EP3053708A1 - Dispositif auxiliaire - Google Patents

Dispositif auxiliaire Download PDF

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Publication number
EP3053708A1
EP3053708A1 EP15203044.1A EP15203044A EP3053708A1 EP 3053708 A1 EP3053708 A1 EP 3053708A1 EP 15203044 A EP15203044 A EP 15203044A EP 3053708 A1 EP3053708 A1 EP 3053708A1
Authority
EP
European Patent Office
Prior art keywords
tool
unit
accessory device
detent
drive
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.)
Granted
Application number
EP15203044.1A
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German (de)
English (en)
Other versions
EP3053708B1 (fr
Inventor
Dietmar Saur
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
Priority to EP19167348.2A priority Critical patent/EP3539725B1/fr
Publication of EP3053708A1 publication Critical patent/EP3053708A1/fr
Application granted granted Critical
Publication of EP3053708B1 publication Critical patent/EP3053708B1/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
    • B25F3/00—Associations of tools for different working operations with one portable power-drive means; Adapters therefor

Definitions

  • the invention relates to an accessory device to an arrangement on a hand tool, with at least one coupling unit, which is provided for releasable mechanical coupling with the power tool, in particular for coupling to an insert tool receptacle of the power tool, and with a tool holder for receiving an insert tool.
  • the accessory device comprises at least one detent impact unit, which is provided in at least one operating state to generate a shock pulse to a striking drive of the tool holder.
  • an "accessory device” should be understood to mean, in particular, a device which is intended for operation with a basic device, which has a drive unit for a rotary drive.
  • the accessory device is provided for a specific purpose.
  • the accessory device is preferably provided exclusively for operation with a basic device, in particular with a handheld power tool.
  • the accessory device is interchangeable with other accessory devices having a same purpose or another purpose.
  • the base device is operable independently of the accessory device.
  • a "hand tool machine” is intended to mean a workpiece-working machine which is durable for use by an operator, but advantageously a cordless screwdriver, a drill, a drill and / or percussion hammer, a saw, a planer, a screwdriver , a milling machine, a grinder, an angle grinder, a garden tool and / or a multi-function tool.
  • the portable power tool preferably has a drive unit for a rotary drive, preferably an electric drive unit, for example an electric motor.
  • the power tool is independent of the network operable.
  • the power tool with an energy storage device, such as a battery pack, coupled.
  • an “insertion tool receptacle” is to be understood as a receptacle at least for an insertion tool, for example for an insert bit.
  • the insert tool receptacle is formed as part of a machine interface, which is provided to the accessory devices simultaneously with a housing unit and to couple with an output shaft.
  • a “detent impact unit” is to be understood in this context as a unit which is intended to translate a rotary movement into a periodic axial movement.
  • the detent impact unit is intended to translate a rotary drive in an at least partially translational drive.
  • the Rastenschlagtechnikinheit at least a pair of corresponding inclined surfaces which are arranged obliquely to a cross section perpendicular to a working axis.
  • a "percussion impulse” is to be understood as meaning, in particular, a periodically repeatable impulse impulse.
  • the impact pulse is formed as an axial pulse and has an axially aligned component whose amount has at least 80 percent, preferably 90 percent and preferably 95 percent of a total amount of impact pulse.
  • Directional information such as “axial”, “radial”, “in the circumferential direction” should be understood in this context, in particular with respect to a rotational axis, preferably with respect to a rotational axis.
  • By “intended” is intended to be understood in particular specially designed and / or equipped. The fact that an object is intended for a specific function should in particular mean that the object fulfills and / or executes this specific function in at least one application and / or operating state.
  • the Rastenschlagtechnikinheit comprises at least one drive element having a connection region which is drivably connectable with an insertion tool receptacle of the power tool.
  • a drive can advantageously be transferred from the handheld power tool to the accessory device.
  • a "drive element” is to be understood as meaning, in particular, an element which is intended to transmit and / or forward a drive movement, preferably a rotational movement and / or an angular momentum.
  • the drive element is provided to transmit a rotational movement in an axial direction and is formed, for example, as a shaft. It is conceivable that the drive element is designed as a wheel or has a plurality of wheels.
  • the drive element can be plugged onto the insertion tool receptacle.
  • a drive element of the detent impact unit is formed as a spindle which is axially movable and rotatably connected to an insertion tool receptacle of the power tool connected.
  • This allows the Rastenschlagwerk particularly simple, fast and reliable drive technology connected to the power tool. It can be provided a particularly simple constructed Raschendorftechnikinheit.
  • a particularly compact detent impact unit can be provided.
  • the drive element is provided at least in a Schlagbohr réelle to an axial movement relative to the insertion tool receptacle.
  • the drive element engages in a coupled state in a recess of the tool insertion. It is also conceivable that the drive element has a receptacle in which engages in a coupled state, an element of the tool insertion.
  • the tool holder covers at least partially the Rastenschlagtechnikinheit radially.
  • an existing space can be used particularly advantageous.
  • a particularly compact accessory device can be provided.
  • radially overlapping is to be understood in this context in particular that the tool holder at least substantially encloses and / or surrounds at least one element of the detent impact unit at least substantially.
  • the tool holder covers at least one element of the catch impact unit at least 80 percent, preferably at least 90 percent, and more preferably at least 95 percent of a radial outer surface of the element.
  • the detent impact unit has at least one spring element which is provided to switch the impacting drive in response to a contact pressure.
  • a contact pressure is to be understood as meaning a pressure which an operator provides in an operating state during a deployment movement.
  • a "spring element” should be understood to mean, in particular, an elastic force storage element become.
  • the spring element is designed as a helical compression spring.
  • the spring element is arranged concentrically to the drive element of the detent impact unit.
  • the Rastenschlagwerkinheit on at least one locking unit to a stroke shutdown can be provided.
  • the locking unit is provided for operation by the operator.
  • the locking unit comprises an actuating element which is arranged in the axial direction between the drill chuck and the coupling unit.
  • a "impact shut-off" is to be understood as a unit which is intended to switch off, interrupt and / or decouple a striking drive.
  • the accessory device preferably has a rotary drive which can be used independently of the impact shut-off.
  • the detent impact unit has no device for a strike shutdown.
  • the accessory device is provided in such an embodiment constantly to a Schlagbohr compassion.
  • the locking unit is provided to fix in at least one operating state, an axial position of the tool holder relative to the coupling unit.
  • a structurally simple locking unit can be provided for a strike shutdown.
  • the locking unit is preferably provided to disengage latching elements and / or latching areas of the latching percussion unit and / or to fix them in a mutually engaged-free position.
  • the accessory device comprises at least one gear unit, which is provided to translate a speed and / or torque of an output shaft of the power tool into a speed and / or torque of the tool holder.
  • a rotational speed of the accessory device can be advantageously adapted to a percussion drilling operation.
  • a particularly powerful accessory device can be provided.
  • the transmission unit is designed as a planetary gear.
  • the gear unit has at least two switchable gears.
  • a "gear” is to be understood in this context, in particular a state of a transmission, which determines a gear ratio of the transmission and / or adjusts.
  • a hand-held power tool system with an accessory device according to the invention and with at least one hand-held power tool is proposed for driving the accessory device.
  • a hand tool machine system for a wide range of use can be provided.
  • a large number of work cases and / or applications can be achieved.
  • a particularly inexpensive hand tooling system for a percussion drilling operation can be avoided.
  • It can be a particularly lightweight and / or particularly compact hand tool, in particular cordless screwdriver to be provided for coupling with the accessory device.
  • It may be a hand tool system for a particularly simple change of use, for example, between impact drilling, drilling and / or screws are provided. It can be provided a particularly powerful hand tool system.
  • FIG. 1 shows a system 34a with a hand tool 12a and with an accessory device 10a that includes a detent impactor unit 20a.
  • the system 34a is particularly intended for drilling or percussion drilling.
  • the accessory device 10a is provided for an arrangement on the handheld power tool 12a and comprises a coupling unit 14a, which is provided for a coupling of the accessory device 10a to the handheld power tool 12a.
  • the coupling unit 14a is provided for coupling to an insert tool receptacle 16a of the handheld power tool 12a.
  • the accessory device 10a comprises a tool holder 18a for receiving an insert tool. It is conceivable that the system 34a comprises further accessory devices which are provided for coupling to the handheld power tool 12a.
  • the detent impact unit 20a is provided in at least one operating state to generate a shock pulse to a striking drive of the tool holder 18a.
  • the accessory device 10a comprises a housing unit 36a on which the detent impact unit 20a is arranged.
  • the tool holder 18a is mounted axially movably on the housing unit 36a.
  • the hand tool 12a is formed in the present embodiment as a cordless screwdriver.
  • the hand tool 12a comprises an electric drive unit 38a, which has an electric motor.
  • the hand tool 12a includes an output shaft 32a provided to engage to transmit torque generated by the drive unit 38a and / or a rotational movement (see. FIG. 2 ).
  • the hand tool 12a is pistol-shaped in the present embodiment.
  • the hand tool 12a has a drive and work area 40a and a grip area 42a.
  • the hand tool 12a has a drive and working axle 44a and a handle axle 46a.
  • the drive and work axles 44a and the handle axles 46a enclose an angle of about 80 degrees with each other.
  • the drive and working axis 44a and the handle axis 46a include an angle which has a value in a value range between 60 degrees and 90 degrees or another value that appears appropriate to the person skilled in the art. It is also conceivable that the drive and working axis 44a and the handle axis 46a are arranged in alignment with each other.
  • the handheld power tool 12a comprises a switching unit which is provided to switch on and / or off the drive unit 38a and / or to set a rotational speed of the handheld power tool 12a and / or a torque of the handheld power tool 12a.
  • the switching unit has an actuator 48a provided for operation by a user.
  • the actuator 48a is formed as a pressure switch.
  • the hand tool 12a comprises a torque limiter which is provided to set a maximum torque transmitted from the drive unit 38a to the output shaft 32a.
  • the torque limiter includes an adjustment ring 50a provided for operation by the user.
  • the hand tool 12a comprises a gear unit 52a.
  • the gear unit 52a is provided to translate a rotational speed and / or a torque of the drive unit 38a into a rotational speed and / or a rotational speed of the tool holder 18a.
  • the transmission unit 52a has a plurality of transmission gears having a different transmission ratio.
  • the hand tool 12a comprises a gear changeover, which is intended to set a transmission gear.
  • the gear shift includes an actuator 54a provided for operation by the user.
  • the actuating element 54a is formed in the present embodiment as a sliding element.
  • the hand tool 12a includes a reversing direction provided to set a rotational direction of the output shaft 32a.
  • the direction of rotation switching has an actuating element 56a provided for operation by the user.
  • the actuator 56a is formed in the present embodiment as a sliding member.
  • the hand tool 12a includes a tool housing unit 58a which encloses and supports the drive unit 38a and the gear unit 52a.
  • the tool housing unit 58a extends over the drive and work area 40a and the grip area 42a.
  • the hand tool 12a is provided for a power supply by a battery device 60a.
  • the hand tool 12a has a battery interface unit for the battery device 60a.
  • the battery interface unit for the battery device 60a is arranged on an end of the grip region 42a facing away from the drive and work region 40a.
  • the battery interface unit is provided to detachably connect a housing unit 62a of the battery device 60a to the tool housing unit 58a of the hand tool 12a in a tool-less detachable manner.
  • the handheld power tool 12a comprises a machine interface 64a, which is provided for securing the accessory device 10a in a preferably rotationally secured manner (cf. FIG. 3 ).
  • the machine interface 64a has a fastening element 66a arranged on an end face of the tool housing unit 58a.
  • the fastening element 66a is at least partially sleeve-shaped and / or annular.
  • the fastening element 66a has on an outer circumference at least one blocking element 68a and at least two retaining elements 70a, 72a.
  • the locking element 68a preferably has at least one locking toothing and the at least two retaining elements 70a, 72a are formed in the present embodiment in the manner of bayonets to form a bayonet connection.
  • the machine interface 64a is provided for a mechanical connection of the accessory device 10a.
  • the coupling unit 14a of the accessory device 10a is provided for releasable mechanical coupling with the machine interface 64a.
  • the output shaft 32a emerges from the handheld power tool 12a in the region of the machine interface 64a.
  • the output shaft 32a has an axis of rotation which corresponds to the drive and working axis 44a of the power tool 12a.
  • the output shaft 32a forms the insertion tool receptacle at a free end 16a of the power tool 12a.
  • the insert tool receptacle 16a is intended to hold a replaceable insert tool, such as a tool bit, preferably with a screwdriver blade, or a hexagon attachment.
  • the insert tool receptacle 16a is designed as a polygonal inner receptacle and has a polygonal cross section.
  • the insert tool receptacle 16a is designed as a hexagonal inner receptacle, for example for receiving a HEX drill or a screw bit.
  • the coupling unit 14a of the accessory device 10a is intended to cooperate with the machine interface 64a of the hand tool 12a.
  • the coupling unit 14a and the machine interface 64a are provided to connect the tool housing unit 58a of the hand tool 12a and the housing unit 62a of the accessory device 10a to be detachably connected to one another without tools.
  • the machine interface 64a and the coupling unit 14a each have a form-locking region.
  • the form-fitting regions are provided to form a positive connection with each other.
  • the machine interface 64a and the coupling unit 14a each have a traction region.
  • the adhesion areas are provided for a non-positive connection with each other.
  • the coupling unit 14a and the machine interface 64a are intended to lock together.
  • the coupling unit 14a and the machine interface 64a form a bayonet connection in the present embodiment.
  • the coupling unit 14a has an actuating element 74a, which is provided to release a locking of the coupling unit 14a with the machine interface 64a of the hand tool 12a.
  • the tool holder 18a is provided for receiving an insert tool, for example a tool bit, a drill, in particular a round shank drill, a stirrer, a grinding tool, a brush or any other skilled in the art appearing insert tool.
  • the tool holder 18a is formed as a chuck.
  • the catch impact unit 20a comprises a drive element 22a, which has a connection region 24a, which is connected in a state of the insertion tool receptacle connected to the handheld power tool 12a by means of the coupling unit 14a 16a of the power tool 12a drive technology is connectable (see. FIG. 4 ).
  • the drive element 22a is provided to transmit a torque and / or a rotational movement from the output shaft 32a of the hand tool 12a to the tool holder 18a.
  • the connection region 24a is arranged on an end of the drive element 22a facing away from the tool holder 18a.
  • the connection region 24a is formed corresponding to the insertion tool receptacle 16a of the handheld power tool 12a.
  • the connecting region 24a has a cross section which is formed corresponding to the cross section of the insert tool receptacle 16a of the handheld power tool 12a.
  • the connecting portion 24a has an outer periphery in the form of a regular hexagon in the present embodiment. In the state connected to the power tool 12a, the connection portion 24a partially engages with the tool receptacle 16a.
  • the connection region 24a and the insertion tool receptacle form a plug connection in the present exemplary embodiment.
  • the connecting region 24a has a drive receiving, and the output shaft 32a engages in a connected state in the drive receiving the connecting portion 24a.
  • the drive element 22a of the detent impact unit 20a is designed as a spindle, which is axially movable and rotatably connected to an insertion tool receptacle 16a of the power tool 12a connectable.
  • the spindle oscillates in a percussion drilling operation in the axial direction in the insertion tool receptacle 16a of the power tool 12a.
  • the drive element 22a is firmly connected to the tool holder 18a.
  • the drive element 22a is in the form of a shaft. An end of the drive element 22a facing away from the coupling unit 14a engages in the tool receptacle 18a.
  • the drive element 22a has an annular collar 76a, which in a mounted state is in contact with a surface of the tool holder 18a facing the coupling unit 14a.
  • the collar 76a is provided to transmit an axial force from the tool holder 18a to the drive member 22a.
  • the tool holder 18a covers the detent impact unit 20a at least partially radially.
  • the accessory device 10a has a common cross-section of the tool holder 18a and the detent impactor unit 20a on.
  • the catch impact unit 20a partially engages in the tool holder 18a.
  • the tool holder 18a has a substantially cylindrical recess 78a, in which the catch impact unit 20a is at least partially arranged.
  • the catch impact unit 20a has a spring element 26a, which is provided to switch the striking drive in response to a contact pressure.
  • the spring element 26a is provided to provide a spring force which is directed opposite to a contact pressure.
  • the spring element 26a is operatively arranged between the tool holder 18a and the coupling unit 14a.
  • the spring element 26a is provided to increase a distance of the tool holder 18a from the coupling unit 14a.
  • a contact pressure is less than the spring force of the spring element 26a and the accessory device 10a has a maximum axial extent.
  • the tool holder 18a and the coupling unit 14a have a maximum distance from each other.
  • the detent striker unit 20a has a first detent element 80a and a further detent element 82a.
  • the detent elements 80a, 82a are not in contact with each other at a maximum axial extent of the accessory device 10a.
  • the detent striker unit 20a is turned off.
  • an insert tool disposed in the tool holder 18a comes into contact with the workpiece.
  • the operator generates a contact pressure and pushes the drive element 22a against the spring force of the spring element 26a deeper into the insert tool receptacle 16a.
  • the tool holder 18a moves in the direction of the coupling unit 14a.
  • the axial extent of the accessory device 10a decreases.
  • the detent members 80a, 82a of the detent striker unit 20a come into contact with each other, and the detent striker unit 20a is turned on.
  • the detent impact unit 20a has two switching states.
  • the detent impact unit 20a has a first switching state for a drilling operation and another switching state for a percussion drilling operation.
  • the drive element 22a drives the tool holder 18a in a purely rotating manner.
  • the first switching state is provided, for example, for drilling, stirring or grinding.
  • the beating drive is switched off in the first switching state.
  • the drive element 22a drives the tool holder 18a in a rotating and striking manner.
  • the detent striker unit 20a has a locking unit 28a for a strike shutdown.
  • the locking unit 28a is provided to fix in at least one switching state an axial position of the tool holder 18a relative to the coupling unit 14a.
  • the locking unit 28a is provided to fix, in at least one switching state, an axial position of the drive element 22a designed as a spindle relative to the coupling unit 14a.
  • the locking unit 28a has an axially movable holding element 84a, which is intended to limit an axial movement range of the drive element 22a.
  • the detent impact unit 20a is designed without a device for a striking shutdown.
  • the detent striker unit 20a is intended to be turned on only depending on a contact pressure.
  • the accessory device 10a is provided in such an embodiment constantly to a Schlagbohr memori.
  • the accessory device 10a has a bearing unit 86a which rotatably supports the drive element 22a and the holding element 84a against each other.
  • the bearing unit 86a has an inner bearing ring 88a, which is fixedly connected to the drive element 22a.
  • the bearing unit 86a has an outer bearing ring 90a which has an axial contact surface with the retaining element 84a.
  • the outer bearing ring 90a is at least one side, at least positively connected to the retaining element 84a. It is conceivable that the outer bearing ring 90a is fixedly connected to the holding element 84a.
  • the inner bearing ring 88a of the bearing unit 86a is connected to the drive element 22a at least on one side, at least in a form-fitting manner.
  • the inner bearing ring 88a is fixedly connected to the drive member 22a.
  • the bearing unit 86a is formed in the present embodiment as a rolling bearing.
  • the rolling bearing has a plurality of rolling elements 92a, 94a.
  • the rolling elements 92a, 94a are formed in the present embodiment as balls.
  • the holding member 84a is in the present embodiment designed as a deep-drawn part.
  • the holding element 84a is cup-shaped in the present embodiment.
  • the housing unit 62a of the accessory device 10a has a housing element 96a which is provided to support the latch impact unit 20a against the insertion tool receptacle 16a of the handheld power tool 12a in at least one operating state.
  • the housing element 96a is provided to transmit a shock pulse to the insert tool receptacle 16a of the handheld power tool 12a in at least one operating state.
  • the housing element 96a forms engagement means 98a of the coupling unit 14a in the present exemplary embodiment. It is conceivable that the housing element 96a is formed separately from the coupling unit 14a and is intended to transmit a shock pulse to the coupling unit 14a in at least one operating state.
  • the locking unit comprises a locking element 100a, which is provided to limit at least in one operating state an axial movement range of the tool holder 18a.
  • the locking element 100a is provided to axially fix the tool holder 18a in a locked state.
  • the locking element 100a is intended to cooperate with the retaining element 84a.
  • the retaining element 84a is operatively disposed between the locking element 100a and the drive element 22a.
  • the locking member 100a is operatively disposed between the drive member 22a and the housing member 96a.
  • the locking unit comprises an actuator 102a provided for operation by the operator.
  • the operating member 102a is formed integrally with the locking member 100a.
  • the impact shutdown transmits an axial force from the tool holder 18a via the holding member 84a, the locking member 100a and the housing member 96a on the tool insertion 16a of the power tool 12a.
  • the first of the detent elements 80a is formed as a stator disk.
  • the further of the detent elements 82a is formed as a rotor disk.
  • the first Locking member 80a is rotatably connected in a mounted state with the housing unit 62a of the accessory device 10a.
  • the first detent element 80a is in an operating state by means of the coupling unit 14a rotatably connected to the tool housing unit 58a of the power tool 12a.
  • the first detent member 80a is fixedly connected to the housing member 96a.
  • the first detent element 80a has an annular base 104a.
  • the main body 104a has a central opening through which engages in a mounted state formed as a spindle drive element 22a.
  • An outer diameter of the spindle corresponds to an inner diameter of the main body 104a.
  • the first detent element 80a has an annular detent region 106a on a side facing the tool holder 18a, which is arranged concentrically with the main body 104a.
  • the detent region 106a and the base body 104a have a common inner diameter.
  • the detent portion 106a has a serration along a path in the circumferential direction.
  • the detent portion 106a has a plurality of inclined surfaces each having a pitch in the circumferential direction.
  • the further detent element 82a is non-rotatably connected in an assembled state with the drive element 22a designed as a spindle.
  • the further detent element 82a has an annular base body 108a.
  • the main body 108a has a central opening through which engages in a mounted state formed as a spindle drive element 22a.
  • An outer diameter of the spindle corresponds to an inner diameter of the main body 104a.
  • the rotor detent disk has an annular detent region 110a on a side facing away from a tool receptacle 18a, which is arranged concentrically to the main body 108a.
  • the detent region 110a and the main body 108a have a common inner diameter.
  • the detent portion 110a has a serration along a path in the circumferential direction.
  • a serration direction of the detent portion 110a of the other detent member 82a is opposed to a prong direction of the detent portion 106a of the first detent member 80a.
  • the detent portion 110a has a plurality of inclined surfaces each having a pitch in the circumferential direction.
  • the detent portions 106a, 110a have a common inner diameter and a common outer diameter.
  • the rest areas 106a, 110a are arranged facing each other in an assembled state.
  • the detent regions 110a engage in each other and the oblique surfaces of the detent region 106a of the first detent element 80a come into contact with correspondingly formed oblique surfaces of the further detent element 82a.
  • the inclined surfaces slide over each other and increase a distance of the first detent element 80a from the further detent element 82a.
  • the inclined surfaces slide over one another and increase a distance of the tool holder 18a from the coupling unit 14a.
  • In a rotational position are in each case opposite edges, which limit the inclined surfaces, and the inclined surfaces lose contact.
  • a distance of the detent elements 80a, 82a decreases due to the contact pressure.
  • the detent portions 106a, 110a strike each other and the first detent element 80a experiences an axial impact by the further detent element 82a.
  • FIG. 5 a further embodiment of the invention is shown.
  • the following descriptions and the drawings are essentially limited to the differences between the exemplary embodiments, with reference in principle to the same reference components, in particular with respect to components with the same reference numerals, to the drawings and / or the description of the other embodiments, in particular FIGS. 1 to 4 , can be referenced.
  • To distinguish the embodiments of the letter a is the reference numerals of the embodiment in the FIGS. 1 to 4 readjusted.
  • the letter a is replaced by the letter b.
  • FIG. 5 shows a schematic representation of another embodiment of an accessory device 10b, which includes a Raschentschtechnikinheit 20b.
  • the accessory device 10b is provided for an arrangement on a power tool, not shown, and comprises a coupling unit, which is provided for coupling to the power tool.
  • the coupling unit is provided for coupling to an insertion tool receptacle of the handheld power tool.
  • the accessory device 10b comprises a tool holder 18b for receiving an insertion tool.
  • the notch impact unit 20b is provided in at least one operating state to generate a shock pulse to a striking drive of the tool holder 18b.
  • the accessory device 10b comprises a housing unit on which the detent impact unit 20b is arranged.
  • the tool holder 18b is mounted axially movably on the housing unit analogous to the preceding embodiment.
  • the tool holder 18b is provided for receiving an insert tool.
  • the tool holder 18b is formed as a chuck.
  • the accessory device 10b comprises a gear unit 30b, which is provided to translate a rotational speed and / or a torque of an output shaft 32a of the portable power tool into a rotational speed and / or a torque of the tool holder 18b.
  • the gear unit 30b is formed in the present embodiment as a two-stage planetary gear and includes a first gear stage 112b and a further gear stage 114b. It is also conceivable that the gear unit 30b has only a single gear stage.
  • the first gear stage 112b includes an input sun gear 116b, a planetary carrier 118b, a plurality of planetary elements 120b, 122b, and a ring gear 124b fixed to the housing.
  • the further gear stage 114b includes a sun gear 126b rotatably connected to the planet carrier 118b of the first gear stage 112b, a planet carrier 130b, a plurality of planetary elements 132b, 134b, and a switching ring gear 136b.
  • the transmission unit 30b has two shiftable gears. In a first of the gears, the switching ring gear 136b is fixed to the housing. In the present embodiment, the GmbHhohlrad 136b engagement means not shown in detail, which are provided in the first gear to a positive connection with the housing unit of the accessory device 10b. In another of the gears, the switching ring gear 136b is rotatably connected to the planet carrier 118b of the first gear stage 112b.
  • the planetary elements 120b, 122b of the further gear stage 112b are engaged with the switching ring gear 136b.
  • the second gear stage 114b is short-circuited in the further gear.
  • the planet carrier 130b of the further gear stage 114b has a same speed as the sun gear 126b in the further gear.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
EP15203044.1A 2015-02-04 2015-12-30 Dispositif auxiliaire Active EP3053708B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19167348.2A EP3539725B1 (fr) 2015-02-04 2015-12-30 Système de machine-outil portative comprenant une machine-outil portative et un accessoire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015201921.7A DE102015201921A1 (de) 2015-02-04 2015-02-04 Zubehörvorrichtung

Related Child Applications (2)

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EP19167348.2A Division-Into EP3539725B1 (fr) 2015-02-04 2015-12-30 Système de machine-outil portative comprenant une machine-outil portative et un accessoire

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Families Citing this family (3)

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Publication number Priority date Publication date Assignee Title
DE102016214616A1 (de) * 2016-08-05 2018-02-08 Robert Bosch Gmbh Vorsatzvorrichtung
DE102018209307A1 (de) 2017-06-22 2018-12-27 Robert Bosch Gmbh Werkzeugbasismodul
CN114310802B (zh) * 2020-09-29 2024-06-04 莱克电气绿能科技(苏州)有限公司 一种手持式工具机及具有该工具机的手持式电动工具

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4489792A (en) * 1981-05-28 1984-12-25 Fahim Atef E F Hammer drill adapter
US5711380A (en) * 1996-08-01 1998-01-27 Chen; Yueh Rotate percussion hammer/drill shift device
GB2430907A (en) * 2005-10-10 2007-04-11 Bosch Gmbh Robert Manual machine tool attachment having impact screwdriver function
DE102014205555A1 (de) * 2013-04-03 2014-10-09 Robert Bosch Gmbh Werkzeugvorsatz für eine Handwerkzeugmaschine
EP2803447A1 (fr) * 2013-05-14 2014-11-19 Robert Bosch Gmbh Dispositif d'outil manuel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4489792A (en) * 1981-05-28 1984-12-25 Fahim Atef E F Hammer drill adapter
US5711380A (en) * 1996-08-01 1998-01-27 Chen; Yueh Rotate percussion hammer/drill shift device
GB2430907A (en) * 2005-10-10 2007-04-11 Bosch Gmbh Robert Manual machine tool attachment having impact screwdriver function
DE102014205555A1 (de) * 2013-04-03 2014-10-09 Robert Bosch Gmbh Werkzeugvorsatz für eine Handwerkzeugmaschine
EP2803447A1 (fr) * 2013-05-14 2014-11-19 Robert Bosch Gmbh Dispositif d'outil manuel

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EP3539725A1 (fr) 2019-09-18
EP3539725B1 (fr) 2021-02-17
DE102015201921A1 (de) 2016-08-04
CN205799420U (zh) 2016-12-14
EP3053708B1 (fr) 2019-05-15

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