EP1637288B1 - Vibration damping electric hand tool - Google Patents

Vibration damping electric hand tool Download PDF

Info

Publication number
EP1637288B1
EP1637288B1 EP20050108553 EP05108553A EP1637288B1 EP 1637288 B1 EP1637288 B1 EP 1637288B1 EP 20050108553 EP20050108553 EP 20050108553 EP 05108553 A EP05108553 A EP 05108553A EP 1637288 B1 EP1637288 B1 EP 1637288B1
Authority
EP
European Patent Office
Prior art keywords
hand tool
electric hand
air
elastic portion
outer housing
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.)
Active
Application number
EP20050108553
Other languages
German (de)
French (fr)
Other versions
EP1637288A1 (en
Inventor
Helmut Burger
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 EP1637288A1 publication Critical patent/EP1637288A1/en
Application granted granted Critical
Publication of EP1637288B1 publication Critical patent/EP1637288B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/008—Cooling means
    • 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
    • B25D17/20—Devices for cleaning or cooling tool or work
    • 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
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/006—Vibration damping means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D2217/0057—Details related to cleaning or cooling the tool or workpiece
    • B25D2217/0061—Details related to cleaning or cooling the tool or workpiece related to cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2222/00—Materials of the tool or the workpiece
    • B25D2222/54—Plastics
    • B25D2222/57—Elastomers, e.g. rubber
    • 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
    • B25D2250/065—Details regarding assembling of the tool
    • 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
    • B25D2250/085—Elastic behaviour of tool components
    • 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
    • B25D2250/091—Electrically-powered tool components
    • B25D2250/095—Electric motors
    • 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
    • B25D2250/371—Use of springs

Definitions

  • the object of the invention is to provide an electric hand tool with a vibration-damped percussion unit, which has an optimal cooling air flow, so that an air short circuit between the intake and the blow-out avoided and the penetration of moisture in the outer casing is largely prevented.
  • the suction area in which there is a negative pressure, from the blow-out area, in which pressure prevails, completely sealed.
  • no air short circuit can occur, with which the device has a much better efficiency and the cooling performance is improved, and on the other hand, penetrating moisture is completely removed from the air flow from the outer housing.
  • the dimensions, in particular the maximum longitudinal extension, and the formation of the elastic portion are chosen such that upon movement of the movable percussion group within the outer housing of up to 15 mm no tensile forces act on the elastic portion.
  • the exhaust air is advantageously blown by the fan from the engine in an optimally designed space without bottlenecks before it passes through the outlet air openings to the outside. Due to the targeted air flow in the blow-out area, sufficient heat is still dissipated from the percussion mechanism and the gearbox despite the cooling air preheated by the engine.

Description

Technisches GebietTechnical area

Die Erfindung betrifft ein Elektrohandwerkzeug mit einem zumindest teilweise schlagenden Schlagwerk in einer Schlagwerksbaugruppe, die in einem Aussengehäuse vibrationsgedämpft beweglich ist, der im Oberbegriff des Patentanspruchs 1 genannten Art.The invention relates to an electric hand tool with an at least partially striking percussion in a percussion unit, which is vibration-damped in an outer housing, referred to in the preamble of claim 1. Art.

Stand der TechnikState of the art

Um im Betrieb eines Elektrohandwerkzeuges, wie ein Bohr-, Kombi- oder Meisselhammer, entstehende Wärme aus dem Motor sowie aus dem Schlagwerk abzuführen, wird über ein Kühlgebläse, z. B. einem von dem Motor angetriebenen Lüfter, Kühlluft über Ansaug-Luftöffnungen im Aussengehäuse des Elektrohandwerkzeuges angesaugt, über den Motor und das Schlagwerk geführt und anschliessend über Auslass-Luftöffnungen im Aussengehäuse ausgeblasen. Labyrinthe innerhalb des Aussengehäuses trennen den Ansaugbereich und den Ausblasbereich.In order to dissipate heat generated during operation of an electric hand tool, such as a drill, combi or chisel hammer, out of the engine and out of the percussion mechanism, a cooling fan, for. B. sucked by the engine fan, cooling air via suction air openings in the outer housing of the electric hand tool, passed over the engine and the striking mechanism and then blown through outlet air openings in the outer housing. Labyrinths within the outer housing separate the intake area and the blow-out area.

Bei einem vibrationsgedämpften Elektrohandwerkzeug, bei dem die Schlagwerksbaugruppe mit dem zumindest teilweise schlagenden Schlagwerk innerhalb des Aussengehäuses beweglich gelagert ist, ist eine vollständige Abdichtung des Ansaugbereichs von dem Ausblasbereich mit Labyrinthen nahezu unmöglich. Durch den somit entstehenden Luftkurzschluss innerhalb des Elektrohandwerkzeuges verschlechtert sich die Kühlleistung durch die vorgewärmte zirkulierende Luft und der Wirkungsgrad des Elektrohandwerkzeuges verringert sich.In a vibration-damped electric hand tool, in which the percussion unit is movably mounted with the at least partially striking percussion mechanism within the outer housing, a complete sealing of the suction area of the discharge area with labyrinths is almost impossible. Due to the resulting air short circuit within the electric hand tool, the cooling performance deteriorates due to the preheated circulating air and the efficiency of the electric hand tool is reduced.

Aus der EP 1 302 281 A1 ist ein Elektrohandwerkzeug mit einem zumindest teilweise schlagenden elektropneumatischen Schlagwerk in einer Schlagwerksbaugruppe bekannt, die in einem Aussengehäuse vibrationsgedämpft beweglich ist. Das Aussengehäuse weist Ansaug-Lüftöffnungen für ein Kühlgebläse auf und zumindest eine Kühlluftleitung zum Kühlgebläse ist an der Schlagwerksbaugruppe angeordnet. Dieses Elektrohandwerkzeug weist einen guten Wirkungsgrad auf, da ein Luftkurzschluss zwischen dem Ansaugbereich und dem Ausblasbereich weitgehend verhindert ist. Nachteilig an der bekannten Lösung ist, dass ein geringer Anteil der angesaugten Kühlluft innerhalb des Aussengehäuses zirkulieren und Feuchtigkeit, z. B. bei einem Einsatz des Elektrohandwerkzeuges im Regen, in das Aussengehäuse eindringen kann, welche durch den Luftstrom nicht wieder aus dem Elektrogerät abgeführt wird. Die eindringende Feuchtigkeit kann beispielsweise zu Schäden an der Elektrik oder Elektronik führen.From the EP 1 302 281 A1 is an electric hand tool with an at least partially beating electro-pneumatic percussion in a percussion unit known, which is vibration dampened movable in an outer housing. The outer housing has suction ventilation openings for a cooling fan and at least one cooling air line to the cooling fan is arranged on the striking mechanism assembly. This electric hand tool has a good efficiency, since an air short circuit between the intake and the blow-out is largely prevented. A disadvantage of the known solution is that a small proportion of the sucked cooling air circulate within the outer housing and moisture, z. B. when using the electric hand tool in the rain, can penetrate into the outer housing, which is not removed by the air flow again from the electrical appliance. The penetrating moisture can cause damage to the electrical system or electronics, for example.

Aus der US 5,322,131 A ist ein pneumatischer Meisselhammer mit einer vibrationsgedämpften Schlagwerksgruppe bekannt, bei dem im Handgriff ein Anschluss für Druckluft sowie ein Kanal vorgesehen sind, der über ein flexibles Rohrstück die Druckluft durch das vibrationsgedämpft gelagerte Motorgehäuse zum Motor leitet. Das Rohrstück ist an einem Ende fest an dem Handgriff und am anderen, freien Ende abgedichtet im Motorgehäuse gelagert. Das Rohrstück ist aus einem Material mit geringer Reibung gefertigt. Bei einer relativen Bewegung des Motorgehäuses zum Handgriff gleitet das Rohrstück entlang des Motorgehäuses, wobei die Dichtung eine Druckluftzuführung vom Druckluftanschluss zum Motor sicherstellt.From the US 5,322,131 A is a pneumatic chisel hammer with a vibration-damped percussion group known in the handle a connection for compressed air and a channel are provided, which directs the compressed air through a flexible pipe section through the vibration damped mounted motor housing to the engine. The pipe section is fixedly mounted at one end to the handle and at the other, free end mounted in the motor housing. The pipe section is made of a material with low friction. Upon relative movement of the motor housing to the handle, the tube slides along the motor housing, the seal ensuring compressed air supply from the compressed air port to the motor.

Darstellung der ErfindungPresentation of the invention

Aufgabe der Erfindung ist es, ein Elektrohandwerkzeug mit einer vibrationsgedämpften Schlagwerksbaugruppe zu schaffen, das eine optimale Kühlluftführung aufweist, so dass ein Luftkurzschluss zwischen dem Ansaugbereich und dem Ausblasbereich vermieden und das Eindringen von Feuchtigkeit in das Aussengehäuse weitgehend verhindert wird.The object of the invention is to provide an electric hand tool with a vibration-damped percussion unit, which has an optimal cooling air flow, so that an air short circuit between the intake and the blow-out avoided and the penetration of moisture in the outer casing is largely prevented.

Die Aufgabe ist durch die Merkmale des unabhängigen Anspruchs gelöst. Vorteilhafte Weiterbildungen sind in den Unteransprüchen dargelegt.The object is solved by the features of the independent claim. Advantageous developments are set forth in the subclaims.

Gemäss der Erfindung weist die Kühlluftleitung einen ersten starren, am Aussengehäuse angeordneten Abschnitt und einen zweiten starren, an der Schlagwerksbaugruppe angeordneten Abschnitt auf. Der elastische Abschnitt ist zwischen dem ersten und dem zweiten starren Abschnitt angeordnet. Dies ermöglicht die Anordnung des elastischen Abschnitts innerhalb eines Bereichs des Aussengehäuses, in dem ein ausreichend grosser Raum für den elastischen Abschnitt vorhanden ist.According to the invention, the cooling air line has a first rigid section arranged on the outer housing and a second, rigid section arranged on the striking mechanism subassembly. The elastic portion is disposed between the first and second rigid portions. This allows the arrangement of the elastic portion within a portion of the outer case in which there is a sufficiently large space for the elastic portion.

Damit ist der Ansaugbereich, in dem Unterdruck herrscht, vom Ausblasbereich, in dem Überdruck herrscht, vollständig abgedichtet. Einerseits kann kein Luftkurzschluss entstehen, womit das Gerät einen wesentlich besseren Wirkungsgrad aufweist und die Kühlleistung verbessert ist, und andererseits wird eindringende Feuchtigkeit von dem Luftstrom vollständig aus dem Aussengehäuse entfernt. Die Abmessungen, insbesondere die maximale Längserstreckung, und die Ausbildung des elastischen Abschnitts sind derart gewählt, dass bei einer Bewegung der beweglichen Schlagwerkgruppe innerhalb des Aussengehäuses von bis zu 15 mm keine Zugkräfte auf den elastischen Abschnitt wirken. Die Abluft wird vorteilhaft durch den Lüfter aus dem Motor in einen optimal ausgebildeten Raum ohne Engpässe geblasen, bevor sie durch die Auslass-Luftöffnungen nach aussen gelangt. Durch die gezielte Luftführung im Ausblasbereich wird trotz der von dem Motor vorgewärmten Kühlluft noch ausreichend Wärme aus dem Schlagwerk und dem Getriebe abgeleitet.Thus, the suction area, in which there is a negative pressure, from the blow-out area, in which pressure prevails, completely sealed. On the one hand, no air short circuit can occur, with which the device has a much better efficiency and the cooling performance is improved, and on the other hand, penetrating moisture is completely removed from the air flow from the outer housing. The dimensions, in particular the maximum longitudinal extension, and the formation of the elastic portion are chosen such that upon movement of the movable percussion group within the outer housing of up to 15 mm no tensile forces act on the elastic portion. The exhaust air is advantageously blown by the fan from the engine in an optimally designed space without bottlenecks before it passes through the outlet air openings to the outside. Due to the targeted air flow in the blow-out area, sufficient heat is still dissipated from the percussion mechanism and the gearbox despite the cooling air preheated by the engine.

Vorzugsweise ist der elastische Abschnitt als Faltenbalg ausgebildet, womit der elastische Abschnitt seine Funktion des Ausgleichs der Bewegungen der Schlagwerkgruppe optimal wahrnehmen kann und platzsparend ausgebildet ist. Alternativ ist der elastische Abschnitt beispielsweise als eine Hülse ausgebildet.Preferably, the elastic portion is formed as a bellows, whereby the elastic portion can optimally perform its function of balancing the movements of the percussion group and is designed to save space. Alternatively, the elastic portion is formed, for example, as a sleeve.

Bevorzugt ist der elastische Abschnitt aus einem Elastomer gefertigt. Vorteilhaft wird der elastische Abschnitt aus einem geeigneten Gummi hergestellt.Preferably, the elastic portion is made of an elastomer. Advantageously, the elastic portion is made of a suitable rubber.

Aus der nachfolgenden Detailbeschreibung und der Gesamtheit der Patentansprüche ergeben sich weitere vorteilhafte Ausführungsformen und Merkmalskombinationen der Erfindung.From the following detailed description and the totality of the claims, further advantageous embodiments and feature combinations of the invention result.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Die Erfindung wird nachstehend anhand eines Ausführungsbeispieles näher erläutert. Die einzige Figur zeigt das erfindungsgemässe Elektrohandwerkzeug in einem Teilschnitt.The invention will be explained in more detail below with reference to an embodiment. The single FIGURE shows the inventive electric hand tool in a partial section.

Wege zur Ausführung der ErfindungWays to carry out the invention

Das dargestellte Elektrohandwerkzeug 1 weist ein zumindest teilweise schlagendes, elektropneumatisches Schlagwerk 2 auf, das in einer Schlagwerkgruppe 3 integriert ist. Die Schlagwerkgruppe 3 umfasst weiter einen Motor 4 und ein Getriebe 5 und ist in dem Aussengehäuse 6 vibrationsgedämpft beweglich gelagert. An der Schlagwerkgruppe 3 ist eine Kühlluftleitung 11 angeordnet, die ausgehend von den Ansaug-Luftöffnungen 7 in dem Aussengehäuse 6 Kühlluft zum Kühlgebläse 8, in Form eines Lüfters, führt.The illustrated electric hand tool 1 has an at least partially striking, electro-pneumatic impact mechanism 2, which is integrated in a percussion group 3. The percussion group 3 further comprises a motor 4 and a gear 5 and is mounted vibration-damped in the outer housing 6 movable. At the percussion group 3, a cooling air line 11 is arranged, which, starting from the intake air openings 7 in the outer housing 6 cooling air to the cooling fan 8, in the form of a fan, leads.

Die Kühlluftleitung 11 weist einen ersten, starren Abschnitt 12, der im Bereich der Ansaug-Luftöffnungen 7 an dem Aussengehäuse 6 angeordnet ist, und einen zweiten, starren Abschnitt 13 auf, der an der Schlagwerkgruppe 3 angeordnet ist. Der erste, starre Abschnitt 12 ist über einen elastischen Abschnitt 14, in Form eines Faltenbalgs aus einem Elastomer, mit dem zweiten, starren Abschnitt 13 verbunden.The cooling air duct 11 has a first, rigid section 12, which is arranged on the outer housing 6 in the region of the intake air openings 7, and a second, rigid section 13, which is arranged on the striking mechanism group 3. The first rigid portion 12 is connected to the second rigid portion 13 via an elastic portion 14 in the form of a bellows made of an elastomer.

Der von dem Kühlgebläse 8 erzeugte Luftstrom 21 der Kühlluft wird durch die Ansaug-Luftöffnungen 7 in dem Aussengehäuse 6 durch die Kühlluftleitung 11 angesaugt, über den Motor 4 geführt und anschliessend an dem Getriebe 5 sowie dem Schlagwerk 2 vorbei durch die Auslass-Luftöffnungen 9 in dem Aussengehäuse 6 ausgeblasen wird.The air flow 21 of the cooling air generated by the cooling fan 8 is sucked through the suction air openings 7 in the outer housing 6 through the cooling air line 11, passed through the motor 4 and then past the gear 5 and the percussion mechanism 2 through the outlet air openings 9 in the outer housing 6 is blown out.

Claims (3)

  1. Hand-held power tool (1), having a striker unit (2), which applies impacts at least at certain times, in a striker unit subassembly (3) which is mobile in an external housing (6) while subject to vibration damping, the external housing (6) having openings (7) for indrawn air for a cooling fan (8), and at least one duct (11) for conveying cooling air to the cooling fan (8) being arranged on the striker unit subassembly (3), characterised in that the duct (11) for conveying cooling air has a first rigid portion (12) which is arranged on the external housing (6) and a second rigid portion (13) which is arranged on the striker unit subassembly (3), an elastic portion (14) being arranged between the first and second rigid portions (12, 13).
  2. Hand-held power tool according to claim 1, characterised in that the elastic portion (14) is in the form of a bellows.
  3. Hand-held power tool according to claim 1 or 2, characterised in that the elastic portion (14) is made of an elastomer.
EP20050108553 2004-09-16 2005-09-16 Vibration damping electric hand tool Active EP1637288B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004044822 2004-09-16

Publications (2)

Publication Number Publication Date
EP1637288A1 EP1637288A1 (en) 2006-03-22
EP1637288B1 true EP1637288B1 (en) 2014-08-13

Family

ID=35448091

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20050108553 Active EP1637288B1 (en) 2004-09-16 2005-09-16 Vibration damping electric hand tool

Country Status (1)

Country Link
EP (1) EP1637288B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10814468B2 (en) 2017-10-20 2020-10-27 Milwaukee Electric Tool Corporation Percussion tool
US10926393B2 (en) 2018-01-26 2021-02-23 Milwaukee Electric Tool Corporation Percussion tool

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006038756A1 (en) * 2006-08-17 2008-02-21 Marquardt Gmbh Power tool e.g. drilling machine, has fixed and/or flexible air channel, which is arranged in housing and directs air flow and/or distributing air flow to cool heat source, where one end of air channel is turned towards fan wheel
DE102007000093A1 (en) 2007-02-15 2008-08-21 Hilti Ag Hand tool
DE102007043916A1 (en) * 2007-09-14 2009-04-02 Robert Bosch Gmbh Electric manual machine tool, particularly percussion drill machine, has air guidance ring that leads to portion of air flow of functional module or air guidance ring section, is arranged at extent of electric motor
EP2105261A1 (en) * 2008-03-27 2009-09-30 AEG Electric Tools GmbH Electric tool, in particular hammer drill and/or chipping hammer
JP5477759B2 (en) * 2008-07-30 2014-04-23 日立工機株式会社 Electric tool
DE102009002982A1 (en) * 2009-05-11 2010-11-18 Robert Bosch Gmbh Hand tool machine, in particular electric hand tool machine
DE102010030059A1 (en) * 2010-06-15 2011-12-15 Hilti Aktiengesellschaft Hand-guided tacker
DE102012007405B4 (en) * 2012-04-16 2017-02-09 Andreas Stihl Ag & Co. Kg implement
JP6258093B2 (en) 2014-03-24 2018-01-10 株式会社マキタ Impact tool
EP4037161A1 (en) * 2021-02-02 2022-08-03 Andreas Stihl AG & Co. KG Hand-held shaft work apparatus
GB2619018A (en) 2022-05-23 2023-11-29 Black & Decker Inc Power tool

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5322131A (en) * 1993-05-20 1994-06-21 Chicago Pneumatic Tool Company Vibration-reduced pneumatic tool
DE19626254A1 (en) * 1996-06-29 1998-01-08 Bosch Gmbh Robert Electric hand machine tool
US6314922B1 (en) * 1998-07-23 2001-11-13 Andreas Stihl Ag & Co. Hand-held working tool
DE19833126A1 (en) * 1998-07-23 2000-01-27 Stihl Maschf Andreas Hand held motor chain saws, containing combustion air channel extending tangentially to fan wheel rotation direction and leading straight into air filter, and having channel entrance formed by fan wheel housing base
US6043575A (en) * 1999-03-05 2000-03-28 Snap-On Tools Company Power tool with air deflector for venting motor exhaust air
EP1302281B1 (en) 2001-10-15 2007-05-02 HILTI Aktiengesellschaft Cooling air duct in an electric percussive tool
US7152695B2 (en) * 2002-09-20 2006-12-26 Snap-On Incorporated Power tool with air seal and vibration dampener

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10814468B2 (en) 2017-10-20 2020-10-27 Milwaukee Electric Tool Corporation Percussion tool
US11633843B2 (en) 2017-10-20 2023-04-25 Milwaukee Electric Tool Corporation Percussion tool
US10926393B2 (en) 2018-01-26 2021-02-23 Milwaukee Electric Tool Corporation Percussion tool
US11059155B2 (en) 2018-01-26 2021-07-13 Milwaukee Electric Tool Corporation Percussion tool
US11141850B2 (en) 2018-01-26 2021-10-12 Milwaukee Electric Tool Corporation Percussion tool
US11203105B2 (en) 2018-01-26 2021-12-21 Milwaukee Electric Tool Corporation Percussion tool
US11759935B2 (en) 2018-01-26 2023-09-19 Milwaukee Electric Tool Corporation Percussion tool
US11865687B2 (en) 2018-01-26 2024-01-09 Milwaukee Electric Tool Corporation Percussion tool

Also Published As

Publication number Publication date
EP1637288A1 (en) 2006-03-22

Similar Documents

Publication Publication Date Title
EP1637288B1 (en) Vibration damping electric hand tool
DE102004060852B4 (en) impact tool
EP1666213B1 (en) Electrical tool apparatus
EP1910038B1 (en) Linearly driven and air-cooled boring and/or percussion hammer
EP1965952B1 (en) Manual machine tool having a drivetrain and a decoupling unit
DE10255162A1 (en) Vibration-decoupled hammer mechanism assembly
DE102009026542A1 (en) machine tool
EP1716979A1 (en) Percussive tool or drill
EP2081739A1 (en) System comprising a hand-held machine tool
DE102018123752A1 (en) dust collectors
EP1910039B1 (en) Percussion mechanism for an at least percussively-operated hand-held tool
EP1700672B1 (en) Attachment
EP2314420B1 (en) Motor driven tool device with hammer drill operation mode
DE3340799A1 (en) Electric tool
WO2021094213A1 (en) Striking mechanism assembly
DE102009045799A1 (en) Machine tool and method for cooling a machine tool
DE10356928A1 (en) Schlagwerk, piston device and machine tool
DE102009055411B4 (en) Hand machine tool device with a chip blowing device
DE102012203758A1 (en) Hand machine tool device
DE102011088485A1 (en) Percussion device for hand tool machine, particularly drilling or chipping hammer, comprises piston with intermediate base movably mounted relative to piston base body, and valve element provided to vent of air chamber of air spring unit
WO2011003646A1 (en) Hammer-drilling and/or cutting device
EP2646203B1 (en) Hammer mechanism
DE102019217195A1 (en) Tapping suction device
WO2022171322A1 (en) Electropneumatic percussion mechanism
DE102013211994A1 (en) Hand tool

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 BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

17P Request for examination filed

Effective date: 20060922

AKX Designation fees paid

Designated state(s): CH DE FR GB IT LI

17Q First examination report despatched

Effective date: 20061128

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20140429

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 IT 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: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502005014477

Country of ref document: DE

Effective date: 20140918

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502005014477

Country of ref document: DE

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: 20150515

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 13

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 14

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230830

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

Ref country code: GB

Payment date: 20230920

Year of fee payment: 19

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

Ref country code: FR

Payment date: 20230928

Year of fee payment: 19

Ref country code: DE

Payment date: 20230920

Year of fee payment: 19

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

Ref country code: IT

Payment date: 20230927

Year of fee payment: 19

Ref country code: CH

Payment date: 20231001

Year of fee payment: 19