EP1431005A2 - Outil à main électrique à percussion - Google Patents

Outil à main électrique à percussion Download PDF

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Publication number
EP1431005A2
EP1431005A2 EP03104752A EP03104752A EP1431005A2 EP 1431005 A2 EP1431005 A2 EP 1431005A2 EP 03104752 A EP03104752 A EP 03104752A EP 03104752 A EP03104752 A EP 03104752A EP 1431005 A2 EP1431005 A2 EP 1431005A2
Authority
EP
European Patent Office
Prior art keywords
striking
machine tool
electric hand
hand machine
axis
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
EP03104752A
Other languages
German (de)
English (en)
Other versions
EP1431005A3 (fr
EP1431005B1 (fr
Inventor
Holger Cecchin
Christian Daubner
Hubert Daxenberger
David Hruza
Christoph Josef Kink
Ferdinand Kristen
Erwin Manschitz
Hans-Jürgen Horst Georg Pfisterer
Walter Wissmach
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 EP1431005A2 publication Critical patent/EP1431005A2/fr
Publication of EP1431005A3 publication Critical patent/EP1431005A3/fr
Application granted granted Critical
Publication of EP1431005B1 publication Critical patent/EP1431005B1/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
    • 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
    • B25D2211/00—Details of portable percussive tools with electromotor or other motor drive
    • B25D2211/003—Crossed drill and motor spindles

Definitions

  • the invention describes an at least partially striking Electric hand machine tool such as a combination hammer or chisel hammer.
  • the technical effort in this regard is passive damping or active regulated vibration suppression increases with the complexity of the compensated Self-excitation.
  • a chisel hammer has one on it, directly to the eccentric of the striking mechanism assembly, the rotor axis is freely cantilevered Reluctance motor, which is thus arranged completely on one side of the flapping axis.
  • the center of gravity thus offset from the striking axis to the reluctance motor the interaction with the workpiece and the hand-arm system of the user Bending moments and this ultimately leads to complex, non-axial vibrations.
  • a reluctance motor directly connected to the eccentric necessarily slow rotating, which makes this a high mass / power ratio for reluctance motors having.
  • a chisel hammer with a striking mechanism assembly has a radial one to the stroke axis largely symmetrical mass distribution by the Percussion mechanism gear to a part of the engine diametrically with respect to the striking axis is arranged.
  • the space requirement of the engine in the core area of the flapping axis is conditional constructively a large axial distance from the eccentric, which excites bending moments become.
  • the object of the invention is to realize an at least partially beating electric hand machine tool with largely analytically simple excitation.
  • the core area of the flapping axis is only penetrated by the rotor shaft, which in addition to a largely symmetrical mass distribution of the electric motor radially to the impact axis is arranged close to the eccentric and thus less bending moments are excited.
  • the rotor shaft is advantageously directly adjacent to a crankshaft of the eccentric arranged by an eccentric pinion as part of the striking mechanism gear directly with the Motor pinion meshes on the rotor shaft, which means that their distance is only through both pinion radii is determined.
  • the eccentric pinion is advantageous as an external pinion of the crankshaft or alternatively as Internal pinion formed a hollow crankshaft, which makes the distance by the sum or the difference of the pinion radii is determined.
  • the electric motor is advantageously mounted on two bearing points via the rotor shaft in the hammer mechanism gearbox, further advantageous in a gearbox housing and in one Bearing cap, optionally made of lightweight die-cast aluminum, which enables precise guidance of the meshing motor pinion is achieved.
  • the rotor laminated core is advantageously designed so that it projects freely there is no bearing on the sheet metal package side, which means that the engine's center of gravity is closer is shifted to the flapping axis.
  • a low-mass fan wheel on the front end remote from the sheet metal package is advantageous the rotor shaft arranged, whereby no space close to the axis is required.
  • the missing bearing point also simplifies the design of an engine housing.
  • the electric motor is advantageous as a brushless motor, further advantageous as a reluctance motor trained, whereby a high power / mass ratio can be realized.
  • the striking mechanism assembly and the electric motor advantageously have a common one Focus on the stroke axis, which leads to analytically simple excitations.
  • a striking along a striking axis A has Electric hand machine tool 1 with an electric motor 2 designed as a reluctance motor a rotor shaft 3 arranged transversely to the impact axis A with a rotor laminated core 4 and a motor pinion 5.
  • a striking mechanism assembly 6 with an eccentric 7 is over a Impact mechanism gear 8 meshed driven by the motor pinion 5.
  • the rotor core 4 is completely diametrical to the striking mechanism gear 8 with respect to the striking axis A. arranged.
  • the rotor shaft 3 is immediately adjacent to a crankshaft 9 of the Eccentric 7 arranged by an outer eccentric pinion 10 as part of the Impact mechanism gear 8 meshes directly with the motor pinion 5 on the rotor shaft 3.
  • the electric motor 2 is mounted on the rotor shaft 3 at two bearing points 11a, 11b in Impact mechanism gear 8 made of light aluminum die-cast, bearing 11a in a gear housing 12 and the bearing 11 b is arranged in a bearing cover 13.
  • the rotor shaft 3 is designed with the rotor lamination stack 4 to project freely and on the End of the rotor shaft 3 remote from the sheet-metal package is a low-mass fan wheel 14 arranged.
  • the striking mechanism gear 8 is 90% diametrical with respect to the striking axis A. arranged to the electric motor 2, whereby the common center of gravity S the Percussion mechanism assembly 8 and the electric motor 2 lies on the striking axis A.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
EP03104752A 2002-12-19 2003-12-17 Outil à main électrique à percussion Expired - Lifetime EP1431005B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10259566 2002-12-19
DE10259566A DE10259566A1 (de) 2002-12-19 2002-12-19 Schlagende Elektrohandwerkzeugmaschine

Publications (3)

Publication Number Publication Date
EP1431005A2 true EP1431005A2 (fr) 2004-06-23
EP1431005A3 EP1431005A3 (fr) 2009-07-01
EP1431005B1 EP1431005B1 (fr) 2013-03-06

Family

ID=32336474

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03104752A Expired - Lifetime EP1431005B1 (fr) 2002-12-19 2003-12-17 Outil à main électrique à percussion

Country Status (6)

Country Link
US (1) US7048076B2 (fr)
EP (1) EP1431005B1 (fr)
JP (1) JP4648624B2 (fr)
CN (1) CN100341669C (fr)
DE (1) DE10259566A1 (fr)
PL (1) PL204879B1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007077052A1 (fr) * 2005-12-29 2007-07-12 Robert Bosch Gmbh Outil manuel motorise, en particulier marteau-foreur et/ou marteau-piqueur
EP3670095A1 (fr) * 2018-12-20 2020-06-24 Hilti Aktiengesellschaft Machine-outil portative
EP4324597A1 (fr) 2022-08-18 2024-02-21 Hilti Aktiengesellschaft Marteau perforateur ou burineur avec une unité de percussion à vibrations réduites

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005017482B4 (de) * 2005-04-15 2007-05-03 Compact Dynamics Gmbh Gaswechselventilaktor für einen ventilgesteuerten Verbrennungsmotor
DE102005017481B4 (de) * 2005-04-15 2007-08-30 Compact Dynamics Gmbh Linearaktor
DE102005017483B4 (de) * 2005-04-15 2007-04-05 Compact Dynamics Gmbh Linearaktor in einem Elektro-Schlagwerkzeug
DE102005061399A1 (de) 2005-12-22 2007-07-05 Robert Bosch Gmbh Handwerkzeugmaschine, insbesondere Bohr- und/oder Meißelhammer
GB2433716A (en) * 2005-12-29 2007-07-04 Bosch Gmbh Robert Hammer drill and/or hammer chisel with bevel gear
DE102006005852A1 (de) * 2006-02-09 2007-08-23 Robert Bosch Gmbh Handwerkzeugmaschine, insbesondere Bohr- und/oder Meißelhammer
GB2431610A (en) * 2006-03-03 2007-05-02 Black & Decker Inc Handle Damping System
DE102006035975A1 (de) * 2006-08-02 2008-02-07 Robert Bosch Gmbh Elektrowerkzeugmaschine
JP5574156B2 (ja) * 2010-03-05 2014-08-20 日立工機株式会社 ボルト締付機
DE102011082093A1 (de) * 2011-09-02 2013-03-07 Robert Bosch Gmbh Handgriffvorrichtung für eine Handwerkzeugmaschine
DE102013202248A1 (de) * 2012-05-29 2013-12-05 Robert Bosch Gmbh Werkzeugvorrichtung
CN104084934A (zh) * 2014-07-03 2014-10-08 长沙启科电子有限公司 一种新型智能控制直流无刷电镐
WO2019079560A1 (fr) 2017-10-20 2019-04-25 Milwaukee Electric Tool Corporation Outil à percussion
CN214723936U (zh) 2018-01-26 2021-11-16 米沃奇电动工具公司 冲击工具
EP3901498A1 (fr) * 2020-04-21 2021-10-27 Hilti Aktiengesellschaft Mécanisme de percussion électropneumatique

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE736794C (de) 1935-04-14 1943-06-28 Siemens Ag Schlagwerkzeug mit Kurbeltrieb
EP0107628A1 (fr) 1982-09-22 1984-05-02 Institut Cerac S.A. Marteau portatif
EP1238759A1 (fr) 2001-03-07 2002-09-11 Black & Decker Inc. Marteau

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1938660C3 (de) * 1969-07-30 1975-05-15 Metabowerke Kg, Closs, Rauch & Schnizler, 7440 Nuertingen Schlagbohrhammer
US3718193A (en) * 1971-02-18 1973-02-27 Bosch Gmbh Robert Cooling system for portable impulse transmitting machines
US3921729A (en) * 1971-11-25 1975-11-25 Hilti Ag Electropneumatic hammer
DE2516406C3 (de) * 1975-04-15 1981-11-19 Robert Bosch Gmbh, 7000 Stuttgart Bohrhammer
ATE4530T1 (de) * 1979-08-31 1983-09-15 Black & Decker Inc. Tragbares werkzeug, z.b. rotierender hammer oder dgl.
US4462467A (en) * 1981-11-09 1984-07-31 Hilti Aktiengesellschaft Percussion drill machine
SE443940B (sv) * 1982-09-22 1986-03-17 Atlas Copco Ab Slagverktyg drivet av utbytbar motordel
DE3311422A1 (de) * 1983-03-29 1984-10-04 Hilti Ag, Schaan Elektromotorisch betriebenes handgeraet
JPS60108280A (ja) * 1983-11-18 1985-06-13 三菱電機株式会社 電動打撃装置
JPS62192881U (fr) * 1986-05-29 1987-12-08
DE19832946A1 (de) * 1998-07-22 2000-01-27 Hilti Ag Handbohrgerät mit drucklufterregtem Schlagwerk
DE10033362A1 (de) * 2000-07-08 2002-01-17 Hilti Ag Elektrohandwerkzeug mit Leerschlagabschaltung
DE10059747A1 (de) * 2000-12-01 2002-06-06 Hilti Ag Elektrohandwerkzeug mit Sicherheitskupplung
DE10117123A1 (de) * 2001-04-06 2002-10-17 Bosch Gmbh Robert Handwerkzeugmaschine
DE10254813A1 (de) * 2002-11-23 2004-06-03 Hilti Ag Elektrohandwerkzeugmaschine mit schwingungsentkoppelter Schlagwerksbaugruppe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE736794C (de) 1935-04-14 1943-06-28 Siemens Ag Schlagwerkzeug mit Kurbeltrieb
EP0107628A1 (fr) 1982-09-22 1984-05-02 Institut Cerac S.A. Marteau portatif
EP1238759A1 (fr) 2001-03-07 2002-09-11 Black & Decker Inc. Marteau

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007077052A1 (fr) * 2005-12-29 2007-07-12 Robert Bosch Gmbh Outil manuel motorise, en particulier marteau-foreur et/ou marteau-piqueur
EP3670095A1 (fr) * 2018-12-20 2020-06-24 Hilti Aktiengesellschaft Machine-outil portative
WO2020126089A1 (fr) * 2018-12-20 2020-06-25 Hilti Aktiengesellschaft Machine-outil portative
US11364611B2 (en) 2018-12-20 2022-06-21 Hilti Aktiengesellschaft Hand-held power tool
EP4324597A1 (fr) 2022-08-18 2024-02-21 Hilti Aktiengesellschaft Marteau perforateur ou burineur avec une unité de percussion à vibrations réduites
WO2024037881A1 (fr) 2022-08-18 2024-02-22 Hilti Aktiengesellschaft Marteau perforateur ou marteau burineur doté d'une unité de mécanisme de marteau à vibrations réduites

Also Published As

Publication number Publication date
PL364131A1 (en) 2004-06-28
EP1431005A3 (fr) 2009-07-01
CN100341669C (zh) 2007-10-10
JP4648624B2 (ja) 2011-03-09
CN1507988A (zh) 2004-06-30
EP1431005B1 (fr) 2013-03-06
US20040182589A1 (en) 2004-09-23
DE10259566A1 (de) 2004-07-01
US7048076B2 (en) 2006-05-23
JP2004195648A (ja) 2004-07-15
PL204879B1 (pl) 2010-02-26

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