operating element configured to control the drive motor, and a second operating element pivotably supported relative to the housing about a pivot axis between a non-operated position and at least one operated position. Here, the second operating element prevents the first operating element from moving in the direction of the operating position of the first operating element in its non-operated position, and the second operating element is held in the non-operated position by a spring. The spring has a clamping section fixedly held at the housing, and the spring has an operating section interacting with the operating profile of the second operating element. The second operating element has at least one operating section configured to be operated by an operator, and the operating section has a connecting area where the operating section extends out of the opening of the housing to the outside of the housing. The connecting area of the operating section extends from a first plane extending perpendicular to the pivot axis to a second plane extending perpendicular to the pivot axis and does not extend beyond the plane here. The mentioned planes sandwich the operating section area of the working device, and the clamping section and the operating section extend at least partially on opposite sides of the operating section area. In particular, the clamping section and the operating section are completely arranged outside the operating section area.

[0240] The present invention starts from the recognition that the spring is crucial in terms of its structural length and cannot be less than the minimum structural length of the spring, so that excessive stress does not occur under a given spring stroke. Through the above-defined arrangement, it is achieved that one end of each spring is positioned before or after the operating section. Therefore, the second operating element acting as a locking element actually does not require an additional structural length for the entire arrangement. On the contrary, the structural length of the locking lever arrangement is basically reduced to the technical minimum of the spring length. In addition, a so-called "through-insertion" structure can be achieved, in which the spring is located inside the locking element and thus does not conflict with the positioning of one or more operating sections. The operating sections can be freely positioned from an ergonomic perspective, so that the accessibility of these operating sections in different working grips can be improved.

[0241] In a preferred improvement of the present invention, the spring is configured as a leaf spring and extends out of the clamping section in the direction of the central plane, where the central plane encloses an angle of at least 10°, especially at least 15°, with the pivot axis of the second operating element.

[0242] This achieves that the leaf spring extends at a small distance and substantially parallel to the support axis of the second operating element at its end opposite the clamping section due to its pre-tensioned bending line, and only a small radial structural space is required in this area. In addition, the inclined position facilitates the dropping of possible contaminants that may enter, so that the arrangement remains trouble-free for a long time even under harsh working conditions.

[0243] Preferably, the opening is at least partially covered by the covering section of the second operating element, wherein the connecting area of the operating section is arranged at the covering section. Thereby, it becomes more difficult for impurities to enter through the housing opening in different positions of the second operating element.

[0244] Suitably, the spring has at least its own contact section in the contact area with the operating profile in the operating section, which is bent away from the operating profile in the circumferential direction relative to the swing axis, wherein the contact section is arranged outside the covering section. Due to the bent shape, the contact section can easily slide on the operating profile without colliding with the covering section in a highly bent state here.

[0245] In an advantageous refinement, the spring extends between the covering section and the swing axis. Here, the covering section covers the middle area of the spring towards the outside of the housing. In particular, the covering section extends in an arc around the swing axis over an angular range of at least 120°. Preferably, the operating section clamps an angle of at least 30° with the covering section at the connecting area. Appropriately, the operating profile and the covering section delimit an opening through which the spring projects. Advantageously, the second operating element has a support axis that extends from the first support pin to the second support pin in the viewing direction of the swing axis of the first operating element, wherein the first operating element and the spring are arranged on opposite sides of the support axis of the second operating element. The above features contribute to a compact and dirt-resistant structural form.

[0246] In a preferred refinement, the operating profile has at least one convex arched section. In particular, the operating profile has two convex arched sections in the non-operated position of the second operating element, where the spring abuts against the two convex arched sections. This achieves a clean and clearly defined reset position from which a certain finger force is required to bring the second operating element into the operating position. The course of the convex arching ensures that the operating force does not increase excessively with increasing offset.

[0247] Advantageously, the first operating element is pivotably supported relative to the housing between the non-operated position and the operated position about the swing axis, wherein the swing axis of the first operating element and the swing axis of the second operating element are inclined to each other, in particular extend perpendicular to each other. This conforms to ergonomic operation.

[0248] It may be sufficient for the second operating element to have only a single unique operating section. In a preferred embodiment, the second operating element has at least two operating sections protruding from the housing and in particular also has three operating sections protruding from the housing. Thereby, even with different device grips, the user can reach at least one of the operating elements well. Description of the Drawings

[0249] Other features of the invention result from the description and the drawings, in which embodiments of the invention are depicted that are described in detail below. Among them:

[0250] Figure A1 One embodiment of the working device according to the invention is shown in perspective;

[0251] Figure A2 Another embodiment of the working device according to the invention is shown in side view;

[0252] Figure A3 Shown in top view according to Figure A2 the working device;

[0253] Figure A4 shows the working device according to Figure A2 in a side sectional view along the longitudinal central plane of the housing;

[0254] Figure A5 shows the working device with the handle housing open in a partial perspective view from the rear;

[0255] Figure A6 shows the working device according to Figure A2 in a perspective view from the rear;

[0256] Figure A7 shows again the working device according to Figure A2 in a side view;

[0257] Figure A8 Shown in a view from below according to Figure A2 the working device;

[0258] Figure A9 A battery pack for the working device according to the invention is shown in a schematic perspective view;

[0259] Figure A10 Shown in a view from the rear according to Figure A2 the working device;

[0260] Figure A11 Shown in top view according to Figure A2 the working device;

[0261] Figure A12 shows the working device according to in a sectional view through the fixing device with the working device inserted in the viewing direction from aboveFigure A2 Working device;

[0262] Figure A13 shows in a partial perspective view a working device with only one housing half according to Figure A2 ;

[0263] Figure A14 shows in a partial perspective view a fixing device fixed in the housing half of a working device according to Figure A2 ;

[0264] Figure A15 shows in a partial side view a working device according to the invention with a limiting device;

[0265] Figure A16 shows in a perspective view a working device without a battery pack according to Figure A2 ;

[0266] Figure A17 shows in a perspective view another embodiment of a working device according to the invention without a protection device;

[0267] Figure A18 shows in a side view another embodiment of a hand-guided working device 1 with fastening means;

[0268] Figure A19 shows in a partial side view a fastening device arranged on a battery pack according to Figure A18 ;

[0269] Figure A20 shows in a side view a fastening device according to Figure A18 ;

[0270] Figure A21 shows in a view from below a fastening device according to Figure A18 ;

[0271] Figure A22 shows in a side view another embodiment of a fastening device.

[0272] Figure B1 shows in a perspective view a working device implemented according to the invention, for example a chainsaw, which has a first operating element for controlling a drive motor and a second operating element for locking the first operating element;

[0273] Figure B2 shows in a perspective internal view the handle according to Figure B1, with details of the arrangement structure for the two operating elements;

[0274] Figure B3 shows in a longitudinal sectional view the arrangement structure according to Figure B1;

[0275] Figure B4The arrangement according to FIG. B2 is shown in a side view, with additional details for the arrangement of the operating elements;

[0276] Figure B5 The arrangement according to Figure B4 is shown in a partial cross - section;

[0277] Figure B6 The arrangement according to FIG. B2 is shown, in which the second operating element has been swung into the operating position;

[0278] Figure B7 The arrangement according to FIG. B3 is shown, in which the second operating element has been swung into the operating position;

[0279] Figure B8 The arrangement according to Figure B4 is shown, in which the second operating element has been swung into the operating position;

[0280] Figure B9 The arrangement according to Figure B5 is shown, in which the second operating element has been swung into the operating position;

[0281] FIG. B10 shows the arrangement according to FIG. B2 in a view from the rear, with details for the angular extension of the second operating element;

[0282] FIG. B11 shows the arrangement according to FIG. B2 in a front view, with details for the position of the swing axes of the two operating elements; and

[0283] FIG. B12 shows a variant of the arrangement according to FIG. B2 in a perspective view, in which the housing opening is enlarged and there are a total of three operating sections at the second operating element. DETAILED DESCRIPTION

[0284] In Figure A1 an embodiment of the working device 1 according to the invention is shown. In the present embodiment, the hand - held working device 1 is configured as a tree cutter. A tree cutter is a motor - operated saw, which is preferably provided for cutting branches and small trees. The preferred application of a tree cutter is in particular trimming the branches of a tree. In an alternative embodiment, the working device 1 can also be configured as a hedge trimmer, a blower or a similar device. In addition, the working device 1 can also be configured as a working device with a handle, such as a pole saw, a hedge cutter, a free cutter, a lawn mower, a motor scythe or a similar device. The term "hand - held" should be understood such that, in the intended operation, the working device is held by the operator.

[0285] The working device 1 comprises a housing 2. The working device 1 comprises a drive motor 3. The drive motor 3 is arranged in the housing 2. In addition, the working device comprises a tool, wherein the tool is driven via the drive motor 3. In the present embodiment, the tool is a saw chain 5. The saw chain 5 is driven in a guide groove of a guide rail 4 to be looped. The drive motor 3 drives a drive sprocket via its drive shaft, and the drive sprocket in turn drives the saw chain 5 to be looped around the guide rail 4. Figure A2 As shown in , a transport protection device 71 is pushed onto the guide rail 4, which surrounds the saw chain 5 and protects it from damage. In the present embodiment, the drive motor 3 is configured as an electric motor. The working device 1 includes a first battery pack 21. The first battery pack 21 is configured to supply electrical energy to the drive motor 3. The working device 1 includes a second battery pack 22. The second battery pack 22 is configured to supply electrical energy to the drive motor 3. The working device 1, in particular the drive motor 3 of the working device 1, can also preferably be operated via only one of the two battery packs 21, 22. However, in a preferred embodiment, the two battery packs 21, 22 are connected in series.

[0286] like Figure A1 As shown in , the guide rail 4 comprises a longitudinal plane 31 which is spanned by the guide groove of the guide rail 4. In addition, the guide rail 4 comprises a longitudinal center axis 30. The longitudinal center axis 30 is located in the longitudinal plane 31. The longitudinal center axis 30 extends centrally through the guide rail 4, whereby in a viewing direction perpendicular to the longitudinal plane 31 of the guide rail 4, the guide rail 4 is roughly divided into two equally large parts by the longitudinal center axis 30. In addition, the guide rail 4 comprises a transverse plane 32. The transverse plane 32 is oriented orthogonally to the longitudinal plane 31 of the guide rail 4. The longitudinal center axis 30 is located in the transverse plane 32.

[0287] like Figure A1 As shown in FIG. 1 , the housing 2 has a front end 6 and a rear end 7. The guide rail 4 is arranged at the front end 6 of the housing 2. A fixing section 14 is provided at the rear end 7 of the housing 2. The fixing section 14 is provided for receiving a first battery pack 21. The fixing section 14 is also provided for receiving a second battery pack 22.

[0288] like Figure A1As shown, the housing 2 includes a central housing 47. The front end portion 6 of the housing 2 is configured at the central housing 47. The guide rail 4 projects from the central housing 47 at the front end portion 6 of the housing 2 and extends from the rear end portion 7 of the housing 2 towards the front end portion 6 of the housing 2. The working device 1 includes a guide rail fixing device 75 for fixing the saw chain 5. In the operating state of the guide rail fixing device 75, the guide rail 4 is held clamped at the housing 2, in particular at the central housing 47. In the disengaged state of the guide rail fixing device 75, the guide rail 4 can move relative to the housing 2 in the direction of the longitudinal central axis 30. The guide rail 4 can be pushed away from the housing 2 in the direction of its longitudinal central axis 30, whereby the saw chain 5 can be tensioned. If the guide rail fixing device 75 is advantageously closed by means of a threaded connection structure, the guide rail 4 is held clamped at the housing 2.

[0289] As Figure A1 As shown, the housing 2 of the working device 1 includes a motor housing 49. The drive motor 3 is arranged in the motor housing 49. In addition, the housing 2 includes a handle housing 48. The working device 1 includes a first handle 9 for supporting an operator's hand. The first handle 9 is configured at the housing 2, in particular at the handle housing 48 of the housing 2. The rear end portion 7 of the housing 2 is preferably configured at the handle housing 48. The fixing section 14 is a part of the handle housing 48. The central housing 47, the handle housing 48 and the motor housing 49 of the housing 2 are arranged adjacent to each other.

[0290] As Figure A1 As shown, the working device 1 includes a control element 10 for operating the drive motor 3. The control element 10 is associated with the first handle 9, that is to say, in the proper operation of the working device 1, the operator operates the control element 10 with the hand supported on the first handle 9. The working device 1 includes a (preferably mechanical) locking lever 26. The locking lever 26 is configured to (preferably mechanically) lock the control element 10 in the locked position and release the control element in the operating position. If the operator wants to operate the control element 10, the operator must first unlock the control element 10 by operating the locking lever 26. Subsequently, the operator can operate the control element 10 and control the drive motor 3.

[0291] As Figure A1As shown in the figure, the working device 1 includes a covering bow portion 101. The covering bow portion 101 is a part of the housing 2. The covering bow portion 101 surrounds the operating element 10 and is used to reinforce the housing 2. In addition, the working device includes a fixing device 11. The fixing device 11 has at least one fixing element 12, which is used to hold the working device 1 at the at least one fixing element 12. Thus, for example, it is feasible for the operator to fix the working device 1 to a rope via the fixing element 12, thereby preventing the working device 1 from falling to the ground. A particularly preferred embodiment of the working device 1 has a protection device 80. The protection device 80 is constructed such that, for example, in the case where the working device 1 collides with the ground, the battery packs 21, 22 are protected from impact loads. Therefore, damage to the battery packs 21, 22 can be avoided.

[0292] As Figure A1 As shown in the figure, the working device 1 includes a second handle 57. The second handle 57 is provided for supporting the operator's other hand. The second handle 57 is constructed at the housing 2, especially at the motor housing 3. The working device 1 further includes a limiting device 60. The limiting device 60 is arranged between the guide rail 4 and the second handle 57. The limiting device 60 is constructed such that the operator's hand is prevented from sliding from the second handle 57 towards the guide rail 4.

[0293] In Figure A2 Another embodiment of the working device 1 according to the present invention is shown in a side view in the figure. The working device 1 includes a center of gravity S1. In the state where the first battery pack 21 and the second battery pack 22 are arranged at the fixing section 14, the center of gravity S1 is located in the first handle 9 of the working device 1. This weight distribution of the working device 1 is particularly advantageous because during the preset operation of the working device 1, the operator holds the first handle 9 with one of his hands and thus also encloses the center of gravity S1. Thereby, the operator can hold the working device 1 in an easy manner without having to balance the overturning moment of the working device 1. During the operation of the working device 1, an uncomfortable inertial moment is also avoided. In a preferred embodiment of the working device 1, especially the fixing section 14 is constructed at the housing 2 such that the first battery pack 21 and the second battery pack 22 are suitably arranged at the housing 2, whereby the center of gravity S1 of the working device 1 is located in the first handle 9.

[0294] As Figure A2As shown in the figure, the first handle 9 extends along the longitudinal direction 35. The longitudinal direction 35 of the first handle 9 corresponds to the direction of the longitudinal central axis 54 of the first handle 9. The first handle 9 includes a gripping area 53 in which the handle 9 can be completely gripped. In this gripping area 53, the handle 9, in particular the handle housing 48, is configured to be cylindrical. The axis of the cylinder corresponds here to the longitudinal central axis 54 of the first handle 9. The handle 9 itself extends along its longitudinal central axis from the rear end 77 to the front end 76. The rear end 77 faces the rear end 7 of the housing 2. The front end 76 faces the front end 6 of the housing 2. The front end 6 of the handle 9 is determined by the section at the handle housing 48 where the handle 9 can still be completely gripped by the operator's hand. The front end 6 is marked by a dashed line along which the operator's index finger can grip the handle housing 48. As Figure A2 shown in the figure, the center of gravity S1 of the working device 1 is thus located not far in front of the front end 6 of the handle 9, so that the operator can enclose the center of gravity S1 of the working device 1 with his index finger during the preset operation of the working device 1. In the current embodiment, the rear end 77 of the handle 9 is formed by a protrusion 78 relative to the gripping surface of the handle 9. In the current embodiment, the protection device 80 abuts against the protrusion 78.

[0295] As Figure A2 shown in the figure, the transverse plane 32 of the guide rail 4 divides the housing 2 into an upper section 36 and a lower section 37. The drive motor 3 is arranged with its center of gravity SM in the upper section 36. The center of gravity S1 of the working device 1 is located in the lower section. In addition, Figure A2 the position vector g and the horizontal flat ground 112 are drawn in the figure. The longitudinal central axis 30 of the guide rail 4 lies in a plane oriented parallel to the ground 112. The first battery pack 21 and the second battery pack 22 are also arranged in the lower section. The first battery pack 21 has a center of gravity SA1. The second battery pack 22 has a center of gravity SA2. The centers of gravity SA1, SA2 of the two battery packs 21, 22 are arranged in the lower section 37 of the housing 2. Thus, the centers of gravity SA1, SA2 of the battery packs 21, 22 form a weight balance relative to the center of gravity SM of the drive motor 3. In the current embodiment, the fixed section 14 of the housing 2 is also located in the lower section 37 of the working device 1.

[0296] As Figure A3 shown in the figure, the working device 1 includes a longitudinal central plane 43. The longitudinal central plane 43 extends parallel to the longitudinal plane 31 of the guide rail 4 and intersects the housing 2 centrally. The housing 2 preferably has two housing halves, a first housing half 15 and a second housing half 16. The dividing plane of the first housing half 15 and the second housing half 16 preferably corresponds to the longitudinal central plane 43 of the working device 1.

[0297] As Figure A3As shown, the centers of gravity SA1, SA2 of the accumulator packs 21, 22 are preferably arranged on the longitudinal center plane 43. The working device 1 is designed such that the center of gravity S1 of the working device 1 lies on the longitudinal center plane 43. The drive motor 3 is arranged in the housing 2, in particular in the motor housing 49, such that the center of gravity SM of the drive motor 3 also lies within the longitudinal center plane 43 of the working device 1. For this purpose, the drive motor 3 is oriented such that its axis of rotation 33 (Figure A4) extends parallel to the longitudinal plane 31 of the guide rail 4 or preferably lies within the longitudinal plane 31 of the guide rail 4. In the present embodiment, the axis of rotation 33 lies within the longitudinal center plane 43 of the working device 1.

[0298] As shown in Figure A4, the fixed section 14 is constructed such that the accumulator packs 21, 22 can be inserted into the fixed section 14 in the insertion direction 34. The insertion direction 34 preferably corresponds essentially to the longitudinal direction 35 of the first handle 9. In order to fix the accumulator packs 21, 22 in the fixed section 14 of the housing 2, they need to be introduced in the insertion direction 34 until they come into contact with the stop elements 23, 24. The first stop element 23 of the fixed section 14 limits the movement of the first accumulator pack 21 in the insertion direction 34. The second stop element 24 limits the movement of the second accumulator pack 22 in the insertion direction 34. In a preferred embodiment, a latching connection structure is provided between the fixed section 14 and the accumulator packs 21, 22, which latches when the accumulator packs 21, 22 are inserted. At each accumulator pack 21, 22 there are provided two unlocking elements 111( Figure A2 ), when these unlocking elements are actuated, the latching connection structure between the accumulator packs 21, 22 and the fixed section 14 is released. The accumulator packs 21, 22 can be removed again.

[0299] As Figure A2 shown, the fixed section 14 is constructed such that the first accumulator pack 21 and the second accumulator pack 22 are arranged offset from each other in the direction of the longitudinal central axis 30 of the guide rail 4. Measured in the direction of the longitudinal central axis 30 of the guide rail 4, the second accumulator pack 22 is closer to the front end 6 of the housing 2 than the first accumulator pack 21. Thus, in the state in which the first accumulator pack 21 and the second accumulator pack 22 of the working device 1 are inserted, the distance a measured in the direction of the longitudinal central axis 30 between the center of gravity SA1 of the first accumulator pack 21 and the center of gravity S1 of the working device 1 is greater than the distance b measured in the direction of the longitudinal central axis 30 between the center of gravity SA2 of the second accumulator pack 22 and the center of gravity S1 of the working device 1. Particularly preferably, the distance b corresponds to at most 90%, in particular at most 80%, of the distance a.

[0300] As Figure A2As shown, in a preferred embodiment, the first battery pack 21 and the second battery pack 22 are arranged offset from each other in a direction perpendicular to the transverse plane 32 of the guide rail 4. Thus, the fixed section 14 is configured such that in a state where the first battery pack 21 and the second battery pack 22 of the working device 1 are inserted, the distance c measured perpendicular to the transverse plane 32 between the center of gravity SA1 of the first battery pack 21 and the center of gravity S1 of the working device 1 is less than the distance d measured perpendicular to the transverse plane 32 between the center of gravity SA2 of the second battery pack 22 and the center of gravity S1 of the working device 1. The distance c is at most 90% of the distance d.

[0301] As shown in FIG. A4, the operating element 10 is arranged at the first handle 9 of the working device 1. A distance q is provided between the operating element 10 and the center of gravity S1 of the working device 1. In the present embodiment, the distance q is not greater than 3 cm, preferably not greater than 2 cm, and in particular not greater than 1 cm. This results in the operator at least partially enclosing the center of gravity S1 of the working device 1 when holding the first handle 9 and operating the operating element 10. In a preferred embodiment, the center of gravity S1 of the working device 1 is located between the second handle 57 and the operating element 10.

[0302] As shown in FIG. A4, in a preferred embodiment of the working device 1, the locking lever 26 is arranged in the handle housing 48. In the present embodiment, the locking lever 26 is arranged outside the handle 9 ( Figure A2 ). The locking lever 26 has a distance r from the center of gravity S1 of the working device 1, and the distance r is not greater than 3 cm, preferably not greater than 2 cm, and in particular not greater than 1 cm.

[0303] As shown in FIG. A4, in a preferred embodiment, the operating element 10 is configured as a swingable lever. The operating element 10 is swingably supported relative to the housing 2 about a first swing axis 38. The first swing axis 38 is preferably oriented perpendicular to the longitudinal plane 31 of the guide rail 4. The operating element 10 includes an outer contour 25. The outer contour 25 has a maximum first radius r1 with respect to the first swing axis 38. In other words, the maximum first radius r1 corresponds to the maximum radial extension of the operating element 10 with respect to the first swing axis 38. The operating element 10 is arranged in the handle 9 such that the maximum first radius r1 is greater than the distance e between the center of gravity S1 of the working device 1 and the first swing axis 38 of the operating element 10. Thus, the center of gravity S1 of the working device 1 is very close to the swing axis 38 of the operating element 10.

[0304] As shown in FIG. A5, the locking lever 26 is also configured as a pivotable lever. The locking lever 26 is pivotably supported relative to the housing 2 about a second pivot axis 39. The pivot axis 39 of the locking lever 26 is preferably located in a plane oriented parallel to the longitudinal plane 31 of the guide rail 4. The pivot axis 39 of the locking lever 26 is preferably located in the longitudinal central plane 43 of the housing 2. The locking lever 26 has an outer contour 27, and the outer contour 27 has a maximum second radius r2 relative to the second pivot axis 39. The maximum second radius r2 is greater than the distance f between the center of gravity S1 of the working device 1 and the second pivot axis 39. Therefore, in the viewing direction of the second pivot axis 39 of the locking lever 26, the center of gravity S1 is located within the maximum second radius r2 of the locking lever 26. In the prescribed operation of the working device 1, it is provided that the operator operates the locking lever 26 with his thumb. The position of the center of gravity S1 of the working device 1 now causes the operator to enclose the center of gravity S1 with his thumb on the one hand and with his index finger on the other hand. Thereby, the operator directly holds the working device 1 at the center of gravity S1, thereby ensuring a particularly ergonomic operation of the working device 1.

[0305] Embodiments of the working device 1 according to Figure A2 are shown in FIGS. A6 and A7. For the sake of clarity, the view according to Figure A2 towards the working device 1 is repeatedly shown in FIG. A7.

[0306] As shown in FIGS. A6 and A7, the first handle 9 includes a first handle section 55 for supporting an operator's hand, in particular for gripping the first handle 9. The handle section 55 has an upper side 51 and a lower side 52 facing away from the upper side 51. The upper side 51 of the handle section 55 faces away from the actuating element 10. The lower side 52 of the handle section 55 faces the actuating element 10. Preferably, the actuating element 10 is arranged in the housing 2 such that the actuating element projects from the housing 2 directly at the opening of the lower side 52 of the handle section 55.

[0307] As shown in FIGS. A6 and A7, the covering bow 101 extends from its first end 103 along the lower side 52 of the first handle section 55 to its second end 104. In the present embodiment, the covering bow 101 extends substantially parallel to the lower side 52 of the first handle section 55. Thus, the actuating element 10 is arranged between the handle 9 (in particular the handle section 55) and the covering bow 101. The covering bow 101 directly abuts against the motor housing 49 of the housing 2 and against the central housing 47 of the housing at its first front end 103. The covering bow 101 separates the handle housing 48 from the motor housing 49 and the central housing 47 here. The second end 104, i.e. the rear end of the covering bow 101, leads into the handle housing 48 of the housing 2, in particular into the fixing section 14 of the handle housing 48. The handle housing 48 and the covering bow 101 form an opening 110 through which the operator can pass his fingers when gripping the handle section 55. The covering bow 101 serves to reinforce the housing 2. In particular when high forces and torques act on the housing 2, it is particularly advantageous that, via the covering bow 101, the corresponding loads can also be intercepted and thus damage to the housing 2 can be avoided. Advantageously, the covering bow 101 is of one-piece construction with the central housing 47 and / or the handle housing 48.

[0308] As shown in FIG. A6, the covering bow 101 has a narrowing 102 in the direction towards its second end 104. The narrowing 101 enables the operator to fix the working device 1 to the carrier device via a spring catch 113 or another closing element. The spring catch 113 is schematically shown by a dashed line in FIG. A6.

[0309] As Figure A8 shown, the covering bow 101 extends from the first longitudinal side 108 of the working device 1 to the second longitudinal side 109 of the working device 1 in a direction perpendicular to the longitudinal plane 31 of the guide rail 4. The covering bow 101 includes a maximum width k measured perpendicular to the longitudinal plane 31, which maximum width corresponds to the maximum spacing between the first longitudinal side 108 and the second longitudinal side 109 of the working device 1. In addition, the covering bow 101 has a minimum width l at its narrowing 102, and the minimum width l of the narrowing 102 corresponds to the minimum spacing between the first longitudinal side 108 and the second longitudinal side 109. The minimum width l corresponds to at most 70%, preferably at most 60%, in particular approximately 50% of the maximum width k of the covering bow 101. In a preferred embodiment, the minimum width l of the covering bow 101 at the narrowing 102 corresponds to at least 10%, preferably at least 20%, particularly preferably at least 30%, preferably at least 40% of the maximum width k of the covering bow 101.

[0310] As Figure A8As shown, the locking lever 26 is arranged between a first longitudinal side 108 and a second longitudinal side 109 of the covering bow 101 in a direction perpendicular to the longitudinal plane 31 of the guide rail 4. The locking lever 26 is preferably configured and arranged in the housing 2 such that, in a direction perpendicular to the longitudinal plane 31 of the guide rail 4, the locking lever does not project beyond either the first longitudinal side 108 or the second longitudinal side 109 at the widest part of the covering bow 101. The outer contour 27 of the locking lever 26 is arranged entirely between the first longitudinal side 108 and the second longitudinal side 109 of the covering bow 101 at least in the region of the first end 103 of the covering bow 101 in a direction perpendicular to the longitudinal plane 31 of the guide rail 4. The outer contour 27 of the locking lever 26 extends perpendicular to the longitudinal plane 31 of the guide rail 4 when measured at its maximum width m, and the maximum width m of the outer contour 27 is smaller than the maximum width k of the covering bow 101. The locking lever 26 is preferably rotatably supported and has two operating sections for left and right use.

[0311] As shown in FIGS. A6 and A7, the housing 2 includes a bridge portion 107 (Steg). The bridge portion 107 extends from the first handle section 55 up to the covering bow 101. The bridge portion preferably extends from the lower side 52 of the first handle section 55 up to the upper side 105 of the covering bow 101. The upper side 105 of the covering bow 101 faces the lower side 52 of the first handle section 55. In addition, the covering bow 101 includes a lower side 106 facing away from the upper side 105. The bridge portion 107 divides the opening 110 bounded by the handle 9 and the covering bow 101 into a first opening 110' and a second opening 110". The operating element 10 is arranged between the bridge portion 107 and the first end 103 of the covering bow 101. The operating element 10 projects into the first opening 110'. The narrowing portion 102 of the covering bow 101 is arranged between the bridge portion 107 and the second end 104 of the covering bow 101. Thus, the narrowing portion 102 of the covering bow 101 partially bounds the second opening 110".

[0312] As shown in FIG. A7, the covering bow 101 has a length n. The length n corresponds to the spacing between the first end 103 and the second end 104 of the covering bow 101 measured in the longitudinal direction 35 of the first handle 9. In addition, the spacing p between the bridge portion 107 and the first end 103 of the covering bow 101 measured in the longitudinal direction 35 of the first handle 9 corresponds to at most 50%, in particular at most 40%, of the length n of the covering bow 101. The spacing o between the bridge portion 107 and the second end 104 of the covering bow 101 measured in the longitudinal direction 35 of the first handle 9 corresponds to at least 40%, preferably at least 50%, of the length n of the covering bow 101.

[0313] As also shown, in particular, in FIG. A6, the hand-held working device 1 includes a protection device 80 for protecting the battery packs 21, 22. The protection device 80 is arranged at the fixing section 14 of the battery packs 21, 22.

[0314] As Figure A9 shown, the first battery pack 21 extends in its longitudinal direction 85 (FIG. A7, Figure A9 ) from a first end side 86 to a second end side 87. The second battery pack 22 also extends in its longitudinal direction 85' from a first end side 86' to a second end side 87'. The battery packs 21, 22 preferably have a substantially triangular cross-sectional profile 88, 88' with rounded corners 99, 99'. The battery packs 21, 22 also have stepped portions 100, 100' which serve as stops when the battery packs 21, 22 are pushed into the fixing section 14 of the working device 1. The cross-sectional area of the battery packs 21, 22 in the region between the second end sides 87, 87' and the stepped portions 100, 100' is greater than the cross-sectional area of the battery packs 21, 22 in the region between the stepped portions 100, 100' and the first end sides 86, 86'. In the state of the working device 1 in which the battery packs 21, 22 are installed in the fixing section 14, the first end sides 86, 86' of the battery packs 21, 22 face the fixing device 14. The second end sides 87, 87' of the battery packs 21, 22 face away from the fixing device 14. In the inserted state of the battery packs 21, 22, the second end faces 87, 87' form the free end faces of the battery packs 21, 22. In contrast, in the inserted state of the battery packs 21, 22, the first end faces 86, 86' are covered by the fixing section 14. The first battery pack 21 and the second battery pack 22 each have a longitudinal axis 50, 50' extending along the longitudinal direction 85, 85' of the respective battery pack 21, 22. The longitudinal axes 50, 50' of the battery packs 21, 22 extend along the surface centroids of the cross-sectional planes of the battery packs 21, 22, and these cross-sectional planes are oriented substantially parallel to the end faces 86, 86', 87, 87'. The first battery pack 21 and the second battery pack 22 are preferably constructed identically. In addition, in Figure A9 also shown are unlocking elements 111, 111' of the battery packs 21, 22 for locking and unlocking the latching connection structure between the battery packs 21, 22 and the fixing section 14.

[0315] As shown in FIGS. A6 and A7, the protection device 80 includes at least one first covering element 81. In the installed state, the at least one first covering element 81 extends at least up to the second end side 87 of the first battery pack 21 along the longitudinal direction 85 of the first battery pack 21. In the installed state, the longitudinal directions 85, 85' of the battery packs 21, 22 preferably correspond to the insertion direction 35 of the battery packs 21, 22, in particular to the longitudinal direction 43 of the first handle 9. The protection device 80 includes a second covering element 82. In the installed state of the battery pack 22, the second covering element 82 extends at least up to the second end side 87' of the second battery pack 22 along the longitudinal direction 85' of the second battery pack 22.

[0316] As shown in FIGS. A6 to A8, the battery packs 21, 22 are pushed into the fixing section 14. In a preferred embodiment, in the installed state of the battery packs 21, 22, the longitudinal axes 50, 50' are located in the longitudinal central plane 43 of the housing 2. In a preferred embodiment, the longitudinal axes 50, 50' of the battery packs 21, 22 are arranged parallel to the longitudinal plane 31 of the guide rail 4. As shown in particular in FIG. A7, in the installed state of the battery packs 21, 22, the battery packs 21, 22 are arranged offset from each other in their longitudinal direction. The second end sides 87, 87' of the battery packs 21, 22 are located in different planes. In the transverse direction 91, the battery packs 21, 22 are arranged one above the other. The transverse direction 91 is oriented perpendicular to the longitudinal direction 85 of the first battery pack 21 and / or the longitudinal direction 85' of the second battery pack 22. The transverse direction 91 is located in a plane oriented parallel to the longitudinal central plane 43 of the housing 2. In a preferred embodiment, in the installed state of the battery packs 21, 22, the longitudinal axes 50, 50' of the battery packs 21, 22 are arranged parallel to each other. As schematically shown in FIG. A7, it is also possible, in particular, that the fixing section 14 is constructed such that in the installed state of the battery packs 21, 22, the longitudinal axes 50, 50' of the battery packs 21, 22 are arranged at an angle to each other. The second battery pack 22 is schematically shown by a dashed line.

[0317] In a preferred embodiment, the longitudinal axes 50, 50' of the two battery packs 21, 22 are located in a plane oriented parallel to the longitudinal central plane 43 of the housing 2. Preferably, the longitudinal axes 50, 50' of the two battery packs 21, 22 are located in the longitudinal central plane 43 of the housing 2.

[0318] As particularly Figure A10 shown, the protection device 80 includes a third covering element 83 and a fourth covering element 84. As shown in FIGS. A7 and A8, in a preferred embodiment, the third covering element 83 and / or the fourth covering element 84 extend at least up to the second end sides 87, 87' of the battery packs 21, 22 along the longitudinal directions 85, 85' of the battery packs 21, 22. AsFigure A10 As shown, the first covering element 81 is arranged at the rounded corner 99 of the first battery pack 21 facing away from the second battery pack 22. The second covering element 82 is arranged at the rounded corner 99' of the second battery pack 22 facing away from the first battery pack 21. Preferably, the first covering element 81 and the second covering element 82 are symmetrically configured with respect to the longitudinal center plane 43 respectively.

[0319] As shown in FIG. A7, the third covering element 83 and the fourth covering element 84 are arranged between the battery packs 21, 22 in the transverse direction 91 (FIG. A7). As Figure A10 shown, with respect to a plane oriented parallel to the longitudinal plane 31 of the guide rail, in particular with respect to the longitudinal center plane 43, the third covering element 83 and the fourth covering element 84 are arranged opposite to each other. Particularly preferably, the third covering element 83 and the fourth covering element 84 are symmetrically configured with respect to the longitudinal center plane 43.

[0320] As shown in FIGS. A6 and A7, the protection device 80 has a clearance 90 for gripping the battery packs 21, 22 between the covering elements 81, 82, 83, 84. In particular, the unlocking elements 111, 111' are located in the clearance 90 and are freely accessible to the operator, whereby the operator can operate the unlocking elements 111, 111', and the battery packs 21, 22 can be pulled out of the fixing device 14.

[0321] As shown in FIGS. A4 and A10, a movement clearance 92 is provided between the covering elements 81, 82, 83, 84 and the battery packs 21, 22. The movement clearance 92 narrows in the direction of the first end sides 86, 86' of the battery packs 21, 22. Through the movement clearance 92, the battery packs 21, 22 are particularly well protected, because when a force acts on the protection device 80, the covering elements 81, 82, 83, 84 elastically deform in the region of the movement clearance 92, and the energy acting on the protection device 80 can be dissipated here without a force acting on the battery packs 21, 22.

[0322] As Figure A11 shown, the first covering element 81 and / or the second covering element 82 of the protection device 80 has a width i measured perpendicular to the longitudinal plane 31 of the guide rail 4. The width i corresponds to at least 30%, preferably at least 50%, of the width j of the first battery pack 21 and / or the second battery pack 22 measured perpendicular to the longitudinal plane 31 of the guide rail 4.

[0323] As shown in FIG. A7, the third covering element 83 and / or the fourth covering element 84 include a rear protection profile 93 and a front protection profile 94. The rear protection profile 93 abuts against the second end side 87 of the first battery pack 21 in the longitudinal direction 85 of the first battery pack 21, and the front protection profile 94 abuts against the second end side 87' of the second battery pack 22 in the longitudinal direction 85' of the second battery pack 22. The front protection profile 93 is connected to the rear protection profile 94 by a step portion 95. The inner sides of the battery packs 21, 22 facing each other are protected by the third covering element 83 and the fourth covering element 84.

[0324] As Figure A10 shown, the third covering element 83 and / or the fourth covering element 84 have outer sides 97, 97' facing away from the battery packs 21, 22. The outer sides 97, 97' have concave rounded portions 98, 98'. The concave rounded portions 98, 98' project between the battery packs 21, 22. Thereby, the profiles of the third covering element 83 and the fourth covering element 84 follow the outer profiles of the battery packs 21, 22, thereby ensuring better protection of the battery packs 21, 22.

[0325] In FIGS. A12 to A14, a plurality of illustrations of the working device 1 according to Figure A2 are shown, in which the fixing device 11 is shown. The fixing device 11 is used to provide insurance for the working device 1 and protect the working device 1 from accidental dropping by the operator. Thus, for example, the working device 1 can be fixed at one end of a rope via the fixing device 11, and the other end of the rope is held, for example, at the operator's carrying device. If the operator drops the working device, the working device is insured via the rope, thereby avoiding the working device 1 hitting the ground.

[0326] As shown in FIGS. A12 to A14, in a preferred embodiment, the fixing device 11 is arranged at the handle housing 48 of the housing 2. The fixing device 11 has at least one first fixing element 12 for holding the working device 1 at the first fixing element 12. In a preferred embodiment, the fixing device 11 has a second fixing element 13 for holding the working device 1 at the second fixing element 13. The fixing device 11 is constructed such that the working device 1 can be held at the first fixing element 12 and / or the second fixing element 13. In a preferred embodiment, the fixing elements 12, 13 are constructed as grommets. Other design options for the fixing element 12 may also be suitable.

[0327] As shown in particular in Figure A12, the fixing device 11 is constructed such that the fixing elements 12, 13 are located outside the housing 2. The fixing device 11 is constructed such that the fixing elements 12, 13 are accessible to the operator. The first fixing element 12 is arranged at the first housing half 15 of the housing 2. The second fixing element 13 of the fixing device 11 is arranged at the second housing half 16 of the housing 2.

[0328] As shown in particular in Figure A12, the housing 2 has a first longitudinal outer side 28 and a second longitudinal outer side 29. The longitudinal outer sides 28, 29 are arranged opposite each other with respect to a plane oriented parallel to the longitudinal plane 31 of the guide rail 4, in particular with respect to the longitudinal center plane 43. The first fixing element 12 is arranged at the first longitudinal outer side 28 of the housing 2. The second fixing element 13 is arranged at the second longitudinal outer side 29 of the housing 2.

[0329] As shown in Figure A12, the fixing device 11 includes a base body 44. As shown in Figures A12 to 14, the base body 44 of the fixing device 11 is configured to be planar. The base body 44 may alternatively also have other shapes, such as arched, bulged, etc. The base body 44 extends in the longitudinal direction 45 from a first longitudinal end 46 to a second longitudinal end 46'. As shown in Figure A12, at at least one of the two longitudinal ends 46, 46' of the base body 44, preferably at both longitudinal ends 46, 46', the fixing elements 12, 13 are constructed. Preferably, the fixing elements 12, 13 are respectively constructed at each of the longitudinal ends 46, 46'. The longitudinal direction 45 of the base body 44 is oriented substantially perpendicular to the longitudinal plane 31 of the guide rail 4. As shown in Figure A12, wing-shaped protrusions 19, 20 are provided at the base body 44, wherein the wing-shaped protrusions 19, 20 are arranged between the fixing elements 12, 13. The wing-shaped protrusions 19, 20 of the base body 44 extend transversely to the longitudinal direction 45 of the base body 44.

[0330] As shown in FIGS. A12 to A14, the fixing device 11 is arranged in the fixing section 14 of the housing 2. The fixing device 11 is held between the first housing half 15 and the second housing half 16. In a preferred embodiment according to FIGS. A12 to A14, the fixing device 11, in particular the base body 44 of the fixing device 11, is held in a form-fitting manner between the first housing half 15 and the second housing half 16. The two housing halves 15, 16 form a slit-shaped clearance 17 in which the fixing device 11 is held in a form-fitting manner. In an alternative embodiment, it is also suitable that the base body 44 is fixed in the housing 2 in some other way, for example, glued into the housing. The fixing device 11 is particularly preferably arranged between the first battery pack 21 and the second battery pack 22. The fixing device 11, in particular the base body 44 of the fixing section 14, is configured as an integral part, whereby high forces can be transmitted to the housing 2 through the base body. In particular, when receiving the tilting moment of the base body 44 about the longitudinal axis 45 of the base body 44, the wing-shaped protrusions 19, 20 are advantageous.

[0331] If the working device 1 is caught by a rope or by the fixing device 11 during a fall, high forces must be transmitted from the fixing device 11 to the housing 2. Here, high loads are generated at the housing 2. Therefore, a mechanical connection structure, in particular a threaded connection structure 18, for connecting the first housing half 15 and the second housing half 16 is provided in the vicinity of the fixing device 11. In the current embodiment, the distance between the mechanical connection structure and the fixing device 11 is less than 3 cm, preferably less than 2 cm, and particularly preferably less than 1 cm. Thereby, the forces transmitted from the fixing device 11 to the housing halves 15, 16 of the housing 2 can be supported by the mechanical connection structure. It can also be arranged that a plurality of mechanical connection structures are provided in the vicinity of the fixing device 11.

[0332] As Figure A2 shown, the fixing device 11 is arranged between the rear end 7 of the housing 2 and the center of gravity S1 of the working device 1. If the working device 1 is suspended, for example, at a rope by its fixing device 11, then the working device 1 points in the direction of the ground with its front end 6, in particular with its guide rail 4. Therefore, the operator can simply grasp the working device 1 from above.

[0333] As Figure A15As shown, the second handle 57 of the housing 2 has a second handle section 58 for supporting the operator's other hand. The second handle section 58 is configured at the motor housing 49 of the housing 2. The second handle section 58 is formed by a supporting surface of the motor housing 49 that extends from the rear end portion 73 to the front end portion 72 of the handle section 58 along the longitudinal direction 59 of the second handle section 58. The supporting surface generally has the shape of a column section over its entire length, and the direction of the column axis corresponds to the longitudinal direction of the second handle section 58. The diameter of the column generally corresponds to the width of the motor housing 49 measured perpendicular to the longitudinal plane 31. This column section generally corresponds to a semi-column. In an alternative, not shown in detail, embodiment of the work equipment 1, it can also be provided that pitted depressions are formed at the supporting surface of the handle section 58, which are provided for supporting the individual fingers and for the ergonomic positioning of the individual fingers.

[0334] As Figure A15 shown, a limiting device 60 is provided between the second handle section 58 and the guide rail 4. Relative to the second handle section 58, the limiting device 60 has a projection 61 that extends at least in the longitudinal plane 31 of the guide rail 4. In the viewing direction perpendicular to the longitudinal plane 31 of the guide rail 4, the projection 61 extends from the handle section 58 perpendicular to the longitudinal direction 59 of the handle section 58 in a direction away from the handle section 58. The projection 61 is configured such that sliding from the second handle section 58 in the direction of the guide rail 4 is prevented. The projection 61 is configured such that the projection 61 forms a form-fitting stop for the hand of the operator placed on the second handle section 58 in the direction of the guide rail 4.

[0335] As Figure A15As shown in the figure, in the viewing direction perpendicular to the longitudinal plane 31 of the guide rail 4, the limiting device 60 has an outer contour 62. The outer contour 62 of the limiting device 60 has a first end 63 adjacent to the second handle section 58 and a second end 64 adjacent to the guide rail 4. A protrusion 61 is formed at the first end 63 of the contour 62. Therefore, the protrusion 61 extends from the first end 63 of the outer contour 62 in a direction away from the handle section 58. The protrusion 61 has a contact section 65. The contact section 65 is provided for the contact of the operator's hand, which is placed on the second handle section 58. The contact section 65 of the protrusion is configured such that when the hand moves in the longitudinal direction 59 of the second handle section 58, the hand resting on the second handle section 58 abuts against the contact section 65, especially in a form-fitting manner. Therefore, the contact section 65 of the protrusion 61 forms a stop for the hand resting on the second handle 57 in the longitudinal direction 59 of the second handle section 59 towards the guide rail 4. The contact section 68 is configured to be concave. The contact section 65 forms an undercut for the hand of the operator resting on the contact section 65. The undercut of the contact surface 65 causes the hand of the operator to remain hooked at the contact section 65 when the hand abuts at the contact section 65 and the hand moves away from the handle section 58 perpendicular to the longitudinal direction 59 in the viewing direction perpendicular to the longitudinal plane 31. The contact section 65 has the shape of a pit, and the hand of the operator resting on the second handle section 58 of the second handle 57 is shaped into the pit when moving in the longitudinal direction 59 of the handle section 58.

[0336] As Figure A15 shown, an edge 68 is formed at the contact section 65. The edge 68 is formed by a groove 69. The groove 69 is formed at the housing boundary between the motor housing 49 and the central housing 47. The working device 1 includes a lubricant tank 70 for supplying lubricant to the saw chain 5. The lubricant tank 70 is part of the housing 2, especially part of the central housing 47. The limiting device 60 is preferably at least partially formed by the wall of the lubricant tank 70.

[0337] As Figure A15 shown, in the viewing direction perpendicular to the longitudinal plane 31 of the guide rail 4, the protrusion 61 has a height h measured perpendicular to the longitudinal direction 59 of the second handle section 58 at the first end 63 of the contour 62. The height h corresponds to at least 15%, especially at least 20%, preferably approximately 25% of the length l of the second handle section 58 measured in the longitudinal direction 59 of the second handle section 58. The length l corresponds to the distance between the front end 72 and the rear end 73 of the handle section 58.

[0338] As Figure A15As shown, the abutment section 65 of the concave configuration ends at a further edge 74 of the projection 61. At this further edge 74, the projection 61 has its maximum height relative to the handle section 58. The abutment section 65 is configured such that, in the viewing direction perpendicular to the longitudinal plane 31 of the guide rail 4, the tangent 75 of the abutment section 65 at the edge 74 intersects at an angle α with a straight line in the longitudinal direction 59 of the second handle section 58. The angle α opens towards the second handle section 58 and is at most 90°, preferably at most 80°, in particular approximately 75°. Preferably, the angle α is greater than 30°.

[0339] As Figure A15 As shown, the housing 2 is open upwards in the region of the second handle section 58. Thus, in the viewing direction perpendicular to the longitudinal plane 31 of the guide rail 4, the housing 2 is open away from the handle section 58 in a direction perpendicular to the longitudinal direction 59 of the second handle section 58. Thereby, the operator can grip the second handle section 58 from above in a simple manner. In an alternative embodiment not shown in detail, the abutment section 65 is provided with an anti-slip coating. In a preferred embodiment, a grip recognition device (not shown in detail) is provided at the second handle 57. The grip recognition device can be configured mechanically and / or electrically and / or electronically. The electronic grip recognition device is preferably configured as a resistive, capacitive or inductive grip recognition device. Such mechanical and / or electrical signals for grip position recognition can be used as release signals for actuating the drive motor 3. Such signals can also be used in combination with an accident prevention circuit. A person skilled in the art can use such signals in different ways for functions known in the prior art.

[0340] In Figure A16 shown is the working device according to the invention in a state in which the battery packs 21, 22 are removed. Thereby, the battery packs 21, 22 can be charged at an external charging station and then inserted again into the working device 1.

[0341] As in particular Figure A16 shown, it can be provided that a raised element 114 is provided on the lubricant tank 70. The raised element 114 forms a projection starting from the lubricant tank 70. In the present embodiment, three raised elements 114 are provided. Currently, the raised element 114 has a substantially triangular outer contour in the viewing direction perpendicular to the longitudinal plane 31 of the guide rail 4. Other outer contours can also be suitable. In a preferred embodiment, the raised elements 114 are arranged in rows one after another in the direction of the longitudinal central axis 30. The three raised elements 114 are located in the longitudinal central plane 43. Other arrangements on the upper side of the lubricant tank 70 can also be suitable.

[0342] As Figure A16As also shown, the working device 1 preferably includes a connection unit 115. The connection unit 115 is configured to store, transmit, and / or receive data of the working device 1. Such data can be, for example, the operating running time of the working device 1. When a predetermined threshold for the running time is reached, a maintenance requirement can be displayed to the operator. In addition, the position of the working device 1 can also be determined via the connection unit 115 and transmitted to other devices.

[0343] In Figure A17 An alternative embodiment of the working device 1 is shown. This embodiment differs from the working device 1 according to the previous figures only in that no protective device 80 is provided for the battery packs 21, 22. Thus, the housing 2 ends with a fixed section 14 into which the battery packs 21, 22 are inserted.

[0344] In Figures A18 to A22 Another embodiment of the electric hand-held working device 1 is shown. The same reference numerals denote the same components of the working device 1. The hand-held working device 1 includes a housing 2 and a drive motor 3 arranged in the housing 2, wherein a fixed section 14 is provided at the rear end 7 of the housing 2 for receiving a first battery pack 21 for supplying electrical energy to the drive motor 3. In addition, the working device 1 includes at least a first battery pack 21 and in particular a second battery pack 22, wherein the first battery pack 21 and in particular the second battery pack 22 are held at the fixed section 14. The first battery pack 21 and in particular the second battery pack 22 extend in their longitudinal directions 85, 85' from their first end sides 86, 86' to their second end sides 87, 87', wherein the first end sides 86, 86' of the first battery pack 21 and in particular of the second battery pack 22 face the fixing device 14, and the second end sides 87, 87' of the first battery pack 21 and in particular of the second battery pack 22 face away from the fixing device 14. The working device 1 includes a fastening device 130, wherein the fastening device 130 at least partially encloses the second end side 87 of the first battery pack 21 and in particular of the second battery pack 22, and wherein the fastening device 130 is detachably held at the housing 2, in particular at the fixed section 14.

[0345] As Figure A19As shown in the figure, the fastening device 130 includes a first fastening section 131 and a second fastening section 132. The first fastening section 131 forms a receiving space in which the first battery pack 21 is arranged. The fastening device 130 abuts against the second end side 87 of the first battery pack 21 with its first fastening section 131, and in particular against the longitudinal side of the first battery pack 21. The second fastening section 132 forms a further receiving space in which the second battery pack 22 is arranged. The fastening device 130 abuts against the second end side 87' of the second battery pack 22 with its second fastening section 132, and in particular against the longitudinal side of the second battery pack 22. The second end side 87 of the first battery pack 21 is at least partially covered by the first fastening section 131. The second end side 87' of the second battery pack 22 is at least partially covered by the second fastening section 132. In an alternative embodiment of the working device 1, it can also be provided that the second end sides 87, 87' of the two battery packs 21, 22 are completely covered by the fastening sections 131, 132.

[0346] As Figure A19 shown in the figure, the fastening device 130 includes an intermediate section 133. The first fastening section 131 and the second fastening section 132 are interconnected by the intermediate section 133. In the present embodiment, the fastening device 130 extends only in the region of the battery packs 21, 22 themselves in the longitudinal directions 85, 85' of the battery packs 21, 22, and does not contact the fixing section 14 here. The battery packs 21, 22 project from the fixing section 14 with their free ends. The fastening device 130 extends in the longitudinal directions 85, 85' of the battery packs 21, 22, in particular over at least 50%, preferably over 70%, in particular over 85% of the free ends of the battery packs 21, 22. It can also be provided that the fastening device 130 extends up to the fixing section 14 and contacts the fixing section.

[0347] As Figure A19 shown in the figure, the fastening device 130 is held at the housing 2 via a positioning unit 134, which is currently configured as a holding rope (Halteschnur). The positioning unit 134 is fixed to the fixing device 11. The positioning unit 134 can also include a grommet, in particular an elastic grommet, which is hung at the fixing device 11 and the holding rope is fixed to the grommet. The holding rope is Figure A19 shown schematically in dashes in the figure. As Figure A19 , A20As shown in FIGS. A20 and A21, a holding guide 135 is configured at the intermediate section 133. The holding guide 135 is formed by a first opening 136 through which a holding rope is led out of the receiving space. Subsequently, the holding rope extends in a first groove 137 associated with the holding guide 135 along the longitudinal side of the fastening device 130. A second opening 138 is provided in the groove 137, and the holding rope penetrates into the second opening and extends to the other longitudinal side of the fastening device 130. On the other longitudinal side of the fastening device 130, a first opening 136', a groove 137 and a second opening 138' are symmetrically arranged in a mirror image manner, and the holding rope extends back through the first opening, the groove and the second opening.

[0348] The holding rope is preferably configured to be elastic. In order to disconnect the fastening device 130 from the battery packs 21, 22, the fastening device must be pulled away from the battery packs 21, 22 along the longitudinal directions 85, 85' of the battery packs 21, 22. Subsequently, the fastening device 130 can be loosely hung at the fixing device 11. Now, the battery packs 21, 22 can be disconnected from the fixing section 14 and charged, or replaced with other battery packs 21, 22. After the battery packs 21, 22 are fixed at the fixing section 14 again, the fastening device 130 can be placed on the second end sides 87, 87' of the battery packs 21, 22 again by pulling the holding rope.

[0349] In Figure A22 An alternative configuration of the fastening device 130 is shown. Instead of the holding guide 135, the fastening device has first openings 136 on at least two longitudinal sides through which the holding rope can be led.

[0350] In an alternative embodiment, it can also be provided that the fastening device 130 extends up to the fixing section 14 and partially overlaps with the fixing section. The overlap between the fastening device 130 and the fixing section 13 can be configured such that a clamping is generated, by which the fastening device 130 is held on the fixing section 14. In such an embodiment, the positioning unit 134 is not required, but the positioning unit can also be additionally used.

[0351] The fastening device 130 is preferably configured as an integral unit. The fastening device 130 is especially made of plastic, especially of elastomer. Therefore, the fastening device 130 serves as a protection part for the first battery pack 21 and especially as a protection part for keeping the battery pack 22 from being impacted, for example, when the working device 1 falls to the ground.

[0352] Figure B1 shows, in a perspective view and by way of example of a chainsaw, a working device 1 according to the invention. However, it is also possible to provide hedge trimmers, free cutters or similar devices. Here, the working device 1 is shown in the rest position 2 on a rest surface 3 serving as a reference surface. However, during operation, the working device can also be brought to different other positions.

[0353] The working device 1 includes a tool 12, which is embodied here as a saw chain running around a guide rail 11, and which is driven in its circular motion during operation by a drive motor 10, which is only shown schematically here. The drive motor 10 can be an internal combustion engine and is, in the illustrated embodiment, an electric motor for battery operation. However, alternatively, operation with mains voltage is also considered.

[0354] The working device 1 includes a housing 21, at the rear end thereof facing the user, a handle 4 is molded as part of the housing 21. A grip tube 5 is also arranged in the direction towards the tool 12. Between the rear handle 4 and the front grip tube 5, a battery receptacle 9 is formed in the housing 21 for a replaceable battery, not shown here, for supplying energy to the working device 1. In front of the grip tube 5 and in the direction towards the tool 12 there is a handguard bow 8. In the area of the handguard bow 8, a loudspeaker 45 of an optional noise generator is arranged for adjusting the operating noise.

[0355] The working device 1 is provided at its rear handle 4 with a first operating element 6 for controlling the drive motor 10. The first operating element 6 serves for power control of the drive motor 10, wherein, via a corresponding control electronics, the power setting can be adjusted steplessly between "off" and "full load". However, alternatively, a simple on / off switch can also be suitable. A second operating element 7, which is also arranged at the handle 4, serves as a locking element for the first operating element 6. In the state where the second operating element 7 is not actuated, the first operating element 6 cannot be pressed, thus preventing the drive motor 10 from accidentally outputting power. Only in the state where the second operating element 6 is actively actuated can the first operating element 6 be pressed, and then the power of the drive motor 10 is increased and the tool 12 is driven.

[0356] Figure B2 shows, in a perspective inner view, the area of the handle 4 according to Figure B1, where, for the purpose of showing the internal mechanics, the half-shell of the handle 4 facing the observer has been removed and is not shown. Figure B3 shows, in a longitudinal section for further clarification, the arrangement according to Figure B2. The following description relates to the combined observation of Figures B2 and B3.

[0357] The first operating element 6 is pivotally supported on a support pin with a pivot axis 16 and is pressed by a return spring 20 into the unactuated position 14 shown here. The pivot axis 16 of the first operating element 6 is transverse to the longitudinal direction of the working device 1 according to FIG. B1. The operable section of the first operating element 6 accessible to the user projects downward from a handle 4 which is configured as part of a housing 21. In its lower region in the direction of gravity, the first operating element 6 is provided with an operating element opening 40 which allows dirt to drain from the region of the second operating element 7.

[0358] The second operating element 7 has a support axis 35 which extends from a front first support pin 23 to a rear second support pin 24. The two support pins 23, 24 are pivotally supported in corresponding support openings of the housing 21 and thus define the pivot axis 17 of the second operating element 7. The pivot axis 17 of the second operating element 7 is substantially parallel to the longitudinal axis of the working device 1 according to FIG. B1. FIG. B11 shows a front view of the arrangement described here. From a combined observation of FIGS. B2, B3 and B11, it follows that the pivot axis 16 of the first operating element 6 and the pivot axis 17 of the second operating element 7 are inclined to one another and, in the present preferred embodiment, extend perpendicular to one another here.

[0359] The second operating element 7 has at least one operable section 26, here two operable sections 26, which are provided for the operator to actuate the second operating element 7. The operable sections 26 have connecting regions 27 by means of which these operable sections are preferably integrally connected to the remaining section of the second operating element 7. The housing 21 is provided with an opening 22 in the region of the handle 4. The two operable sections 26 project through the opening 22 at this connecting region 27 to the outside of the housing 21.

[0360] Here, the second operating element 7 is shown in the unactuated position 18. The arrangement includes a spring 13 which interacts with an actuating profile 30 of the second operating element 7 and thereby holds the second operating element 7 in this unactuated position 18. In particular, it can be seen in FIG. B3 that the spring 13 has a clamping section 28 which is fixedly held at the housing. The intermediate region 41 of the spring 13 adjoins this clamping section. At its opposite rear end, the spring 13 is provided with an actuating section 29 which bears on the actuating profile 30 and thereby exerts the desired holding and return action on the second operating element 7.

[0361] Finally, it can also be seen that the second operating element 7 includes a covering section 32 which partially surrounds the pivot axis 17 in the form of a column section. The operating section 26 is integrally connected or molded to the covering section 32 at its connecting region 27. The opening 22 is at least partially covered by the covering section 32 on the inner side of the housing 21. From the combined observation of FIGS. B2 and B3 and Figure B5 and Figure B9 it can be concluded that in all positions of the second operating element 7, the opening 22 is completely covered not only in the circumferential direction but also in the direction of the pivot axis 17.

[0362] Figure B4 and Figure B5 show the arrangement according to FIGS. B2 and B3 in side view respectively, wherein the viewing direction is parallel to the pivot axis 16 of the first operating element 6. It can be seen that in this viewing direction, the first operating element 6 is arranged below the support pin 23, while the spring 13 is located above the support pin. In other words, in the above-mentioned viewing direction, the first operating element 6 and the spring 13 are arranged on opposite sides of the support pin 23 of the second operating element 7.

[0363] The connecting region 27 of the operating section 26 extends in the direction of the pivot axis 17 of the second operating element 7 along the operating section region 38 of the working device 1. There are two planes 36, 37 perpendicular to the pivot axis 17 of the second operating element 7, and the connecting region 27 of the operating section 26 is located between these two planes. In other words, the connecting region 27 of the operating section 26 extends from a first plane 36 extending perpendicular to the pivot axis 17 to a second plane 37 also extending perpendicular to the pivot axis 17, and they do not extend beyond the above-mentioned planes 36, 37. The planes 36, 37 also sandwich the operating section region 38 (FIG. B1) of the working device 1.

[0364] In addition, from the combined observation of Figure B4 and Figure B5 it can be seen that with respect to the direction of the pivot axis 17 of the second operating element 7, the clamping section 28 and the actuating section 29 of the spring 13 extend at least partially on opposite sides of the operating section region 38. In the shown preferred embodiment, the clamping section 28 and the actuating section 29 are completely arranged outside the operating section region 38 and are arranged on opposite sides thereof.

[0365] The spring 13 itself extends between the covering section 32 and the pivot axis 17. Here, the covering section 32 covers the intermediate region 41 of the spring 13 towards the outer side of the housing 21. From the combined observation of FIG. B10 it can also be seen that the actuating profile 30 and the covering section 32 of the second operating element 7 delimit an opening 42 through which the spring 13 projects. In other words, the spring 13 sinks longitudinally through the second operating element 7.

[0366] Figures B6 to B9 The same arrangement structure is shown in the same views as FIGS. B2 to Figure B5 wherein the difference is that the second operating element 7 now swings from the non-operated position 18 according to FIG. B2 about the pivot axis 17 in the direction of the arrow 44 into the operated position 19( Figure B6 ). This is accomplished on the user side by pressing one of the two operating sections 26 with a finger. In the operated position 19( Figure B6 ) of the second operating element 7, the first operating element 6 can swing or be pressed from its non-operated position 14 against the force of the return spring 20 about its pivot axis 16 into the operated position 15. First of all, it can be seen from FIGS. B2 to Figure B5 that the second operating element 7 in its non-operated position 18 shown therein blocks the movement of the first operating element 6 in the direction of the operated position 15( Figure B6 ). For this purpose, the second operating element 7 is provided with a downwardly projecting projection 25 which interacts with the locking section 31 of the first operating element 6. However, in the operated position 19 according to Figures B6 to B9 , due to the swinging movement of the second operating element 7, the projection 25 swings laterally away to such an extent that it no longer overlaps with the locking section 31 of the first operating element 6. The first operating element 6 can be pressed into the operated position 15 without the locking section 31 colliding with the projection 25.

[0367] Furthermore, it can be seen that the spring 13 acting on the second operating element 7 is configured as a leaf spring. From the combined observation of Figure B5 and Figure B9 it follows that the leaf spring has a central plane 33, with which the leaf spring emerges from the housing clamping structure in the region of its clamping section 28. Here, structurally, the inclination position of the central plane 33 relative to the pivot axis 17 of the second operating element 7 is set such that the central plane 33 encloses an angle α with the pivot axis 17. The angle α is preferably at least 10°, and in the illustrated embodiment at least 15°. The leaf spring extends along a bending line starting from the clamping section 28 due to its pre-tension, so that the leaf spring extends substantially parallel to the support axis 35 and at a small distance from the support axis in the region of the longitudinally opposite ends in the bent state according to Figure B9 .

[0368] In particular, from Figure B6 and Figure B7It can be seen from the comprehensive observation that the actuating section 29 of the spring 13 has at least a contact section 39 in the contact area with the actuating profile 30, where there are two laterally opposite contact sections 39. The contact sections 39 are bent away from the actuating profile 30 in the circumferential direction with respect to the pivot axis 17. Furthermore, the actuating section 29 with its contact sections 39 is arranged outside the covering section 32 in the direction of the pivot axis 17, so that even in the Figure B9 lifted state according to

[0369] , the bent contact sections do not collide with the covering section 29. Figure B6 It can be seen from the comprehensive observation of FIGS. B2 and Figure B6 that the actuating profile 30 of the second actuating element 7 has at least one convex arched section 43, against which the actuating section 29 of the spring 13 bears, in particular in the actuating position 19 ( Figure B6 ). In the shown preferred embodiment, the actuating profile 30 includes one convex arched section 43 on each side of the pivot axis 17. The two convex arched sections 43 are mirror-symmetric to each other. In the non-actuated position 18 of the second actuating element 7 according to FIG. B2, the actuating section 29 of the spring 13 is centered between the two convex arched sections and bears against the two convex arched sections 43. The arrangement on both sides of the convex arched section 43 not only allows the second actuating element 7 to be actuated in the direction of arrow 44 (

[0370] ) to reach the actuating position 19. On the contrary, the second actuating element 7 can also be pivoted in the direction opposite to the arrow 44 to reach the actuating position 19. Both actuating positions have the effect of releasing the locking of the first actuating element 6 by means of the protrusion 25. Figure B6 Furthermore, it can be seen in Figure B5 and Figure B9 that when the second actuating element 7 is pivoted into the corresponding actuating position 19, one of the bent contact sections 39 of the actuating section 29 of the spring 13 slides on the relevant convex arched section 43 to allow free pivoting movement. It can be seen from the comparison between Figure B6 that the actuating section 29 of the spring 13 sliding on the actuating profile 30 is lifted against its spring force, thereby increasing the acting spring force. The convex shape of the arched section 43 causes a high force increase at the beginning, which only increases slightly with the continuation of the offset. Since in addition the actuating section 29 is pressed eccentrically against the arched section 43 with respect to the pivot axis 17 in the actuating position 19 ( Figure B6 ), a restoring moment is generated, which automatically rotates the second actuating element 7 from the actuating position 19 (

[0371] ) back to the non-actuated position 18 (FIG. B2).As can be seen from the rear view according to FIG. B10, one of the two operating sections 26 projects linearly upward at a right angle to the relevant tangent of the covering section 32 in the non-operated position 18 (FIG. B2). The other operating section 26 projects obliquely laterally and is ergonomically curved. However, here, in the connecting region 27, the other operating section encloses an angle β of at least 30° with the relevant tangent of the covering section 32. In the illustrated embodiment, this angle β is also 90°, as in the vertical operating section 26. It can also be seen from the same view that the covering section 32 extends in an arc over an angular range γ of at least 120°, here slightly more than 180°, about the pivot axis 17.

[0372] FIG. B12 shows in perspective a variant of the gripping area according to FIGS. B2 to B11, in which the opening 22 in the housing 21 widens to the right in order to create space for an optional third operating section 26 of the second operating element 7. This optional operating section 26 (which is only shown schematically and in dashed lines here) can for example be designed to be mirror-symmetrical to the oppositely located curved operating section 26 in order to create additional accessibility.

Claims

1. A tree cutting machine, the tree cutting machine having a housing (2) and a drive motor (3), wherein, The drive motor (3) drives a saw chain (5) guided in a guide groove of a guide rail (4) to loop via a drive sprocket, wherein the guide rail (4) is arranged at a front end portion (6) of the housing (2) and has a longitudinal plane (31) expanded by the guide groove. Wherein, a fixed section (14) is provided at a rear end portion (7) of the housing (2), and the fixed section is used to receive a first battery pack (21) for supplying electric energy to the drive motor (3). The housing (2) includes a first handle (9) for supporting an operator's one hand. In particular, the first handle (9) is associated with an operating element (10) for operating the drive motor (3). It is characterized in that the fixed section (14) is provided for receiving a second battery pack (22), wherein the fixed section (14) is arranged at the housing (2), in particular at least at the first handle (9), such that in a state of the tree cutter (1) in which the first battery pack (21) and the second battery pack (22) are arranged at the fixed section (14), the center of gravity (S1) of the tree cutter (1) is located in the first handle (9).

2. The tree cutter according to claim 1, wherein, The guide rail (4) has a longitudinal central axis (30) and a transverse plane (32) orthogonally oriented to the longitudinal plane (31), wherein the longitudinal central axis (30) is located in the longitudinal plane (31) and the transverse plane (32). The transverse plane (32) of the tree cutter (1) is divided into an upper section (36) and a lower section (37) surrounding the drive motor (3).

3. The tree cutter according to claim 2, wherein The center of gravity (S1) of the tree cutter (1) is located in the lower section (37) of the tree cutter (1).

4. The tree cutting machine according to claim 2 or 3, characterized in that, The fixed section (14) of the housing (2) is located in the lower section (37) of the tree cutter (1).

5. The tree cutter according to any one of claims 1 to 4, characterized in that, The drive motor (3) has a rotation axis (33), and the rotation axis (3) extends parallel to or is located in the longitudinal plane (31) of the guide rail (4).

6. The tree cutter according to any one of claims 1 to 5, characterized in that, The fixed section (14) is configured such that the battery packs (21, 22) can be inserted into the fixed section (14) along an insertion direction (34).

7. The tree cutting machine according to claim 6, characterized in that, The insertion direction (34) substantially corresponds to the longitudinal direction (35) of the first handle (9).

8. The tree cutter according to any one of claims 1 to 7, characterized in that, The fixed section (14) is configured such that in a state of the tree cutter (1) in which the first battery pack (21) and the second battery pack (22) are inserted, the distance (a) measured along the longitudinal central axis (30) between the center of gravity (SA1) of the first battery pack (21) and the center of gravity (S1) of the tree cutter (1) is greater than the distance (b) measured along the longitudinal direction (30) between the center of gravity (SA2) of the second battery pack (22) and the center of gravity (S1) of the tree cutter (1).

9. The tree cutter according to any one of claims 1 to 8, characterized in that, The fixed section (14) is configured such that, in a state where the first battery pack (21) and the second battery pack (22) are inserted into the tree cutter (1), the distance (c) measured perpendicularly to the transverse plane (32) between the center of gravity (SA1) of the first battery pack (21) and the center of gravity (S1) of the tree cutter (1) is smaller than the distance (d) measured perpendicularly to the transverse plane (32) between the center of gravity (SA2) of the second battery pack (22) and the center of gravity (S1) of the tree cutter (1).

10. The tree cutter according to any one of claims 1 to 9, characterized in that, The operating element (10) is arranged at the first handle (9).

11. The tree cutter according to claim 10, characterized in that, The operating element (10) is configured as a lever pivotable about a first pivot axis (38), wherein the operating element (10) has an outer contour (25) with a maximum first radius (r1) with respect to the first pivot axis (38), and wherein the first radius (r1) is greater than the distance (e) between the center of gravity (S1) of the tree cutter (1) and the first pivot axis (38).

12. The tree cutter according to any one of claims 1 to 11, characterized in that, The housing (2) has a longitudinal central plane (43) extending parallel to the longitudinal plane (31), wherein the longitudinal central plane (43) bisects the housing (2) centrally, and wherein the center of gravity (S1) of the tree cutter (1) is located substantially within the longitudinal central plane (43) of the housing (2).

13. The tree cutter according to any one of claims 1 to 12, characterized in that, The housing (2) includes a second handle (57) for supporting the operator's other hand, and wherein the center of gravity (S1) of the tree cutter (1) is configured between the second handle (57) and the operating element (10) associated with the first handle (9).

14. The tree cutter according to any one of claims 1 to 13, characterized in that, The distance between the operating element (10) and the center of gravity (S1) of the tree cutter (1) is not greater than 3 cm, preferably not greater than 2 cm.

15. A tree cutting machine, the tree cutting machine having a housing (2) and a drive motor (3), wherein, At the rear end portion (7) of the housing (2), a fixed section (14) is provided for receiving a first battery pack (21) for supplying electrical energy to the drive motor (3). The housing (2) includes a handle housing (48) with a first handle (9) for supporting one hand of the operator, wherein the first handle (9) is associated with an operating element (10) for operating the drive motor (3). It is characterized in that the tree cutter (1) has a fixing device (11), which especially includes a base body (44), wherein the fixing device (11) has at least one first fixing element (12) for holding the tree cutter (1) at the first fixing element (12), and wherein the first fixing element (12) is especially configured as a grommet. And the fixing device (11) is arranged at the handle housing (48).

16. The tree cutting machine according to claim 15, wherein The fixing device (11) has a second fixing element (13) for holding the tree cutter (1) at the second fixing element (13), and wherein the second fixing element (13) is especially configured as a grommet.

17. The tree cutter according to any one of claims 15 to 16, characterized in that, The tree cutter (1) comprises a guide rail (4) with a guide groove and a saw chain (5) looped in the guide groove, wherein the guide rail (4) has a longitudinal plane (31) spanned by the guide groove, and the housing (2) has a first longitudinal outer side (28) and a second longitudinal outer side (29), wherein the longitudinal outer sides (28, 29) are arranged opposite each other with respect to a plane oriented parallel to the longitudinal plane (31) of the guide rail (4), wherein the first fixing element (12) is arranged at the first longitudinal outer side (28) and the second fixing element (13) is arranged at the second longitudinal outer side (29).

18. The tree cutter according to any one of claims 15 to 17, characterized in that, The fastening device (11) is arranged in a fastening section (14) of the housing (2), wherein the fastening section (14) is part of the handle housing (47).

19. The tree cutter according to any one of claims 15 to 18, characterized in that, The fixing section (14) is provided for receiving a second battery pack (22), and when the tree cutter (1) is in a state in which the first battery pack (21) and the second battery pack (22) are inserted, the fixing device (11) is arranged between the first battery pack (21) and the second battery pack (22).

20. The tree cutter according to any one of claims 15 to 19, characterized in that, The fixing device (11) is constructed in one piece.

21. The tree cutter according to any one of claims 15 to 20, characterized in that, The housing (2) comprises a first housing half (15) and a second housing half (16), wherein the fastening device (11) is held between the first housing half (15) and the second housing half (16), in particular in a form-fitting manner.

22. The tree cutter according to any one of claims 15 to 21, characterized in that, The base body (44) of the fastening device (11) is of planar design.

23. The tree cutter according to any one of claims 15 to 22, characterized in that The base body (44) extends in a longitudinal direction (45), wherein a fixing element (12, 13) is configured at at least one of the longitudinal ends (46, 46') of the base body (44), preferably a fixing element (12, 13) is configured at each of the longitudinal ends (46, 46') of the base body (44).

24. The tree cutter according to any one of claims 21 to 23, characterized in that Adjacent to the fastening device (11), the first housing half (15) and the second housing half (16) are connected to one another via a mechanical connection, in particular a screw connection (18).

25. The tree cutter according to any one of claims 15 to 24, characterized in that, The fixing section (14) is configured to receive a second battery pack (22), wherein, when the tree cutter (1) is in a state in which the first battery pack (21) and the second battery pack (22) are inserted, the tree cutter (1) has a center of gravity (S1), and the fixing device (11) is arranged between the center of gravity (S1) of the tree cutter (1) and a rear end (7) of the housing (2).

26. A tree cutting machine, the tree cutting machine having a housing (2) and a drive motor (3), wherein, The housing (2) comprises a first handle (9) with a first grip section (55), the first handle being used to support a hand of an operator, wherein an operating element (10) for operating a drive motor (3) is associated with the first handle (9), and wherein the grip section (55) has an upper side (51) and a lower side (52) facing away from the upper side (51), It is characterized in that the housing (2) comprises a covering arch (101), wherein the covering arch (101) extends from its first end (103) along the lower side (52) of the first handle section (55), in particular substantially parallel to the lower side of the first handle section, to its second end (104), and wherein the covering arch (101) has a narrowing portion (102) in the direction of its second end (104).

27. The tree cutter according to claim 26, wherein, The first end (103) of the cover bow (101) adjoins the motor housing (49) of the housing (2) and / or the central housing (47) of the housing (2).

28. The tree cutter according to claim 26 or 27, characterized in that, The tree cutter (1) comprises a guide rail (4) with a guide groove and a saw chain (5) guided in the guide groove, and the cover arch (101) has a maximum width (k) measured perpendicular to the guide rail (4) and a longitudinal plane (31) spanned by the guide groove of the guide rail (4) and has a minimum width (l) at its narrowing (102), wherein the minimum width (l) corresponds to at most 70%, preferably at most 60%, in particular about 50% of the maximum width (k) of the cover arch (101).

29. The tree cutter according to claim 28, characterized in that, The minimum width (l) of the covering arch (101) at the constriction (102) corresponds to at least 10%, preferably at least 20%, particularly preferably at least 30%, preferably at least 40% of the maximum width (k) of the covering arch (101).

30. The tree cutting machine according to claim 28 or 29, characterized in that, A locking lever (26) is provided for locking and releasing the actuating element (10), wherein the locking lever (26) has an outer contour (27) which extends over a width (m) perpendicular to a longitudinal plane (31) of the guide rail (4), wherein the width (m) is smaller than a maximum width (k) of the cover bow (101).

31. The tree cutting machine according to claim 30, characterized in that, The cover arch (101) extends from a first longitudinal side (108) to a second longitudinal side (109), wherein an outer contour (27) of the locking lever (26) is arranged completely between the first longitudinal side (108) and the second longitudinal side (109) of the cover arch (101) in a direction perpendicular to the longitudinal plane (31) of the guide rail (4), at least in the region of a first end (103) of the cover arch (101).

32. The tree cutting machine according to any one of claims 26 to 31, characterized in that, The actuating element (10) is arranged between the first handle section (55) and the cover bracket (101).

33. The tree cutter according to any one of claims 26 to 32, characterized in that, The cover arch (101) has an upper side (105) facing the lower side (52) of the first handle section (55), wherein the housing (2) comprises a bridge (107), wherein the bridge (107) extends from the upper side (105) of the cover arch (101) to the lower side (52) of the handle section (55).

34. The tree cutter according to claim 33, characterized in that, The actuating element (10) is arranged between the bridge (107) and a first end (103) of the cover bracket (101).

35. The tree cutter according to claim 33 or 34, characterized in that, The narrowing portion (102) of the cover arch (101) is arranged between the bridge portion (107) and the second end (104) of the cover arch (101).

36. The tree cutter according to any one of claims 26 to 35, characterized in that, A fixing section (14) is provided at the rear end (7) of the housing (2), the fixing section being used to receive a first storage battery pack (21) for supplying electrical energy to the drive motor (3).

37. The tree cutter according to claim 36, characterized in that, The fastening section (14) is provided for receiving a second battery pack (22).

38. The tree cutter according to claim 36 or 37, characterized in that, The second end (104) of the cover bracket (101) is formed by a fastening section (14) of the housing (2).

39. A tree cutting machine, the tree cutting machine having a housing (2) and a drive motor (3), wherein, The drive motor (3) drives a saw chain (5) guided in a guide groove of the guide rail (4) via a drive sprocket, wherein the guide rail (4) is arranged at a front end (6) of the housing (2) and has a longitudinal plane (31) spanned by the guide groove, wherein the housing (2) comprises a first handle (9) with a first handle section (55), the first handle being used to support a hand of an operator, wherein the first handle (9) is associated with an operating element (10) for operating the drive motor (3), wherein the housing (2) comprises a second handle (57) with a second handle section (58), the second handle being used to support the other hand of the operator, It is characterized in that a limiting device (60) is arranged between the second handle section (58) and the guide rail (4), wherein the limiting device (60) has a protrusion (61) extending at least in a longitudinal plane relative to the second handle section (58), wherein the protrusion (61) is constructed in such a way as to prevent sliding from the second handle section (58) in the direction of the guide rail (4).

40. The tree cutting machine according to claim 39, characterized in that, The projection (61) is designed in such a way that it forms a positive stop for the hand of the operator placed on the second grip section (58) in the direction of the guide rail (4).

41. The tree cutter according to claim 39 or 40, characterized in that, In a viewing direction perpendicular to the longitudinal plane (31), the limiting device (60) has an outer contour (62), wherein the outer contour (62) of the limiting device (60) has a first end (63) adjacent to the second handle section (58) and a second end (64) adjacent to the guide rail (4).

42. The tree cutter according to claim 41, wherein, The projection (61) is formed at a first end (63) of the outer contour (62).

43. The tree cutter according to any one of claims 39 to 42, characterized in that, The projection (61) has a concavely shaped contact section (65) which adjoins the second handle section (58).

44. The tree cutting machine according to claim 42 or 43, characterized in that, The contact section (65) forms an undercut for the operator's hand that rests on the contact section (65).

45. The tree cutter according to any one of claims 41 to 44, characterized in that, In an observation direction perpendicular to the longitudinal plane (31), the projection (61) has a height (h) perpendicular to the height measured at the first end (63) of the outer contour (62) of the second handle section (58), where the height (h) corresponds to at least 15%, in particular at least 20%, preferably approximately 25% of the length (l) of the second handle section (58) measured in the longitudinal direction (59) of the second handle section (58).

46. The tree cutter according to any one of claims 39 to 45, characterized in that The housing (2) includes a lubricant tank (70) for supplying lubricant to the saw chain (5), wherein the limiting device (60) at least partially surrounds the lubricant tank (70).

47. The tree cutter according to any one of claims 39 to 46, characterized in that, The housing (2) is open upwards in the region of the second handle section (58).

48. The tree cutter according to any one of claims 43 to 47, characterized in that The abutment section (65) is provided with an anti-slip coating.

49. A hand-held working device, the hand-held working device comprising a housing (2) with a longitudinal central plane (43) and a drive motor (3) arranged in the housing (2), wherein, At the rear end (7) of the housing (2), a fixing section (14) is provided, which is used to receive a first battery pack (21) for supplying electrical energy to the drive motor (3). It is characterized in that the fixing section (14) is arranged to receive a second battery pack (22). And at the fixing section (14), a protection device (80) for protecting the battery packs (21, 22) is provided, wherein the battery packs (21, 22) each extend from a first end side (86, 86') to a second end side (87, 87') in their longitudinal directions (85, 85'), wherein the first end sides (86, 86') of the battery packs (21, 22) face the fixing section (14), while the second end sides (87, 87') of the battery packs (21, 22) face away from the fixing section (14), wherein the protection device (80) includes at least one first covering element (81), and wherein the first covering element (81) extends at least up to the second end side (87) of the first battery pack (21) in the longitudinal direction (85) of the first battery pack (21).

50. The working device according to claim 49, characterized in that, The protection device (80) includes at least one second covering element (82), and wherein the second covering element (82) extends at least up to the second end side (87') of the second battery pack (22) in the longitudinal direction (85') of the second battery pack (22).

51. The working device according to claim 49 or 50, characterized in that, The battery packs (21, 22) are each pushed into the fixing section (14) in their longitudinal directions (85, 85').

52. The working device according to any one of claims 49 to 51, characterized in that, The battery packs (21, 22) are pushed into the fixing section (14), and the first battery pack (21) and the second battery pack (22) each have a longitudinal axis (50, 50') extending in the longitudinal direction (85, 85') of the respective battery pack (21, 22), wherein the longitudinal axes (50, 50') are oriented parallel to the longitudinal central plane (43) of the housing (2).

53. The working device according to any one of claims 49 to 52, characterized in that, The battery packs (21, 22) are arranged offset from one another in their longitudinal directions (85, 85'), and the second end sides (87, 87') of the battery packs (21, 22) are in different planes.

54. The working device according to any one of claims 49 to 53, characterized in that, In the transverse direction (91), the battery packs (21, 22) are arranged one above the other, where the transverse direction (91) is oriented perpendicular to the longitudinal direction (85) of the first battery pack (21) and / or perpendicular to the longitudinal direction (85') of the second battery pack (22) and lies in a plane oriented parallel to the longitudinal central plane (43) of the housing (2).

55. The working device according to any one of claims 49 to 54, characterized in that, The protection device (80) includes at least one third covering element (83) and preferably at least one fourth covering element (84), where the third covering element (83) and / or in particular the fourth covering element (84) extends in the longitudinal directions (85, 85') of the battery packs (21, 22) at least as far as the second end sides (87, 87') of the battery packs (21, 22).

56. The working device according to any one of claims 49 to 55, characterized in that, The battery packs (21, 22) each have a substantially triangular cross-sectional profile (88, 88') with rounded corners (99, 99'), where the battery packs (21, 22) are preferably constructed identically, and the battery packs (21, 22) each have a rear wall (89, 89') constructed between two rounded corners (99, 99'), where the battery packs (21, 22) are arranged relative to one another in the fixed section (14) such that the rear walls (89, 89') of the battery packs (21, 22) face each other, and the first covering element (81) is arranged at the rounded corner of the first battery pack (21) facing away from the second battery pack (22), and in particular the second covering element (82) is arranged at the rounded corner of the second battery pack (22) facing away from the first battery pack (21).

57. The working device according to any one of claims 53 to 56, characterized in that, The third covering element (83) and the fourth covering element (84) are arranged between the battery packs (21, 22) in the transverse direction (91).

58. The working device according to claim 57, characterized in that, The third covering element (83) and the fourth covering element (84) are constructed to face each other relative to a plane oriented parallel to the longitudinal plane (31) of the guide rail (4).

59. The working device according to any one of claims 50 to 58, characterized in that, The protection device (80) has a clearance (90) for gripping the battery packs (21, 22) between the covering elements (81, 82, 83, 84).

60. The working device according to any one of claims 50 to 59, characterized in that, A movement clearance (92) is provided between the covering elements (81, 82, 83, 84) and the battery packs (21, 22), where the movement clearance (92) preferably narrows in the direction of the first end sides (86, 86') of the battery packs (21, 22).

61. The working device according to any one of claims 53 to 60, characterized in that, The third covering element (83) and / or the fourth covering element (84) has an outer side (97, 97') facing away from the battery pack (21, 22), wherein the outer side (97, 97') has a concave circular portion (98, 98') that projects between the battery packs (21, 22).

62. A hand-guided working device having at least one tool (12), a drive motor (10) for driving the at least one tool (12), a housing (21), a first operating element (6) configured to control the drive motor (10), and a second operating element (7) pivotably supported relative to the housing (21) about a pivot axis (17) between a non-operated position (18) and at least one operated position (19), wherein, The second operating element (7) prevents the first operating element (6) from moving in the direction of the operating position (15) of the first operating element (6) in its non-operated position (18), wherein the second operating element (7) is held in the non-operated position (18) by a spring (13), wherein the spring (13) has a clamping section (28) fixedly held at the housing, and wherein the spring (13) has an operating section (29) that interacts with the operating profile (30) of the second operating element (7), wherein the second operating element (7) has at least one operating section (26) configured to be manipulated by an operator, wherein the operating section (26) has a connecting area (27), and the operating section (26) projects outside the housing (21) through an opening (22) of the housing (21) at the connecting area, wherein the connecting area (27) of the operating section (26) extends from a first plane (36) extending perpendicular to the swing axis (17) to a second plane (37) extending perpendicular to the swing axis (17) and does not project beyond the planes (36, 37), wherein the planes (36, 37) enclose an operating section area (38) of the working device (1), and wherein the clamping section (28) and the operating section (29) at least partially extend on opposite sides of the operating section area (38).

63. The working device according to claim 62, characterized in that, The clamping section (28) and the operating section (29) are completely arranged outside the operating section area (38).

64. The working device according to claim 62 or 63, characterized in that, The spring (13) is configured as a leaf spring and extends from the clamping section (28) in the direction of the central plane (33), wherein the central plane (33) encloses an angle (α) of at least 10°, especially at least 15°, with the swing axis (17).

65. The working device according to any one of claims 62 to 64, characterized in that, The opening (22) is at least partially covered by a covering section (32) of the second operating element (7), and the connecting area (27) of the operating section (26) is arranged at the covering section (32).

66. The working device according to claim 65, characterized in that, The spring (13) has at least one contact section (39) in the contact area with the operating profile (30) at the operating section (29), and the contact section is bent away from the operating profile (30) in the circumferential direction relative to the swing axis (17), wherein the contact section (39) is arranged outside the covering section (32).

67. The working device according to claim 65 or 66, characterized in that, The spring (13) extends between the covering section (32) and the pivot axis (17), wherein the covering section (32) covers the middle region (41) of the spring (13) towards the outside of the housing (21).

68. The working device according to any one of claims 65 to 67, characterized in that, The covering section (32) extends in an arc around the pivot axis (17) over an angular range (γ) of at least 120°.

69. The working device according to any one of claims 65 to 68, characterized in that, The operating section (26) and the covering section (32) enclose an angle (β) of at least 30° at the connecting region (27).

70. The working device according to any one of claims 65 to 69, characterized in that, The actuating profile (30) and the covering section (32) delimit an opening (42) through which the spring (13) projects.

71. The working device according to any one of claims 62 to 70, characterized in that, The actuating profile (30) has at least one convex arched section (43).

72. The working device according to claim 71, characterized in that, The actuating profile (30) has two convex arched sections (43), and in the non-actuated position (18) of the second actuating element (7), the spring (13) abuts against the two convex arched sections (43).

73. The working device according to any one of claims 62 to 72, characterized in that, The first actuating element (6) is pivotably supported relative to the housing (21) about a pivot axis (16) between a non-actuated position (14) and an actuated position (15), and the pivot axis (16) of the first actuating element (6) and the pivot axis (17) of the second actuating element (7) are inclined to each other, in particular extending perpendicular to each other.

74. The working device according to any one of claims 62 to 73, characterized in that, The second actuating element (7) has a support axis (35) which extends from a first support pin (23) to a second support pin (24), and in the viewing direction of the pivot axis (16) of the first actuating element (6), the first actuating element (6) and the spring (13) are arranged on opposite sides of the support axis (35) of the second actuating element (7).

75. The working device according to any one of claims 62 to 74, characterized in that, The second actuating element (7) has at least two operating sections (26) projecting from the housing (21).

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