EP1334805A1 - Switch for changing operating mode in a percussion hammer - Google Patents

Switch for changing operating mode in a percussion hammer Download PDF

Info

Publication number
EP1334805A1
EP1334805A1 EP03405035A EP03405035A EP1334805A1 EP 1334805 A1 EP1334805 A1 EP 1334805A1 EP 03405035 A EP03405035 A EP 03405035A EP 03405035 A EP03405035 A EP 03405035A EP 1334805 A1 EP1334805 A1 EP 1334805A1
Authority
EP
European Patent Office
Prior art keywords
operating mode
switching unit
axially displaceable
mode switching
unit 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.)
Granted
Application number
EP03405035A
Other languages
German (de)
French (fr)
Other versions
EP1334805B1 (en
Inventor
Ralf Greitmann
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Publication of EP1334805A1 publication Critical patent/EP1334805A1/en
Application granted granted Critical
Publication of EP1334805B1 publication Critical patent/EP1334805B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • 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
    • B25D2216/0015—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
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/195—Regulation means
    • B25D2250/205—Regulation means for torque

Definitions

  • the invention designates an operating mode switching unit at least partially rotating and striking hand tool like a combi hammer.
  • a hammer drill has a non-rotatable on the guide tube Externally manually operable, axially displaceable sliding sleeve with switching claws on which the drifting guide tube in a first operating mode in relation to the housing, in a second operating mode without rotation and in a third operating mode driving bevel gear ring.
  • a chisel hammer has a two-part guide tube, which via axially engaging locking balls in both radially and a spring-loaded can be fixed from the outside, manually displaceable, rotatable sliding sleeve.
  • slip clutches are used in the power transmission line.
  • a rotary hammer has a spring-loaded slip clutch which, between the hollow, containing an axially striking piston, abortive guide tube, which is non-rotatably connected to the tool holder, and a driving bevel pinion ring which is rotatable on the guide tube is arranged. Via an axially displaceable sliding sleeve that can be operated manually from the outside, according to one Disengage in case of overload, the slip clutch can be re-engaged.
  • a hammer drill has one of two axially resilient against one another pre-tensioned interlocking clutch rings on existing slip clutch, which between the hollow, containing an axially striking piston, abortive guide tube and a driving, rotatable on the guide tube Sprocket is arranged, which manually via one from the outside in three operating modes switchable, additional intermediate shaft is driven.
  • the object of the invention is the simple implementation of one in three operating modes manually switchable operating mode switch unit of a hand machine tool integrated slip clutch.
  • An operating mode switching unit essentially has one for at least three operating modes at least partially rotating and striking hand tool one Slip clutch, which is between a hollow, axially striking percussion piston containing, abortive guide tube and a rotatable on the guide tube, driving sprocket is arranged, and via a manually switchable from the outside, axially displaceable switching element can be switched into different operating modes, at least in one operating mode, the guide tube is driven in rotation, the axially displaceable Switching element in a form-locking manner in a driving, non-rotatably mounted to the guide tube Coupling ring of the slip clutch engages.
  • the driving coupling ring Due to the positive locking in a driving clutch ring of the slip clutch engaging, axially displaceable switching element, the driving coupling ring combines the Operating mode switching unit technologically simple with a torque-dependent Slip clutch and thus leads to component savings.
  • the slip clutch advantageously consists of two against each other with an axial spring preloaded, axially frictionally engaging coupling rings, whereby this can be easily constructed around the guide tube.
  • the abortive coupling ring with the axial spring to the guide tube is advantageous preloaded and rotatably mounted axially limited to the guide tube, whereby the non-rotating, driving coupling ring is axially fixed.
  • the axially displaceable is advantageous Switching element with the driving coupling ring via radial projections and assigned radial grooves connected in a rotationally positive manner, as a result of which the engagement is axial is designed to be motionless.
  • the axially displaceable sliding sleeve is advantageous at a first end with the driving sprocket over, further advantageous radial, cantilever and associated Grooves can be connected in a form-locking manner, which means that an operating mode with rotary drive such as « Impact drilling »is switchable.
  • the axially displaceable sliding sleeve is advantageous at a second end with a Locking ring fixed to the housing via, further advantageously radial, projections and associated Grooves can be connected in a form-locking manner, which means that an operating mode with a rotation lock such as « Chisels »is switchable.
  • the axially displaceable sliding sleeve is advantageously shorter than the engaging distance between the driving sprocket and the housing-fixed locking ring, whereby a non-rotating operating mode such as «position chisel» can be switched.
  • the axially displaceable sliding sleeve against the non-rotating coupling ring is advantageous a sliding spring axially biased, thereby with respect to the positive engagement synchronized switching between the operating modes is possible.
  • the axially displaceable sliding sleeve is advantageously stepped radially, thereby creating an axial stop is designed for the sliding spring.
  • an operating mode switching unit shown as a detail does not have one shown rotating and striking hand tool with a housing 1st a slip clutch, which between a hollow, an axially striking Percussion piston 2 containing, abortive guide tube 3 and one on the Guide tube 3 rotatable, driving ring gear 4 is arranged, one, via a Handle, not shown, manually switchable, axially displaceable sliding sleeve from the outside 5 rotatably in a non-rotatably mounted, driving to the guide tube 3 Coupling ring 6 engages the slip clutch.
  • the slip clutch consists of the to Guide tube 3 axially fixed, driving clutch ring 6 and one with a Axial spring 7 preloaded to the guide tube 3 and axially movable in a rotationally fixed manner mounted, abortive coupling ring 8, which axially on the claw principle are frictionally interlocking.
  • the axially displaceable, radially cranked circumference Sliding sleeve 5 is with the driving coupling ring 6 via radial projections 9 and assigned radial grooves 10 connected in a rotationally positive manner.
  • the axially displaceable sliding sleeve 5 is on a first end face 11 the driving ring gear 4 via radial projections 9 'and associated grooves 10' rotationally connected.
  • the centrally positioned, axially displaceable sliding sleeve 5 is shorter than that engaging distance between the driving ring gear 4 and the housing-fixed Locking ring 13, whereby there is no intervention in the rotation-free operating mode shown.
  • the radially stepped sliding sleeve 5 is from this axial stop via a sliding spring 14 axially biased against the non-rotating coupling ring 6.

Abstract

An overload clutch is arranged between a hollow driving guide cylinder (3) and a rotation driving crown gear (4) such that the overload clutch can be switched to different operating modes using a displaceable external manual switching member. The switching member is rotatably mounted relative to the guide cylinder to lockingly engage into the coupling ring (6) of the overload clutch.

Description

Die Erfindung bezeichnet eine Betriebsmodi-Schalteinheit einer zumindest teilweise drehenden und schlagenden Handwerkzeugmaschine wie einen Kombi-Hammer.The invention designates an operating mode switching unit at least partially rotating and striking hand tool like a combi hammer.

Nach der US4236588 weist ein Bohrhammer eine auf dem Führungsrohr drehfeste, von Aussen manuell betätigbare, axial versetzbare Schiebehülse mit Schaltklauen auf, welche das abtreibende Führungsrohr in einem ersten Betriebsmodus zum Gehäuse drehfest, in einem zweiten Betriebsmodus drehfrei und in einem dritten Betriebsmodus zum antreibenden Kegelritzelkranz festlegt.According to US4236588, a hammer drill has a non-rotatable on the guide tube Externally manually operable, axially displaceable sliding sleeve with switching claws on which the drifting guide tube in a first operating mode in relation to the housing, in a second operating mode without rotation and in a third operating mode driving bevel gear ring.

Nach der DE4009762 weist ein Meisselhammer ein zweiteiliges Führungsrohr auf, welches über in beide radial eingreifende Verrieglungskugeln und eine federnd vorgespannte, axial von Aussen manuell versetzbare, Schiebehülse dreheinstellbar festlegbar ist.According to DE4009762, a chisel hammer has a two-part guide tube, which via axially engaging locking balls in both radially and a spring-loaded can be fixed from the outside, manually displaceable, rotatable sliding sleeve.

Zur mechanischen Begrenzung unzulässig hoher Drehmomente, insbesondere bei einer Werkzeugblockierung, werden Rutschkupplungen im Kraftübertragungsstrang verwendet.For mechanical limitation of impermissibly high torques, especially at Tool blocking, slip clutches are used in the power transmission line.

Nach der DE3804414 weist ein Bohrhammer eine federnd vorgespannte Rutschkupplung auf, welche zwischen dem hohlen, einen axial schlagenden Schlagkolben beinhaltenden, abtreibenden Führungsrohr, welches drehfest mit der Werkzeugaufnahme verbunden ist, und einem, auf dem Führungsrohr drehbaren, antreibenden Kegelritzelkranz angeordnet ist. Über eine von Aussen manuell betätigbare, axial versetzbare Schiebehülse ist nach einem Auskuppeln bei Überlast die Rutschkupplung erneut einrastbar.According to DE3804414, a rotary hammer has a spring-loaded slip clutch which, between the hollow, containing an axially striking piston, abortive guide tube, which is non-rotatably connected to the tool holder, and a driving bevel pinion ring which is rotatable on the guide tube is arranged. Via an axially displaceable sliding sleeve that can be operated manually from the outside, according to one Disengage in case of overload, the slip clutch can be re-engaged.

Nach der JP9239675 weist ein Bohrhammer eine aus zwei gegeneinander axial federnd vorgespannt ineinandergreifenden Kupplungsringen bestehende Rutschkupplung auf, welche zwischen dem hohlen, einen axial schlagenden Schlagkolben beinhaltenden, abtreibenden Führungsrohr und einem, auf dem Führungsrohr drehbaren, antreibenden Zahnkranz angeordnet ist, welcher über eine von Aussen in drei Betriebsmodi manuell schaltbare, zusätzliche Zwischenwelle angetrieben wird. According to JP9239675, a hammer drill has one of two axially resilient against one another pre-tensioned interlocking clutch rings on existing slip clutch, which between the hollow, containing an axially striking piston, abortive guide tube and a driving, rotatable on the guide tube Sprocket is arranged, which manually via one from the outside in three operating modes switchable, additional intermediate shaft is driven.

Die Aufgabe der Erfindung besteht in der einfachen Realisierung einer in drei Betriebsmodi manuell schaltbaren Betriebsmodi-Schalteinheit einer Handwerkzeugmaschine mit integrierter Rutschkupplung.The object of the invention is the simple implementation of one in three operating modes manually switchable operating mode switch unit of a hand machine tool integrated slip clutch.

Die Aufgabe wird im wesentlichen durch die Merkmale der unabhängigen Ansprüche gelöst. Vorteilhafte Weiterbildungen ergeben sich aus den Unteransprüchen.The task is essentially solved by the features of the independent claims. Advantageous further developments result from the subclaims.

Im wesentlichen weist eine Betriebsmodi-Schalteinheit für zumindest drei Betriebsmodi einer zumindest teilweise drehenden und schlagenden Handwerkzeugmaschine eine Rutschkupplung auf, welche zwischen einem hohlen, einen axial schlagenden Schlagkolben beinhaltenden, abtreibenden Führungsrohr und einem, auf dem Führungsrohr drehbaren, antreibenden Zahnkranz angeordnet ist, und über ein von Aussen manuell schaltbares, axial versetzbares Schaltglied in unterschiedliche Betriebsmodi schaltbar ist, wobei in wenigstens einem Betriebsmodus das Führungsrohr drehangetrieben ist, wobei das axial versetzbare Schaltglied drehformschlüssig in einen drehfrei zum Führungsrohr gelagerten, antreibenden Kupplungsring der Rutschkupplung eingreift.An operating mode switching unit essentially has one for at least three operating modes at least partially rotating and striking hand tool one Slip clutch, which is between a hollow, axially striking percussion piston containing, abortive guide tube and a rotatable on the guide tube, driving sprocket is arranged, and via a manually switchable from the outside, axially displaceable switching element can be switched into different operating modes, at least in one operating mode, the guide tube is driven in rotation, the axially displaceable Switching element in a form-locking manner in a driving, non-rotatably mounted to the guide tube Coupling ring of the slip clutch engages.

Durch das drehformschlüssig in einen antreibenden Kupplungsring der Rutschkupplung eingreifende, axial versetzbare Schaltglied, kombiniert der antreibende Kupplungsring die Betriebsmodi-Schalteinheit technologisch einfach mit einer drehmomentanhängigen Rutschkupplung und führt somit zu einer Bauteileinsparung.Due to the positive locking in a driving clutch ring of the slip clutch engaging, axially displaceable switching element, the driving coupling ring combines the Operating mode switching unit technologically simple with a torque-dependent Slip clutch and thus leads to component savings.

Vorteilhaft besteht die Rutschkupplung aus zwei gegeneinander mit einer Axialfeder vorgespannten, axial reibkraftschlüssig ineinandergreifbaren Kupplungsringen, wodurch diese konstruktiv einfach um das Führungsrohr herum ausbildbar ist.The slip clutch advantageously consists of two against each other with an axial spring preloaded, axially frictionally engaging coupling rings, whereby this can be easily constructed around the guide tube.

Vorteilhaft ist der abtreibende Kupplungsring mit der Axialfeder zum Führungsrohr vorgespannt sowie drehfest zum Führungsrohr axial begrenzt beweglich gelagert, wodurch der drehfreie, antreibende Kupplungsring axial fest positioniert ist.The abortive coupling ring with the axial spring to the guide tube is advantageous preloaded and rotatably mounted axially limited to the guide tube, whereby the non-rotating, driving coupling ring is axially fixed.

Vorteilhaft ist das axial versetzbare, weiter vorteilhaft als Schiebehülse ausgebildete, Schaltglied mit dem antreibenden Kupplungsring über radiale Auskragungen und zugeordnete radiale Nuten drehformschlüssig verbunden, wodurch der Eingriff axial bewegungsfrei ausgebildet ist.The axially displaceable, further advantageously designed as a sliding sleeve, is advantageous Switching element with the driving coupling ring via radial projections and assigned radial grooves connected in a rotationally positive manner, as a result of which the engagement is axial is designed to be motionless.

Vorteilhaft ist die axial versetzbare Schiebehülse an einem ersten Stirnende mit dem antreibenden Zahnkranz über, weiter vorteilhaft radiale, Auskragungen und zugeordnete Nuten drehformschlüssig verbindbar, wodurch ein Betriebsmodus mit Drehantrieb wie « Schlagbohren » schaltbar ist.The axially displaceable sliding sleeve is advantageous at a first end with the driving sprocket over, further advantageous radial, cantilever and associated Grooves can be connected in a form-locking manner, which means that an operating mode with rotary drive such as « Impact drilling »is switchable.

Vorteilhaft ist die axial versetzbare Schiebehülse an einem zweiten Stirnende mit einem gehäusefesten Arretierkranz über, weiter vorteilhaft radiale, Auskragungen und zugeordnete Nuten drehformschlüssig verbindbar, wodurch ein Betriebsmodus mit Dreharretierung wie « Meisseln » schaltbar ist.The axially displaceable sliding sleeve is advantageous at a second end with a Locking ring fixed to the housing via, further advantageously radial, projections and associated Grooves can be connected in a form-locking manner, which means that an operating mode with a rotation lock such as « Chisels »is switchable.

Vorteilhaft ist die axial versetzbare Schiebehülse kürzer als der eingreifende Abstand zwischen dem antreibenden Zahnkranz und dem gehäusefesten Arretierkranz, wodurch ein drehfreier Betriebsmodus wie « Meissel positionieren » schaltbar ist.The axially displaceable sliding sleeve is advantageously shorter than the engaging distance between the driving sprocket and the housing-fixed locking ring, whereby a non-rotating operating mode such as «position chisel» can be switched.

Vorteilhaft ist die axial versetzbare Schiebehülse gegen den drehfreien Kupplungsring über eine Schiebefeder axial vorgespannt, wodurch bezüglich des drehformschlüssigen Eingriffs eine synchronisierte Umschaltung zwischen den Betriebsmodi möglich ist.The axially displaceable sliding sleeve against the non-rotating coupling ring is advantageous a sliding spring axially biased, thereby with respect to the positive engagement synchronized switching between the operating modes is possible.

Vorteilhaft ist die axial versetzbare Schiebehülse radial abgestuft, wodurch ein Axialanschlag für die Schiebefeder ausgebildet ist.The axially displaceable sliding sleeve is advantageously stepped radially, thereby creating an axial stop is designed for the sliding spring.

Die Erfindung wird bezüglich eines vorteilhaften Ausführungsbeispiels näher erläutert mit:The invention is explained in more detail with respect to an advantageous exemplary embodiment with:

  • Fig. 1 als Betriebsmodi-Schalteinheit im Modus IFig. 1 as an operating mode switching unit in mode I.
  • Fig. 2 als Modus IIFig. 2 as mode II
  • Fig. 3 als Modus IIIFig. 3 as mode III

    • Nach Fig. 1 weist eine als Einzelheit dargestellte Betriebsmodi-Schalteinheit einer nicht dargestellten drehenden und schlagenden Handwerkzeugmaschine mit einem Gehäuse 1 eine Rutschkupplung auf, welche zwischen einem hohlen, einen axial schlagenden Schlagkolben 2 beinhaltenden, abtreibenden Führungsrohr 3 und einem, auf dem Führungsrohr 3 drehbaren, antreibenden Zahnkranz 4 angeordnet ist, wobei eine, über eine nicht dargestellte Handhabe von Aussen manuell schaltbare, axial versetzbare Schiebehülse 5 drehformschlüssig in einen drehfrei zum Führungsrohr 3 gelagerten, antreibenden Kupplungsring 6 der Rutschkupplung eingreift. Die Rutschkupplung besteht aus dem zum Führungsrohr 3 axial fest positionierten, antreibenden Kupplungsring 6 und einem mit einer Axialfeder 7 zum Führungsrohr 3 vorgespannten sowie drehfest axial begrenzt beweglich gelagerten, abtreibenden Kupplungsring 8, welche nach dem Klauenprinzip axial reibkraftschlüssig ineinandergreifbar sind. Die axial versetzbare, umfänglich radial gekröpfte Schiebehülse 5 ist mit dem antreibenden Kupplungsring 6 über radiale Auskragungen 9 und zugeordnete radiale Nuten 10 drehformschlüssig verbunden. Im dargestellten Betriebsmode mit Drehantrieb ist die axial versetzbare Schiebehülse 5 an einem ersten Stirnende 11 mit dem antreibenden Zahnkranz 4 über radiale Auskragungen 9' und zugeordnete Nuten 10' drehformschlüssig verbunden.According to FIG. 1, an operating mode switching unit shown as a detail does not have one shown rotating and striking hand tool with a housing 1st a slip clutch, which between a hollow, an axially striking Percussion piston 2 containing, abortive guide tube 3 and one on the Guide tube 3 rotatable, driving ring gear 4 is arranged, one, via a Handle, not shown, manually switchable, axially displaceable sliding sleeve from the outside 5 rotatably in a non-rotatably mounted, driving to the guide tube 3 Coupling ring 6 engages the slip clutch. The slip clutch consists of the to Guide tube 3 axially fixed, driving clutch ring 6 and one with a Axial spring 7 preloaded to the guide tube 3 and axially movable in a rotationally fixed manner mounted, abortive coupling ring 8, which axially on the claw principle are frictionally interlocking. The axially displaceable, radially cranked circumference Sliding sleeve 5 is with the driving coupling ring 6 via radial projections 9 and assigned radial grooves 10 connected in a rotationally positive manner. In the operating mode shown with a rotary drive, the axially displaceable sliding sleeve 5 is on a first end face 11 the driving ring gear 4 via radial projections 9 'and associated grooves 10' rotationally connected.

    Nach Fig. 2 ist im dargestellten Betriebsmodus mit Dreharretierung die axial versetzbare Schiebehülse 5 an einem zweiten Stirnende 12 mit einem gehäusefesten Arretierkranz 13 über radiale Auskragungen 9" und zugeordnete Nuten 10" drehformschlüssig verbunden.2 is the axially displaceable in the illustrated operating mode with rotation lock Sliding sleeve 5 on a second end face 12 with a locking ring 13 fixed to the housing connected in a rotationally positive manner via radial projections 9 "and associated grooves 10".

    Nach Fig. 3 ist die mittig positionierte, axial versetzbare Schiebehülse 5 kürzer als der eingreifende Abstand zwischen dem antreibenden Zahnkranz 4 und dem gehäusefesten Arretierkranz 13, wodurch im dargestellten drehfreien Betriebsmodus kein Eingriff besteht. Die radial abgestufte Schiebehülse 5 ist von diesem Axialanschlag über eine Schiebefeder 14 gegen den drehfreien Kupplungsring 6 axial vorgespannt.3, the centrally positioned, axially displaceable sliding sleeve 5 is shorter than that engaging distance between the driving ring gear 4 and the housing-fixed Locking ring 13, whereby there is no intervention in the rotation-free operating mode shown. The radially stepped sliding sleeve 5 is from this axial stop via a sliding spring 14 axially biased against the non-rotating coupling ring 6.

    Claims (10)

    Betriebsmodi-Schalteinheit einer zumindest teilweise drehenden und schlagenden Handwerkzeugmaschine mit einer Rutschkupplung, welche zwischen einem hohlen, einen axial schlagenden Schlagkolben (2) beinhaltenden, abtreibenden Führungsrohr (3) und einem, auf dem Führungsrohr (3) drehbaren, antreibenden Zahnkranz (4) angeordnet ist, und über ein von Aussen manuell schaltbares, axial versetzbares Schaltglied in unterschiedliche Betriebsmodi schaltbar ist, wobei in wenigstens einem Betriebsmodus das Führungsrohr (3) drehangetrieben ist, dadurch gekennzeichnet, dass das axial versetzbare Schaltglied drehformschlüssig in einen drehfrei zum Führungsrohr (3) gelagerten, antreibenden Kupplungsring (6) der Rutschkupplung eingreift.Operating mode switching unit of an at least partially rotating and striking hand tool with a slip clutch, which is arranged between a hollow, driving tube (3) containing an axially striking piston (2) and a driving sprocket (4) which is rotatable on the guide tube (3) and can be switched to different operating modes via an axially displaceable switching element which can be manually switched from the outside, the guide tube (3) being rotatably driven in at least one operating mode, characterized in that the axially displaceable switching element is rotationally positively mounted in a non-rotatably mounted to the guide tube (3) engages the driving clutch ring (6) of the slip clutch. Betriebsmodi-Schalteinheit nach Anspruch 1, dadurch gekennzeichnet, dass die Rutschkupplung aus zwei gegeneinander mit einer Axialfeder (7) vorgespannten, axial reibkraftschlüssig ineinandergreifbaren Kupplungsringen (6, 8) besteht.Operating mode switching unit according to claim 1, characterized in that the slip clutch consists of two coupling rings (6, 8) which can be axially frictionally interlocked and are biased against each other by an axial spring (7). Betriebsmodi-Schalteinheit nach Anspruch 2, dadurch gekennzeichnet, dass der abtreibende Kupplungsring (8) mit der Axialfeder (7) zum Führungsrohr (3) vorgespannt sowie drehfest zum Führungsrohr (3) axial begrenzt beweglich gelagert ist.Operating mode switching unit according to claim 2, characterized in that the driven coupling ring (8) is preloaded with the axial spring (7) to the guide tube (3) and is mounted so as to be axially movable in a rotationally fixed manner relative to the guide tube (3). Betriebsmodi-Schalteinheit nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass axial versetzbare Schaltglied mit dem antreibenden Kupplungsring (6) über radiale Auskragungen (9) und zugeordnete radiale Nuten (10) drehformschlüssig verbunden ist.Operating mode switching unit according to one of the preceding claims, characterized in that axially displaceable switching element is connected to the driving coupling ring (6) via radial projections (9) and associated radial grooves (10) in a rotationally positive manner. Betriebsmodi-Schalteinheit nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass das axial versetzbare Schaltglied als Schiebehülse (5) ausgebildet ist.Operating mode switching unit according to one of the preceding claims, characterized in that the axially displaceable switching element is designed as a sliding sleeve (5). Betriebsmodi-Schalteinheit nach Anspruch 5, dadurch gekennzeichnet, dass die axial versetzbare Schiebehülse (5) an einem ersten Stirnende (11) mit dem antreibenden Zahnkranz (4) über, optional radiale, Auskragungen (9') und zugeordnete Nuten (10') drehformschlüssig verbindbar ist.Operating mode switching unit according to claim 5, characterized in that the axially displaceable sliding sleeve (5) on a first end face (11) with the driving sprocket (4) via, optionally radial, projections (9 ') and associated grooves (10') in a rotationally positive manner is connectable. Betriebsmodi-Schalteinheit nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass die axial versetzbare Schiebehülse (5) an einem zweiten Stirnende (12) mit einem gehäusefesten Arretierkranz (13) über, optional radiale, Auskragungen (9") und zugeordnete Nuten (10") drehformschlüssig verbindbar ist. Operating mode switching unit according to claim 5 or 6, characterized in that the axially displaceable sliding sleeve (5) at a second end face (12) with a locking collar (13) fixed to the housing via optionally radial projections (9 ") and associated grooves (10" ) can be connected in a rotationally positive manner. Betriebsmodi-Schalteinheit nach Anspruch 7, dadurch gekennzeichnet, dass die axial versetzbare Schiebehülse (5) kürzer als der eingreifende Abstand zwischen dem antreibenden Zahnkranz (4) und dem gehäusefesten Arretierkranz (13) ist.Operating mode switching unit according to claim 7, characterized in that the axially displaceable sliding sleeve (5) is shorter than the engaging distance between the driving ring gear (4) and the locking ring (13) fixed to the housing. Betriebsmodi-Schalteinheit nach einem der Ansprüche 5 bis 8, dadurch gekennzeichnet, dass die axial versetzbare Schiebehülse (6) gegen den drehfreien Kupplungsring (6) über eine Schiebefeder (14) axial vorgespannt ist.Operating mode switching unit according to one of claims 5 to 8, characterized in that the axially displaceable sliding sleeve (6) against the non-rotating coupling ring (6) is axially biased via a sliding spring (14). Betriebsmodi-Schalteinheit nach einem der vorherigen Ansprüche 5 bis 9, dadurch gekennzeichnet, dass die axial versetzbare Schiebehülse (5) radial abgestuft ist.Operating mode switching unit according to one of the preceding claims 5 to 9, characterized in that the axially displaceable sliding sleeve (5) is radially stepped.
    EP03405035A 2002-02-07 2003-01-27 Switch for changing operating mode in a percussion hammer Expired - Lifetime EP1334805B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE10205030 2002-02-07
    DE10205030A DE10205030A1 (en) 2002-02-07 2002-02-07 Operating mode switching unit of a hand machine tool

    Publications (2)

    Publication Number Publication Date
    EP1334805A1 true EP1334805A1 (en) 2003-08-13
    EP1334805B1 EP1334805B1 (en) 2004-11-24

    Family

    ID=27588466

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP03405035A Expired - Lifetime EP1334805B1 (en) 2002-02-07 2003-01-27 Switch for changing operating mode in a percussion hammer

    Country Status (5)

    Country Link
    US (1) US6976545B2 (en)
    EP (1) EP1334805B1 (en)
    JP (1) JP4212912B2 (en)
    CN (1) CN1309532C (en)
    DE (2) DE10205030A1 (en)

    Cited By (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB2392966A (en) * 2002-09-13 2004-03-17 Black & Decker Inc Power tool with overload clutch and an arrangement for detecting tool bit blocking
    GB2415161A (en) * 2004-05-27 2005-12-21 Bosch Gmbh Robert Hand-held power tool with slip clutch
    US9873192B2 (en) 2013-12-11 2018-01-23 Black & Decker Inc. Rotary hammer

    Families Citing this family (47)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    WO2004024398A1 (en) * 2002-09-13 2004-03-25 Black & Decker Inc Rotary tool
    US7781559B2 (en) * 2003-08-01 2010-08-24 Cemedine Co., Ltd. Curable composition and method for producing the same
    JP4405900B2 (en) * 2004-03-10 2010-01-27 株式会社マキタ Impact driver
    DE102004012433A1 (en) * 2004-03-13 2005-09-29 Robert Bosch Gmbh Hand tool
    DE102004030760A1 (en) * 2004-06-25 2006-01-19 Robert Bosch Gmbh Device with a torque limiting unit
    DE102004034268B3 (en) * 2004-07-15 2005-12-29 Wacker Construction Equipment Ag Rotary hammer with safety coupling
    DE102004047470A1 (en) * 2004-09-30 2006-04-06 Robert Bosch Gmbh Hand tool, in particular drill and / or percussion hammer
    DE102004051911A1 (en) * 2004-10-26 2006-04-27 Robert Bosch Gmbh Hand tool, in particular drill
    US20060213675A1 (en) * 2005-03-24 2006-09-28 Whitmire Jason P Combination drill
    GB2427006A (en) * 2005-06-10 2006-12-13 Black & Decker Inc Overload clutch with two predetermined torque levels
    DE102005041448A1 (en) * 2005-08-31 2007-03-01 Robert Bosch Gmbh Hammer drill, comprises manually operated switch with outer shell and sealing ring
    US7410007B2 (en) * 2005-09-13 2008-08-12 Eastway Fair Company Limited Impact rotary tool with drill mode
    JP4456559B2 (en) * 2005-12-02 2010-04-28 株式会社マキタ Work tools
    DE102005062777A1 (en) * 2005-12-28 2007-07-05 Robert Bosch Gmbh Striker for a striking mechanism
    JP4812471B2 (en) * 2006-03-09 2011-11-09 株式会社マキタ Work tools
    ES2308666T3 (en) * 2006-05-19 2008-12-01 BLACK & DECKER, INC. WORKING MODE CHANGE MECHANISM FOR A MOTOR TOOL.
    JP2008012665A (en) * 2006-07-01 2008-01-24 Black & Decker Inc Tool holder for pavement breaker
    US20080006419A1 (en) * 2006-07-01 2008-01-10 Black & Decker Inc. Tool holder connector for powered hammer
    EP1872914B1 (en) * 2006-07-01 2010-09-22 Black & Decker, Inc. A Pavement Breaker
    JP2008012661A (en) 2006-07-01 2008-01-24 Black & Decker Inc Beat piece wear indicator for hammer drill
    US7413026B2 (en) * 2006-07-01 2008-08-19 Black & Decker Inc. Lubricant system for powered hammer
    JP4664253B2 (en) * 2006-08-24 2011-04-06 株式会社マキタ Impact tool
    SE531658C2 (en) * 2006-10-02 2009-06-23 Atlas Copco Rock Drills Ab Percussion along with rock drill and rock drill rig
    WO2008157346A1 (en) 2007-06-15 2008-12-24 Black & Decker Inc. Hybrid impact tool
    US7861799B2 (en) * 2008-03-21 2011-01-04 Makita Corporation Impact tool
    US9193053B2 (en) 2008-09-25 2015-11-24 Black & Decker Inc. Hybrid impact tool
    US8251158B2 (en) 2008-11-08 2012-08-28 Black & Decker Inc. Multi-speed power tool transmission with alternative ring gear configuration
    US8631880B2 (en) * 2009-04-30 2014-01-21 Black & Decker Inc. Power tool with impact mechanism
    DE102009050013A1 (en) * 2009-10-21 2011-04-28 Metabowerke Gmbh Motor driven power tool
    US8460153B2 (en) * 2009-12-23 2013-06-11 Black & Decker Inc. Hybrid impact tool with two-speed transmission
    US8584770B2 (en) 2010-03-23 2013-11-19 Black & Decker Inc. Spindle bearing arrangement for a power tool
    US9248529B2 (en) * 2010-09-13 2016-02-02 Kabushiki Kaisha Toyota Jidoshokki Assembling apparatus
    DE102011078628A1 (en) * 2011-07-05 2013-01-10 Robert Bosch Gmbh chlagwerkvorrichtung
    DE102011081617A1 (en) * 2011-08-26 2013-02-28 Hilti Aktiengesellschaft Hand-held machine tool
    DE102012209446A1 (en) * 2012-06-05 2013-12-05 Robert Bosch Gmbh Hand machine tool device
    US9630307B2 (en) 2012-08-22 2017-04-25 Milwaukee Electric Tool Corporation Rotary hammer
    US9073182B2 (en) * 2012-10-31 2015-07-07 Mou-Tang Liou Screwing tool
    CN104837427B (en) 2012-11-14 2017-09-22 不列颠哥伦比亚癌症机构分部 Tubulose hammer drill accessory
    KR101412092B1 (en) * 2013-11-28 2014-07-02 주식회사 엔와이테크 Hydraulic punching apparatus of low noise type
    DE102014104367A1 (en) * 2014-03-28 2015-10-01 Röhm Gmbh Drilling device and slip clutch for a drilling device
    CN104373523B (en) * 2014-08-21 2017-02-15 舒捷医疗科技（苏州）有限公司 Centrifugal clutch and speed-variable electric tool
    DE102015226085A1 (en) * 2015-12-18 2017-06-22 Robert Bosch Gmbh Hand tool with a switching unit
    CN107838878A (en) * 2016-09-20 2018-03-27 苏州宝时得电动工具有限公司 A kind of power tool
    WO2018204741A1 (en) 2017-05-05 2018-11-08 Milwaukee Electric Tool Corporation Power tool
    CN109253194B (en) * 2018-10-23 2023-10-27 天津大学 Mechanical clutch and brake function system and clutch and brake function conversion method
    WO2022246207A1 (en) * 2021-05-21 2022-11-24 Milwaukee Electric Tool Corporation Chisel hammer
    JP2022188999A (en) * 2021-06-10 2022-12-22 株式会社マキタ Rotary striking tool

    Citations (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US5456324A (en) * 1993-11-26 1995-10-10 Hitachi Koki Company Limited Percussion hammer
    JPH09239675A (en) * 1996-03-08 1997-09-16 Hitachi Koki Co Ltd Operation mode switching device for hammer drill
    US6176321B1 (en) * 1998-09-16 2001-01-23 Makita Corporation Power-driven hammer drill having an improved operating mode switch-over mechanism

    Family Cites Families (11)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US423658A (en) * 1890-03-18 William bechtold
    DE2136523C3 (en) * 1971-07-21 1983-11-03 Hilti AG, 9494 Schaan Electric hammer
    DE2516406C3 (en) * 1975-04-15 1981-11-19 Robert Bosch Gmbh, 7000 Stuttgart Hammer drill
    DE2728961C2 (en) * 1977-06-27 1991-08-08 Hilti Ag, Schaan Rotary hammer with lockable tool holder
    DE3527091A1 (en) * 1985-07-29 1987-01-29 Hilti Ag DRILLING DEVICE
    DE3538166A1 (en) * 1985-10-26 1987-04-30 Hilti Ag DRILL HAMMER WITH TURN LOCK
    DE3804414A1 (en) 1988-02-12 1989-08-24 Hilti Ag Hammer drill with ball catch clutch
    DE4009762A1 (en) 1990-03-27 1991-10-02 Hilti Ag Chisel hammer with guide cylinder - is rotatably locked in relation to housing, and has externally operated adjustment device for support ring
    US5346023A (en) * 1993-02-11 1994-09-13 Hitachi Koki Company Limited Slipping torque changing apparatus for impact tool
    JP3582760B2 (en) * 1997-04-18 2004-10-27 日立工機株式会社 Hammer drill
    JP3688943B2 (en) * 1999-08-26 2005-08-31 株式会社マキタ Hammer drill

    Patent Citations (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US5456324A (en) * 1993-11-26 1995-10-10 Hitachi Koki Company Limited Percussion hammer
    JPH09239675A (en) * 1996-03-08 1997-09-16 Hitachi Koki Co Ltd Operation mode switching device for hammer drill
    US6176321B1 (en) * 1998-09-16 2001-01-23 Makita Corporation Power-driven hammer drill having an improved operating mode switch-over mechanism

    Non-Patent Citations (1)

    * Cited by examiner, † Cited by third party
    Title
    PATENT ABSTRACTS OF JAPAN vol. 1998, no. 01 30 January 1998 (1998-01-30) *

    Cited By (6)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB2392966A (en) * 2002-09-13 2004-03-17 Black & Decker Inc Power tool with overload clutch and an arrangement for detecting tool bit blocking
    GB2392966B (en) * 2002-09-13 2006-05-31 Black & Decker Inc Rotary tool with overload clutch
    GB2415161A (en) * 2004-05-27 2005-12-21 Bosch Gmbh Robert Hand-held power tool with slip clutch
    GB2415161B (en) * 2004-05-27 2006-12-13 Bosch Gmbh Robert Hand-held power tool, in particular rotary and/or impact hammer
    US7303026B2 (en) 2004-05-27 2007-12-04 Robert Bosch Gmbh Hand power tool, in particular drill hammer and/or jackhammer
    US9873192B2 (en) 2013-12-11 2018-01-23 Black & Decker Inc. Rotary hammer

    Also Published As

    Publication number Publication date
    CN1436634A (en) 2003-08-20
    US20030146007A1 (en) 2003-08-07
    CN1309532C (en) 2007-04-11
    US6976545B2 (en) 2005-12-20
    JP4212912B2 (en) 2009-01-21
    JP2003236769A (en) 2003-08-26
    EP1334805B1 (en) 2004-11-24
    DE50300160D1 (en) 2004-12-30
    DE10205030A1 (en) 2003-08-21

    Similar Documents

    Publication Publication Date Title
    EP1334805B1 (en) Switch for changing operating mode in a percussion hammer
    EP2097225B1 (en) Hand-held power tool
    DE60127471T2 (en) Mechanism for cam drive
    EP1170096B1 (en) Combined power tool
    EP0463416B1 (en) Electrical hammerdrill
    GB1576795A (en) Hammer drill
    US3789933A (en) Hammer drill
    DE1964083B2 (en) ROCK DRILLING MACHINE
    EP0444030B1 (en) Drilling hammer
    US3876014A (en) Rotary hammer with rotation stop control trigger
    EP0437716B1 (en) Electrically driven handtool
    EP2134512B1 (en) Gearbox device
    EP2861382A1 (en) Transmission device
    EP3053708B1 (en) Accessory device
    DE3329005A1 (en) Hammer drill
    DE102004055236A1 (en) Hand tool machine e.g. hammer drill, for releasing of screw, has gear that stands in contact with connecting sleeve, where another connecting sleeve has external tooth that rotatably and continuously stands in contact with sprocket pinion
    EP0419866A2 (en) Drill hammer
    EP2104594B1 (en) Hand held power tool
    DE3227707A1 (en) Percussion drill
    DE102009028572A1 (en) Adapter for e.g. electric machine tool for converting oscillating rotary motion of drive shaft into rotational movement of driven shaft, has adapter part whose direction is interrupted or continued based on direction change of driven shaft
    EP1293305A1 (en) Toolholder for Portable Percussion Tool
    DE3329010A1 (en) Hammer drill
    DE102012005864A1 (en) Tumbling shaft drive structure for pneumatic spring hammer mechanism in drill and percussion hammer, has control shaft and safety clutch that are switched to transmission state to transmit torque of hub to output portion or carrier
    EP3782766A1 (en) Handheld machine tool
    WO2008107250A1 (en) Gearbox device

    Legal Events

    Date Code Title Description
    PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

    Free format text: ORIGINAL CODE: 0009012

    AK Designated contracting states

    Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT SE SI SK TR

    AX Request for extension of the european patent

    Extension state: AL LT LV MK RO

    17P Request for examination filed

    Effective date: 20040213

    GRAP Despatch of communication of intention to grant a patent

    Free format text: ORIGINAL CODE: EPIDOSNIGR1

    AKX Designation fees paid

    Designated state(s): CH DE FR GB LI SE

    GRAS Grant fee paid

    Free format text: ORIGINAL CODE: EPIDOSNIGR3

    GRAA (expected) grant

    Free format text: ORIGINAL CODE: 0009210

    AK Designated contracting states

    Kind code of ref document: B1

    Designated state(s): CH DE FR GB LI SE

    REG Reference to a national code

    Ref country code: GB

    Ref legal event code: FG4D

    Free format text: NOT ENGLISH

    REG Reference to a national code

    Ref country code: CH

    Ref legal event code: EP

    Ref country code: SE

    Ref legal event code: TRGR

    REF Corresponds to:

    Ref document number: 50300160

    Country of ref document: DE

    Date of ref document: 20041230

    Kind code of ref document: P

    GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

    Effective date: 20050228

    PLBE No opposition filed within time limit

    Free format text: ORIGINAL CODE: 0009261

    STAA Information on the status of an ep patent application or granted ep patent

    Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

    ET Fr: translation filed
    26N No opposition filed

    Effective date: 20050825

    REG Reference to a national code

    Ref country code: FR

    Ref legal event code: PLFP

    Year of fee payment: 14

    REG Reference to a national code

    Ref country code: FR

    Ref legal event code: PLFP

    Year of fee payment: 15

    REG Reference to a national code

    Ref country code: FR

    Ref legal event code: PLFP

    Year of fee payment: 16

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: SE

    Payment date: 20190121

    Year of fee payment: 17

    REG Reference to a national code

    Ref country code: SE

    Ref legal event code: EUG

    REG Reference to a national code

    Ref country code: SE

    Ref legal event code: EUG

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: SE

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20200128

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: GB

    Payment date: 20220119

    Year of fee payment: 20

    Ref country code: DE

    Payment date: 20220119

    Year of fee payment: 20

    Ref country code: CH

    Payment date: 20220119

    Year of fee payment: 20

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: FR

    Payment date: 20220119

    Year of fee payment: 20

    REG Reference to a national code

    Ref country code: DE

    Ref legal event code: R071

    Ref document number: 50300160

    Country of ref document: DE

    REG Reference to a national code

    Ref country code: CH

    Ref legal event code: PL

    REG Reference to a national code

    Ref country code: GB

    Ref legal event code: PE20

    Expiry date: 20230126

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: GB

    Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

    Effective date: 20230126