EP1202840B1 - Bohr- oder schlaghammer - Google Patents

Bohr- oder schlaghammer Download PDF

Info

Publication number
EP1202840B1
EP1202840B1 EP00938558A EP00938558A EP1202840B1 EP 1202840 B1 EP1202840 B1 EP 1202840B1 EP 00938558 A EP00938558 A EP 00938558A EP 00938558 A EP00938558 A EP 00938558A EP 1202840 B1 EP1202840 B1 EP 1202840B1
Authority
EP
European Patent Office
Prior art keywords
damping
spring
guide tube
percussion
rotary
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
EP00938558A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1202840A1 (de
Inventor
Karl Frauhammer
Frank Mueller
Gerhard Meixner
Heinz Schnerring
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 EP1202840A1 publication Critical patent/EP1202840A1/de
Application granted granted Critical
Publication of EP1202840B1 publication Critical patent/EP1202840B1/de
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
    • 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

Definitions

  • the invention is based on a hammer drill or percussion hammer according to the preamble of claim 1.
  • a hammer drill or percussion hammer is known, the one in one Has axially slidably mounted guide tube.
  • In the guide tube is an axially reciprocating piston housed over an air cushion with a bat is coupled.
  • a return spring acts on the guide tube with a restoring force towards a front one Starting position in which the air cushion over a Opening in the guide tube is vented so that the striking mechanism of the hammer drill or percussion hammer goes to idle and none axial impacts can be exerted on a tool.
  • the hammer drill or percussion hammer according to the invention with the features of claim 1 has the advantage that the striking mechanism caused vibrations in a relatively simple manner are reducible.
  • Figures 1 to 3 each show one Section through the front part of a hammer drill, whereby in a half section through the top half of the picture Hammer drill in an idle position and in the lower Half of the picture a half section through the rotary hammer in a striking position is shown.
  • 10 denotes a hammer drill, which is a housing 11, in which a striking mechanism 12 is accommodated is. Inside the housing 11 is a guide tube 13 in Bearing points 14, 15 rotatable and axially displaceable to a limited extent stored.
  • the guide tube takes one in a known manner Piston 16, a racket 17 and an anvil 18.
  • the Piston 16 can be driven to and fro via a connecting rod 19. At its end facing away from the connecting rod 19, this forms Guide tube 13 a tool holder 20 for receiving a tool not shown.
  • the striker 18 is provided with a circumferential collar 21 over which he turns backwards, towards the piston 16, over a Damping ring 22 and a stop ring 23 and one Snap ring 24 can be supported on the guide tube 13. Between Piston 16 and racket 17 form an air cushion space 25, the radial through bores 26 in the guide tube 13 is ventilated.
  • the hammer drill 10 is in the upper half of FIG. 1 shown in an idle position in which the guide tube 13 from the return spring 27 towards the tool holder 20 is pushed into a front starting position.
  • the force of the return spring 27 is on the disc 29, which has a first axial stop on the guide tube side forms, first on a damping element 30 and then over a washer 31 and a retaining ring 34 on the Transfer guide tube 13.
  • the holding disc 31 forms a second axial stop on the housing side.
  • Forward is the axial displacement of the guide tube 13 by a Washer 32 limits the locking ring 34 as the housing side front stop serves.
  • the washer 32 is in turn axially supported on the bearing 14 via an O-ring 33.
  • the drill hammer 10 is in the lower half of FIG. 1 shown in the striking position in which the through holes 26 are radially covered by the bearing 15, so that the Air cushion space 25 is sealed.
  • This is the consequence the reciprocating movement of the piston 16 a structure of an air cushion in the air cushion space 25, about that the racket 17 also driven back and forth
  • the bat 17 then acts on the striker 18 with axial impacts that this on the not shown Dispenses tool in the tool holder 20, the striker 18 as reaction forces from the tool towards the striking mechanism 12 experienced setbacks. These setbacks will be via the damping ring 22, the stop ring 23 and the Transfer the snap ring 24 to the guide tube 13.
  • the guide tube 13 is to the rear via the return spring 27 cushioned relative to the housing 11. In the striking position the return spring 27 is compressed so far, however, that the damping element separate from the return spring 27 30 supported on the housing side directly on the bearing ring 28 is. In this way, the guide tube 13 transferred setbacks of the striker 18 bypassing the Return spring 27 received by the housing 11 and the damping element 30 effectively steamed.
  • the embodiment of Figure 2 differs from the embodiment of Figure 1 only in that that instead of a damping element 30 a plate spring assembly 36 is used. All other parts are, as with the following third exemplary embodiment according to FIG. 3, identified by the same reference numerals. Because of the Disc spring assembly 36 can be compared to the damping element 30 from Figure 1 larger travel of the guide tube 13 after a setback by the striker 18, whereby one different from the damping element 30 Damping can be achieved.
  • a damping element 30 with a plate spring assembly 36 or a coil spring 37 or other damping or to combine spring members, this being both under parallel, as well as in series can.
  • the hammer drill 10 can also be used as a pure percussion hammer formed without rotary drive of the guide tube 13 his.
  • additional damping or spring member 30, 36, 37 can also by the return spring be realized, provided that this one receives nonlinear spring or damping characteristics.
  • Essential is that the spring or attenuator in the Impact position of the guide tube 13 between the guide tube 13 and the housing 11 one of the return spring 27 in Deviating range of the idle position of the guide tube Has spring or damping characteristics.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Earth Drilling (AREA)
  • Drilling And Boring (AREA)
EP00938558A 1999-07-20 2000-05-16 Bohr- oder schlaghammer Expired - Lifetime EP1202840B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19933972A DE19933972A1 (de) 1999-07-20 1999-07-20 Bohr- oder Schlaghammer
DE19933972 1999-07-20
PCT/DE2000/001549 WO2001005558A1 (de) 1999-07-20 2000-05-16 Bohr- oder schlaghammer

Publications (2)

Publication Number Publication Date
EP1202840A1 EP1202840A1 (de) 2002-05-08
EP1202840B1 true EP1202840B1 (de) 2003-03-19

Family

ID=7915405

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00938558A Expired - Lifetime EP1202840B1 (de) 1999-07-20 2000-05-16 Bohr- oder schlaghammer

Country Status (6)

Country Link
US (1) US6675908B1 (ja)
EP (1) EP1202840B1 (ja)
JP (1) JP2003505257A (ja)
CN (1) CN1247365C (ja)
DE (2) DE19933972A1 (ja)
WO (1) WO2001005558A1 (ja)

Families Citing this family (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10122820A1 (de) * 2001-05-11 2002-11-21 Bosch Gmbh Robert Handwerkzeugmaschine
DE10261030A1 (de) * 2002-12-24 2004-07-08 Robert Bosch Gmbh Bohrhammer
EP1606082B1 (en) * 2003-03-21 2010-05-05 BLACK & DECKER INC. Power tool with vibration reduction means
DE10362025B4 (de) * 2003-05-20 2006-02-09 Robert Bosch Gmbh Bohr- oder Schlaghammer
DE10323606B4 (de) * 2003-05-20 2005-04-14 Robert Bosch Gmbh Elastische Döpperführung
DE10357962B3 (de) 2003-12-11 2005-09-08 Hilti Ag Bohrhammer
JP4179159B2 (ja) * 2003-12-18 2008-11-12 日立工機株式会社 打撃工具
DE10359572A1 (de) * 2003-12-18 2005-07-28 Robert Bosch Gmbh Schlagwerk für eine repetierend schlagende Handwerkzeugmaschine
DE102004025951A1 (de) * 2004-05-27 2005-12-22 Robert Bosch Gmbh Handwerkzeugmaschine, insbesondere Bohr- und/oder Schlaghammer
DE102004047470A1 (de) * 2004-09-30 2006-04-06 Robert Bosch Gmbh Handwerkzeugmaschine, insbesondere Bohr- und/oder Schlaghammer
TWI279298B (en) * 2004-11-24 2007-04-21 Hitachi Koki Kk Hammer drill
EP1674213B1 (en) * 2004-12-23 2008-10-01 BLACK & DECKER INC. Power tool cooling
ATE396838T1 (de) * 2004-12-23 2008-06-15 Black & Decker Inc Kraftwerkzeuggehäuse
DE602005007167D1 (de) * 2004-12-23 2008-07-10 Black & Decker Inc Kraftwerkzeuggehäuse
DE102005019710A1 (de) * 2005-04-28 2006-11-09 Robert Bosch Gmbh Handwerkzeugmaschinenschlagwerkeinheit
DE102005019711A1 (de) * 2005-04-28 2006-11-09 Robert Bosch Gmbh Handwerkzeugmaschinenschlagwerkeinheit
JP4509894B2 (ja) * 2005-08-29 2010-07-21 株式会社マキタ 衝撃式作業工具
JP4509890B2 (ja) * 2005-08-19 2010-07-21 株式会社マキタ 衝撃式作業工具
US7383895B2 (en) 2005-08-19 2008-06-10 Makita Corporation Impact power tool
ATE454248T1 (de) * 2005-11-16 2010-01-15 Metabowerke Gmbh Motorisch angetriebener bohrhammer
DE102005000179A1 (de) * 2005-12-07 2007-06-14 Hilti Ag Hammerschlaggerät
JP4686372B2 (ja) * 2006-02-01 2011-05-25 株式会社マキタ 衝撃式作業工具
DE102006000395A1 (de) * 2006-08-07 2008-02-14 Hilti Ag Handwerkzeugmaschine mit pneumatischem Schlagwerk
JP4664253B2 (ja) * 2006-08-24 2011-04-06 株式会社マキタ 打撃工具
US7878265B2 (en) * 2007-02-06 2011-02-01 Makita Corporation Impact power tool
JP4815362B2 (ja) * 2007-02-06 2011-11-16 株式会社マキタ 衝撃式作業工具
DE102007000131A1 (de) * 2007-03-07 2008-09-11 Hilti Ag Handwerkzeugmaschine mit pneumatischem Schlagwerk
US8485274B2 (en) * 2007-05-14 2013-07-16 Makita Corporation Impact tool
CL2008002367A1 (es) * 2007-08-13 2009-01-02 Russell Mineral Equipment Pty Ltd Martillo sin retroimpacto accionado neumaticamente que comprende una primera carcasa, una cabeza de cincel y un mecanismo de piston dispuesto en un tubo, con medios de ingreso de aire a baja presion y medios de ingreso de aire a alta presion que permiten el movimiento del piston.
JP5100272B2 (ja) * 2007-09-13 2012-12-19 株式会社マキタ 打撃工具
DE102007048887B4 (de) * 2007-10-11 2017-10-26 Andreas Stihl Ag & Co. Kg Handgeführtes Arbeitsgerät
US7681658B2 (en) * 2007-11-06 2010-03-23 Maurice DUVAL Pneumatic impact tool
JP5202997B2 (ja) * 2008-03-05 2013-06-05 株式会社マキタ 作業工具
DE102008022454B4 (de) * 2008-05-08 2014-06-26 Aeg Electric Tools Gmbh Bohrhammer
JP5234414B2 (ja) * 2008-08-19 2013-07-10 日立工機株式会社 打撃工具
DE102009050014B4 (de) * 2009-10-21 2013-07-11 Metabowerke Gmbh Motorisch angetriebenes Werkzeuggerät mit Bohrhammerbetriebsart
DE102009046479A1 (de) * 2009-11-06 2011-05-19 Hilti Aktiengesellschaft Handwerkzeugmaschine
CN101787852B (zh) * 2010-02-04 2012-10-31 冯静 以锤击作为动力的冲击钻及其使用方法
DE102011007433A1 (de) * 2010-04-20 2011-12-08 Robert Bosch Gmbh Handwerkzeugmaschinenvorrichtung
SE534815C2 (sv) * 2010-05-03 2012-01-10 Atlas Copco Rock Drills Ab Bergborrmaskin med dämpkolv
TW201206656A (en) * 2010-08-06 2012-02-16 Top Gearbox Industry Co Ltd Device incapable of generating vibration while reversely rotated
DE102010044011A1 (de) * 2010-11-16 2012-05-16 Hilti Aktiengesellschaft Handwerkzeugmaschine
DE102011081617A1 (de) 2011-08-26 2013-02-28 Hilti Aktiengesellschaft Handgehaltene Werkzeugmaschine
US9416593B2 (en) 2012-12-28 2016-08-16 Smith International, Inc. Piston strike face and bit interface for percussion hammer drill
CN103223660B (zh) * 2013-05-15 2015-02-25 长沙矿山研究院有限责任公司 一种销套式液压冲击器
EP2857150A1 (de) * 2013-10-03 2015-04-08 HILTI Aktiengesellschaft Handwerkzeugmaschine
CN110125880B (zh) * 2018-02-09 2021-03-16 苏州宝时得电动工具有限公司 锁定机构及具有该锁定机构的冲击工具
CN110355728B (zh) * 2018-04-11 2023-03-17 株式会社牧田 冲击工具
CN110394769B (zh) * 2018-04-24 2022-03-01 博世电动工具（中国）有限公司 电动工具
EP3822037A1 (de) * 2019-11-15 2021-05-19 Hilti Aktiengesellschaft Schlagwerksanordnung
JP7451184B2 (ja) * 2020-01-20 2024-03-18 株式会社マキタ 打撃工具
CN115175962B (zh) * 2020-03-12 2023-05-30 三菱瓦斯化学株式会社 聚缩醛树脂组合物、挤出成型品和注射成型品

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1896992A (en) * 1930-02-06 1933-02-07 Agren Ernst Malcus Arrangement in striking tools
US2899934A (en) * 1956-01-19 1959-08-18 salengro
US3179185A (en) * 1962-06-14 1965-04-20 Chicago Pneumatic Tool Co Demolition tool with shock attenuating means
GB1152119A (en) * 1966-11-29 1969-05-14 Atlas Copco Ab Improvements in Recoil Vibration Damped Percussive Machine
US3592275A (en) * 1969-04-11 1971-07-13 Acker Drill Co Inc Spring loaded adapter for drill rods and core barrel
CS149009B1 (ja) 1971-02-01 1973-05-24
BE788418A (fr) * 1971-09-08 1973-01-02 Ingersoll Rand Co Macanisme de declenchement d'outil a moteur
US4102410A (en) * 1975-03-19 1978-07-25 Ross Frederick W Resilient work-coupled impact device
DE3826213A1 (de) * 1988-08-02 1990-02-15 Bosch Gmbh Robert Bohr- oder schlaghammer
DE58903355D1 (de) * 1989-01-11 1993-03-04 Sulzer Ag Hydraulischer bohrhammer.
DE4415348A1 (de) * 1994-05-02 1995-11-09 Hilti Ag Bohr- und Meisselgerät
US5626199A (en) * 1995-07-05 1997-05-06 T.C. Service Company Pneumatic impact tool having improved vibration and noise attenuation
US5573075A (en) 1995-07-05 1996-11-12 T.C. Service Company Pneumatic impact tool having improved vibration and noise attenuation
SE510057C2 (sv) * 1997-08-07 1999-04-12 Wiklund Henry & Co Utloppskanal i tryckmediumdriven slagmekanism

Also Published As

Publication number Publication date
DE50001515D1 (de) 2003-04-24
CN1247365C (zh) 2006-03-29
CN1361726A (zh) 2002-07-31
JP2003505257A (ja) 2003-02-12
US6675908B1 (en) 2004-01-13
DE19933972A1 (de) 2001-01-25
EP1202840A1 (de) 2002-05-08
WO2001005558A1 (de) 2001-01-25

Similar Documents

Publication Publication Date Title
EP1202840B1 (de) Bohr- oder schlaghammer
DE19505068C2 (de) Schlagwerkzeug
EP0429475B1 (de) Bohr- oder schlaghammer
DE3837694C2 (de) Schlagwerkzeug
DE10145464C2 (de) Bohr- und/oder Schlaghammer mit anpressdruckabhängiger Leerlaufsteuerung
DE69610952T2 (de) Bohrhammer mit einem Mechanismus zum Verhindern von Leerschlägen
CH693407A5 (de) Bohr- und/oder Schlaghammer.
DE69419657T2 (de) Kraftwerkzeuge und Schlagmechanismus dafür
DE10253421A1 (de) Schlagbohrer
EP2029326A1 (de) Schlagwerk mit einem schlagbolzen und einer zugeordneten fangvorrichtung
DE10333799B3 (de) Hohlkolbenschlagwerk mit Luftausgleichs- und Leerlauföffnung
EP3181301A1 (de) Schlagende handwerkzeugmaschine
EP1996372A1 (de) Werkzeugmaschine und verfahren zum betrieb einer werkzeugmaschine
EP0318480B1 (de) Schlagwerkabschaltung
DE3420788C2 (de) Reversible Vorrichtung mit einer Schlageinrichtung
DE102015011738A1 (de) Schlagwerkzeug
DE2437023A1 (de) Schlag- oder drehschlaghammer
EP0663270A1 (de) Schlag- oder Drehschlaghammer
DE102009046479A1 (de) Handwerkzeugmaschine
DE19950807B4 (de) Schlagwerkzeug mit einem Pufferelement
DE3624153A1 (de) Motorbetriebener hammer
DE102006056848A1 (de) Pneumatisches Schlagwerk einer Handwerkzeugmaschine
WO2002092292A1 (de) Schlag- und/oder bohrhammer mit einer zum freischlagen festgeklemmter gegenstände geeigneten schlagvorrichtung
DE3804026A1 (de) Motorisch angetriebener meissel- oder bohrhammer
DE3239174A1 (de) Schlagwerkzeug

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

17P Request for examination filed

Effective date: 20020220

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 20020528

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): CH DE GB LI

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: NV

Representative=s name: SCINTILLA AG, DIREKTION

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 50001515

Country of ref document: DE

Date of ref document: 20030424

Kind code of ref document: P

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

26N No opposition filed

Effective date: 20031222

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

Ref country code: GB

Payment date: 20110523

Year of fee payment: 12

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20120516

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 NON-PAYMENT OF DUE FEES

Effective date: 20120516

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

Ref country code: CH

Payment date: 20130522

Year of fee payment: 14

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

Ref country code: DE

Payment date: 20130723

Year of fee payment: 14

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50001515

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: CH

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

Effective date: 20140531

Ref country code: LI

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

Effective date: 20140531

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50001515

Country of ref document: DE

Effective date: 20141202

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

Ref country code: DE

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

Effective date: 20141202