MACHINE TOOL WITH A MOTOR ARRANGED LONGITUDINAL TO A CUTTING AXIS

Description

[0001] The present invention relates to a machine tool with at least one accumulator as an energy source and at least one motor. The machine tool is characterized in that the motor is arranged substantially longitudinally to a cutting axis S of the machine tool and is located substantially on a first side of the cutting axis S, while the at least one accumulator is arranged substantially on a second side of the cutting axis S. This arrangement of motor and accumulator makes it possible to provide a particularly well-balanced machine tool. Furthermore, the arrangement of the motor in the longitudinal direction of the machine tool makes it possible to easily achieve a positive drive for the tool of the machine tool. Background of the invention:

[0002] In the field of machine tools, cut-off grinders or angle grinders are well known. They can be used to make cuts in the material to be machined or to machine the surface of a material. Such cut-off or angle grinders typically have a disc-shaped tool called a cutting or grinding wheel.

[0003] Due to the increase in available capacities in the area of rechargeable batteries, more and more battery-powered cutting grinders are being introduced onto the market, particularly for applications where petrol-powered cutting grinders were previously used.

[0004] In many machine tools known from the prior art, the motor is arranged transversely to the cutting direction or transversely to the cutting axis. Such machine tools typically have a belt drive, with belt drives enabling effective transmission of the motor's rotational movement to the machine tool's tool. This is particularly true because the torque to be transmitted by the motor is smaller than the torque that can be transmitted by the belt drive. However, arranging the motor transversely to the cutting axis of the machine tool can make braking the machine tool more difficult, as the high braking torque may not be sufficiently transmitted to stop the machine tool's tool quickly enough.

[0005] For example, EP 3 216 567 A1 discloses a cordless cutting machine according to the preamble of claim 1, in which a length of the cutting machine runs centrally through the battery of the cutting machine.

[0006] WO 2016 096 244 A1 describes a machine tool in which a tool holder or a tool holder surface runs below or on an underside of the machine tool.

[0007] EP 3 015 224 A1 discloses a screw tightening tool that can be connected as a tool with a bit.

[0008] US Pat. No. 5,142,825 A describes a machine tool for cutting elongated material, comprising an elongated portable frame and a motor mounted on the frame. A circular saw blade is provided as the tool.

[0009] US 10 994 404 B2 discloses a machine tool which can be designed, for example, as an angle grinder, wherein a tool can be connected to the machine tool via a tool holder on the underside of the device.

[0010] The object underlying the present invention is to overcome the above-described deficiencies and disadvantages of the prior art and to provide a machine tool that is handy and compact, allowing for efficient work, even over extended periods. Furthermore, experts would welcome improvements and safer design of the braking system. Furthermore, the design of the machine tool and the arrangement of the components within the machine tool should be as simple, compact, and robust as possible, and the machine tool should offer good ergonomics.

[0011] The object is achieved by the subject matter of claim 1. Advantageous embodiments of the subject matter of the independent claims can be found in the dependent claims. Description of the invention:

[0012] According to the invention, a machine tool is provided with at least one accumulator as an energy source, wherein the machine tool comprises a tool that is disk-shaped. The machine tool furthermore has a motor that comprises a motor axis M, wherein the motor axis M of the machine tool is designed substantially parallel to a cutting axis S of the machine tool. Furthermore, the motor is located substantially on a first side of the cutting axis S, while the at least one accumulator is arranged substantially on a second side of the cutting axis S. The cutting axis S lies in a plane that is spanned by the tool of the machine tool, wherein the cutting axis S runs substantially centrally through the machine tool.

[0013] In particular, the invention eliminates the need for a belt drive. Instead, a positive drive of the machine tool's tool is enabled. By eliminating the belt drive, high braking torques can advantageously be transmitted sufficiently quickly to stop the machine tool's tool quickly enough and safely prevent injury to the machine tool's user. It has been shown that the invention ensures particularly rapid tool braking even when high tool speeds are combined with short transmission times.

[0014] In particular, it is preferred within the meaning of the invention that the motor and the at least one rechargeable battery are located on different, opposite sides of the cutting axis of the machine tool. In other words, the motor of the machine tool can be located on one side of the cutting axis, while the rechargeable battery is arranged on the other side of the cutting axis. If the machine tool has two or more rechargeable batteries, it is preferred within the meaning of the invention that all batteries are located essentially on one side of the cutting axis of the machine tool, while the motor is arranged essentially on the other side of the cutting axis.

[0015] The term "essentially" is not an unclear term for the person skilled in the art, because the person skilled in the art knows that it can mean, for example, that the larger part of the base area of the object, for example battery or motor, is placed on one side of the cutting axis. In the embodiment of the invention, which is shown in Fig. 4As shown, both the motor and the two batteries are each arranged entirely on opposite sides of the cutting axis of the machine tool. The cutting axis preferably divides the machine tool into two halves, which, however, are not mirror-symmetrical. The side of the machine tool on which the motor is arranged can be referred to as the "motor side" of the machine tool within the meaning of the invention, while the other side of the machine tool, on which the at least one battery is arranged, can be referred to as the "battery side". The wording "essentially" can preferably also mean within the meaning of the invention that a small part of the volume of the object, such as the battery or motor, can protrude beyond the cutting axis, with the larger part of the volume of the battery or motor being arranged further on the battery or motor side of the machine tool.By arranging the motor and at least one battery on different sides of the cutting axis of the machine tool, a particularly well-balanced machine tool can be created, which, thanks to its excellent balance, is particularly easy and effortless to operate. Tests have shown that the proposed machine tool can be used for surprisingly long periods without causing any physical strain or being perceived as stressful.

[0016] The wording that "the motor is arranged substantially longitudinally to a cutting axis S of the machine tool" is also not an unclear formulation for the person skilled in the art, since the person skilled in the art knows that this means that a motor axis M of the machine tool is configured substantially parallel to the cutting axis S of the machine tool. The wording "substantially" is preferably to be understood to encompass not only mathematically exact parallelism of the axes, but also minor deviations from mathematically exact parallelism. Such deviations can, for example, be in a range of + / - 5°. The term "motor axis" in the sense of the invention is preferably to be understood as the axis of rotation of the moving parts of the motor of the machine tool. The moving parts of the motor can, in particular, be the rotor of the motor, which is preferably configured as an electric motor.

[0017] The formulation that the motor of the machine tool is arranged substantially longitudinally to its cutting axis S means, in the sense of the invention, that the motor is not arranged transversely to the cutting axis, as is customary in the prior art. The subject matter of the invention is thus distinguished from the prior art due to the arrangement of the motor in the longitudinal direction of the machine tool. As is evident, for example, from Fig. 4 As can be seen, a central axis runs through the motor of the machine tool essentially parallel to the cutting axis of the machine tool. The cutting axis S of the machine tool runs essentially centrally, i.e., centrally, through the machine tool. The cutting axis of the machine tool runs centrally, i.e., centrally, through a tool of the machine tool. In other words, the cutting axis lies in a plane spanned by the disk-shaped tool of the machine tool.

[0018] The arrangement of the motor in the longitudinal direction of the machine tool has the advantage that a positive drive for the machine tool can be provided in a simple manner. Such a positive drive for the machine tool is preferably referred to as a "direct drive" in the context of the invention. Fig. 4 It shows how the motor of the machine tool is connected directly to the tool - in this case a cutting, cutting or grinding wheel - via the gearbox, whereby the motor is set up to drive the tool via the gearbox.

[0019] The proposed arrangement of the at least one battery and the motor within the machine tool also allows for a compact design of the machine tool, which advantageously requires a particularly short and handy main body.

[0020] According to the invention, it is preferred that the machine tool comprises a gearbox, wherein the gearbox is arranged on the side of the cutting axis S of the machine tool on which the motor is also arranged. Preferably, the motor side of the machine tool can comprise the gearbox of the machine tool, so that in this embodiment of the invention, the motor and gearbox of the machine tool are arranged on one side of the cutting axis of the machine tool, while the at least one battery is arranged on the other, opposite side of the cutting axis.

[0021] According to the invention, it is preferred that the transmission of the machine tool is not designed as a belt drive, but rather as a positive-locking transmission. By avoiding or omitting the belt drive, the occurrence of undesirable slippage can be prevented and, advantageously, particularly trouble-free and robust operation of the machine tool can be ensured. Furthermore, the positive-locking design of the transmission of the proposed machine tool makes it particularly easy to implement devices and methods in the machine tool that enable protection against kickback events. For example, a kickback brake can be provided on the machine tool, wherein the kickback brake is designed to brake the tool of the machine tool or to switch off the machine tool as a whole if a kickback event is detected.

[0022] It is preferred in the sense of the invention that the machine tool comprises a main body in which the motor and the at least one battery can be accommodated. Examples of a possible arrangement of the batteries within the main body of the machine tool are shown in the Fig. 1 and 2 shown.

[0023] It is preferred within the meaning of the invention that different types of rechargeable batteries can be used as an energy source. In this case, batteries which, for example, have a comparatively large volume and a large capacity can be used. The machine tool can preferably have interfaces and / or contact surfaces which can interact with different types of rechargeable batteries. This can be achieved, for example, in that the rechargeable batteries used as an energy source in the proposed machine tool have interfaces and / or contact surfaces which are designed to correspond to the interfaces and contact surfaces of the machine tool. The capacity of the rechargeable batteries can, for example, be between 3 and 15 ampere hours (Ah), and their volume can, depending on the capacity, be between 700 and 1,500 cm3.

[0024] The invention specifically proposes an arrangement of components for a preferably handheld, battery-operated cut-off machine with at least one rechargeable battery, preferably two rechargeable batteries. The position of the rechargeable batteries ("batteries") and the interface for the batteries is preferably selected so that the batteries are optimally protected against dust, metal shavings, sparks, or mud during cutting. Tests have shown that the batteries and their interface, as well as their contacts, can be particularly effectively protected against environmental influences such as rain or moisture using the invention or the proposed arrangement.

[0025] The proposed arrangement of the motor and at least one battery is optimized, particularly with regard to robustness, compactness, ergonomics, and assembly. The at least one battery can advantageously be inserted from any direction, with the "top" direction being particularly preferred. In particular, the at least one battery is particularly easily accessible, allowing it to be replaced quickly and easily if necessary.

[0026] According to the invention, it is preferred that the power tool is a cut-off grinder. The cut-off grinder may comprise a rear region formed, for example, by a main body and a protective frame. The main body of the cut-off grinder may be surrounded by a housing and comprise a control unit, a drive or drive train, and / or a motor. The protective frame may comprise a front, circumferential handle and a second, upper handle. The front part of the power tool is formed by its tool, which, particularly when the power tool is designed as a cut-off grinder, is a disk-shaped tool. It may in particular be referred to as a cutting disk.According to the invention, the spatial directions "front" and "back" are defined by the front region of the machine tool, formed by the tool, and by the rear region of the machine tool, formed, among other things, by the main body. The spatial regions "top" and "bottom," or the "upper side" and "lower side," of the machine tool are preferably defined by the upper handle ("top side"), which, according to the invention, is preferably also referred to as the second handle, and by the protective frame, the underside of which preferably runs along the underside of the machine tool.

[0027] According to the invention, it is preferred that the power tool comprises a first, circumferential handle, a second, upper handle, and a protective frame for protecting the main body of the power tool. The first, circumferential handle preferably runs in the region of the transition between the front and rear areas of the power tool and is usually held by a right-handed person in the left hand when using the power tool. In this respect, the first, circumferential handle can also be used to transport the power tool. Due to the circumferential design of the first handle, the first handle offers effective impact protection on the sides of the power tool, in particular if the power tool were to land on the right or left side of the device if it were to fall.The circumferential design of the first handle protects in particular the components of the machine tool arranged in the main body of the machine tool, such as the motor, drive or gear, but also the batteries. According to the invention, it is preferred that a plane in which the first handle predominantly runs runs essentially orthogonal to a longitudinal axis of the machine tool. The longitudinal axis, which can be conceptually laid through the machine tool, runs in particular centrally through the device and extends from the front region of the machine tool towards its rear region. According to the invention, it is preferred that the plane in which the first handle predominantly runs is essentially perpendicular to the longitudinal axis of the machine tool.

[0028] The second, upper handle preferably runs substantially parallel to the virtual longitudinal axis of the machine tool. This second handle is typically grasped by a right-handed person with the right hand when using the machine tool. According to the invention, it is preferred that the upper handle protrudes beyond the main body of the machine tool in a rear spatial direction, so that the main body and its internal components are well protected against falling and the machine tool landing on the rear of the device. The protrusion of the second handle beyond the rear of the main body of the machine tool preferably forms a projection. According to the invention, the term "projection" preferably describes the distance from a substantially vertically extending rear wall of the main body of the machine tool to a maximum distant point on a rear part of the upper handle. This distance orThe overhang is, for example, in a range of 1 to 12 cm, preferably 3 to 9 cm and particularly preferably approximately 6 cm.

[0029] According to the invention, it is preferred that the second handle is arranged above the electronics of the machine tool and comprises actuating switches for the machine tool on its upper side and / or underside. Because the second handle of the machine tool is usually grasped by the right hand of a user, the machine tool can be particularly well operated by providing the actuating switches on the upper side and / or underside of the second handle. Due to the preferred spatial proximity between the electronics of the machine tool and the at least one actuating switch in the second handle, transmission paths for control commands can be significantly shortened and the cabling and interconnection effort within the device can be simplified or reduced.According to the invention, it is preferred that the region of the second handle that has the at least one actuating switch be referred to as the central part of the upper handle. A longitudinal axis running centrally through the central part preferably does not run parallel to a surface on which the power tool can be placed, but rather is inclined by an angle of inclination of 10 to 30 degrees, preferably by an angle of inclination of 15 to 25 degrees, and most preferably by an angle of inclination of approximately 20 degrees. This inclination can significantly improve the ergonomics of the upper handle. The central part of the upper handle is substantially perpendicular to a rear part of the upper handle. Thus, this rear part of the upper handle is also inclined by the aforementioned angle of inclination of approximately 20 degrees with respect to a substantially vertical rear wall of the main body of the power tool.Tests have shown that the inclination of the second handle of the machine tool significantly improves the ergonomics of the machine tool. It may also be preferred within the meaning of the invention for the machine tool to have a rear handle.

[0030] It is preferred within the meaning of the invention that the at least one rechargeable battery comprises contacts with which it can be plugged into the machine tool. For this purpose, the machine tool comprises a corresponding connection arrangement with which the contacts of the at least one rechargeable battery can interact. The machine tool preferably comprises an interface with which the energy supply to the device or the energy output of the rechargeable battery can be controlled. It can be preferred within the meaning of the invention that the machine tool comprises an interface that controls the energy output of the rechargeable battery. If the machine tool comprises two rechargeable batteries, the machine tool can comprise two interfaces, i.e. one interface for each rechargeable battery. It is particularly preferred within the meaning of the invention that the rechargeable batteries can be connected to the electronics of the machine tool via an interface and contacts.

[0031] According to the invention, it is preferred that the at least one rechargeable battery or its receiving space in the proposed machine tool be arranged in the housing of the main body of the machine tool, wherein the housing forms a sealed space that is tightly sealed, particularly against dust and / or moisture. This effectively prevents unwanted dust from entering the rechargeable battery receiving space.

[0032] According to the invention, it is preferred that the machine tool has damping means to decouple the handles and the protective frame from vibrations that occur during operation of the machine tool. The damping means preferably comprise springs, with three springs being provided in particular, to achieve a decoupling of the handles and the protective frame from the vibrations that occur during operation of the machine tool.

[0033] In the sense of the invention, it is preferred that by aligning the motor, the working axis of which runs substantially parallel to a central axis of the machine tool, a particularly well-balanced machine tool can be provided which, despite its weight, can be easily guided and has good ergonomics when cutting.

[0034] In one embodiment, the invention relates to a battery-powered cut-off grinder with two batteries, accessible, for example, from above. The remaining components of the cut-off grinder are preferably installed around the batteries in such a way that a simple design of the machine tool is possible and the device offers good ergonomics. It is preferred within the meaning of the invention that the cutting disc of the proposed cut-off grinder has a blade diameter of greater than 230 mm.

[0035] Further advantages are evident from the following figure description.

[0036] In the figures, identical and similar components are numbered with the same reference numerals. They show: Fig. 1Side and rear view of a preferred embodiment of the proposed machine tool not part of the invention Fig. 2Side and oblique front view of a preferred embodiment of the proposed machine tool not part of the invention Fig. 3Side view of a preferred embodiment of the proposed machine tool without accumulators not part of the invention Fig. 4Schematic top view of a preferred embodiment of the proposed machine tool according to the invention Fig. 5Schematic side view of a preferred embodiment of the proposed machine tool Examples of implementation and description of figures:

[0037] Figure 1shows in the left half of the picture a side view of a preferred embodiment of the proposed machine tool 1 and in the right half of the picture a rear view of a preferred embodiment of the proposed machine tool 1. The front area of the machine tool 1 is formed by a tool 25, which in the case of the Fig. 1 The cutting-off wheel 1 shown in FIG. 1 is formed by a cutting wheel 25. The tool 25 can be surrounded by a blade guard, which can include a water supply and a handle. The rear area of the machine tool 1 is formed by a main body 4, which has a housing 6. The main body 4 of the machine tool 1 is surrounded by a protective frame 14. The Fig. 1 The machine tool shown, for example, has two accumulators 2, 3 as an energy source.

[0038] In addition, the machine tool comprises a front, circumferential handle 12 and an upper, second handle 13. Actuating switches 21, with which the machine tool 1 can be operated, can be arranged on the upper, second handle 13. These actuating switches 21 can be arranged in particular on the underside of the second handle 13. The machine tool 1 can furthermore have a switch-on lock 30, which can preferably be arranged on the upper side of the second handle 13. It is preferred within the meaning of the invention that the actuating switch 21 can only be actuated when the switch-on lock 30 permits this. It is preferred within the meaning of the invention that the underside of the second handle 13 faces or is opposite the upper side 10 of the housing 6 of the machine tool 1.

[0039] To protect sensitive components, the machine tool 1 can include ribs 11 against rain and splash water. According to the invention, the ribs 11 are preferably designed to guide a water flow so that dirty and / or rainwater does not reach the area of sensitive components of the machine tool 1. Sensitive areas of the machine tool 1 include, for example, the accumulators 2, 3 or their interfaces 18 or contacts 19 or their charge level indicator 31.

[0040] The motor 5 is arranged in a front region of the main body 4 of the machine tool 1. A protective plate 28 can be arranged on a front side 27 of the housing 6 of the machine tool 1, which protects the main body 4 and its internal components from dust, flying sparks, dirty or splashed water, or metal chips. A protective plate 28 can be arranged on a front side 27 of the housing 6 of the machine tool 1, which protects the main body 4 and its internal components from dust, flying sparks, dirty or splashed water, or metal chips.

[0041] The front side 27 of the housing 6 of the machine tool 1, as well as the protective plate 28, which is present on the front side 27 of the housing 6 of the machine tool 1, is in particular also in Fig. 2It is preferred in the sense of the invention that the protective plate 28 is attached to the front, circumferential handle 12 or forms a component of this front handle 12. The trajectories of possible objects, from which the protective plate 28 is intended to protect the hand-held power tool 1, are also shown in Fig. 2 (see arrows bottom left). Preferably, the protective plate 28 is made of metal or another fire-resistant material in order to be able to protect the machine tool 1, in particular, from hot sparks. It is preferred in the sense of the invention that the front side 27 of the housing 6 of the machine tool 1 faces or is arranged opposite the tool 25 of the machine tool 1. In particular, Fig. 2 in the left half of the picture a side view of a preferred embodiment of the proposed machine tool 1 and in the right half of the picture an oblique front view of the proposed machine tool 1.

[0042] The interface 18 and the contacts 19 for the accumulators 2, 3 are also in Fig. 3which shows a side view of a preferred embodiment of the proposed machine tool 1 without accumulators 2, 3. The electronics 20 of the machine tool 1 are arranged above the interface 18 and above the contacts 19 for the accumulators 2, 3, wherein the electronics 20 are located in spatial proximity to the actuating switches 21 on the second handle 13 of the machine tool 1 in order to keep transmission and communication paths short. It is also provided that the electronics 20 are located in spatial proximity to the accumulators 2, 3; this also serves to shorten the transmission and communication paths. The electronics 20 is preferably held by a central carrier 32, which is preferably also referred to as a carrier unit 32.It is preferred within the meaning of the invention that the support unit 32 is fixedly connected to the motor housing 22 and is configured to accommodate the electronics 20, the interfaces 18, the contacts 19, the accumulators 2, 3, and / or the damping elements 15 of the machine tool 1. It is particularly preferred within the meaning of the invention that the support 32 forms an internal structure for the main body 4 of the machine tool 1, which can support or accommodate the aforementioned components of the machine tool 1.

[0043] Furthermore, Fig. 3, not part of the invention, the motor 5 of the machine tool 1 is shown, which is arranged in a front region of the main body 4 of the machine tool 1. The motor 5 has an axis which is substantially orthogonal to a longitudinal axis 29 of the machine tool 1. In other words, the axis of the motor 5 of the machine tool 1 is preferably perpendicular to the longitudinal axis 29 of the machine tool 1. This arrangement is described in the sense of the invention with the formulation that the motor 5 of the machine tool 1 is aligned transversely to the accumulators 2, 3 of the machine tool 1. The motor axis projects into Fig. 3practically out of the image plane. The motor 5 is surrounded by a motor housing 22. The movement generated by the motor 5 of the machine tool 1 is transmitted via drive means to the tool 25 of the machine tool 1. A gear 23 of the machine tool is arranged between the drive means and the motor 5, which is preferably also arranged within the motor housing 22. The cutting disc 25 of the cut-off grinder 1 is connected to the main body 4 of the cut-off grinder 1 via a cutting arm 24.

[0044] Fig. 4 shows a schematic plan view of a preferred embodiment of the proposed machine tool according to the invention.

[0045] Shown is the cutting axis S, which divides the machine tool 1, wherein the side of the machine tool 1 comprising the motor 5 is referred to as the "motor side" of the machine tool 1 (upper half of the image), while the side of the machine tool 1 comprising the at least one rechargeable battery 2 is referred to as the "battery or rechargeable battery side" of the machine tool 1 (lower half of the image). The motor 5 and the rechargeable batteries 2, 3 are housed in a main body 4 of the machine tool 1, wherein the main body 4 can be separated from the environment by a housing 6 of the machine tool 1. A rotational movement of the motor 5 can be transmitted to the tool 25 of the machine tool 1 via a gear 23. The cutting axis S runs essentially parallel to a plane spanned by the tool 25 of the machine tool 1. According to the invention, the cutting axis S lies in this tool plane.The gear 23 of the machine tool 1 is preferably arranged on the motor side of the machine tool 1, so that the gear 23 is advantageously located in spatial proximity to the motor 5 of the machine tool 1.

[0046] The motor 5 of the machine tool 1 is arranged substantially parallel to a cutting axis S of the machine tool 1 and is located substantially on a first side of the cutting axis S.

[0047] The cutting axis S is substantially perpendicular to a rotational axis of the tool 25 of the machine tool 1, wherein the rotational axis of the tool 25 is in Fig. 4 represented by a vertical dashed line.

[0048] A further, third handle 33, preferably referred to as a "rear handle," can be arranged in a rear area of the machine tool 1. The batteries 2, 3 can, for example, be inserted into the main body 4 of the machine tool 1 from behind. However, other insertion directions for the batteries 2, 3 are also conceivable.

[0049] Fig. 5 shows a schematic side view of a preferred embodiment of the proposed machine tool 1. Shown in particular is the battery or rechargeable battery side of the machine tool 1. The tool 25 of the machine tool 1 is shown in a front area, while the rear handle 33 of the machine tool 1 is shown in a rear area. The main body 4 of the machine tool 1 is arranged centrally and is preferably surrounded by a housing 6. The at least one rechargeable battery 2 of the machine tool 1 can be accommodated in the main body 4 of the machine tool 1. List of reference symbols

[0050] 1 Machine tool 2 First battery 3 Second battery 4 Main body 5 Motor 6 Housing 7 First receiving space 8 Second receiving space 9 Rear of the main body 10 Top of the housing 11 Ribs 12 First, circumferential handle 13 Second, upper handle 14 Protective frame 15 Damping means 16 L-shaped structure 17 Overhang 18 Interface between batteries and machine tool 19 Contacts between batteries and machine tool 20 Machine tool electronics 21 Operating switch 22 Motor housing 23 Gearbox 24 Cutting arm 25 Tool or cutting disc 26 Drive means 27 Front of the housing 28 Protective plate 29 Longitudinal axis of the machine tool 30 Switch-on lock 31 Charge level indicator 32 Carrier unit 33 Third, rear handle Angle of inclination between motor and cutting axis BNclination of the surface of the main body of the machine tool SCutting axis MAxis of the motor

Claims

1. Power tool (1) comprising at least one rechargeable battery (2), as power source, and a motor (5), wherein the power tool (1) comprises a tool (25) which is disc-shaped, characterized in that the motor (5) comprises a motor axis M, wherein the motor axis M of the power tool (1) is formed substantially parallel to a cutting axis S of the power tool (1), wherein the motor (5) is substantially present on a first side of the cutting axis S, while the at least one rechargeable battery (2) is arranged substantially on a second side of the cutting axis S, wherein the cutting axis S lies in a plane which is defined by the tool (25) of the power tool (1) and wherein the cutting axis S runs substantially centrally through the power tool (1).

2. Power tool (1) according to Claim 1, characterized in that the power tool (1) has a gearbox (23), wherein the gearbox (23) is arranged on that side of the cutting axis S of the power tool (1) on which the motor (5) is also arranged.

3. Power tool (1) according to Claim 1 or 2, characterized in that the gearbox (23) of the power tool (1) is not in the form of a belt drive, but rather is positively locking.