EP1369207A1 - Mode selection switch for electric hand tool - Google Patents

Mode selection switch for electric hand tool Download PDF

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Publication number
EP1369207A1
EP1369207A1 EP03405384A EP03405384A EP1369207A1 EP 1369207 A1 EP1369207 A1 EP 1369207A1 EP 03405384 A EP03405384 A EP 03405384A EP 03405384 A EP03405384 A EP 03405384A EP 1369207 A1 EP1369207 A1 EP 1369207A1
Authority
EP
European Patent Office
Prior art keywords
lubricant
electric hand
assembly
lubricated
tight
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
EP03405384A
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German (de)
French (fr)
Other versions
EP1369207B1 (en
Inventor
Peter Gerold
Helmut Burger
Wolfgang Schreiber
Jochen Erhardt
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
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Hilti AG
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Filing date
Publication date
Application filed by Hilti AG filed Critical Hilti AG
Publication of EP1369207A1 publication Critical patent/EP1369207A1/en
Application granted granted Critical
Publication of EP1369207B1 publication Critical patent/EP1369207B1/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
    • 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
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/255—Switches
    • B25D2250/261—Means for locking an operative switch on

Definitions

  • the invention relates to a rotationally displaceable mode selector switch for at least one partially rotating and / or striking combined electric hand machine tool, especially a combination hammer.
  • combi hammers have a manually rotatable one Mode selector switch, some or all of the modes: «rotary drilling», «impact drilling», "Chisels”, “Chisel positioning” selected and the gear or Striking mechanism assembly combined mechanically switched accordingly.
  • the combination Several clutches are made via a shift plate in the lubricated interior of the Gear and impact mechanism assembly.
  • DE4000822 is a rotatable mode selector switch with an eccentric pin Lubricant-tight between a gear assembly filled with grease and the arranged dry exterior. All switching functions take place inside the gearbox and Percussion mechanism.
  • some operating modes are further electrical and mechanical Special functions assigned, which via a, between the gear assembly and the Outer housing arranged and from the mode selector switch with an eccentric pin displaceable, shift linkage engages in the motor switch and with an end Magnets via a Hall sensor control electronics of the drive motor in the Lubricant-free motor housing, which affects the motor switch when chiseling locked and the engine speed increased. It's just a lubricated gear and Striking mechanism assembly available.
  • the task is to implement a mode switch with others Special functions for a combined electric hand machine tool with several switchable clutches in at least two differently lubricated, Lubricant-tight gear and impact mechanism assemblies.
  • a combined electric hand machine tool preferably has one rotatable mode selector switch with further, via a between a lubricated Assembly arranged with a clutch and the outer housing and from Mode selector switchable shift linkage, switchable special functions, whereby in at least two separately lubricant-tight assemblies each have at least one switchable There is a clutch, which in each case has an outwardly extending Lubricant-tight actuators can be moved.
  • the actuating means is advantageous as a rotationally displaceable in a module housing, Lubricant-tight rotary actuator designed, for example. With O-rings is technologically easy to seal.
  • the rotary actuation means advantageously has an eccentrically arranged eccentric pin on which can be guided into a further advantageously elongated opening of the shift linkage engages, whereby a movement of the shift linkage in a rotation of the Rotary actuator is transformable.
  • a first lubricant-tight assembly as grease-lubricated is advantageous Gear assembly and a second lubricant-tight assembly as oil-lubricated Percussion mechanism assembly designed, whereby an optimal wear protection is achieved.
  • the special functions conveyed mechanically via the shift linkage are advantageous Motor switch lockable and / or electronically the motor speed can be changed, whereby the Utility of the combined electric hand machine tool is increased.
  • FIG. 1 or FIG. 2 a combined, only partially shown, at least partially rotating and / or striking electric hand tool one rotatable mode selector switch 1 on.
  • the mode selector switch 1 is between one Lubricated assembly 2a with a clutch 3a and an outer housing 4th arranged shift linkage 5 displaceable.
  • each of the two separate lubricant tightness Assemblies 2a, 2b in the form of a grease-lubricated gear assembly and one Oil-lubricated hammer mechanism assembly is a switchable clutch 3a, 3b available, each of which is located outside of a module housing 7 extending actuating means 6a, 6b which are mounted in a lubricant-tight manner with O-rings 12a, 12b are rotatably displaceable in the module housing 7.
  • the actuating means 6a, 6b are with eccentrically arranged eccentric pin 8a, 8b, each in an opening of the Engage shift linkage 5 feasible, as well as engaging in the shift clutches 3a, 3b Control projections 13a, 13b formed.
  • the mode selector switch 1 Via the special functions of the mode selector switch 1 is mediated via the shift linkage 5 and a locking lever arrangement 15 mechanically Motor switch 9 lockable when switched on and electronically via a non-contact, in the form of a Hall switch controlled by a magnetic rocker 16 trained sensor switch 10 and engine electronics 11, the engine speed variable.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Portable Power Tools In General (AREA)
  • Drilling And Boring (AREA)

Abstract

The device has a mode selection switch (1) and additional special functions switchable by a switching rod (5) arranged between a lubricated unit (2a) with a switch coupling (3a) and the outer housing (4) that can be displaced by the mode selection switch. At least one switchable switch coupling (3a,b) is provided in at least two separately lubricant-sealed units (2a,b) and each can be displaced by an actuating arrangement (6a,b) extending outside and mounted so as to be sealed in respect of lubricant.

Description

Die Erfindung bezeichnet einen drehversetzbaren Modiwahlschalter für eine zumindest teilweise drehende und/oder schlagende kombinierten Elektrohandwerkzeugmaschine, insbesondere einen Kombihammer.The invention relates to a rotationally displaceable mode selector switch for at least one partially rotating and / or striking combined electric hand machine tool, especially a combination hammer.

Nach der DE10031050 werden bei Kombihammern über einen händisch drehversetzbaren Modiwahlschalter einige oder sämtliche der Modi: «Drehbohren», «Schlagbohren», «Meisseln», « Meissel-Positionieren» ausgewählt und die Getriebe- bzw. Schlagwerksbaugruppe entsprechend kombiniert mechanisch geschaltet. Die Kombination mehrerer Schaltkupplungen erfolgt über ein Schaltblech im geschmierten Innern der Getriebe- und Schlagwerksbaugruppe.According to DE10031050, combi hammers have a manually rotatable one Mode selector switch, some or all of the modes: «rotary drilling», «impact drilling», "Chisels", "Chisel positioning" selected and the gear or Striking mechanism assembly combined mechanically switched accordingly. The combination Several clutches are made via a shift plate in the lubricated interior of the Gear and impact mechanism assembly.

Nach der DE4000822 ist ein drehversetzbarer Modiwahlschalter mit einem Exzenterzapfen schmiermitteldicht zwischen einer mit Schmierfett gefüllten Getriebebaugruppe und dem trockenen Äusseren angeordnet. Alle Schaltfunktionen erfolgen im Innern der Getriebe- und Schlagwerksbaugruppe.According to DE4000822 is a rotatable mode selector switch with an eccentric pin Lubricant-tight between a gear assembly filled with grease and the arranged dry exterior. All switching functions take place inside the gearbox and Percussion mechanism.

Nach der DE19937767 sind einigen Betriebsmodi weitere elektrische und mechanische Sonderfunktionen zugeordnet, welche über ein, zwischen der Getriebebaugruppe und dem Aussengehäuse angeordnetes sowie vom Modiwahlschalter mit einem Exzenterzapfen versetzbares, Schaltgestänge in den Motorschalter eingreift sowie mit einem endseitigen Magneten über einen Hall-Sensor die Steuerelektronik des Antriebsmotors im schmierstofffreien Motorgehäuse beeinflusst, welche beim «Meisseln» den Motorschalter arretiert und die Motordrehzahl erhöht. Es ist nur eine geschmierte Getriebe- und Schlagwerksbaugruppe vorhanden.According to DE19937767, some operating modes are further electrical and mechanical Special functions assigned, which via a, between the gear assembly and the Outer housing arranged and from the mode selector switch with an eccentric pin displaceable, shift linkage engages in the motor switch and with an end Magnets via a Hall sensor control electronics of the drive motor in the Lubricant-free motor housing, which affects the motor switch when chiseling locked and the engine speed increased. It's just a lubricated gear and Striking mechanism assembly available.

Die Aufgabe besteht in der Realisierung eines Modiwahlschalters mit weiteren Sonderfunktionen für eine kombinierten Elektrohandwerkzeugmaschine mit mehreren schaltbaren Schaltkupplungen in zumindest zwei unterschiedlich geschmierten, schmiermitteldichten Getriebe- und Schlagwerksbaugruppen. The task is to implement a mode switch with others Special functions for a combined electric hand machine tool with several switchable clutches in at least two differently lubricated, Lubricant-tight gear and impact mechanism assemblies.

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 weist eine kombinierte Elektrohandwerkzeugmaschine einen vorzugsweise drehversetzbaren Modiwahlschalter mit weiteren, über ein zwischen einer geschmierten Baugruppe mit einer Schaltkupplung und dem Aussengehäuse angeordnetes sowie vom Modiwahlschalter versetzbares Schaltgestänge, schaltbaren Sonderfunktionen auf, wobei in zumindest zwei getrennt schmiermitteldichten Baugruppen jeweils zumindest eine schaltbare Schaltkupplung vorhanden ist, welche jeweils über ein sich nach ausserhalb erstreckendes, schmiermitteldicht gelagertes Betätigungsmittel versetzbar sind.In essence, a combined electric hand machine tool preferably has one rotatable mode selector switch with further, via a between a lubricated Assembly arranged with a clutch and the outer housing and from Mode selector switchable shift linkage, switchable special functions, whereby in at least two separately lubricant-tight assemblies each have at least one switchable There is a clutch, which in each case has an outwardly extending Lubricant-tight actuators can be moved.

Durch die zumindest zwei sich von einer geschmierten Baugruppe nach ausserhalb erstreckenden, schmiermitteldicht gelagerten Betätigungsmittel, welche beide vom Modiwahlschalter bzw. Schaltgestänge versetzbar sind, sind die in unterschiedlich, bspw. mit Öl und mit Fett geschmierten, Baugruppen angeordneten Schaltkupplungen von dem im ungeschmierten Zwischenraum angeordneten Schaltgestänge für Sonderfunktionen kombiniert schaltbar.Through the at least two out of a lubricated assembly extending, lubricant-tight actuators, both of which Mode selector switches or shift linkages can be moved, they are different, for example with Oil and grease lubricated, assemblies arranged by the clutch Unlubricated space arranged shift linkage for special functions combined switchable.

Vorteilhaft ist das Betätigungsmittel als in einem Baugruppengehäuse drehversetzbares, schmiermitteldicht gelagertes Drehbetätigungsmittel ausgebildet, welches bspw. mit O-Ringen technologisch einfach dichtbar ist.The actuating means is advantageous as a rotationally displaceable in a module housing, Lubricant-tight rotary actuator designed, for example. With O-rings is technologically easy to seal.

Vorteilhaft weist das Drehbetätigungsmittel einen exzentrisch angeordneten Exzenterzapfen auf, welcher in eine, weiter vorteilhaft längliche, Öffnung des Schaltgestänges führbar eingreift, wodurch eine Bewegung des Schaltgestänges in eine Drehung des Drehbetätigungsmittels transformierbar ist.The rotary actuation means advantageously has an eccentrically arranged eccentric pin on which can be guided into a further advantageously elongated opening of the shift linkage engages, whereby a movement of the shift linkage in a rotation of the Rotary actuator is transformable.

Vorteilhaft ist eine erste schmiermitteldichte Baugruppe als fettgeschmierte Getriebebaugruppe und eine zweite schmiermitteldichte Baugruppe als ölgeschmierte Schlagwerksbaugruppe ausgebildet, wodurch ein optimaler Verschleissschutz erzielt wird.A first lubricant-tight assembly as grease-lubricated is advantageous Gear assembly and a second lubricant-tight assembly as oil-lubricated Percussion mechanism assembly designed, whereby an optimal wear protection is achieved.

Vorteilhaft ist über die Sonderfunktionen vermittelt über das Schaltgestänge mechanisch ein Motorschalter arretierbar und/oder elektronisch die Motordrehzahl veränderbar, wodurch der Nutzwert der kombinierten Elektrohandwerkzeugmaschine gesteigert wird.The special functions conveyed mechanically via the shift linkage are advantageous Motor switch lockable and / or electronically the motor speed can be changed, whereby the Utility of the combined electric hand machine tool is increased.

Die Erfindung wird bezüglich eines vorteilhaften Ausführungsbeispiels näher erläutert mit:

Fig. 1
als kombinierte Elektrohandwerkzeugmaschine
Fig. 2
als Modiwahlschalter mit Sonderfunktionen
The invention is explained in more detail with respect to an advantageous exemplary embodiment with:
Fig. 1
as a combined electric hand machine tool
Fig. 2
as a mode selector switch with special functions

Nach Fig. 1 bzw. Fig. 2 weist eine jeweils nur teilweise dargestellte kombinierte, zumindest teilweise drehende und/oder schlagende Elektrohandwerkzeugmaschine einen drehversetzbaren Modiwahlschalter 1 auf. Mit dem Modiwahlschalter 1 ist ein zwischen einer geschmierten Baugruppe 2a mit einer Schaltkupplung 3a und einem Aussengehäuse 4 angeordnetes Schaltgestänge 5 versetzbar. In jeder der zwei getrennt schmiermitteldichten Baugruppen 2a, 2b in Form einer fettgeschmierten Getriebebaugruppe und einer ölgeschmierten Schlagwerksbaugruppe ist eine schaltbare Schaltkupplung 3a, 3b vorhanden, welche jeweils über ein sich nach ausserhalb einer Baugruppengehäuse 7 erstreckendes, mit O-Ringen 12a, 12b schmiermitteldicht gelagertes Betätigungsmittel 6a, 6b in dem Baugruppengehäuse 7 drehversetzbar sind. Die Betätigungsmittel 6a, 6b sind mit exzentrisch angeordneten Exzenterzapfen 8a, 8b, welche in je eine Öffnung des Schaltgestänges 5 führbar eingreifen, sowie mit in die Schaltkupplungen 3a, 3b eingreifende Steuervorsprünge 13a, 13b ausgebildet. Über die Sonderfunktionen des Modiwahlschalters 1 ist vermittelt über das Schaltgestänge 5 und eine Arretierhebelanordnung 15 mechanisch ein Motorschalter 9 im eingeschalteten Zustand arretierbar und elektronisch über einen berührungslosen, in Form eines von einer Magnetwippe 16 gesteuerten Hall-Schalters ausgebildeten, Sensorschalter 10 und eine Motorelektronik 11 die Motordrehzahl veränderbar.According to FIG. 1 or FIG. 2, a combined, only partially shown, at least partially rotating and / or striking electric hand tool one rotatable mode selector switch 1 on. With the mode selector switch 1 is between one Lubricated assembly 2a with a clutch 3a and an outer housing 4th arranged shift linkage 5 displaceable. In each of the two separate lubricant tightness Assemblies 2a, 2b in the form of a grease-lubricated gear assembly and one Oil-lubricated hammer mechanism assembly is a switchable clutch 3a, 3b available, each of which is located outside of a module housing 7 extending actuating means 6a, 6b which are mounted in a lubricant-tight manner with O-rings 12a, 12b are rotatably displaceable in the module housing 7. The actuating means 6a, 6b are with eccentrically arranged eccentric pin 8a, 8b, each in an opening of the Engage shift linkage 5 feasible, as well as engaging in the shift clutches 3a, 3b Control projections 13a, 13b formed. Via the special functions of the mode selector switch 1 is mediated via the shift linkage 5 and a locking lever arrangement 15 mechanically Motor switch 9 lockable when switched on and electronically via a non-contact, in the form of a Hall switch controlled by a magnetic rocker 16 trained sensor switch 10 and engine electronics 11, the engine speed variable.

Claims (5)

Kombinierte Elektrohandwerkzeugmaschine mit einem Modiwahlschalter (1) mit weiteren, über ein zwischen einer geschmierten Baugruppe (2a) mit einer Schaltkupplung (3a) und dem Aussengehäuse (4) angeordnetes sowie vom Modiwahlschalter (1) versetzbares Schaltgestänge (5), schaltbaren Sonderfunktionen, dadurch gekennzeichnet, dass in zumindest zwei getrennt schmiermitteldichten Baugruppen (2a, 2b) jeweils zumindest eine schaltbare Schaltkupplung (3a, 3b) vorhanden ist, welche jeweils über ein sich nach ausserhalb erstreckendes, schmiermitteldicht gelagertes Betätigungsmittel (6a, 6b) versetzbar sind.Combined electric hand tool machine having a Modiwahlschalter (1) with further, via a valve disposed between a lubricated assembly (2a) having a clutch (3a) and the outer housing (4) and from Modiwahlschalter (1) displaceable shift rod (5) switchable special functions, characterized that in at least two separately lubricant-tight assemblies (2a, 2b) there is at least one switchable clutch (3a, 3b), each of which can be displaced by means of an actuating means (6a, 6b) that extends to the outside and is sealed against lubricant. Elektrohandwerkzeugmaschine nach Anspruch 1, dadurch gekennzeichnet, dass das Betätigungsmittel (6a, 6b) als in einem Baugruppengehäuse (7) drehversetzbares, schmiermitteldicht gelagertes Drehbetätigungsmittel ausgebildet ist.Electric hand machine tool according to claim 1, characterized in that the actuating means (6a, 6b) is designed as a rotary actuating means which is rotatably displaceable in a component housing (7) and is mounted in a lubricant-tight manner. Elektrohandwerkzeugmaschine nach Anspruch 2, dadurch gekennzeichnet, dass das Drehbetätigungsmittel einen exzentrisch angeordneten Exzenterzapfen (8a, 8b) aufweist, welcher in eine, optional längliche, Öffnung des Schaltgestänges (5) führbar eingreift.Electric hand machine tool according to claim 2, characterized in that the rotary actuating means has an eccentrically arranged eccentric pin (8a, 8b) which engages in an, optionally elongated, opening of the shift linkage (5). Elektrohandwerkzeugmaschine nach Anspruch 1, dadurch gekennzeichnet, dass eine erste schmiermitteldichte Baugruppe (2a) als fettgeschmierte Getriebebaugruppe und eine zweite schmiermitteldichte Baugruppe (2b) als ölgeschmierte Schlagwerksbaugruppe ausgebildet ist.Electric hand machine tool according to claim 1, characterized in that a first lubricant-tight assembly (2a) is designed as a grease-lubricated gear assembly and a second lubricant-tight assembly (2b) is designed as an oil-lubricated hammer mechanism assembly. Elektrohandwerkzeugmaschine nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass über eine Sonderfunktion des Modiwahlschalters (1) vermittelt mit dem Schaltgestänge (5) ein Motorschalter (9) arretierbar und/oder elektronisch über einen Sensorschalter (10) und eine Motorelektronik (11) die Motordrehzahl veränderbar ist.Electric hand machine tool according to one of the preceding claims, characterized in that, via a special function of the mode selector switch (1), a motor switch (9), which can be locked and / or electronically via a sensor switch (10) and motor electronics (11), transmits the motor speed with the shift linkage (5) is changeable.
EP03405384A 2002-06-06 2003-05-27 Electric hand tool with mode selection switch Expired - Lifetime EP1369207B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10225239A DE10225239A1 (en) 2002-06-06 2002-06-06 Mode selector switch for combined electric hand machine tool
DE10225239 2002-06-06

Publications (2)

Publication Number Publication Date
EP1369207A1 true EP1369207A1 (en) 2003-12-10
EP1369207B1 EP1369207B1 (en) 2009-07-29

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EP03405384A Expired - Lifetime EP1369207B1 (en) 2002-06-06 2003-05-27 Electric hand tool with mode selection switch

Country Status (5)

Country Link
US (1) US6725944B2 (en)
EP (1) EP1369207B1 (en)
JP (1) JP4570337B2 (en)
CN (1) CN1467057A (en)
DE (2) DE10225239A1 (en)

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US7762349B2 (en) 2007-11-21 2010-07-27 Black & Decker Inc. Multi-speed drill and transmission with low gear only clutch
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DE50311744D1 (en) 2009-09-10
JP2004009291A (en) 2004-01-15
CN1467057A (en) 2004-01-14
EP1369207B1 (en) 2009-07-29
JP4570337B2 (en) 2010-10-27
DE10225239A1 (en) 2003-12-18
US20030226673A1 (en) 2003-12-11
US6725944B2 (en) 2004-04-27

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