EP4319943A1 - Outil électrique portatif doté d'une unité d'activation - Google Patents

Outil électrique portatif doté d'une unité d'activation

Info

Publication number
EP4319943A1
EP4319943A1 EP22716160.1A EP22716160A EP4319943A1 EP 4319943 A1 EP4319943 A1 EP 4319943A1 EP 22716160 A EP22716160 A EP 22716160A EP 4319943 A1 EP4319943 A1 EP 4319943A1
Authority
EP
European Patent Office
Prior art keywords
drive motor
activation
speed
tool
drive unit
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
EP22716160.1A
Other languages
German (de)
English (en)
Inventor
Yen Tiong Tan
Khoo Ming Yang CALVIN
Han Hoong Sebastian Chin
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 EP4319943A1 publication Critical patent/EP4319943A1/fr
Pending legal-status Critical Current

Links

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
    • B25F5/02—Construction of casings, bodies or handles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • 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

Definitions

  • the present invention relates to a hand-held power tool, in particular a screwdriver, with an elongated housing in which a drive unit with at least one drive motor for driving a tool holder is arranged, the tool holder being designed for receiving an insert tool, and with an activation unit for activating the drive mo Tors, wherein by acting on an insert tool arranged in the tool holder against a workpiece to be machined, in particular along a longitudinal axis of the elongated housing, the drive motor is activated.
  • the rod screw has a drive motor in the housing for driving an associated tool holder. Pressing an insert tool arranged in the tool holder against a workpiece to be machined activates the drive motor or a switching element assigned to the drive motor at a predetermined speed.
  • the invention relates to a hand-held power tool, in particular a screwdriver, with an elongated housing in which a drive unit with at least one drive motor for driving a tool holder is arranged, the tool holder being designed for receiving an insert tool, and with an activation unit for activating the drive motor , whereby by applying pressure to an insert tool arranged in the tool holder against a workpiece to be machined, in particular along a longitudinal axis of the elongate housing, the drive motor is activated.
  • the activation unit has a first activation element for activating the drive motor at a first speed and a second activation element for activating the drive motor at a second speed, the first speed being lower than the second speed.
  • the invention thus makes it possible to provide a hand-held power tool in which the drive motor can be operated either at a first speed or at a second speed by loading an insert tool arranged in the tool holder against a workpiece to be machined.
  • An application-specific, operationally necessary speed of the drive motor can thus be selected in a simple manner.
  • the tool holder for activating the first and/or second activating element can be moved along the longitudinal axis relative to the drive motor.
  • a simple and uncomplicated actuation of the activation unit can thus be made possible.
  • the first and second activation element are preferably arranged on a gear housing associated with the drive unit, in particular on an end face of the gear housing facing the tool holder.
  • a drive unit housing is provided within the elongated housing for the axially immovable arrangement of the tool holder and the drive unit, with the drive unit housing being movable along the longitudinal axis relative to control electronics, with the control electronics being arranged on an end of the elongated housing opposite the tool holder .
  • the first activation element is preferably arranged on the drive unit housing.
  • activation of the first activation element can be effected easily and uncomplicatedly by moving the drive unit housing.
  • the second activation element is preferably arranged along the longitudinal axis between the drive unit and the control electronics.
  • a suitable arrangement of the second activation element can thus be made possible in a simple manner.
  • the first and second activation element are arranged along the longitudinal axis between the drive unit and the control electronics.
  • a first spring element is preferably assigned to the first activation element and a second spring element is assigned to the second activation element, the first and second spring elements having different spring rates, and the first and second spring elements being compressible by being applied in order to prevent actuation of the first or second activation element and thus to enable activation of the drive motor at the speed assigned to the first or second activation element.
  • At least one spring element is on an outer circumference of the tool holder, an inner holder of the tool holder, an outer circumference of a drive unit housing of the drive unit, and/or between the drive unit and control electronics, which are arranged on an end of the elongated housing opposite the tool holder orderly.
  • a suitable arrangement of at least one spring element can thus be made possible in a simple and uncomplicated manner.
  • the first and/or second spring element is preferably designed as a spiral spring or leaf spring.
  • a stable and robust spring element can thus be provided.
  • a spring retaining ring which has a first bearing bar at a first distance from the arrangement of the first spring element and a second bearing bar at a second distance from the arrangement of the second spring element, the first distance being greater than the second distance.
  • a spring retaining ring can thus be provided on which the first and second spring elements can be arranged securely and reliably.
  • torques associated with the first and second speeds can be made possible.
  • a separate switch is assigned to the first and/or second activation element, with operation of the separate switch by a user activating the drive motor at the speed assigned to the first and/or second activation element.
  • the first and/or second activation element is embodied as a sensor that detects a movement of the tool holder and/or a drive unit housing of the drive unit along the longitudinal axis, with the control electronics determining a predetermined speed of the drive motor as a function of a detected movement controls.
  • the first and/or second activation element is preferably designed as an on switch or off switch.
  • a safe and reliable activation element can thus be provided.
  • the present invention provides a method for operating a handheld power tool, in particular a screwdriver.
  • the hand-held power tool has an elongated housing in which a drive unit with at least one drive motor for driving a tool holder is arranged, with the tool holder being designed to hold an insert tool, and an activation unit for activating the drive motor, with actuation of one in the Tool holder arranged application tool against a workpiece to be machined, in particular along a longitudinal axis of the elongated housing, an activation of the drive motor takes place.
  • the procedure is characterized by the following steps:
  • the invention thus makes it possible to provide a method for operating a handheld power tool, in which the drive motor of the handheld power tool can be operated at a first or second speed by activating a first or a second activation element.
  • An application-specific, operationally necessary speed of the drive motor can thus be selected in a simple manner.
  • FIG. 1 shows a side view of a hand-held power tool according to the invention with an activation unit with a first and second activation element
  • FIG. 2 shows a schematic view of the hand-held power tool from FIG. 1 with the activation unit from FIG. 1,
  • FIG. 3 shows a longitudinal section through a drive unit assigned to the hand-held power tool from FIG. 1 with the activation unit from FIG. 2 in the deactivated state of the drive motor
  • FIG. 4 shows a longitudinal section through the drive unit of FIGS. 2 and 3 with the drive motor activated at a first speed
  • FIG. 5 shows a longitudinal section through the drive unit from FIGS. 2 to 4 with the drive motor activated at a second speed
  • FIGS. 1 to 5 shows a longitudinal section through a spring retaining ring assigned to the drive unit from FIGS. 1 to 5,
  • FIG. 7 shows a schematic view of the hand-held power tool from FIG. 1 with an activation unit according to a further embodiment
  • FIG. 8 shows a longitudinal section through the drive unit from FIGS. 1 and 7 with the activation unit from FIG. 7 in the deactivated state of the drive motor
  • FIG. 9 shows a longitudinal section through the drive unit of FIG. 7 with the drive motor activated at a first speed
  • FIGS. 7 and 8 show a longitudinal section through the drive unit of FIGS. 7 and 8 with the drive motor activated at a second speed
  • FIG. 11 shows a schematic view of the handheld power tool from FIG. 1 with the activation unit according to an alternative embodiment
  • FIG. 12 shows a schematic view of the handheld power tool from FIG. 1 with the activation unit according to a further embodiment.
  • FIG. 1 shows an exemplary hand-held power tool 100 which illustratively has an elongate housing 110 .
  • the hand-held power tool 100 is thus configured, for example, in the so-called “rod shape”.
  • the hand-held power tool 100 is preferably designed as a screwdriver, in particular as a rod screwdriver.
  • the hand-held power tool 100 can be mechanically and electrically connected to an energy supply unit 150 for mains-independent power supply. Before given to the power supply unit 150 is designed as a battery pack.
  • At least one drive motor 140 for driving a tool holder 120 is preferably arranged in the elongate housing 110 .
  • the tool holder 120 is preferably assigned an inner holder 125 for receiving an insert tool 199, e.g. a screwdriver bit or a drill.
  • the tool holder 120 is preferably a hexagon socket holder for a screw bit.
  • the tool holder 120 can also be designed as an external holder, in particular as an external square holder.
  • the elongate housing 110 preferably has a cylindrical base body with a first axial end 101 and an opposite second axial end 102, with the tool holder 120 being arranged in the region of the first axial end 101, for example.
  • a longitudinal direction 105 of the elongated housing 110 is formed between the first and second axial ends 101, 102.
  • the tool holder 120 is preferably assigned an axis of rotation 129 .
  • the tool holder 120, the drive motor 140 and the housing 110 with a handle area 115 and a cover 117 are arranged along a common axis of rotation, preferably the axis of rotation 129 of the tool holder 120. All elements of the hand-held power tool 100 are preferably arranged in the elongate housing 110 . So is the battery pack 150 compared to a Hand tool with a pistol-shaped housing, in which the battery pack is arranged perpendicular to the drive motor, which is sufficiently known from the state of the tech technology, preferably in the hand tool 100 just in case the housing 110 is arranged.
  • the drive motor 140 is assigned a gear 145 .
  • Gear 145 is preferably designed as a planetary gear.
  • a sliding switch 170 is preferably provided, which is arranged on the housing 110 to activate a reverse operation of the drive motor 140 .
  • the housing 110 also preferably has a torque adjustment sleeve 130 at its axial end 101 .
  • the cover 117 is preferably arranged on the axial end 102 of the elongated housin ses 110 facing away from the tool holder 120 .
  • an activation unit 189 is provided for activating the drive motor 140 by acting on the tool holder 120 or the insert tool 199 arranged or accommodated in the tool holder 120 against a workpiece to be machined.
  • a corresponding axial loading of the tool holder 120, or the insert tool 199 and thus the tool holder 120, i.e. loading in the axial direction, preferably takes place in the longitudinal direction 105 against the workpiece to be machined.
  • the drive motor 140 is preferably activated, in particular axially, by at least 0.1Nm acting on the tool holder 120 or the application tool 199 arranged therein “ A direction in the longitudinal direction 105 of the housing 110, in particular a direction coaxial or parallel to the axis of rotation 129 of the tool holder 120 to understand.
  • the activation unit 189 has a first activation element 185 for activating the drive motor 140 at a first speed and a second activation element 195 for activating the drive motor 140 at a second speed.
  • the first and/or second activation element 185, 195 is preferably designed as an on switch or off switch.
  • the first speed is less than the second speed.
  • the first speed is preferably in the range of 30% to 70% of a maximum speed of the drive motor 140, preferably 50% of the maximum speed of the drive motor 140.
  • the second speed is preferably in the range of 70% to 100% of the maximum speed of the Drive motor 140, preferably at 100% of the maximum speed of the drive motor 140. It should be noted that the specified ranges of the first and second speeds are merely exemplary in character and are not to be seen as a limitation of the present invention.
  • the activation unit 189 is preferably arranged along a longitudinal axis 128 between the drive motor 140 and the first axial end 101 of the housing 110 or an end face 103 of the housing 110 .
  • the longitudinal axis 128 illustratively corresponds to the axis of rotation 129.
  • the tool holder 120 can be moved along the longitudinal axis 128 relative to the drive motor 140 in order to activate the first and/or second activation element 185, 195.
  • a first spring element 180 is preferably assigned to the first activation element 185 and a second spring element 190 is assigned to the second activation element 195 .
  • the first and second spring elements 180, 190 preferably have different spring rates.
  • the first and second spring element 180, 190 can preferably be compressed by being applied, preferably in a direction 198 pointing towards the drive motor 140, in order to actuate the first or second activation element 185, 195 and thus activate the drive motor 140 in the first or second activation element 185, 195 associated speed to allow.
  • the first and/or second spring element 185, 195 is preferably designed as a spiral spring or leaf spring.
  • a separate switch 175 is assigned to the first and/or second activation element 185, 195.
  • a separate switch 175 By operating the Ready switch 175 by a user preferably activates the drive motor 140 at the speed associated with the first and/or second activation element 185, 195.
  • the separate switch 175 is illustratively arranged in the area of the slide switch 170 . It is pointed out that the separate switch 175 can also be arranged at any other location on the housing 110 of the hand-held power tool 100 .
  • FIG. 2 shows hand-held power tool 100 from FIG. 1 with an exemplary drive unit 220.
  • Drive unit 220 has at least drive motor 140.
  • the transmission 145 is also assigned to the drive unit 220 .
  • the activation unit 189 is illustratively arranged between the insertion tool 199 and the tool holder 120 .
  • the activation unit 189 preferably has an actuating element 240 for actuating the activation elements 185, 195 of FIG.
  • the actuating element 240 is preferably arranged on an outer circumference (371 in FIG. 3) of the tool holder 120 .
  • the first and second activation element 185 , 195 are arranged on a transmission housing 210 assigned to the drive unit 220 .
  • the first and second activation element 185, 195 are preferably arranged on an end face 215 of the transmission housing 210 that faces the tool holder 120.
  • the two activation elements 185, 195 are preferably arranged on an end face 215 of the gear housing 210 facing the insertion tool 199 or the first end 101.
  • FIG. 2 illustrates the arrangement of the spring elements 180, 190 between the gear mechanism 145 and the actuating element 240.
  • the two spring elements 180, 190 are illustrated as spiral springs.
  • the first spring element 180 is preferably arranged in an inner receptacle (370 in FIG. 3) of the tool holder 120 .
  • the second spring element 190 preferably on an outer circumference (371 in Fig. 3) of the tool holder 120 is arranged.
  • An electronic control system 250 is preferably arranged in the area of a side of the drive motor 140 that faces the second axial end 102 of the housing 110 .
  • the two activation elements 185, 195 are each connected to the control electronics 250 via a connec tion 260, 270.
  • the first activation element 185 is preferably connected to the control electronics 250 via a connection 260 and the second activation element 195 is connected to the control electronics 250 via a connection 270 .
  • Signals for activating the associated speed of the drive motor 140 are preferably sent to the control electronics 250 via the connections 260, 270.
  • At least the second activation element 195 is preferably arranged along the longitudinal axis 128 of FIG. 1 between the drive unit 220 and the control electronics 250 .
  • the first and second activation elements 185, 195 are arranged along the longitudinal axis 128 of FIG. 1 between the drive unit 220 and the control electronics 250.
  • the first spring element 180 is preferably compressed first, as a result of which the first activation element 185 is actuated or activated by the actuating element 240 . This activates the drive motor 140 at the first speed.
  • the second spring element 190 is preferably compressed by a further application of a higher force, as a result of which the second activation element 195 is activated and the drive motor 140 is operated at the second speed.
  • the two activation elements 185, 195 are arranged along the longitudinal axis 128 in FIG. 1 at a different distance from the actuating element 240.
  • the activation elements 185, 195 are preferably designed as motor switches.
  • Fig. 3 shows the drive unit 220 of the handheld power tool from Fig. 1 and Fig. 2 with the activation unit 189 in an exemplary rest position 301, ie when the drive motor 140 is deactivated.
  • the first activation element 185 is arranged along the longitudinal axis 128 of Fig.
  • the first activation element 185 is preferably designed as an engine switch.
  • the second activation element 195 is illustratively arranged on the end face 215 of the transmission housing 210 .
  • the second activation element 195 is preferably designed as a motor switch in the embodiment shown.
  • the circuit board 330 preferably has one or more LEDs 310 for illuminating the work field.
  • the printed circuit board 330 is preferably arranged via a holding element 399 in the housing 110, in particular in the torque adjustment sleeve 130.
  • the holding element 399 preferably has a disk-shaped base body with a recess. The recess is formed in such a way that the first activation element 185 can be arranged in it.
  • a torque coupling with a torque setting device which has the torque setting sleeve 130 for setting a predefinable torque and a spring retaining ring 350, is preferably provided.
  • the torque adjustment sleeve 130 is preferably connected directly to the spring retaining ring 350 via teeth 342, 352.
  • the torque setting sleeve 130 preferably has an internal thread 342 on its inner circumference and the spring retaining ring 350 has an external thread 352 on its outer circumference for forming the teeth 342, 352.
  • the transmission 210 preferably has an output element 360, with the output element 360 preferably engaging in an inner receptacle 370 of the tool receptacle 120.
  • the tool holder 120 is preferably designed to be axially displaceable relative to the output element 360 .
  • the output element 360 preferably has an interior receptacle for partially accommodating the second spring element 190 .
  • the second spring element 190 is preferably arranged between the output element 360, in particular the interior receptacle of the output element 360, and the tool receptacle 120, in particular the interior receptacle 370 of the tool receptacle 120.
  • the interior of the driven element 360 preferably has a central positioning pin 366 which is designed to center the second spring element 190 in the interior of the driven element 360 .
  • a single second spring element 190 is preferably provided. However, several spring elements 190 arranged in a row can also be arranged in the interior receptacle of the tool holder 120 .
  • FIG. 3 also shows the arrangement of a bearing element 380 between the transmission housing 210 and an outer circumference 371 of the tool holder 120 Positioning groove arranged fuse element 320 shown.
  • a spindle lock 390 is preferably assigned to the output element 360 . Such a spindle lock 390 is sufficiently known from the prior art, which is why a detailed description is not given here.
  • FIG. 4 shows the tool holder 120 with the activation unit 189 from FIG. 3, with the drive motor 140 activated in a first speed stage 401, the drive motor 140 being driven at the first speed.
  • the actuating element 240 is preferably spaced from the first activation element 185 by a distance 410 .
  • the actuating element 240 is preferably spaced apart from the second activation element 195 by a distance 420 .
  • the first spring element 180 is compressed by a loading of the loading element 240 and the second spring element 190 is not compressed.
  • the tool holder 120 To activate the drive motor 140 at the first speed, the tool holder 120, or the insert tool 199 arranged in the tool holder 120, is impacted against a workpiece to be machined, as a result of which the tool holder 120 is displaced in the direction 198 toward the drive motor 140.
  • the actuating element 230 is preferably moved away from the first activation element 185 and toward the second activation element 195, whereby the distance 410 is generated and the first activation element 185, designed as a motor switch, activates the drive motor 140 at the first speed.
  • Fig. 5 shows the tool holder 120 with the activation unit 189 of FIG. 3 and FIG.
  • the actuating element 240 is preferably at a distance from the first activation element 185 by the distance 410 in FIG. 4, with the distance 410 in the second speed stage 501 in FIG. 5, however, being greater than in FIG. Furthermore, the actuating element 240 is preferably in contact with the second activation element 195, so that the distance 420 from FIG. 4 between the actuating element 240 and the second activation element 195 is reduced at least approximately to zero. In this case, the first spring element 180 and the second spring element 190 are compressed by being acted upon. In this case, the actuating element 240 preferably acts on the first spring element 180 and the tool holder 120 acts on the second spring element 190, so that this is also compressed compared to FIG.
  • the tool holder 120 To activate the drive motor 140 at the second speed, the tool holder 120, or the insert tool 199 arranged in the tool holder 120, is preferably applied more strongly against a workpiece to be machined in comparison to Fig. 4, as a result of which the tool holder 120 moves in the direction 198 to Drive motor 140 shifts towards.
  • the actuating element 230 is moved away from the first activation element 185 and comes into contact with the second activation element 195, whereby the distance 410 is increased compared to FIG. 4 and the second activation element 195 designed as a motor switch is activated and the drive motor 140 is activated at the second speed .
  • Fig. 6 shows the spring retaining ring 350 of Figs. 3 to 5 with which the spring elements 180, 190 are associated in accordance with a further embodiment.
  • the spring retaining ring 350 has illustratively a first bearing bar 610 with a first distance 610 for arranging the first spring element 180 and a second bearing bar 620 with a second distance 650 for arranging the second spring element 190 .
  • the bearing webs 610, 620 are in the form of pegs.
  • the first distance 640 is preferably greater than the second distance 650.
  • the distances 640, 650 are illustratively formed from an underside 670 of the spring retaining ring 350 facing the drive motor 140 to a contact surface 672, 674 facing the bearing web 610, 620.
  • the spring elements 180, 190 are preferably arranged between the spring retaining ring 350 and a transmission element 660 or pressure plate, which is assigned to the torque clutch and faces the drive motor 140. These Fe derimplantation 180, 190 are formed in the embodiment shown as compression springs.
  • the spring elements 180, 190 are preferably assigned the transmission element 660 or pressure plate that is acted upon in the direction of the drive motor 140.
  • at least one first spring element 180 and at least one second spring element 190 are arranged at equal distances from one another in the circumferential direction.
  • the spring retaining ring 350 has two distinct spring elements. These can correspond to the spring elements 180, 190, but can also be designed independently of the spring elements 180, 190, i.e. have other spring rates, for example.
  • a comparatively small output torque at a low engine speed e.g. the first speed
  • a higher speed e.g. the second speed
  • a comparatively larger output torque can be made possible.
  • FIG. 7 shows hand-held power tool 100 from FIG. 1 with its drive unit 220 .
  • the drive unit 220 has at least the drive motor 140.
  • the transmission 145 is preferably assigned to the drive unit 220 .
  • the drive unit 220 is arranged in a drive unit housing 710 .
  • the drive unit housing 710 is disposed within the elongated housing 110 of FIG.
  • the drive unit housing 710 is preferably provided for the axially immovable arrangement of the tool holder 120 and the drive unit 220 .
  • Drive unit housing 710 movable along longitudinal axis 128 in FIG. 1 relative to control electronics 250 .
  • the control electronics 250 are arranged on an end 102 of FIG. 1 of the elongated housing 110 opposite the tool holder 120 .
  • the actuating element 240 is illustratively arranged on an outer circumference 712 of the drive unit housing 710 .
  • the second activation element 195 is arranged, for example, in the area of the actuating element 240 .
  • the second activation element 195 is preferably fixedly arranged on the elongate housing 110 .
  • the spring element 190 assigned to the second activation element 195 is arranged on the outer circumference 712 of the drive unit housing 710 . Before given to the spring element 190 in Fig. 7 is designed as a leaf spring.
  • the first activation element 185 is arranged, for example, on an end face 720 of the control electronics 250 facing the drive unit housing 710 .
  • the spring element 180 assigned to the first activation element 710 is preferably arranged between the drive unit housing 710 and the control electronics 250 .
  • the spring element 180 is designed as a spiral spring.
  • First activation element 185 can be arranged in the area of actuating element 240 and second activation element 195 can be arranged on end face 720 of control electronics 250, spring element 180 being arranged as a leaf spring on outer circumference 712 and spring element 190 embodied as a spiral spring between the Drive unit housing 710 and the control electronics 250 is arranged.
  • the activation element arranged on the electronic control unit 250 in FIG. 7 the first activation element 185, can also be arranged on the end face of the drive unit housing 710 facing the electronic control unit 250.
  • the spring element 180 When the tool holder 120 or the insert tool 199 arranged therein is subjected to a load against a workpiece to be machined, preferably first the spring element 180 is compressed and thus the first activation element 185 is activated. This drives the drive motor 140 at the first speed. If it is acted upon further, the spring element 190 is preferably additionally compressed and the second activation element 195 is activated. As a result, the drive motor 140 is driven in the second Ge speed.
  • FIG. 8 shows the hand-held power tool 100 from FIG. 1 with the drive unit housing 710 from FIG. 7 in the rest position 301 from FIG. 3 with the activation unit 189 according to a further embodiment.
  • the actuating element 240 is preferably formed in one piece on the drive unit housing 710 .
  • the spring element 190 is illustratively arranged on the outer circumference 712 of the drive unit housing 710 and is preferably attached to the elongate housing 110 . Analogously to the embodiment of FIG. 7, the spring element 190 is designed as a leaf spring.
  • the first and second activation elements 185, 195 are arranged on the end face 720 of the control electronics 250.
  • the spring element 180 is arranged between the drive unit housing 710 and the control electronics 250.
  • a distance 840 is illustratively formed between the actuating element 240 and the spring element 190 . Furthermore, a distance 820 is formed between the activation element 185 and the drive unit housing 710 , for example, and a distance 830 is formed between the activation element 195 and the drive unit housing 710 . Distance 830 is preferably greater than distance 820.
  • Fig. 9 shows the hand tool 100 of FIG. 8 with an activated drive motor 140 in the first speed stage 401 of FIG. 4, in which the drive motor 140 is driven at the first speed.
  • the first activation element 185 is preferably activated and the spring element 180 is compressed.
  • the distance 840 between the actuating element 240 and the spring element 190 and the distance 830 between the activation element 195 and the drive unit housing 710 are smaller in comparison to FIG.
  • the tool holder 120 or an insert tool arranged therein is preferably applied against a workpiece to be machined, whereby the spring element 180 is compressed and the first activation element 185 is activated.
  • FIG. 10 shows the hand-held power tool 100 from FIGS. 8 and 9 with an activated drive motor 140 in the second speed stage 501 from FIG. 5, in which the drive motor 140 is driven at the first speed.
  • the first activation element 185 and the second activation element 195 are preferably activated, and the spring elements 180, 190 are both compressed.
  • the spring element 190 is illustratively acted upon by the actuating element 240 .
  • the tool holder 120 or an insert tool arranged therein is preferably pressed more strongly against a workpiece to be machined in comparison to FIG the second activation element 195 is activated.
  • FIG. 11 shows the hand-held power tool 100 from FIG. 1 with its drive unit 220 from FIG.
  • the spring elements 180, 190 are arranged between the gear 145 and the actuating element 240, with the first spring element 180, designed as a spiral spring, being arranged in the inner receptacle 370 of Fig. 3 of the tool holder 120 and the second spring element 190 is arranged on the outer circumference 371 of FIG. 3 of the tool holder 120 .
  • the first and/or second activation element 185, 195 is designed as a sensor 1020.
  • the sensor 1020 is preferably designed to detect a movement of the tool holder 120 and/or the drive unit housing 710 in FIG. 12 of the drive unit 220 along the longitudinal axis 128 in FIG.
  • the control electronics 250 preferably controls a specified speed of the drive motor 140 as a function of a detected movement.
  • the sensor 1020 is arranged on the actuating element 240 by way of example.
  • the sensor 1020 is preferably connected to the electronic control system 250 via a line 1030 and preferably sends an on/off signal to the electronic control system 250.
  • the sensor 1020 is illustratively assigned a magnet 1010 for detecting a movement.
  • the magnet 1010 is preferably arranged on the tool holder 120 . It is pointed out that the sensor 1020 can also be arranged on the tool holder 120 and the magnet 1010 can be arranged on the actuating element 240, for example.
  • the tool holder 120 or the insert tool 199 arranged therein is acted upon by a workpiece to be machined, with the spring element 180 preferably being compressed.
  • the sensor 1020 preferably detects a movement in relation to the tool holder 120 and the control electronics 250 drives the drive motor 140 at the first speed as a result of the movement detected. If the tool holder 120 is subjected to further, stronger loading, the spring element 190 is preferably additionally compressed. This is detected by the sensor 120 and as a result of the further movement relative to the tool holder 120, the control electronics 250 preferably drives the drive motor 140 at the second speed.
  • the senor 1020 can also be designed as a two-signal switch that sends a signal to the control electronics 250 in order to output two different torques and speeds.
  • the sensor 1020 can be designed, for example, as an infrared sensor that works depending on a detected distance from a workpiece to be machined.
  • FIG. 12 shows the handheld power tool 100 from FIG. 1 with its drive unit 220 from FIG. 7, in which the drive unit 220 is arranged in the drive unit housing 710 .
  • the actuating element 240 is arranged analogously to FIG. 7 on the outer circumference 712 of the drive unit housing 710 .
  • the spring element 190 embodied as a leaf spring is arranged illustratively on the outer circumference 712 of the drive unit housing 710 and the spring element 180 embodied as a spiral spring is arranged between the drive unit housing 710 and the control electronics 250 .
  • the sensor 1020 embodied as an activation element 185, 195 is preferably arranged in the region of the actuating element 240 and is preferably fixed to the elongated housing 110.
  • the sensor 1020 is preferably designed to detect a movement of the drive unit housing 710 along the longitudinal axis 128 in FIG. 1 .
  • the control electronics 250 preferably controls a specified speed of the drive motor 140 depending on a detected movement.
  • the tool holder 120 or the insert tool 199 arranged therein is preferably loaded against a workpiece to be machined, with the spring element 180 preferably being compressed.
  • the sensor 1020 preferably detects a movement in relation to the drive unit housing 710 and the control electronics 250 drives the drive motor 140 at the first speed as a result of the movement detected. If the tool holder 120 is subjected to further, stronger loading, the spring element 190 is preferably additionally compressed by the actuating element 240 . This is detected by the sensor 120 and due to the further movement in relation to the drive unit housing 710, the control electronics 250 preferably drives the drive motor 140 at the second speed.
  • the first and second activation element 185, 195 can have two different actuation variants: On the one hand, activation by applying pressure, and on the other hand, activation by actuating a separate switch, e.g. switch 175 from Fig. 1
  • the first speed can be activated via first activation element 185 or a separate switch and when hand-held power tool 100, in particular tool holder 120 or an insert tool arranged therein, is acted upon against a workpiece to be machined the first speed is activated, or the drive motor 140 is operated at the first speed.
  • the second activation element 195 is actuated or a separate switch is activated, then at a further loading, for example against the transmission housing 210 of FIG. 2, the second speed is set.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Abstract

L'invention concerne un outil électrique portatif (100), en particulier un tournevis, comprenant : un boîtier allongé (110) dans lequel est agencée une unité d'entraînement (220) comprenant au moins un moteur d'entraînement (140) destiné à entraîner un raccord femelle d'outil (120), le raccord femelle d'outil (120) étant conçu pour recevoir un outil d'insertion (190) ; et une unité d'activation (189) destinée à activer le moteur d'entraînement (140), le moteur d'entraînement (140) étant activé par l'outil d'insertion (190) qui est situé dans le raccord femelle d'outil (120) agissant, en particulier le long d'un axe longitudinal (128) du boîtier allongé (110), sur une pièce sur laquelle est travail est à effectuer. L'unité d'activation (189) comporte un premier élément d'activation (185) destiné à activer le moteur d'entraînement (140) à une première vitesse et un second élément d'activation (195) destiné à activer le moteur d'entraînement (140) à une seconde vitesse, la première vitesse étant inférieure à la seconde vitesse.
EP22716160.1A 2021-04-07 2022-03-15 Outil électrique portatif doté d'une unité d'activation Pending EP4319943A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021203415.2A DE102021203415A1 (de) 2021-04-07 2021-04-07 Handwerkzeugmaschine mit einer Aktivierungseinheit
PCT/EP2022/056743 WO2022214283A1 (fr) 2021-04-07 2022-03-15 Outil électrique portatif doté d'une unité d'activation

Publications (1)

Publication Number Publication Date
EP4319943A1 true EP4319943A1 (fr) 2024-02-14

Family

ID=81307327

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22716160.1A Pending EP4319943A1 (fr) 2021-04-07 2022-03-15 Outil électrique portatif doté d'une unité d'activation

Country Status (5)

Country Link
US (1) US20240157538A1 (fr)
EP (1) EP4319943A1 (fr)
CN (1) CN117425544A (fr)
DE (1) DE102021203415A1 (fr)
WO (1) WO2022214283A1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5557990A (en) 1995-07-27 1996-09-24 Shin; Fu-Zong Actuating device for use in powered screwdriver
JP4823499B2 (ja) * 2004-07-23 2011-11-24 勝行 戸津 ブラシレスモータ駆動回転工具の制御方法
DE102010053314A1 (de) * 2010-11-26 2012-05-31 C. & E. Fein Gmbh Schrauber mit sensorgesteuerter Abschaltung
DE102011004364A1 (de) 2011-02-18 2012-08-23 Robert Bosch Gmbh Handwerkzeugmaschine, insbesondere Akkuschrauber
EP2903784B1 (fr) 2012-10-08 2021-06-23 Robert Bosch GmbH Outil électroportatif
CN104853881B (zh) * 2012-12-21 2017-03-08 阿特拉斯·科普柯工业技术公司 具有推动启动功能的脉冲扳手
CN107378848A (zh) * 2016-12-30 2017-11-24 博世电动工具（中国）有限公司 起子机
DE102019213742A1 (de) 2019-09-10 2021-03-11 Robert Bosch Gmbh Handwerkzeugmaschine

Also Published As

Publication number Publication date
DE102021203415A1 (de) 2022-10-13
WO2022214283A1 (fr) 2022-10-13
US20240157538A1 (en) 2024-05-16
CN117425544A (zh) 2024-01-19

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