EP1172181A1 - Electric hand tool - Google Patents
Electric hand tool Download PDFInfo
- Publication number
- EP1172181A1 EP1172181A1 EP01810653A EP01810653A EP1172181A1 EP 1172181 A1 EP1172181 A1 EP 1172181A1 EP 01810653 A EP01810653 A EP 01810653A EP 01810653 A EP01810653 A EP 01810653A EP 1172181 A1 EP1172181 A1 EP 1172181A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electric hand
- hand tool
- tool
- housing
- tool device
- 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.)
- Withdrawn
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
- B25F5/02—Construction of casings, bodies or handles
- B25F5/021—Construction of casings, bodies or handles with guiding devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/16—Cutting by use of rotating axially moving tool with control means energized in response to activator stimulated by condition sensor
- Y10T408/165—Cutting by use of rotating axially moving tool with control means energized in response to activator stimulated by condition sensor to control Tool rotation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/65—Means to drive tool
Definitions
- the invention relates to an electric hand tool device such as a drill or Rotary hammer for at least partially rotating drive of a picked tool.
- the rotary hammers and other drilling equipment currently available on the market are for two-handed operation only designed. In practice, however, one-hand operation is often used. In particular During assembly work, a free hand is often used to hold one to be fastened Object, for holding another tool, a hole template or Dowels and screws etc. required.
- the operating handle of drilling devices designed for two-hand operation is far away away from the center of gravity of the drill, which makes a large one-handed operation Stress on the wrist and arm muscles results.
- the big one Distance from the operator's hand to the workpiece starting from the front Tool very difficult because a small change in angle on the wrist makes a big one Deflection at the tool tip causes.
- a drill for one-handed operation has an extension the tool axis arranged behind the drive and essentially to it vertically oriented operating handle as well as an armrest that protrudes backwards, in which the forearm assigned to the operating hand can be fastened with a cuff.
- a handheld power tool such as a drilling machine has one Operating handle arranged behind the drive and oriented essentially perpendicular to it as well as a forearm support protruding backwards, one, the operating hand assigned concave shape that partially encompasses the forearm.
- the invention has for its object a solution for a trained for one-handed operation To show electric hand tool, with which the operating hand from the dead weight the electrical hand tool device is relieved and also the attachment of the Tool can be done more precisely.
- Another aspect is an additional one Design for two-hand operation.
- the operating handle is essentially present in an electric hand tool device the center of gravity and at the lower rear end of the Housing an at least partially horizontal contact surface for the operator's hand assigned, forearm, which causes the weight at least partially on the forearm rests.
- the operating handle with a switch for controlling the electric hand tool device is advantageous combined.
- the electric hand tool device is further advantageous by a at the rear end of the Concave recess arranged around the forearm and encircling the forearm with respect to the angular position the tool axis feasible.
- a safety clutch that is responsive to the tool torque is advantageous to separate the drive from the tool holder to a, the counter torque of the Forearm assigned, set a relatively low limit torque, resulting in a Tool blockage is not critical for the user.
- the handheld power tool also with tools with large tool diameters that occasionally cause tool blockages can be used uncritically in one-hand operation.
- An advantageously additionally available side handle alternatively enables two-hand operation for tools with large tool diameters or workpieces that are difficult to machine.
- the side handle with a non-lockable switch button is also advantageous Switching the limit torque of the safety clutch to one for two-hand operation permissible higher value, which means that the second hand on Side handle must attack.
- the handheld power tool advantageously has an independent operation from the power supply Electric accumulators for energy supply, which are further advantageous in the rear part of the electric hand tool device are arranged, whereby their own weight essentially is picked up by the forearm.
- Fig. 1 as an electric hand tool device.
- an electric hand tool device 1 has in the front region of a housing 2 a tool holder 3 for a, not shown, at least partially around an axis A. rotating tool, one in the front area of the housing 2 near the tool holder 3 and thus in front of the focus of the electric hand tool device 1 below the Housing 2 substantially perpendicular to the axis A and thus in normal use vertically arranged control handle 4 with a control switch 5, one vertically to the operating handle 4 and to the axis A arranged side handle 6 with a switch button 7, one arranged in the rear area of the housing 2, in normal use partially horizontal, support surface 8 for resting on a forearm 10 of the operating handle 4 encompassing operator hand 11 with two guide surfaces 9 perpendicular thereto, which for the forearm 10 together with the support surface 8 at least partially Form concave trough for lateral guidance of the electric hand tool device 1, and an electric accumulator 12 arranged in the rear area inside the housing 2 on.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Portable Power Tools In General (AREA)
- Drilling And Boring (AREA)
Abstract
Description
Die Erfindung bezeichnet ein Elektrohandwerkzeuggerät wie eine Bohrmaschine oder einen Bohrhammer zum zumindest teilweise drehenden Antrieb eines aufgenommenen Werkzeugs.The invention relates to an electric hand tool device such as a drill or Rotary hammer for at least partially rotating drive of a picked tool.
Die derzeit marktüblichen Bohrhämmer und sonstige Bohrgeräte sind auf reine Zweihandbedienung ausgelegt. In der Praxis wird aber häufig im Einhandbetrieb gearbeitet. Insbesondere bei Montagearbeiten wird eine freie Hand oft zum Festhalten eines zu befestigenden Gegenstands, zum Halten eines weiteren Werkzeugs, einer Bohrlochschablone oder von Dübeln und Schrauben etc. benötigt.The rotary hammers and other drilling equipment currently available on the market are for two-handed operation only designed. In practice, however, one-hand operation is often used. In particular During assembly work, a free hand is often used to hold one to be fastened Object, for holding another tool, a hole template or Dowels and screws etc. required.
Der Bedienhandgriff von für Zweihandbedienung ausgelegten Bohrgeräten befindet sich weit entfernt vom Schwerpunkt des Bohrgerätes, wodurch sich im Einhandbetrieb eine grosse Belastung für Handgelenk und Armmuskulatur ergibt. Ebenso wird durch den grossen Abstand von der Bedienhand zum Werkstück das Ansetzen des vorne aufgenommenen Werkzeugs stark erschwert, da eine kleine Winkeländerung am Handgelenk eine grosse Auslenkung an der Werkzeugspitze bewirkt.The operating handle of drilling devices designed for two-hand operation is far away away from the center of gravity of the drill, which makes a large one-handed operation Stress on the wrist and arm muscles results. Likewise, by the big one Distance from the operator's hand to the workpiece, starting from the front Tool very difficult because a small change in angle on the wrist makes a big one Deflection at the tool tip causes.
Nach der US5445479 weist eine Bohrmaschine zur Einhandbedienung einen in Verlängerung der Werkzeugachse hinter dem Antrieb angeordneten und im wesentlichen dazu senkrecht orientierten Bedienhandgriff sowie eine nach hinten auskargende Armstütze auf, in welcher der, der Bedienhand zugeordnete, Unterarm mit einer Manschette befestigbar ist.According to US5445479, a drill for one-handed operation has an extension the tool axis arranged behind the drive and essentially to it vertically oriented operating handle as well as an armrest that protrudes backwards, in which the forearm assigned to the operating hand can be fastened with a cuff.
Nach der DE19930008A1 weist eine Handwerkzeugmaschine wie eine Bohrmaschine einen hinter dem Antrieb angeordneten und im wesentlichen dazu senkrecht orientierten Bedienhandgriff sowie eine nach hinten auskargende Unterarmstütze auf, die eine, der Bedienhand zugeordneten, den Unterarm teilweise umgreifende, konkave Form aufweist.According to DE19930008A1, a handheld power tool such as a drilling machine has one Operating handle arranged behind the drive and oriented essentially perpendicular to it as well as a forearm support protruding backwards, one, the operating hand assigned concave shape that partially encompasses the forearm.
In beiden vorbekannten Lösungen wird das gesamte Eigengewicht der Handwerkzeugmaschine von der Bedienhand aufgenommen, da die Armstütze nur zur Aufnahme des, durch das Eigengewicht des bezüglich des Handgriffs vorn überhängenden Antriebs erzeugten, Drehmoments dient. Der hinter dem Antrieb angeordnete Bedienhandgriff erschwert zudem ein passgenaues Ansetzen des Werkzeugs. Eine Benutzung im Zweihandbetrieb wird nicht unterstützt.In both previously known solutions, the total weight of the hand machine tool picked up by the operating hand, since the armrest only holds the, by the dead weight of the drive overhanging in relation to the handle, Torque is used. The operating handle located behind the drive also complicates a precise fitting of the tool. Use in two-hand operation is not supported.
Der Erfindung liegt die Aufgabe zugrunde, eine Lösung für ein zum Einhandbetrieb ausgebildetes Elektrohandwerkzeuggerät aufzuzeigen, mit welcher die Bedienhand vom Eigengewicht des Elektrohandwerkzeuggerätes entlastet wird und zudem das Ansetzen des Werkzeugs zielgenauer erfolgen kann. Ein weiterer Aspekt besteht in einer zusätzlichen Ausgestaltung für den Zweihandbetrieb.The invention has for its object a solution for a trained for one-handed operation To show electric hand tool, with which the operating hand from the dead weight the electrical hand tool device is relieved and also the attachment of the Tool can be done more precisely. Another aspect is an additional one Design for two-hand operation.
Die Aufgabe wird im wesentlichen durch die Merkmale der unabhängigen Ansprüche gelöst. Vorteilhafte Weiterbildungen ergeben sich aus den Unteransprüchen.The task is essentially solved by the features of the independent claims. Advantageous further developments result from the subclaims.
Im wesentlichen befindet sich bei einem Elektrohandwerkzeuggerät der Bedienhandgriff vor dem Schwerpunkt und am, bei zweckentsprechender Benutzung, unterem hinteren Ende des Gehäuses eine zumindest teilweise horizontale Auflagefläche für den, der Bedienhand zugeordneten, Unterarm, wodurch das Eigengewicht zumindest teilweise auf dem Unterarm aufliegt.The operating handle is essentially present in an electric hand tool device the center of gravity and at the lower rear end of the Housing an at least partially horizontal contact surface for the operator's hand assigned, forearm, which causes the weight at least partially on the forearm rests.
Vorteilhaft ist der Bedienhandgriff mit einem Schalter zur Steuerung des Elektrohandwerkzeuggerätes kombiniert.The operating handle with a switch for controlling the electric hand tool device is advantageous combined.
Weiter vorteilhaft ist das Elektrohandwerkzeuggerät durch eine am hinteren Ende des Gehäuses angeordnete, den Unterarm umgreifende, konkave Mulde bezüglich der Winkellage der Werkzeugachse führbar.The electric hand tool device is further advantageous by a at the rear end of the Concave recess arranged around the forearm and encircling the forearm with respect to the angular position the tool axis feasible.
Vorteilhaft ist eine bezüglich des Werkzeugdrehmoments ansprechende Sicherheitskupplung zur Trennung des Antriebs von der Werkzeugaufnahme auf ein, dem Gegendrehmoment des Unterarms zugeordnetes, relativ niedriges Grenzdrehmoment eingestellt, wodurch eine Werkzeugblockade für den Nutzer unkritisch ist. Somit kann das Elektrohandwerkzeuggerät auch mit, gelegentlich Werkzeugblockaden verursachenden, Werkzeugen grossen Werkzeugdurchmessers unkritisch im Einhandbetrieb benutzt werden.A safety clutch that is responsive to the tool torque is advantageous to separate the drive from the tool holder to a, the counter torque of the Forearm assigned, set a relatively low limit torque, resulting in a Tool blockage is not critical for the user. Thus, the handheld power tool also with tools with large tool diameters that occasionally cause tool blockages can be used uncritically in one-hand operation.
Ein vorteilhaft zusätzlich vorhandener Seitenhandgriff ermöglicht alternativ den Zweihandbetrieb bei Werkzeugen grossen Werkzeugdurchmessers oder schwer bearbeitbaren Werkstücken. An advantageously additionally available side handle alternatively enables two-hand operation for tools with large tool diameters or workpieces that are difficult to machine.
Weiter vorteilhaft ist der Seitenhandgriff mit einem nicht arretierbaren Schalttaster zum Umschalten des Grenzdrehmoments der Sicherheitskupplung auf einen für den Zweihandbetrieb zulässigen höheren Wert ausgestattet, wodurch dazu notwendig die zweite Hand am Seitenhandgriff angreifen muss.The side handle with a non-lockable switch button is also advantageous Switching the limit torque of the safety clutch to one for two-hand operation permissible higher value, which means that the second hand on Side handle must attack.
Vorteilhaft weist das Elektrohandwerkzeuggerät zum vom Stromnetz unabhängigen Betrieb Elektroakkumulatoren zur Energieversorgung auf, welche weiter vorteilhaft im hinteren Teil des Elektrohandwerkzeuggerätes angeordnet sind, wodurch deren Eigengewicht im wesentlichen vom Unterarm aufgenommen wird.The handheld power tool advantageously has an independent operation from the power supply Electric accumulators for energy supply, which are further advantageous in the rear part of the electric hand tool device are arranged, whereby their own weight essentially is picked up by the forearm.
Die Erfindung wird bezüglich eines vorteilhaften Ausführungsbeispiels näher erläutert mit: Fig. 1 als Elektrohandwerkzeuggerät.The invention is explained in more detail with respect to an advantageous exemplary embodiment with: Fig. 1 as an electric hand tool device.
Nach Fig. 1 weist ein Elektrohandwerkzeuggerät 1 im vorderen Bereich eines Gehäuses 2
eine Werkzeugaufnahme 3 für ein, nicht dargestelltes, zumindest teilweise um eine Achse A
drehendes Werkzeug, einen im vorderen Bereich des Gehäuses 2 nahe der Werkzeugaufnahme
3 und somit vor dem Schwerpunkt des Elektrohandwerkzeuggerätes 1 unterhalb des
Gehäuses 2 im wesentlichen senkrecht zur Achse A und somit bei üblicher Benutzung
vertikal angeordneten Bedienhandgriff 4 mit einem Steuerungsschalter 5, einen senkrecht
zum Bedienhandgriff 4 und zur Achse A angeordneten Seitenhandgriff 6 mit einem Schalttaster
7, eine im hinteren Bereich des Gehäuses 2 angeordnete, bei üblicher Benutzung
teilweise horizontale, Auflagefläche 8 zur Auflage auf einem Unterarm 10 einer den Bedienhandgriff
4 umgreifenden Bedienerhand 11 mit zwei dazu senkrechten Führungsflächen 9,
welche für den Unterarm 10 gemeinsam mit der Auflagefläche 8 zumindest teilweise eine
konkave Mulde zur seitlichen Führung des Elektrohandwerkzeuggerätes 1 ausbilden, und
einen im hinteren Bereich im Inneren des Gehäuses 2 angeordneten Elektroakkumulator 12
auf.1, an electric
Claims (8)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10034378A DE10034378A1 (en) | 2000-07-14 | 2000-07-14 | Rotary electric handtool has housing provided at its rear with bearing surface shaped for support by lower arm of user |
DE10034378 | 2000-07-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1172181A1 true EP1172181A1 (en) | 2002-01-16 |
Family
ID=7648986
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01810653A Withdrawn EP1172181A1 (en) | 2000-07-14 | 2001-07-04 | Electric hand tool |
Country Status (5)
Country | Link |
---|---|
US (1) | US20020054796A1 (en) |
EP (1) | EP1172181A1 (en) |
JP (1) | JP2002079478A (en) |
CN (1) | CN1341500A (en) |
DE (1) | DE10034378A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011114399A1 (en) * | 2011-09-20 | 2013-03-21 | C. & E. Fein Gmbh | Hand-held machine tool e.g. angle grinder, for performing e.g. rough grinding operation, has motor coupled with gear, and gripping region provided between gear head and motor housing and designed for engaging with hand |
US11872683B2 (en) | 2021-06-07 | 2024-01-16 | Black & Decker Inc. | Side handle for power tool |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004003027B3 (en) * | 2004-01-21 | 2005-07-14 | Metabowerke Gmbh | Electric hand tool device, e.g. drill or screwdriver, has rotary drive for tool in holder, housing for drive motor for driving tool connected via drive shaft and handle for mounting on housing near center of gravity of tool device |
DE102004016009A1 (en) * | 2004-04-01 | 2005-10-20 | Bosch Gmbh Robert | Hand tool, in particular drill and / or percussion hammer |
US20070074407A1 (en) * | 2005-09-30 | 2007-04-05 | Serdynski David P | Tool and method of using same |
US9776296B2 (en) | 2008-05-09 | 2017-10-03 | Milwaukee Electric Tool Corporation | Power tool dust collector |
US8813868B2 (en) * | 2008-05-09 | 2014-08-26 | Milwaukee Electric Tool Corporation | Auxiliary handle for use with a power tool |
MX2012010945A (en) * | 2010-03-24 | 2012-11-12 | Bryan C Cook | Ergonomic hand-held power tool and methods of use. |
CN103894990A (en) * | 2012-12-28 | 2014-07-02 | 苏州宝时得电动工具有限公司 | Handheld electric tool |
US11084006B2 (en) | 2017-03-23 | 2021-08-10 | Milwaukee Electric Tool Corporation | Mud mixer |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR689169A (en) * | 1930-01-31 | 1930-09-03 | Meudon Forges Atel | Improvements to compressed air jackhammers |
FR2628195A1 (en) * | 1988-03-04 | 1989-09-08 | Mathys Georges | Lockable forearm gripper for guns or instruments - has extension with support piece at end which is orientable bottom of extension forming acute angle to back of butt |
DE4443463A1 (en) * | 1994-12-07 | 1996-06-13 | Wuerth Adolf Gmbh & Co Kg | Bolt setting or riveting device |
DE19617882A1 (en) * | 1996-05-04 | 1997-11-13 | Metabowerke Kg | Motorised two-handed electric tool |
-
2000
- 2000-07-14 DE DE10034378A patent/DE10034378A1/en not_active Withdrawn
-
2001
- 2001-07-04 EP EP01810653A patent/EP1172181A1/en not_active Withdrawn
- 2001-07-06 CN CN01121762.6A patent/CN1341500A/en active Pending
- 2001-07-12 US US09/903,898 patent/US20020054796A1/en not_active Abandoned
- 2001-07-13 JP JP2001213101A patent/JP2002079478A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR689169A (en) * | 1930-01-31 | 1930-09-03 | Meudon Forges Atel | Improvements to compressed air jackhammers |
FR2628195A1 (en) * | 1988-03-04 | 1989-09-08 | Mathys Georges | Lockable forearm gripper for guns or instruments - has extension with support piece at end which is orientable bottom of extension forming acute angle to back of butt |
DE4443463A1 (en) * | 1994-12-07 | 1996-06-13 | Wuerth Adolf Gmbh & Co Kg | Bolt setting or riveting device |
DE19617882A1 (en) * | 1996-05-04 | 1997-11-13 | Metabowerke Kg | Motorised two-handed electric tool |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011114399A1 (en) * | 2011-09-20 | 2013-03-21 | C. & E. Fein Gmbh | Hand-held machine tool e.g. angle grinder, for performing e.g. rough grinding operation, has motor coupled with gear, and gripping region provided between gear head and motor housing and designed for engaging with hand |
US11872683B2 (en) | 2021-06-07 | 2024-01-16 | Black & Decker Inc. | Side handle for power tool |
US11931879B2 (en) | 2021-06-07 | 2024-03-19 | Black & Decker Inc. | Power tool dual-trigger operation |
Also Published As
Publication number | Publication date |
---|---|
CN1341500A (en) | 2002-03-27 |
DE10034378A1 (en) | 2002-01-24 |
JP2002079478A (en) | 2002-03-19 |
US20020054796A1 (en) | 2002-05-09 |
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