• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention is based on a hand-held power tool device with a striking mechanism unit (12), which is provided in particular for generating a pulse on an insertion tool (14), and with a sensor unit (16) which at least partially detects at least one operating and / or or environmental parameters is provided. It is proposed that the sensor unit (16) comprises at least one sensor element (20) which is provided at least partially for detecting a spatial position of the impact mechanism unit (12).
    公开号:AT514452A2
    申请号:T504/2014
    申请日:2014-06-26
    公开日:2015-01-15
    发明作者:
    申请人:Bosch Gmbh Robert；
    IPC主号:
    专利说明:

    description
    Hand tool machine device prior art
    It has already been proposed a hand tool device according to the preamble of claim 1.
    Disclosure of the invention
    The invention is based on a handheld power tool device with a percussion unit, which is provided in particular for generating a pulse on an insert tool, and with a sensor unit which is provided at least partially for detecting at least one operating and / or environmental parameter.
    It is proposed that the sensor unit comprises at least one sensor element which is provided at least partially for detecting a spatial position of the impact mechanism unit. In this context, a "percussion unit" should be understood to mean, in particular, a unit which at least partially generates a pulse, in particular an insertion tool of a handheld power tool, in particular by converting a rotational movement of a drive unit of the hand tool into a linear movement, and / or is provided for a rotary drive of the insert tool in an operating state. The percussion unit in particular comprises at least one piston element which is preferably at least partially mechanically coupled to a drive unit which preferably comprises the handheld power tool. The piston element is preferably provided to perform a linear movement in an operating state. The guide element is preferably formed by a hammer tube and is preferably also provided for a linear guidance of the piston element. In a particularly preferred embodiment, the percussion unit comprises a pneumatic striking mechanism.
    In this context, a "operating and / or environmental parameter" is to be understood as meaning, in particular, a parameter which particularly describes and / or comprises at least one chemical and / or preferably at least one physical property, and / or which at least partially depends on an operating state of the Impact unit and / or at least partially formed depending on a direct environment of the percussion unit.
    The handheld power tool device further comprises a control and / or regulating unit, which is at least partially provided for controlling and / or regulating the percussion mechanism unit, at least partially as a function of the at least one operating and / or environmental parameter. In this context, a "control and / or regulation" is to be understood as meaning, in particular, an operation which is at least partially independent of an operating state of the drive unit and / or percussion unit and in particular at least partially decoupled from a rotational speed of the drive unit. at least partially actively influencing an operation of at least the percussion unit and / or at least partially adapting and / or approximating the operation of the percussion unit to a predetermined sequence and / or in particular changing dynamically changeable operating parameters of the impact unit, preferably according to an algorithm, in particular actively. The control and / or regulating unit may in particular be at least partially formed mechanically, more preferably at least partially electronically. Preferably, the control and / or regulating unit additionally comprises an arithmetic unit and in particular in addition to the arithmetic unit a memory unit with a control and / or regulating program stored therein, which is intended to be executed by the arithmetic unit. In a particularly preferred embodiment, the control and / or regulating unit comprises at least one microcontroller.
    The control and / or regulating unit preferably forms at least partially an electronic unit of the handheld power tool, which comprises the handheld power tool device. An "electronic unit" is to be understood in this context, in particular, as a unit which, at least in one operating state of the handheld power tool, is at least partially provided for a control and / or a control, in particular the drive unit of the handheld power tool. The electronic unit preferably comprises at least one motor controller of the drive unit. The electronic unit preferably has electronic components such as in particular at least one transistor, at least one capacitor, at least one processor, particularly preferably at least one field effect transistor (MOSFET) and / or at least one bipolar transistor, in particular with an insulated gate electrode (IGBT).
    By "depending on" should be understood in particular an at least partially direct relationship. In this context, a "sensor element" should be understood to mean, in particular, an element which is at least partially provided, at least one parameter which in particular comprises the angular acceleration and / or the linear acceleration and which in particular has at least one chemical and / or preferably at least one physical property describes and / or comprises to convert into an analog, binary and / or preferably digital electrical signal and to provide the electrical signal, in particular a control and / or regulating unit available. The sensor element may preferably comprise at least one strain gauge, at least one sensor of a micro-electro-mechanical system (MEMS), in particular at least one gyrosensor, at least one piezoceramic sensor plate and / or at least one other embodiment of a sensor that appears appropriate to a person skilled in the art.
    In this context, a "spatial position of the percussion mechanism unit" should be understood in particular to mean, in particular, a spatial and three-dimensional orientation of the machining axis of the insertion tool, in particular relative to the fixed effective direction of the weight force.
    The embodiment of the handheld power tool device according to the invention makes it possible to achieve a preferably precise control and / or regulation of at least the percussion mechanism unit of the handheld power tool device.
    Furthermore, it is proposed that the at least one sensor element (26) of the sensor unit is at least partially formed by an acceleration sensor. An "acceleration sensor" is to be understood in this context, in particular a sensor element which is at least partially intended to measure at least one acceleration in at least one direction, in particular by determining or detecting an inertial force acting on a test mass. As a result, for example, a speed increase or decrease can be determined. The acceleration sensor belongs in particular to the group of inertial sensors. Alternatively or additionally, at least one temperature sensor, at least one rotational speed sensor, at least one torque sensor, at least one pressure sensor, at least one speed sensor, at least one virtual sensor and / or at least one other sensor element that appears sensible to a person skilled in the art are conceivable. In a particularly preferred embodiment, the sensor element of the sensor unit is at least partially formed by a three-axis acceleration sensor. In this context, a "three-axis acceleration sensor" should be understood as meaning, in particular, a sensor element formed by a motion sensor, which has three measuring axes, each of which characterizes a detectable acceleration direction. The three measuring axes are preferably arranged perpendicular to one another, with one of the three measuring axes forming an x-axis, a y-axis and a z-axis, whereby a coordinate system is thus spanned. As a result, an advantageously simple and cost-effective design of the sensor element of the handheld power tool device can be achieved.
    It is also proposed that the sensor unit comprises at least one further sensor element, which is at least partially formed by a pressure sensor and which is provided at least partially for detecting an ambient air pressure. In particular, when the percussion mechanism unit comprises a pneumatic percussion mechanism, the ambient air pressure of the handheld power tool device can influence or impair an operation and / or a function of the impact mechanism unit.
    By detecting the ambient air pressure, a counter-control can be achieved and an impairment of the percussion unit can thus be reduced or avoided.
    Zudep ^ it is proposed that the handheld power tool device has at least one output unit, which is provided for a perceivable by an operator output of the detected by the at least one sensor element spatial position of the percussion unit. By "perceptible" is to be understood in this context, in particular with at least one of the human sensory organs clearly noticeable, especially without technical aids. Preferably, the output unit is at least partially visible, audible and / or noticeable
    Output of the detected by the at least one sensor element spatial position of the percussion unit provided. As a result, a preferably comfortable and simple handling and operability, in particular of the handheld power tool, which comprises the handheld power tool device according to the invention, can be achieved.
    Furthermore, it is proposed that the handheld power tool device comprises at least one interface unit which is provided at least partially for exchanging an operating and / or environmental parameter data record with an external information unit. In this context, an "external information unit" should be understood to mean, in particular, a unit which is at least partially provided to provide at least one information that is at least partially relevant to the handheld power tool device and which is at least virtually separate and preferably independent of the handheld power tool device. is operable and usable. As a result, it is possible to achieve a control and / or regulation, which is preferably precise and adapted to a specific application, of at least the percussion mechanism unit of the handheld power tool device.
    In addition, it is proposed that the at least one sensor element of the sensor unit is provided at least for detecting the angular acceleration, in particular about a machining axis of the insertion tool, and a linear acceleration which extends at least substantially parallel to the machining axis of the insertion tool. As a result, a preferably precise control and / or regulation of the handheld power tool device and advantageously high operator safety can be achieved.
    Furthermore, a hand tool with a hand tool device according to the invention is proposed.
    In addition, a sensor unit of a hand-held power tool device according to the invention is proposed.
    The hand-held power tool device according to the invention should not be limited to the application and embodiment described above. In particular, in order to fulfill a mode of operation described herein, the handheld power tool device according to the invention may have a number deviating from a number of individual elements, components and units mentioned herein.
    drawing
    Further advantages emerge from the following description of the drawing. In the drawing, an embodiment of the invention is shown. The drawing, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.
    Show it:
    1 shows a hand-held power tool with a hand-held power tool device according to the invention in a schematic side view, and FIG. 2 shows the hand-held power tool device according to the invention in a schematic representation.
    Description of the embodiment
    FIG. 1 shows a handheld power tool 36 formed by a hammer drill with a handheld power tool device 10. However, it is also conceivable that other embodiments of the portable power tool 36 that appear appropriate to a person skilled in the art, for example as a percussion drill, as a chisel hammer or as a demolition hammer, are conceivable. The hand tool machine 36 is formed by an electric hand tool machine. In a front region of the portable power tool 36, a tool holder 38 is arranged, which is provided for receiving an insert tool 14, in particular a drilling or chisel insert tool. Furthermore, in the front region of the handheld power tool 36 there is an auxiliary handle 40 and, on a side of the handheld power tool 36 facing away from the front region, a main handle 42, via which the handheld power tool 36 can be guided by an operator. The main handle 42 is U-shaped. On the main handle 42, an operable by an operator switching element 44 is arranged, which is provided for actuation of a drive unit 46. The auxiliary handle 40 is rod-shaped. A housing 48 of the power tool 36 encloses the unspecified, formed by an electric motor drive unit 46 which is actuated by the switching element 44, and the power tool device 10. The drive unit 46 is provided to drive a percussion unit 12 of the power tool device 10 of the power tool 36.
    The hand-held power tool device 10 comprises the hammer mechanism unit 12. The hammer mechanism unit 12 is provided to drive the insert tool 14, which is held in the tool holder 38 of the hand-held power tool 36, in a rotary and / or translatory manner. The percussion unit 12 is intended to drive the insert tool 14 in a hammer operating state translationally, in a Schlagbohrbetriebszustand rotationally and translationally and in a Bohrbetriebszustand rotationally. The percussion unit 12 is intended to drive the insert tool 14 rotating and / or beating. The impactor unit 12, not shown, includes a transmission element formed by an anvil, which is provided in the hammer operating state and in the Schlagbohrbetriebszustand to a transmission of a pulse to the insert tool 14. The percussion unit 12 also has a guide element, which is provided in an operating state of the impact mechanism unit 12 to a guide of the at least one transmission element. The guide element is formed by a hammer tube. The guide element is provided for a linear guidance of a transmission element, a racket element and a piston element parallel to a processing axis 30 of the insert tool 14 which forms an axial direction 50 of the percussion unit 12. In the guide element, a piston element driven by the drive unit 46 is guided in the axial direction 50. Viewed from the drive unit 46 to the tool holder 38 out in the axial direction 50 behind the piston member, the racket element is arranged. The beater element is also movably mounted in the axial direction 50 in the guide element.
    FIG. 2 schematically shows the handheld power tool device 10. The handheld power tool device 10 has a sensor unit 16 which is provided for detecting at least one operating and / or environmental parameter of the handheld power tool device 10. The sensor unit 16 is provided for detecting one or more operating parameters of the hammer mechanism unit 12. In addition, the sensor unit 16 is provided for detecting one or more environmental parameters of the percussion unit 12. The sensor unit 16 is provided for detecting an angular acceleration about the machining axis 30 of the insertion tool 14 and a linear acceleration parallel to the machining axis 30 of the insertion tool 14.
    The sensor unit 16 includes at least one first sensor element 20, which is provided for detecting the at least one operating and / or environmental parameter of the handheld power tool device 10. The first sensor element 20 is provided for detecting a spatial position of the hammer mechanism unit 12 of the handheld power tool device 10. The first sensor element 20 is provided for detecting the spatial position of the machining axis 30 of the insertion tool 14 relative to the direction of action of the weight of the power tool device 10. The first sensor element 20 is provided for detecting an operating state of the percussion unit 12. The first sensor element 20 is provided for detecting the angular acceleration about the machining axis 30 of the insertion tool 14. The first sensor element 20 is provided for detecting the linear acceleration parallel to the machining axis 30 of the insertion tool 14. The first sensor element 20 is formed by an acceleration sensor. The first sensor element 20 is formed by a triaxial acceleration sensor. However, it is also conceivable that the first sensor element 20 is formed by a MEMS sensor. Alternatively or additionally, the sensor unit 16 for detecting the angular acceleration may also comprise at least one rotation rate sensor.
    The sensor unit 16 includes at least one further sensor element 22, which is provided for detecting at least one further operating and / or environmental parameter of the handheld power tool device 10. The further sensor element 22 of the sensor unit 16 is provided to detect an environmental parameter of the percussion unit 12. The further sensor element 22 of the sensor unit 16 is provided for detecting an ambient air pressure of the percussion unit 12. The further sensor element 22 of the sensor unit 16 is formed by a pressure sensor.
    The hand-held power tool device 10 comprises the hammer mechanism unit 12, a shock detection unit 32 which is provided to detect a translatory drive state of the insertion tool 14 by the hammer mechanism unit 12, and a lock detection unit 34 which is provided, an angular acceleration of the power tool 36 about the machining axis 30th the insertion tool 14 and the percussion unit 12 to capture. The impact detection unit 32 is provided to detect a linear acceleration that is parallel to a machining axis 30 of the insertion tool 14. The impact detection unit 32 includes a sensor element 20, which is provided for detecting the translational drive state of the insertion tool 14. The sensor element 20 is provided for detecting the linear acceleration in the axial direction 50 in the Hammerbetriebszu-stand and in the Schlagbohrbetriebszustand. The blockage recognition unit 34 forms an anti-rotation system. The blockage recognition unit 34 comprises a sensor element 20, which is provided for the detection of the angular acceleration. The impact detection unit 32 and the blockage detection unit 34 of the handheld power tool device 10 are formed at least partially in one piece. The impact detection unit 32 and the blockage detection unit 34 are at least partially formed integrally with the sensor unit 16. The impact detection unit 32 comprises the first sensor element 20 of the sensor unit 16. The blockage detection unit 34 likewise comprises the first sensor element 20 of the sensor unit 16.
    The handheld power tool device 10 further has a control and / or regulating unit 18, which is provided for controlling and / or regulating the impact mechanism unit 12 as a function of the operating and / or environmental parameter detected by the sensor unit 16. The control and / or regulating unit 18 is provided for controlling and / or regulating the percussion unit 12 as a function of the spatial position of the percussion unit 12, the linear acceleration and / or the angular acceleration. The control and / or regulating unit 18 is designed as a control unit 52 and is provided for controlling the striking mechanism unit 12 via the drive unit 46. Alternatively or additionally, it is also conceivable that the control and / or regulating unit 18 is designed as a control unit and is provided for a regulation of the hammer mechanism unit 12. The control unit 52 is provided for controlling the percussion unit 12 in dependence on the operating parameters detected by the first sensor element 20 of the sensor unit 16. The control unit 52 is also provided for controlling the percussion unit 12 as a function of the environmental parameter detected by the further sensor element 22 of the sensor unit 16. Alternatively or additionally, it is also conceivable for the control unit 52 to be provided for manual control, for example by means of an operator-actuatable adjustment knob or dial.
    The control unit 52 comprises a microcontroller. The control unit 52 is electronically coupled to the sensor unit 16. The parameters detected by the sensor elements 20, 22 of the sensor unit 16 are forwarded to the control unit 52. The control unit 52 evaluates the parameters detected by the sensor unit 16, compares the parameters detected by the sensor unit 16 with predetermined limit values stored in the control unit 52, and controls the percussion unit 12 according to a control algorithm stored in the control unit 52. If the detected parameters reach or exceed a predetermined maximum value and / or if the detected parameters reach or fall below a predefined minimum value, the control unit 52 changes an output control parameter which is forwarded to the drive unit 46 or to the percussion unit 12.
    The weight force acting on the movably mounted components of the percussion unit 12, affects the operation of the percussion unit 12. In the space position in which the machining axis 30 of the insertion tool 14 is arranged parallel to the direction of the weight and a transmission direction of the pulse from the striker to the insert tool 14 in the hammer operating state or in the Schlagbohrbetriebszustand the effective direction of the gravitational force, the moving components of the percussion unit 12 are accelerated against the weight. On the other hand, the movable members of the percussion mechanism unit 12 in the space position in which the processing axis 30 of the insertion tool 14 parallel to the effective direction of the weight and the transmission direction of the pulse from the striker to the insert tool 14 in the hammer operating state or in the Schlagbohrbetriebszustand the effective direction of the weight force rectified is additionally accelerated by the weight. In the spatial position in which the machining axis 30 of the insert tool 14 is arranged perpendicular to the effective direction of the weight force, the weight force affects the movable components of the percussion unit 12 comparatively only insignificantly. The intermediate spatial positions in which the machining axis 30 of the insertion tool 14 and the effective direction of the weight include an angle which is between 0 0 and 90 °, the output control parameters must be adjusted by the control unit 52 accordingly. The output control parameters are from a speed or torque of the drive unit 46 or others
    Professional formed as meaningful parameters appear. As a result, an optimal processing result can be achieved in any spatial position.
    The control unit 52 is further provided for a shutdown of the drive unit 46 and thus the percussion unit 12 in the Schlagbohrbetriebszustand or in Bohrbetriebszustand when the detected by the blocking detection unit 34 and the first sensor element 20 of the sensor unit 16 angular acceleration reaches or exceeds a predetermined maximum value. High angular acceleration about the machining axis 30 of the insert tool 14 in the hammering operating state or in the drilling operating state may indicate an uncontrolled stalling event in which the deployment tool 14 is blocked and the rotational motion is transmitted to the handheld power tool 36. By switching off the drive unit 46 and thus the percussion unit 12 in this uncontrolled blocking case, an advantageously high operator safety can be achieved. The first sensor element 20, which is formed by the three-axis acceleration sensor, detects the angular acceleration over two of the three measuring axes. The three measuring axes of the three-axis acceleration sensor are each arranged perpendicular to each other. The two measuring axes of the three-axis acceleration sensor, which are provided for detecting the angular acceleration about the machining axis 30 of the insert tool 14, are arranged perpendicular to the machining axis 30 of the insert tool 14.
    The impact detection unit 32 or the first sensor element 20 of the sensor unit 16, which is formed by the three-axis acceleration sensor, detects the linear acceleration over the measuring axis of the three-axis acceleration sensor which is parallel to the machining axis 30 of the insert tool 14 and perpendicular to the other two measuring axes of the three-axis acceleration sensor , which are arranged to detect the angular acceleration about the machining axis 30 of the insert tool 14 is arranged. The three-axis acceleration sensor records the spatial position with all three measuring axes.
    The handheld power tool device 10 also has an output unit 24, which is provided for a perceptible by the operator of the power tool 36 output of the at least one operating and / or environmental parameter. The output unit 24 is electronically coupled to the control unit 52 and thus also to the sensor unit 16. The output unit 24 is provided for outputting the spatial position detected by the first sensor element 20 of the sensor unit 16. The output unit 24 is provided for a visual output of the detected spatial position. Alternatively or additionally, an acoustic, a haptic and / or another output that appears appropriate to a person skilled in the art is also conceivable. In addition, it is also conceivable that the output unit 24 is provided for outputting the detected angular acceleration, the detected linear acceleration and / or another parameter which appears expedient to a person skilled in the art. The output unit 24 includes a display. However, it is also conceivable that the output unit 24 comprises, alternatively or additionally, individually arranged LEDs, a loudspeaker or other output elements which appear expedient to a person skilled in the art. The output unit 24 is embedded in the housing 48 of the power tool 36. The output unit 24 can be provided to assist an operator by outputting the current spatial position in a targeted orientation of the power tool 36, such as in a horizontal or in a vertical position. For example, on the display of the dispensing unit 24, arrows may be displayed which indicate to an operator in which direction he must turn or tilt the hand tool 36 about the horizontal or vertical position of the machining axis 30 of the insert tool 14 or otherwise useful to one skilled in the art to reach the apparent position. Thus, by means of the sensor unit 16, the control unit 52 and the output unit 24, a vertical and / or horizontal drilling function can be achieved.
    The handheld power tool device 10 further has an interface unit 26, which is provided for exchanging an operating and / or environmental parameter data record with an external information unit 28. The external information unit 28 can be coupled to the handheld power tool device 10 of the handheld power tool 36 via the interface unit 26. In a coupled state of the handheld power tool device 10 of the handheld power tool 36 with the external information unit 28, the operating and / or environmental parameter data set comprising, for example, information on an environment of the handheld power tool 36 having the handheld power tool 10, from the external information unit 28 to the control unit 52 of the power tool device 10 are passed. The external information unit 28 is formed by a smartphone. However, other embodiments of the external information unit 28 which appear sensible to a person skilled in the art are also conceivable. The external information unit 28 is connected via a cable, not shown, in particular via a
    Data cable, connected to the power tool device 10 of the power tool 36. The interface unit 26 has a connector element, not shown in detail, in particular a USB slot, which is embedded in the housing 48 of the power tool 36. However, it is also conceivable that the external information unit 28, in particular contactless, is connected to the handheld power tool device 10 of the handheld power tool 36 via a radio signal such as Bluetooth, WLAN, IR or another technology that appears appropriate to a person skilled in the art. An operator may, for example, hold his smartphone forming the external information unit 28 against an inclined wall surface such as a roof slope to be worked with the portable power tool 36 so as to detect an inclination of the wall surface. For this purpose, the external information unit 28 may have an app or another program. The detected inclination of the wall surface to be processed can then or at the same time be forwarded via the interface unit 26 to the handheld power tool device 10 of the hand tool 36, where the control unit 52 their output control parameters, especially for the vertical and / or horizontal drilling function, on this detected inclination of the wall surface to be processed adapts.
    权利要求:
    Claims (8)
    [1]
    Claims 1. A hand tool machine apparatus comprising a percussion unit (12), which is intended in particular for generating a pulse on an insert tool (14), and a sensor unit (16) which at least partially detects at least one operation - And / or environmental parameters is provided, characterized in that the sensor unit (16) comprises at least one sensor element (20) which is at least partially provided for detecting a spatial position of the hammer mechanism unit (12).
    [2]
    2. Hand tool device according to claim 1, characterized in that the at least one sensor element (20) of the sensor unit (16) is at least partially formed by an acceleration sensor.
    [3]
    3. Hand tool device according to one of the preceding claims, characterized in that the sensor unit (16) comprises at least one further sensor element (22) which is at least partially formed by a pressure sensor and which at least partially provided for detecting an ambient air pressure of the percussion unit (12) is.
    [4]
    4. Hand tool device according to one of the preceding claims, characterized by at least one output unit (24) which is provided to a perceptible by an operator output of the at least one sensor element (20) detected spatial position of the percussion unit (12).
    [5]
    5. Hand tool device according to one of the preceding claims, characterized by at least one interface unit (26) which is at least partially provided for an exchange of an operating and / or environmental parameter data set with an external information unit (28).
    [6]
    6. Hand tool device according to one of the preceding claims, characterized in that the at least one sensor element (20) of the sensor unit (16) at least partially for detecting an angular acceleration, in particular about a machining axis (30) of the insert tool (14), and / or a Linear acceleration, which runs at least substantially parallel to the machining axis (30) of the insert tool (14) is provided.
    [7]
    7. Hand tool with at least one hand tool device (10) according to one of the preceding claims.
    [8]
    8. Sensor unit of a handheld power tool device (10) according to one of claims 1 to 6. 6 June 2014

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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102013212635.2A|DE102013212635A1|2013-06-28|2013-06-28|Hand machine tool device|
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