EP3735338B1 - Dispositif de machine-outil - Google Patents

Dispositif de machine-outil Download PDF

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Publication number
EP3735338B1
EP3735338B1 EP18826271.1A EP18826271A EP3735338B1 EP 3735338 B1 EP3735338 B1 EP 3735338B1 EP 18826271 A EP18826271 A EP 18826271A EP 3735338 B1 EP3735338 B1 EP 3735338B1
Authority
EP
European Patent Office
Prior art keywords
unit
switching element
signal switching
locking
machine tool
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18826271.1A
Other languages
German (de)
English (en)
Other versions
EP3735338A1 (fr
Inventor
Bastian Keller
Hardy Schmid
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP3735338A1 publication Critical patent/EP3735338A1/fr
Application granted granted Critical
Publication of EP3735338B1 publication Critical patent/EP3735338B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D16/00—Portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D16/006—Mode changers; Mechanisms connected thereto
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D2216/0007—Details of percussion or rotation modes
    • B25D2216/0015—Tools having a percussion-only mode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D2216/0007—Details of percussion or rotation modes
    • B25D2216/0023—Tools having a percussion-and-rotation mode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D2216/0007—Details of percussion or rotation modes
    • B25D2216/0038—Tools having a rotation-only mode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/221—Sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/255—Switches
    • B25D2250/261—Means for locking an operative switch on

Definitions

  • a machine tool device in particular for hand-held power tools, with at least one signal switching unit which has at least one signal switching element which can be actuated at least to activate a drive unit of a machine tool, with at least one operating mode selection unit which has at least one operating mode selection element which can be actuated to select an operating mode of the drive unit has, and has been proposed with at least one locking unit, which has at least one locking actuation element at least for locking the signal switching element.
  • a machine tool device according to the preamble of claim 1 is made EP1695795A1 known.
  • the invention is based on a machine tool device, in particular for hand-held power tools, with at least one signal switching unit which has at least one signal switching element which can be actuated at least to activate a drive unit of a machine tool, with at least one operating mode selection unit which has at least one operating mode selection unit for the drive unit having an actuatable operating mode selection element, and having at least one locking unit, which has at least one locking actuating element at least for locking the signal switching element.
  • the machine tool device comprises at least one electronics unit which is provided for controlling and/or regulating the drive unit at least as a function of an evaluation of a position parameter of the locking actuation element.
  • the power tool device is designed in particular as a hand-held power tool device, preferably as an electric hand-held power tool device.
  • the power tool device is intended for use in a hand power tool, preferably in an electric hand power tool and particularly preferably in a rotary and/or chisel hammer.
  • the signal switching element is preferably arranged on a housing unit of the hand-held power tool.
  • the signal switching element can be movably mounted.
  • the signal switching element is preferably designed as a push button switch, as a slide switch, as a toggle switch, as a sensor switch or as another signal switching element that appears sensible to a person skilled in the art.
  • at least two different position parameters of the signal switching element can be set by actuating the signal switching element.
  • the position parameter of the signal switching element can be designed in particular as a physical position of the signal switching element, in particular relative to the housing unit, as an electrical and/or electronic signal about an actuation state of the signal switching element or as another position parameter of the signal switching element that appears reasonable to a person skilled in the art.
  • the drive unit in particular at least one electric motor of the drive unit, of the machine tool is preferably controlled and/or regulated, in particular activated, by the electronics unit depending on an evaluation of the position parameter.
  • the signal switching unit preferably provides the electronics unit with the position parameter of the signal switching element in the form of an electrical or electronic signal.
  • the electronics unit preferably has at least one electrical switching element, such as a semiconductor switch or the like, for controlling and/or regulating the drive unit, in particular using the position parameter of the signal switching element.
  • An “electronics unit” is to be understood in particular as meaning a unit with at least one electronic control system.
  • a “electronic control system” is intended in particular to mean a unit with a processor unit and with a memory unit as well as with an operating program stored in the memory unit.
  • the operating mode selection element is preferably arranged on the housing unit of the handheld power tool.
  • the operating mode selection element can be movably, preferably rotatably, mounted.
  • the operating mode selection element is preferably designed as a selection wheel, as a slide switch, as a toggle switch, as a sensor selection element or as another operating mode selection element that appears sensible to a person skilled in the art.
  • different physical positions of the operating mode selection element, in particular relative to the housing unit, and/or different actuation states of the operating mode selection element are assigned to different operating modes of the drive unit, in particular a percussion mechanism of the drive unit.
  • the hammer mechanism of the drive unit is driven by the electric motor of the drive unit.
  • the hammer mechanism of the drive unit drives an insert tool of the machine tool.
  • the hammer mechanism of the drive unit preferably has at least two different operating modes.
  • an impact mechanism of a drive unit of a hammer drill and/or chisel hammer has at least one hammer drill operating mode and at least one hammer chisel operating mode.
  • an application tool of the rotary and/or chisel hammer such as a drill or the like, is caused by the percussion mechanism of the drive unit to perform a translational movement at least essentially parallel to a main direction of extension of the application tool and at the same time a rotational movement driven around the main extension direction of the application tool.
  • the tool insert is preferably driven in a translatory manner at least essentially in a non-rotating manner along the main direction of extension of the tool insert by the percussion mechanism of the drive unit.
  • a "main extension direction" of an object is to be understood here in particular as a direction which runs parallel to a longest edge of a smallest geometric cuboid which just about completely encloses the object.
  • the electronics unit is preferably provided for controlling and/or regulating the drive unit, in particular the hammer mechanism of the drive unit, depending on an evaluation of a selected operating mode.
  • the operating mode selection unit provides the electronics unit with the selected operating mode in the form of an electrical or electronic signal.
  • Provided should be understood to mean, in particular, specially programmed, designed and/or equipped.
  • the fact that an object is provided for a specific function is to be understood in particular to mean that the object fulfills and/or executes this specific function in at least one application and/or operating state.
  • the locking actuation element is preferably arranged on the housing unit of the hand-held power tool.
  • the locking actuation element can be movably mounted.
  • the locking actuation element is preferably designed as a push button switch, as a slide switch, as a toggle switch, as a sensor element or as another locking actuation element that appears sensible to a person skilled in the art.
  • the locking actuation element is preferably provided for locking the signal switching element mechanically, in particular for a non-positive and/or positive locking.
  • the locking actuation element preferably a locking extension of the locking actuation element, can engage in a locking recess of the signal switching element to lock the signal switching element and in particular mechanically lock the signal switching element.
  • a movement of a locked signal switching element is preferably at least essentially blocked.
  • the locking unit is provided to electronically maintain an operating state of the drive unit, in particular the electric motor of the drive unit, set by actuating the signal switching element, preferably independently of a position of the signal switching element, in particular via the electronics unit.
  • the position parameter of the locking actuation element can in particular be embodied as a physical position of the locking actuation element, in particular relative to the housing unit, as an electrical and/or electronic signal about an actuation state of the locking actuation element, or as another position parameter of the locking actuation element that appears reasonable to a person skilled in the art.
  • the locking unit preferably provides the electronics unit with the position parameter of the locking actuation element in the form of an electrical or electronic signal.
  • the electronic unit is preferably dependent on a control and/or regulation of the drive unit provided by an evaluation of the position parameter of the locking actuation element, the selected operating mode and the position parameter of the signal switching element.
  • the electronics unit activates the drive unit when there is a position parameter of the signal switching element which is assigned to an activation of the drive unit, in particular the electric motor of the drive unit intended.
  • An operating state of the drive unit, in particular of the electric motor of the drive unit, to be set is preferably stored in the storage unit of the electronics unit for each combination of the position parameter of the locking actuation element, the selected operating mode and the position parameter of the signal switching element.
  • the electronic unit is activated when the rotary hammer operating mode is selected and if the position parameter of the locking actuation element is assigned to a locking of the signal switching element, to a deactivation of the drive unit intended.
  • a drive unit of a machine tool can advantageously be controlled and/or regulated as a function of an evaluation of a position parameter of a locking actuation element.
  • Complex mechanics between the locking actuation element and a signal switching element can advantageously be dispensed with.
  • a mechanical load on components of a locking unit and a signal switching unit can advantageously be reduced and an advantageously durable machine tool device can be provided.
  • An advantageously inexpensive and compact machine tool device can be provided.
  • the locking unit has at least one locking switch element which is operatively connected to the locking actuation element and which is provided to provide the electronic unit with the position parameter of the locking actuation element.
  • a mechanical locking actuator preferably via a locking mechanism with which Locking switching element operatively connected.
  • the locking switching element is preferably electrically conductively connected to the electronics unit.
  • the locking switch element is preferably provided, depending on the position of the locking actuation element, to close or open an electrical circuit with the electronics unit. In particular, depending on the position of the locking actuation element, an electric current flow to the electronics unit takes place or an electric current flow to the electronics unit is interrupted.
  • the locking switch element preferably provides the electronics unit with the position parameter of the locking actuation element in the form of an electrical signal.
  • actuation of the locking actuation element exerts a force on the locking switching element, as a result of which the electrical circuit with the electronic unit is preferably closed or opened by the locking switching element.
  • An operative connection between the locking actuation element and the locking switching element is preferably designed such that when the locking actuation element is actuated to lock the signal switching element, the circuit with the electronic unit is closed by the locking switching element.
  • the operative connection between the locking actuation element and the locking switching element is preferably designed in such a way that when the locking actuation element is actuated to detent the signal switching element, the circuit with the electronics unit is opened by the locking switching element.
  • the operative connection between the locking actuation element and the locking switching element is designed such that when the locking actuation element is actuated to lock the signal switching element, the circuit with the electronic unit is opened by the locking switch element and that when the locking actuation element is actuated the signal switching element is unlocked the circuit with the electronics unit is closed by the locking switching element.
  • the electronic unit can be provided with the position parameter of the locking actuation element in the form of an electrical signal. Complex mechanics for providing the position parameter can advantageously be dispensed with. A durable and cost-effective machine tool device can advantageously be provided.
  • the operating mode selection unit has at least one operating mode switching element that is operatively connected to the operating mode selection element and is intended to provide the electronic unit with a signal about the selected operating mode.
  • a mechanical operating mode selection element is operatively connected to the operating mode switching element.
  • the operating mode switching element is preferably provided to provide the electronics unit with an electrical signal about the selected operating mode.
  • the operating mode switching element is preferably electrically conductively connected to the electronics unit.
  • the operating mode switching element can preferably be designed as a switch, in particular in the case of only two operating modes that can be selected by means of the operating mode actuating element.
  • the operating mode switching element can preferably be designed as a switch with a number of switching positions, as a potentiometer or as another operating mode switching element that appears sensible to a person skilled in the art.
  • An operative connection between the operating mode selection element and the operating mode switching element is preferably designed such that depending on a position of the operating mode selection element corresponding to a selected operating mode, different electric currents flow through the operating mode switching element to the electronics unit.
  • Complex mechanics for providing a signal via a selected operating mode can advantageously be dispensed with.
  • a durable and cost-effective machine tool device can advantageously be provided.
  • the signal switching unit is provided for providing a position parameter of the signal switching element for switching electrical currents with electrical current intensities of less than or equal to 500 mA.
  • the signal switching unit preferably has a signal switching contact, in particular one that is operatively connected to the signal switching element.
  • the signal switching contact is preferably electrically conductively connected to the electronics unit.
  • the signal switching contact is provided to provide the electronics unit with the position parameter of the signal switching element in the form of an electrical signal.
  • An operative connection between the signal switching element and the signal switching contact is preferably designed such that that depending on a position of the signal switching element, an electrical circuit with the electronics unit is opened or closed by the signal switching contact.
  • the electrical switching element of the electronics unit is designed in such a way that electrical currents with electrical current intensities of at most 500 mA can be detected by the electrical switching element, in particular to activate or deactivate the drive unit, in particular the electric motor of the drive unit.
  • the signal switching unit does not need to carry and/or switch electrical current according to the output of the drive unit, in particular the electric motor of the drive unit.
  • the locking unit is provided for locking the signal switching element in an unactuated state of the signal switching element.
  • the locking actuation element is preferably provided to mechanically block the signal switching element when the signal switching element is in an unactuated state.
  • actuation of the signal switching element is prevented by a mechanical blocking of the signal switching element.
  • the locking unit is provided to electronically maintain a deactivation of the drive unit set by an unactuated switching element, preferably independently of a position of the signal switching element, in particular via the electronic unit. Unintentional starting of a machine tool can advantageously be prevented.
  • a separate locking element for locking the signal switching element in an unactuated state of the signal switching element can be dispensed with.
  • a user-safe and compact machine tool device can advantageously be provided.
  • the signal switching element can only be unlocked by means of the locking unit.
  • the signal switching element can be unlocked by actuating the locking actuation element.
  • the locking unit is intended to maintain a locking of the signal switching element independently of an actuation of the signal switching element. Unintentional locking of the signal switching element, in particular due to accidental actuation of the signal switching element, can advantageously be at least essentially avoided.
  • a user-safe machine tool device can advantageously be provided.
  • the locking unit is designed as a bistable locking unit.
  • the locking unit has a bistable locking mechanism.
  • the bistable locking mechanism is preferably connected to the, in particular mechanical, locking actuating element and to the locking switching element.
  • the bistable locking mechanism has exactly two stable states.
  • a first stable state of the bistable locking mechanism preferably corresponds to a locking of the signal switching element.
  • a second stable state of the bistable locking mechanism preferably corresponds to a de-locking of the signal switching element.
  • the bistable locking mechanism can change from one of the two stable states to another of the two stable states by actuating the locking actuation element.
  • the bistable locking mechanism can preferably be designed as a ballpoint pen mechanism, as a bistable sliding mechanism, as a bistable seesaw mechanism or as another bistable locking mechanism that appears sensible to a person skilled in the art.
  • a locking or de-locking of the signal switching element can be retained even if the locking actuation element is released after actuation.
  • a machine tool device that is user-safe and easy to use can advantageously be provided.
  • the locking unit is provided for maintaining the locking of the signal switching element, regardless of the operating mode.
  • the locking unit is provided for maintaining the, in particular mechanical, locking of the signal switching element when the rotary hammer operating mode is selected.
  • the electronics unit is provided to the drive unit depending on an evaluation of the position parameter of the signal switching element, the selected operating mode and to control and/or regulate the position parameter of the locking actuation element.
  • the electronics unit is intended to deactivate the drive unit when the rotary hammer operating mode is selected and the signal switching element is locked.
  • a mechanical detent of the signal switching element can advantageously be dispensed with, even when the rotary hammer operating mode is selected.
  • complex mechanics for automatic detent of the signal switching element can be dispensed with.
  • An inexpensive machine tool device can advantageously be provided.
  • the signal switching unit has at least one speed sensor unit, which is operatively connected to the signal switching element, for regulating a speed of the drive unit.
  • the speed sensor unit is provided for regulating a speed of the electric motor of the drive unit.
  • the speed sensor unit can preferably be designed as a potentiometer or as another speed sensor unit that appears sensible to a person skilled in the art.
  • the speed sensor unit is preferably mechanically operatively connected to the signal switching element.
  • the signal switching element is designed as a sensor switching element or the like, for the speed sensor unit to be electrically or electronically operatively connected to the signal switching element.
  • the speed transmitter unit is preferably electrically conductively connected to the electronics unit.
  • an operative connection between the signal switching element and the speed sensor unit is designed in such a way that the speed sensor unit of the electronics unit transmits an electrical signal, such as an electrical voltage, an electrical current or the like, depending on a position of the signal switching element, preferably proportional to a position of the signal switching element ., provides.
  • an electrical signal such as an electrical voltage, an electrical current or the like
  • Different electrical signals are preferably assigned to different speeds of the drive unit, in particular of the electric motor of the drive unit.
  • the locking unit can preferably be designed in such a way that the signal switching element can be locked in different positions corresponding to different speeds of the drive unit, in particular of the electric motor of the drive unit.
  • a machine tool device with an accelerator function can advantageously be provided by means of a lockable signal switching element.
  • the invention is based on a machine tool, in particular a hand-held machine tool, with at least one machine tool device according to the invention.
  • the machine tool can preferably be operated with electrical energy.
  • the machine tool has the drive unit, which preferably includes at least one electric motor and a percussion mechanism.
  • the machine tool preferably comprises further components, in particular those required for operation of the machine tool.
  • the machine tool can include at least one energy supply unit, such as a battery, a power cable or the like, a tool chuck, a housing and/or other components that appear useful to a person skilled in the art.
  • the machine tool has a mass that is less than 40 kg, preferably less than 10 kg and particularly preferably less than 5 kg.
  • the machine tool is preferably designed as a rotary and/or chisel hammer.
  • the machine tool it is conceivable for the machine tool to be in the form of a jigsaw, a drill, an angle grinder or another machine tool that a person skilled in the art deems appropriate.
  • a durable, compact, inexpensive and/or user-safe machine tool can advantageously be provided.
  • the machine tool device according to the invention and/or the machine tool according to the invention should/should not be limited to the application and embodiment described above.
  • the machine tool device according to the invention and/or the machine tool according to the invention can/can have a number of individual elements, components and units that differs from a number specified here in order to fulfill a function described herein.
  • values lying within the specified limits should also be considered disclosed and can be used as desired.
  • FIG 1 shows a machine tool 18 in a schematic representation.
  • the machine tool 18 is designed as a hand-held machine tool.
  • the machine tool 18 is designed as a rotary and/or chipping hammer.
  • the Machine tool 18 has a housing unit 36 .
  • the machine tool 18 has a drive unit 16 .
  • the drive unit 16 is arranged within the housing unit 36 .
  • the drive unit 16 includes an electric motor and an impact mechanism.
  • the drive unit 16 is provided to drive an insert tool 38 of the machine tool 18 .
  • the insertion tool 38 is designed as a drill.
  • the machine tool 18 includes a machine tool device 10.
  • the machine tool device 10 includes a signal switching unit 12.
  • the signal switching unit 12 has a signal switching element 14.
  • the signal switching element 14 can be actuated to activate the drive unit 16 of the machine tool 18 .
  • the signal switching element 14 can be actuated to activate the electric motor of the drive unit 16 of the machine tool 18 .
  • the signal switching element 14 is arranged on a handle 40 of the machine tool 18 .
  • the signal switching element 14 is designed as a push button switch.
  • the machine tool device 10 includes an operating mode selection unit 20.
  • the operating mode selection unit 20 has an operating mode selection element 22.
  • the operating mode selection element 22 can be actuated to select an operating mode of the drive unit 16 .
  • the operating mode selection element 22 can be actuated to select an operating mode of the hammer mechanism of the drive unit 16 .
  • the operating mode selection element 22 is arranged on the housing unit 36 .
  • the operating mode selection element 22 is designed as a rotary switch.
  • the operating mode selection unit 20 can be used to switch between a rotary hammer operating mode and a chisel hammer operating mode.
  • the machine tool device 10 comprises a locking unit 24.
  • the locking unit 24 has a locking actuating element 26.
  • the locking actuation element 26 is provided at least for locking the signal switching element 14 .
  • the locking actuation element 26 is arranged on the handle 40 .
  • the locking actuation element 26 is arranged essentially perpendicular to the signal switching element 14 on the handle 40 .
  • the locking operation member 26 is arranged on a side face of the handle 40 . Alternatively, it is conceivable that the locking actuation element 26 is arranged on an upper side of the handle 40 .
  • the expression “essentially perpendicular” is intended here to define in particular an alignment of a direction relative to a reference direction, with the direction and the reference direction, viewed in particular in one plane, enclosing an angle of 90° and the angle has a maximum deviation of, in particular, less than 8 °, beneficial less than 5° and particularly advantageously less than 2°.
  • the locking actuation element 26 is designed as a push button switch.
  • the machine tool device 10 includes an electronics unit 28.
  • the electronics unit 28 is provided for evaluating a position parameter of the locking actuation element 26.
  • the electronics unit 28 is provided for controlling and/or regulating the drive unit 16 at least as a function of the evaluation of the position parameter of the locking actuation element 26 .
  • the electronics unit 28 is provided for controlling and/or regulating the drive unit 16 depending on an evaluation of a position parameter of the signal switching element 14 , a selected operating mode and the position parameter of the locking actuation element 26 .
  • the electronics unit 28 is arranged within the housing unit 36 .
  • FIG 2 shows the machine tool device 10 in a schematic representation.
  • the machine tool device 10 comprises the signal switching unit 12, the operating mode selection unit 20, the locking unit 24 and the electronics unit 28.
  • An energy supply unit 42 of the machine tool 18 is electrically conductively connected to the electronics unit 28.
  • the energy supply unit 42 is designed as a mains supply. Alternatively, it is conceivable that the energy supply unit 42 is designed as an accumulator.
  • the drive unit 16 of the machine tool 18 is electrically conductively connected to the electronics unit 28 .
  • the locking unit 24 has a locking switching element 30 .
  • the locking switching element 30 is operatively connected to the locking actuating element 26 .
  • the locking switching element 30 is mechanically coupled to the locking actuating element 26 .
  • the locking switching element 30 is mechanically coupled to the locking actuating element 26 via a bistable locking mechanism 46 of the locking unit 24 .
  • the locking switching element 30 is designed as an electrical switching contact.
  • the locking switching element 30 is provided to provide the electronics unit 28 with the position parameter of the locking actuating element 26 .
  • the locking switching element 30 is electrically conductively connected to the electronics unit 28 .
  • the locking switching element 30 provides the electronics unit 28 with the position parameter in the form of an electrical signal.
  • the lock actuator 26 and the lock switch 30 are each shown in an unactuated state.
  • the operating mode selection unit 20 has an operating mode switching element 32 .
  • the operating mode switching element 32 is operatively connected to the operating mode selection element 22 .
  • the operating mode switching element 32 is mechanically coupled to the operating mode selection element 22 .
  • the operating mode switching element 32 is designed as an electrical switching contact.
  • the operating mode switching element 32 is intended to provide the electronics unit 28 with a signal about the selected operating mode.
  • the operating mode switching element 32 is electrically conductively connected to the electronics unit 28 .
  • the operating mode switching element 32 provides the electronics unit 28 with an electrical signal about the selected operating mode.
  • the signal switching unit 12 is provided for providing a position parameter of the signal switching element 14 for switching electrical currents with electrical current intensities of less than or equal to 500 mA.
  • the signal switching unit 12 has an electrical signal switching contact 44 .
  • the electrical signal switching contact 44 is operatively connected to the signal switching element 14 .
  • the electrical signal switching contact 44 is mechanically coupled to the signal switching element 14 .
  • the electrical signal switching contact 44 is electrically conductively connected to the electronics unit 28 .
  • the electrical signal switching contact 44 is intended to provide the electronic unit 28 with the position parameter of the signal switching element 14 in the form of an electrical signal.
  • An operative connection between the signal switching element 14 and the electrical signal switching contact 44 is designed in such a way that, depending on a position of the signal switching element 14 , an electrical circuit with the electronics unit 28 is opened or closed by the electrical signal switching contact 44 .
  • an electrical circuit with the electronics unit 28 is closed, only an electrical current with an electrical current intensity of no more than 500 mA flows via the electrical signal switching contact 44.
  • the electronics unit 28 has an electrical switching element, not shown, which the drive unit 16 switches depending on the position parameter of the Signal switching element 14 controls and / or regulates.
  • the electrical switching element of the electronics unit 28 is designed in such a way that electrical currents with electrical current intensities of at most 500 mA can be detected.
  • the signal switching element 14 and the electrical signal switching contact 44 are each shown in an unactuated state.
  • the locking unit 24 is designed as a bistable locking unit.
  • the locking unit 24 has a bistable locking mechanism 46 .
  • the bistable locking mechanism 46 is operatively connected to the locking actuator 26 on a first side 48 of the bistable locking mechanism 46 .
  • the bistable locking mechanism 46 is mechanically coupled to the locking actuator 26 on the first side 48 .
  • the bistable locking mechanism 46 is connected to the locking switch element 30 on a second side 50 of the bistable locking mechanism 46 which faces away from the first side 48 .
  • the locking switching element 30 is arranged on a side of the locking mechanism 46 that is arranged essentially perpendicular to the first side 48 or on the first side 48 .
  • the bistable locking mechanism 46 is mechanically coupled to the locking switch element 30 on the second side 50 .
  • the bistable locking mechanism 46 establishes the operative connection between the locking actuation element 26 and the locking switching element 30 .
  • the bistable locking mechanism 46 has exactly two stable states. A first stable state of the bistable locking mechanism 46 corresponds to a locking of the signal switching element 14. A second stable state of the bistable locking mechanism 46 corresponds to a de-locking of the signal switching element 14.
  • the bistable locking mechanism 46 can be switched from one of the two stable states to another by actuating the locking actuating element 26 of the two stable states change.
  • the bistable locking mechanism 46 is designed as a ballpoint pen mechanism. Alternatively, it is conceivable that the bistable locking mechanism 46 is designed as a bistable sliding mechanism or as a bistable seesaw mechanism.
  • the signal switching unit 12 has a speed sensor unit 34 .
  • the speed sensor unit 34 is operatively connected to the signal switching element 14 .
  • the speed sensor unit 34 is mechanically coupled to the signal switching element 14 .
  • the speed sensor unit 34 is provided for regulating a speed of the drive unit 16 .
  • the speed sensor unit 34 is provided for regulating a speed of the electric motor of the drive unit 16 .
  • the speed sensor unit 34 is electrically conductively connected to the electronics unit 28 .
  • An operative connection between the signal switching element 14 and the speed sensor unit 34 is such formed that the speed sensor unit 34 of the electronic unit 28 depending on a position of the signal switching element 14 provides an electrical signal.
  • the speed sensor unit 34 provides the electronics unit 28 with an electrical signal proportional to a position of the signal switching element 14 .
  • the locking unit 24 is designed such that the signal switching element 14 can be locked in a position of the signal switching element 14 corresponding to a deactivated drive unit 16 and in a position of the signal switching element 14 corresponding to a maximum speed of the electric motor of the drive unit 16 . In principle, however, it is conceivable that the locking unit 24 is designed in such a way that the signal switching element 14 can be locked in a plurality of different positions corresponding to a plurality of different speeds of the electric motor of the drive unit 16 .
  • figure 3 shows a part of the machine tool device 10 with a locked in an actuated state signal switching element 14 in a schematic representation.
  • the actuated state of the signal switching element 14 corresponds to a displacement of the signal switching element 14 along a first direction 52 compared to an unactuated state of the signal switching element 14.
  • the electrical signal switching contact 44 is closed and provides the electronics unit 28, not shown, with the position parameter of the signal switching element 14.
  • the signal switching element 14 is locked by the locking operating element 26 .
  • a latching extension 54 of the locking actuation element 26 engages in a latching recess 56 of the signal switching element 14 .
  • a movement of the signal switching element 14 counter to the first direction 52 is blocked by the locking actuation element 26 .
  • the locking switching element 30 is closed and provides the electronic unit 28 (not shown in more detail) with the position parameter of the locking actuating element 26 .
  • the signal switching element 14 can only be unlocked by means of the locking unit 24 .
  • the signal switching element 14 can be unlocked by actuating the locking actuation element 26 .
  • the latching extension 54 can be moved out of the latching recess 56 counter to a second direction 58 .
  • a movement of the signal switching element 14 counter to the first direction 52 is enabled.
  • the locking unit 24 is independent of the mode of operation Maintaining the locking of the signal switching element 14 is provided.
  • the signal switching element 14 Upon selection of the hammer drill mode, the signal switching element 14 remains in the actuated and locked state.
  • the electronics unit 28 deactivates the drive unit 16 based on the evaluation of the selected operating mode, the position parameter of the signal switching element 14 and the position parameter of the locking actuation element 26.
  • figure 4 shows the part of the machine tool device 10 with a locked in an unactuated state signal switching element 14 in the schematic representation.
  • the electrical signal switching contact 44 is open.
  • the position parameter of the signal switching element 14 is made available to the electronics unit 28 in the form of an electrical zero signal.
  • the locking unit 24 is provided for locking the signal switching element 14 in an unactuated state of the signal switching element 14 .
  • the signal switching element 14 is locked by the locking operating element 26 .
  • the latching extension 54 of the locking actuation element 26 blocks the signal switching element 14. A movement of the signal switching element 14 along the first direction 52 is blocked by the locking actuation element 26.
  • the locking switching element 30 is closed and provides the electronics unit 28 with the position parameter of the locking actuating element 26 .
  • figure 5 12 shows a part of the machine tool device 10 with a signal switching element 14 that is unlocked in a non-actuated state in an alternative schematic representation.
  • the part of the machine tool device 10 is shown in simplified form.
  • the bistable locking mechanism 46, the locking switching element 30, the electrical signal switching contact 44, and the speed sensor unit 34 are not shown for the sake of clarity.
  • the locking actuator 26 of the locking unit 24 is in an unactuated state.
  • the signal switching element 14 of the signal switching unit 12 is freely movable. The signal switching element 14 can be moved along the first direction 52 .
  • figure 6 shows the part of the machine tool device 10 with a locked in an unactuated state signal switching element 14 in the alternative schematic representation.
  • the locking actuator 26 of the locking unit 24 is in an actuated state.
  • the latching extension 54 of the locking actuation element 26 is displaced along the second direction 58 in comparison to an unactuated state of the locking actuation element 26 .
  • a movement of the signal switching element 14 of the signal switching unit 12 along the first direction 52 is blocked by the locking actuation element 26 .
  • figure 7 shows the part of the machine tool device 10 with a signal switching element 14 unlocked in an actuated state in the alternative schematic representation.
  • the locking actuator 26 of the locking unit 24 is in an unactuated state.
  • the signal switching element 14 of the signal switching unit 12 is freely movable. The signal switching element 14 can be moved counter to the first direction 52 .
  • figure 8 shows the part of the machine tool device 10 with a locked in an actuated state signal switching element 14 in the alternative schematic representation.
  • the locking actuation element 26 of the locking unit 24 is in an actuated state.
  • the latching extension 54 of the locking actuation element 26 is displaced along the second direction 58 in comparison to an unactuated state of the locking actuation element 26 .
  • the latching extension 54 engages in the latching recess 56 of the signal switching element 14 of the signal switching unit 12 .
  • a movement of the signal switching element 14 counter to the first direction 52 is blocked by the locking actuation element 26 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)

Claims (8)

  1. Dispositif de machine-outil, en particulier pour des machines-outils portatives, comprenant au moins une unité de commutation de signal (12) qui présente au moins un élément de commutation de signal (14) qui peut être actionné au moins pour une activation d'une unité d'entraînement (16) d'une machine-outil (18), comprenant au moins une unité de sélection de mode de fonctionnement (20) qui présente au moins un élément de sélection de mode de fonctionnement (22) pouvant être actionné pour sélectionner un mode de fonctionnement, y compris un mode de fonctionnement de marteau-perforateur, de l'unité d'entraînement (16), comprenant au moins une unité de blocage (24) qui présente au moins un élément d'actionnement de blocage (26) au moins pour bloquer l'élément de commutation de signal (14), et comprenant au moins une unité électronique (28) qui est prévue pour commander et/ou réguler l'unité d'entraînement (16) au moins en fonction d'une évaluation d'une grandeur caractéristique de position de l'élément d'actionnement de blocage (26), dans lequel l'unité électronique (28) est prévue pour désactiver l'unité d'entraînement (16) lorsque le mode de fonctionnement de marteau-perforateur est sélectionné et l'élément de commutation de signal (14) est bloqué,
    caractérisé en ce que l'unité de blocage (24) est prévue pour bloquer l'élément de commutation de signal (14) dans un état non actionné de l'élément de commutation de signal (14), dans lequel l'unité de blocage (24) est prévue indépendamment du mode de fonctionnement pour maintenir le blocage de l'élément de commutation de signal (14).
  2. Dispositif de machine-outil selon la revendication 1, caractérisé en ce que l'unité de blocage (24) présente au moins un élément de commutation de blocage (30) en relation fonctionnelle avec l'élément d'actionnement de blocage (26) qui est prévu pour fournir à l'unité électronique (28) la grandeur caractéristique de position de l'élément d'actionnement de blocage (26).
  3. Dispositif de machine-outil selon la revendication 1 ou 2, caractérisé en ce que l'unité de sélection de mode de fonctionnement (20) présente au moins un élément de commutation de mode de fonctionnement (32) en relation fonctionnelle avec l'élément de sélection de mode de fonctionnement (22) et qui est prévu pour fournir à l'unité électronique (28) un signal concernant le mode de fonctionnement sélectionné.
  4. Dispositif de machine-outil selon l'une quelconque des revendications précédentes, caractérisé en ce que l'unité de commutation de signal (12) est prévue pour fournir une grandeur caractéristique de position de l'élément de commutation de signal (14) pour commuter des courants électriques ayant des intensités de courant électrique inférieures ou égales à 500 mA.
  5. Dispositif de machine-outil selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément de commutation de signal (14) ne peut être débloqué qu'au moyen de l'unité de blocage (24).
  6. Dispositif de machine-outil selon l'une quelconque des revendications précédentes, caractérisé en ce que l'unité de blocage (24) est réalisée comme une unité de blocage bistable.
  7. Dispositif de machine-outil selon l'une quelconque des revendications précédentes, caractérisé en ce que l'unité de commutation de signal (12) présente au moins une unité d'indication de vitesse (34) en relation fonctionnelle avec l'élément de commutation de signal (14) pour réguler une vitesse de rotation de l'unité d'entraînement (16).
  8. Machine-outil, en particulier machine-outil portative, comprenant au moins un dispositif de machine-outil (10) selon l'une quelconque des revendications précédentes.
EP18826271.1A 2018-01-04 2018-12-17 Dispositif de machine-outil Active EP3735338B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018200082.4A DE102018200082A1 (de) 2018-01-04 2018-01-04 Werkzeugmaschinenvorrichtung
PCT/EP2018/085136 WO2019134810A1 (fr) 2018-01-04 2018-12-17 Dispositif de machine-outil

Publications (2)

Publication Number Publication Date
EP3735338A1 EP3735338A1 (fr) 2020-11-11
EP3735338B1 true EP3735338B1 (fr) 2023-05-03

Family

ID=64899297

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Application Number Title Priority Date Filing Date
EP18826271.1A Active EP3735338B1 (fr) 2018-01-04 2018-12-17 Dispositif de machine-outil

Country Status (5)

Country Link
US (1) US20200346337A1 (fr)
EP (1) EP3735338B1 (fr)
CN (1) CN111542417A (fr)
DE (1) DE102018200082A1 (fr)
WO (1) WO2019134810A1 (fr)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0871934A (ja) * 1994-08-30 1996-03-19 Max Co Ltd ネジ締め機におけるスイッチのロック機構
DE10309703A1 (de) * 2003-03-06 2004-09-23 Metabowerke Gmbh Elektrohandwerkzeuggerät mit Diebstahlschutzeinrichtung und Verfahren zum Betreiben eines solchen Elektrohandwerkzeuggeräts
DE602004010123T2 (de) * 2004-09-22 2008-09-11 Black & Decker Inc., Newark Verriegelbare Drucktaste für einen Bohrhammer
GB0503558D0 (en) * 2005-02-22 2005-03-30 Black & Decker Inc Actuation apparatus for power tool
GB0503784D0 (en) * 2005-02-24 2005-03-30 Black & Decker Inc Hammer drill
DE102014202585A1 (de) * 2013-04-29 2014-10-30 Robert Bosch Gmbh Handwerkzeugbedieneinheit
DE102015214368A1 (de) * 2014-12-09 2016-06-09 Robert Bosch Gmbh Werkzeugmaschinenbedienvorrichtung
DE102015222152A1 (de) * 2015-11-11 2017-05-11 Robert Bosch Gmbh Elektrohandwerkzeugmaschine
DE102015226440A1 (de) * 2015-12-22 2017-06-22 Robert Bosch Gmbh Handwerkzeugmaschinenvorrichtung
EP3222389A1 (fr) * 2016-03-21 2017-09-27 HILTI Aktiengesellschaft Machine-outil electrique portative
DE102016210937A1 (de) * 2016-06-20 2017-12-21 Robert Bosch Gmbh Handwerkzeugmaschine

Also Published As

Publication number Publication date
WO2019134810A1 (fr) 2019-07-11
EP3735338A1 (fr) 2020-11-11
DE102018200082A1 (de) 2019-07-04
CN111542417A (zh) 2020-08-14
US20200346337A1 (en) 2020-11-05

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