EP2803450A1 - Poignée supplémentaire - Google Patents

Poignée supplémentaire Download PDF

Info

Publication number
EP2803450A1
EP2803450A1 EP13168118.1A EP13168118A EP2803450A1 EP 2803450 A1 EP2803450 A1 EP 2803450A1 EP 13168118 A EP13168118 A EP 13168118A EP 2803450 A1 EP2803450 A1 EP 2803450A1
Authority
EP
European Patent Office
Prior art keywords
handle
spring
bracket
action
stop
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Withdrawn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
EP13168118.1A
Other languages
German (de)
English (en)
Inventor
Markus Holubarsch
Stefan Schmid
Stefan Hammerstingl
Ferdinand Kristen
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 EP13168118.1A priority Critical patent/EP2803450A1/fr
Priority to CN201480028485.3A priority patent/CN105392601B/zh
Priority to EP14727735.4A priority patent/EP2996842B1/fr
Priority to JP2016513341A priority patent/JP6151439B2/ja
Priority to US14/891,305 priority patent/US9701007B2/en
Priority to PCT/EP2014/059812 priority patent/WO2014184222A1/fr
Publication of EP2803450A1 publication Critical patent/EP2803450A1/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Withdrawn legal-status Critical Current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
    • B25F5/02—Construction of casings, bodies or handles
    • B25F5/025—Construction of casings, bodies or handles with torque reaction bars for rotary tools
    • B25F5/026—Construction of casings, bodies or handles with torque reaction bars for rotary tools in the form of an auxiliary handle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/02—Construction of casings, bodies or handles

Definitions

  • the present invention relates to an auxiliary handle for a hand tool.
  • GB 200722762 A discloses an additional handle.
  • the auxiliary handle has a handle-shaped handle and an annular bracket, which can be attached to the neck of a drill, for example.
  • a bayonet catch clamps the open ends of the stirrup between the thighs of the handle to tighten the stirrup. To clamp and release the strap, the user needs one hand to hold the handle and another hand to open or close the latch.
  • the auxiliary handle according to the invention is intended for a hand tool machine, in particular a chiseling hand tool machine.
  • the user can grip the auxiliary handle on a handle body.
  • An annular bracket is provided for clamping on the power tool.
  • the hanger has two joinable ends.
  • a prestressed spring presses the collapsible ends against a stop to merge with a force acting in a direction of action.
  • a release device is held by the force acting in the effective direction of the force of the biased spring in a basic position. The user can deflect the release device against the acting in the direction of action force of the prestressed spring in a release position for canceling the compressible ends against the stop pushing force.
  • the auxiliary handle can be attached or detached with one hand on the hand tool.
  • the user brings only a force to release the auxiliary handle, a fastening is carried out by the prestressed spring.
  • the spring provides the basic position in which the two ends are brought together and thus tightened the annular bracket.
  • the spring achieves the lowest preload by tensioning the stirrup. Releasing is done by decoupling the spring from one side of the ends. For this purpose, the spring is not relaxed, but additionally stretched against their bias further.
  • the tension of the preloaded spring is in the release position of the release device higher than the preload of the preloaded spring in the home position of the release device.
  • One embodiment provides that a first end of the prestressed spring in the auxiliary handle is immovably applied, a second end of the prestressed spring is movable and the second end is coupled to the bracket and to the release device.
  • the movable end of the spring loads the bracket in the direction of action also loaded the movable end of the spring release device.
  • An embodiment provides that the ends of the annular bracket abuts on one side of the stop and the immovable first end of the prestressed spring on the side facing away from the one side of the stopper.
  • the preloaded spring exerts only in the effective direction, directly or indirectly, a force on the bracket.
  • the stop decouples the bracket from a force of the spring against the effective direction.
  • the stop is in particular immovable relative to the handle area.
  • An embodiment provides that the ends of the bracket are mounted in the radial direction on the pull rod and along the effective direction between the first end portion of the tie rod and the stop are arranged.
  • the user can advantageously create the bracket without the handle area on the power tool and only clamp for locking between the tie rod and spring.
  • the pull rod has a non-circular cross section with a larger radial dimension and a smaller radial dimension.
  • the ends of the stirrup had a cylindrical cavity with an inner diameter equal to the larger radial dimension and a longitudinal slot radially opening the cavity with a width equal to the smaller radial dimension.
  • the bracket must be in order to remove it pivoted in the correct orientation with respect to the pull rod.
  • One embodiment has a pull rod.
  • the pull rod is movable parallel to the direction of action relative to the stop and the ends of the bracket. In the basic position, a first end portion of the pull rod in the effective direction is non-positively coupled to the ends.
  • the prestressed spring is clamped between the stop and a second end portion of the drawbar, and the drawbar exerts a force in the direction of action out on the drawbar. In the release position, the first end portion of the pull rod is deflected against the force of the spring counter to the effective direction. The frictional coupling of the drawbar with the ends is canceled.
  • the release device includes a toggle.
  • a lever arm of the toggle lever can be permanently coupled to the tie rod or coupled against the effective direction non-positively with the tie rod or the spring.
  • Fig. 1 schematically shows a hammer drill 1 as an example of a chiseling hand tool .
  • the hammer drill 1 has a tool holder 2, in which a shank end 3 of a tool, for example one of the drill bit 4, can be used.
  • a primary drive of the hammer drill 1 is a motor 5, which drives a striking mechanism 6 and an output shaft 7 .
  • a user can guide the hammer drill 1 by means of a handle 8 and take means of a system switch 9, the hammer drill 1 is in operation.
  • the hammer drill 1 rotates the drill bit 4 continuously about a working axis 10 and can beat the drill bit 4 in the direction of impact 11 along the working axis 10 in a substrate.
  • the striking mechanism 6 is, for example, a pneumatic percussion 6.
  • An exciter 12 and a racket 13 are movably guided in a guide tube 14 of the percussion mechanism 6 along the working axis 10 .
  • the exciter 12 is coupled via an eccentric 7 or a wobble finger to the motor 8 and forced to a periodic, linear movement.
  • An air spring formed by a pneumatic chamber 15 between exciter 12 and racket 13 couples a movement of the racket 13 to the movement of the exciter 12 at.
  • the racket 13 can strike directly on a rear end of the drill bit 4 or indirectly transfer part of its pulse to the drill bit 4 via a substantially resting intermediate racket 16 .
  • the striking mechanism 6 and preferably the further drive components are arranged within a machine housing 17 .
  • Fig. 2 shows the auxiliary handle 18 in its basic position
  • Fig. 3 shows the auxiliary handle 18 in its release position.
  • the user can grab the auxiliary handle 18 on a handle body 19 with one hand.
  • the gripping body 19 is substantially coaxial with a handle axis 20.
  • the gripping surface of the gripping body 19 can deviate from a right angle, be ergonomically shaped adapted to the contour of a hand.
  • the user derives an extension of his hand and forearm a holding force transverse to the handle axis 20, along a holding direction 21 a.
  • the grip body 19 in the direction of retention 21 opposite a mounting portion 22 is arranged, with which the auxiliary handle 18 can be attached to the hand tool 1 if necessary.
  • the handle-shaped configuration reduces the torque acting on the handle body 19 and the hand holding a hand tool by means of the auxiliary handle 18.
  • Two opposite along the holder direction 21 oriented leg 23, 24 connect the handle body 19 and mounting portion 22 to a closed frame.
  • the attachment portion 22 has a pull rod 25 whose axis 26 may be parallel to the handle axis 20 .
  • the pull rod 25 is suspended in a first (left) bearing block 27 and a second (right) bearing block 28 along its axis 26 movable.
  • the direction along the axis 26 from the left bracket 27 to the right bracket 28 is hereinafter referred to as the pulling direction 29 .
  • Each of the bearing blocks 27, 28 is rigidly attached to one of the legs 23, 24 .
  • the two facing each other ends of the bearing blocks 27, 28 are unconnected and against each other.
  • the handle body 19 and the legs 23, 24 have sufficient elasticity in order to increase the distance of the bearing blocks 27, 28 along the axis 26 by several millimeters.
  • the drawbar 25 has at its first (left) end a to the axis 26 radially projecting anchor 30.
  • a facing the direction of pull 29 facing surface of the left bearing block 27 forms a stop for the armature 30.
  • the drawbar 25 can be moved only in the pulling direction 29 with the left bearing block 27 .
  • the drawbar 25 is opposite to the pulling direction 29 on the left bracket 28 addition.
  • An inner diameter of the left bearing block 28 is adapted to the cross section of the tie rod 25 and less than the radial dimension of the armature 30th
  • the drawbar 25 has at its second (right) end a radially projecting plate 31st
  • a left sleeve 32 and a right sleeve 33 are placed on the tie rod 25 between the two bearing blocks 27, 28 .
  • Each of the sleeves 32, 33 is connected to a clamp 34 .
  • the two clamps 34 are movably connected to each other via a hinge 35 and together form an annular bracket 36.
  • the circumference of the bracket 36 is over the distance of the two sleeves 32, 33 variable.
  • the bracket 36 on the sleeves 32, 33 removed from the pull rod 25 ( Figure 4 ) and unfolded. The user can put the unfolded bracket 36, for example, around the machine housing 17 near the tool holder 2 and then close it again.
  • the bracket 36 may also be realized by means of a flexible band.
  • the to the bearing blocks 27, 28 separately formed sleeves 32, 33 may also be connected to these, for example, if there is no need for a removable bracket 36 .
  • the left sleeve 32 is located on the left bearing block 27 and the right sleeve 33 abuts against the right bearing block 28 .
  • the bearing blocks 27, 28 and the sleeves 32, 33 may be provided in pairs with teeth 37, 38 at their end faces. The angular orientation of the bracket 36 to the handle body 19 relative to the axis 26 may thus be provided with detent positions.
  • a compression spring for example a helical spring 39, is arranged within the right bearing block 28 in parallel, for example coaxially, to the drawbar 25 .
  • a first (left) end of the coil spring 39 is supported on a supporting surface 40 formed by the right bearing block 28 or otherwise secured to the right bearing block 28 .
  • the left end of the coil spring 39 is thus immovable.
  • the second (right) end abuts against the plate 31 of the drawbar 25 .
  • the right end can move, for example, by moving the drawbar 25 in the pulling direction 29 .
  • the effective direction 29 of the helical spring 39 coincides with the pulling direction 29 .
  • the coil spring 39 is inserted under permanent bias between the right bracket 28 and the plate 31 of the tie rod 25 .
  • the armature 30 is in a row permanently on the left bearing block 27 and pulls it under the action of the coil spring 39 in the pulling direction 29 to the right bracket 28.
  • the two sleeves 32, 33 are of the left bracket 27 in the direction of action 29 of the coil spring 39 against the pushed right bracket 28 .
  • the circumference of the bracket 36 is shortened and consequently the bracket 36 clamps against the hand tool 1.
  • the exemplary additional handle 18 can be released by means of a toggle lever.
  • the toggle lever has a lever handle 41, which the user can grip and pull to the handle body 19 .
  • the lever handle 41 and the handle body 19 are approximately parallel to each other.
  • the user can grip around the handle body 19 without simultaneously gripping the lever handle 41 .
  • a distance of the lever handle 41 to the handle body 19 in the holding direction 21 is for example in the range between 3 cm and 5 cm.
  • the toggle lever has a first lever arm 42 and a second lever arm 43, which are connected via a knee joint 44 .
  • the first lever arm 42 is provided with a hinge and the second lever arm 43 is also provided with a pivot 45 on the right leg 24 .
  • the first lever arm 42 is rigidly connected to the lever handle 41 .
  • the second lever arm 43 is connected by means of a pin 46 with the tie rod 25 .
  • the second lever arm 43 is deflected counter to the direction of action 29 coil spring 39 when the user pulls the lever handle 41 to the handle body 19 .
  • the pull rod 25 is moved against the pulling direction / effective direction 29 .
  • the armature 30 releases from the left bracket 27.
  • the power flow to the sleeves 32, 33 is interrupted.
  • the sleeves 32, 33 can move away from each other on the axis 26 , to reduce by expanding the bracket 36 whose tension.
  • the displacement of the pull rod 25 takes place against the direction of action 29 of the coil spring 39.
  • the plate 31 of the pull rod 25 moves toward the support surface 40 .
  • the movable end of the coil spring 39 is brought closer to the immovable, whereby the tension of the coil spring 39 is increased beyond the bias.
  • the toggle proves to be particularly suitable to apply the necessary force to compress the coil spring 39 .
  • Other known lever mechanisms with a high gear ratio are also suitable.
  • the overcoming bias is preferably in the range between 100 Newton and 2000 Newton.
  • the short actuating path of the toggle lever, which is a result of the high transmission ratio, is sufficient, in particular with a removable bracket 36 .
  • the lever handle 41 is preferably held under pretension in its basic position.
  • the bias voltage is applied by the coil spring 39 .
  • the lever handle 41 automatically goes to its normal position and does not flutter during the chiseling operation of the power tool 1.
  • Fig. 8 shows a cross-section through an exemplary sleeve 32 perpendicular to the axis 26.
  • the tie rod 25 preferably has one or two opposite flattened sides 47 in the region of the sleeve 32.
  • the radial dimension 48 of the tie rod 25 perpendicular to the sides 47 is less than in other angular directions.
  • the other sides are cylindrical, for example.
  • the sleeve 32 has a cylindrical cavity whose inner diameter 49 corresponds to the diameter of the drawbar 25 .
  • the sleeve 32 can be rotated freely around the pull rod 25 .
  • the sleeve 32 is also slotted along the axis 26 .
  • a dimension of the slot 50 parallel to the axis 26 corresponds to the smallest radial dimension 48 of the tie rod 25.
  • the dimension 48 is thus smaller than the inner diameter of the cylindrical cavity.
  • the bracket 36 can only be removed from the pull rod 25 , when the flattened sides 47 are aligned parallel to the slot 50 .
  • the bracket 34 is preferably wound in this case by 90 degrees to the handle body 19 .
  • FIGS. 6 and 7 show a further embodiment of the auxiliary handle 51 in basic position or in the release position for removal / attachment to the power tool 1.
  • the embodiment is true in most elements with the auxiliary handle 18 of FIGS. 2 and 3 why a complete repetition of all features is omitted and reference is made to the preceding description.
  • the auxiliary handle 51 has, for example, a flexible metal band 52, instead of which two rigid clamps 34 can be used.
  • the metal band 52 is suspended from mutually movable two sleeves 32, 33 .
  • the two sleeves 32, 33 are mounted between a first (left) bearing block 53 and a (right) second bearing block 28 on a pull rod 25 .
  • the pull rod 25 is biased by the spring 39 in the direction 29 .
  • the spring 39 is supported on the right bearing block 28, which is immovably connected to the handle body 19th
  • the left bearing block 53 is movable along the pull rod 25 relative to the handle body 19 .
  • the kraftbeetzschte pull rod 25 presses with an anchor 54 on the left bracket 53 and moves it while in the direction 29 to the sleeves 32, 33 to clamp on this the metal strip 52 .
  • the handle body 19 does not have to deform.
  • the left bearing block 53 may be inserted in a guide 55 connected to the handle body 19 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
EP13168118.1A 2013-05-16 2013-05-16 Poignée supplémentaire Withdrawn EP2803450A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP13168118.1A EP2803450A1 (fr) 2013-05-16 2013-05-16 Poignée supplémentaire
CN201480028485.3A CN105392601B (zh) 2013-05-16 2014-05-14 附加手柄
EP14727735.4A EP2996842B1 (fr) 2013-05-16 2014-05-14 Poignée supplémentaire
JP2016513341A JP6151439B2 (ja) 2013-05-16 2014-05-14 サイドハンドル
US14/891,305 US9701007B2 (en) 2013-05-16 2014-05-14 Side handle
PCT/EP2014/059812 WO2014184222A1 (fr) 2013-05-16 2014-05-14 Poignée additionnelle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13168118.1A EP2803450A1 (fr) 2013-05-16 2013-05-16 Poignée supplémentaire

Publications (1)

Publication Number Publication Date
EP2803450A1 true EP2803450A1 (fr) 2014-11-19

Family

ID=48444197

Family Applications (2)

Application Number Title Priority Date Filing Date
EP13168118.1A Withdrawn EP2803450A1 (fr) 2013-05-16 2013-05-16 Poignée supplémentaire
EP14727735.4A Active EP2996842B1 (fr) 2013-05-16 2014-05-14 Poignée supplémentaire

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP14727735.4A Active EP2996842B1 (fr) 2013-05-16 2014-05-14 Poignée supplémentaire

Country Status (5)

Country Link
US (1) US9701007B2 (fr)
EP (2) EP2803450A1 (fr)
JP (1) JP6151439B2 (fr)
CN (1) CN105392601B (fr)
WO (1) WO2014184222A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107107328A (zh) * 2014-12-19 2017-08-29 喜利得股份公司 附加手柄

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015061370A1 (fr) 2013-10-21 2015-04-30 Milwaukee Electric Tool Corporation Adaptateur pour dispositifs d'outil électrique
US11077542B2 (en) * 2013-10-31 2021-08-03 Stanley Fastening Systems, L.P. Metal connector adaptor for a fastening tool
US11433524B2 (en) * 2018-12-19 2022-09-06 George E. Westinghouse Vibration reducing extension system
US11583992B2 (en) * 2021-03-25 2023-02-21 Milwaukee Electric Tool Corporation Side handle for power tool

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040163214A1 (en) * 2003-02-25 2004-08-26 Motomax Electric Co., Ltd. Assist handle for electric tools
EP1974867A1 (fr) * 2007-03-29 2008-10-01 Makita Corporation Poignées pour outils manuels
DE102009000598A1 (de) * 2008-02-15 2009-08-20 Robert Bosch Gmbh Schwingungsentkoppelter Handgriff
WO2009137808A1 (fr) * 2008-05-09 2009-11-12 Milwaukee Electric Tool Corporation Poignée auxiliaire pour outil à moteur
EP2163357A1 (fr) * 2008-09-15 2010-03-17 HILTI Aktiengesellschaft Poignée supplémentaire pour une machine-outil manuelle
US20100064482A1 (en) * 2008-09-15 2010-03-18 Hilti Aktiengesellschaft Auxiliary handle for hand-held power tool

Family Cites Families (13)

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Publication number Priority date Publication date Assignee Title
US4276675A (en) * 1980-02-07 1981-07-07 Black & Decker Inc. Auxiliary handle for a power tool
US5049012A (en) * 1991-03-11 1991-09-17 Ryobi Motor Products Corp. Auxiliary handle for hand-held drill
JPH08243953A (ja) * 1995-03-07 1996-09-24 Makita Corp 電動工具のサイドハンドル
CA2392848A1 (fr) * 2001-07-26 2003-01-26 Black & Decker Inc. Indicateur de niveau de foret
JP4647957B2 (ja) * 2004-08-27 2011-03-09 株式会社マキタ 作業工具
DE102005000207A1 (de) * 2005-12-23 2007-06-28 Hilti Ag Handwerkzeuggerät mit gefederter Griffaufhängung
DE102006055014A1 (de) * 2006-11-22 2008-05-29 Robert Bosch Gmbh Zusatzhandgriff mit Exzenterspannhebel für eine Handwerkzeugmaschine
DE102006055517A1 (de) 2006-11-24 2008-05-29 Robert Bosch Gmbh Zusatzhandgriff für eine Handwerkzeugmaschine mit Schnellverstellung durch Bajonettkupplung
DE102008000516A1 (de) * 2008-03-05 2009-09-10 Robert Bosch Gmbh Zusatzhandgriff sowie Handwerkzeugmaschine
JP5184223B2 (ja) * 2008-06-17 2013-04-17 株式会社マキタ 補助ハンドル
DE102008042111A1 (de) * 2008-09-15 2010-03-18 Hilti Aktiengesellschaft Zusatzhandgriff für eine Handwerkzeugmaschine
DE102009047705B4 (de) * 2009-12-09 2014-02-13 Hilti Aktiengesellschaft Zusatzgriff
JP6158698B2 (ja) * 2013-12-25 2017-07-05 株式会社マキタ 付加ハンドルおよび付加ハンドルを備えた作業工具

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040163214A1 (en) * 2003-02-25 2004-08-26 Motomax Electric Co., Ltd. Assist handle for electric tools
EP1974867A1 (fr) * 2007-03-29 2008-10-01 Makita Corporation Poignées pour outils manuels
DE102009000598A1 (de) * 2008-02-15 2009-08-20 Robert Bosch Gmbh Schwingungsentkoppelter Handgriff
WO2009137808A1 (fr) * 2008-05-09 2009-11-12 Milwaukee Electric Tool Corporation Poignée auxiliaire pour outil à moteur
EP2163357A1 (fr) * 2008-09-15 2010-03-17 HILTI Aktiengesellschaft Poignée supplémentaire pour une machine-outil manuelle
US20100064482A1 (en) * 2008-09-15 2010-03-18 Hilti Aktiengesellschaft Auxiliary handle for hand-held power tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107107328A (zh) * 2014-12-19 2017-08-29 喜利得股份公司 附加手柄

Also Published As

Publication number Publication date
WO2014184222A1 (fr) 2014-11-20
EP2996842B1 (fr) 2019-10-09
US20160114472A1 (en) 2016-04-28
JP6151439B2 (ja) 2017-06-21
CN105392601A (zh) 2016-03-09
US9701007B2 (en) 2017-07-11
CN105392601B (zh) 2017-09-08
EP2996842A1 (fr) 2016-03-23
JP2016517807A (ja) 2016-06-20

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