Electric power tool, in particular hammer drill

Abstract

The present invention relates to a power tool, particularly a drill hammer, capable of operating in a first operating mode and at least one additional operating mode, the power tool having a drive unit (12) for driving an insert tool (14); a computing unit (16) configured to control or adjust the drive unit (12) such that the computing unit autonomously detects an activated operating mode; and a sensor unit (18) coupled to the computing unit (16) and configured to detect at least one environmental condition. The invention proposes that the computing unit (16) be configured to provide at least one additional operating function that can be activated in the additional operating mode, such that the computing unit activates or deactivates the additional operating function based on the at least one environmental condition and operator behavior, and autonomously and persistently deactivates the additional operating function in the first operating mode.

Description

Technical Field

[0001] This invention relates to a power tool, particularly a drill hammer, and a method for operating the power tool. Background Technology

[0002] A power tool, particularly a drill hammer, has been proposed capable of operating in a first operating mode and at least one additional operating mode, the power tool having a drive unit for driving a plug-in tool; a computing unit configured to control or adjust the drive unit such that the computing unit autonomously detects the activated operating mode; and a sensor unit coupled to the computing unit and configured to detect at least one environmental condition.

[0003] One of the most frequent problems when using electronic add-on operation functions such as ASC is the discrepancy between the operator's expected tool behavior and the actual tool behavior. The operator presses the operation switch and expects the power tool to run at full power. Because the power tool is electronically driven, depending on the configuration, it may react differently due to the embedded electronic add-on operation function. If the operator does not recognize that the electronic add-on operation function is activated and therefore the standard behavior is altered, this discrepancy will be perceived negatively by the operator.

[0004] An example of this problem is the "mode selection" in an impact hammer. Impact hammers offer two operating modes: Auto and Soft. Auto provides full power, while Soft provides limited power. If an operator uses the power tool and doesn't notice it's in "Soft" mode, they may perceive the tool as not powerful enough.

[0005] Another example is an additional operating function in the form of an "ECO" mode. The operator can activate ECO mode, causing the power tool to operate at reduced power to maximize the number of operations. If the operator runs the power tool in activated ECO mode for high-intensity work, the tool may not provide the required power and could therefore jam and stop.

[0006] Another example is an additional operating function in the form of ASC mode. The power tool operates at reduced power unless impact operation is confirmed. If an operator runs the power tool in the shop, for example, for testing purposes, the power tool is perceived as operating at low power. Summary of the Invention

[0007] The present invention relates to a power tool, particularly a drill hammer, capable of operating in a first operating mode and at least one other operating mode, the power tool having a drive unit for driving a plug-in tool; a computing unit configured to control or adjust the drive unit such that the computing unit autonomously detects the activated operating mode; and a sensor unit coupled to the computing unit and configured to detect at least one environmental condition.

[0008] The computing unit is configured to provide at least one additional operating function that can be activated in the additional operating mode, such that the computing unit activates or deactivates the additional operating function based on the at least one environmental condition and operator behavior, and autonomously and persistently deactivates the additional operating function in the first operating mode.

[0009] In this context, "power tool" should be understood in particular as a portable power tool that is at least partially electrically powered. Here, the power tool may not only have a battery but also a power interface. Here, "portable power tool" should be understood in particular as a machine tool for machining workpieces, which can be transported by the operator without transport machinery. Portable power tools particularly have a weight of less than 40 kg, preferably less than 10 kg, and particularly preferably less than 5 kg. The power tool is preferably composed of a handheld tool mechanism. "Handheld power tool" should be understood in particular as a machine for machining workpieces; however, advantageously, it includes drills, drill hammers and / or impact hammers, saws, planers, screwdrivers, milling machines, grinding machines, angle grinders, gardening tools, and / or multi-tools. Preferably, the power tool is composed of a drill hammer, which can perform both drilling and chiseling operations. Particularly preferably, the power tool has three operating modes. Preferably, these operating modes include at least one drilling mode, a chiseling mode, and / or an impact drilling mode.

[0010] The first and second operating modes are specifically designed for different applications. Preferably, at least one, preferably multiple, operating parameters of the power tool, preferably the drive unit, and / or the transmission of the power tool differ between the operating modes.

[0011] The drive unit is specifically configured to directly or indirectly drive the tool receiver for receiving insert tools. The drive unit is particularly composed of a motor, especially preferably an electric motor. Power tools preferably have a tool receiver for receiving and securing insert tools. The tool receiver can be, for example, a drill chuck or a quick-clamp chuck, such as, in particular, an SDS receiving device.

[0012] In this context, "sensor unit" should be understood in particular as a unit configured to record at least one characteristic parameter and / or physical characteristic, wherein such recording can occur actively, such as by generating and transmitting electrical measurement signals, and / or passively, such as by detecting changes in the characteristics of sensor components. Various sensor units that appear meaningful to those skilled in the art can be considered.

[0013] The term "computing unit" should be understood in particular as a unit having an information input terminal, an information processing terminal, and an information output terminal. Advantageously, the computing unit has at least one processor, memory, input and output devices, additional electrical components, an operating program, adjustment routines, control routines, and / or calculation routines. Preferably, the components of the computing unit are arranged on a common circuit board and / or advantageously arranged in a common housing. The computing unit is configured to "at least autonomously detect the activated operating mode" should be understood in particular as the computing unit being configured, at least during operation, to autonomously detect the operating mode, especially selected by the operator, particularly independently of the data technology connection between the mode selection switch and the computing unit. Preferably, the power tool has a mode selection switch through which the operator selects the desired operating mode. Here, the mode selection switch can be constructed not only by a mechanical switch, especially in conjunction with the power tool's transmission mechanism, but also by an electronic switch. Preferably, the computing unit is configured to detect the selected operating mode based on the operating behavior of the power tool. Here, the operating behavior can be detected, particularly by means of sensors, such as accelerometers. Alternatively, the computing unit could be allowed to autonomously select and adjust its operating mode.

[0014] The computing unit is configured to provide an additional operating function that can be activated in another operating mode. Preferably, the additional operating function is specifically designed for the other operating mode. Preferably, the additional operating function is not activated in at least one of the operating modes of the power tool. Preferably, the additional operating function is both activatable and deactivated in the other operating mode. Particularly preferably, the additional operating function is only temporarily activated in the other operating mode. The additional operating function is activated and / or deactivated autonomously by the computing unit in the other operating mode. The additional operating function is persistently ready and reserved for activation in the other operating mode. Various additional operating functions that appear meaningful to those skilled in the art can be considered, such as soft start, speed regulation, speed reduction, ECO mode, or similar functions. The additional operating function depends particularly on the type and operating mode of the power tool.

[0015] In this context, "continuously disabled" should be understood in particular as the additional running function remaining disabled for the duration of the current run and / or for the current run in running mode. Preferably, the state of the additional running function is reset when the power tool is restarted or when running begins.

[0016] The power tool configuration according to the invention offers a particularly advantageous level of operator friendliness. It enables autonomous activation and deactivation of additional operating functions without compromising the user experience. Furthermore, it minimizes the intervention of the computing unit in the operator's perception and allows the operator to achieve optimal tool operation based on the application, without requiring the operator to activate additional operating functions via a button or their smartphone. An additional benefit is the saving on the cost of additional sensors and hardware, such as buttons, LED displays, and sensors. The invention adds an intelligent layer to the power tool, making the operator less of a decisive factor in activating or deactivating functions. For each additional operating function, it can be further determined whether it should always be activated or whether the operator is given the option to select the additional operating functions that are important to them. During operation, the computing unit determines when to activate or deactivate additional operating functions based on various conditions, which may or may not be directly related to the user's selection. The advantage of this solution is that additional operating functions are activated only when truly needed. Once the function is ready, the tool activates it when all conditions are met.

[0017] Furthermore, it is proposed that the computing unit is configured at the start of operation to keep the additional operating function completely disabled until another operating mode is detected. In this context, "keep disabled" should be understood in particular as meaning that the additional operating function remains disabled in this state even if the operating conditions associated with it are met. Here, the operating conditions are particularly independent of the operating mode. Preferably, the additional operating function is activated or placed in a ready mode only when it can be reliably detected that the power tool is in another operating mode. This avoids activating the additional operating function for the operator in the first operating mode, where the operator may, for example, drill at a reduced speed or feel that the power tool does not have sufficient power.

[0018] Furthermore, it is proposed that the computing unit is configured to operate the additional operating function in such a way that the additional operating function is persistently placed in a ready-to-go mode in another operating mode. Preferably, the additional operating function remains in a ready-to-go mode during unchanging use until the power tool is shut down or until it is switched to another operating mode. In this context, "persistently" should be understood in particular as the additional operating function remaining in a ready-to-go mode for the duration of the current operation during unchanging use and / or during the current operation in one operating mode. Preferably, the state of the additional operating function is reset when the power tool is restarted or when operation begins. This enables the additional operating function to be provided intuitively. In particular, it avoids the need for continuous checks on the operating mode. Furthermore, the ready-to-go mode enables rapid activation of the additional operating function. In the ready-to-go mode, the computing unit continuously checks whether the operating conditions related to the additional operating function are met, wherein the additional operating function is directly activated when the operating conditions are met. Here, the operating conditions consist in particular of detected environmental conditions and operator behavior. Here, environmental conditions can be, for example, the contact between the insert tool and the workpiece, or environmental parameters such as ambient pressure, ambient temperature, and the position of the power tool. Specifically, two scenarios can be distinguished. If the user operates the switch and the external conditions for activating the additional operating function are not met, the additional operating function is deactivated, causing the drive unit to operate at maximum speed by the calculation unit. If the external conditions are met at a specific point in time, the additional operating function is activated, and the calculation unit calculates the operating speed of the drive unit based on the external conditions.

[0019] Furthermore, it is proposed that the first operating mode consists of a drilling operating mode. Further, it is proposed that the other operating modes consist of an impact operating mode or an impact drilling operating mode. Preferably, the power tool is composed of a drill hammer, which can be switched between drilling, impact, and / or impact drilling operating modes via an operating mode selection switch. The power tool preferably has at least three operating modes. However, other configurations of the power tool and / or operating modes that appear meaningful to those skilled in the art are also possible. Preferably, the computing unit can distinguish between the drilling operating mode and the impact or impact drilling operating mode by impact detection. Preferably, the computing unit is particularly configured to assume that the power tool is in the first operating mode, i.e., the drilling operating mode, until an impact is detected and the computing unit identifies the other operating mode, i.e., the impact or impact drilling operating mode.

[0020] Furthermore, it is proposed that the additional operating function consists of adaptive speed regulation. This additional operating function is particularly comprised of the ASC (Adaptive Speed ​​Control) function. This function provides improved control of the power tool, for example, when the power tool is in impact operation, especially in chiseling mode. The computing unit and / or sensor unit can, in particular, identify when the insert tool is in contact with the material. Therefore, when contact is present, the power tool can output full power, and when no contact is present, it outputs reduced power. The advantages of this function include, for example, optimized battery life, reduced noise and vibration, or the use of hammer drills in sensitive materials. Conditions for activating speed regulation, especially the reduction in speed, can be, for example, active impact operation and the lack of recognition of contact between the insert tool and the material. Alternatively or additionally, the additional operating function can also be a smart ECO mode. The condition for activating ECO mode can, in particular, be a battery charge below 50%. Thus, an advantageous additional operating function can be provided, which can be advantageously activated and deactivated autonomously by the computing unit.

[0021] Furthermore, it is proposed that the power tool has an impact mechanism unit, wherein the sensor unit is configured to detect impacts from the impact mechanism unit. Preferably, the sensor unit particularly includes an acceleration sensor, a vibration sensor, and / or a contact sensor within the impact mechanism. However, other configurations of the sensor unit that appear meaningful to those skilled in the art can also be considered. In particular, the impact mechanism unit is constructed as a pneumatic impact mechanism unit. This, in particular, enables advantageous identification of impacts from the impact mechanism, wherein the identification of the impact can advantageously be further processed by a computing unit.

[0022] Furthermore, it is proposed that the power tool has an operating switch coupled to a computing unit, which is configured for operation by the operator during operation and has multiple operation levels. The "operating switch" should be understood in particular as an element configured to receive input parameters from the operator during operation and is directly contacted by the operator, wherein the touch of the operating element is sensed and / or the operating force applied to the operating element is sensed and / or the operating force is mechanically transmitted for operating a unit. Preferably, the operating switch is composed of a trigger capable of achieving stroke-related operation. The operating switch is particularly used to activate the operation of the power tool. Preferably, the speed of the drive unit of the power tool can be adjusted by means of the operating switch, particularly according to the operating stroke. Soft start can be performed, in particular, by means of the operating switch. Thus, an advantageous operating element can be provided, particularly for the power tool.

[0023] Furthermore, this invention starts with a method for operating a power tool. It proposes that, in a detection step, an activated operating mode is detected by a computing unit, and additional operating functions are placed in a ready-to-use mode when another operating mode is identified. Preferably, the computing unit autonomously detects an operating mode, particularly selected by the operator, during operation, especially independently of the data technology connection between the mode selection switch and the computing unit. The computing unit detects the selected operating mode based on the operating behavior of the power tool. Here, the operating behavior can be detected, particularly by means of sensors, such as accelerometers. Alternatively, the computing unit can autonomously select and set the operating mode. This advantageously allows the computing unit to autonomously provide additional operating functions based on the operating mode. In particular, it avoids the computing unit activating additional operating functions incompatible with the corresponding operating mode.

[0024] Furthermore, it is proposed that the computing unit keeps the additional operating function completely disabled at the start of operation until another operating mode is detected during the detection step. Preferably, even if the operating conditions related to the additional operating function are met, the additional operating function remains disabled in this state. Here, the operating conditions are particularly independent of the operating mode. Preferably, the additional operating function is only activated or placed in a ready mode when it can be reliably detected that the power tool is in another operating mode. This avoids activating the additional operating function for the operator in the first operating mode and thus prevents the operator from drilling at a reduced speed or feeling that the power tool lacks sufficient power.

[0025] Furthermore, it is proposed that the computing unit autonomously activates additional operating functions based on at least one environmental condition and operator behavior in another operating mode. In the ready mode, the computing unit continuously checks whether the operating conditions related to the additional operating functions are met, wherein the additional operating functions are directly activated when the operating conditions are met. Here, the operating conditions consist, in particular, of the detected environmental conditions and operator behavior. Here, environmental conditions may be, for example, the contact between the insert tool and the workpiece, or environmental parameters such as ambient pressure, ambient temperature, and the position of the power tool.

[0026] The power tool and method according to the present invention should not be limited to the applications and embodiments described above. In particular, the power tool and method according to the present invention may have a number different from the number of the various elements, components, units, and method steps mentioned herein in order to achieve the functional mode described herein. Furthermore, for the numerical ranges given in this disclosure, values ​​within the mentioned limits should also be considered as disclosed and can be used arbitrarily. Attached Figure Description

[0027] Other advantages will become apparent from the following description of the accompanying drawings. One embodiment of the invention is illustrated in the drawings. The drawings, description, and claims contain numerous combinations of features. Those skilled in the art will also consider these features individually and summarize them into other meaningful combinations.

[0028] The attached diagram shows: Figure 1 The schematic diagram illustrates a power tool machine according to the present invention, comprising a drive unit, a computing unit, a sensor unit, and an operating switch. Figure 2 : A schematic flowchart of a method for operating a power tool according to the present invention. Figure 3 A schematic diagram showing the change of drive power of the drive unit of the power tool according to the present invention over time in the impact drilling operation mode, and Figure 4 A schematic curve showing the change of drive power of the drive unit of the power tool according to the present invention over time in impact operation mode. Detailed Implementation

[0029] Figure 1 A power tool 10 is shown. The power tool 10 comprises a drill hammer, particularly a battery-powered drill hammer. The power tool 10 includes an impact mechanism unit 20 with a pneumatic impact mechanism. The power tool 10 has an impact mechanism unit 20 for generating impact pulses, particularly axial impact pulses, that act on an insert tool 14 that can be arranged in a tool receiving section 26 of the power tool 10. The power tool 10 has a tool receiving section 26. Furthermore, the power tool 10 has a drive unit 12 for driving the insert tool 14. The drive unit 12 is constituted by an electric motor. Furthermore, the power tool 10 has a transmission device 28 arranged between the drive unit 12 and the tool receiving section 26. Furthermore, the power tool 10 has a housing 32 in which the drive unit 12, the impact mechanism unit 20, and the transmission device 28 are arranged.

[0030] Furthermore, the power tool 10 has a mode selection switch 30 that works in conjunction with the transmission device 28 and the impact mechanism unit 20. The mode selection switch 30 is used to manually select and adjust the operating mode of the power tool 10. The power tool 10 has, for example, three operating modes. The power tool 10 has a first operating mode and two additional operating modes. The first operating mode is a drilling operating mode. The first additional operating mode is an impact drilling operating mode. The second additional operating mode is an impact operating mode. The mode selection switch 30, for example, works mechanically in conjunction with the transmission device 28 and the impact mechanism unit 20 to achieve these operating modes. The mode selection switch 30 is arranged on the exterior of the housing 32.

[0031] Furthermore, the power tool 10 has a computing unit 16, which is configured to operate the drive unit 12 in at least one operating state. The computing unit 16 is configured to regulate the speed of the drive unit 12. The power tool 10 also has a sensor unit 18, coupled to the computing unit 16 and configured to detect at least one environmental condition. The sensor unit 18 is configured to detect impacts from the impact mechanism unit 20. The sensor unit 18 includes, for example, an acceleration sensor. However, other configurations of the sensor unit that appear meaningful to those skilled in the art can also be considered. During operation, the computing unit 16 is configured to autonomously detect activated operating modes. The computing unit 16 is configured to detect the selected operating mode based on the operating behavior of the power tool 10. Here, the operating behavior is detected by means of the sensor unit 18.

[0032] The calculation unit 16 is configured to provide at least one additional operating function that can be activated in another operating mode. The additional operating function is specifically designed for that additional operating mode. The additional operating function is inactive, particularly at least in the first operating mode of the power tool 10. Furthermore, the additional operating function is both active and deactivated in the other operating mode. Particularly preferably, the additional operating function is only temporarily active in the other operating mode. The additional operating function is activated and / or deactivated autonomously by the calculation unit 16 in the other operating mode. The additional operating function is continuously ready for activation in the other operating mode. Various additional operating functions that appear meaningful to those skilled in the art can be considered, such as soft start, speed regulation, speed reduction, ECO mode, or similar functions. The additional operating function depends particularly on the type and operating mode of the power tool. The additional operating function may be, for example, an adaptive speed regulation. The additional operating function may be, in particular, an ASC function. This function provides improved control over the power tool, for example, when the power tool is in impact operation, especially in chiseling mode. However, other additional operating functions that would be meaningful to those skilled in the art can also be considered. In particular, it is also conceivable that the computing unit 16 has multiple additional operating functions, each associated with the same or different operating modes. The computing unit 16 is configured to autonomously activate and deactivate the additional operating functions in another operating mode based on at least one environmental condition and operator behavior. Furthermore, the computing unit 16 is configured to autonomously and permanently deactivate the additional operating functions in the first operating mode. With the aid of the computing unit 16 and the sensor unit 18, it is possible to identify when the insert tool 14 is in contact with the material or workpiece. Therefore, when contact is present, the power tool 10 can output full power, while when no contact is present, it outputs reduced power. The advantages of this function include, for example, optimized battery life, reduced noise and vibration, or use of hammer drilling in sensitive materials. Conditions for activating speed regulation, especially a reduction in rotational speed, could be, for example, an active impact function and the lack of recognition of contact between the insert tool and the material.

[0033] Furthermore, the calculation unit 16 is configured at the start of operation to keep the additional operating function completely disabled until one of the other operating modes is detected. In this state, the additional operating function remains disabled even if the operating conditions related to the additional operating function are met. Here, the operating conditions are particularly independent of the operating mode. Preferably, the additional operating function is only activated or placed in the ready mode when it can be reliably detected that the power tool 10 is in another operating mode. Furthermore, the calculation unit 16 is configured to persistently place the additional operating function in the ready mode in another operating mode. Preferably, the additional operating function remains in the ready mode during unchanging use until the power tool 10 is turned off or until it is switched to another operating mode.

[0034] Furthermore, the power tool 10 has an operating switch 22 coupled to the computing unit 16. This operating switch is configured for operation by the operator during operation and has multiple operating levels. The operating switch 22 is composed of a trigger capable of stroke-related operation. The operating switch 22 is used to activate the operation of the power tool 10. With the aid of the operating switch 22, the speed of the drive unit 12 of the power tool 10 can be adjusted, particularly according to the operating stroke. Soft start can be performed, in particular, with the aid of the operating switch 22. The operating switch 22 is directly coupled to the computing unit 16 and only indirectly coupled to the drive unit 12. Therefore, during operation, the position of the operating switch 22 is detected by the computing unit 16, and the drive unit 12 is operated according to that position. The operating switch 22 is arranged on the handle 34 of the power tool 10. The handle 34 is, for example, composed of an arc-shaped handle arranged on the housing 32.

[0035] Figure 2 A schematic flowchart of a method for operating a power tool 10 is shown. The method begins with a setup step 36. In setup step 36, the power tool 10 is prepared for operation. Here, the power tool 10 is, for example, removed from its case by the operator, who selects and sets the desired operating mode. Operation then begins. A detection step 24 is performed at the start of operation. In detection step 24, the activated operating mode is detected by means of a computing unit 16, and additional operating functions are placed in a ready-to-operate mode when another operating mode is identified. Here, the computing unit 16 autonomously detects the operating mode selected by the operator during operation, without requiring a data connection between the mode selection switch 30 and the computing unit 16. The computing unit 16 detects the selected operating mode based on the operating behavior of the power tool 10. Here, the operating behavior is detected, in particular, by means of a sensor unit 18. The computing unit 16 keeps the additional operating functions completely disabled at the start of operation until another operating mode is detected in detection step 24.

[0036] If no impact is detected by sensor unit 18, calculation unit 16 departs from the first operating mode and the additional operating functions remain disabled. Drilling operation step 38 then proceeds. If drilling operation step 38 ends or is interrupted, inspection or termination step 44 follows, and inspection step 24 is executed again or operation ends. Alternatively, inspection step 24 can be executed continuously during operation.

[0037] If an impact is detected by sensor unit 18, calculation unit 16 starts from one of the other operating modes and places the additional operating function in a ready mode in the subsequent impact drilling operation step 40 or the subsequent impact operation step 42. This is followed by calculation steps 46 and 48, in which it is determined whether the additional operating function should be activated. In the ready mode or in calculation steps 46 and 48, calculation unit 16 continuously checks whether the operating conditions related to the additional operating function are met, wherein, if the operating conditions are met, the additional operating function is directly activated in activation steps 50 and 52. Here, the operating conditions consist of detected environmental conditions and operator behavior. Here, environmental conditions may be, for example, the contact between the insert tool and the workpiece. In the current embodiment, the impact of the impact mechanism unit 20 is detected as an environmental condition. During operation in impact drilling operation step 40 or impact operation step 42, the additional operating function is autonomously activated or aborted by calculation unit 16. Calculation unit 16 autonomously activates the additional operating function in another operating mode based on the at least one environmental condition and operator behavior. If the impact drilling operation step 40 or impact operation step 42 ends or is interrupted, then the next step is inspection or termination step 44, and inspection step 24 is performed again or the operation ends. In principle, it is also possible to consider performing inspection step 24 continuously during operation.

[0038] Figure 3A schematic graph showing the change in drive power of the drive unit 14 of the power tool 10 according to the invention over time in impact drilling operation mode is shown. The calculation unit 16 assumes the operator wants to drill using the impact function. Here, the operator uses a variable operating switch 22 to begin drilling the workpiece at a low speed and then increases the speed to full speed (section 54). Here, the calculation unit 16 has already detected the impact of the impact mechanism 20 during acceleration to maximum speed and puts the additional operation function into a ready mode. Detected impacts are indicated by shaded asterisks 56. Because the operator runs the power tool 10 at full drive power and continues to detect impacts, the additional operation function remains only in the ready mode and remains suspended (section 58). Subsequently, the operator pulls the power tool 10 back to ventilate the hole, so that the impact cannot be detected by the calculation unit 16. Undetected impacts are indicated by unshaded asterisks 60. The calculation unit 16 activates the additional operation function, and the rotational speed of the drive unit 12 is reduced to an exemplary 75% (section 62). If the operator drills again, an impact is detected again, and the additional operation function is aborted. The rotational speed of the drive unit 12 is then set back to 100% (section 64). If the operation ends, the additional operation function is automatically deactivated.

[0039] Figure 4 A schematic graph showing the change in drive power of the drive unit 14 of the power tool 10 according to the invention over time in impact operation mode is shown. The calculation unit 16 assumes that the operator wants to remove tiles, for example. Here, the operator uses a variable operation switch 22 to start chiseling at a low speed, then increases the speed to full speed (section 66). Here, the calculation unit 16 has already detected the impact of the impact mechanism 20 during acceleration to maximum speed and puts the additional operation function into a ready mode. Detected impacts are represented by shaded asterisks 56. Because the operator runs the power tool 10 at full drive power and continues to detect impacts, the additional operation function remains only in the ready mode and remains suspended (section 68). Subsequently, the operator pulls the power tool 10 back, for example, for repositioning, so that the impact cannot be detected by the calculation unit 16. Undetected impacts are represented by unshaded asterisks 60. The calculation unit 16 activates the additional operation function, and the rotational speed of the drive unit 12 is reduced to an exemplary 75% (section 70). If the operator chisels again, an impact is detected again and the additional operation function is aborted. The rotational speed of drive unit 12 is then set to 100% (segment 72). If the operation ends, the additional operation function is automatically deactivated.

Claims

1. A power tool, particularly a drill hammer, capable of operating in a first operating mode and at least one other operating mode, said power tool having: Drive unit (12) for driving plug-in tool (14); The computing unit (16) is configured to control or adjust the driving unit (12) so that the computing unit can autonomously detect the activated operating mode. and Sensor unit (18), coupled to computing unit (16) and configured to detect at least one environmental condition, The computing unit (16) is characterized in that it is configured to provide at least one additional operating function that can be activated in the other operating mode, such that the computing unit activates or deactivates the additional operating function according to the at least one environmental condition and operator behavior and autonomously and continuously deactivates the additional operating function in the first operating mode.

2. Electric power tool machine according to claim 1, characterized in that The computing unit (16) is configured at the start of operation to keep the additional operating functions completely disabled until another operating mode is detected.

3. Electric power tool machine according to claim 1 or 2, characterized in that The computing unit (16) is configured to run the additional running function such that the additional running function is persistently placed in the ready mode in the other running mode.

4. Electric power tool machine according to any of the preceding claims, characterized in that The first operating mode consists of the drilling operating mode.

5. Electric power tool machine according to any of the preceding claims, characterized in that, The other operating mode consists of an impact drilling operating mode or an impact operating mode.

6. Electric power tool machine according to any of the preceding claims, characterized in that The additional operating function consists of adaptive speed adjustment.

7. The power tool according to any one of the preceding claims, characterized in that... It has an impact mechanism unit (20), wherein the sensor unit (18) is configured to detect the impact of the impact mechanism unit (20).

8. The power tool according to any one of the preceding claims, characterized in that... It has an operation switch (22) coupled to the computing unit (16), the operation switch being configured to be operated by the operator during operation, and the operation switch having multiple operation levels.

9. A method for operating a power tool according to any one of the preceding claims, characterized in that, In the detection step (24), the computing unit (16) detects the activated operating mode and, when the additional operating mode is identified, places the additional operating function in the ready mode.

10. The method according to claim 9, characterized in that, The computing unit (16) keeps the additional operating functions completely disabled at the start of operation until an additional operating mode is detected in the detection step (24).

11. The method according to claim 9 or 10, characterized in that, The computing unit (16) autonomously activates the additional operating function in the other operating mode based on the at least one environmental condition and operator behavior.

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