EP2842697A1 - Machine-outil manuelle - Google Patents

Machine-outil manuelle Download PDF

Info

Publication number
EP2842697A1
EP2842697A1 EP13182607.5A EP13182607A EP2842697A1 EP 2842697 A1 EP2842697 A1 EP 2842697A1 EP 13182607 A EP13182607 A EP 13182607A EP 2842697 A1 EP2842697 A1 EP 2842697A1
Authority
EP
European Patent Office
Prior art keywords
carriage
gear
gear position
hand tool
tool according
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Withdrawn
Application number
EP13182607.5A
Other languages
German (de)
English (en)
Inventor
Franz Mössnang
Markus Hartmann
Manfred Ludwig
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
Priority to EP13182607.5A priority Critical patent/EP2842697A1/fr
Priority to PCT/EP2014/068566 priority patent/WO2015028678A1/fr
Priority to CN201480048427.7A priority patent/CN105492170B/zh
Priority to EP14758864.4A priority patent/EP3041644B1/fr
Priority to US14/915,728 priority patent/US10328565B2/en
Publication of EP2842697A1 publication Critical patent/EP2842697A1/fr
Withdrawn legal-status Critical Current

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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
    • B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
    • 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 present invention relates to a hand tool, e.g. an electric screwdriver, a hammer drill, which is provided with a manually switchable gear unit.
  • the hand tool of the invention has a tool holder for receiving a tool, a motor, at least one shiftable gear stage, and a slide.
  • the gear stage drives the motor drivingly to the tool holder.
  • the gear stage has a gear element which is movable in a switching direction and has a toothing which, in a first gear position, is in engagement with a corresponding toothing and in a second gear position is disengaged from the corresponding toothing.
  • the slider is displaceable by a user between at least a first shift position and a second shift position in the shift direction, wherein the first shift position of the first gear position and the second shift position of the second gear position are assigned.
  • the slider has a finger.
  • a coupling device has a movable in the switching direction carriage and a locking of the carriage with a housing.
  • the carriage is connected to the movable transmission element.
  • the latch is engaged in the first gear position and the second gear position and the latch is not engaged in positions between the first gear position of the second gear position.
  • the first and second gear position are, so to speak, immediately adjacent.
  • the carriage is indeed moved on the way between the two gear position, but should not come to this stop.
  • a spring element has a resilient first portion and a resilient second portion, both portions each having an end secured to the carriage and an end movable relative to the carriage.
  • the finger is arranged along the indexing axis between the sections.
  • the coupling device mediates the actuation of the slider to the transmission element.
  • the coupling device advantageously prevents the transmission element from stopping on the way between two gear positions, even if the user pushes the slider into a position between two shift positions.
  • the Coupling device damage to the transmission element, since the user can not forcibly push it out of engagement with a toothing in a blockade.
  • FIG. 1 and 2 As an example of a hand tool machine schematically show an electric screwdriver 1.
  • the electric screwdriver has a tool holder 2, in which a tool 3, such as a screwdriver bit, a drill 3, can be used.
  • An electric motor 4 drives the tool holder 2 about its working axis 5 .
  • the electrical supply of the electric motor 4 can be effected by a battery 6 , which is releasably secured to a housing 7 of the electric screwdriver 1 .
  • the user can take the hand tool with a system button 8 in operation and run during operation with a handle 9 .
  • the electric screwdriver 1 is provided with a switchable gear stage 10 .
  • the exemplary transmission stage 10 allows the user to choose between two different ratios.
  • the exemplary transmission stage 10 has a drive-side sun gear 11, which is coupled to the output shaft 12 of the motor 4 .
  • a ring gear 15 is also in engagement with the planet 14.
  • the ring gear 15 is slidable along the working axis 5 between two provided gear positions.
  • the ring gear 15 is coupled in a first of the gear positions by way of example torsionally rigid with the housing 7 ( Fig. 1 ) and in a second of the gear positions freely rotating against the housing ( Fig. 2 ).
  • the housing 7 has a radial toothing 16, which engages in a corresponding toothing 17 of the ring gear 15 .
  • the ring gear 15 In the second gear position, the ring gear 15 relative to the housing 7, about the working axis 5 is rotatable.
  • the teeth 16, 17 is solved.
  • a slider 18 is provided on the outside of the housing 7 .
  • the slider 18 is connected via a coupling device 19 with the ring gear 15 .
  • the user can move the slide 18 along a switching axis 20 between a first switching position and a second switching position, which are each associated with one of the gear positions of the ring gear 15 .
  • the coupling device 19 ensures that the ring gear 15 occupies only the intended gear positions and can not remain on the way between the gear positions.
  • the coupling device 19 allows the switching position of the slider 18 and the gear position of the ring gear 15 to temporarily decouple.
  • the slider 18 can already be actuated when the instantaneous angular position of the ring gear 15 inhibits the sliding of its toothing 16 on the toothing 17 of the housing 7 .
  • Fig. 3 shown as an isometric section, in which the slide 18 in changed switching position and the ring gear 15 with the gear position has not yet followed.
  • Fig. 4 shows the coupling device 19 at the same shift position and gear position.
  • the coupling device 19 has a carriage 21 which is movable parallel to the slider 18 .
  • the carriage 21 is preferably rigidly connected to the gear element to be moved, in this case the ring gear 15 .
  • the orientation of the slider 18 and the carriage 21 is therefore preferably oriented on the indexing axis 20 of the transmission element.
  • the carriage 21 is provided with two pins 22, 23 .
  • the first pin 22 is offset from the second pin 23 transversely to the indexing axis 20 .
  • a coil spring 24 with two protruding legs 25, 26 attached.
  • the legs 25, 26 thus each have a fixed to the first pin 22 end 27, 28 and a loose End 29, 30.
  • the legs 25, 26 are permanently attached to the first pin 22 with one of its ends 27, 28 .
  • the two legs 25, 26 extend from the first pin 22 to the second pin 23.
  • the loose ends 29, 30 of the legs 25, 26 are applied to the second pin 23 , that the pin 23 along the indexing axis 20 between the two legs 25, 26 is arranged.
  • the one leg 25 abuts on one side of the pin 23 , which points in a switching direction 31
  • the other leg 26 is located on one side of the pin 23, which points counter to the switching direction 31 .
  • the legs 25, 26 may be biased biased to the second pin 22 .
  • the slider 18 has a finger 32 which engages between the two legs 25, 26 .
  • the finger 32 is thus in the switching direction 31 in front of the one leg 25 and after the other leg 26.
  • the legs 25, 26 touch opposite sides 33, 34 of the finger 32.
  • the finger 32 and the two pins 22, 23 are at the same gear position the slider 18 with the switching position of the ring gear 15 on a line.
  • the finger 32 is disposed between the first pin 22 and the second pin 23 . If the slider 18 is deflected from a switching position into a switching direction 31 , an offset to the switching axis 20 offset of the finger 32 to the second pin 22.
  • the finger 32 deflects one of the two legs 25 in the switching direction 31 , while the other leg 26th inhibited by the second pin 23 does not follow the deflection of the one leg 25 .
  • the two legs 25, 26 are thus pressed apart against their spring force.
  • On the carriage 21 acts a force exerted by the coil spring 24 switching force in the switching direction 31.
  • the carriage 21 follows the movement of the slider 18, whereby the pins 22, 23 again come into line with the finger 32 and the spring force is minimized.
  • the structure with the coil spring 24 is easy to implement, inter alia, because the coil spring 24 is available as a standard standard product and the installation of the coil spring 24 is easy to do.
  • the second pin 23 is advantageous because it prevents pivoting of the entire coil spring 24 about the first pin 22 .
  • the coil spring 24 can be rotatably seated on the first pin 22 .
  • the coil spring 24 is secured against pivoting or turning about the first pin 22 and the second pin 23 may be omitted.
  • the carriage 21 has a catch 35 with the housing 7.
  • the catch 35 engages in each case when the carriage 21 or the gear element has reached the intended gear position.
  • the latching 35 requires that a force acting on the carriage 21 thrust along the switching axis 20 must exceed a threshold, thus the carriage 21 from a gear position is moved.
  • the exemplary latch 35 includes a plurality of, according to the number of gear positions, recesses 36 which are formed along the switching axis 20 successively in the housing 7 .
  • the distance of the recesses 36 corresponds to the distance of the gear positions.
  • the carriage 21 has a transversely to the switching axis 20 projecting nose 37, which engages in each one of the recesses 36 .
  • the recesses 36 and the nose 37 preferably have inclined flanks extending to the indexing axis 20 . Due to the edges of the nose 37 is pushed out of the recess 36 at a sufficient thrust along the shift axis 20 .
  • the nose 37 may be disposed on a spring 38 against the spring force, the nose 37 is deflected out of the recess 36 out.
  • the spring 38 may, for example, be realized in the carriage 21 by a slot 39 adjoining the nose 37 in deflection direction.
  • the switching force exerted by the helical spring 24 has to overcome the threshold predetermined by the latch 35 before the carriage 21 can follow the movement of the slider 18 .
  • the threshold value is preferably chosen so that the carriage 21 does not move until the switching force drives the carriage 21 to the next latching position, ie gear position.
  • the threshold value is between 50% and 100% of a switching force, for example between 75% and 90%, which gives the coil spring 24 at an offset between slider 18 and carriage 21 equal to the distance 40 between two gear positions, eg recesses 36 .
  • the distances between the switching positions of the slider 18 are preferably equal to the distances 40 between the gear positions. The user may preferentially shift the slider 18 slightly, eg 10% to 40% of the distance 40, beyond a shift position to initiate a shift.
  • the carriage 21 jumps into the next gear position and locked in this. Once the user releases the slider 18 , the remaining switching force provides for a return of the slider 18.
  • the threshold value can be adjusted by the spring force of the spring 38 and the shape of the flanks of the nose 37 and the recesses 36 .
  • Fig. 5 shown as an isometric section, in which the slide 18 in changed switching position and the ring gear 15 with the gear position has not yet followed.
  • Fig. 4 shows the coupling device 41 at the same shift position and gear position.
  • the carriage 21 has a spring element 42 with two resilient sections 43, 44 folded along the indexing axis 20.
  • the two folded sections 43, 44 are arranged successively parallel to the indexing axis 20 .
  • Each of the sections 43, 44 has an end 45, 46 which is fixed to the carriage 21 .
  • the other end 47, 48 of the folded portions 43, 44 is loose relative to the carriage 21.
  • the two loose ends 47, 48 are along the indexing axis 20 between the two fixed ends 45, 46, preferably in the middle.
  • the two loose ends 47, 48 are connected together.
  • a runner 49 may be suspended from the two loose ends 47, 48 .
  • the rotor 49 is movable relative to the carriage 21 along the switching axis 20 .
  • the carriage 21 and the spring element 42 are preferably formed in one piece. The carriage 21 and the spring element 42 are thus contiguous of the same material and without connecting seams.
  • the slider 18 is connected to the center of the spring element 42, for example, the rotor 49 .
  • the slider 18 may have a tab 50 which engages around the rotor 49 in a form-fitting manner.
  • the slider 49 and the tab 50 form a two-piece counterpart to the finger 32 of the previous embodiment.
  • the carriage 21 can be preassembled, the slider 18 is placed with the rider 50 on the rotor 49 .
  • the spring element 42 is braced in itself, in the switching direction 31 front portion 44 43 is stretched, the rear in the direction of shift 31 section 43 is compressed.
  • the resulting spring force serves as a switching force for the carriage 21st
  • the carriage 21 may have stops 51 , which limit a relative offset of the rotor 49 relative to its rest position on the carriage 21 .
  • the carriage 21 preferably comes into contact with one of the stops 51 when the offset is greater than 150% of the distance 40 of the gear positions.
  • the offset is obtained by a displacement of the slider 18 by more than 150% from one of the switch positions in the associated gear position of the carriage 21 remains. For example, the teeth 17 may be blocked. To avoid damage to the folded portions 43, 44 , they are decoupled by the stop 51 of the rotor 49 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear Transmission (AREA)
  • Mechanical Operated Clutches (AREA)
  • Push-Button Switches (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP13182607.5A 2013-09-02 2013-09-02 Machine-outil manuelle Withdrawn EP2842697A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP13182607.5A EP2842697A1 (fr) 2013-09-02 2013-09-02 Machine-outil manuelle
PCT/EP2014/068566 WO2015028678A1 (fr) 2013-09-02 2014-09-02 Outil électroportatif
CN201480048427.7A CN105492170B (zh) 2013-09-02 2014-09-02 手持工具机
EP14758864.4A EP3041644B1 (fr) 2013-09-02 2014-09-02 Machine-outil manuelle
US14/915,728 US10328565B2 (en) 2013-09-02 2014-09-02 Portable power tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13182607.5A EP2842697A1 (fr) 2013-09-02 2013-09-02 Machine-outil manuelle

Publications (1)

Publication Number Publication Date
EP2842697A1 true EP2842697A1 (fr) 2015-03-04

Family

ID=49123675

Family Applications (2)

Application Number Title Priority Date Filing Date
EP13182607.5A Withdrawn EP2842697A1 (fr) 2013-09-02 2013-09-02 Machine-outil manuelle
EP14758864.4A Active EP3041644B1 (fr) 2013-09-02 2014-09-02 Machine-outil manuelle

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP14758864.4A Active EP3041644B1 (fr) 2013-09-02 2014-09-02 Machine-outil manuelle

Country Status (4)

Country Link
US (1) US10328565B2 (fr)
EP (2) EP2842697A1 (fr)
CN (1) CN105492170B (fr)
WO (1) WO2015028678A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019042792A1 (fr) * 2017-08-29 2019-03-07 Festool Gmbh Machine-outil portative
US11964375B2 (en) 2019-11-27 2024-04-23 Black & Dekcer Inc. Power tool with multispeed transmission

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11059160B2 (en) * 2011-07-29 2021-07-13 Black & Decker Inc. Multispeed power tool

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1632314A2 (fr) * 2004-09-03 2006-03-08 Robert Bosch Gmbh Commutateur avec un ressort de synchronisation
EP2184138A2 (fr) * 2008-11-08 2010-05-12 BLACK & DECKER INC. Transmission d'outil électrique à vitesses multiples dotée d'une configuration d'engrenage de couronne alternative
DE102010041172A1 (de) * 2010-09-22 2012-03-22 Robert Bosch Gmbh Handgeführtes Elektrowerkzeug mit einem Getriebe
EP2551064A2 (fr) * 2011-07-29 2013-01-30 Black & Decker Inc. Outil électrique multivitesse

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000288960A (ja) 1999-04-01 2000-10-17 Mobiletron Electronics Co Ltd 電動工具の速度を変える制御機構
DE10031050A1 (de) * 2000-06-26 2002-01-10 Hilti Ag Handwerkzeuggerät
DE10156392B4 (de) 2001-11-16 2008-04-10 Robert Bosch Gmbh Gangschaltvorrichtung für ein mehrstufiges Getriebe eines Elektrowerkzeugs
DE10222824A1 (de) 2002-05-21 2003-12-04 Hilti Ag Elektrowerkzeug mit mehrstufigem Getriebe
DE10354295B4 (de) * 2003-11-20 2006-01-26 Hilti Ag Bewegungsumwandlungsvorrichtung für Handwerkzeuggeräte, wie beispielsweise Stich- und Säbelsägen
US7308948B2 (en) * 2004-10-28 2007-12-18 Makita Corporation Electric power tool
TWI279298B (en) * 2004-11-24 2007-04-21 Hitachi Koki Kk Hammer drill
DE102006035386A1 (de) * 2006-10-31 2008-05-08 Hilti Ag Elektrowerkzeug mit mehrstufigem Getriebe
DE102006000515A1 (de) * 2006-12-12 2008-06-19 Hilti Ag Elektrisches Handwerkzeuggerät
DE102010030307B4 (de) * 2009-10-02 2022-09-29 Robert Bosch Gmbh Handwerkzeugmaschine mit einer schaltbaren Mechanik
DE102009054927A1 (de) * 2009-12-18 2011-06-22 Robert Bosch GmbH, 70469 Handwerkzeugmaschine, insbesondere Akkuhandwerkzeugmaschine
DE102010063069A1 (de) * 2010-12-14 2012-06-14 Robert Bosch Gmbh Handwerkzeugmaschine, insbesondere Bohrmaschine oder Schraubbohrmaschine
JP5468570B2 (ja) * 2011-06-17 2014-04-09 株式会社マキタ 打撃工具
US9233461B2 (en) * 2012-02-27 2016-01-12 Black & Decker Inc. Tool having multi-speed compound planetary transmission
DE102012211914B4 (de) * 2012-04-05 2023-06-15 Robert Bosch Gmbh Handwerkzeugmaschine mit einem Planetengetriebe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1632314A2 (fr) * 2004-09-03 2006-03-08 Robert Bosch Gmbh Commutateur avec un ressort de synchronisation
EP2184138A2 (fr) * 2008-11-08 2010-05-12 BLACK & DECKER INC. Transmission d'outil électrique à vitesses multiples dotée d'une configuration d'engrenage de couronne alternative
DE102010041172A1 (de) * 2010-09-22 2012-03-22 Robert Bosch Gmbh Handgeführtes Elektrowerkzeug mit einem Getriebe
EP2551064A2 (fr) * 2011-07-29 2013-01-30 Black & Decker Inc. Outil électrique multivitesse

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019042792A1 (fr) * 2017-08-29 2019-03-07 Festool Gmbh Machine-outil portative
US11325239B2 (en) 2017-08-29 2022-05-10 Festool Gmbh Hand-held power tool
US11964375B2 (en) 2019-11-27 2024-04-23 Black & Dekcer Inc. Power tool with multispeed transmission

Also Published As

Publication number Publication date
CN105492170B (zh) 2018-05-08
US10328565B2 (en) 2019-06-25
US20160199971A1 (en) 2016-07-14
CN105492170A (zh) 2016-04-13
EP3041644B1 (fr) 2019-11-06
WO2015028678A1 (fr) 2015-03-05
EP3041644A1 (fr) 2016-07-13

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