EP1163980A2 - Hand tool - Google Patents

Hand tool Download PDF

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Publication number
EP1163980A2
EP1163980A2 EP01810548A EP01810548A EP1163980A2 EP 1163980 A2 EP1163980 A2 EP 1163980A2 EP 01810548 A EP01810548 A EP 01810548A EP 01810548 A EP01810548 A EP 01810548A EP 1163980 A2 EP1163980 A2 EP 1163980A2
Authority
EP
European Patent Office
Prior art keywords
switching position
hand tool
housing
tool spindle
spindle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP01810548A
Other languages
German (de)
French (fr)
Other versions
EP1163980A3 (en
EP1163980B1 (en
Inventor
Anton Neumaier
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 EP1163980A2 publication Critical patent/EP1163980A2/en
Publication of EP1163980A3 publication Critical patent/EP1163980A3/en
Application granted granted Critical
Publication of EP1163980B1 publication Critical patent/EP1163980B1/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
    • B25D—PERCUSSIVE TOOLS
    • B25D16/00—Portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D16/006—Mode changers; Mechanisms connected thereto
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2211/00—Details of portable percussive tools with electromotor or other motor drive
    • B25D2211/003—Crossed drill and motor spindles
    • 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
    • B25D2211/06—Means for driving the impulse member
    • B25D2211/068—Crank-actuated impulse-driving mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D2216/0007—Details of percussion or rotation modes
    • B25D2216/0046—Preventing rotation

Definitions

  • the invention relates to an at least partially rotating hand tool device such as one Combination hammer with more than two different operating modes.
  • Combined hammers have one necessary to generate the rotating movement
  • the rotary drive is operated by the tool holder Tool spindle separated and this rotatably with the housing of the combined hand tool connected.
  • a combined hand tool device has a along the tool spindle sliding and rotatable shift sleeve with the tool spindle, which can be moved lengthways via a mode selector switch on one end face into a rotary drive pinion or engages on the other end face in a housing pinion, the latter being the Tool spindle locked in rotation against the housing.
  • a rotary hammer has to switch the tool spindle speed one that can be moved perpendicular to the tool spindle using a mode selector switch Coupling slide on, which optionally via an engagement cam designed as a pin two differently graduated gear pinions rotatably with the one in a tool spindle pinion engaging bevel pinion connects.
  • a non-rotatable locking of the tool spindle against the housing is not used for rotary hammers.
  • the object of the invention is the simple implementation of a Hand tool device with more than two switchable operating modes.
  • the tool spindle in addition to a second operating mode in another, through which the mode selector switch, clutch slider of the combined hand tool switchable, third operating mode, the tool spindle rotatably with respect to the Locked the housing by in this switching position the engagement cam with housing-side, advantageous sectoral, recesses is engaged.
  • the tool spindle is preferably freely rotatable, by the engagement cam being rotatable in a free space in this switching position.
  • the fourth switching position is preferably between the second and the third switching position arranged.
  • the first and the second switching position are rotating operating modes assigned different speed.
  • the handheld power tool switchable third operating mode 2b becomes the tool spindle 3 locked in rotation with respect to a housing 5, in that in the third operating mode 2b assigned switching position a switching pin designed as an engagement cam 6 with a housing-side sectoral recess 7 is non-rotatably engaged.
  • a switching position assigned to a fourth operating mode 2c is the rotating engagement cam 6 surrounding free space 8 is formed.
  • the clutch slide 4 is perpendicular to Tool spindle 3 arranged and rotatably with a in a tool spindle pinion 9th engaging bevel gear 10 connected.
  • the clutch slide 4 rotatably and offset axially movably connected with stepped gear pinions 11, which a different speed in the first and the second rotating operating modes assigned.

Abstract

A coupling slide-piece (4) is at right angles to a tool-spindle (3) and is fixed to a conical pinion (10) fitting into a spindle pinion (9) belonging to the tool spindle. The coupling slide piece is connected to at least one engaging cam (6) and is axially movably joined to gear pinions (11). In a third method of operation, the spindle is locked in relation to a housing (5), with the engaging cam engaging with cavities (7) on the housing side.

Description

Die Erfindung bezeichnet ein zumindest teilweise drehendes Handwerkzeuggerät wie einen Kombihammer mit mehr als zwei unterschiedlichen Betriebsmodi.The invention relates to an at least partially rotating hand tool device such as one Combination hammer with more than two different operating modes.

Kombihämmer weisen neben einem zur Erzeugung der drehenden Bewegung notwendigen Drehantrieb noch einen weiteren Antrieb auf, bspw. einen Schlagantrieb.Combined hammers have one necessary to generate the rotating movement Rotary drive still another drive, for example. A percussion drive.

In einer der Betriebsmodi wird der Drehantrieb von der das Werkzeug aufnehmenden Werkzeugspindel getrennt und diese drehfest mit dem Gehäuse des kombinierten Handwerkzeuggerätes verbunden.In one of the operating modes, the rotary drive is operated by the tool holder Tool spindle separated and this rotatably with the housing of the combined hand tool connected.

Nach der DE2728961 weist ein kombiniertes Handwerkzeuggerät eine längs der Werkzeugspindel verschiebbare und drehfest mit der Werkzeugspindel verschiebbare Schaltmuffe auf, welche längs über einen Modenwahlschalter versetzbar an einer Stirnseite in ein Drehantriebsritzel oder an der anderen Stirnseite in ein Gehäuseritzel eingreift, wobei letzteres die Werkzeugspindel drehfest gegen das Gehäuse arretiert.According to DE2728961, a combined hand tool device has a along the tool spindle sliding and rotatable shift sleeve with the tool spindle, which can be moved lengthways via a mode selector switch on one end face into a rotary drive pinion or engages on the other end face in a housing pinion, the latter being the Tool spindle locked in rotation against the housing.

Nach der DE1938660 weist ein Bohrhammer zur Umschaltung der Werkzeugspindeldrehzahl einen senkrecht zur Werkzeugspindel über einen Modenwahlschalter versetzbaren Kupplungsschieber auf, welcher über eine als Stift ausgebildete Eingriffsnocke wahlweise zwei verschieden abgestufte Getrieberitzel drehfest mit dem in ein Werkzeugspindelritzel eingreifendes Kegelritzel verbindet. Eine drehfeste Arretierung der Werkzeugspindel gegen das Gehäuse findet bei Bohrhämmern keine Anwendung.According to DE1938660, a rotary hammer has to switch the tool spindle speed one that can be moved perpendicular to the tool spindle using a mode selector switch Coupling slide on, which optionally via an engagement cam designed as a pin two differently graduated gear pinions rotatably with the one in a tool spindle pinion engaging bevel pinion connects. A non-rotatable locking of the tool spindle against the housing is not used for rotary hammers.

Die Aufgabe der Erfindung besteht in der einfachen Realisierung eines Handwerkzeuggerätes mit mehr als zwei schaltbaren Betriebsmodi.The object of the invention is the simple implementation of a Hand tool device with more than two switchable operating modes.

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 wird neben einem zweiten Betriebsmode in einem weiteren, über den, durch den Modenwahlschalter versetzbaren, Kupplungsschieber des kombinierten Handwerkzeuggerätes schaltbaren, dritten Betriebsmode die Werkzeugspindel drehfest bezüglich des Gehäuses arretiert, indem in dieser Schaltposition die Eingriffsnocke mit gehäuseseitigen, vorteilhaft sektoriellen, Ausnehmungen im Eingriff steht.In essence, in addition to a second operating mode in another, through which the mode selector switch, clutch slider of the combined hand tool switchable, third operating mode, the tool spindle rotatably with respect to the Locked the housing by in this switching position the engagement cam with housing-side, advantageous sectoral, recesses is engaged.

Vorzugsweise ist in einem weiteren vierten Betriebsmode die Werkzeugspindel frei drehbar, indem in dieser Schaltposition die Eingriffsnocke in einem Freiraum drehbar ist.In a further fourth operating mode, the tool spindle is preferably freely rotatable, by the engagement cam being rotatable in a free space in this switching position.

Vorzugsweise ist die vierte Schaltposition zwischen der zweiten und der dritten Schaltposition angeordnet.The fourth switching position is preferably between the second and the third switching position arranged.

Vorzugsweise sind die erste und die zweite Schaltposition drehenden Betriebsmodi mit unterschiedlicher Drehzahl zugeordnet.Preferably, the first and the second switching position are rotating operating modes assigned different speed.

Die Erfindung wird bezüglich eines vorteilhaften Ausführungsbeispiels näher erläutert mit:

  • Fig. 1 als Getriebeausschnitt eines Handwerkzeuggerätes
  • Fig. 2 als Teilschnitt im Getriebeausschnitt.
    • The invention is explained in more detail with respect to an advantageous exemplary embodiment with:
  • Fig. 1 as a gear cutout of a hand tool
  • Fig. 2 as a partial section in the gear section.

    • Nach Fig. 1 weist ein Getriebe 1 eines nicht vollständig dargestellten Handwerkzeuggerätes mit verschiedenen Betriebsmodi 2 zur teilweisen Erzeugung einer drehenden und einer schlagenden Bewegung einer Werkzeugspindel 3 neben einem zweiten Betriebsmode 2a einen dritten Betriebsmode 2b auf. In diesem weiteren, über einen, durch einen nicht dargestellten Modenwahlschalter versetzbaren, Kupplungsschieber 4 des kombinierten Handwerkzeuggerätes schaltbaren, dritten Betriebsmode 2b wird die Werkzeugspindel 3 drehfest bezüglich eines Gehäuses 5 arretiert, indem in der dem dritten Betriebsmode 2b zugeordneten Schaltposition ein als Eingriffsnocke 6 ausgebildeter Schaltstift mit einer gehäuseseitigen sektoriellen Ausnehmung 7 formschlüssig drehfest im Eingriff steht. In einem zwischen dem zweiten Betriebsmode 2a und dem dritten Betriebsmode 2b ist in einer einem vierten Betriebsmode 2c zugeordneten Schaltposition ein die drehende Eingriffsnocke 6 umgebender Freiraum 8 ausgebildet. Der Kupplungsschieber 4 ist senkrecht zur Werkzeugspindel 3 angeordnet und drehfest mit einem in ein Werkzeugspindelritzel 9 eingreifendes Kegelritzel 10 verbunden. Über die Eingriffsnocke 6 ist der Kupplungsschieber 4 drehfest und versetzt axial beweglich mit abgestuften Getrieberitzeln 11 verbunden, denen in dem ersten und dem zweiten drehenden Betriebsmodi ein unterschiedlicher Drehzahl zugeordnet ist. 1 has a gear 1 of a hand tool device, not shown in full with different operating modes 2 for the partial generation of a rotating and one beating movement of a tool spindle 3 in addition to a second operating mode 2a a third operating mode 2b. In this further, about one, through one not shown mode selector switchable, clutch slide 4 of the combined The handheld power tool switchable third operating mode 2b becomes the tool spindle 3 locked in rotation with respect to a housing 5, in that in the third operating mode 2b assigned switching position a switching pin designed as an engagement cam 6 with a housing-side sectoral recess 7 is non-rotatably engaged. In one between the second operating mode 2a and the third operating mode 2b is in one a switching position assigned to a fourth operating mode 2c is the rotating engagement cam 6 surrounding free space 8 is formed. The clutch slide 4 is perpendicular to Tool spindle 3 arranged and rotatably with a in a tool spindle pinion 9th engaging bevel gear 10 connected. About the engagement cam 6 is the clutch slide 4 rotatably and offset axially movably connected with stepped gear pinions 11, which a different speed in the first and the second rotating operating modes assigned.

    Nach Fig. 2 als Teilschnitt II - II aus Fig. 1 ist die formschlüssige sektorielle Ausnehmung 7 diametral gegenüberliegend in einer den Kupplungsschieber 4 beinhaltenden verschleissfesten Arretierungshülse 12 ausgespart, welche formschlüssig im Gehäuse 5 befestigt ist.2 as a partial section II - II from FIG. 1 is the positive sectoral recess 7 diametrically opposite in a wear-resistant containing the clutch slide 4 Locking sleeve 12 recessed, which is positively attached in the housing 5.

    Claims (6)

    Handwerkzeuggerät mit zumindest zwei schaltbaren Betriebsmodi (2) mit einem senkrecht zu einer Werkzeugspindel (3) angeordneten Kupplungsschieber (4), welcher drehfest mit einem in ein Werkzeugspindelritzel (9) der Werkzeugspindel (3) eingreifendes Kegelritzel (10) sowie mit zumindest einer Eingriffsnocke (6) drehfest und versetzbar axial beweglich mit Getrieberitzeln (11) verbunden ist, dadurch gekennzeichnet, dass in einem weiteren, über den Kupplungsschieber (4) schaltbaren, dritten Betriebsmode (2b) die Werkzeugspindel (3) drehfest bezüglich eines Gehäuses (5) arretiert ist, indem in dieser Schaltposition die Eingriffsnocke (6) mit gehäuseseitigen Ausnehmungen (7) im Eingriff steht.Hand tool with at least two switchable operating modes (2) with a coupling slide (4) arranged perpendicular to a tool spindle (3), which rotatably with a bevel pinion (10) engaging in a tool spindle pinion (9) of the tool spindle (3) and with at least one engagement cam ( 6) is non-rotatably and displaceably axially movably connected to gear pinions (11), characterized in that in a further third operating mode (2b) which can be switched via the clutch slide (4), the tool spindle (3) is locked in a rotationally fixed manner with respect to a housing (5) in that in this switching position the engagement cam (6) engages with recesses (7) on the housing. Handwerkzeuggerät nach Anspruch 1, dadurch gekennzeichnet, dass in einem weiteren vierten Betriebsmode (2c) die Werkzeugspindel (3) frei drehbar ist, indem in dieser Schaltposition die Eingriffsnocke (6) in einem Freiraum (8) drehbar ist.Hand tool according to claim 1, characterized in that in a further fourth operating mode (2c) the tool spindle (3) can be freely rotated by the engagement cam (6) being rotatable in a free space (8) in this switching position. Handwerkzeuggerät nach Anspruch 2, dadurch gekennzeichnet, dass die vierte Schaltposition (2c) zwischen einer zweiten Schaltposition (2a) und der dritten Schaltposition (2b) angeordnet ist.Hand tool according to claim 2, characterized in that the fourth switching position (2c) is arranged between a second switching position (2a) and the third switching position (2b). Handwerkzeuggerät nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die erste und die zweite Schaltposition (2a) drehenden Betriebsmodi mit unterschiedlicher Drehzahl zugeordnet sind.Hand tool according to one of the preceding claims, characterized in that the first and the second switching position (2a) are assigned to rotating operating modes with different speeds. Handwerkzeuggerät nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die gehäuseseitigen Ausnehmungen (7) in einer gehäusefesten Arretierungshülse (12) ausgebildet sind.Hand tool according to one of the preceding claims, characterized in that the recesses (7) on the housing side are formed in a locking sleeve (12) fixed to the housing. Handwerkzeuggerät nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die schaltbaren Betriebsmodi (2) durch einen einzigen, den Kupplungsschieber (4) axial versetzenden, Modenwahlschalter schaltbar sind.Hand tool according to one of the preceding claims, characterized in that the switchable operating modes (2) can be switched by a single mode selector switch which axially displaces the coupling slide (4).
    EP01810548A 2000-06-16 2001-06-07 Hand tool Expired - Lifetime EP1163980B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE10029728 2000-06-16
    DE10029728A DE10029728A1 (en) 2000-06-16 2000-06-16 Hand tool

    Publications (3)

    Publication Number Publication Date
    EP1163980A2 true EP1163980A2 (en) 2001-12-19
    EP1163980A3 EP1163980A3 (en) 2003-10-22
    EP1163980B1 EP1163980B1 (en) 2005-11-23

    Family

    ID=7645985

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP01810548A Expired - Lifetime EP1163980B1 (en) 2000-06-16 2001-06-07 Hand tool

    Country Status (6)

    Country Link
    US (1) US6478095B2 (en)
    EP (1) EP1163980B1 (en)
    JP (1) JP4920833B2 (en)
    KR (1) KR100735592B1 (en)
    CN (1) CN1186172C (en)
    DE (2) DE10029728A1 (en)

    Cited By (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    WO2009156006A1 (en) * 2008-06-24 2009-12-30 Robert Bosch Gmbh Clutch device for a power tool and power tool
    DE102008040031A1 (en) 2008-06-30 2009-12-31 Robert Bosch Gmbh Multi-speed transmission device and machine tool

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    Publication number Priority date Publication date Assignee Title
    DE10057139A1 (en) * 2000-11-17 2002-05-23 Hilti Ag Electric hand tool with safety clutch
    GB0214772D0 (en) * 2002-06-26 2002-08-07 Black & Decker Inc Hammer
    JP3843914B2 (en) * 2002-08-27 2006-11-08 松下電工株式会社 Hammer drill
    GB2419170B (en) * 2002-09-13 2006-12-06 Black & Decker Inc Rotary tool having overload clutch with three modes of operation
    GB0311045D0 (en) * 2003-05-14 2003-06-18 Black & Decker Inc Rotary hammer
    DE102004025951A1 (en) * 2004-05-27 2005-12-22 Robert Bosch Gmbh Hand tool, in particular drill and / or percussion hammer
    EP1674743B1 (en) * 2004-12-23 2014-01-22 Black & Decker Inc. Drive mechanism for a power tool
    EP1674207B1 (en) * 2004-12-23 2008-12-10 BLACK & DECKER INC. Power tool
    US20060213675A1 (en) * 2005-03-24 2006-09-28 Whitmire Jason P Combination drill
    GB2427006A (en) * 2005-06-10 2006-12-13 Black & Decker Inc Overload clutch with two predetermined torque levels
    US7410007B2 (en) * 2005-09-13 2008-08-12 Eastway Fair Company Limited Impact rotary tool with drill mode
    JP4686372B2 (en) * 2006-02-01 2011-05-25 株式会社マキタ Impact type work tool
    DE102006009922A1 (en) * 2006-03-03 2007-09-06 Robert Bosch Gmbh Switchable coupling for an electric hand tool
    EP2130651B1 (en) * 2007-03-26 2014-11-26 Makita Corporation Impact tool
    JP4981506B2 (en) * 2007-04-12 2012-07-25 株式会社マキタ Hammer drill
    JP5395620B2 (en) * 2009-11-02 2014-01-22 株式会社マキタ Impact tool
    CN101767327B (en) * 2010-01-21 2011-05-25 浙江海王电器有限公司 Heavy-duty double-button multifunction electric hammer
    CN102371573A (en) * 2010-08-10 2012-03-14 南京德朔实业有限公司 Electric tool
    US9630307B2 (en) 2012-08-22 2017-04-25 Milwaukee Electric Tool Corporation Rotary hammer
    EP4219082A1 (en) 2017-07-31 2023-08-02 Milwaukee Electric Tool Corporation Rotary power tool
    CN108673425B (en) * 2018-06-28 2023-11-10 常州彤扬电气制造有限公司 Multifunctional electric tool with double output shafts

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    DE1938660A1 (en) * 1969-07-30 1971-02-11 Metabowerke Kg Hammer drill
    DE4205840A1 (en) * 1992-02-26 1993-09-02 Kress Elektrik Gmbh & Co Spindle lock for hammer drill with chisel function - is effected by bringing sliding gear cluster of spindle drive transmission into mesh with teeth of locking segment fixed to housing
    US6015017A (en) * 1997-04-18 2000-01-18 Black & Decker Inc. Rotary hammer

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    JPS54120503A (en) * 1978-03-11 1979-09-19 Nippon Telegr & Teleph Corp <Ntt> Coding system for push-button dial signal
    JPS5993887A (en) * 1982-11-19 1984-05-30 Asahi Glass Co Ltd Treatment of pickling solution containing copper ion
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    Publication number Priority date Publication date Assignee Title
    DE1938660A1 (en) * 1969-07-30 1971-02-11 Metabowerke Kg Hammer drill
    DE4205840A1 (en) * 1992-02-26 1993-09-02 Kress Elektrik Gmbh & Co Spindle lock for hammer drill with chisel function - is effected by bringing sliding gear cluster of spindle drive transmission into mesh with teeth of locking segment fixed to housing
    US6015017A (en) * 1997-04-18 2000-01-18 Black & Decker Inc. Rotary hammer

    Cited By (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    WO2009156006A1 (en) * 2008-06-24 2009-12-30 Robert Bosch Gmbh Clutch device for a power tool and power tool
    DE102008040031A1 (en) 2008-06-30 2009-12-31 Robert Bosch Gmbh Multi-speed transmission device and machine tool
    US8739893B2 (en) 2008-06-30 2014-06-03 Robert Bosch Gmbh Multi-gear transmission device and power tool

    Also Published As

    Publication number Publication date
    KR100735592B1 (en) 2007-07-04
    EP1163980A3 (en) 2003-10-22
    CN1329973A (en) 2002-01-09
    DE10029728A1 (en) 2001-12-20
    US6478095B2 (en) 2002-11-12
    DE50108137D1 (en) 2005-12-29
    US20010052417A1 (en) 2001-12-20
    KR20010113463A (en) 2001-12-28
    EP1163980B1 (en) 2005-11-23
    CN1186172C (en) 2005-01-26
    JP2002028878A (en) 2002-01-29
    JP4920833B2 (en) 2012-04-18

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