EP1727650B1 - Machine-outil portative - Google Patents

Machine-outil portative Download PDF

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Publication number
EP1727650B1
EP1727650B1 EP05707914.7A EP05707914A EP1727650B1 EP 1727650 B1 EP1727650 B1 EP 1727650B1 EP 05707914 A EP05707914 A EP 05707914A EP 1727650 B1 EP1727650 B1 EP 1727650B1
Authority
EP
European Patent Office
Prior art keywords
power tool
gear
handheld power
operating mode
tool according
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.)
Expired - Fee Related
Application number
EP05707914.7A
Other languages
German (de)
English (en)
Other versions
EP1727650A1 (fr
Inventor
Andreas Strasser
Markus Leupert
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 EP1727650A1 publication Critical patent/EP1727650A1/fr
Application granted granted Critical
Publication of EP1727650B1 publication Critical patent/EP1727650B1/fr
Expired - Fee Related 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
    • B25D—PERCUSSIVE TOOLS
    • B25D16/00—Portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D16/006—Mode changers; Mechanisms connected thereto
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D2216/0007—Details of percussion or rotation modes
    • B25D2216/0015—Tools having a percussion-only mode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D2216/0007—Details of percussion or rotation modes
    • B25D2216/0023—Tools having a percussion-and-rotation mode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D2216/0007—Details of percussion or rotation modes
    • B25D2216/0046—Preventing rotation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D2216/0084—Mode-changing mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/141—Magnetic parts used in percussive tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/141—Magnetic parts used in percussive tools
    • B25D2250/145—Electro-magnetic parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/221—Sensors

Definitions

  • the invention is based on a hand tool, in particular a hammer drill, according to the preamble of claim 1.
  • DE 38 26 213 A1 discloses a hand tool with the features of the preamble of claim 1.
  • the tool holder is rigidly connected to a rotary or drive sleeve, which in turn is rotatably entrained by a seated on the rotary sleeve output gear of a drive gear.
  • the axially limited held in the tool holder tool is applied in the axial direction of a percussion that exerts a punch or striker pulse-shaped shocks on the shaft end of the tool.
  • the portable power tool can be operated either in the operating mode "Impact drilling” or in the "Chiseling" operating mode. In both modes, the tool is acted upon by the hammer mechanism.
  • a mode switch which has a manually operated knob and a displaceable by the knob shift fork.
  • the shift fork carries a coupling ring which rigidly couples the rotary sleeve in a first displacement position with the driven gear of the drive gear and rigidly connected in a second displacement position with the machine housing. In an intermediate position of the coupling ring engages neither the driven gear still on the machine housing, so that the rotary sleeve and thus the tool holder is driven freely freely rotatable.
  • a known hand tool machine with rotating tool ( EP 0 771 619 B1 ) is installed a system with which such, so-called. Uncontrolled blocking case detected and thereby caused rotational movement of the machine housing is braked and limited.
  • the system comprises a sensor which detects a motion variable characterizing the spatial dimensioning of the handheld power tool as a whole, eg the acceleration, the rotational speed or a rotary travel of the machine housing, an operator who, after reaching or exceeding a predetermined threshold value, by the motion quantity supplied by the sensor Control signal generated, and an actuator that interrupts the drive for the rotating tool in response to the control signal of the operator.
  • the actuator is designed as a separating clutch in the drive train of the tool and / or as a switch for switching off the drive motor and / or as a clutch for abrupt connection of the drive train to the machine housing.
  • the hand tool of the invention with the features of claim 1 has the advantage that by moving the mode switch from a manual knob to an electronically controlled actuator, an operator-independent switching between the modes is performed, which excludes switching during operation of the machine and thus Improper operation and wear of the components reduced, which leads to an overall lifetime of the machine.
  • the operating mode is preselected by the operator via a keyboard arranged on the machine housing, in a more luxurious manner
  • the mode setting is made automatically by a sensor senses the type of tool present in the tool holder and a corresponding identification signal to the electronic control unit, which in turn sets the associated mode.
  • a manually operated electrical switch for switching on and off of the machine is arranged on the machine housing, which is designed for additional safety for the operator during drilling operation as so-called “deadman switch”, ie in the operating mode " Impact drilling "with a rotating tool must be held manually against the force of a return spring in its closed position.
  • the switch is released, the switch is opened and the machine is stopped.
  • the electric switch is associated with a controlled by the controller solenoid whose magnetic force is greater than the spring force of the return spring according to an advantageous embodiment of the invention .
  • the control unit is designed to provide an energizing current to the electromagnet during the non-rotary tooling mode, which maintains the electrical switch in the closed position even if the operator does not operate the switch.
  • the electrical switch is designed so that it can be manually lifted to transfer to its open position of the energized electromagnet, so that the machine can be turned off at any time even in pure impact mode. Since with the opening of the electric switch and the power supply to the electromagnet is interrupted, it can only be energized again upon subsequent closing of the electrical switch.
  • the electronic signal for switching the operating modes can also be used in addition to activate the known per se booster function in the power tool.
  • a booster function regulates the electric drive motor when switching to pure impact mode.
  • a sensor connected to the control unit for detecting a tool blockage in the operating mode with rotating tool holder is arranged on the machine housing and the control unit is designed such that when a sensor signal occurs, it switches off the electric motor and, on the other hand, switches the actuator to switch over controls the mode with fixed to the machine housing tool holder or for setting a freewheel of the tool holder.
  • Hand-held power tool shown schematically in side view is designed as a hammer drill, which can be operated either in a "percussion drilling” mode and in a "chiselling" mode.
  • the hand tool has a machine housing 10, on which a bow handle 11 is formed for holding the machine.
  • a tool holder 12 is integrated in the machine housing 10 in which a removable tool 13 rotatably and axially limited slidably receivable.
  • the tool 13 is a hammer drill and hammer or chisel a chisel tool.
  • the tool holder 12 is rigidly coupled to a rotatably mounted in the machine housing 10 drive sleeve 14 which is rotationally driven by a here schematically illustrated electric motor 19 via a gear train 15 designed here as a bevel gear.
  • the gear transmission 15 has a drive wheel 16 rotatably received on the Anbreteshülse 14 and a meshing with the driven gear 16 bevel pinion 17.
  • the bevel pinion 17 is non-rotatably mounted on an output shaft 18 which is driven either directly or via an intermediate gear 43 of the electric motor 19.
  • a percussion mechanism is driven by the electric motor 19, which via a in the drive sleeve 14 axially displaceably guided percussion piston and beater or striker with the interposition of an air cushion Blows on the front end of the held in the tool holder 12 tool 13 performs.
  • An exemplary construction of the impact mechanism is in the DE 28 20 128 A1 described.
  • a mode changeover switch 20 For setting the operating modes, a mode changeover switch 20 is provided, which has an axially displaceable coupling element 21 and an actuator 22 causing its displacement.
  • the coupling element 21 is designed such that in a first displacement position it couples the output gear 16 of the gear transmission 15 rigidly to the drive sleeve 14 and fixes the drive sleeve 14 on the machine housing 10 in a second displacement position in a rotationally fixed manner.
  • the actuating member 22 has an electrical actuator 23 and an electronic control unit 24 controlling the actuator 23.
  • the electric actuator 23 is designed as an electromagnet 25.
  • the electric actuator 23 may also be an electric servomotor.
  • the actuated by the actuator 23 coupling element 21 includes a shift fork 26 and an attached to the shift fork 26 intermediate ring 27 with internal teeth 271 (FIG. Fig. 2 ).
  • the shift fork 26 is displaceable during energization of the electromagnet 25 against the force of a return spring 28.
  • the return spring 28 designed here as a compression spring is supported, on the one hand, on the shift fork 26 and, on the other hand, on a holder 29 fixed on the machine housing 10.
  • the holder 29 encloses the drive sleeve 14 with an integrally molded holder sleeve 291.
  • the holder sleeve 291 carries on its the output gear 16 end facing an outer annular tooth portion 30.
  • the output gear 16 carries on its holder 29 facing end portion an outer sprocket 31, the tooth pitch the pitch of the tooth portion 30 corresponds to the holder sleeve 291.
  • a gear wheel 32 with external teeth is rotatably mounted on the drive sleeve 14, the pitch of which in turn corresponds to the tooth pitch of tooth portion 30 and ring gear 31.
  • the gear 32 is the front side of the holder sleeve 291 and the output gear 16 and has an axial width which is slightly larger than the axial width of the intermediate ring 27.
  • the intermediate ring 27 engages with its internal toothing 271 in the outer toothing of the gear 32 and, depending on the shift in addition to the ring gear 31 on the driven gear 16 or in the tooth portion 30 on the holder sleeve 291 dive.
  • the output gear 16 is rotatably connected via the intermediate ring 27 with the gear 32, so that the output gear 16 is rotatably connected to the drive sleeve 14
  • the gear 32 is rigidly connected to the tooth portion 30, so that the gear 32 rotatably supporting drive sleeve 14 is held non-rotatably on the holder 29.
  • the power tool In the first displacement position of the intermediate ring 27, the power tool operates in the "hammering" mode in which both the rotary drive and the percussion mechanism is effective, and in the second displacement position of the intermediate ring 27, the power tool operates in the "chiseling" mode in which Tool 13 is driven exclusively by the percussion.
  • To the mode switch 20 still belongs to the machine housing 10 arranged keyboard 33 with which the desired mode can be manually selected by the operator.
  • the keyboard 33 is connected to the control unit 24 via an in Fig. 1 dashed lines indicated connecting line 34 connected.
  • the connecting line of the control unit 24 with the electromagnet 25 is indicated at 35.
  • an electrical switch 36 which is manually actuated by a tilt button 37, in such a way that with Pressing the tilt button 37, the switch 36 is closed and opens the switch 36 by releasing the tilt button 37.
  • the Reset of the tilting button 37 takes place via a compression spring 38.
  • the power supply of the control unit 24 also occurs.
  • the pre-selection signal for the desired mode of operation of the handheld power tool fed in by the keyboard 33 is processed in the control unit 24 and leads to the energizing or non-energizing of the electromagnet 25 as required. Chisel "preselected, the electromagnet 25 is energized, and this transfers the shift fork 26 with intermediate ring 27 against the force of the return spring 28 in the in Fig. 1 and 2 shown displacement position in which the intermediate ring 27, the drive sleeve 14 on the holder sleeve 291 defines non-rotatably.
  • the switched-on electric motor 19 drives exclusively the striking mechanism, while the output gear 16, which is also set in rotation by the electric motor 19, rotates freely on the drive sleeve 14. If the mode "percussion drilling" preselected, the electromagnet 25 is de-energized by the control unit 24, and the return spring 28 pushes the shift fork 26 with intermediate ring 27 in Fig. 1 and 2 to the right until the internal teeth 271 of the intermediate ring 27 dips into the ring gear 31 on the output gear 16. Now, the output gear 16 via intermediate ring 27 and sprocket 32 rotatably connected to the drive sleeve 14, and the tool 13 is now also rotatably driven via the drive sleeve 14 and the tool holder 12.
  • the electrical switch 36 Since in the operating mode "chiselling" the deadman function of the electrical switch 36 is not required for safety reasons and is not desired, the electrical switch 36 is associated with an electromagnet 39 which is connected via a connecting line 40 to the control unit 24.
  • the electromagnet 39 is designed so that it generates a magnetic force when energized, which is greater than the restoring force of the compression spring 38. Is on the Keyboard 33 selected the operating mode "chiselling", the control unit 24 initiates the energization of the electromagnet 39, which holds the electric switch 36 against the force of the compression spring 38 in the closed position, even if the tilt button 37 of the electrical switch 36 is released.
  • the tilting key 37 is designed in the manner of an angle lever with a longer lever arm 371 and a shorter lever arm 372. If the operator exerts a pressure force on the longer lever arm 71 of the tilting button 37 by means of a finger, then the electrical switch 36 is brought into its closed position in which it is held in the operating mode "chiseling" by the energized electromagnet 39. If a pressing force is exerted on the shorter lever arm 372 by the operator, the electrical switch 36 is returned to its open position against the magnetic force of the electromagnet 39 and the power supply to the electric motor 19 is interrupted.
  • the electronic switching of the modes can be performed not only by the preselection of the operator, but also automatically according to the type of tool used in the tool holder 12 13.
  • a sensor 41 is used in the tool holder 12, which detects both the presence of a Tool 13 in the tool holder 12 as well as the type of tool 13 detects, so it can determine whether it is a percussion drill or a chisel tool.
  • the sensor 41 is connected via the connecting line 42 to the electronic control unit 24.
  • the keyboard 33 with connecting line 34 is omitted. If now the electric switch 36 of the power tool is closed, the sensor 41 sends a tool classification signal to the control unit 24.
  • the electric control unit 24 initiates energization of the electromagnet 25, and the "chiseling" mode is set in the drive system, ie only the percussion mechanism is driven by the electric motor 19. Is that from the sensor 41 to the Control unit 24 supplied classification signal characteristic of a percussion drill, so the power is not triggered by the control unit 24 of the electromagnet 25.
  • the return spring 28 provides for setting the operating mode "impact drilling" in the drive system. Of the electric motor 19, both the hammer mechanism and the drive sleeve 14 is driven.
  • Fig. 1 is shown schematically, the power connection of the electric motor 19 to the battery 44 via the switching contact 451 of an electromagnetic relay 45, which is arranged in the connecting line 46 of the electric motor 19 and battery 44.
  • the relay 45 is controlled by the control unit 24. As long as the electrical switch 36 is closed, the relay 45 is energized and the relay contact 451 is closed.
  • the mode switch 20 is additionally used to provide the hand tool with a safety function for the uncontrolled lock case.
  • This blocking case occurs when the rotating tool is extremely slowed down or even blocked by an operating or workpiece error and thereby a strong housing rotation of the power tool is triggered, which can lead to injury to the operator.
  • a sensor 47 is arranged in the machine housing 10, which senses a tool blockage and outputs a corresponding output signal via a connecting line 48 to the control unit 24.
  • the sensor detects a movement quantity of the machine housing 10, for example its acceleration or speed or a rotational distance. This amount of movement is compared in the control unit 24 with a predetermined threshold.
  • the control unit 24 switches the relay 45 de-energized so that the relay contact 451 opens and the electric motor 19 is switched off.
  • the control unit 24 causes current to be supplied to the electromagnet 25.
  • the energized electromagnet 25 shifts the shift fork 26 counter to the force of the return spring 28 until the intermediate ring 27 connected to it with its internal toothing 271 is disengaged Engage with the ring gear 31 on the output gear 16, so that the output gear 16 rotates freely on the drive sleeve 14 and the drive train for rotation of the tool 13 is interrupted.

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

Claims (15)

  1. Machine-outil portative, notamment marteau percuteur, comportant un boîtier de machine (10), un réceptacle d'outil (12) intégré dans celui-ci, qui est fixé de manière à pouvoir être entrainé en rotation au moyen d'un moteur électrique (19) dans un premier mode de fonctionnement, et de manière à être immobile en rotation sur le boîtier de machine (10) dans un deuxième mode de fonctionnement, et comportant un commutateur de mode de fonctionnement (20) qui possède un élément de couplage (21) pouvant être amené à coulisser de manière à activer les modes de fonctionnement et un organe d'actionnement (22) provoquant ledit coulissement, caractérisée en ce que l'organe d'actionnement comporte un actionneur (23) électrique et une unité de commande électronique (24) commandant l'actionneur (23), dans laquelle le commutateur de mode de fonctionnement (20) comporte une touche (33) de sélection de mode de fonctionnement disposée sur le boîtier de machine (10), laquelle touche est raccordée à l'unité de commande (24).
  2. Machine-outil portative selon la revendication 1, caractérisée en ce que le commutateur de mode de fonctionnement (20) comporte un capteur (41) raccordé à l'unité de commande (24) permettant de classer un outil (13) inséré dans le réceptacle d'outil (12) et en ce que l'unité de commande (24) commande l'actionneur (23) en fonction du signal de classification du capteur (41) pour régler le mode de fonctionnement exigé pour l'outil (13) présent dans le réceptacle d'outil (12).
  3. Machine-outil selon l'une quelconque des revendications 1-2, caractérisée en ce que l'actionneur (23) est un moteur de positionnement électrique.
  4. Machine-outil selon l'une quelconque des revendications 1-2, caractérisée en ce que l'actionneur (23) est un électroaimant (25).
  5. Machine-outil selon la revendication 4, caractérisée en ce que l'organe d'actionnement (22) comporte un ressort de rappel (28) exerçant une force de rappel opposée à la force magnétique de l'électroaimant (25).
  6. Machine-outil selon l'une quelconque des revendications 1-5, caractérisée en ce que le réceptacle d'outil (12) est couplé de manière rigide à un manchon d'entrainement (14) monté tournant dans le boîtier de machine (10), en ce qu'une roue entraînée (16) d'une transmission par roue dentée (15) couplée au moteur électrique (19), de préférence d'un engrenage à roues coniques, repose tournante sur le manchon d'entraînement (14), et en ce qu'une roue dentée (32) repose axialement solidaire en rotation et de manière directement adjacente à la roue entraînée (16), en ce que la roue entraînée (16) comporte une couronne dentée (31) dont la répartition des dents concorde avec celle de la roue dentée (32), en ce qu'une section dentée (30) ayant la même répartition de dents est disposée sur le boîtier (10), de manière tournée vers la roue dentée (32) en enserrant le manchon d'entraînement (14), en ce que l'élément de couplage (21) possède une bague intermédiaire coulissant axialement (27) ayant des dents intérieures (271), qui est réalisée de manière à pouvoir être sélectivement montée de manière engrenée avec la roue dentée (32) et la section dentée (30) sur le boîtier de machine (10) ou avec la roue dentée (32) ou la roue dentée (32) et la couronne dentée (31) sur la roue entraînée (16).
  7. Machine-outil portative selon la revendication 6, caractérisée en ce que l'élément de couplage (21) comporte une fourche de commutation (26) actionnée par l'actionneur (23), sur laquelle est fixée la bague intermédiaire (27) et sur laquelle s'engage le ressort de rappel (28).
  8. Machine-outil portative selon l'une quelconque des revendications 1-7, caractérisée en ce qu'un commutateur électrique (36) devant être actionné manuellement est disposé sur le boîtier (10) de manière à activer et désactiver la machine, lequel commutateur est conçu de manière à ce qu'il doive être maintenu manuellement en opposition à la force un ressort de rappel (38) dans le mode de fonctionnement dans lequel le réceptacle d'outil (12) est entraîné en rotation.
  9. Machine-outil portative selon la revendication 8, caractérisée en ce qu'un électroaimant (39) commandé par le dispositif de commande (24) est associé au commutateur électrique (36), la force magnétique dudit électroaimant étant supérieure à celle de la force de rappel du ressort de rappel (38), et en ce que l'unité de commande (24) est conçue de manière à fournir, pendant le mode de fonctionnement dans lequel le réceptacle d'outil (12) est fixé au boîtier de machine (10), un courant d'excitation destiné à l'électroaimant (39) associé au commutateur électrique (36).
  10. Machine-outil portative selon la revendication 9, caractérisée en ce que le commutateur électrique (36) est réalisé de manière à ce qu'il puisse être retiré manuellement pour être amené à sa position ouverte par l'électroaimant (39) alimenté en courant.
  11. Machine-outil portative selon la revendication 10, caractérisée en ce que le commutateur électrique (36) comporte une touche basculante (37) réalisée à la manière d'un levier coudé ayant des bras de levier long et court (371, 372) et est réalisée de manière à ce que le commutateur (36) puisse être amené à sa position ouverte par une force de pression exercée sur le bras de levier long (371) à sa position fermée et par une force de pression exercée sur le bras de levier court (372) en s'opposant à la force magnétique de l'électroaimant (39) alimenté en courant à sa position ouverte.
  12. Machine-outil portative selon l'une quelconque des revendications 1-11, caractérisée en ce qu'un capteur (47) raccordé à l'unité de commande (24) est disposé sur le boîtier de machine (10) pour détecter un blocage de l'outil dans le mode de fonctionnement dans lequel le réceptacle d'outil (12) est entraîné en rotation et en ce que l'unité de commande (24) est conçue de manière, d'une part, à commuter sans courant le moteur électrique (19) lors de l'apparition d'un signal de capteur et d'autre part, à commander l'actionneur (23) pour basculer dans le mode de fonctionnement dans lequel le réceptacle d'outil (12) est fixé au boîtier de machine (10).
  13. Machine-outil portative selon les revendications 6 et 12, caractérisée en ce que la bague intermédiaire (27) est amenée à une position coulissante par commande de l'électroaimant (25), position à laquelle ses dents intérieures (271) sont engrenées avec la roue dentée (32) sur le manchon d'entraînement (14) et avec la section dentée (30) sur le boîtier de machine (10).
  14. Machine-outil portative selon la revendication 13, caractérisée en ce que l'électroaimant (25) est commandé avec un courant d'excitation réduit dont l'intensité est mesurée de manière à ce que la course de coulissement de la bague intermédiaire (27) suffise à amener ses dents intérieures (271) à s'engrener extérieurement avec la couronne dentée (31) sur la roue entraînée (16).
  15. Machine-outil portative selon la revendication 13, caractérisée en ce que, dans le mode de fonctionnement dans lequel le réceptacle d'outil (12) est entraîné en rotation, l'électroaimant (25) est commuté sans courant et la bague intermédiaire (27) est amenée à sa position de coulissement par le ressort de rappel (28) s'engageant sur la fourche de commutation (26), position à laquelle ses dents intérieures (271) sont engrenées avec la couronne dentée (31) sur la roue entraînée (16).
EP05707914.7A 2004-03-13 2005-02-02 Machine-outil portative Expired - Fee Related EP1727650B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004012433A DE102004012433A1 (de) 2004-03-13 2004-03-13 Handwerkzeugmaschine
PCT/EP2005/050440 WO2005087446A1 (fr) 2004-03-13 2005-02-02 Machine-outil portative

Publications (2)

Publication Number Publication Date
EP1727650A1 EP1727650A1 (fr) 2006-12-06
EP1727650B1 true EP1727650B1 (fr) 2017-10-11

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EP05707914.7A Expired - Fee Related EP1727650B1 (fr) 2004-03-13 2005-02-02 Machine-outil portative

Country Status (6)

Country Link
US (1) US7497272B2 (fr)
EP (1) EP1727650B1 (fr)
JP (1) JP4340316B2 (fr)
CN (1) CN100522502C (fr)
DE (1) DE102004012433A1 (fr)
WO (1) WO2005087446A1 (fr)

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JP5009005B2 (ja) * 2007-02-15 2012-08-22 株式会社マキタ ハンマドリル
EP2722131B1 (fr) 2007-06-15 2016-07-20 Black & Decker Inc. Outil d'impact hybride
CN102937166B (zh) * 2007-08-29 2015-09-09 苏州宝时得电动工具有限公司 变速工具
DE102007042045A1 (de) * 2007-09-05 2009-03-19 Friedrich Duss Maschinenfabrik Gmbh & Co.Kg Getriebe für ein kraftgetriebenes Werkzeug, insbesondere ein Elektrohandwerkzeuggerät
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US7497272B2 (en) 2009-03-03
JP2007529327A (ja) 2007-10-25
JP4340316B2 (ja) 2009-10-07
CN100522502C (zh) 2009-08-05
CN1929959A (zh) 2007-03-14
WO2005087446A1 (fr) 2005-09-22
US20070074883A1 (en) 2007-04-05
EP1727650A1 (fr) 2006-12-06
DE102004012433A1 (de) 2005-09-29

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