EP1151827B1 - Hand tool with electrical percussion system - Google Patents
Hand tool with electrical percussion system Download PDFInfo
- Publication number
- EP1151827B1 EP1151827B1 EP01810391A EP01810391A EP1151827B1 EP 1151827 B1 EP1151827 B1 EP 1151827B1 EP 01810391 A EP01810391 A EP 01810391A EP 01810391 A EP01810391 A EP 01810391A EP 1151827 B1 EP1151827 B1 EP 1151827B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hand tool
- electric hand
- unit
- tool according
- rotor
- 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
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/24—Damping the reaction force
-
- 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
- B25D2211/006—Parallel drill and motor spindles
-
- 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
- B25D2250/121—Housing details
-
- 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
Definitions
- the invention refers to an at least partially striking electric hand tool device, for example a hammer drill or a chisel hammer, preferably with a pneumatic impact mechanism.
- the rotational movement of an electric drive is at least partially transformed by means of suitable transformation gear, usually eccentric or wobble, in a reciprocating motion of the exciter piston.
- damping of this recoil energy by a relative movement of two modules with the interposition of a damping element depends in principle on the dissipative portion of the deformation energy of the damping element and in particular increases both with the deformation force amplitude and with the Deformationswegamplitude.
- an electric hand tool device for producing an at least striking movement of a tool has a housing, with a percussion mechanism and an electric drive with a rotatable rotor with a rotor axis oriented parallel to the tool axis. Both the impact mechanism and the electric drive form one and the same assembly within the housing.
- the object of the invention is to further minimize the vibrations in beating electric hand tool devices.
- Another aspect of this invention is the realization of a low-wear drive chain between two relatively movable, vibration-decoupled modules of the electric hand tool device
- one, along the tool axis limited axially movable, first assembly in addition to the percussion includes a rotatable parallel to the vibration of the first assembly rotor axis, rotor of the electric drive and advantageously a transformation gear.
- the vibration decoupled second assembly includes the stator of the electric drive and the housing.
- the mass ratio of both modules is shifted toward a relatively larger mass of the first assembly, including in the direction of a mass equality of both modules.
- more recoil energy can be dissipated by a damping element arranged between the two assemblies, whereby the vibration amplitude of the second assembly with the housing is reduced.
- damping elements made of viscoelastic material are used, which dissipate a lot of energy at the vibration frequency in the working temperature range of the electric hand tool.
- the drive chain for the impact generation and / or rotational movement of the electric hand tool has a low-wear coupling means with respect to the relative movement, which is formed as a torque-locking coupling by a magnetic rotating field of the stator to an axially movable, brushless rotor.
- a low-wear coupling means with respect to the relative movement, which is formed as a torque-locking coupling by a magnetic rotating field of the stator to an axially movable, brushless rotor.
- a striking electric hand tool device 1 has a bearing, eg sliding or roller bearing, bounded along a tool axis A, for example. 10 mm, movable first assembly with a percussion mechanism 2, which one, a reciprocating motion exporting, excitation piston 3, with a transformation gear 4, which includes an eccentric and two orthogonally intermeshing bevel gears, and with a parallel to the first vibration I of the first assembly about a rotor axis B rotatable and along this axially displaceable axially, brushless rotor 5 of an electric drive and a second Assembly with the second vibration II, which includes a housing 6, a stator 7 of the electric drive and the associated Elektroantriebselektronik 8 and relative to the first assembly via a prestressed elastic spring 9, for example.
- a helical compression spring, with a parallel thereto damping element 10 made of viscoelastic Material bezü like vibration I, II is vibration decoupled.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
Description
Die Erfindung bezeichnet ein zumindest teilweise schlagendes Elektrohandwerkzeuggerät, bspw. einen Bohrhammer oder einen Meisselhammer, mit vorzugsweise einem pneumatischen Schlagwerk.The invention refers to an at least partially striking electric hand tool device, for example a hammer drill or a chisel hammer, preferably with a pneumatic impact mechanism.
Elektrohandwerkzeuggeräte mit pneumatischem Schlagwerk benutzen zur Erzeugung des Schlages eine hin- und hergehende schwingende Bewegung, welche auf eine Gasfeder zwischen einem in einem Hohlzylinder dichtend relativ zu diesem beweglichen Erregerkolben und einem distanzierten in Richtung der Werkzeugachse dichtend beweglichen Schlagmittel aufgebracht wird. Dazu wird die Drehbewegung eines Elektroantriebs zumindest teilweise mittels geeigneter Transformationsgetriebe, meist Exzenter- oder Taumelschwinger, in eine Hin- und Herbewegung des Erregerkolbens transformiert. Bei zweckentsprechender Benutzung wirkt im Kraftweg die in Werkzeugrichtung axiale Gegenkraft als Rückstoss des Schlages über das Werkzeug, das Schlagwerk, das Transformationsgetriebe und dessen Lagerung auf das Gehäuse und verursacht störende Vibrationen bei dem, die Kraft aufbringenden, Benutzer.Electric hand tool devices with pneumatic percussion use to generate the shock a reciprocating oscillating motion, which is applied to a gas spring between a hollow cylinder in a sealing relative to this movable exciter piston and a distanced in the direction of the tool axis sealingly movable impact means. For this purpose, the rotational movement of an electric drive is at least partially transformed by means of suitable transformation gear, usually eccentric or wobble, in a reciprocating motion of the exciter piston. When appropriate use acts in the force path in the tool axial axial force as recoil of the blow on the tool, the percussion mechanism, the transformation gear and its storage on the housing and causes disturbing vibrations in the, the force applying, users.
Es ist aus der Physik der erzwungenen Amplitudenschwingungen eines Federpendels prinzipiell bekannt, dass besonders hohe Vibrationsamplituden im mechanischen Resonanzfall auftreten bzw. umgekehrt die Vibrationsamplituden durch weit auseinander liegende Eigen- und Vibrationsfrequenzen wirkungsvoll gedämpft werden können. In die Eigenfrequenz eines Federpendels geht die Schwingmasse und die Federkonstante ein, welche im Nutzungsfall bei einem einfachen schlagenden Elektrohandwerkzeuggerät durch dessen Masse und die Federkonstante des Nutzers bei der Handhabung ausgebildet wird. Abhängig von der Schlagzahl als Vibrationsfrequenz stellt sich demnach eine bestimmte Vibrationsamplitude des Elektrohandwerkzeuggeräts ein.It is known in principle from the physics of the forced amplitude oscillations of a spring pendulum that particularly high vibration amplitudes occur in the mechanical resonance case or vice versa, the vibration amplitudes can be effectively damped by widely spaced natural and vibrational frequencies. In the natural frequency of a spring pendulum is the oscillating mass and the spring constant, which is formed in the case of use in a simple beating electric hand tool by its mass and the spring constant of the user in handling. Depending on the number of strokes as the vibration frequency, a certain vibration amplitude of the electric hand tool device thus arises.
Nach der
Die Dämpfung dieser Rückstossenergie durch eine Relativbewegung zweier Baugruppen unter Zwischenschaltung eines Dämpfungselements hängt prinzipiell von dem dissipativen Anteil der Deformationsenergie des Dämpfungselementes ab und steigt insbesondere sowohl mit der Deformationskraftamplitude als auch mit der Deformationswegamplitude.The damping of this recoil energy by a relative movement of two modules with the interposition of a damping element depends in principle on the dissipative portion of the deformation energy of the damping element and in particular increases both with the deformation force amplitude and with the Deformationswegamplitude.
Nach der
Nach der
Die Aufgabe der Erfindung besteht in der weiteren Minimierung der Vibrationen bei schlagenden Elektrohandwerkzeuggeräten. Ein weiterer Aspekt dieser Erfindung besteht in der Realisierung einer verschleissarmen Antriebskette zwischen zwei relativ zueinander beweglichen, schwingungsentkoppelten Baugruppen des ElektrohandwerkzeuggerätesThe object of the invention is to further minimize the vibrations in beating electric hand tool devices. Another aspect of this invention is the realization of a low-wear drive chain between two relatively movable, vibration-decoupled modules of the electric hand tool device
Die Aufgabe wird im wesentlichen durch die Merkmale der unabhängigen Ansprüche gelöst. Vorteilhafte Weiterbildungen ergeben sich aus den Unteransprüchen.The object is essentially achieved by the features of the independent claims. Advantageous developments emerge from the subclaims.
Im wesentlichen beinhaltet eine, längs der Werkzeugachse begrenzt axial bewegliche, erste Baugruppe neben dem Schlagwerk einen, um eine parallel zur Vibration der ersten Baugruppe orientierten Rotorachse drehbaren, Rotor des Elektroantriebs sowie vorteilhaft ein Transformationsgetriebe. Die schwingungsentkoppelte zweite Baugruppe beinhaltet den Stator des Elektroantriebs und das Gehäuse.Essentially, one, along the tool axis limited axially movable, first assembly in addition to the percussion includes a rotatable parallel to the vibration of the first assembly rotor axis, rotor of the electric drive and advantageously a transformation gear. The vibration decoupled second assembly includes the stator of the electric drive and the housing.
Dadurch vergrössert sich die schwingungstechnisch zu beachtende Masse der ersten Baugruppe, welche die Masse des Schlagwerks, des Transformationsgetriebes und des Rotors addiert, relativ zur grösseren Masse der zweiten Baugruppe, welche die Masse des Stators und des Gehäuses sowie optional die Masse der Elektroantriebselektronik addiert. Durch die nunmehr absolut höhere Masse der ersten Baugruppe reduziert sich die durch die gleiche Rückstossenergie erzeugte Vibrationsamplitude der ersten Baugruppe.This increases the mass of the first assembly to be considered in terms of vibration, which adds the mass of the impact mechanism, the transformation gear and the rotor, relative to the larger mass of the second assembly, which adds the mass of the stator and the housing and optionally the mass of the electric drive electronics. Due to the now absolutely higher mass of the first assembly reduces the vibration amplitude of the first assembly generated by the same recoil energy.
Zudem wird das Massenverhältnis beider Baugruppen in Richtung zu einer relativ grösseren Masse der ersten Baugruppe verschoben, einschliesslich in Richtung auf eine Massengleichheit beider Baugruppen. Somit kann durch ein zwischen beiden Baugruppen angeordnetes Dämpfungselement mehr Rückstossenergie dissipiert werden, wodurch die Vibrationsamplitude der zweiten Baugruppe mit dem Gehäuse vermindert wird.In addition, the mass ratio of both modules is shifted toward a relatively larger mass of the first assembly, including in the direction of a mass equality of both modules. Thus, more recoil energy can be dissipated by a damping element arranged between the two assemblies, whereby the vibration amplitude of the second assembly with the housing is reduced.
Vorteilhaft werden Dämpfungselemente aus viscoelastischem Material verwendet, welches bei der Vibrationsfrequenz im Arbeitstemperaturbereich des Elektrohandwerkzeugs viel Energie dissipieren.Advantageously, damping elements made of viscoelastic material are used, which dissipate a lot of energy at the vibration frequency in the working temperature range of the electric hand tool.
Die Antriebskette für die Schlagerzeugung und/oder Drehbewegung des Elektrohandwerkzeugs weist ein verschleissarmes Kupplungsmittel bezüglich der Relativbewegung auf, welche als drehmomentschlüssige Kupplung durch ein magnetisches Drehfeld des Stators auf einen axial beweglichen, kollektorlosen Rotor ausgebildet wird. Insbesondere werden keine mechanischen kraftübertragenden, und somit verschleissanfälligen, Kupplungsmittel zum Ausgleich der Relativbewegung zwischen beiden Baugruppen benötigt. Bei einem kollektorlosen Rotor entfallen zudem die bei einer axialen Bewegung verschleissenden Kollektoren.The drive chain for the impact generation and / or rotational movement of the electric hand tool has a low-wear coupling means with respect to the relative movement, which is formed as a torque-locking coupling by a magnetic rotating field of the stator to an axially movable, brushless rotor. In particular, no mechanical force-transmitting, and thus wear-prone, coupling means to compensate for the relative movement between the two assemblies are needed. With a brushless rotor, the collectors which wear during an axial movement are also eliminated.
Die Erfindung wird bezüglich eines vorteilhaften Ausführungsbeispiels näher erläutert mit:
- Fig. 1 als schlagendes Elektrohandwerkzeuggerät.
- Fig. 1 as a beating electric hand tool.
Nach Fig. 1 weist ein schlagendes Elektrohandwerkzeuggerät 1 eine über Lagerungen, bspw. Gleit- oder Wälzlager, längs einer Werkzeugachse A begrenzt, bspw. 10 mm, bewegliche erste Baugruppe mit einem Schlagwerk 2, welches einen, eine Hin- und Herbewegung ausführenden, Erregerkolben 3 beinhaltet, mit einem Transformationsgetriebe 4, welches einen Exzenter und zwei rechtwinkelig ineinandergreifende Kegelräder beinhaltet, und mit einem, parallel zur ersten Vibration I der ersten Baugruppe um eine Rotorachse B drehbaren und längs dieser begrenzt axial verschiebbaren, kollektorlosen Rotor 5 eines Elektroantriebs sowie eine zweite Baugruppe mit der zweiten Vibration II auf, welche ein Gehäuse 6, einen Stator 7 des Elektroantriebs und die zugeordnete Elektroantriebselektronik 8 beinhaltet und relativ zur ersten Baugruppe über eine vorgespannte elastische Feder 9, bspw. eine Spiraldruckfeder, mit einem dazu parallel geschalteten Dämpfungselement 10 aus viscoelastischem Material bezüglich der Vibrationen I, II schwingungsentkoppelt ist.According to FIG. 1, a striking electric
Claims (9)
- Electric hand tool for producing at least one striking movement of a tool along a tool axis (A) with a striking mechanism (2) arranged inside a housing (6) and an electric drive with a stator (7) and a rotating rotor (5) with a rotor axis (B) directed parallel to the tool axis (A), characterised in that a first unit containing the striking mechanism (2) and the rotor (5) is supported so that it can move in a limited way in a second unit, which is decoupled from vibrations and has the housing (6) and the stator (7).
- Electric hand tool according to claim 1, characterised in that the first unit has a transformation gear.
- Electric hand tool according to claim 1 or claim 2, characterised in that the second unit has electric drive electronics (8).
- Electric hand tool according to one of the previous claims, characterised in that the rotor (5) is made without collector.
- Electric hand tool according to one of the previous claims, characterised in that the mass of the first unit and the mass of the second unit are essentially the same size.
- Electric hand tool according to one of the previous claims, characterised in that the first unit is connected to the second unit through a flexible spring (9) so as to be decoupled from vibrations.
- Electric hand tool according to claim 6, characterised in that the spring (9) has an attenuating element (10) connected to it in parallel.
- Electric hand tool according to claim 7, characterised in that the attenuating element (10) consists of a viscoelastic material.
- Electric hand tool according to claim 8, characterised in that the viscoelastic material has optimum energy dissipation at the vibration frequency at the working temperature of the electric hand tool (1).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10021355A DE10021355B4 (en) | 2000-05-02 | 2000-05-02 | Beating electric hand tool with vibration-decoupled assemblies |
DE10021355 | 2000-05-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1151827A1 EP1151827A1 (en) | 2001-11-07 |
EP1151827B1 true EP1151827B1 (en) | 2007-07-25 |
Family
ID=7640535
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01810391A Expired - Lifetime EP1151827B1 (en) | 2000-05-02 | 2001-04-23 | Hand tool with electrical percussion system |
Country Status (5)
Country | Link |
---|---|
US (1) | US6902012B2 (en) |
EP (1) | EP1151827B1 (en) |
JP (1) | JP4778630B2 (en) |
CN (1) | CN100439043C (en) |
DE (2) | DE10021355B4 (en) |
Families Citing this family (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3680941B2 (en) * | 2002-01-18 | 2005-08-10 | マックス株式会社 | Concrete drill |
DE602004026134D1 (en) * | 2003-04-01 | 2010-05-06 | Makita Corp | power tool |
DE10358033B4 (en) * | 2003-12-11 | 2007-05-03 | Hilti Ag | drive arrangement |
US7604071B2 (en) * | 2004-04-30 | 2009-10-20 | Makita Corporation | Power tool with vibration reducing means |
EP1674213B1 (en) * | 2004-12-23 | 2008-10-01 | BLACK & DECKER INC. | Power tool cooling |
DE602005007166D1 (en) * | 2004-12-23 | 2008-07-10 | Black & Decker Inc | Power tool housings |
ATE396841T1 (en) * | 2004-12-23 | 2008-06-15 | Black & Decker Inc | POWER TOOL HOUSING |
JP4742613B2 (en) * | 2005-02-24 | 2011-08-10 | マックス株式会社 | Drill tool |
EP1787761B1 (en) * | 2005-11-16 | 2010-01-06 | Metabowerke GmbH | Motor-driven hammer drill |
US7493682B2 (en) * | 2006-04-04 | 2009-02-24 | Richardson Thomas W | Apparatus and system for installing rivets in belt fasteners |
DE102006000253A1 (en) * | 2006-05-30 | 2007-12-06 | Hilti Ag | Striking hand tool with axially movable percussion |
DE102006053105A1 (en) * | 2006-11-10 | 2008-05-15 | Robert Bosch Gmbh | Hand tools percussion device |
JP2008183633A (en) * | 2007-01-26 | 2008-08-14 | Makita Corp | Hammer drill |
DE102010025586B4 (en) * | 2009-07-01 | 2021-04-15 | Johnson Electric International AG | Power tool |
JP5574156B2 (en) * | 2010-03-05 | 2014-08-20 | 日立工機株式会社 | Bolt tightening machine |
DE102011007433A1 (en) * | 2010-04-20 | 2011-12-08 | Robert Bosch Gmbh | Hand machine tool device |
JP5534562B2 (en) | 2010-07-14 | 2014-07-02 | 日立工機株式会社 | Electric tool |
DE102010063619A1 (en) * | 2010-12-21 | 2012-06-21 | Robert Bosch Gmbh | Hand tool |
DE102011081617A1 (en) * | 2011-08-26 | 2013-02-28 | Hilti Aktiengesellschaft | Hand-held machine tool |
US10821591B2 (en) | 2012-11-13 | 2020-11-03 | Milwaukee Electric Tool Corporation | High-power cordless, hand-held power tool including a brushless direct current motor |
JP6318603B2 (en) * | 2013-12-20 | 2018-05-09 | 日立工機株式会社 | Impact tool |
JP6501414B2 (en) * | 2014-03-25 | 2019-04-17 | 株式会社マキタ | Impact tool |
US10513022B2 (en) | 2014-11-12 | 2019-12-24 | Makita Corporation | Striking device |
CN104677215A (en) * | 2015-02-10 | 2015-06-03 | 东北大学 | Device for carrying out dredging treatment on plugged blast hole |
KR101650906B1 (en) | 2016-05-12 | 2016-08-24 | 주식회사 가우스 | Single acting driving pile machine |
KR101673542B1 (en) * | 2016-05-12 | 2016-11-09 | 정은경 | Crops harvested Combine driving pile machine |
JP6863704B2 (en) | 2016-10-07 | 2021-04-21 | 株式会社マキタ | Strike tool |
US10875168B2 (en) | 2016-10-07 | 2020-12-29 | Makita Corporation | Power tool |
CN213259295U (en) | 2017-10-20 | 2021-05-25 | 米沃奇电动工具公司 | Impact tool for performing cutting operations on a workpiece by means of a chisel |
US11059155B2 (en) | 2018-01-26 | 2021-07-13 | Milwaukee Electric Tool Corporation | Percussion tool |
CN108544431B (en) * | 2018-04-08 | 2020-12-15 | 惠安县螺阳邓先鹏建筑物清洁服务中心 | Impact type rotating speed adjustable drilling machine |
CN108543990B (en) * | 2018-04-08 | 2019-09-27 | 泰州市晨虹数控设备制造有限公司 | A kind of adjustable drilling machine of revolving speed |
JP6626944B2 (en) * | 2018-09-11 | 2019-12-25 | 株式会社マキタ | Electric tool |
JP7246202B2 (en) | 2019-02-19 | 2023-03-27 | 株式会社マキタ | Power tool with vibration mechanism |
JP7229807B2 (en) | 2019-02-21 | 2023-02-28 | 株式会社マキタ | Electric tool |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2907239A (en) * | 1957-01-08 | 1959-10-06 | Bosch Gmbh Robert | Rotary impact tool |
US3203490A (en) * | 1963-06-27 | 1965-08-31 | Black & Decker Mfg Co | Compact rotary hammer |
US3305031A (en) * | 1965-02-01 | 1967-02-21 | Ingersoll Rand Co | Power hammer |
SE391666B (en) * | 1973-05-23 | 1977-02-28 | Atlas Copco Ab | RECOMMENDATION DEVICES FOR STRIKING MACHINES |
DE2449191C2 (en) * | 1974-10-16 | 1988-03-24 | Robert Bosch Gmbh, 7000 Stuttgart | hammer |
US4462467A (en) * | 1981-11-09 | 1984-07-31 | Hilti Aktiengesellschaft | Percussion drill machine |
DE3405922A1 (en) * | 1984-02-18 | 1985-08-22 | Robert Bosch Gmbh, 7000 Stuttgart | HAND MACHINE, ESPECIALLY DRILLING HAMMER |
DE3826213A1 (en) * | 1988-08-02 | 1990-02-15 | Bosch Gmbh Robert | DRILLING HAMMER |
US4905772A (en) * | 1988-09-01 | 1990-03-06 | Honsa Thomas W | Rotary power tool with vibration damping |
US5839517A (en) * | 1993-01-27 | 1998-11-24 | Lord Corporation | Vibration isolator for hand-held vibrating devices |
DE19510578A1 (en) * | 1995-03-23 | 1996-09-26 | Atlas Copco Elektrowerkzeuge | Hand machine tools, in particular impact wrenches |
DE19510964A1 (en) * | 1995-03-24 | 1996-09-26 | Hilti Ag | Hand tool for dry machining of brittle and / or ductile components and adapter for a hammer drill |
DE59712767D1 (en) * | 1997-01-30 | 2007-01-04 | Hilti Ag | Device for transmitting pulse-like axial impacts to a drilling tool |
US5848655A (en) * | 1997-05-29 | 1998-12-15 | Ingersoll-Rand Company | Oscillating mass-based tool with dual stiffness spring |
DE19839963A1 (en) * | 1998-09-02 | 2000-03-09 | Hilti Ag | Power tool |
ATE231663T1 (en) * | 1999-09-01 | 2003-02-15 | Ramachandran Ramarathnam | ELECTRICAL HAND TOOLS |
US6975050B2 (en) * | 2000-01-07 | 2005-12-13 | Black & Decker Inc. | Brushless DC motor |
-
2000
- 2000-05-02 DE DE10021355A patent/DE10021355B4/en not_active Expired - Fee Related
-
2001
- 2001-04-23 EP EP01810391A patent/EP1151827B1/en not_active Expired - Lifetime
- 2001-04-23 CN CNB011171081A patent/CN100439043C/en not_active Expired - Fee Related
- 2001-04-23 DE DE50112753T patent/DE50112753D1/en not_active Expired - Lifetime
- 2001-05-01 JP JP2001134168A patent/JP4778630B2/en not_active Expired - Fee Related
- 2001-05-01 US US09/846,931 patent/US6902012B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE10021355A1 (en) | 2001-11-15 |
CN100439043C (en) | 2008-12-03 |
DE50112753D1 (en) | 2007-09-06 |
JP4778630B2 (en) | 2011-09-21 |
JP2001353668A (en) | 2001-12-25 |
DE10021355B4 (en) | 2005-04-28 |
EP1151827A1 (en) | 2001-11-07 |
US20010037889A1 (en) | 2001-11-08 |
CN1321567A (en) | 2001-11-14 |
US6902012B2 (en) | 2005-06-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1151827B1 (en) | Hand tool with electrical percussion system | |
EP1952950B1 (en) | Portable power tool with an oscillation damper | |
EP2425937B1 (en) | Hand-held machine tool | |
EP2265418B1 (en) | Hand-held power tool | |
EP2265420B1 (en) | Hand-held power tool for impacting driven tool attachments | |
DE102007000057B4 (en) | Vibration damper for hand tool | |
EP3227058B1 (en) | Control method for a hand-held power tool | |
EP2089192B1 (en) | Mass oscillating unit for hand-held machine tools with a striking device | |
EP3227056B1 (en) | Hand-held power tool | |
EP2379282B1 (en) | Hand tool having counter-oscillator | |
DE102007055792A1 (en) | Electric hand tool machine with vibration compensator | |
DE2403074C3 (en) | Pneumatic impact tool | |
DE102009027422A1 (en) | Device for reducing and / or compensating vibrations, in particular for a handheld power tool and for use in handheld power tools | |
EP2480381B1 (en) | Connecting rod drive with supplementary oscillating element | |
EP2452782A2 (en) | Hand tool | |
DE202012012149U1 (en) | Hand-held implement with three vibration-decoupled assemblies | |
EP1584422B1 (en) | Method and device for reducing the pressure peaks in a hand tool with an electropneumatic percussion system | |
WO2011000609A1 (en) | Device for reducing and/or compensating vibrations, in particular for a hand machine tool, and for application in hand machine tools | |
EP2301721A2 (en) | Handheld machine with a drive device causing a vibration and method for operating the same | |
DE2031673C3 (en) | Spring hammer | |
DE102009047111A1 (en) | Controlled vibration absorber | |
EP0035984A1 (en) | A recoil damper | |
EP2512749B1 (en) | Handheld machine tool device | |
DE2160106A1 (en) | Impact device | |
EP3626398A1 (en) | Forcibly energised biharmonic damper |
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 |
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 TR Kind code of ref document: A1 Designated state(s): CH DE FR GB LI NL SE |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
17P | Request for examination filed |
Effective date: 20020507 |
|
AKX | Designation fees paid |
Free format text: CH DE FR GB LI NL SE |
|
17Q | First examination report despatched |
Effective date: 20061109 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
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 NL 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 |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20070809 |
|
REF | Corresponds to: |
Ref document number: 50112753 Country of ref document: DE Date of ref document: 20070906 Kind code of ref document: P |
|
REG | Reference to a national code |
Ref country code: SE Ref legal event code: TRGR |
|
ET | Fr: translation filed | ||
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: 20080428 |
|
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: FR Payment date: 20160309 Year of fee payment: 16 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20160411 Year of fee payment: 16 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20160411 Year of fee payment: 16 Ref country code: GB Payment date: 20160420 Year of fee payment: 16 Ref country code: DE Payment date: 20160419 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: 20160412 Year of fee payment: 16 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 50112753 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: NL Ref legal event code: MM Effective date: 20170501 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20170423 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20171229 |
|
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: 20171103 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170502 Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170501 |
|
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: 20170430 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170423 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170430 Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170424 |