EP3659754A1 - Machine-outil manuelle - Google Patents

Machine-outil manuelle Download PDF

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Publication number
EP3659754A1
EP3659754A1 EP19208772.4A EP19208772A EP3659754A1 EP 3659754 A1 EP3659754 A1 EP 3659754A1 EP 19208772 A EP19208772 A EP 19208772A EP 3659754 A1 EP3659754 A1 EP 3659754A1
Authority
EP
European Patent Office
Prior art keywords
blocking
rotation
hand
setting unit
blocking device
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.)
Pending
Application number
EP19208772.4A
Other languages
German (de)
English (en)
Inventor
Florian Bantle
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 EP3659754A1 publication Critical patent/EP3659754A1/fr
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
    • 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
    • B25F5/02—Construction of casings, bodies or handles
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/06—Casing of switch constituted by a handle serving a purpose other than the actuation of the switch, e.g. by the handle of a vacuum cleaner
    • H01H9/063—Casing of switch constituted by a handle serving a purpose other than the actuation of the switch, e.g. by the handle of a vacuum cleaner enclosing a reversing switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/20—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch wherein an auxiliary movement thereof, or of an attachment thereto, is necessary before the main movement is possible or effective, e.g. for unlatching, for coupling

Definitions

  • the present invention relates to a hand tool with the features of the preamble.
  • the present invention is based on a handheld power tool with a drive unit, with a manual switch, the manual switch being designed to control the drive unit, with a direction of rotation setting unit for setting at least one direction of rotation of the drive unit and a blocking device for blocking the direction of rotation setting unit. It is proposed that the hand switch bring the blocking device into a blocking position when actuated.
  • the invention provides a hand-held power tool with which the reliability of the hand-held power tool can be increased by the hand switch, when actuated, bringing the blocking device into the blocking position for blocking the direction of rotation adjustment unit.
  • the blocking device has only one blocking position. This enables the hand switch to move the blocking device into a blocking position safely and reliably when actuated.
  • the hand switch brings the blocking device into the blocking position when actuated.
  • the hand switch actuates the one blocking device for blocking the direction of rotation setting unit.
  • the hand switch brings the one blocking device into one blocking position.
  • the direction of rotation setting unit for an actuation to change the direction of rotation is blocked by a user.
  • the user cannot change the direction of rotation if the blocking device is in the one blocking position.
  • a drive unit of the handheld power tool is put into operation in the blocking position.
  • the reliability of the handheld power tool is increased because only a blocking device with a blocking position is provided. This reduces, in particular minimizes, a number of elements required for blocking the direction of rotation setting unit in comparison to the prior art, and simplifies an embodiment of the manual switch, the blocking device and the direction of rotation setting unit in comparison with the prior art.
  • the robustness of the hand machine tool is increased. This is achieved in that, in the blocking position, the direction of rotation setting unit for changing the direction of rotation is blocked by the blocking device. The direction of rotation of the drive unit can thus only be changed out of operation and outside the blocking position.
  • the manual switch actuates the blocking device essentially radially, it also being conceivable that the manual switch actuates the blocking device essentially axially. It is also possible for the hand switch to pivot the blocking device into the blocking position. It is also conceivable for the person skilled in the art to find the manual switch to be operated.
  • a “hand-held machine tool” is to be understood in particular as a hand-held machine tool, preferably a battery-operated hand machine tool.
  • the handheld power tool can be designed as a screwdriver, a drill screwdriver, an impact screwdriver, a rotary impact screwdriver, a drywall screwdriver or as an angle drill.
  • the hand power tool comprises the drive unit, the hand switch, the direction of rotation setting unit, the blocking device, a main output element and a power supply unit.
  • the drive unit of the hand power tool can also have a gear unit.
  • the gear unit is designed to adapt, in particular to reduce and / or increase, a rotational speed of the engine.
  • the gear unit can be designed as a planetary gear, and it is also conceivable that the planetary gear can be switched.
  • the motor of the hand power tool is designed to provide a torque for driving the main output element.
  • the main output element is designed as a main output shaft.
  • the main output shaft runs essentially parallel to a working direction of the hand machine tool.
  • “essentially parallel” is to be understood to mean an orientation of a direction relative to a reference direction, in particular in a plane.
  • the main output shaft also forms a tool axis.
  • axial is to be understood as essentially parallel to the tool axis
  • radial is to be understood as essentially perpendicular to the tool axis.
  • the hand switch has at least one actuating element.
  • the actuating element is movably mounted relative to the handheld power tool housing and can be actuated by a user in an actuating direction.
  • the user can actuate the actuating element by means of at least one finger in order to control and / or regulate the drive unit of the hand power tool.
  • the actuation direction is relative to the tool axis and, in one embodiment, can be parallel to the tool axis. It is also conceivable that the actuation direction is essentially perpendicular to the tool axis. It is also possible for the hand switch, in particular the actuating element, to be pivoted relative to the tool axis. In addition, further actuation directions that appear to be useful to the person skilled in the art are conceivable.
  • “pivoting”, in particular a “pivoting movement” is to be understood as meaning at least partially rotating at least one component about at least one pivot axis, the at least one pivot axis being decentralized, in particular at the end, on the component which is formed.
  • the direction of rotation setting unit at least sets the direction of rotation of the drive unit.
  • the direction of rotation setting unit is designed to set at least one first direction of rotation and at least one second direction of rotation of the drive unit.
  • the first direction of rotation can be a clockwise direction of rotation
  • the second direction of rotation can be a counterclockwise direction of rotation.
  • the direction of rotation setting unit is provided to set the direction of rotation from the first direction of rotation to the second direction of rotation or vice versa.
  • the first direction of rotation is assigned a first position of the direction of rotation setting unit, so that the user sets the first direction of rotation when the user brings the direction of rotation setting unit into the first position.
  • the second direction of rotation is assigned a second position of the direction of rotation setting unit. When the user moves the rotating direction setting unit to the second position, the second rotating direction is set.
  • the blocking device blocks the direction of rotation setting unit. If the direction of rotation setting unit is blocked, no change, in particular reversal, of the direction of rotation of the drive unit can be carried out by the user.
  • the handheld power tool comprises the energy supply unit for supplying energy to the drive unit, in particular the motor.
  • the handheld power tool is preferably a battery-operated handheld power tool that can be operated by means of at least one rechargeable battery, in particular by means of a handheld power tool battery pack.
  • the at least one energy supply unit then provides the energy by means of the at least one rechargeable battery.
  • a “handheld machine tool battery pack” is understood to mean a combination of at least one battery cell and one battery pack housing.
  • the handheld power tool battery pack is advantageously designed to supply energy to commercially available battery-operated handheld power tools.
  • the at least one battery cell can be designed, for example, as a Lilon battery cell with a nominal voltage of 3.6 V.
  • the at least one rechargeable battery can be arranged fixed to the housing essentially within the handheld power tool housing, in particular attached, very particularly mounted.
  • the at least one battery can be designed as an exchangeable battery, in particular as an exchangeable battery pack.
  • the hand-held power tool can be a mains-operated hand-held power tool, which can be connected to an external mains socket by means of a power supply cable.
  • the external mains socket can provide a voltage of, for example, 100 V, 110 V, 120 V, 127 V, 220 V, 230 V or 240 V with 50 Hz or 60 Hz, but also a three-phase AC voltage.
  • a pneumatic power supply unit would also be conceivable.
  • the present invention is not limited to the type of the power supply unit.
  • the hand-held power tool can have a tool holder for connection to an insert tool.
  • the tool holder is assigned to the main output shaft, in particular connected to it, so that the drive of the main output shaft can be transmitted to the tool holder.
  • the insert tool can be designed, for example, in the form of a screwdriver bit, as a HEX drill, as an SDS quick insert tool, as a round shank drill or as a socket wrench.
  • the tool holder can be designed as a polygonal inner holder, in particular a hexagonal inner holder. It is also conceivable that the tool holder is designed as a polygonal outer holder or as a chuck.
  • the blocking device has at least one return element for automatically returning the blocking device from the blocking position to a release position when the hand switch is not actuated.
  • the blocking device releases the direction of rotation setting unit, so that the user can change the direction of rotation of the drive unit.
  • the drive unit is also inoperative in the release position.
  • the return element can essentially axially and / or radially return the blocking device into the release position.
  • the return element into the blocking device Release position pivots. In the unactuated state of the hand switch, the actuating element of the hand switch is not operated by the user.
  • the return element is designed as a spring element.
  • the spring element enables a resilient effect to automatically return the blocking device from the blocking position to the release position as soon as the hand switch is not actuated.
  • the spring element can be assigned to the blocking device, can be arranged on the blocking device or can be connected to at least one element of the blocking device.
  • the spring element can be designed as at least one spiral spring, a spring plate, a leg spring, a compression spring, a tension spring or as a leaf spring.
  • the return element in particular the spring element
  • the blocking device has at least one predetermined buckling element which forms the spring element, so that the return element, in particular the spring element, is formed in one piece with the blocking device.
  • the blocking device forms a latching connection in the blocking position with the direction of rotation setting unit.
  • the latching connection enables the direction of rotation setting unit to be blocked in the blocking position in a particularly reliable manner, so that the direction of rotation setting unit cannot be actuated by the user during operation of the drive unit.
  • the locking device can be used to mechanically block the direction of rotation adjustment unit by means of the latching connection.
  • the blocking device can engage in the direction of rotation setting unit and the mechanical blocking can be produced.
  • at least one element is provided on the blocking device, which engages in at least one element of the direction of rotation setting unit. It is also conceivable that the blocking device engages behind or engages around the direction of rotation setting unit. It is also conceivable that the direction of rotation setting unit engages behind or engages the blocking device, or that the direction of rotation setting unit engages in the blocking device.
  • the direction of rotation setting unit has at least one direction of rotation selection element for selecting the direction of rotation of the drive unit with at least one latching element, the latching element blocking the direction of rotation setting unit with the blocking device in the blocking position.
  • the direction of rotation selection element is designed so that the user can set the direction of rotation, in particular the first and / or second direction of rotation.
  • the first direction of rotation can be set by the user bringing the direction of rotation selection element into the first position, in particular shifting it.
  • the user can set the second direction of rotation by bringing the direction of rotation selection element into the second position, in particular shifting it.
  • the blocking device has only one blocking position.
  • the direction of rotation selection element is designed to be axially displaceable. Furthermore, it is also conceivable that the direction of rotation selection element is designed to be displaceable essentially transversely, in particular radially, to the tool axis. The user can set the direction of rotation using the direction of rotation selection element when the blocking device is in the release position. In the release position, the direction of rotation selection element can be shifted, in particular axially.
  • the direction of rotation selection element has the locking element.
  • the locking element can be formed on the direction of rotation selection element. It is also conceivable that the latching element is integral with the direction of rotation selection element. It is also possible that the locking element is non-positively, positively and / or cohesively with the direction of rotation selection element.
  • the latching element can be designed as at least one latching recess, a latching opening or as a latching web. It is also conceivable that at least two locking elements are provided.
  • the blocking position the blocking device blocks the direction of rotation setting unit by means of the latching element.
  • the blocking device releases the direction of rotation setting unit, in particular the direction of rotation selection element, so that the user can set the first or second direction of rotation.
  • the blocking device has a blocking arm, the blocking arm being designed to form the latching connection with the latching element.
  • the blocking arm can be designed to be movable, so that the manual switch activates the blocking arm in a particularly clever manner can move into the blocking position. In the blocking position, the blocking arm can engage in the catch element of the direction of rotation selection element, reach behind or reach around the catch element.
  • the blocking arm has a blocking hook at a first end and is connected to a handheld power tool housing at a second end.
  • the locking hook is designed such that it engages in the locking element or engages around the locking element when the locking device is in the locking position.
  • the blocking hook forms the locking connection with the locking element.
  • the blocking hook blocks the direction of rotation setting unit, in particular the direction of rotation selection element, in the blocking position in such a way that the user cannot change the direction of rotation.
  • the blocking hook can also be designed as a blocking pin, a blocking web, a blocking rib or as a blocking pawl.
  • the second end of the blocking device is connected to the hand machine tool housing.
  • the connection of the blocking device to the hand tool machine housing can be non-positive, positive and / or material. It is also conceivable that the blocker device is integral with the handheld power tool housing.
  • the hand machine tool housing is a housing of the hand machine tool. Furthermore, the handheld power tool housing accommodates at least the drive unit, the hand switch, the direction of rotation setting unit with the direction of rotation selection element, the blocking device with the feedback element, the main output element and the energy supply unit.
  • the blocking arm is designed as a resilient blocking arm which is fixedly mounted in the handheld power tool housing.
  • the resilient blocking arm is brought into the blocking position.
  • the resilient blocking arm brings the blocking device into the release position.
  • the resilient blocking arm enables the blocking device to be returned, in particular automatically, from the blocking position to the release position.
  • the resilient blocking arm can be designed to be at least partially elastically deformable in order to provide the, in particular automatic, return.
  • the resilient blocking arm is fixed in the hand machine tool housing by means of a free end stored.
  • the resilient blocking arm is preferably fixedly mounted in the handheld power tool housing by means of the second free end.
  • the resilient blocking arm can be firmly mounted in the handheld power tool housing in a form-fitting, force-fitting and / or material-locking manner.
  • the handheld machine tool housing can have a receptacle for receiving the resilient blocking arm.
  • the resilient blocking arm can be integral with the handheld power tool housing.
  • the blocking arm is designed as a rotatably mounted blocking arm and is held in the release position by means of a spring element.
  • the rotatably mounted blocking arm enables holding in the release position when the hand switch is not actuated. If the hand switch is actuated, the rotatably mounted blocking arm is moved from the release position into the blocking position. When the hand switch is not actuated, the rotatably mounted blocking arm is brought from the blocking position into the release position by means of the spring element.
  • the rotatably mounted blocking arm can be rotatably supported on the hand machine tool housing by means of a free end.
  • the rotatably mounted blocking arm is preferably rotatably mounted on the handheld power tool housing by means of the second free end. It is conceivable that the handheld power tool housing has a receptacle for the positive and / or non-positive receptacle of the rotatably mounted blocking arm.
  • the blocking device has a guide device for guiding the blocking device from the release position into the blocking position.
  • the guide device is designed such that when the hand switch, in particular the actuating element, is actuated, it guides the blocking device from the release position into the blocking position.
  • the guide device can essentially guide the blocking device axially or radially. It is also conceivable that the guide device pivots the blocking device from the release position into the blocking position. It is conceivable that the guide device is arranged on the blocking device, is formed on the blocking device or is formed in one piece with it.
  • the guide device has a guide bevel, the guide bevel having at least one guide element of the hand switch cooperates.
  • the guide element of the hand switch can support the guide slope. It is also possible for the guide bevel to bear against the guide element.
  • the guide bevel can be arranged on the blocking device in a force-fitting, form-fitting and / or material-locking manner. It is also conceivable for the guide bevel to be formed on the blocking device, in particular in one piece.
  • the guide slope is shaped such that it receives the guide element.
  • the guide element transmits a force that the user exerts via the actuation of the hand switch to the guide slope. By means of the force, the guide device guides the blocking device from the release position into the blocking position.
  • the guidance of the guide bevel by means of the guide element can be essentially axial or radial, it also being conceivable for the guide element to pivot the guide bevel.
  • the guide element is arranged on the hand switch and can be designed to be non-positive, positive and / or integral. It is also conceivable that the guide element is in one piece with the hand switch.
  • the guide element is designed as a guide edge, and it can also be designed as a guide web or a guide rib.
  • the guide bevel enables safe and reliable guidance of the blocking device from the release position into the blocking position as soon as the guide element guides the guide device.
  • the hand power tool has a locking element which locks the hand switch in a neutral position of the direction of rotation setting unit.
  • the direction of rotation setting unit has the neutral position as a third position next to the first position and the second position.
  • the drive unit has no direction of rotation, so that the drive unit is switched off.
  • the neutral position can be arranged between the setting for the first direction of rotation and the setting for the second direction of rotation, with further arrangements of the neutral position also being conceivable.
  • the locking element can be received by the handheld power tool housing.
  • the locking element is designed in such a way that it locks the manual switch in the neutral position and the manual switch can essentially not be actuated by the user to actuate the hand tool, in particular the drive unit.
  • the blocking element enables the hand switch to be actuated as soon as the first direction of rotation or the second direction of rotation is selected by means of the direction of rotation setting unit has been.
  • the direction of rotation setting unit can have at least three positions in which the user can bring, in particular move, the direction of rotation setting unit, in particular the direction of rotation selection element. It is also conceivable that the direction of rotation setting unit can comprise more than three positions.
  • the direction of rotation setting unit, in particular the direction of rotation selection element can snap into the first, second or third position, so that the direction of rotation setting unit remains in the first, second or third position during use by the user.
  • the blocking element is formed on the direction of rotation setting unit and blocks the manual switch by means of the blocking device.
  • the locking element can be non-positively, positively and / or cohesively connected to the direction of rotation setting unit, it also being conceivable that the locking element is integral with the direction of rotation setting unit. It is also conceivable that the locking element is formed on the direction of rotation selection element, so that the locking element can be axially displaceable.
  • a locked position the locking element locks the hand switch.
  • the direction of rotation adjustment unit is in the neutral position.
  • the blocking device is in the release position. In the neutral position, the manual switch is blocked from being operated by the user and at the same time the direction of rotation setting unit for setting the direction of rotation is released. This enables the handheld power tool, in particular the drive unit, to be put into operation only when the direction of rotation is selected.
  • the locking element can be arranged in the locking element of the direction of rotation selection element.
  • the locking element can be designed as a locking web, a locking rib, a locking projection, a locking recess, a locking opening or as a further form which appears to be useful to the person skilled in the art.
  • the locking element can be arranged between the two locking elements.
  • the locking element can connect the two locking elements to one another. It is conceivable that the locking element and the locking element are formed in one piece.
  • the blocking hook of the blocking device is at least partially supported on the blocking element. It is also conceivable that the blocking hook rests on the locking element in the neutral position.
  • the blocking element can receive the blocking hook, in particular in a form-fitting manner.
  • the guide bevel is also supported on the guide element of the hand switch in such a way that the blocking device blocks the hand switch when it is actuated.
  • the guide slope can also rest on the guide element.
  • the hand power tool has the blocking positions and the blocking position.
  • the blocking position the blocking device blocks the direction of rotation setting unit, in particular the setting of the direction of rotation of the drive unit. This makes it possible that the direction of rotation cannot be changed during the operation of the drive unit.
  • the locking position the locking element locks the hand switch, so that the hand tool, in particular the drive unit, can only be put into operation if the direction of rotation is selected.
  • the blocking device is in the release position.
  • the blocking device comprises at least one blocking element, the guide element actuating the blocking element to guide the blocking device from the release position into the blocking position.
  • the blocking element can be designed as a blocking arm, as a blocking pawl or as a blocking lever.
  • the blocking element can be L-shaped, C-shaped or S-shaped, with other configurations also being conceivable.
  • the blocking element can have the blocking hook at the first end and be connected to the handheld power tool housing at the second end, as described at the beginning.
  • the blocking device has the blocking element as the blocking arm, which is L-shaped.
  • the blocking element has the blocking hook at the first end and is connected to the second end on the handheld power tool housing.
  • the guide slope of the guide device is formed on the blocking element.
  • the return element as a spring element is arranged on the blocking element or is formed on it.
  • the direction of rotation selection element has the latching element and the blocking element, the latching element and the blocking element being integral with the direction of rotation selection element are.
  • the actuating element and the guide element are preferably in one piece with the hand switch.
  • Fig. 1 shows a handheld power tool 100 according to the invention, in which case it is designed as an exemplary cordless screwdriver.
  • the handheld power tool 100 comprises a main output shaft 120 and a tool holder 150.
  • the handheld power tool 100 has a handheld power tool housing 110 with a handle 126.
  • the handheld machine tool housing 110 is T-shaped here, and a pistol-shaped handheld machine tool housing is also conceivable.
  • Handheld power tool 100 is mechanical for a mains-independent power supply and can be electrically connected to a power supply for battery operation, so that handheld power tool 100 is designed as a battery-operated handheld power tool 100.
  • the hand tool machine housing 110 illustratively comprises a drive unit 111.
  • the drive unit 111 further comprises a motor 114 and a gear unit 118.
  • the gear unit 118 can be designed as at least one switchable planetary gear.
  • the gear unit 118 is connected to the motor 114 via a motor shaft 116.
  • the gear unit 118 is provided to convert a rotation of the motor shaft 116 into a rotation between the gear unit 118 and the tool holder 150 via the main output shaft 120.
  • the main output shaft 120 serves as a tool axis 104.
  • a gear housing 119 is assigned to the gear 118.
  • the gear housing 119 is arranged, for example, in the handheld power tool housing 110.
  • a motor housing 113 is also assigned to the motor 114 by way of example. However, it is also conceivable that the motor 114 and the gear unit 118 can be arranged directly in the handheld power tool housing 110 if the handheld power tool 100 is designed in an "open frame" construction.
  • the handheld power tool 100 further comprises a hand switch 130 with a movably mounted actuating element 132 and a signal transmitter element 134.
  • the hand switch 130 can be actuated in an actuating direction 131 which is essentially parallel to the tool axis 104.
  • the hand switch 130 controls the drive unit 111, whereby a user can actuate the actuating element 132.
  • the signaling element 134 is intended to convert the actuation of the actuating element 132 into an electrical signal.
  • Signaling element 134 further transmits the electrical signal to a control unit 102, see also Fig. 2 and 3rd .
  • the control unit 102 is provided to regulate and / or control the drive unit 111.
  • the drive unit 111 is switched on.
  • the drive unit 111 can be electronically controlled and / or regulated, so that a reversing operation and a specification by means of the hand switch 130 can be implemented for a desired rotational speed.
  • the motor 114 is designed as an electronically commutated motor.
  • the tool holder 150 is preferably formed and / or formed on the main output shaft 120.
  • the tool holder 150 is designed here as a chuck, which is provided to receive an insert tool 160.
  • the hand machine tool 100 has an energy supply unit 200 for supplying energy to the hand machine tool 100.
  • the energy supply takes place by means of a handheld machine tool battery pack, not shown.
  • the energy supply unit 200 provides the energy by means of the handheld power tool battery pack, the handheld power tool battery pack being designed to be exchangeable.
  • the handheld power tool 100 has a direction of rotation setting unit 170 with a direction of rotation selection element 172 for setting at least one direction of rotation of the drive unit 111.
  • the direction of rotation setting unit 170 uses a direction of rotation setting element 174 to set at least one first direction of rotation and at least one second direction of rotation of the drive unit 111, see also Fig. 2 and 3rd .
  • the first direction of rotation is a clockwise direction of rotation
  • the second direction of rotation is a counterclockwise direction of rotation.
  • the user can set the first direction of rotation by moving the direction of rotation selection element 172 to a first position.
  • the second direction of rotation is set by moving the direction of rotation selection element 172 into a second position.
  • the direction of rotation setting element 174 receives the settings of the direction of rotation selection element 172 and converts them into an electrical direction of rotation setting signal. The direction of rotation setting element 174 then transmits the electrical direction of rotation setting signal to the control unit 102.
  • the handheld power tool 100 comprises a blocking device 140 for blocking the direction of rotation setting unit 170.
  • the handheld power tool 100 has a guide device 180 with a guide slope 182, see Fig. 2 and 3rd , for guiding the blocking device 140 and a blocking element 190 for blocking the hand switch 130.
  • the direction of rotation setting unit 170, the blocking device 140, the guide device 180 and the blocking element 190 are described below with reference to FIG Fig. 2 and 3rd explained in more detail.
  • Fig. 2 shows sections of sectional views of the handheld power tool 100 according to the invention.
  • the hand switch 130 When the hand switch 130 is actuated in the actuation direction 131 the hand switch 130 brings the blocking device 140 out of a release position by means of a guide element 136, see Fig. 2a , in a blocking position, see Fig. 2b .
  • the blocking device 140 has a blocking element 142 and in this embodiment is designed as a blocking arm 143.
  • the blocking arm 143 is L-shaped here.
  • the blocking arm 143 further comprises a blocking hook 144 at a first end 106 and is connected to the handheld power tool housing 110 at a second end 108.
  • the blocking arm 143 is designed as a resilient blocking arm 243 which is fixedly mounted in the hand tool machine housing 110.
  • the resilient blocking arm 243 brings the blocking device 140 out of the blocking position, see Fig. 2b , in the release position, see Fig. 2a .
  • the resilient blocking arm 243 is partially elastically deformable.
  • the resilient blocking arm 243 is fixedly mounted in the handheld power tool housing 110.
  • the guide bevel 182 of the guide device 180 is formed on the blocking arm 143, 243.
  • the blocking device 140 comprises a return element 146 for automatically returning the blocking device 140 to the release position, see also Fig. 3 .
  • the direction of rotation selection element 172 of the direction of rotation setting unit 170 has two latching elements 176 and a blocking element 178, the two latching elements 176 and the blocking element 178 being formed in one piece with the direction of rotation selection element 172.
  • a first latching element 176, 276 in the first position of the direction of rotation selection element 172 is designed to block the direction of rotation setting unit 170 in the blocking position by means of the blocking arm 143, 243.
  • a second latching element 176, 376 is provided in the second position of the direction of rotation selection element 172 for blocking the direction of rotation setting unit 170 in the blocking position with the aid of the blocking arm 143, 243.
  • the locking element 178 is designed to lock the hand switch 130 in a third position of the direction of rotation selection element 172 in the release position.
  • FIG. 2a A section of a sectional view of handheld power tool 100 according to the invention is shown in the release position of blocking device 140.
  • the direction of rotation selection element 172 is shown in the first position.
  • the return element 146 is designed to automatically return the blocking device 140 from the blocking position into the release position when the hand switch 130 is not actuated.
  • the user can change the direction of rotation of the drive unit 111 by the user moving the rotation direction selection element 172.
  • the direction of rotation selection element 172 is designed as a direction of rotation selection slide.
  • the blocking device 140 releases the direction of rotation setting unit 170.
  • the drive unit 111 is out of operation in the release position.
  • the return element 146 automatically swings the blocking device 140 out of the blocking position into the release position when the manual switch 130 is not actuated.
  • the return element 146 is also formed here as a spring element 147.
  • the spring element 147 is formed as a spring-elastic shaped part of the blocking arm 143, 243, for example as a predetermined kink element 148.
  • the return element 146 is formed in one piece with the blocking arm 143, 243.
  • a section of a sectional view of the handheld power tool 100 according to the invention is shown in the blocking position of the blocking device 140.
  • the direction of rotation selection element 172 is shown in the first position.
  • the blocking position the direction of rotation setting unit 170 is blocked and the drive unit 111 is in operation.
  • the blocking position the user cannot change the direction of rotation.
  • the hand switch 130 pivots the blocking device 140 into the blocking position, the hand switch 130 being able to be actuated axially here in the actuating direction 131.
  • the guide device 180 guides the blocking device 140 from the release position into the blocking position.
  • the guide device 180 includes the guide slope 182.
  • the guide slope 182 interacts with the guide element 136 of the hand switch 130.
  • the guide bevel 182 bears against the guide element 136, so that the guide element 136 guides the blocking device 140 along the guide bevel 182 when the hand switch 130 is actuated.
  • the blocking device 140 is pivoted into the blocking position by means of the guide element 136.
  • the guide element 136 of the hand switch 130 is shaped as a guide edge 138.
  • the guide bevel 182 is formed in one piece with the blocking arm 142, 143.
  • the blocking device 140 forms a latching connection with the direction of rotation setting unit 170.
  • the blocking device blocks by means of the latching connection 140, the rotational direction setting unit 170 to block the change in the rotational direction of the drive unit 111.
  • the direction of rotation selection element 172 has the two locking elements 176, 276, 376.
  • the two locking elements 176, 276, 376 are shaped as two locking openings.
  • the blocking arm 143, 243 of the blocking device 140 has the blocking hook 144 at the first end 106.
  • the blocking arm 143, 243 is connected to the handheld power tool housing 110 at the second end 108.
  • the blocking hook 144 forms the latching connection with the two latching elements 176, 276, 376 when the blocking device 140 is in the blocking position.
  • the blocking hook 144 engages in one of the latching elements 176, 276, 376 in the blocking position.
  • the blocking hook 144 thus blocks the direction of rotation setting unit 170 by means of one of the latching elements 176, 276, 376.
  • the second end 108 of the blocking arm 143, 243 is positively received by the hand-held machine tool housing 110 and connected to it.
  • the blocking hook 144 of the blocking arm 143, 243 engages in the blocking position in the first latching element 176, 276. If the direction of rotation selection element 172 is in the second position, the blocking hook 144 engages in the blocking position in the second latching element 176, 376.
  • FIG. 2c A detail of a perspective view of the handheld power tool 100 according to the invention is shown in a neutral position of the direction of rotation setting unit 170.
  • the neutral position of the direction of rotation setting unit 170 is the third position of the direction of rotation selection element 172.
  • the direction of rotation selection element 172 comprises the blocking element 178, which locks the manual switch 130 in the neutral position.
  • the drive unit 111 has no direction of rotation and is therefore switched off.
  • the neutral position, the third position of the direction of rotation selection element 172 is arranged between the setting for the first direction of rotation, the first position, and the setting for the second direction of rotation, the second position.
  • the locking element 178 locks the hand switch 130, so that it is essentially not operable by the user to actuate the drive unit 111.
  • the blocking element 178 releases the manual switch 130 and the drive unit 111 can be put into operation.
  • the blocking element 178 is integral with the direction of rotation selection element 172.
  • this connects Locking element 178, the two locking elements 176, 276, 376, wherein the locking element 178 is formed here as a locking web.
  • the blocking hook 144 abuts the blocking element 178 as soon as the manual switch 130 is actuated when the direction of rotation selection element 172 is in the neutral position. In the neutral position, the guide slope 182 bears against the guide element 136 of the hand switch 130, so that the blocking device 140 blocks the hand switch 130 when it is actuated.
  • Fig. 3 shows a schematic section of a sectional view of the handheld power tool 100 according to the invention with an alternative embodiment of the return element 146 as a spring element 147.
  • the direction of rotation setting unit 170 is in the neutral position, the third position of the direction of rotation selection element 172, from FIG Fig. 2c shown, with the difference that the spring element 147 is formed as a spiral spring 149.
  • the blocking arm 143 is designed as a rotatably mounted blocking arm 343.
  • the rotatably mounted blocking arm 343 is held in the release position by means of a spring element 145.
  • the spring element 145 is the spiral spring 149.
  • the rotatably mounted blocking arm 343 is rotatably mounted on the handheld power tool housing 110 at the second free end 108.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Sawing (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Portable Power Tools In General (AREA)
EP19208772.4A 2018-11-29 2019-11-13 Machine-outil manuelle Pending EP3659754A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018220547.7A DE102018220547A1 (de) 2018-11-29 2018-11-29 Handwerkzeugmaschine

Publications (1)

Publication Number Publication Date
EP3659754A1 true EP3659754A1 (fr) 2020-06-03

Family

ID=68581352

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19208772.4A Pending EP3659754A1 (fr) 2018-11-29 2019-11-13 Machine-outil manuelle

Country Status (3)

Country Link
EP (1) EP3659754A1 (fr)
CN (1) CN111230816A (fr)
DE (1) DE102018220547A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3311421A1 (de) * 1983-03-29 1984-10-04 Hilti Ag, Schaan Elektromotorisch betriebenes handgeraet
DE3342412A1 (de) 1983-11-24 1985-06-05 Black & Decker Inc., Newark, Del. Schalteranordnung fuer den drehrichtungsumschalter eines elektrowerkzeugs, insbesondere einer bohr- oder schlagbohrmaschine
DE102009027705A1 (de) * 2009-07-15 2011-01-20 Robert Bosch Gmbh Handgeführtes Elektrowerkzeug
EP2949428A2 (fr) * 2014-05-27 2015-12-02 C. & E. Fein GmbH Outil électrique, en particulier visseuse, doté d'un inverseur de sens de la marche

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2631994C3 (de) * 1976-07-16 1985-07-11 Metabowerke KG Closs, Rauch & Schnizler, 7440 Nürtingen Handwerkzeug mit einer von einem Motor angetriebenen Arbeitsspindel
IT1210852B (it) * 1982-02-10 1989-09-29 Star Utensili Elett Commutatore perfezionato perl'inversione di marcia di un motore per utensili elettrici portatili.
JP2003145447A (ja) * 2001-11-12 2003-05-20 Nidec Shibaura Corp 電動工具
DE102004037898A1 (de) * 2004-08-05 2006-03-16 Robert Bosch Gmbh Elektromaschine
WO2012134471A1 (fr) * 2011-03-31 2012-10-04 Ingersoll-Rand Company Commutateur de marche avant-arrière pour outils électriques
CN202292699U (zh) * 2011-09-30 2012-07-04 浙江摩兴电器有限公司 手持式电动工具手柄旋转互锁装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3311421A1 (de) * 1983-03-29 1984-10-04 Hilti Ag, Schaan Elektromotorisch betriebenes handgeraet
DE3342412A1 (de) 1983-11-24 1985-06-05 Black & Decker Inc., Newark, Del. Schalteranordnung fuer den drehrichtungsumschalter eines elektrowerkzeugs, insbesondere einer bohr- oder schlagbohrmaschine
DE102009027705A1 (de) * 2009-07-15 2011-01-20 Robert Bosch Gmbh Handgeführtes Elektrowerkzeug
EP2949428A2 (fr) * 2014-05-27 2015-12-02 C. & E. Fein GmbH Outil électrique, en particulier visseuse, doté d'un inverseur de sens de la marche

Also Published As

Publication number Publication date
DE102018220547A1 (de) 2020-06-04
CN111230816A (zh) 2020-06-05

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