EP1648663A2 - Mecanisme de percussion a piston creux comportant une ouverture de compensation pneumatique et de fonctionnement a vide - Google Patents

Mecanisme de percussion a piston creux comportant une ouverture de compensation pneumatique et de fonctionnement a vide

Info

Publication number
EP1648663A2
EP1648663A2 EP04763463A EP04763463A EP1648663A2 EP 1648663 A2 EP1648663 A2 EP 1648663A2 EP 04763463 A EP04763463 A EP 04763463A EP 04763463 A EP04763463 A EP 04763463A EP 1648663 A2 EP1648663 A2 EP 1648663A2
Authority
EP
European Patent Office
Prior art keywords
openings
idle
air spring
drive piston
piston
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
EP04763463A
Other languages
German (de)
English (en)
Other versions
EP1648663B1 (fr
Inventor
Rudolf Berger
Wolfgang Schmid
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.)
Wacker Construction Equipment AG
Original Assignee
Wacker Construction Equipment 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 Wacker Construction Equipment AG filed Critical Wacker Construction Equipment AG
Publication of EP1648663A2 publication Critical patent/EP1648663A2/fr
Application granted granted Critical
Publication of EP1648663B1 publication Critical patent/EP1648663B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D11/00—Portable percussive tools with electromotor or other motor drive
    • B25D11/06—Means for driving the impulse member
    • B25D11/12—Means for driving the impulse member comprising a crank mechanism
    • B25D11/125—Means for driving the impulse member comprising a crank mechanism with a fluid cushion between the crank drive and the striking body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D11/00—Portable percussive tools with electromotor or other motor drive
    • B25D11/005—Arrangements for adjusting the stroke of the impulse member or for stopping the impact action when the tool is lifted from the working surface
    • 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
    • B25D2250/035—Bleeding holes, e.g. in piston guide-sleeves
    • 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
    • B25D2250/131—Idling mode of tools

Definitions

  • control element is designed as a control sleeve which surrounds the guide tube.
  • the drive piston is arranged in a rotationally fixed manner, while the guide tube and the control sleeve can be rotated together relative to the drive piston.
  • This embodiment of the air spring hammer mechanism is particularly well suited for a hammer drill, in which, in addition to the striking movement, a rotary movement must also be transmitted to the tool.
  • FIG. 4a shows a sectional view of the other air spring hammer mechanism according to the invention for a rotary hammer in the idle operating position
  • Ventilation slots 13 which face each other and which extend in the axial direction of the drive piston 3 and completely penetrate the guide wall 5.
  • the axial length of the ventilation slots 13 is dimensioned such that it is greater than an axial height of the piston head 7 of the percussion piston.
  • a plurality of idle openings 16 are formed in the guide tube 15 and extend in the radial direction.
  • the idle openings 16 can be arranged distributed on a line in the axial direction, such as. B. in Fig. 1 can be seen.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Earth Drilling (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

L'invention concerne un mécanisme de percussion à ressort pneumatique comprenant un piston moteur (3) qui peut être déplacé selon un mouvement de va-et-vient axial et qui est configuré de manière creuse au niveau de sa face avant, un piston de percussion (6) pouvant être déplacé dans ladite cavité. Une fente de ventilation (13) est ménagée dans une paroi de guidage (5) du piston moteur (3). Ledit piston moteur (3) peut être guidé dans un tuyau de guidage (15). Ce tuyau de guidage (15) comporte plusieurs ouvertures de fonctionnement à vide (16). Un élément de commande (17) déplaçable est disposé sur la face extérieure du tuyau de guidage (15) et comporte des ouvertures de commande (18) qui correspondent auxdites ouvertures de fonctionnement à vide (16). Dans un mode de fonctionnement à vide, l'élément de commande (17) se trouve dans une position d'ouverture dans laquelle un espace creux (11) peut être relié de manière communicante avec l'environnement, par l'intermédiaire de la fente de ventilation (13), des ouvertures de fonctionnement à vide (16) et des ouvertures de commande (18).
EP04763463A 2003-07-24 2004-07-23 Mecanisme de percussion a piston creux comportant une ouverture de compensation pneumatique et de fonctionnement a vide Expired - Lifetime EP1648663B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10333799A DE10333799B3 (de) 2003-07-24 2003-07-24 Hohlkolbenschlagwerk mit Luftausgleichs- und Leerlauföffnung
PCT/EP2004/008294 WO2005009688A2 (fr) 2003-07-24 2004-07-23 Mecanisme de percussion a piston creux comportant une ouverture de compensation pneumatique et de fonctionnement a vide

Publications (2)

Publication Number Publication Date
EP1648663A2 true EP1648663A2 (fr) 2006-04-26
EP1648663B1 EP1648663B1 (fr) 2008-06-18

Family

ID=34071889

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04763463A Expired - Lifetime EP1648663B1 (fr) 2003-07-24 2004-07-23 Mecanisme de percussion a piston creux comportant une ouverture de compensation pneumatique et de fonctionnement a vide

Country Status (6)

Country Link
US (2) US20060124333A1 (fr)
EP (1) EP1648663B1 (fr)
JP (1) JP4751324B2 (fr)
DE (2) DE10333799B3 (fr)
ES (1) ES2305815T3 (fr)
WO (1) WO2005009688A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9925653B2 (en) 2013-07-05 2018-03-27 Black & Decker Inc. Hammer drill

Families Citing this family (18)

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DE102006010892A1 (de) * 2006-03-09 2007-09-13 Robert Bosch Gmbh Werkzeugmaschine und Verfahren zum Betrieb einer Werkzeugmaschine
SE531658C2 (sv) * 2006-10-02 2009-06-23 Atlas Copco Rock Drills Ab Slagverk jämte bergborrmaskin och bergborrigg
EP2163355A1 (fr) * 2008-09-12 2010-03-17 AEG Electric Tools GmbH Outil électrique comprenant un entraînement oscillant ou vilebrequin ayant une masse réduite
US8636081B2 (en) 2011-12-15 2014-01-28 Milwaukee Electric Tool Corporation Rotary hammer
WO2013116680A1 (fr) 2012-02-03 2013-08-08 Milwaukee Electric Tool Corporation Marteau rotatif
DE102012206451B4 (de) * 2012-04-19 2020-12-10 Hilti Aktiengesellschaft Handwerkzeugmaschine
DE102012208986A1 (de) * 2012-05-29 2013-12-05 Hilti Aktiengesellschaft Meißelnde Werkzeugmaschine
US20150136826A1 (en) * 2012-05-29 2015-05-21 Hilti Aktiengesellschaft Combustion driven fastener setting device
DE102012210088A1 (de) * 2012-06-15 2013-12-19 Hilti Aktiengesellschaft Werkzeugmaschine
US8991841B2 (en) 2012-09-04 2015-03-31 Msi Defense Solutions, Llc Air spring, air strut and air suspension system with a linearized spring rate
GB201216903D0 (en) * 2012-09-21 2012-11-07 Black & Decker Inc A hammer drill
GB201216905D0 (en) * 2012-09-21 2012-11-07 Black & Decker Inc A hammer drill
EP2857150A1 (fr) * 2013-10-03 2015-04-08 HILTI Aktiengesellschaft Machine-outil manuelle
US20150273676A1 (en) * 2014-03-27 2015-10-01 Michael B. Spektor Optimized pneumatic hammer
WO2015143762A1 (fr) 2014-03-27 2015-10-01 Techtronic Power Tools Technology Limited Dispositif d'entraînement d'attache motorisé et son procédé de fonctionnement
CN104265154A (zh) * 2014-09-19 2015-01-07 宜昌市五环钻机具有限责任公司 一种新型潜孔冲击器
DE102020208757A1 (de) 2020-07-14 2022-01-20 Robert Bosch Gesellschaft mit beschränkter Haftung Schlagwerkvorrichtung für eine Handwerkzeugmaschine
US11833652B2 (en) 2022-01-25 2023-12-05 Hilti Aktiengesellschaft Power tool

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US3559751A (en) * 1969-01-16 1971-02-02 Sakuji Yamada Percussion device
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US3827507A (en) * 1972-09-18 1974-08-06 Technology Inc Const Hydraulically powered demolition device
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DE3826213A1 (de) * 1988-08-02 1990-02-15 Bosch Gmbh Robert Bohr- oder schlaghammer
JP3424880B2 (ja) * 1995-08-18 2003-07-07 株式会社マキタ ハンマードリル
JP3292969B2 (ja) * 1995-08-18 2002-06-17 株式会社マキタ ハンマードリル
JP3292972B2 (ja) * 1996-03-29 2002-06-17 株式会社マキタ 打撃工具
DE19714288A1 (de) * 1997-04-07 1998-10-08 Hilti Ag Bohr- und/oder Meisselgerät
DE19728729C2 (de) * 1997-07-04 2000-11-09 Wacker Werke Kg Luftfeder-Schlagwerk mit Luftausgleich
JPH1193971A (ja) * 1997-09-19 1999-04-06 Exedy Corp ダンパーディスク組立体のスプラインハブ
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DE602004026134D1 (de) * 2003-04-01 2010-05-06 Makita Corp Kraftwerkzeug
TWM258839U (en) * 2004-05-21 2005-03-11 Chen Shiou Ru Airflow controlling structure of pneumatic tool
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Title
See references of WO2005009688A2 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9925653B2 (en) 2013-07-05 2018-03-27 Black & Decker Inc. Hammer drill

Also Published As

Publication number Publication date
JP4751324B2 (ja) 2011-08-17
EP1648663B1 (fr) 2008-06-18
DE502004007398D1 (de) 2008-07-31
DE10333799B3 (de) 2005-02-17
WO2005009688A2 (fr) 2005-02-03
US20060124333A1 (en) 2006-06-15
WO2005009688A3 (fr) 2005-04-07
JP2006528558A (ja) 2006-12-21
US7726414B2 (en) 2010-06-01
US20080073096A1 (en) 2008-03-27
ES2305815T3 (es) 2008-11-01

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