Handheld battery-powered work tool

Abstract

A handheld battery-powered work tool comprising a housing (1), a drive motor (M), a tool (2) driven by the drive motor (M), two battery holders (6, 7) for each receiving a battery pack (8, 9) for supplying the drive motor (M) with electrical energy, and two battery locks (21, 21'), wherein each battery holder (6, 7) is assigned a battery lock (21, 21') for locking a battery pack (8, 9) inserted therein, wherein the two battery holders (6, 7) are arranged adjacent to each other, and wherein the two battery locks (21, 21') are positioned between the two battery holders (6, 7), and wherein each battery lock (21, 21') has a locking part (22, 22') and an actuating part (23, 23'), characterized in that a the imaginary central axis (MA) runs such that the actuating parts (23, 23') of the battery locks (21, 21') are arranged offset from each other in the direction of the central axis (MA),and that the actuating parts (23, 23') of the two battery locks (21, 21') each have first actuating sections (27, 27') and second actuating sections (28, 28') and are shaped and arranged such that the second actuating sections (28, 28') of both actuating parts (23, 23') are not opposite each other with respect to the central axis (MA).

Description

[0001] The invention relates to a hand-held battery-powered work tool according to the preamble of claim 1.

[0002] Chainsaws and angle grinders feature a tool driven by their motor in a plane of motion. In a chainsaw, this is a saw chain rotating around a guide bar, while in an angle grinder, it is a cutting or grinding disc driven to rotate in a plane of rotation. These tools are guided manually by the user, with the primary objective being to guide them in the aforementioned plane of motion. This requires the user to apply appropriate force and torque, particularly to the rear handle. A well-balanced design is essential for effortless and precise guidance of these tools.

[0003] For battery-powered tools, the weight of the battery packs used plays a significant role. This is especially true for high-performance cordless chainsaws or cut-off saws, which are often equipped with two battery holders, each accommodating a separate battery pack, to provide sufficient power. To avoid an excessively long design, the two battery holders are positioned side by side. A central point of the battery holders lies laterally between them, and when two identical battery packs are inserted, this point roughly coincides with their combined center of gravity. Because the two battery holders are positioned side by side and occupy a considerable width, their central point is located far to the side of the tool's plane of movement. Consequently, the combined center of gravity of both battery packs is positioned to the side of the tool, creating a large lever arm.The moment around the longitudinal axis generated by the weight of the battery packs and the aforementioned lever arm must be compensated for by the user using manual force, particularly at the rear handle. The device tends to tilt during operation, which impairs the precision of the cut and is also strenuous.

[0004] The battery packs inserted into the battery holders must be secured against falling out by a suitable, releasable locking mechanism. If such battery locks are positioned between the two battery holders for easy access, they require a corresponding amount of space, which increases the lateral distance between the battery holders and / or between the inserted battery packs. This also increases the eccentricity of the battery holder's center point and the resulting difficulties described above. This is all the more true considering that, in addition to the lateral space for the two battery locks, there must also be room for the user to insert at least one finger.

[0005] DE 10 2021 006 082 A1 discloses a handheld cut-off saw with two battery packs positioned side by side. The corresponding battery locks are attached to the batteries and face each other when inserted. An intermediate central axis runs precisely in line with the cutting disc and the rear handle. Therefore, no moment of force or tendency to tip, as described above, occurs. DE 10 2020 103 089 A1 discloses a battery-powered high-pressure cleaner, also with two battery packs. In this design, the two batteries and battery holders are arranged directly next to each other. The corresponding battery locks are located not between, but behind the pair of batteries. The pump unit, which holds the battery packs, is placed on the ground during operation, so that again no moment of force or tendency to tip occurs.

[0006] The invention is based on the objective of further developing a generic hand-held battery-powered work tool in such a way that the lateral installation space requirement is reduced while maintaining good user comfort.

[0007] This problem is solved by a hand-held battery-powered work tool with the features of claim 1.

[0008] According to the invention, the two battery mounts are arranged adjacent to each other, with the two battery locks positioned between them. Each battery lock has a locking element and an actuating element. An imaginary central axis runs between the battery mounts. The actuating elements of the battery locks are offset from each other along this central axis. This prevents the two actuating elements from overlapping. Manual operation of the two actuating elements independently is thus easily possible even with very limited lateral space. Despite the intervening battery locks, the battery mounts can be positioned close to each other laterally, making the cordless power tool narrower and bringing the center of gravity closer to the tool, thereby improving the tool's balance.

[0009] The battery mounts are advantageously positioned opposite each other along the central axis, meaning they are arranged without any longitudinal offset. This results in a compact design in the longitudinal direction.

[0010] In a preferred embodiment, the locking elements are arranged centrally along the axis of the respective battery receptacle. This keeps the inserted battery packs centered, preventing them from tilting under load.

[0011] In a preferred embodiment, the actuating elements of the battery locks are arranged offset from the associated locking elements in the direction of the central axis. In particular, the battery receptacles are positioned opposite each other in a lateral direction orthogonal to the central axis, with the two battery locks being identical components and arranged point-symmetrically to each other with respect to an axis of symmetry orthogonal to both the central axis and the lateral direction. This results in an overall compact design with good accessibility of the actuating elements independently of each other.

[0012] The battery locks can be designed as sliders, push buttons, or similar devices. In particular, the battery locks are designed as pivoting locking levers with pivot axes running parallel to the central axis. This results in a robust and durable design with a small footprint.

[0013] In a preferred embodiment, the actuating elements of the two battery locks each have first actuating sections and second actuating sections and are arranged such that the respective first actuating sections of both actuating elements are opposite each other with respect to the central axis, and that the second actuating sections of both actuating elements are not opposite each other with respect to the central axis. This combines two actuating options. Firstly, the battery locks can be actuated independently at the second actuating sections. Secondly, both battery locks can be actuated simultaneously at the directly opposite first actuating sections with just one movement or finger press to unlock both battery packs together.

[0014] In an advantageous embodiment, the two battery holders are designed to accommodate both battery packs in the same rotational position. This means that, despite the central positioning of the battery locks between the battery holders, the user does not have to find different rotational positions for the two battery packs, but can intuitively insert them symmetrically.

[0015] In a further aspect of the invention, the tool is arranged at a front end of the housing, with a rear handle being arranged at a rear end of the housing. A lateral direction extends orthogonally to the plane of movement of the tool, with the two battery receptacles lying side by side in the lateral direction and enclosing a battery receptacle center point between them. The battery receptacle center point is located, measured laterally, at a lateral distance from the plane of movement of the tool. The rear handle is located, measured laterally, at a lateral distance from the plane of movement of the tool. According to the invention, the lateral distance from the handle is greater than the lateral distance from the center point. Advantageously, the lateral distance from the handle is at least 5% and, in particular, at least 10% greater than the lateral distance from the center point.In other words, the center of gravity of the battery packs, measured laterally, lies between the rear handle and the plane of movement of the tool. The combined center of gravity of both battery packs thus generates a torque around the lower line of engagement of the tool during normal operation, which is less than if it were located at a distance equal to or greater than the lateral distance between the handle and the tool. Consequently, less counter-torque is required at the rear handle of the cordless chainsaw or cordless angle grinder.

[0016] The cordless chainsaw or cordless cut-off saw has a net center of gravity without battery packs and a gross center of gravity with battery packs installed. These two centers of gravity are located laterally at a first lateral distance and a second lateral distance from the tool's plane of motion, respectively. Specifically, the lateral grip distance is at least 1.25 times, and especially at least 1.5 times, the first lateral distance of the net center of gravity. Furthermore, the lateral grip distance is at least 1.15 times, and especially at least 1.3 times, the second lateral distance of the gross center of gravity. These geometric parameters also contribute to improved tool balance.

[0017] In a preferred embodiment, the battery-powered chainsaw or cut-off saw has a front handle with a side grip section, wherein the rear handle, measured laterally, is located between the center of the battery mount and the side grip section. During horizontal work, sawing, or cutting, the rear handle is positioned higher than in the prior art, with only a small height difference to the aforementioned side grip section. The user can grip, carry, and guide the tool with both hands at nearly the same height, thus improving the tool's balance even in this application.

[0018] The battery holders have an imaginary center plane between them. Furthermore, each battery holder has an electrical contact for connecting the respective battery pack to the battery-powered chainsaw or cut-off saw. In a preferred embodiment, the first contact distance of the first electrical contact of the first battery holder to the imaginary center plane and the second contact distance of the second electrical contact of the second battery holder to the imaginary center plane are unequal. Each battery pack has at least one HMI element (HMI = Human-Machine Interface).In a further preferred embodiment, the battery receptacles are designed such that, when the battery packs are inserted, the first element distance of the first HMI element of the first battery pack to the imaginary center plane and the second element distance of the corresponding second HMI element of the second battery pack to the imaginary center plane are not equal. This improves user-friendliness, as battery packs can be inserted side by side into the corresponding battery receptacles without rotation.

[0019] An embodiment of the invention is explained in more detail below with reference to the drawing. The drawing shows: Fig. 1 in a perspective view a battery-powered chainsaw with a guide rail attached to it, with a rear handle and with two battery packs arranged side by side, Fig. 2 in a top view, the battery-powered chainsaw Fig. 1 with details of the lateral positioning of the rear handle and the two battery mounts, Fig. 3 in an enlarged detail view the battery area of ​​the battery chainsaw according to Fig. 1 with details on the lateral positioning of HMI elements of the battery packs used, Fig. 4 in a rear view of individual components, the two battery mounts of the battery chainsaw according to the Fig. 1, Fig. 2 to Fig. 3 with details on the lateral positioning of electrical contacts, Fig. 5 in an enlarged top view the battery compartment of the battery chainsaw according to Fig. 1 with details on the point-symmetric arrangement of two battery locks, and Fig. 6 in a side view a battery pack and a battery lock engaged with it, shown as a detached individual part.

[0020] Fig. Figure 1 shows a perspective view of a hand-held power tool according to the invention, using a battery-powered chainsaw as an example. However, the invention could also refer to a battery-powered cut-off saw. Other portable battery-powered power tools are also possible within the scope of the invention. The battery-powered chainsaw comprises a housing 1 in which an electric drive motor M, shown only schematically, is arranged to drive a tool 2. The drive motor M is supplied with electrical energy via two battery packs 8 and 9.

[0021] As in Fig. As shown in Figure 1, the housing 1 extends along a longitudinal direction x from a rear end 15 to a front end 14. The tool 2 is located at the front end 14 of the housing 2 and is driven by the drive motor M in a plane of motion E. BThe tool 2 is designed as a saw chain 16 in the illustrated embodiment, which is driven around a guide rail 17 by the drive motor M via a drive element during operation.

[0022] The flat guide rail 17, due to its flat design, defines the plane of movement E. B of tool 2. The plane of motion E B It lies parallel to the longitudinal direction x and also defines a lateral direction y and a vertical direction z. The vertical direction z, like the longitudinal direction x, lies parallel to the plane of motion E. B , where the vertical direction z is orthogonal to the longitudinal direction x. The lateral direction y is orthogonal to the plane of motion E. B , i.e. orthogonal to both the longitudinal direction x and the vertical direction z.

[0023] The guide rail 17, together with the tool 2, which is designed as a saw chain 16, is arranged at the front end 14 of the housing 2. It extends from the front end 14 in a direction pointing away from the rear end 15. The guide rail 17 thus projects beyond the housing 2 at its front end 14. Furthermore, the tool 2, together with the guide rail 17, is arranged eccentrically with respect to the lateral direction y, near a side surface of the housing 1.

[0024] Furthermore, in Fig. It is evident that the battery-powered chainsaw comprises a rear handle 3 and a front handle 4 for guiding and carrying the portable battery-powered chainsaw. For the purposes of this application, the term "portable" means that the battery-powered chainsaw is carried during its intended use. A hand guard 19 is positioned in front of the front handle 4. The hand guard 19 is pivotally mounted to the housing 1 and serves as a trigger for a braking device (not shown in detail) that acts on the tool 2.

[0025] The rear handle 3 is formed on the housing 1. In other words, the rear handle 3 forms the rear end 15 of the housing 1. The front handle 4 is arranged in the longitudinal direction x in front of the rear handle 3 and encompasses the housing 1 from one longitudinal side, across the top, to the other longitudinal side of the housing 1. The front handle 4 has an upper handle section 18 located in the vertical direction z above the housing 1. It also has a lateral handle section 5 located laterally y next to the housing 1, on the side opposite the tool 2.

[0026] The above-described concept of a battery-powered chainsaw, and also the details of the invention described below, apply analogously to the alternative design provided within the scope of the invention as a battery-powered cut-off grinder, wherein the tool 2 is then designed as a rotating cutting or grinding disc, and wherein its plane of rotation is the plane of movement E B specifies.

[0027] Fig. Figure 2 shows the battery-powered chainsaw in a top-down view. Fig. 1. The two battery packs 8, 9 are inserted from above into their respective, schematically indicated, slot-shaped battery receptacles 6, 7 and locked in place by means of battery locks 21, 21', which are described in more detail below. The two battery receptacles 6, 7 lie side by side in the lateral direction y and form a battery receptacle center point P between them. A one. The battery recording center P AThe common geometric center of both battery mounts 6, 7 is measured at least in the lateral direction y, and also in the longitudinal direction x. The battery mount center point P A lies in the lateral direction y measured at a lateral center distance a PA to the plane of motion E B of tool 2.

[0028] The rear handle 3 extends along a handle axis that runs in a direction defined by the longitudinal direction x and the vertical direction z. The rear handle 3, or more precisely, the handle axis of the rear handle 3, is located at a lateral distance a in the lateral direction y. G to the plane of motion E B of the tool. In particular, from a top view. Fig. 2 can be seen that the lateral handle distance a G is greater than the lateral center distance a PA In particular, the lateral handle spacing aG at least 5% and in particular at least 10% larger than the lateral center distance a PA In the preferred embodiment shown, the lateral handle spacing a G approximately 13.6% larger than the lateral center distance a PA .

[0029] Furthermore, the battery-powered chainsaw has two relevant load states: with and without battery packs 8, 9 inserted into battery holders 6, 7. If the battery packs 8, 9 are not inserted into battery holders 6, 7, the battery-powered chainsaw has a net center of gravity SP. n on, which, measured in the lateral direction y, at a first lateral center of gravity distance a SPn to the plane of motion E B of tool 2. In particular, the lateral handle distance a is G at least 1.25 times, in particular at least 1.5 times, the first lateral center of gravity distance a SPn, and in the preferred embodiment shown, it is approximately 1.59 times that amount.

[0030] With battery packs 8 and 9 installed, as shown in the drawing, the battery-powered chainsaw has a gross center of gravity SP b on, which in the lateral direction y at a second lateral center of gravity distance a SPb to the plane of motion E B of tool 2. In the case of the battery packs 8, 9 used, as shown in the illustration. Fig. 2. The lateral handle distance is a. G in particular at least 1.15 times, in particular at least 1.3 times, the second lateral center of gravity distance a SPb , and in the preferred embodiment shown, it is approximately 1.40 times that amount.

[0031] In the case of vertically performed work or sawing or separating cuts, where the plane of movement E BSince the tool lies parallel to the direction of the weight force, a reaction force acts on tool 2 in the vertical direction z upwards during normal operation, i.e. in the Fig. 2 towards the viewer. The user must apply a corresponding counterforce at the rear handle 3. An imaginary line of action 20 can be drawn through a fictitious point of application of the reaction force on the tool 2 and also through approximately the middle of the rear handle 3, i.e., through the point of application of the hand force, which in Fig. 2 is shown. To relieve the user at the rear handle 3, the invention aims to minimize any moments acting around the line of action 20. The moments at the net center of gravity SP n and especially at the gross focus SP b The acting weight force also acts parallel to the plane of motion E. B, and thereby generates a weight force moment acting around the aforementioned line of action 20. Due to the large lateral handle spacing a according to the invention. G The intervention line 20 moves close to the net center of gravity SP. n and especially close to the gross center SP b The acting weight forces are so close together and consequently have such a short lever arm relative to the line of action 20 that the resulting weight force moments are small, and therefore the user does not need to exert any corresponding counter-moments on the rear handle 3 using hand force. The user is relieved of strain, and the battery-powered chainsaw or cut-off saw can be operated more precisely within its established plane of motion E. B hold.

[0032] According to the presentation Fig. 2 can still be seen that the rear handle 3 is measured in the lateral direction y between the battery mounting center point P A and the lateral grip section 5. This is particularly important for horizontal work or sawing operations where the battery-powered chainsaw is held and guided with one hand on the rear handle 3 and with the other hand on the lateral grip section 5 of the front handle 4. The direction of the weight force corresponds to the lateral direction y. Due to its positioning according to the invention, the rear handle 3 is located relatively high and close to the lateral grip section 5 in the lateral direction y. In other words, it lies only slightly below the lateral grip section in the direction of the weight force. This makes it easier for the user to carry and guide the chainsaw with both hands during horizontal work, as they only have to compensate for small differences in height with their two hands.

[0033] Fig. Figure 3 shows an enlarged detail view of the battery compartment of the battery-powered chainsaw from above. Fig. 1 with inserted battery packs 8, 9. Both battery packs 8, 9 are identical and each has an HMI element 12, 13 (HMI = Human-Machine Interface). In this case, the HMI elements 12, 13 are combinations of an illuminated bar display and a push button, which the user can use to query the charge status of the respective battery pack 8, 9. However, different versions of the HMI elements 12, 13 with additional and / or different functions are also possible.

[0034] Fig. Figure 4 shows a rear view of individual components, showing the two battery mounts 6, 7 of the battery-powered chainsaw. Fig. 1, Fig. 2 to Fig. 3 with battery packs 8, 9 inserted and locked from above. The two battery receptacles 6, 7 are each provided with an electrical contact 10, 11 into which matching contacts of the battery packs 8, 9 engage, and through which an electrical connection is established between the battery chainsaw and the respective battery packs 8, 9 inserted.

[0035] From the overall view of Fig. 3 and Fig. 4 shows that the battery recordings 6, 7 have an imaginary middle plane E between them. M exhibiting a longitudinal dimension x and a vertical dimension z. The battery receptacles 6, 7 are designed such that, when the battery packs 8, 9 are inserted, a first element spacing a E1 of the first HMI element 12 of the first battery pack 8 to the imaginary middle plane E M and a second element spacing a E2 of the corresponding second HMI element 13 of the second battery pack 9 to the imaginary middle plane E Mare unequal.

[0036] The same applies, in essence, to the electrical contacts 10, 11: A first contact distance a K1 the first electrical contact 10 of the first battery receptacle 6 to the imaginary central plane E M and a second contact distance a K2 the second electrical contact 11 of the second battery receptacle 7 to the imaginary central plane E M are unequal.

[0037] In both cases, the inequalities in the distances are chosen such that, in the top view, the representation is as follows: Fig. 3. The two battery packs 8, 9 are not point-symmetrical about the battery mounting center point P. A , but are plugged in and put into operation side by side in the same direction.

[0038] From above Fig. 2. It is evident that the housing 1 to the left of the first battery compartment 6 is wider than to the right of the second battery compartment 7. In conjunction with a further comparison with the Fig. 3 and Fig. 4. It follows from this that the middle plane E M This is not identical to an imaginary, parallel, but not shown, center plane of housing 1. Rather, the center plane of housing 1 lies to the left of center plane E. B The battery mounts 6 and 7 are located on the left side, i.e., the side facing away from tool 2, to provide space for an air filter (not shown). Other device components with a comparatively high mass are located more on the right side, facing tool 2. This also contributes to the low net center of gravity (SP). n and in particular the gross focus SP b . come to lie close to the intervention line 20.

[0039] Fig. Figure 5 shows an enlarged top view of the battery compartment of the battery-powered chainsaw. Fig. Figure 1 shows details of the arrangement of the battery locks 21, 21'. It can be seen that each of the two battery receptacles 6, 7 is assigned a battery lock 21, 21'. The battery lock 21 prevents a battery pack 8 inserted into battery receptacle 6 from unintentionally falling out. Similarly, the battery lock 21' prevents a battery pack 9 inserted into battery receptacle 7 from unintentionally falling out.

[0040] The two battery receptacles 6, 7 are arranged adjacent to each other. In the illustrated embodiment, they are laterally adjacent to each other in the lateral direction y. The two battery locks 21, 21' are positioned between the two battery receptacles 6, 7. An imaginary central axis MA runs between the battery receptacles 6, 7, which lies in the central plane E mentioned above. MThe two battery mounts 6, 7 can be offset from each other in the direction of the central axis MA. In other words, one of the two battery mounts 6, 7 can be positioned further in front of or behind the other battery mount 7, 6. In this case, they are arranged opposite each other in the lateral direction y, which is orthogonal to the central axis MA, and are therefore in the same position in the direction of the central axis MA.

[0041] Fig. Figure 6 shows a side view of a battery pack 8 inserted into the schematically indicated battery receptacle 6 and a battery lock 21, shown as a separate component, engaged with it. The description here applies analogously to the further battery pack 9 inserted into the battery receptacle 7 with its associated battery lock 21'. The drawing plane in Fig. 6 lies parallel to the middle plane E M In summary, the Fig. 4, Fig. 5 and Fig. Figure 6 shows the position of a symmetry axis SA for the two battery locks 21, 21' and the position of the central axis MA. In the optional configuration shown here, the symmetry axis SA lies in the central plane E. M and is perpendicular to both the central axis MA and the lateral direction y. Additionally, the axis of symmetry SA, also optionally, runs through the battery mount center point P. A ( Fig. 3) The axis of symmetry SA can lie parallel to the vertical axis z. In particular, from Fig. From section 6, it follows that the axis of symmetry SA is tilted slightly backwards relative to the vertical axis z and forms an acute angle of ≤ 10° with the vertical axis z. Other angles may also be suitable. The same applies to the position of the central axis MA relative to the longitudinal direction x. The axis of symmetry SA runs in the median plane E. Mviewed parallel to an insertion direction of the battery packs 8, 9 into the associated battery receptacles 6, 7 (not shown in the drawing). The battery receptacles 6, 7 are designed such that the two battery packs 8, 9 are not inserted exactly opposite the vertical direction z, i.e., not exactly from above, but slightly diagonally from back-top to front-bottom.

[0042] With reference in particular to Fig. The battery lock 21 comprises a locking element 22 and an actuating element 23. The battery lock 21 is designed as a pivotable locking lever with an axle pin 26 between the locking element 22 and the actuating element 23, wherein the locking element 22 is arranged centrally to the associated battery receptacle 6 in the direction of the central axis MA, and wherein the locking element 22 also centrally overlaps the axis of symmetry SA. The actuating element 23, on the other hand, is positioned off-center to this and to the associated locking element 22 in the direction of the central axis MA, as described in more detail below.

[0043] The pivotable locking lever is pivotally mounted on the housing 1 by means of the pivot pin 26, the pivot pin defining a pivot axis 25 parallel to the central axis MA. The battery pack 8 has a locking engagement 29 on at least one of its side surfaces, which, when the battery pack 8 is inserted, rests against the locking element 22 and thus holds the battery pack 8 in its inserted position. By manually pressing, for example with a finger, the locking lever performs a pivoting movement about the pivot axis 25, as a result of which the locking element 22 releases the locking engagement 29 of the battery pack 8, so that the battery pack 8 can be removed upwards from the battery receptacle 6. The same applies analogously to the other battery receptacle 7, the associated battery pack 9, and the associated battery lock 21' with its locking element 22' and its actuating element 23'.

[0044] With reference in particular to Fig. Figure 5 shows that the actuating elements 23, 23' of the battery locks 21, 21' are arranged offset from each other in the direction of the central axis MA, meaning that they are in different positions in the direction of the central axis MA. This ensures that even with a small distance between the battery receptacles 6, 7, each actuating element 23, 23' can be manually actuated without being affected by the other actuating element 23', 23.

[0045] The two battery locks 21, 21' are designed as identical parts. In particular in Fig. Figure 5 shows that the two battery locks 21, 21' are arranged point-symmetrically with respect to the axis of symmetry SA, which lies orthogonal to the central axis MA and orthogonal to the lateral direction y, i.e., rotated 180° relative to each other. The actuating elements 23, 23' of the two battery locks 21, 21' each have first actuating sections 27, 27' and second actuating sections 28, 28'. The two actuating elements 23, 23' are shaped and arranged such that the respective first actuating sections 27, 27' of both actuating elements 23, 23' are opposite each other with respect to the central axis MA in the lateral direction y. This allows both battery locks 21, 21' to be actuated manually at the same time, for example, by the user pressing against the two opposing first actuating sections 27, 27' simultaneously with one finger.Furthermore, the two actuating parts 23, 23' are shaped and arranged such that the second actuating sections 28, 28' of both actuating parts 23, 23' are not opposite each other with respect to the central axis MA. This allows the battery locks 21, 21' to be manually actuated individually and independently of each other, for example by the user pressing a finger against the respective second actuating section 28, 28' of the desired actuating part 23, 23' without coming into contact with the other actuating part 23', 23.

[0046] From the overall view of Fig. 3, Fig. It follows from Figure 4 that the two battery receptacles 6, 7 are designed for the two inserted battery packs 8, 9 to be oriented in the same direction. The two battery packs 8, 9 have guide projections 24 that allow them to be inserted in only one specific orientation. The same orientation here means that certain characteristic features, such as the HMI elements 12, 13, point towards the same side, in this case, the left side of the device. To enable this in conjunction with the central position of the battery locking mechanisms 21 between the two battery receptacles 6, 7, the battery packs 8, 9 each have a locking engagement 29 on their two opposing side surfaces, as shown schematically in Figure 4. Fig. 4 is indicated. In this way, the locking parts 22, 22' of the two battery locks 21, 21' can engage with a locking engagement 29 of each of the two battery packs 8, 9 and bring about the desired positional locking.

Claims

[1] Handheld battery-powered work tool comprising a housing (1), a drive motor (M), a tool (2) driven by the drive motor (M), two battery holders (6, 7) for each receiving a battery pack (8, 9) for supplying the drive motor (M) with electrical energy, and two battery locks (21, 21'), wherein each battery holder (6, 7) is associated with a battery lock (21, 21') for locking a battery pack (8, 9) inserted therein, wherein the two battery holders (6, 7) are arranged adjacent to each other, and wherein the two battery locks (21, 21') are positioned between the two battery holders (6, 7), and wherein each battery lock (21, 21') has a locking part (22, 22') and an actuating part (23, 23'), characterized by, that an imaginary central axis (MA) runs between the battery receptacles (6, 7), that the actuating parts (23, 23') of the battery locks (21, 21') are arranged offset from each other in the direction of the central axis (MA), and that the actuating parts (23, 23') of the two battery locks (21, 21') each have first actuating sections (27, 27') and second actuating sections (28, 28') and are shaped and arranged in such a way that the second actuating sections (28, 28') of both actuating parts (23, 23') are not opposite each other actuating part (23', 23) with respect to the central axis (MA). [2] Battery-powered work tool according to claim 1, characterized by , that the battery mounts (6, 7) are arranged opposite each other with respect to the central axis (MA). [3] Battery-powered work tool according to claim 1 or 2, characterized by , that the locking parts (22, 22') are arranged in the direction of the central axis (MA) centrally to the respective associated battery receptacle (6, 7). [4] Battery-powered work tool according to one of claims 1 to 3, characterized by , that the actuating parts (23, 23') of the battery locks (21, 21') are arranged offset in the direction of the central axis (MA) from the associated locking parts (22, 22'). [5] Battery-powered work tool according to any one of claims 1 to 4, characterized by , that the battery receptacles (6, 7) are opposite each other in a lateral direction (y) orthogonal to the central axis (MA), wherein the two battery locks (21, 21') are designed as identical parts and are arranged point-symmetrically to each other with respect to an axis of symmetry (SA) orthogonal to the central axis (MA) and to the lateral direction (y). [6] Battery-powered work tool according to any one of claims 1 to 5, characterized by , that the battery locks (21, 21') are designed as pivotable locking levers with pivot axes (25) running parallel to the central axis (MA). [7] Battery-powered work tool according to any one of claims 1 to 6, characterized by, that the actuating parts (23, 23') of the two battery locks (21, 21') are arranged such that the respective first actuating sections (27, 27') of both actuating parts (23, 23') are opposite each other with respect to the central axis (MA). [8] Battery-powered work tool according to any one of claims 1 to 6, characterized by , that the two battery mounts (6, 7) are designed to accommodate the two battery packs (8, 9) in the same rotational position.

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