EP1334805B1 - Unité de commutation pour des modes de fonctionnement pour un marteau à percussion - Google Patents

Unité de commutation pour des modes de fonctionnement pour un marteau à percussion Download PDF

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Publication number
EP1334805B1
EP1334805B1 EP03405035A EP03405035A EP1334805B1 EP 1334805 B1 EP1334805 B1 EP 1334805B1 EP 03405035 A EP03405035 A EP 03405035A EP 03405035 A EP03405035 A EP 03405035A EP 1334805 B1 EP1334805 B1 EP 1334805B1
Authority
EP
European Patent Office
Prior art keywords
axially
operating mode
switching unit
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.)
Expired - Lifetime
Application number
EP03405035A
Other languages
German (de)
English (en)
Other versions
EP1334805A1 (fr
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/fr
Application granted granted Critical
Publication of EP1334805B1 publication Critical patent/EP1334805B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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 according to the preamble of claim 1.
  • Such Switching unit is from document JP 9 239 675 A known.
  • 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 axially displaceable sliding sleeve is advantageously stepped radially, thereby creating an axial stop is designed for the sliding spring.

Landscapes

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

Claims (10)

  1. Unité de commutation de mode de fonctionnement d'un appareil portatif au moins partiellement à rotation et à percussion, avec un moyen d'accouplement glissant qui est disposé entre un tube de guidage creux mené (3), contenant un piston percutant à percussion axiale (2), et une couronne dentée menante (4) tournant sur le tube de guidage (3) et qui est commutable dans différents modes de fonctionnement par l'intermédiaire d'un organe de commutation déplaçable axialement et commutable manuellement de l'extérieur, dans au moins un mode de fonctionnement le tube de guidage (3) étant entraíné en rotation, caractérisée en ce que l'organe de commutation déplaçable axialement s'engage par complémentarité de formes en rotation dans un anneau d'accouplement menant (6) du moyen d'accouplement glissant qui est monté de manière libre en rotation par rapport au tube de guidage (3).
  2. Unité de commutation de mode de fonctionnement selon la revendication 1, caractérisée en ce que le moyen d'accouplement glissant se compose de deux anneaux d'accouplement (6, 8) précontraints l'un contre l'autre par un ressort axial (7) et venant en prise mutuelle axiale par conjugaison d'efforts de friction.
  3. Unité de commutation de mode de fonctionnement selon la revendication 2, caractérisée en ce que l'anneau d'accouplement mené (8) est précontraint vers le tube de guidage (3) par le ressort axial (7) et est solidarisé en rotation au tube de guidage (3) avec une mobilité axiale limitée.
  4. Unité de commutation de mode de fonctionnement selon une des revendications précédentes, caractérisée en ce que l'organe de commutation déplaçable axialement est relié par complémentarité de formes en rotation à l'anneau d'accouplement menant (6) par l'intermédiaire de parties saillantes radiales (9) et de rainures radiales associées (10).
  5. Unité de commutation de mode de fonctionnement selon une des revendications précédentes, caractérisée en ce que l'organe de commutation déplaçable axialement est conformé en manchon coulissant (5).
  6. Unité de commutation de mode de fonctionnement selon la revendication 5, caractérisée en ce qu'au niveau de sa première extrémité frontale (11) le manchon coulissant déplaçable axialement (5) peut être relié par complémentarité de formes en rotation à la couronne dentée menante (4) par l'intermédiaire de parties saillantes optionnellement radiales (9') et de rainures associées (10').
  7. Unité de commutation de mode de fonctionnement selon la revendication 5 ou 6, caractérisée en ce qu'au niveau de sa seconde extrémité frontale (12) le manchon coulissant déplaçable axialement (5) peut être relié par complémentarité de formes en rotation à une couronne d'arrêt (13) solidaire du carter par l'intermédiaire de parties saillantes optionnellement radiales (9") et de rainures associées (10").
  8. Unité de commutation de mode de fonctionnement selon la revendication 7, caractérisée en ce que le manchon coulissant déplaçable axialement (5) est plus court que la distance d'engrènement entre la couronne dentée menante (4) et la couronne d'arrêt (13) solidaire du carter.
  9. Unité de commutation de mode de fonctionnement selon une des revendications 5 à 8, caractérisée en ce que le manchon coulissant déplaçable axialement (6) est précontraint axialement contre l'anneau d'accouplement en libre rotation (6) par l'intermédiaire d'un ressort de poussée (14).
  10. Unité de commutation de mode de fonctionnement selon une des revendications précédentes 5 à 9, caractérisée en ce que le manchon coulissant déplaçable axialement (5) est étagé radialement.
EP03405035A 2002-02-07 2003-01-27 Unité de commutation pour des modes de fonctionnement pour un marteau à percussion Expired - Lifetime EP1334805B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10205030 2002-02-07
DE10205030A DE10205030A1 (de) 2002-02-07 2002-02-07 Betriebsmodi-Schalteinheit einer Handwerkzeugmaschine

Publications (2)

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

Family

ID=27588466

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03405035A Expired - Lifetime EP1334805B1 (fr) 2002-02-07 2003-01-27 Unité de commutation pour des modes de fonctionnement pour un marteau à percussion

Country Status (5)

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

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Publication number Priority date Publication date Assignee Title
CN100509302C (zh) * 2005-12-02 2009-07-08 株式会社牧田 作业工具

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DE102004047470A1 (de) * 2004-09-30 2006-04-06 Robert Bosch Gmbh Handwerkzeugmaschine, insbesondere Bohr- und/oder Schlaghammer
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Also Published As

Publication number Publication date
DE50300160D1 (de) 2004-12-30
US20030146007A1 (en) 2003-08-07
US6976545B2 (en) 2005-12-20
JP4212912B2 (ja) 2009-01-21
CN1309532C (zh) 2007-04-11
EP1334805A1 (fr) 2003-08-13
DE10205030A1 (de) 2003-08-21
JP2003236769A (ja) 2003-08-26
CN1436634A (zh) 2003-08-20

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