Machine tool with parallel output and motor axes

Abstract

The invention relates to a machine tool comprising a tool which can be driven by a shaft device and a motor, wherein the position of the shaft device is defined by a shaft axis (A1) and the position of the motor is defined by a motor axis (A2). The machine tool can be connected to at least one exchangeable energy supply device in order to be supplied with energy, and the shaft axis (A1) is substantially parallel or collinear to the motor axis (A2).

Description

[0001] MACHINE TOOL WITH PARALLEL OUTPUT AND MOTOR AXES

[0002] The present invention relates to a machine tool with a tool that can be driven by a shaft device and a motor, wherein a position of the shaft device is defined by a shaft axis A1 and a position of the motor is defined by a motor axis A2, wherein the machine tool is connectable to at least one exchangeable energy supply device for energy supply and the shaft axis A1 runs substantially parallel or collinear to the motor axis A2.

[0003] Background of the invention:

[0004] In the field of machine tools, drilling machines, especially core drilling machines, are known, for example, with which essentially cylindrical drill cores can be cut out of a subsurface. Core drilling machines, for example, have drill bits as tools that can be driven by the core drilling machine to perform a rotary motion.

[0005] To date, the state of the art has primarily involved mains-powered core drilling rigs that draw their power from a power grid. This could be, for example, a public power grid or a construction site power grid. A disadvantage of existing mains-powered core drilling rigs, however, is that they are often inconvenient to handle due to the cabling. Furthermore, the power cable is often "in the way," so that in some cases it even poses a safety risk. A further safety risk can arise from the interaction of electricity with cooling or flushing water used during core drilling. Furthermore, the operation of such mains-powered core drilling rigs is only possible in areas of a construction site where electrical power is available in the form of a mains connection. A further disadvantage of power cables is that they are frequently damaged.For example, they can become jammed or damaged during drilling. This can pose a safety risk to the machine tool itself or to the user.

[0006] State-of-the-art drilling rigs can be either held by a user ("handheld") or attached to a drill stand ("stand-mounted"). There are rigs designed for both types of use (universal rigs) and rigs that can only be operated handheld or stand-mounted. Drills that can at least also be operated stand-mounted often have an interface for connecting the rig to a drill stand.

[0007] This drill stand interface is often located on the underside of mains-powered drilling rigs, as is known from the state of the art. However, this arrangement of the drill stand interface on the underside of the drilling rig can make handling the machine tool more difficult, especially if the drilling rig is designed as a battery-powered drilling rig. The positioning of the battery may require a greater distance between the drill stand interface and the drill stand. The greater distance between the drill stand interface and the drill stand can disadvantageously reduce the rigidity of the drill stand-drill system or result in existing accessories no longer being usable.

[0008] Furthermore, the professional community would welcome it if the user could be guided in the use of the machine tool or receive instructions to enable optimal operation of the machine tool.

[0009] 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 can be used particularly flexibly, conveniently, and safely on a construction site. The machine tool should be easy and straightforward to use in all areas of a construction site. Furthermore, experts would welcome a particularly compact and handy machine tool, so that even prolonged work with the machine tool is perceived as minimally stressful for the user.

[0010] The problem is solved by the subject matter of the independent claims. Advantageous embodiments of the subject matter of the independent claims can be found in the dependent claims.

[0011] Description of the invention:

[0012] According to the invention, a machine tool with a tool is provided. The tool can be driven by a shaft device and a motor, wherein a position of the shaft device is defined by a shaft axis A1 and a position of the motor is defined by a motor axis A2. The machine tool can be connected to at least one interchangeable energy supply device for power supply, wherein the shaft axis A1 runs substantially parallel or collinear to the motor axis A2. Preferably, the shaft device with the shaft axis A1 can be referred to as the "output shaft" and the shaft device with the motor axis A2 can be referred to as the motor shaft. As a result, the machine tool can preferably be referred to as a "machine tool with substantially parallel output and motor axes". The motor axis A2 preferably defines the position or arrangement of the motor within the machine tool.The replaceable energy supply device can, in particular, be a rechargeable battery or an accumulator ("accumulator"), whereby the machine tool draws its energy from the at least one replaceable energy supply device. For example, the machine tool can have one or two replaceable energy supply devices. The energy supply devices are replaceable in the sense that an "empty" battery can be removed from the machine tool to be charged - for example, in a charger. Instead of the "empty" battery, a "fresh", i.e., fully charged battery can be inserted into the machine tool to ensure the energy supply to the machine tool. By supplying the machine tool with electrical energy via an replaceable energy supply device, several advantages are achieved.Firstly, the machine tool can be used particularly flexibly, as its operation is not dependent on a power connection. Furthermore, safety during operation is significantly increased, as there are no power cables that could pose a tripping hazard. Furthermore, potential hazards, such as damaged cables that come into contact with cooling or rinsing water, are eliminated by eliminating the need for a power cable on the machine tool with the replaceable power supply unit.

[0013] According to the invention, it is preferred that the machine tool has a device for receiving the at least one replaceable power supply device. The device for receiving the at least one replaceable power supply device preferably represents a receiving device or interface, which, according to the invention, can also be referred to as a "power interface." The power interface is preferably located inside the machine tool, so it is not shown in the figures.

[0014] It may also be preferred within the meaning of the invention for the replaceable energy supply device to be designed as a mains adapter. The term "mains adapter" within the meaning of the invention is understood as a device that enables the power supply of the inherently battery-operated machine tool via a power grid. The mains adapter can be shaped similarly to a battery and fit into the power interface of the machine tool. In other words, the power interface of the machine tool can be configured to accommodate rechargeable batteries and / or mains adapters. The mains adapter also has a power cable for connecting the mains adapter to a power grid. If it becomes apparent during operation of the machine tool that the battery of the machine tool is "empty", the battery can be removed from the machine tool and replaced with the mains adapter.The mains adapter advantageously ensures the power supply to the machine tool. The mains adapter is particularly available as an "emergency reserve" or "fallback option" if the power supply of the machine tool's battery is depleted unexpectedly quickly, or if the battery is defective or otherwise unusable. The mains adapter can also be used, for example, when a large number of core drillings are to be carried out for which the power of one or more batteries is insufficient. The mains adapter can therefore help extend the range of the machine tool, while a power supply device designed, for example, as a battery can help provide a particularly flexible machine tool.

[0015] According to the invention, it is preferred that the machine tool comprises a first housing and a second housing, the first housing being designed to at least partially enclose the motor and the second housing being designed to at least partially enclose the replaceable energy supply device. Due to the two-part design of the housing, the components of the machine tool contained in the individual housings, such as the energy supply device or motor, can be particularly well protected against damage, dust or moisture. The first housing is preferably also referred to as the “motor housing”, while the second housing can be referred to as the “battery housing”. By providing the two housings, particularly good protection of the individual components of the machine tool can be enabled.This can advantageously extend the service life of the machine tool or the maintenance interval between two maintenance operations. According to the invention, it is preferred that the device for accommodating the at least one replaceable power supply device is arranged in the second housing of the machine tool. In other words, the power interface of the machine tool can be located in the battery housing.

[0016] The position of relevant components of the machine tool can be defined or described by imaginary axes. For example, the position of the motor within the machine tool can be described by a motor axis A2. Preferably, the motor of the machine tool can comprise a motor shaft, wherein the motor axis A2 runs through the motor shaft. The motor can preferably be designed as an electric motor and generate a rotary movement that can be transmitted to its tool via the motor shaft and / or the shaft device of the machine tool. The position of the shaft device or the output shaft of the machine tool is described by a shaft axis A1. According to the invention, it is preferred that the shaft axis A1 and / or the motor axis A2 is / are arranged in a forward-to-backward direction of the machine tool. As a result, the shaft axis A1 and the motor axis A2 run essentially parallel or collinear to one another.Preferably, the position of the tool of the machine tool can also be described with the help of the shaft axis A1, since the tool can be connected to the shaft device in order to be driven. The arrangement of the motor, the shaft device and the tool of the machine tool in relation to one another makes it possible to provide a particularly compact and easy-to-handle machine tool. In particular, the machine tool can have a short design, which in particular enables good attachment to a drill stand. The wording "essentially parallel or collinear" is not an unclear term for the person skilled in the art, because the person skilled in the art knows that essentially parallel or collinear axes can exhibit slight deviations from mathematically exact parallelism or collinearity, which can occur, for example, due to manufacturing reasons. Such deviations can, for example, be in a range of + / - 5°.

[0017] For example, a proposed machine tool may produce a power of more than 1 kW.

[0018] According to the invention, it is preferred that the power supply device can be inserted into the machine tool along an insertion direction E. For example, the machine tool can have a cavity into which the power supply device can be inserted. An interface can be provided on the top side of the power supply device, via which the power supply device can be connected to the power interface of the machine tool. Of course, the interface for connecting the power supply device to the power interface of the machine tool can also be arranged on a side surface, a rear side, or a front side of the power supply device.

[0019] For example, the insertion direction E can be oriented substantially parallel to the shaft axis A1 and / or the motor axis A2. In this preferred embodiment of the invention, the insertion direction E—together with the shaft axis A1 and / or the motor axis A2—can be arranged in the forward-to-backward direction of the machine tool. In particular, the machine tool can have an opening on its rear side, wherein the energy supply device can be pushed through the opening into a cavity of the machine tool. In this case, the energy supply device is pushed in the spatial direction "forward V", so that the insertion direction E in this case preferably coincides with the orientation of the spatial direction "forward V". Examples of an energy supply device that can be inserted into the machine tool from behind are shown in Figures 3, 4 and 6.

[0020] In another embodiment of the invention, the insertion direction E can be oriented substantially perpendicular to the shaft axis A1 and / or the motor axis A2. In this embodiment of the invention, the energy supply device can preferably be inserted transversely into the machine tool. In the context of the invention, this preferably means that the insertion direction E can run from a right-hand side of the machine tool to a left-hand side of the machine tool, or vice versa. In this embodiment of the invention, the machine tool can have an opening on its right-hand or left-hand side into which the energy supply device can be inserted. By inserting the energy supply device transversely into the machine tool, a particularly short, compact and therefore particularly handy machine tool can be provided.Examples in which the energy supply device can be inserted transversely into the machine tool are shown in Figures 7 to 9.

[0021] According to the invention, it is preferred that the machine tool has at least one sensor for detecting the connection state of the machine tool to a drill stand. Preferably, the machine tool is configured with the aid of the sensor to detect whether the machine tool is mounted on a drill stand. For example, when the machine tool is mounted on the drill stand, the sensor can send an assembly signal to the machine tool. Alternatively or additionally, the sensor can send a disassembly signal to the machine tool when the machine tool is disassembled from the drill stand. By providing the sensor, direct drill stand detection can advantageously be enabled, in which it is determined, preferably without detours or auxiliary variables, whether the machine tool is arranged on a drill stand or not.The states "machine tool is mounted on the drill stand" and "machine tool is not mounted on the drill stand" are preferably referred to as connection states of the machine tool within the meaning of the invention. The sensor can preferably be a mechanical switch, a proximity sensor and / or an optical sensor, such as a light sensor, without being limited thereto. It is very particularly preferred within the meaning of the invention that the sensor is configured to preferably automatically send a first or assembly signal when the machine tool is mounted and, likewise preferably automatically, a second or disassembly signal when it is dismounted. The signals can be sent, for example, to the machine tool or a control device of the machine tool, wherein the signals from the machine tool can advantageously be used to set an operating mode of the machine tool.In other words, an operating mode of the machine tool can be set depending on a connection state of the machine tool. For example, a drill stand operating mode can be provided in which the machine tool can operate with higher operating forces than in a hand-held operating mode. If the machine tool is designed as a drilling device, in particular as a core drilling device, the drilling or contact forces with which the tool of the machine tool, preferably a core bit, is pressed onto the substrate to be machined can be significantly higher in the drill stand operating mode than in the hand-held operating mode. For example, drive parameters of the machine tool can be selected or set differently depending on the preferably automatically set operating mode of the machine tool.Drive parameters can be, for example, speeds of the tool of the machine tool or the motor of the machine tool, torques or other operating parameters that influence the operation of the machine tool. In another exemplary embodiment of the invention, a motor characteristic curve can be selected or set depending on the connection state of the machine tool. The motor characteristic curve can preferably also be set or selected depending on a diameter of the tool used or on a diameter of the hole to be drilled. In other words, the motor characteristic curve of the machine tool can be set depending on a connection state of the machine tool and / or depending on a diameter of the tool and / or the hole to be drilled. The motor characteristic curve preferably indicates a relationship between a speed of the motor of the machine tool and a torque.

[0022] Advantageously, the sensor can only be influenced with difficulty or with the aid of aids in order to bypass direct drill stand detection or to prevent signal transmission. This makes it virtually impossible to manipulate the operation of the machine tool. Furthermore, a display on a display device, such as a screen, can vary depending on the operating mode. The term "operating mode" refers, for example, to whether a drill stand is detected or not. In this way, different recommendations can be issued to the user of the machine tool. These recommendations can, for example, relate to the contact force with which the machine tool is pressed onto the surface to be machined. The recommendation for an application-optimized contact force can vary in the context of the present invention, depending on whether the machine tool is arranged on a drill stand or is operated manually.

[0023] The provision of such a sensor is particularly advantageous if the machine tool is a universally applicable machine tool that can be operated, for example, both in column mode and hand-held.

[0024] In a further embodiment of the invention, the start-up or run-up characteristics of the machine tool's motor can be selected or adjusted depending on the machine tool's connection state. Within the context of the invention, this preferably means that the start-up of the machine tool after it has been switched on can be varied depending on the set or automatically detected connection state of the machine tool. For example, the machine tool can start up more smoothly in the hand-held connection state than in the drill stand connection state.

[0025] If the machine tool is mounted on a drill stand, the drilling feed can be controlled by an automatic feed device. It is preferred according to the invention that different operating parameters of the machine tool can be set depending on whether such an automatic feed device is used or not. It may also be preferred according to the invention that the feed of the machine tool be controlled by a handwheel.

[0026] The machine tool can, for example, also comprise a display device on which information for the user of the machine tool can be displayed. According to the invention, it is preferred that different information can be displayed on the display device depending on which operating mode is currently set on the machine tool. In other words, the information displayed on the display device can be selected depending on the connection state of the machine tool. For example, in the respective operating mode of the machine tool, information can be displayed on the display device that instructs the user to press the machine tool onto the surface with an optimal contact force.Within the meaning of the invention, it may also be preferred that different drilling performance information be displayed depending on whether the machine tool is operated in drill stand mode or in handheld mode. In addition to information relating to the application of the machine tool, information about the charge level of the replaceable power supply device, such as a battery, of the machine tool can also be displayed on the display device.

[0027] According to the invention, it is preferred that the machine tool has a drill stand interface for connecting the machine tool to a drill stand. This advantageously ensures a fixed, secure, and particularly stable attachment of the machine tool to the drill stand.

[0028] In one embodiment of the invention, the drill stand interface can be arranged on an underside of the machine tool. An overview of the spatial directions "up", "down", "front", and "back" is shown in the figures. In this preferred embodiment of the invention, the underside of the machine tool represents the side of the machine tool facing the drill stand. Advantageously, this enables an improved connection of the preferably battery-operated machine tool to the drill stand. Furthermore, this makes it possible to provide a battery-operated machine tool that is preferably purely stand-guided. This makes it possible, in particular, to provide a particularly compact and handy machine tool that is optimized for drill stand operation.In particular, by providing the drill stand interface on the underside of the machine tool, a particularly short distance between the shaft device or the tool of the machine tool and the drill stand can be achieved, which has proven advantageous for the operation of the preferably stand-guided, battery-operated machine tool. Furthermore, the arrangement of the drill stand interface on the underside of the machine tool enables good accessibility to the individual components of the machine tool, as well as good visibility of the display device.

[0029] It is preferred within the meaning of the invention that the at least one replaceable energy supply device is arranged in an extension of the shaft axis A1 and / or motor axis A2. In the embodiment of the invention in which the drill stand interface is arranged on the underside of the machine tool, it is preferred within the meaning of the invention that the first housing and the second housing are arranged at approximately the same height and / or substantially next to one another. For example, the second housing can be arranged in a rear region of the machine tool, while a holding device for the tool of the machine tool is arranged in a front region of the machine tool ("tool holder"). The first housing, in which the motor of the machine tool is at least partially arranged, can preferably be arranged between the tool holder and the second housing.The replaceable power supply device is preferably located in a rear region of the machine tool in the second housing of the machine tool. The battery or the mains adapter can be inserted or removed via the rear of the machine tool, so that the provision of the drill stand interface on the underside of the machine tool can significantly facilitate the insertion and removal of the replaceable power supply device. The second housing of the machine tool can comprise protective elements designed to protect the replaceable power supply device when the at least one replaceable power supply device is arranged in an extension of the shaft axis A1 and / or motor axis A2. As a result, the invention can provide particularly effective protection for the power supply device.

[0030] Within the meaning of the invention, it may also be preferred for the battery or power adapter to be inserted from the side into a cavity or receiving space of the machine tool. In this embodiment of the invention, too, the provision of the drill stand interface on the underside of the machine tool can significantly facilitate the connection of the power supply device to the machine tool.

[0031] An advantage of providing the drill stand interface on the underside of the machine tool is that this mounting direction does not increase the system width, thus improving accessibility to the corners of the power supply device.

[0032] In a further exemplary embodiment of the invention, the drill stand interface can be arranged on a top side of the machine tool. The drill stand interface can preferably also be arranged on a first side wall and / or on a second side wall of the machine tool. For the purposes of the invention, this preferably means that the drill stand interface is arranged laterally on the machine tool. For the purposes of the invention, it is preferred that the machine tool can be used in a stand-guided and / or hand-held manner. Such machine tools that can be operated in both a stand-guided and hand-held manner are preferably referred to as "universal machine tools" or "universally applicable machine tools" for the purposes of the invention.According to the invention, it is preferred that the universal power tool has a first handle and / or a second handle, wherein the second handle can be designed as a side handle. The first handle can be designed, for example, as a D-shaped handle. According to the invention, it is preferred that the side handle (second handle) of the power tool is rotatable. For example, the side handle of the power tool can be rotated by up to 360°. This can significantly improve the operability of the power tool, for example, for left-handed users.

[0033] In a further preferred embodiment of the invention, the machine tool can have a handle other than the first handle, which is designed, for example, as a T-handle and can preferably be referred to as a third handle within the meaning of the invention. Such a T-handle can preferably also be referred to as a “pistol grip” within the meaning of the invention. A machine tool can, for example, have a second handle, which is designed as a rotatable side handle, as well as a T-handle. The T-handle can preferably be located below the first housing and / or the second housing. For example, the T-handle can also be located below a transition region between the first housing and the second housing region of the machine tool. Such a machine tool is shown, for example, in Figures 7 and 8.If the housing of the power tool is constructed in one piece, the third handle, which is preferably designed as a T-handle, can be arranged below this one-piece housing. According to the invention, it is preferred that the third handle is arranged at least partially below the power supply device. This allows the third handle to be advantageously located at the center of gravity or in close proximity to the center of gravity of the power tool when the power tool is being used to work on a wall or masonry (horizontal operation of the power tool). This enables particularly comfortable and ergonomically advantageous working with the power tool.

[0034] The provision of the third handle advantageously enables a particularly short design of the machine tool, which can also have a particularly low height. These dimensions make it possible to create a machine tool that is particularly ergonomically comfortable to hold.

[0035] Preferably, the third handle extends along an upward-downward direction of the machine tool. Preferably, a virtual axis can be laid through a center of the third handle, wherein this axis A3 through the third handle encloses an angle alpha with the shaft axis A1 and / or the motor axis A2, wherein the angle alpha lies in a range of 60 to 100°, preferably in a range of 70 to 90°, and most preferably 80°. It is preferred within the meaning of the invention that the energy supply device lies at least partially in this opening angle alpha between the third axis A3 on the one side and the shaft axis A1 and / or the motor axis A2 on the other side.Since the virtual axis A3, which preferably runs through the third handle, encloses two angles with the shaft axis A1 and / or the motor axis A2, which each add up to an angle of 180°, the angle alpha is defined in the sense of the invention as the smaller of the two angles. The larger opposite angle (180° - alpha) preferably at least partially encloses the motor of the machine tool. While the shaft axis A1 and the motor axis A2 run essentially horizontally when a wall or masonry is being machined with the machine tool, the third axis A3 in this case runs slightly inclined relative to the wall. If the third axis A3 is notionally extended beyond the machine tool, the third axis A3 preferably encloses an angle with the surface to be machined, the absolute value of this angle preferably corresponding to the angle alpha.Preferably, the shaft axis A1 and the motor axis A2 extend substantially along a working direction of the machine tool, while the third axis A3 extends inclined with respect to the working direction of the machine tool or encloses the angle alpha with the working direction.

[0036] The machine tool can comprise a display device, which is preferably arranged on a rear and / or top side of the machine tool. The display device represents a human-machine interface, which in the sense of the invention can preferably also be referred to as a human-machine interface (HMI). The display device can comprise a display or a small monitor so that information can be displayed for the user of the machine tool. The display device can preferably also be designed as a touch-sensitive touchscreen. In addition, operating elements, such as buttons or switches, can be arranged in spatial proximity to the display device.

[0037] According to the invention, it is particularly preferred that the display device is arranged at an incline. For this purpose, an inclined plane can be formed between the top and the back of the machine tool, into which the display device can be embedded. According to the invention, the inclined plane can preferably also be referred to as the “display device plane,” wherein the display device plane forms an angle beta with the shaft axis A1 and / or the motor axis A2. The location and position of angle beta is shown in Figure 9. According to the invention, it is preferred that the angle beta lies in a range between 20 and 70°. According to the invention, the unit “°” preferably corresponds to the angular unit “degree.” According to the invention, it is preferred that an angle beta between the inclined display device plane and the output axis of the machine tool lies in a range between 20 and 70°.The term "output axis" is used synonymously for the shaft axis A1 of the machine tool in the context of the invention. With the inclined or obliquely arranged display device, the invention deliberately departs from the prior art. In conventional machine tools, as known from the prior art, such display devices are often located in a flat plane on the top and / or rear of the machine tool. This means that such conventionally arranged display devices run essentially parallel or vertically along the rear and / or top of the machine tool. The display device is often oriented essentially perpendicular or horizontally to an output axis of the machine tool. The inclined or oblique arrangement of the display device advantageously enables a particularly short overall length of the machine tool and a compact design.Furthermore, the height of the machine tool can be kept low, improving its ergonomics and handling.

[0038] Tests have shown that the readability of the display device can be significantly improved if it is arranged at an angle or tilt rather than vertically or horizontally. This is because many displays and monitors are dependent on the viewing angle, meaning that the displays and monitors cannot be read equally well from every direction and from every position. By arranging the display device at an angle or tilt on the inclined plane, which preferably connects the top of the machine tool to its rear, reading the information from the display device can be made considerably easier or less strenuous for the user. This is especially true in adverse weather conditions, such as strong sunshine.In addition, the preferred oblique or inclined arrangement of the display device means that the machine tool can be used equally well horizontally (for example, when working on a wall or a wall, working direction: "forwards") or vertically (for example, when working on a floor, working direction: "downwards"), because in both working directions, the inclined or inclined arrangement of the display device ensures optimal readability of the display device by the user.

[0039] According to the invention, it is preferred that the machine tool comprises a protective device for the energy supply device, wherein the protective device for the energy supply device can have battery protection elements. The battery protection elements can preferably be designed as protruding elements or mandrels whose height is greater than a projection of the energy supply device. The battery protection elements can grow out of the housing of the machine tool like stalagmites and have a height. The housing of the machine tool, in particular the second or battery housing, can be designed like a frame or truss, wherein the energy supply device can protrude from openings or free spaces in the housing of the machine tool.The length of these projections is preferably smaller than the height of the battery protection elements, so that the battery protection elements can thus protect the energy supply device particularly well against mechanical damage or impairment. The battery protection elements can be characterized by an inner axis, wherein these axes of the battery protection elements are essentially perpendicular to the housing of the machine tool and / or to the essentially flat side surfaces of the energy supply device. The inner axes of the battery protection elements are in particular essentially perpendicular to the shaft axis A1 and / or the motor axis A2 of the machine tool. Of course, the battery protection elements are also referred to as battery protection elements if the machine tool contains a mains adapter as the energy supply device instead of a rechargeable battery.

[0040] According to the invention, it is preferred that battery protection elements are arranged on both sides of the power supply device. For example, four battery protection elements can be provided on both the left and right sides of the power supply device, with the battery protection elements being designed in particular to protect the particularly sensitive corners and edges of the power supply device from the effects of falls or the machine tool tipping over. According to the invention, it is preferred that four battery protection elements are arranged on the left and / or right sides.

[0041] The protective device for the energy supply device or its battery protection elements are designed in particular as part of the housing of the machine tool. If the housing of the machine tool consists of several partial housings, for example a first housing for the motor and a second housing for the energy supply device, the protective device for the energy supply device and its battery protection elements can be designed as part of the first and / or the second housing. The second housing of the machine tool is preferably frame- or truss-like, so that it preferably does not form a closed housing that completely encloses the energy supply device. Rather, the second housing of the machine tool can represent an open structure with openings and free spaces so that the energy supply device can be viewed from the outside, for example.This allows material to be saved in the manufacture of the housing or the protective device for the power supply device, and a particularly lightweight machine tool can be provided. It is particularly preferred within the meaning of the invention that the protective device and its battery protection elements are formed as part of the second housing of the machine tool.

[0042] An accessory device can be provided for the proposed machine tool, which advantageously offers a way to support the body of the machine tool user when performing hand-guided work with the machine tool. The accessory device can be connected particularly easily and simply to the machine tool, the protective device for the power supply device, and / or the battery protection elements in the sense of a plug-and-play solution, so that the accessory device can be used directly for working with the machine tool. The accessory device preferably comprises a soft support surface against which the machine tool user can lean or press while working with the machine tool.In addition to the soft support surface, the accessory device comprises connecting means with which the accessory device can be connected to the machine tool, the battery protection device, and / or the battery protection elements. The connecting means can preferably be, but are not limited to, locking hooks, guide and connecting rails, or the like. In this way, the accessory device can be designed, for example, as a locking battery protection accessory device and can be connected to the machine tool or its other battery protection components using an assembly direction. For example, the locking hooks can engage with the battery protection elements, whereby the accessory device can be fastened to the machine tool or the battery protection device.

[0043] The accessory device can further comprise a body which connects the support surface to the connecting means. According to the invention, it is preferred that the body can be connected to the battery protection device. This can advantageously be done using the connecting means, which can be formed, for example, by two opposing locking hooks. The accessory device can, for example, comprise plastic or be made of plastic in order to have elastic properties within a certain range or to be elastically deformable. For example, the accessory device can be easily compressed if it is to be removed from the machine tool or the battery protection device. By compressing the accessory device, the locking hooks are released ordisengage the battery protection elements so that the accessory device can be easily removed from the machine tool or the battery protection device.

[0044] The mounting direction of the accessory device can, for example, essentially coincide with the insertion direction of the battery and / or with the shaft axis and / or the motor axis of the machine tool, i.e., be parallel or collinear. However, other mounting forms for the accessory device are also conceivable, in which the accessory device is mounted essentially perpendicular to the motor and shaft axes.

[0045] According to the invention, it is preferred that an accessory device is provided that can be connected to the power tool, the battery protection device, and / or the battery protection elements. The accessory device preferably comprises a body, a soft support surface, and connecting means, wherein the body connects the soft support surface and the connecting means to one another. When the accessory device is in use, the soft support surface faces the user of the power tool, so that the user of the power tool can support themselves on the soft support surface. Using the connecting means, the accessory device can be attached to the power tool, the battery protection device, and / or the battery protection elements. The support surface can be padded, for example, with foam or the like, so that the user's pressure is comfortably distributed over as large an area as possible.

[0046] According to the invention, it is preferred that the accessory device can be mounted on the battery protection device, with the soft support surface preferably being arranged on the side facing away from the power tool. The side of the accessory device facing away from the power tool preferably faces the user of the power tool, so that the user can support themselves on this soft support surface of the accessory device while working with the power tool. This allows the user to advantageously exert pressure on the power tool and achieve better work progress.

[0047] In addition, the accessory device can be used to extend the average working time that a user is able to work with the machine tool, particularly when this work is carried out manually, i.e. without the use of a supporting drill stand. In addition, the protection for the energy supply device can be improved in that the user no longer presses against the battery itself when using the accessory device, but rather against the soft and thus cushioning accessory device. The energy supply device preferably has a substantially cuboid body shape. In the sense of the invention, this preferably means that the energy supply device has four corners on each of the right and left sides: 1) top, front, 2) top, rear, 3) bottom, front and 4) bottom, rear. In the sense of the invention, it is preferred that the protective device for the energy supply device or its battery protection elements is designed orare arranged such that at least one of these four corners on each side of the power supply device is particularly well protected against the machine tool tipping over or falling. For this purpose, the battery protection elements can be arranged, for example, so that each battery protection element covers each corner of the power supply device. In this way, with four battery protection elements on each side of the machine tool, the four corners of the power supply device of the machine tool can be optimally protected.

[0048] In the embodiment of the invention in which the drill stand interface is arranged on a top side of the machine tool or on the side of the machine tool, the second housing of the machine tool can be offset downwards in a spatial direction in an upward-downward direction compared to the first housing. In other words, the motor of the machine tool and the energy supply device can be offset from one another in terms of height. This advantageously allows existing accessory material for carrying out drilling work to continue to be used if the drill stand interface is not arranged on the underside of the machine tool, but instead if the drill stand interface is arranged on the side of the machine tool or on the top side of the machine tool.

[0049] Furthermore, in the context of the present invention, a system comprising a drill stand and a proposed machine tool is disclosed. The terms, definitions, and technical advantages introduced for the machine tool preferably apply analogously to the system.

[0050] Further advantages emerge from the following description of the figures. The figure, the description, and the claims contain numerous features in combination. The person skilled in the art will also expediently consider the features individually and combine them into further meaningful combinations.

[0051] In the figure, identical and similar components are numbered with the same reference numerals.

[0052] They show:

[0053] Fig. 1 View of a machine tool with two adjacent housings and a drill stand interface on the underside of the machine tool

[0054] Fig. 2 Detailed view of the shaft axis A1 and the motor axis A2

[0055] Fig. 3 Side view of a machine tool with two offset housings and a rear handle

[0056] Fig. 4 Rear view of a machine tool with two offset housings and a side handle

[0057] Fig. 5 Side view of a system consisting of a machine tool and a drill stand

[0058] Fig. 6 oblique rear view of a machine tool with two offset housings, a side handle and a sensor

[0059] Fig. 7 Side view of a machine tool with a second and a third handle (side handle and T-handle)

[0060] Fig. 8 oblique rear view of a machine tool with a second and a third handle (side handle and T-handle)

[0061] Fig. 9 Side view of a machine tool with an inclined display device

[0062] Fig. 10 Rear view of a machine tool with battery protection elements

[0063] Fig. 11 View of a possible design of the machine tool with an accessory device

[0064] Fig. 12 schematic sectional view of a possible embodiment of the accessory device Fig. 13 view of a possible embodiment of the machine tool with an accessory device, wherein the accessory device is mounted substantially perpendicular to the shaft or motor axis.

[0065] Implementation examples and figure descriptions:

[0066] Figure 1 shows a machine tool 10 with a first housing 20 and a second housing 22, the two housings 20, 22 being arranged side by side. In the sense of the invention, this means that the first housing 20 and the second housing 22 are arranged essentially at the same height with respect to an upward-to-downward direction of the machine tool 10. The upward-to-downward direction, as well as a forward-to-backward direction, are illustrated in the figures with the aid of a directional cross. The upward-to-downward direction preferably runs between the spatial directions "upward O" and "downward U", while the forward-to-backward direction runs between the spatial directions "forward V" and "backward H".In other words, the upward-Zdownward direction preferably extends between a top side 100 and a bottom side 10U of the machine tool 10, while the forward-Zbackward direction extends between the tool holder 38 of the interchangeable energy supply device 18. The tool holder 38 preferably forms a front region of the machine tool 10, while the interchangeable energy supply device 18 forms the rear region of the machine tool 10. The side surfaces S1, S2 of the machine tool 10 form the lateral boundaries of the housings 20, 22 of the machine tool 10. Figures 1 and 3 particularly show the left side S1 of the tool holder 10, to which, for example, a lateral handle 36 can be attached.

[0067] The machine tool 10 shown in Figure 1 has a drill stand interface 32 on the underside 10U of the machine tool 10. In the machine tool 10 shown in Figure 1, the at least one replaceable energy supply device 18 is arranged in an extension of the motor axis A2.

[0068] The machine tool 10 shown in Figure 1 is preferably designed as a purely column-guided machine tool 10, so that the machine tool 10 preferably does not have any handles 34, 36. In other embodiments of the invention, however, a purely column-guided machine tool 10 can also have handles, wherein such handles can be provided, for example, for positioning the machine tool 10 on a drill stand 30. The drill stand interface 32 serves to fasten the machine tool 10 to a drill stand 30 (see Figure 5). The machine tool 10 shown in Figure 1 is designed as a core drilling device and has a core bit (not shown) as its tool 12. The tool 12 can be fastened to the machine tool 10 with a tool holder 38. The machine tool 10 has a motor 16, the position of which within the machine tool 10 can be described by a motor axis A2.The motor 16 has a motor shaft 24 and can generate a rotary movement, wherein the rotary movement can be transmitted to the tool 12 with the aid of a shaft device 14. The position of the shaft device 14 within the machine tool 10 can be described by a shaft axis A1. The shaft axis A1 preferably runs centrally or centrally through the shaft device 14 and the tool 12 of the machine tool 10, wherein the shaft axis A1 preferably forms the drilling axis of the machine tool 10. The motor axis A2 preferably runs centrally or centrally through the motor 16 of the machine tool 10. The motor 16 is preferably designed as an electric motor and preferably comprises a stator and a rotor (not shown).

[0069] A detailed view of the shaft axis A1 and the motor axis A2 of the machine tool 10 is shown in Figure 2.

[0070] The machine tool 10 can be connected to at least one replaceable energy supply device 18 for the purpose of supplying energy. For example, the machine tool 10 can have one battery 18 or two batteries 18 as the rechargeable energy supply device 18. Rechargeable energy supply devices are preferably also referred to as "accumulators" or "rechargeable batteries" within the meaning of the invention. The batteries 18 or rechargeable batteries 18 can be charged with a charger (not shown) if they have been discharged through the operation of the machine tool 10. As an alternative to the batteries or rechargeable batteries, the replaceable energy supply device 18 can be formed by a mains adapter. In this case, the machine tool 10 can be supplied with electrical energy using the mains adapter 18.The mains adapter 18 can be connected to a power grid, such as a public power grid or a construction site power grid, via a power cable (not shown). The replaceable energy supply device 18 can be connected to the machine tool 10 via a receiving device (not shown) for the replaceable energy supply device 18. This receiving device can preferably also be referred to as an "energy interface" within the meaning of the invention. It is preferred within the meaning of the invention that the machine tool 10 has a universal energy interface with which both batteries 18 and mains adapter 18 can be connected to the machine tool 10. The energy supply device 18 can be inserted into a cavity of the machine tool 10. The insertion preferably takes place in an insertion direction E. The machine tool 10 has a first housing 20 and a second housing 22.The first housing 20 at least partially encloses the motor 16 of the machine tool 10, while the second housing 22 is configured to at least partially enclose the replaceable energy supply device 18 of the machine tool 10, in particular when the replaceable energy supply device 18 is arranged in the machine tool 10. According to the invention, the shaft axis A1 runs substantially parallel or collinear to the motor axis A2. In the machine tool 10 shown in Figure 1, the motor 16 and the replaceable energy supply device 18 are arranged substantially at the same height with respect to an up-down direction of the machine tool 10. The motor axis A2 runs below the shaft axis A1, wherein the motor axis A2 and the shaft axis A1 run substantially parallel to one another.The shaft device 14 is preferably configured to transmit a rotary movement of the motor 16 of the machine tool 10 to the tool 12. The first housing 20 and the second housing 22 can also form housing regions of a higher-level housing (not shown), wherein the first housing region 20, which preferably corresponds to the first housing 20, is configured to protect the motor 16 of the machine tool 10, while the second housing region 22, which preferably corresponds to the second housing 22, is configured to protect the power supply unit 18 of the machine tool 10. Figures 1 to 10 particularly show a two-part housing comprising a first housing 20 and a second housing 22. However, the invention is not limited to a two-part housing 20, 22; rather, the machine tool 10 is also intended to be able to comprise one-part housings.However, such a one-piece housing may preferably comprise different functional housing areas, such as a motor housing area 20 for protecting the motor and / or a battery housing area 22 for protecting the power supply device.

[0071] The drill stand 30, partially shown in Figure 1 and in Figure 5, has a handwheel with which a drilling feed can be transmitted to the machine tool 10. The handwheel preferably represents a feed device 40, wherein the drilling feed can preferably also be generated by an automatic feed device. In the system 100 shown in Figure 5, comprising the machine tool 10 and the drill stand 30, a drilling feed is generated in a spatial direction "downward U" and transmitted to the machine tool 10. The tool holder 38 of the machine tool 10 (front area of ​​the machine tool 10) therefore points in the spatial direction "downward U", while the replaceable energy supply device 18 (rear area of ​​the machine tool 10) points in an spatial direction "upward O". The drill stand interface 32 is located on the underside 10U of the machine tool 10 in the machine tool 10 shown in Figures 1 and 5.According to the invention, it is preferred that the feed device 40 can generate a drilling feed in a spatial direction "downward U." This drilling feed is preferably directed in a forward direction V of the shaft axis A1.

[0072] Figure 3 shows a side view of a machine tool 10 with two housings 20, 22 arranged offset from one another and a rear handle 34. The wording that the first housing 20 and the second housing 22 are arranged offset from one another preferably means, in the sense of the invention, that the second housing 22 of the machine tool 10 is offset in an upward-downward direction compared to the first housing 20 in a spatial direction "downwards U". In the machine tool 10 shown in Figure 3, the replaceable energy supply device 18 and the second housing 22 are located below the first handle 34, which is preferably referred to as the rear handle 34. The motor 16 or the first housing 20 of the machine tool 10 is arranged next to and in particular in front of the first handle 34.In other words, the motor 16 and the first housing 20 are arranged obliquely offset in the spatial directions "upward O" and "forward V" relative to the replaceable power supply device 18 and the second housing 22. In this embodiment of the invention, the drill stand interface 32 is preferably arranged on a top side 10O or on the side walls S1, S2 of the machine tool 10.

[0073] In the sense of the invention, this preferably means that the drill stand interface 32 for fastening the machine tool 10 to a drill stand 30 can be arranged, for example, on the side of the machine tool 10. However, the drill stand interface 32 can also be arranged on an upper side 10O of the machine tool 10. The machine tool 10 shown in Figure 3 can be used as a stand-guided and / or hand-guided machine tool. In the sense of the invention, this preferably means that the machine tool 10 shown in Figure 3 is a universally applicable machine tool 10 which can be held in the hand by a user during operation or which can be attached to a drill stand 30 during operation. The housings 20, 22 of the machine tool 10 are shown in the figures in different contrasts or different colors or hatching.

[0074] The energy supply device 18 can be inserted into a cavity of the machine tool 10. The insertion preferably takes place in an insertion direction E. In the exemplary embodiment of the invention shown in Figure 3, the energy supply device 18 is inserted into the machine tool 10 from the rear. The insertion direction E thus runs from a rear side of the machine tool 10 in a spatial direction forwards V. In the exemplary embodiment of the invention shown in Figure 3, the insertion direction E runs essentially parallel to the shaft axis A1 and / or the motor axis A2.

[0075] Figure 4 shows a rear view of a machine tool 10 with two housings 20, 22 arranged offset from one another and a side handle 36. The side handle 36 can preferably also be referred to as a "second or front handle" within the meaning of the invention. The replaceable power supply device 18 and the second housing 22 are shown in the lower, rear area of ​​the machine tool 10, while the rear handle 34 is shown above the replaceable power supply device 18.

[0076] Figure 5 shows a side view of a system 100 comprising a machine tool 10 and a drill stand 30.

[0077] Figure 6 shows an oblique rear view of a machine tool 10 with two housings 20, 22 arranged offset from one another, a side handle 36 (almost concealed), and a sensor 28 on the opposite side of the machine tool 10. The machine tool 10 depicted in Figure 6 has a protective device 44 for the replaceable energy supply device 18, as well as a display device 42. Various operating parameters, the connection status of the machine tool 10 to a drill stand 30, motor characteristics, or performance parameters can be displayed and / or adjusted on the display device 42. The protective device 44 can surround the replaceable energy supply device 18 and be at least partially elastic in order to absorb impact forces in the event of a fall and to protect the replaceable energy supply device 18 from damage.The at least one sensor 28 is configured to detect a connection state of the machine tool 10 to a drill stand 30. Naturally, the sensor 28 can be arranged at many different locations on the machine tool 10. The sensor 28 can be integrated into the machine tool 10 or, for example, subsequently attached to the machine tool 10 as a retrofit component. Within the meaning of the invention, it is preferred that the sensor 28 be arranged in spatial proximity to the drill stand interface 32. The sensor 28 can preferably be integrated into the machine tool 10. In alternative embodiments of the invention, however, the sensor 28 can also be offered as a retrofit solution for the machine tool 10.

[0078] Figure 6 shows an oblique rear view of a machine tool 10 with two housings 20, 22 arranged offset from one another, a lateral handle 36, and a sensor 28. The sensor 28 can preferably directly detect whether a machine tool 10 is mounted on a drill stand 30. In other words, the sensor 28 can detect different connection states of the machine tool 10, in particular whether a machine tool 10 is arranged on the drill stand 30 or not. The sensor 28 can be designed as a mechanical switch, proximity sensor, and / or optical sensor. The sensor 28 can be configured to emit or send an assembly signal, preferably automatically, when the machine tool 10 is assembled. When the machine tool 10 is disassembled, the sensor 28 can be configured to emit or send a disassembly signal.For example, the signals can be output via optical output means, such as displays or LEDs. However, within the meaning of the invention, it can also be preferred for the signals to be processed using information technology within the machine tool 10 and / or used to control, display, and / or adjust operating parameters. Advantageously, operating parameters or motor characteristics of the machine tool 10 can be set or changed depending on a connection state of the machine tool 10 to a drill stand 30. This setting, adjustment, or change preferably takes place automatically. For example, the machine tool 10 can be controlled in a drill stand operating mode when the machine tool 10 is arranged on a drill stand 30 and this is detected by the sensor 28.Furthermore, the machine tool 10 can be controlled in a manual operating mode if the machine tool 10 is held in the hand by a user during operation and this is detected by the sensor 28. The sensor 28 is preferably configured to detect an assembly state on the drill stand 30. This means that the sensor 28 can detect whether the machine tool 10 is mounted on a drill stand 30 (drill stand operating mode) or not. If the machine tool 10 is not mounted on a drill stand 30, the machine tool 10 can be operated in manual operating mode, for example.

[0079] Clearly visible in Figure 6 is the replaceable energy supply device 18, which is arranged in the second housing 22. The replaceable energy supply device 18 can be surrounded by a protective device 44 for the replaceable energy supply device 18 in order to protect it from falls or mechanical damage. In the exemplary embodiment of the invention shown in Figure 6, the energy supply device 18 can be inserted into the machine tool 10 from the rear; the insertion direction preferably runs from a rear side of the machine tool 10 in a spatial direction towards the front V. In the exemplary embodiment of the invention shown in Figure 6, the insertion direction E also runs essentially parallel to the shaft axis A1 and / or the motor axis A2.

[0080] Furthermore, the oblique rear view of the machine tool 10 shown in Figure 6 shows a display device 42, which may have input and output means and is preferably arranged so that it can be easily seen by a user. The first, rear handle 34 is shown in the rear, upper area of ​​the machine tool 10, while the replaceable energy supply device 18 is shown in the rear, lower area of ​​the machine tool 10. The housings 20, 22 of the machine tool 10 are offset from one another in both an upward-to-downward direction and a forward-to-backward direction in the machine tool 10 shown in Figure 6.In the context of the invention, this preferably means that the replaceable energy supply device 18 and the second housing 22 are arranged in the rear, lower region of the machine tool 10, while the motor 16 and the first housing 20 are arranged in a central, upper region of the machine tool 10. The tool holder 38 for the tool 12 of the machine tool 10 is located in the front region of the machine tool 10. The tool 12 can be driven by a shaft device 14, wherein the drilling axis A1 preferably runs centrally within the shaft device 14 or centrally within the tool 12.

[0081] In the machine tool 10 shown in Figure 6, the sensor 28 is arranged on the right-hand side S2 of the machine tool 10, while the second, lateral handle 36 is arranged on the left-hand side S1 of the machine tool 10. According to the invention, it is preferred that the sensor 28 and the drill stand interface 32 are arranged in a fixed location and in close proximity to one another on the machine tool 10. The lateral handle 36 can, for example, be rotatable. For example, the lateral handle 36 of the machine tool 10 can be rotated by up to 360°. This can significantly improve the operability of the machine tool 10, for example, for left-handed users.

[0082] Fig. 7 shows a side view of a preferred embodiment of the machine tool 10 with a second handle (side handle) 36 and a third handle (T-handle) 46. Fig. 8 shows an oblique rear view of such a machine tool 10. As can be seen from the different positions of the second handle 36 of the machine tool 10, the second handle 36, which in the sense of the invention is preferably also referred to as a side handle or side handle 36, can be designed to be rotatable so that the second handle 36 can be rotated around a neck of the machine tool 10. A complete rotation of the second handle 36 by, for example, 360° is preferred. However, smaller rotational capabilities can also be provided. The shaft axis A1 can preferably be regarded as the axis of rotation of the second handle 36. In other words, the second handle 36 can rotate around the shaft axis A1.In Figure 7, the second handle 36 extends along an upward-downward direction of the machine tool 10, so that the second handle 36 or an imaginary, virtual axis through the second handle 36 is substantially perpendicular to the shaft axis A1 or the motor axis A2, which runs substantially parallel or collinear thereto. In the machine tool 10 shown in Figure 8, the second handle 36 is rotated by 90° compared to the position of the second handle 36 shown in Figure 7, so that the second handle in Figure 8 is oriented substantially horizontally and protrudes laterally from the machine tool 10.

[0083] The third handle 46 of the machine tool 10 shown in Figure 7 is also arranged on the underside U of the machine tool 10. The third handle 46 can be used to virtually lay a third axis A3, which encloses an angle alpha with the shaft axis A1 and / or the motor axis A2. Angle alpha is shown in Figure 7. The third axes A3 and the shaft axis A1 and / or the motor axis A2 enclose two opposite angles, which add up to a total angle of 180°. For the purposes of the invention, the smaller of the two opposite angles is preferably considered angle alpha. The angle alpha can, for example, be approximately 80°, whereby for the purposes of the invention it is preferred that the angle alpha lies in a range from 60 to 100° or in a range from 70 to 90°.These angles advantageously lead to particularly ergonomic machine tool postures, so that work can be carried out with the machine tool 10 in a particularly gentle and / or prolonged manner. The second handle 36 and the third handle 46 in the machine tool 10 shown in Figure 7 lie in a plane that extends below the machine tool 10. In the machine tool 10 shown in Figure 8, the second handle 36 and the third handle 46 are not in the same plane, but rather the second handle 36 is rotated by 90° such that the second handle 36 is practically perpendicular to this plane below the machine tool 10. The display device 42, which can be provided on the rear side H of the machine tool 10, can be clearly seen in Figure 8. The display device 42 is preferably embedded in the second housing 22 of the machine tool 10.

[0084] The third handle 46 can be arranged below the first housing 20. Alternatively or additionally, the third handle 46 can be arranged below the second housing 22. Within the meaning of the invention, it can be particularly preferred for the third handle 46 to be arranged below a transition region between the first housing 20 and the second housing 22. This makes it possible to provide a particularly ergonomically balanced machine tool 10.

[0085] In the exemplary embodiment of the invention shown in Figure 8, the insertion direction E of the energy supply device 18 runs essentially perpendicular to the shaft axis A1 and / or the motor axis A2. In the sense of the invention, this preferably means that the energy supply device 18 can be inserted laterally into the machine tool 10. Preferably, the energy supply device 18 can be inserted into the machine tool 10 from right to left or from left to right. The energy supply device 18 can thus be installed in the machine tool 10 transversely to the shaft axis A1 and / or the motor axis A2. A battery axis can be defined which preferably coincides with the insertion direction E and which, in the exemplary embodiment of the invention shown in Figure 8, also runs perpendicular or transversely to the shaft axis A1 and / or the motor axis A2 of the machine tool 10.

[0086] Figure 9 shows a side view of a preferred embodiment of a machine tool 10 with an inclined display device 42. The display device 42 can be arranged on the rear side H of the machine tool 10 and embedded in the second housing 22 of the machine tool 10. The phrase "arranged at an incline" for the purposes of the invention preferably means that a plane 48 in which the display device 42 is located forms an angle beta with the shaft axis A1 and / or the motor axis A2, wherein this angle beta can be in a range between 20 and 70°. The angle beta is shown in Figure 9. Due to the inclined arrangement of the display device 42, the display device 42 can be viewed particularly easily by a user, and the displayed information and data can be acquired particularly simply.The display device 42 is arranged in particular so that it is in the field of vision of the user of the machine tool 10.

[0087] Figure 10 shows a rear view of a preferred embodiment of a machine tool 10 with battery protection elements 50. The battery protection elements 50 can form a protective device 44 for the energy supply device 18 of the machine tool 10. The battery protection elements 50 can preferably be column-like, tapered elements that grow out of the housing 20, 22 of the machine tool 10, like stalagmites or thorns. The battery protection elements 50 can have a height h that is greater than a projection d of the energy supply device 18 beyond the machine tool 10. This allows the corners of the energy supply device 18 of the machine tool 10 to be particularly well protected against falls or the machine tool toppling over. The projection d is shown in Figure 10.Preferably, the projection d is smaller than the height h of the battery protection elements: d < h, in order to ensure optimal protection of the power supply device 18 of the machine tool 10.

[0088] In the exemplary embodiment of the invention shown in Figure 10, the insertion direction E of the energy supply device 18 also runs essentially perpendicular or transverse to the shaft axis A1 and / or the motor axis A2 of the machine tool 10. As a result, the energy supply device 18 can advantageously be inserted laterally into the machine tool 10, so that a particularly short and compact machine tool 10 can be provided. Preferably, the energy supply device 18 can be inserted into the machine tool 10 from right to left or from left to right, which is indicated by the arrow with the two arrowheads. The energy supply device 18 can be installed in the machine tool 10 transversely to the shaft axis A1 and / or the motor axis A2, so that a battery axis also runs perpendicular or transversely to the shaft axis A1 and / or the motor axis A2 of the machine tool 10.

[0089] Figure 11 shows a possible embodiment of the machine tool 10 with an accessory device 60. The accessory device 60 has a soft support surface 64 that faces the user of the machine tool 10 when the user is working with the machine tool 10. The support surface 64 can be arranged on a body 62, wherein the body 62 further comprises connecting means 66 or is connected to these connecting means 66. With the connecting means 66, the accessory device 60 can be fastened to the machine tool 10, the protective device 44 for the power supply device 18 and / or to the battery protection elements 50. The power supply device 18 can be surrounded by a battery surrounding device 68. The connecting means 66 can, for example, also encompass the battery surrounding device 68 and in this way establish a connection between the accessory device 60 and the machine tool 10.The battery surrounding device 68 preferably also serves to protect the power supply device 18 of the machine tool 10.

[0090] Figure 12 shows a schematic sectional view of a possible embodiment of the accessory device 60. The left half of the image shows the energy supply device 18 and its battery surrounding device 68, while the right half of the image shows a possible embodiment of the accessory device 60. In addition to the components of the accessory device 60, the mounting direction M of the accessory device 60 is shown in particular, wherein the mounting direction M coincides with the insertion direction E of the energy supply device 18 in the exemplary embodiment of the accessory device 60 shown in Figure 12.

[0091] Figure 13 shows a possible embodiment of the machine tool 10 with an accessory device 60, wherein the accessory device 60 is mounted substantially perpendicular to the shaft axis A1 or the motor axis A2.

[0092] List of reference symbols

[0093] 10 Machine tool

[0094] 10U Bottom of the machine tool

[0095] 100 Top of the machine tool

[0096] 51 first side of the machine tool

[0097] 52 second side of the machine tool

[0098] 12 tools

[0099] 14 Shaft device

[0100] 16 Engine

[0101] 18 replaceable power supply devices

[0102] 20 first housing

[0103] 22 second housing

[0104] 24 Motor shaft

[0105] 28 Sensor

[0106] 30 drill stands

[0107] 32 Drill stand interface

[0108] 34 first / rear handle

[0109] 36 second / front handle, side handle

[0110] 38 tool holder

[0111] 40 Feed device

[0112] 42 Display device

[0113] 44 Protection device for power supply device

[0114] 46 third handle 48 display device level

[0115] 50 battery protection elements

[0116] 60 Accessory device

[0117] 62 Corpus

[0118] 64 contact surface

[0119] 66 connecting elements of the accessory device

[0120] 68 Battery environmental device

[0121] 100 systems

[0122] A1 Shaft axis

[0123] A2 Motor axle

[0124] A3 third axis through the third handle

[0125] M Mounting direction of the accessory device alpha Angle between third axis and shaft axis and / or motor axis beta Angle between the display device plane and shaft axis and / or motor axis d Overhang h Height of the battery protection elements

[0126] E Insertion direction

[0127] U bottom, spatial direction “downwards”

[0128] V front, spatial direction “forward”

[0129] H rear, spatial direction “to the rear”

[0130] O top, spatial direction “upwards”

Claims

Patent claims 1. Machine tool (10) with a tool (12) which can be driven by a shaft device (14) and a motor (16), wherein a position of the shaft device (14) is defined by a shaft axis A1 and a position of the motor (16) is defined by a motor axis A2, characterized in that the machine tool (10) can be connected to at least one interchangeable energy supply device (18) for energy supply and the shaft axis A1 runs substantially parallel or collinear to the motor axis A2.

2. Machine tool (10) according to claim 1 characterized in that the motor (16) comprises a motor shaft (24) wherein the motor axis A2 passes through the motor shaft (24).

3. Machine tool (10) according to claim 1 or 2 characterized in that the machine tool (10) comprises a first housing (20) and a second housing (22), wherein the first housing (20) is configured to at least partially encompass the motor (16) and the second housing (22) is configured to at least partially encompass the replaceable power supply device (18).

4. Machine tool (10) according to one of the preceding claims characterized in that the machine tool (10) has a device for receiving the at least one replaceable power supply device (18).

5. Machine tool (10) according to claim 4 characterized in that the device for receiving the at least one replaceable power supply device (18) is arranged in the second housing (22) of the machine tool (10). A machine tool (10) according to one of the preceding claims, characterized in that the shaft axis A1 and / or the motor axis A2 are arranged in a forward-reverse direction of the machine tool (10). A machine tool (10) according to one of the preceding claims, characterized in that the power supply device (18) can be inserted into the machine tool (10) along an insertion direction E. A machine tool (10) according to claim 7, characterized in that the insertion direction E is oriented substantially parallel to the shaft axis A1 and / or the motor axis A2. A machine tool (10) according to claim 7, characterized in that the insertion direction E is oriented substantially perpendicular to the shaft axis A1 and / or the motor axis A2.A machine tool (10) according to one of the preceding claims, characterized in that the machine tool (10) has at least one sensor (28) for detecting a connection state of the machine tool (10) to a drill stand (30). A machine tool (10) according to one of the preceding claims, characterized in that the machine tool (10) has a drill stand interface (32) for connecting the machine tool (10) to a drill stand (30). A machine tool (10) according to claim 11, characterized in that the drill stand interface (32) is located on a bottom surface (10U) of the machine tool. (10) is arranged. Machine tool (10) according to claim 11 or 12, characterized in that the at least one replaceable power supply device (18) is arranged in an extension of the shaft axis A1 and / or motor axis A2. Machine tool (10) according to claim 11, characterized in that the drill stand interface (32) is arranged on a top surface (100) of the machine tool (10). Machine tool (10) according to claim 11, characterized in that the drill stand interface (32) is arranged on a first side wall (S1) and / or on a second side wall (S2) of the machine tool (10). Machine tool (10) according to any one of claims 3 to 15, characterized in that the second housing (22) of the machine tool (10) is offset downwards in a spatial direction in an upward-downward direction compared to the first housing (20).A machine tool (10) according to one of the preceding claims, characterized in that the machine tool (10) comprises a second handle (36), wherein the second handle (36) is rotatably designed. A machine tool (10) according to one of the preceding claims, characterized in that the machine tool (10) has a display device (42), wherein the display device (42) is arranged at an inclination.

19. Machine tool (10) according to claim 18 characterized in that the display device (42) is embedded in an inclined display device plane (48).

20. Machine tool (10) according to one of the preceding claims characterized in that the machine tool (10) has a third handle (46) which is designed as a T-handle.

21. Machine tool (10) according to claim 20 characterized in that the third handle (46) is inclined.

22. Machine tool (10) according to one of the preceding claims characterized in that the machine tool (10) has a protective device (44) with battery protection elements (50).

23. Machine tool (10) according to claim 22 characterized in that the battery protection elements (50) grow out of the first housing (20) and / or the second housing (22) of the machine tool (10).

24. Machine tool (10) according to claim 22 or 23 characterized in that the battery protection elements (50) have a height h, wherein the height h is greater than a projection d of the power supply device (18).

25. Machine tool (10) according to one of the preceding claims characterized in that the machine tool (10) can be connected to an accessory device (60) by means of connecting means (66), wherein the accessory device (60) has a body (62) and a support surface (64), wherein the support surface (64) is designed to that a user of the machine tool (10) can support himself on the support surface (64).

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