EP0469386B1 - Hand power screwdriver - Google Patents

Hand power screwdriver Download PDF

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Publication number
EP0469386B1
EP0469386B1 EP91111899A EP91111899A EP0469386B1 EP 0469386 B1 EP0469386 B1 EP 0469386B1 EP 91111899 A EP91111899 A EP 91111899A EP 91111899 A EP91111899 A EP 91111899A EP 0469386 B1 EP0469386 B1 EP 0469386B1
Authority
EP
European Patent Office
Prior art keywords
screwdriver
hand
handle
drive motor
unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP91111899A
Other languages
German (de)
French (fr)
Other versions
EP0469386A1 (en
Inventor
Gerhard Farian
Günter Haas
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.)
Karl M Reich Maschinenfabrik GmbH
Original Assignee
Karl M Reich Maschinenfabrik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Karl M Reich Maschinenfabrik GmbH filed Critical Karl M Reich Maschinenfabrik GmbH
Priority to AT91111899T priority Critical patent/ATE102531T1/en
Publication of EP0469386A1 publication Critical patent/EP0469386A1/en
Application granted granted Critical
Publication of EP0469386B1 publication Critical patent/EP0469386B1/en
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
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/02—Arrangements for handling screws or nuts
    • B25B23/04—Arrangements for handling screws or nuts for feeding screws or nuts
    • B25B23/045—Arrangements for handling screws or nuts for feeding screws or nuts using disposable strips or discs carrying the screws or nuts

Definitions

  • the present invention relates to a hand-held screwdriver according to the preamble of claim 1.
  • the handle is located approximately in the middle of the device, so that the center of gravity of the screwing device is substantially above the hand surrounding the handle.
  • the object of the present invention is therefore to provide a hand-held screwdriver of the type mentioned at the outset, which can be held securely with one hand for use in any direction and which enables convenient and fatigue-free working.
  • the hand screwdriver according to the invention is e.g. When screwing horizontally, it is kept below its center of gravity and the line of action of the pressing hand is essentially flush with the screw blade, i.e. with the screw to be screwed in, so that even in unfavorable working positions, fatigue-free working with one hand is possible and the other hand can be used, e.g. to hold the workpiece to be screwed on.
  • the drive motor is thus raised by the gear spacing with respect to the axis of the screw blade, the handle being arranged essentially in the area of the gear and extending into the immediate vicinity of the axis of the screw blade, so that the holding hand roughly aligned with the screw blade.
  • a switching strip is provided for fatigue-free switching on and off of the screwing device, with which it is possible to operate the switch in any working position without forced holding.
  • two mutually offset fastening positions are provided for the magazine. This makes it possible to adapt the screwdriver to a wide variety of applications, to allow a perfect view of the screwing point and, in the case of strong, long-lasting axial pressure, e.g. For self-drilling screws, attach a grip bead on the guide attachment for the second hand to support pressure.
  • An extension device can be provided between the drive unit and the guide attachment, with which it is possible to operate the screwing device comfortably even when screwing on the ceiling or on the floor.
  • the screwing device 1 shown in FIGS. 1 and 2 is driven by an electric drive motor 2 with axis 3-3. It acts via a gear transmission 4 on a screw blade 5 with an axis 6-6, which is rotatably mounted in a guide attachment 7.
  • the guide attachment 7 consists of a guide sleeve 8 pivotally connected to the drive motor 2, in which a bearing body 9 is axially displaceably mounted.
  • the screws 11 are connected to one another by a plastic band 13 and stored as a roller in a magazine 14 which is fastened to a fastening surface 15 of the guide sleeve 8.
  • Screw unit 16 Guide attachment 7 with guide sleeve 8 and bearing body 9 and magazine 14 are to be referred to together as a screw unit 16.
  • a switching bar 19 is pivotally arranged on the handle 17, with which the drive motor 2 can be switched on and off.
  • FIG 3 and 4 show a second embodiment of the hand-held screwdriver, in which the magazine 14 is fastened to a second fastening surface 20 of the guide sleeve 8 via an angle 21.
  • This makes it possible to attach a grip bead 22 to the first fastening surface 15 of the guide sleeve 8, so that the screwing device can also be held with the second hand in certain applications.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Domestic Plumbing Installations (AREA)
  • Gripping On Spindles (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Mechanical Operated Clutches (AREA)
  • Dowels (AREA)

Abstract

In a hand power screwdriver (1), the handle (17) extending perpendicularly to the motor axis (3-3) is arranged in the region of the centre of gravity of the screwdriver (1) and the screwing blade (5) is mounted, offset with respect to the motor axis (3-3), between the latter and the handle (17) in a guiding attachment (7). Consequently, the screwdriver (1) can be held safely and without fatigue, the pressing hand being in alignment with the screwing blade (5) so that perfect perpendicular screwing-in of the screw (11) is guaranteed. <IMAGE>

Description

Die vorliegende Erfindung betrifft ein Hand-Schraubgerät gemäß Oberbegriff des Anspruchs 1.The present invention relates to a hand-held screwdriver according to the preamble of claim 1.

Aus der DE-OS 33 33 427 ist dazu ein Schraubgerät bekannt, bei dem der Handgriff etwa in der Mitte des Antriebsmotors angeordnet ist.From DE-OS 33 33 427 a screwing device is known in which the handle is arranged approximately in the middle of the drive motor.

Bei weiteren bekannten Schraubgeräten, siehe z.B. US-A-3 203 283, liegt der Handgriff etwa in der Mitte des Gerätes, sodaß also der Schwerpunkt des Schraubgeräts wesentlich über der den Handgriff umfassenden Hand liegt.For other known screwdrivers, see e.g. US-A-3 203 283, the handle is located approximately in the middle of the device, so that the center of gravity of the screwing device is substantially above the hand surrounding the handle.

Hier kommt jedoch als weiterer Nachteil noch zu daß bei den bekannten Geräten die Achse der Schraubklinge deutlich über dem Handgriff des Antriebsmotors angeordnet ist. Damit ergibt sich beim Einschraubvorgang ein Kippmoment, das zu einer Schrägstellung der einzudrehenden Schraube führen kann. Es ist damit schwierig, solche Schraubgeräte nur mit einer Hand zu halten.Here, however, there is a further disadvantage that in the known devices the axis of the screw blade is arranged clearly above the handle of the drive motor. This results in a tilting moment during the screwing-in process, which can lead to an inclined position of the screw to be screwed in. It is difficult to hold such screwdrivers with only one hand.

Für ein ermüdungsfreies Arbeiten mit den bekannten Schraubgeräten ist es also immer notwendig, dieses mit beiden Händen zu halten.For fatigue-free work with the known screwdrivers, it is always necessary to hold it with both hands.

Aufgabe der vorliegenden Erfindung ist daher die Schaffung eines Hand-Schraubgeräts der eingangs genannten Art, das mit einer Hand zum Einsatz in jeder Richtung sicher gehalten werden kann und mit dem ein bequemes und ermüdungsfreies Arbeiten ermöglicht wird.The object of the present invention is therefore to provide a hand-held screwdriver of the type mentioned at the outset, which can be held securely with one hand for use in any direction and which enables convenient and fatigue-free working.

Diese Aufgabe wird erfindungsgemäß durch die im kennzeichnenden Teil des Anspruchs 1 angegebenen Merkmale gelöst.This object is achieved by the features specified in the characterizing part of claim 1.

Das erfindungsgemäße Hand-Schraubgerät wird z.B. beim waagrechten Schrauben unter seinem Schwerpunkt gehalten und die Wirkungslinie der drückenden Hand fluchtet im wesentlichen mit der Schraubklinge, also mit der einzudrehenden Schraube, sodaß also auch in ungunstigen Arbeitspositionen ein ermüdungsfreies Arbeiten mit einer Hand möglich ist und die andere Hand dazu benützt werden kann, z.B. das anzuschraubende Werkstück festzuhalten.The hand screwdriver according to the invention is e.g. When screwing horizontally, it is kept below its center of gravity and the line of action of the pressing hand is essentially flush with the screw blade, i.e. with the screw to be screwed in, so that even in unfavorable working positions, fatigue-free working with one hand is possible and the other hand can be used, e.g. to hold the workpiece to be screwed on.

Dies ist besonders wichtig beim Anschrauben von z.B. Gipskartonplatten, bei denen mit dem erfindungsgemäßen Hand-Schraubgerät ein absolut rechtwinkliges Eindrehen der Schrauben nötig und möglich ist. Dabei ist gewährleistet, daß die Schraubenköpfe die Deckkartonschicht nicht durchbrechen oder überstehen.This is particularly important when screwing on e.g. Gypsum plasterboard, in which an absolutely right-angled screwing in of the screws is necessary and possible with the hand screwing device according to the invention. This ensures that the screw heads do not break through or protrude from the cover cardboard layer.

Bei dem erfindungsgemäßen Hand-Schraubgerät mit Getriebe ist also der Antriebsmotor gegenüber der Achse der Schraubklinge um den Getriebeabstand hochgesetzt, wobei der Handgriff im wesentlichen im Bereich des Getriebes angeordnet ist und sich bis in die unmittelbare Nähe der Achse der Schraubklinge erstreckt, sodaß die haltende Hand in etwa mit der Schraubklinge fluchtet.In the hand-held screwdriver with gear according to the invention, the drive motor is thus raised by the gear spacing with respect to the axis of the screw blade, the handle being arranged essentially in the area of the gear and extending into the immediate vicinity of the axis of the screw blade, so that the holding hand roughly aligned with the screw blade.

Zum ermüdungsfreien Aus- und Einschalten des Schraubgeräts ist eine Schaltleiste vorgesehen, mit der es möglich ist, den Schalter ohne Zwangshaltung in jeder Arbeitsposition bedienen zu können.A switching strip is provided for fatigue-free switching on and off of the screwing device, with which it is possible to operate the switch in any working position without forced holding.

Beim erfindungsgemäßen Hand-Schraubgerät sind für das Magazin zwei gegeneinander versetzte Befestigungspositionen vorgesehen. Damit ist es möglich, das Schraubgerät den verschiedensten Anwendungen anzupassen, eine einwandfreie Sicht auf die Schraubstelle zu ermöglichen und bei starkem, lang anhaltendem Axialdruck, z.B. bei Bohrschrauben, einen Griffwulst am Führungsvorsatz für die zweite Hand zur Druckunterstützung anzubringen.In the hand-held screwdriver according to the invention, two mutually offset fastening positions are provided for the magazine. This makes it possible to adapt the screwdriver to a wide variety of applications, to allow a perfect view of the screwing point and, in the case of strong, long-lasting axial pressure, e.g. For self-drilling screws, attach a grip bead on the guide attachment for the second hand to support pressure.

Es ist außerdem möglich, die Schraubeinheit gegenüber dem Antriebsmotor ohne Werkzeugeinsatz zu verdrehen, sodaß bei verschiedenen Arbeitspositionen immer die günstigste Griffposition gewährleistet ist.It is also possible to turn the screw unit relative to the drive motor without using a tool, so that the most favorable grip position is always guaranteed in different working positions.

Zwischen Antriebseinheit und Führungsvorsatz kann eine Verlängerungsvorrichtung vorgesehen sein, mit der es möglich ist, das Schraubgerät auch bei Schraubarbeiten an der Decke oder am Fußboden bequem zu bedienen.An extension device can be provided between the drive unit and the guide attachment, with which it is possible to operate the screwing device comfortably even when screwing on the ceiling or on the floor.

Beim erfindungsgemäßen Hand-Schraubgerät ist es ohne weiteres möglich, verschiedene Schraubeinheiten mit demselben Antriebsmotor zu verbinden oder diese mit steckbaren Vorsätzen zu versehen, mit denen einzelne Schrauben eingeschraubt werden können.In the hand-held screwdriver according to the invention, it is readily possible to connect different screwing units to the same drive motor or to provide them with plug-in attachments with which individual screws can be screwed in.

Im folgenden sind Ausführungsbeispiele der Erfindung unter Bezugnahme auf die Zeichnungen näher beschrieben.Exemplary embodiments of the invention are described in more detail below with reference to the drawings.

Es zeigen:

  • Fig. 1 Hand-Schraubgerät von der Seite
  • Fig. 2 Hand-Schraubgerät von oben
  • Fig. 3 Zweites Ausführungsbeispiel eines Hand-Schraubgeräts, von der Seite
  • Fig. 4 Zweites Ausführungsbeispiel eines Hand-Schraubgeräts, von oben.
Show it:
  • Fig. 1 hand-held screwdriver from the side
  • Fig. 2 hand-held screwdriver from above
  • Fig. 3 second embodiment of a hand-held screwdriver, from the side
  • Fig. 4 Second embodiment of a hand-held screwdriver, from above.

Das in den Fig. 1 und 2 dargestellte Schraubgerät 1 wird durch einen elektrischen Antriebsmotor 2 mit Achse 3-3 angetrieben. Er wirkt über ein Zahnradgetriebe 4 auf eine Schraubklinge 5 mit Achse 6-6, die in einem Führungsvorsatz 7 drehbar gelagert ist. Der Fühungsvorsatz 7 besteht aus einer schwenkbar mit dem Antriebsmotor 2 verbundenen Fühungshülse 8, in der ein Lagerkörper 9 axial verschiebbar gelagert ist.The screwing device 1 shown in FIGS. 1 and 2 is driven by an electric drive motor 2 with axis 3-3. It acts via a gear transmission 4 on a screw blade 5 with an axis 6-6, which is rotatably mounted in a guide attachment 7. The guide attachment 7 consists of a guide sleeve 8 pivotally connected to the drive motor 2, in which a bearing body 9 is axially displaceably mounted.

Am Lagerkörper 9 ist eine Zuführvorrichtung 10 für die Schrauben 11 angeordnet, die in ein Werkstück 12 eingeschraubt werden sollen.On the bearing body 9 there is a feed device 10 for the screws 11 which are to be screwed into a workpiece 12.

Die Schrauben 11 sind durch ein Kunststoffband 13 miteinander verbunden und als Rolle in einem Magazin 14 gespeichert, das an einer Befestigungsfläche 15 der Führungshülse 8 befestigt ist.The screws 11 are connected to one another by a plastic band 13 and stored as a roller in a magazine 14 which is fastened to a fastening surface 15 of the guide sleeve 8.

Führungsvorsatz 7 mit Führungshülse 8 und Lagerkörper 9 sowie Magazin 14 sollen zusammen als Schraubeinheit 16 bezeichnet werden.Guide attachment 7 with guide sleeve 8 and bearing body 9 and magazine 14 are to be referred to together as a screw unit 16.

Mit dem Antriebsmotor 2 ist im Bereich von Zahnradgetriebe 4 ein im wesentlichen sich senkrecht zur Motorachse 3-3 erstreckender Handgriff 17 verbunden, wobei sich der Übergangsbereich 18 zwischen Antriebsmotor 2 und Handgriff 17 sich bis in die unmittelbare Nähe der verlängert gedachten Achse 6-6 der Schraubklinge 5 erstreckt.With the drive motor 2 in the area of gear 4 a substantially perpendicular to the motor axis 3-3 extending handle 17 is connected, the transition region 18 between the drive motor 2 and handle 17 extending into the immediate vicinity of the elongated axis 6-6 Screw blade 5 extends.

Am Handgriff 17 ist eine Schaltleiste 19 schwenkbar angeordnet, mit dem der Antriebsmotor 2 ein- und ausgeschaltet werden kann.A switching bar 19 is pivotally arranged on the handle 17, with which the drive motor 2 can be switched on and off.

Die Fig. 3 und 4 zeigen ein zweites Ausführungsbeispiel des Hand-Schraubgeräts, bei dem das Magazin 14 an einer zweiten Befestigungsfläche 20 der Führungshülse 8 über einen Winkel 21 befestigt ist. Damit ist es möglich, an der ersten Befestigungsfläche 15 der Führungshülse 8 einen Griffwulst 22 anzubringen, sodaß das Schraubgerät in bestimmten Anwendungsfällen auch mit der zweiten Hand gehalten werden kann.3 and 4 show a second embodiment of the hand-held screwdriver, in which the magazine 14 is fastened to a second fastening surface 20 of the guide sleeve 8 via an angle 21. This makes it possible to attach a grip bead 22 to the first fastening surface 15 of the guide sleeve 8, so that the screwing device can also be held with the second hand in certain applications.

Claims (7)

  1. A hand screwdriver unit (1) having a drive motor (2) to which a screwdriver blade (5) disposed parallel to the motor axis (3-3) is connected via a gear unit (4), having a screw unit (16) which is connected to said drive motor (2) and which has a guidance projection (7) with a feeder means (10) for the screws (11) stored inside a magazine (14), and having a handle (17) attached to the motor housing and substantially vertical to said motor axis (3-3), characterised in that said drive motor (2) and said screw unit (16) extend from said handle (17) in substantially opposing directions, such that said handle (17) is connected to said screwdriver unit (1) in the vicinity of the centre of gravity of said unit, wherein the axis (6-6) of said screwdriver blade (5) is angled in relation to said motor axis (3-3) in the direction of said handle (17), and wherein a transitional area (18) facing away from said screwdriver blade (5) and between said drive motor (2) and said handle (7) extends up to the immediate vicinity of said axis (6-6) of said screwdriver blade (5).
  2. A hand screwdriver unit according to Claim 1, characterised in that a toothed gear unit (4) is provided between said drive motor (2) and said screwdriver blade (5), and wherein said handle (17) is disposed substantially in the vicinity of said gear unit (4).
  3. A hand screwdriver unit according to one of Claims 1 to 2, characterised in that a switching bar (19) is pivotably mounted on said handle (17) for operating the switch for said drive motor (2).
  4. A hand screwdriver unit according to one of Claims 1 to 3, characterised in that said screw unit (16) is pivotably mounted on said drive motor (2).
  5. A hand screwdriver unit according to one of Claims 1 to 4, characterised in that said guidance projection (7) has at least two attachment surfaces (15, 20) offset in relation to one another for attachment of said magazine (14).
  6. A hand screwdriver unit according to one of Claims 1 to 5, characterised in that a beaded grip (22) is attachable to said guide projection (7).
  7. A hand screwdriver unit according to one of Claims 1 to 6, characterised in that an extension means is attachable between said drive motor (2) and said guide projection (7).
EP91111899A 1990-07-28 1991-07-17 Hand power screwdriver Expired - Lifetime EP0469386B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT91111899T ATE102531T1 (en) 1990-07-28 1991-07-17 HAND WRENCH.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4024031A DE4024031A1 (en) 1990-07-28 1990-07-28 HAND SCREW DEVICE
DE4024031 1990-07-28

Publications (2)

Publication Number Publication Date
EP0469386A1 EP0469386A1 (en) 1992-02-05
EP0469386B1 true EP0469386B1 (en) 1994-03-09

Family

ID=6411214

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91111899A Expired - Lifetime EP0469386B1 (en) 1990-07-28 1991-07-17 Hand power screwdriver

Country Status (7)

Country Link
US (1) US5109738A (en)
EP (1) EP0469386B1 (en)
JP (1) JP2541713B2 (en)
AT (1) ATE102531T1 (en)
CA (1) CA2048007C (en)
DE (2) DE4024031A1 (en)
GB (1) GB9116344D0 (en)

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DE9412563U1 (en) * 1994-08-04 1994-11-17 Schmitz, Hermann, 47051 Duisburg Tool for screwing threaded wire
SE9502144L (en) * 1995-06-13 1996-12-14 Ergonomi Design Gruppen Ab Portable screwdriver or nut
AU728305B2 (en) * 1995-12-22 2001-01-04 Simpson Strong-Tie Company, Inc. Hand held power tool
US5890405A (en) * 1996-09-11 1999-04-06 Becker; Burkhard Automated screw driving device
JPH10249750A (en) * 1997-03-17 1998-09-22 Muro Corp:Kk Continuously machine screw fastening machine
US6186035B1 (en) * 1997-09-12 2001-02-13 Stanley Fastening Systems, L.P. Power-operated screw driving device
US5988026A (en) * 1997-12-03 1999-11-23 Senco Products, Inc. Screw feed and driver for a screw driving tool
US6085616A (en) * 1998-08-26 2000-07-11 Habermehl; G. Lyle Screwdriver for joining metal framing
US6813977B2 (en) * 2001-06-11 2004-11-09 Davicorp Inc. Screw gun
US7134367B2 (en) * 2002-12-09 2006-11-14 Milwaukee Electric Tool Corporation Fastener feeding system
US20050013680A1 (en) * 2003-07-18 2005-01-20 Steve Karaga Screws and methods of driving a screw into a workpiece
US7032482B1 (en) 2003-10-31 2006-04-25 Senco Products, Inc. Tensioning device apparatus for a bottom feed screw driving tool for use with collated screws
US7082857B1 (en) 2003-10-31 2006-08-01 Senco Products, Inc. Sliding rail containment device for flexible collated screws used with a top feed screw driving tool
FR2869252B1 (en) * 2004-04-23 2007-07-13 Euraltech Ti Sa PRINCIPLE OF STATIC EQUILIBRIAGE INDIFFERENT TO A TORQUE TORQUE TRANSMISSION EXTENSION FOR COMPLIANCE OF THE ELEMENT FITTING AT ITS END
US20050279517A1 (en) * 2004-06-21 2005-12-22 Hoffman William H Screw driving apparatus with attachable and detachable nose sub-assembly for use with single-feed screws or for use with automatic-feed collated screws
US7331406B2 (en) * 2004-06-21 2008-02-19 Duraspin Products Llc Apparatus for controlling a fastener driving tool, with user-adjustable torque limiting control
WO2006132684A2 (en) 2005-02-25 2006-12-14 Duraspin Products Llc Portable screw driving tool with collapsible front end
US8348116B2 (en) * 2010-12-06 2013-01-08 Xu Jun-Xiu Nail gun adaptable to nails of different length
DE102015210140A1 (en) 2015-06-02 2016-12-08 Robert Bosch Gmbh Industrial device with projection keyboard
US10220497B2 (en) 2016-02-19 2019-03-05 National Nail Corp. Tension fed fastener installation tool and related methods of use

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Also Published As

Publication number Publication date
DE59101149D1 (en) 1994-04-14
CA2048007C (en) 1995-04-04
JP2541713B2 (en) 1996-10-09
EP0469386A1 (en) 1992-02-05
GB9116344D0 (en) 1991-09-11
DE4024031A1 (en) 1992-01-30
ATE102531T1 (en) 1994-03-15
US5109738A (en) 1992-05-05
JPH04226870A (en) 1992-08-17

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