EP2212062A1 - Hand-held power tool - Google Patents

Hand-held power tool

Info

Publication number
EP2212062A1
EP2212062A1 EP08841198A EP08841198A EP2212062A1 EP 2212062 A1 EP2212062 A1 EP 2212062A1 EP 08841198 A EP08841198 A EP 08841198A EP 08841198 A EP08841198 A EP 08841198A EP 2212062 A1 EP2212062 A1 EP 2212062A1
Authority
EP
European Patent Office
Prior art keywords
torque
hand tool
tool according
drive motor
hand
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
EP08841198A
Other languages
German (de)
French (fr)
Other versions
EP2212062B1 (en
Inventor
Heiko Roehm
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 EP2212062A1 publication Critical patent/EP2212062A1/en
Application granted granted Critical
Publication of EP2212062B1 publication Critical patent/EP2212062B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • B25D16/003—Clutches specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D2216/0007—Details of percussion or rotation modes
    • B25D2216/0023—Tools having a percussion-and-rotation mode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D2216/0007—Details of percussion or rotation modes
    • B25D2216/0038—Tools having a rotation-only mode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/165—Overload clutches, torque limiters
    • 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
    • B25D2250/195—Regulation means
    • B25D2250/205—Regulation means for torque
    • 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
    • B25D2250/245—Spatial arrangement of components of the tool relative to each other

Definitions

  • the invention relates to a hand tool, which is used as a hammer drill and a drill and is equipped with a drive motor and a striking mechanism for rotatable and hammering or beating drive a tool.
  • a designed as a hammer drill hand tool which can be used in various modes of operation.
  • an operation as a rotary hammer is possible, in which the drive movement of the drive motor can be transmitted to the tool-accommodating chuck via a rotary drive which can be switched on and off and via a percussion mechanism. If only the impact mechanism is active, but not the rotary actuator, the hammer is in chisel mode. If, on the other hand, both the rotary drive and the striking mechanism are activated, the hammer drill is operated in impact drilling mode. In another switching configuration, the hammer mechanism is deactivated and only the rotary drive is active, so that the hammer drill is operated in rotary drilling mode.
  • hand tool machines which are equipped with a torque limiting unit, which assumes the function of an overload clutch to interrupt the power flow between the engine output and the tool driving, if the transmitted torque exceeds an overload torque.
  • a torque limiting unit which assumes the function of an overload clutch to interrupt the power flow between the engine output and the tool driving, if the transmitted torque exceeds an overload torque.
  • Such a hand tool machine which is designed as a cordless screwdriver, is described for example in DE 10 2004 058 809 A1. Screws with uniform torque can be screwed in via the torque limiting unit.
  • the invention has for its object to provide a hand tool, which is designed as a hammer drill, with an additional operating functionality.
  • the hand tool according to the invention can be used both as a hammer drill and as a drill and has a drive motor and a striking mechanism.
  • the rotary drive and the impact mechanism are each switched on or switched off to realize various functions. For example, a chisel operation is possible if the rotary drive is disabled and only the impact mechanism is active. With additionally activated rotary drive one receives the hammer drill function. With shutdown of the striking mechanism, the hand tool is in pure drilling operation.
  • the torque clutch is ideally to be adjusted between an operating and an inoperative position in which the torque limit is overridden.
  • the reduction gear is to be bridged either mechanically, so that the transmission gear is also to be adjusted between an inoperative position and an operating position, and / or there are different Gear ratios adjustable in the reduction gear.
  • the reduction gear allows in the operating position or at a correspondingly adjusted ratio operation of the power tool as a drill with a reduced compared to the pure drilling operation speed.
  • the torque coupling ensures in the screwing mode that the transmitted torque does not exceed a limit torque.
  • This limit torque is preferably carried out adjustable, for example, at least two torque levels, but possibly also other torque levels or a continuous adjustment of the limit torque is possible.
  • Reduction gear is translated into a suitable for the screwdriver functionality rotary motion at a lower speed, at the same time by activating the torque clutch is to set a maximum allowable torque.
  • Activation of the torque clutch is optional; if necessary, this can also be dispensed with in screwdriving or drilling operation, so that there is no torque limitation.
  • the drive motor the stepping motor, the stepping motor, the stepping motor, the stepping motor, the stepping motor, the stepping motor, the stepping motor, the stepping motor, the stepping motor, the stepping motor, the stepping motor, the stepping motor, the stepping motor, the stepping motor, the stepping motor, the stepping motor, the stepping motor, the stepping motor, the stepping motor, the stepping motor, the stepping motor, the stepping motor, the
  • Reduction gear the percussion and the torque coupling arranged one behind the other and in a line aligned with each other, whereby an advantageous power transmission between the drive motor through the intermediate units is guaranteed to the tool holder with the tool therein.
  • the torque coupling is arranged according to a first preferred embodiment between the striking mechanism and the tool holder. According to a second preferred embodiment, a positioning of the torque coupling in front of the impact mechanism and the tool holder comes into consideration.
  • Reduction gear is expediently in both cases directly on the output side of the drive motor and before the percussion or torque coupling.
  • a planetary gear is used as a reduction gear, which advantageously has at least two switchable reduction ratios.
  • the planetary gear has either all planetary stages in operation to allow a strong underdriven transmission of the rotary drive movement of the drive motor to the tool for the screwing, or a gear stage of the planetary gear translates the drive movement of the drive motor in a rotational speed, which allows a drilling operation.
  • Hand tool with a battery pack to power the electrically running drive motor equipped.
  • the battery pack is arranged in particular releasably on the housing of the power tool and can be recharged when needed in a charging station.
  • the percussion, over which the hammer drill and the chisel operation is to be set, is either pneumatic or mechanical and operated. In any case, the activation of the impact mechanism is optional.
  • a hand tool machine designed as a hammer drill, with a drive motor and a striking mechanism for rotatable or hammering drive a tool and additionally with a reduction gear and a torque clutch for limiting the transferable
  • Torque is equipped so that the Hand tool can be used as a hammer drill, as a drill, as a chisel and as a screwdriver,
  • Fig. 2 the hand tool in a modified version.
  • the portable power tool shown in FIG. 1 is a rotary hammer which has in a housing 2 an electric drive motor 3 which is supplied with power via a battery pack 4 at the bottom of the housing.
  • the battery pack 4 is detachably formed by the housing.
  • the electric drive motor is to be operated via a manual switch 5.
  • a second handle may be arranged on the housing 2.
  • Planetary gear 6 a striking mechanism 7 and a torque clutch 8 are arranged.
  • the planetary gear 6 is located directly on the output side of the electric drive motor 3. This is followed by the striking mechanism 7, with which the hammering or beating function is realized. Following the
  • the tool holder 9 is connected to receive a tool 10, wherein the tool holder 9 is designed for example as a chuck or as a slotted clamping sleeve.
  • the electric drive motor 3 the planetary gear 6 as a reduction gear, the striking mechanism 7 and the
  • Torque coupling are arranged one behind the other lying in the housing 2 of the power tool 1 and have a common longitudinal axis, which is also the axis of rotation of the drive motor and the tool holder 9 with the tool 10.
  • the planetary gear 6 is provided with different gear ratios, which can be adjusted by the user.
  • the impact mechanism 7 is switched on and switched off, as well as the torque coupling 8, in the preferably different levels
  • Torque limits are adjustable, which are transferable between the electric drive motor and tool holder.
  • FIG. 2 The illustrated in Fig. 2 embodiment of a power tool 1 is largely identical to that of FIG. 1, so that reference can be made to the description of FIG. 1.
  • the torque clutch 8 directly adjoins the planetary gear 6, which is located on the output side of the electric drive motor 3.
  • Torque clutch 8 is followed by the impact mechanism 7, to which the tool holder 9 is coupled.
  • the torque clutch 8 envelops the striking mechanism 7.

Abstract

The invention relates to a hand-held power tool (1) having a drive motor (3) and a striking mechanism (7) for the rotating or impact drive of a tool (10), which is accommodated in a tool receptacle (9). A transmission gearing (6) and a torque transmission (8) are disposed in the transmission path between the drive motor (3) and the tool receptacle (9) for limiting the transferable torque, wherein a threshold torque can be set in the torque transmission (8).

Description

BeSchreibungDescription
Titel HandwerkzeugmaschineTitle Hand tool
Die Erfindung bezieht sich auf eine Handwerkzeugmaschine, die als Bohrhammer und als Bohrer einsetzbar ist und mit einem Antriebsmotor und einem Schlagwerk zum drehbaren und hämmernden bzw. schlagenden Antrieb eines Werkzeugs ausgestattet ist.The invention relates to a hand tool, which is used as a hammer drill and a drill and is equipped with a drive motor and a striking mechanism for rotatable and hammering or beating drive a tool.
Stand der TechnikState of the art
In der DE 10 2005 047 600 Al wird eine als Bohrhammer ausgebildete Handwerkzeugmaschine beschrieben, die in verschiedenen Betriebsmodi eingesetzt werden kann. Zum einen ist ein Betrieb als Bohrhammer möglich, bei dem die Antriebsbewegung des Antriebsmotors über einen zu- und abschaltbaren Drehantrieb sowie über ein Schlagwerk auf das das Werkzeug aufnehmende Spannfutter übertragbar ist. Ist nur das Schlagwerk aktiv, nicht aber der Drehantrieb, befindet sich der Bohrhammer im Meißelmodus. Werden dagegen sowohl der Drehantrieb als auch das Schlagwerk aktiviert, wird der Bohrhammer im Schlagbohrmodus betrieben. In einer weiteren Schaltkonfiguration ist das Schlagwerk außer Betrieb gesetzt und nur der Drehantrieb aktiv, so dass der Bohrhammer im Drehbohrmodus betrieben wird.In DE 10 2005 047 600 Al a designed as a hammer drill hand tool is described, which can be used in various modes of operation. On the one hand, an operation as a rotary hammer is possible, in which the drive movement of the drive motor can be transmitted to the tool-accommodating chuck via a rotary drive which can be switched on and off and via a percussion mechanism. If only the impact mechanism is active, but not the rotary actuator, the hammer is in chisel mode. If, on the other hand, both the rotary drive and the striking mechanism are activated, the hammer drill is operated in impact drilling mode. In another switching configuration, the hammer mechanism is deactivated and only the rotary drive is active, so that the hammer drill is operated in rotary drilling mode.
Darüber hinaus sind Handwerkzeugmaschinen bekannt, die mit einer Drehmomentbegrenzungseinheit ausgestattet sind, welche die Funktion einer Überlastkupplung einnimmt, um den Kraftfluss zwischen dem Motorabtrieb und der Werkzeugmitnahme zu unterbrechen, falls das übertragene Drehmoment ein Überlastdrehmoment übersteigt. Eine derartige Handwerkzeugmaschine, die als Akku-Schrauber ausgebildet ist, ist beispielsweise in der DE 10 2004 058 809 Al beschrieben. Über die Drehmomentbegrenzungseinheit können Schrauben mit einheitlichem Drehmoment eingeschraubt werden.In addition, hand tool machines are known, which are equipped with a torque limiting unit, which assumes the function of an overload clutch to interrupt the power flow between the engine output and the tool driving, if the transmitted torque exceeds an overload torque. Such a hand tool machine, which is designed as a cordless screwdriver, is described for example in DE 10 2004 058 809 A1. Screws with uniform torque can be screwed in via the torque limiting unit.
Offenbarung der ErfindungDisclosure of the invention
Von diesem Stand der Technik ausgehend liegt der Erfindung die Aufgabe zugrunde, eine Handwerkzeugmaschine, die als Bohrhammer ausgebildet ist, mit einer zusätzlichen Betriebsfunktionalität zu versehen.Based on this prior art, the invention has for its object to provide a hand tool, which is designed as a hammer drill, with an additional operating functionality.
Diese Aufgabe wird erfindungsgemäß mit den Merkmalen des Anspruches 1 gelöst. Die Unteransprüche geben zweckmäßige Weiterbildungen an.This object is achieved with the features of claim 1. The dependent claims indicate expedient developments.
Die erfindungsgemäße Handwerkzeugmaschine ist sowohl als Bohrhammer als auch als Bohrer einsetzbar und weist einen Antriebsmotor sowie ein Schlagwerk auf. Vorteilhafterweise sind der Drehantrieb und auch das Schlagwerk jeweils zu- bzw. abschaltbar ausgebildet, um verschiedene Funktionen realisieren zu können. So ist beispielsweise ein Meißelbetrieb möglich, wenn der Drehantrieb außer Funktion gesetzt und nur das Schlagwerk aktiv ist. Bei zusätzlich aktiviertem Drehantrieb erhält man die Bohrhammerfunktion. Mit Abschaltung des Schlagwerks befindet sich die Handwerkzeugmaschine im reinen Bohrbetrieb.The hand tool according to the invention can be used both as a hammer drill and as a drill and has a drive motor and a striking mechanism. Advantageously, the rotary drive and the impact mechanism are each switched on or switched off to realize various functions. For example, a chisel operation is possible if the rotary drive is disabled and only the impact mechanism is active. With additionally activated rotary drive one receives the hammer drill function. With shutdown of the striking mechanism, the hand tool is in pure drilling operation.
Bei der erfindungsgemäßen Handwerkzeugmaschine ist zudem im Übertragungsweg zwischen Antriebsmotor und Werkzeugaufnahme, in der das Werkzeug aufgenommen ist, ein Untersetzungsgetriebe und eine Drehmomentkupplung zur Begrenzung des übertragbarenIn the case of the portable power tool according to the invention, moreover, in the transmission path between the drive motor and the tool holder, in which the tool is received, a reduction gear and a torque clutch for limiting the transmittable
Drehmoments angeordnet. Die Drehmomentkupplung ist idealerweise zwischen einer Betriebs- und einer Außerbetriebsposition zu verstellen, in der die Drehmomentbegrenzung außer Kraft gesetzt ist. Das Untersetzungsgetriebe ist entweder mechanisch zu überbrücken, so dass das Übersetzungsgetriebe ebenfalls zwischen einer Außerbetriebsposition und einer Betriebsposition zu verstellen ist, und/oder es sind verschiedene Übersetzungsverhältnisse im Untersetzungsgetriebe einstellbar. Das Untersetzungsgetriebe erlaubt in der Betriebsposition bzw. bei entsprechend eingestelltem Übersetzungsverhältnis einen Betrieb der Handwerkzeugmaschine als Bohrschrauber mit einer gegenüber dem reinen Bohrbetrieb reduzierten Drehzahl. Die Drehmomentkupplung stellt im Schraubmodus sicher, dass das übertragene Drehmoment ein Grenzdrehmoment nicht überschreitet. Dieses Grenzdrehmoment ist vorzugsweise einstellbar ausgeführt, wobei beispielsweise zumindest zwei Drehmomentstufen, ggf. aber auch weitere Drehmomentstufen bzw. eine stufenlose Einstellung des Grenzdrehmoments möglich ist.Torque arranged. The torque clutch is ideally to be adjusted between an operating and an inoperative position in which the torque limit is overridden. The reduction gear is to be bridged either mechanically, so that the transmission gear is also to be adjusted between an inoperative position and an operating position, and / or there are different Gear ratios adjustable in the reduction gear. The reduction gear allows in the operating position or at a correspondingly adjusted ratio operation of the power tool as a drill with a reduced compared to the pure drilling operation speed. The torque coupling ensures in the screwing mode that the transmitted torque does not exceed a limit torque. This limit torque is preferably carried out adjustable, for example, at least two torque levels, but possibly also other torque levels or a continuous adjustment of the limit torque is possible.
Auf diese Weise ist zusätzlich zum Bohrhammerbetrieb, zum Bohrbetrieb und zum Meißelbetrieb auch ein Schraubbetrieb möglich, bei dem die mit hoher Drehzahl erfolgende Antriebsbewegung des Antriebsmotors mittels desIn this way, in addition to the hammer drill, the drilling operation and the chisel operation and a screwing operation is possible in which the high-speed drive movement of the drive motor by means of
Untersetzungsgetriebes in eine für die Schrauberfunktionalität geeignete Drehbewegung mit geringerer Drehzahl übersetzt wird, wobei zugleich durch Aktivierung der Drehmomentkupplung ein maximal zulässiges Drehmoment einzustellen ist. Die Aktivierung der Drehmomentkupplung ist optional; ggf. kann auch im Schraubbetrieb bzw. Bohrbetrieb darauf verzichtet werden, so dass keine Drehmomentbegrenzung besteht.Reduction gear is translated into a suitable for the screwdriver functionality rotary motion at a lower speed, at the same time by activating the torque clutch is to set a maximum allowable torque. Activation of the torque clutch is optional; if necessary, this can also be dispensed with in screwdriving or drilling operation, so that there is no torque limitation.
Gemäß einer bevorzugten Ausführung sind der Antriebsmotor, dasAccording to a preferred embodiment, the drive motor, the
Untersetzungsgetriebe, das Schlagwerk und die Drehmomentkupplung hintereinanderliegend und in einer Linie fluchtend zueinander angeordnet, wodurch eine vorteilhafte Kraftübertragung zwischen dem Antriebsmotor über die zwischenliegenden Einheiten bis zur Werkzeugaufnahme mit dem darin befindlichen Werkzeug gewährleistet ist.Reduction gear, the percussion and the torque coupling arranged one behind the other and in a line aligned with each other, whereby an advantageous power transmission between the drive motor through the intermediate units is guaranteed to the tool holder with the tool therein.
Die Drehmomentkupplung ist gemäß einer ersten bevorzugten Ausführung zwischen dem Schlagwerk und der Werkzeugaufnahme angeordnet. Gemäß einer zweiten bevorzugten Ausführung kommt auch eine Positionierung der Drehmomentkupplung vor dem Schlagwerk und der Werkzeugaufnahme in Betracht. Das - A -The torque coupling is arranged according to a first preferred embodiment between the striking mechanism and the tool holder. According to a second preferred embodiment, a positioning of the torque coupling in front of the impact mechanism and the tool holder comes into consideration. The - A -
Untersetzungsgetriebe befindet sich zweckmäßigerweise in beiden Fällen unmittelbar auf der Abtriebsseite des Antriebsmotors und vor dem Schlagwerk bzw. der Drehmomentkupplung.Reduction gear is expediently in both cases directly on the output side of the drive motor and before the percussion or torque coupling.
In bevorzugter Ausführung wird als Untersetzungsgetriebe ein Planetengetriebe eingesetzt, welches vorteilhafterweise mindestens zwei schaltbare Untersetzungsverhältnisse aufweist. Das Planetengetriebe hat entweder alle Planetenstufen in Betrieb, um eine stark untersetzte Übertragung der Drehantriebsbewegung des Antriebsmotors auf das Werkzeug für den Schraubbetrieb zu erlauben, oder eine Gangstufe des Planetengetriebes übersetzt die Antriebsbewegung des Antriebsmotors in eine Drehzahl, die einen Bohrbetrieb erlaubt.In a preferred embodiment, a planetary gear is used as a reduction gear, which advantageously has at least two switchable reduction ratios. The planetary gear has either all planetary stages in operation to allow a strong underdriven transmission of the rotary drive movement of the drive motor to the tool for the screwing, or a gear stage of the planetary gear translates the drive movement of the drive motor in a rotational speed, which allows a drilling operation.
In einer weiteren vorteilhaften Ausführung ist dieIn a further advantageous embodiment, the
Handwerkzeugmaschine mit einem Akku-Pack zur Stromversorgung des elektrisch ausgeführten Antriebsmotors ausgestattet. Das Akku- Pack ist insbesondere lösbar am Gehäuse der Handwerkzeugmaschine angeordnet und kann bei Bedarf in einer Aufladestation wieder aufgeladen werden.Hand tool with a battery pack to power the electrically running drive motor equipped. The battery pack is arranged in particular releasably on the housing of the power tool and can be recharged when needed in a charging station.
Das Schlagwerk, über das der Bohrhammer- und der Meißelbetrieb einzustellen ist, ist entweder pneumatisch oder mechanisch ausgeführt und zu betätigen. In jedem Fall erfolgt die Zuschaltung des Schlagwerks optional.The percussion, over which the hammer drill and the chisel operation is to be set, is either pneumatic or mechanical and operated. In any case, the activation of the impact mechanism is optional.
Weitere Vorteile und zweckmäßige Ausführungen sind den weiterenFurther advantages and expedient designs are the further
Ansprüchen, der Figurenbeschreibung und den Zeichnungen zu entnehmen. Es zeigen:Claims, the description of the figures and the drawings. Show it:
Fig. 1 eine Handwerkzeugmaschine, ausgeführt als Bohrhammer, die mit einem Antriebsmotor und einem Schlagwerk zum drehbaren bzw. hämmernden Antrieb eines Werkzeugs und zusätzlich mit einem Untersetzungsgetriebe und einer Drehmomentkupplung zur Begrenzung des übertragbaren1 is a hand tool machine, designed as a hammer drill, with a drive motor and a striking mechanism for rotatable or hammering drive a tool and additionally with a reduction gear and a torque clutch for limiting the transferable
Drehmoments ausgestattet ist, so dass die Handwerkzeugmaschine als Bohrhammer, als Bohrer, als Meißel und als Schrauber eingesetzt werden kann,Torque is equipped so that the Hand tool can be used as a hammer drill, as a drill, as a chisel and as a screwdriver,
Fig. 2 die Handwerkzeugmaschine in einer modifizierten Ausführung.Fig. 2, the hand tool in a modified version.
In den Figuren sind gleiche Bauteile mit gleichen Bezugszeichen versehen .In the figures, the same components are provided with the same reference numerals.
Bei der in Fig. 1 dargestellten Handwerkzeugmaschine handelt es sich um einen Bohrhammer, der in einem Gehäuse 2 einen elektrischen Antriebsmotor 3 aufweist, welcher über ein Akku- Pack 4 am Boden des Gehäuses mit Strom versorgt wird. Das Akku- Pack 4 ist lösbar vom Gehäuse ausgebildet. Der elektrische Antriebsmotor ist über einen Handschalter 5 zu betätigen.The portable power tool shown in FIG. 1 is a rotary hammer which has in a housing 2 an electric drive motor 3 which is supplied with power via a battery pack 4 at the bottom of the housing. The battery pack 4 is detachably formed by the housing. The electric drive motor is to be operated via a manual switch 5.
Zur besseren Handhabung der Handwerkzeugmaschine 1 kann ein zweiter Handgriff am Gehäuse 2 angeordnet sein.For better handling of the power tool 1, a second handle may be arranged on the housing 2.
Im Gehäuse 2 der Handwerkzeugmaschine 1 sind außerdem einIn the housing 2 of the power tool 1 are also a
Planetengetriebe 6, ein Schlagwerk 7 und eine Drehmomentkupplung 8 angeordnet. Das Planetengetriebe 6 befindet sich unmittelbar an der Abtriebsseite des elektrischen Antriebsmotors 3. Daran schließt sich das Schlagwerk 7 an, mit dem die hämmernde bzw. schlagende Funktion realisiert wird. Im Anschluss an dasPlanetary gear 6, a striking mechanism 7 and a torque clutch 8 are arranged. The planetary gear 6 is located directly on the output side of the electric drive motor 3. This is followed by the striking mechanism 7, with which the hammering or beating function is realized. Following the
Schlagwerk 7 befindet sich die Drehmomentkupplung 8. An die Drehmomentkupplung 8 wird die Werkzeugaufnahme 9 zur Aufnahme eines Werkzeugs 10 angeschlossen, wobei die Werkzeugaufnahme 9 beispielsweise als Bohrfutter oder als geschlitzte Spannhülse ausgeführt ist.Schlagwerk 7 is the torque coupling 8. At the torque coupling 8, the tool holder 9 is connected to receive a tool 10, wherein the tool holder 9 is designed for example as a chuck or as a slotted clamping sleeve.
Der elektrische Antriebsmotor 3, das Planetengetriebe 6 als Untersetzungsgetriebe, das Schlagwerk 7 und dieThe electric drive motor 3, the planetary gear 6 as a reduction gear, the striking mechanism 7 and the
Drehmomentkupplung sind hintereinander liegend im Gehäuse 2 der Handwerkzeugmaschine 1 angeordnet und besitzen eine gemeinsame Längsachse, welche zugleich die Drehachse des Antriebsmotors sowie der Werkzeugaufnahme 9 mit dem Werkzeug 10 ist. Vorteilhafterweise ist das Planetengetriebe 6 mit verschiedenen Gangstufen versehen, die vom Benutzer eingestellt werden können. Das Schlagwerk 7 ist zu- und abschaltbar ausgebildet, ebenso die Drehmomentkupplung 8, in der vorzugsweise verschieden hoheTorque coupling are arranged one behind the other lying in the housing 2 of the power tool 1 and have a common longitudinal axis, which is also the axis of rotation of the drive motor and the tool holder 9 with the tool 10. Advantageously, the planetary gear 6 is provided with different gear ratios, which can be adjusted by the user. The impact mechanism 7 is switched on and switched off, as well as the torque coupling 8, in the preferably different levels
Drehmomentgrenzwerte einstellbar sind, die zwischen elektrischem Antriebsmotor und Werkzeugaufnahme übertragbar sind.Torque limits are adjustable, which are transferable between the electric drive motor and tool holder.
Das in Fig. 2 dargestellte Ausführungsbeispiel einer Handwerkzeugmaschine 1 ist weitgehend mit demjenigen nach Fig. 1 identisch, so dass insofern auf die Beschreibung zu Fig. 1 verwiesen werden kann. Unterschiedlich ist allerdings die Anordnung von Schlagwerk 7 und Drehmomentkupplung 8. Die Drehmomentkupplung 8 schließt sich unmittelbar an das Planetengetriebe 6 an, welches sich auf der Abtriebsseite des elektrischen Antriebsmotors 3 befindet. An dieThe illustrated in Fig. 2 embodiment of a power tool 1 is largely identical to that of FIG. 1, so that reference can be made to the description of FIG. 1. However, the arrangement of impact mechanism 7 and torque clutch 8 differs. The torque clutch 8 directly adjoins the planetary gear 6, which is located on the output side of the electric drive motor 3. To the
Drehmomentkupplung 8 schließt sich das Schlagwerk 7 an, an das die Werkzeugaufnahme 9 angekuppelt wird.Torque clutch 8 is followed by the impact mechanism 7, to which the tool holder 9 is coupled.
Bei einer nicht dargestellten Alternative umhüllt die Drehmomentkupplung 8 das Schlagwerk 7. In an alternative, not shown, the torque clutch 8 envelops the striking mechanism 7.

Claims

Ansprüche claims
1. Handwerkzeugmaschine, einsetzbar als Bohrhammer und als Bohrer, mit einem Antriebsmotor (3) und einem Schlagwerk (7) zum drehbaren bzw. hämmernden Antrieb eines Werkzeugs (10) der Handwerkzeugmaschine (1) , das in einer Werkzeugaufnahme (9) aufgenommen ist, dadurch gekennzeichnet, dass im Übertragungsweg zwischen Antriebsmotor (3) und Werkzeugaufnahme (9) ein1. Hand tool, can be used as a hammer drill and as a drill, with a drive motor (3) and a striking mechanism (7) for rotatable or hammering drive a tool (10) of the power tool (1) which is received in a tool holder (9), characterized in that in the transmission path between the drive motor (3) and tool holder (9) a
Untersetzungsgetriebe (6) und eine Drehmomentkupplung (8) zur Begrenzung des übertragbaren Drehmoments angeordnet sind, wobei in der Drehmomentkupplung (8) ein Grenzdrehmoment einstellbar ist.Reduction gear (6) and a torque coupling (8) are arranged to limit the transmittable torque, wherein in the torque coupling (8) a limit torque is adjustable.
2. Handwerkzeugmaschine nach Anspruch 1, dadurch gekennzeichnet, dass der Antriebsmotor (3), das Untersetzungsgetriebe (6) , das Schlagwerk (7) und die2. Hand tool according to Claim 1, characterized in that the drive motor (3), the reduction gear (6), the striking mechanism (7) and the
Drehmomentkupplung (8) hintereinander liegend und in einer Linie fluchtend angeordnet sind.Torque clutch (8) are arranged one behind the other and aligned in a line.
3. Handwerkzeugmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Drehmomentkupplung (8) zwischen dem Schlagwerk (7) und der Werkzeugaufnahme (9) angeordnet ist.3. Hand tool according to Claim 1 or 2, characterized in that the torque coupling (8) between the hammer mechanism (7) and the tool holder (9) is arranged.
4. Handwerkzeugmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Schlagwerk (7) zwischen der Drehmomentkupplung (8) und der Werkzeugaufnahme (9) angeordnet ist.4. Hand tool according to Claim 1 or 2, characterized in that the striking mechanism (7) between the torque coupling (8) and the tool holder (9) is arranged.
5. Handwerkzeugmaschine nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Untersetzungsgetriebe (6) unmittelbar auf der Abtriebsseite des Antriebsmotors (3) angeordnet ist. 5. Hand tool according to one of claims 1 to 4, characterized in that the reduction gear (6) is arranged directly on the output side of the drive motor (3).
6. Handwerkzeugmaschine nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Untersetzungsgetriebe ein Planetengetriebe (6) ist.6. Hand tool according to one of claims 1 to 5, characterized in that the reduction gear is a planetary gear (6).
7. Handwerkzeugmaschine nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Handwerkzeugmaschine (1) mit einem Akku-Pack (4) zur Stromversorgung eines elektrischen Antriebsmotors (3) ausgestattet ist.7. Hand tool according to one of claims 1 to 6, characterized in that the hand tool (1) is equipped with a battery pack (4) for powering an electric drive motor (3).
8. Handwerkzeugmaschine nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass das Schlagwerk (7) mechanisch zu betätigen ist.8. Hand tool according to one of claims 1 to 7, characterized in that the striking mechanism (7) is to be actuated mechanically.
9. Handwerkzeugmaschine nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass das Schlagwerk (7) pneumatisch zu betätigen ist.9. Hand tool according to one of claims 1 to 7, characterized in that the striking mechanism (7) is to be actuated pneumatically.
10. Handwerkzeugmaschine nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass in der Drehmomentkupplung (8) in der Betriebsposition mindestens zwei Drehmomentstufen einstellbar sind.10. Hand tool according to one of claims 1 to 9, characterized in that in the torque coupling (8) in the operating position at least two torque levels are adjustable.
11. Handwerkzeugmaschine nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die Werkzeugaufnahme (9) als Bohrfutter ausgeführt ist.11. Hand tool according to one of claims 1 to 10, characterized in that the tool holder (9) is designed as a chuck.
12. Handwerkzeugmaschine nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die Werkzeugaufnahme (9) als geschlitzte Spannhülse ausgeführt ist.12. Hand tool according to one of claims 1 to 10, characterized in that the tool holder (9) is designed as a slotted clamping sleeve.
13. Handwerkzeugmaschine nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass die Drehmomentkupplung (8) zwischen einer Betriebs- und einer Außerbetriebsposition verstellbar ist, in der die Drehmomentbegrenzung außer Kraft gesetzt ist. 13. Hand tool according to one of claims 1 to 12, characterized in that the torque coupling (8) is adjustable between an operating and an inoperative position in which the torque limiter is disabled.
EP08841198.8A 2007-10-22 2008-09-29 Hand-held power tool Active EP2212062B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007050307A DE102007050307A1 (en) 2007-10-22 2007-10-22 Hand tool
PCT/EP2008/063001 WO2009053220A1 (en) 2007-10-22 2008-09-29 Hand-held power tool

Publications (2)

Publication Number Publication Date
EP2212062A1 true EP2212062A1 (en) 2010-08-04
EP2212062B1 EP2212062B1 (en) 2017-07-19

Family

ID=40094184

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Application Number Title Priority Date Filing Date
EP08841198.8A Active EP2212062B1 (en) 2007-10-22 2008-09-29 Hand-held power tool

Country Status (7)

Country Link
US (1) US20100326685A1 (en)
EP (1) EP2212062B1 (en)
JP (1) JP2011500348A (en)
CN (1) CN101835567A (en)
DE (1) DE102007050307A1 (en)
RU (1) RU2010120471A (en)
WO (1) WO2009053220A1 (en)

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Also Published As

Publication number Publication date
RU2010120471A (en) 2011-11-27
EP2212062B1 (en) 2017-07-19
US20100326685A1 (en) 2010-12-30
DE102007050307A1 (en) 2009-04-23
JP2011500348A (en) 2011-01-06
WO2009053220A1 (en) 2009-04-30
CN101835567A (en) 2010-09-15

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