EP3127658A1 - Poignee laterale - Google Patents

Poignee laterale Download PDF

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Publication number
EP3127658A1
EP3127658A1 EP15179926.9A EP15179926A EP3127658A1 EP 3127658 A1 EP3127658 A1 EP 3127658A1 EP 15179926 A EP15179926 A EP 15179926A EP 3127658 A1 EP3127658 A1 EP 3127658A1
Authority
EP
European Patent Office
Prior art keywords
handle
axis
leaf spring
along
damper
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Withdrawn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
EP15179926.9A
Other languages
German (de)
English (en)
Inventor
Adrian Steingruber
Oliver Ohlendorf
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 EP15179926.9A priority Critical patent/EP3127658A1/fr
Priority to PCT/EP2016/067764 priority patent/WO2017021210A1/fr
Priority to US15/749,735 priority patent/US10537984B2/en
Priority to EP16744724.2A priority patent/EP3331665B1/fr
Priority to CN201680045847.9A priority patent/CN107921617B/zh
Publication of EP3127658A1 publication Critical patent/EP3127658A1/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Withdrawn legal-status Critical Current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
    • B25F5/006—Vibration damping means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G1/00—Handle constructions
    • B25G1/01—Shock-absorbing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/04—Handles; Handle mountings
    • B25D17/043—Handles resiliently mounted relative to the hammer housing

Definitions

  • the present invention relates to a side handle for a hand tool.
  • a side handle is off EP 1674216 B1 known.
  • the side handle has a handle bar and a mounting mechanism.
  • the handlebar is connected by the attachment mechanism through a leaf spring bent into a ring.
  • the side handle for a hand tool has a handle bar disposed along a handle axis for holding the side handle with one hand, a mounting mechanism, and a damper.
  • the attachment mechanism for releasably securing the side handle to the power tool has a tensioning strap encompassing a mounting axis and a tensioning mechanism.
  • the clamping mechanism has a with the clamping band along the handle axis overlapping and relative to the clamping band along the handle axis displaceable collar, an anchored to the strap, along the handle axis sliding tie rod and rotatable about the handle axis and engaging in an external thread of the tie rod tensioning wheel.
  • the damper connects the handle bar with the attachment mechanism.
  • the damper has at least one inclined to the mounting axis oriented longitudinal side of a leaf spring, wherein the leaf spring has a slot extending along the handle axis.
  • a split pin is attached to the pull rod and engages in the slot of the leaf spring.
  • the sapwood of the tie rod secures the orientation of the leaf spring relative to the mounting axis, without affecting the damping behavior or affect a simple tool-free attachment with the tensioning wheel.
  • leaf spring is oriented perpendicular to the mounting axis; the split pin can be oriented longitudinally or parallel to the attachment axis.
  • the damper has a securing cage fixed to the handle bar, in which the leaf spring is arranged, wherein the cage has a along the handle axis extending slot, in which the split pin engages.
  • the safety cage protects the user in the event of a breakage of the leaf spring, as the handle bar is still connected to the attachment mechanism via the split pin and pull rod.
  • the safety cage may, in one embodiment, have an inclined inner surface whose distance to the longitudinal side of the leaf spring increases in the direction from the handlebar to the attachment mechanism. Further or alternatively, the tensioning wheel may have a protruding towards the handle bar hem which overlaps along the handle axis with the safety cage. The seam has a distance from the safety cage in the radial direction toward the handle axis. The embodiments limit a deflection of the leaf spring to avoid overloading without affecting the damping behavior of the leaf spring at a lower deflection.
  • the leaf spring has two longitudinal sides parallel to one another, which are connected to one another via transverse sides extending perpendicular to the handle axis.
  • the leaf spring has by the shape of an inherently high mechanical stability, especially against torsional loads on.
  • one of the transverse sides of the leaf spring has a hole on the handle axis and the clamping wheel resting against the transverse side has a nut which has a neck guided through the hole and a head engaging behind the hole.
  • the structure allows attachment of the leaf spring with a small number of components.
  • Fig. 1 and Fig. 2 show an exemplary side handle 1 in two longitudinal sections.
  • the side handle 1 has a handle bar 2 and a fixing mechanism 3, which is arranged on one side, at a proximal end 4 of the handle bar 2 .
  • the attachment mechanism 3 allows the side handle 1 to be attached to and detached from a hand tool 5 .
  • the user can grasp the handle bar 2 to hold and guide a hand tool in operation.
  • a damper 6 is arranged, which reduces transmission of vibrations of the power tool 5 on the handle bar 2 .
  • the handle bar 2 is an elongate rod that can be grasped by the user with one hand.
  • the longitudinal axis of the rod is referred to below as Griffachse 7 .
  • the handle bar 2 may have a handle portion whose diameter and length are preferably designed according to ergonomic aspects.
  • the exemplary handlebar 2 is rotationally symmetrical to the handle axis 7 .
  • the handle bar 2 can be bulbous or cylindrical or not symmetrical with a contour for the fingers.
  • the handle bar 2 may have a hollow, cylindrical base body 8 made of a hard plastic.
  • the main body 8 is preferably encapsulated with a jacket 9 made of a soft foam or elastomer.
  • the fastening mechanism 3 has a tension band 10 and a tensioning mechanism 11.
  • the tension band 10 is preferably a metal band bent into a loop, alternatively a textile band.
  • the tensioning band 10 aligns the side handle 1 on the handheld power tool 5 along a fastening axis 12 .
  • the attachment axis 12 is defined by the eye 13 of the tension band 10 .
  • the mounting axle 12 extends vertically through the center of the eye 13.
  • the user can the tensioning band defer 10 to the housing of the power tool 5 along the fastener axis 12, typically the side handle 1 is oriented with its mounting axis 12 parallel to a working axis of the power tool 5, for example, by placing the tension band 10 around a cylindrical portion near a tool holder.
  • the mounting axis 12 is located with the handle axis 7 in a plane; the attachment axis 12 is preferably perpendicular or at least more than 60 degrees to the handle axis 7 inclined.
  • the fastening mechanism 3 is offset from the handle bar 2 on the handle axis 7.
  • the lying on the handle axis 7 proximal end 4 of the handle bar 2 faces the attachment mechanism 3, a distal end 14 is remote from the attachment mechanism 3 .
  • the terms proximal and distal are derived from the intended arrangement of the side handle 1 on the hand tool 5 from.
  • the proximal end 4 is the closer to the handle axis 7 of the hand tool 5 and the attachment axis 12 closer end and the distal end 14 corresponding to the farther end.
  • the handle bar 2 and the handle axis 7 are typically perpendicular from the housing of the power tool 5 from.
  • the exemplary tensioning mechanism 11 spreads a portion 15 of the tension band 10 from the housing, thereby clamping the remaining portion to the housing.
  • the tensioning mechanism 11 has a collar 16 which partially overlaps with the eye 13 of the tension band 10 .
  • the strap 10 can be moved relative to the collar 16 along the handle axis 7 , so the overlap of the collar 16 increases with the eye 13 .
  • the free opening of the eye 13 is reduced, whereby the clamping band 10 is clamped to the housing.
  • the collar 16 has a remote from the handle bar 2 support surface 17, which is formed by way of example circular arc.
  • the support surface 17 may be formed complementary to the contour of the housing of the power tool 5 , but also be easily formed by one or more support struts, which create only selectively to the housing.
  • the exemplary collar 16 is cupped with two parallel arcuate support surfaces 17, between which there is a gap in the width of the tension band 10 .
  • the portion 15 of the tension band 10 extends partially between the support surfaces 17 in the
  • the clamping mechanism 11 has a tensioning wheel 18 and a tie rod 19, which move a portion of the collar 16 near 15 of the clamping band 10 relative to the collar sixteenth
  • the tensioning wheel 18 is rotatably mounted on the collar 16 about the handle axis 7 .
  • the tensioning wheel 18 is supported along the handle axis 7 at least in the direction of the tensioning band 10, ie the support surface 17 of the collar 16 , for example on a side 20 of the collar 16 facing the handlebar 2.
  • the tension rod 19 is arranged coaxially with the grip axis 7 and along this movable.
  • the pull rod 19 is anchored in the collar 16 near section 15 of the tension band 10 .
  • the drawbar 19 can not rotate relative to the clamping band 10 around the handle axis 7 .
  • the pull rod 19 is welded to the tension band 10 .
  • a head 21 of the pull rod 19 is positively caught in the collar 16 and movable only along the handle axis 7 .
  • the tension band 10 is also not rotatable relative to the collar 16 about the handle axis 7 .
  • the drawbar 19 has a worm thread or a similar toothing, in which a nut 22 of the tensioning wheel 18 engages. The user can rotate the tensioning wheel 18 by hand and move the pull rod 19 along the handle axis 7 . In this case, the section 15 is moved by the pull rod 19 relative to the collar 16 , possibly its overlap with the collar 16 is increased in order to clamp the other portion of the tension band 10 on the housing of the power tool 5 .
  • the handlebar 2 and the attachment mechanism 3 are interconnected by the intermediate damper 6 .
  • the damper 6 allows a relative deflection of the handle bar 2 with respect to the fastening mechanism 3 along the mounting axis 12, however, the damper 6 exerts a force counteracting the deflection.
  • the damper 6 includes a leaf spring 23 oriented along the handle axis 7 , whose distal portion 24 is fastened to the handle bar 2 and whose proximal portion 25 is attached to the attachment mechanism 3 .
  • the exemplary damper 6 includes a leaf spring 23 bent into a ring .
  • the leaf spring 23 has two longitudinal sides 26 that are substantially parallel to the handle axis 7 and perpendicular to the mounting axis 12 .
  • the two longitudinal sides 26 are connected by transversely extending substantially perpendicular to the handle axis 7 transverse sides 25, 24 .
  • One of the transverse sides 24 forms the distal portion of the leaf spring 23 and may for example be cast into the handle bar 2 or bolted to the handle bar 2 .
  • the other of the lateral sides 25 forms the proximal portion of the leaf spring 23 and is fixed to the attachment mechanism 3 .
  • the proximal transverse side 25 is held along the handle axis 7 from one side by the tensioning wheel 18 and from the other side by a nut 22 .
  • the proximal transverse side 25 has a lying on the handle axis 7 hole 27.
  • the pull rod 19 extends through the hole 27 and engages with its external thread in the internal thread of the nut 22 a.
  • the pull rod 19 connects the nut 22, the proximal transverse side 24 and thus the leaf spring 23, the tensioning wheel 18, the collar 16 and the strap 10 to a coherent unit.
  • the nut 22 has a head 28 and a neck 29.
  • the head has a larger diameter to the hole 27 ; the neck 29 has a diameter equal to the hole 27 .
  • the head 28 abuts against the proximal transverse side 25 ; the neck 29 protrudes through the hole 27.
  • the tensioning wheel 18 is rotatably connected to the neck 29 .
  • the neck 29 has a flat key surface or otherwise asymmetric to the handle axis 7 shape. The rotation of the tensioning wheel 18 is transmitted to the nut 22 and moves the pull rod 19 along the handle axis 7.
  • the longitudinal sides 26 of the leaf spring 23 are perpendicular to the mounting axis 12.
  • the longitudinal sides 26 are flat and parallel to each other.
  • the longitudinal sides 26 are each provided with a longitudinal axis of the handle 7 extending slot 30 .
  • a split pin 31 engages in the two slots 30 .
  • the splint 31 is also in the pull rod 19.
  • the split pin 31 prevents rotation of the damper 6 relative to the pull rod 19 to the handle axis 7. This ensures that the longitudinal sides 26 perpendicular to the mounting axis 12, along which a damping is to take place, oriented are.
  • the leaf spring 23 can be C-shaped, ie with a longitudinal side 26 and a distal transverse side 24 and a proximal transverse side 25. Further, the leaf spring can be folded several times to obtain more than two parallel longitudinal sides.
  • the damper 6 may have a safety cage 32 .
  • the safety cage 32 is attached to the handle bar 2 .
  • the exemplary safety cage 32 is a hollow cylinder or a hollow, blunt cone.
  • the safety cage 32 may be open on a side 20 facing the fastening mechanism 3 .
  • the leaf spring 23 is disposed within the fuse cage 32 .
  • the leaf spring 23 is spaced in the unloaded state of the inner surfaces 33 of the securing cage 32 .
  • a distance of the inner surfaces 33 to the leaf spring 23 may increase along the handle axis 7 from the handle bar 2 to the attachment mechanism 3 . If a deflection of the handlebar 2 with respect to the attachment mechanism 3 exceeds a critical deflection, the leaf spring 23 bears against the inner surface 33 .
  • the leaf spring 23 is thus protected against overstress along the mounting axis 12 .
  • the tensioning wheel 18 may have a longitudinal edge 7 of the protruding seam 34 which overlaps along the handle axis 7 with the securing cage 32 .
  • the seam 34 encloses the safety cage 32.
  • the seam 34 is radially, relative to the handle axis 7, spaced from the safety cage 32 so as not to influence the damping behavior of the damper 6 .
  • the radial distance of the securing cage 32 to the seam 34 is selected such that upon excessive deflection of the handle bar 2 with respect to the fastening mechanism 3, the securing cage 32 abuts against the seam 34 .
  • the leaf spring 23 is thus protected against overstress along the mounting axis 12 .
  • the safety cage 32 has two grooves 35 or slots along the handle axis 7 .
  • the grooves 35 are opposed to the slots 30 of the leaf spring 23 .
  • the split pin 31 engages in the grooves 35 .
  • the safety cage 32 secures the handle bar 2 to the pull rod 19 and the attachment mechanism 3, respectively, and protects the user from sudden and complete failure of the side handle 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)
EP15179926.9A 2015-08-06 2015-08-06 Poignee laterale Withdrawn EP3127658A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP15179926.9A EP3127658A1 (fr) 2015-08-06 2015-08-06 Poignee laterale
PCT/EP2016/067764 WO2017021210A1 (fr) 2015-08-06 2016-07-26 Poignée latérale
US15/749,735 US10537984B2 (en) 2015-08-06 2016-07-26 Side handle
EP16744724.2A EP3331665B1 (fr) 2015-08-06 2016-07-26 Poignee laterale
CN201680045847.9A CN107921617B (zh) 2015-08-06 2016-07-26 侧向把手

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15179926.9A EP3127658A1 (fr) 2015-08-06 2015-08-06 Poignee laterale

Publications (1)

Publication Number Publication Date
EP3127658A1 true EP3127658A1 (fr) 2017-02-08

Family

ID=53783136

Family Applications (2)

Application Number Title Priority Date Filing Date
EP15179926.9A Withdrawn EP3127658A1 (fr) 2015-08-06 2015-08-06 Poignee laterale
EP16744724.2A Active EP3331665B1 (fr) 2015-08-06 2016-07-26 Poignee laterale

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP16744724.2A Active EP3331665B1 (fr) 2015-08-06 2016-07-26 Poignee laterale

Country Status (4)

Country Link
US (1) US10537984B2 (fr)
EP (2) EP3127658A1 (fr)
CN (1) CN107921617B (fr)
WO (1) WO2017021210A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3597370A1 (fr) * 2018-07-17 2020-01-22 Hilti Aktiengesellschaft Poignée et machine-outil manuelle
US11433524B2 (en) * 2018-12-19 2022-09-06 George E. Westinghouse Vibration reducing extension system
USD907457S1 (en) * 2019-07-23 2021-01-12 Ogura & Co., Ltd. Control lever for a power tool
US11607795B2 (en) * 2019-12-13 2023-03-21 Kenneth J. Brauer Rotating handle and related methods
US11583992B2 (en) * 2021-03-25 2023-02-21 Milwaukee Electric Tool Corporation Side handle for power tool

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1514648A2 (fr) * 2003-09-10 2005-03-16 Makita Corporation Manche sans vibration
EP1674216B1 (fr) 2004-12-21 2008-05-07 HILTI Aktiengesellschaft Poignée latérale
EP2159009A1 (fr) * 2008-08-27 2010-03-03 Metabowerke Gmbh Adaptateur pour poignée supplémentaire et poignée supplémentaire
EP2241408A1 (fr) * 2009-04-17 2010-10-20 HILTI Aktiengesellschaft Poignée latérale

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
DE10005080C1 (de) * 2000-02-04 2001-08-02 Bosch Gmbh Robert Handwerkzeugmaschine mit zumindest einem Handgriff und wenigstens einem elastischen, schwingungsdämpfenden Element
CN2537524Y (zh) * 2002-04-30 2003-02-26 苏州宝时得电动工具有限公司 带有至少一个手柄的电动工具机
DE10347944B4 (de) * 2003-10-15 2016-11-10 Robert Bosch Gmbh Zusatzhandgriff
DE102007037081A1 (de) * 2007-08-06 2009-02-12 Robert Bosch Gmbh Zusatzhandgriffvorrichtung
EP2123406B1 (fr) * 2008-05-19 2011-12-21 AEG Electric Tools GmbH Support à vibrations amorties pour poignée supplémentaire
DE202010002296U1 (de) * 2010-02-11 2011-08-26 Illinois Tool Works Inc. Handgriffanordnung
CN201776745U (zh) * 2010-08-04 2011-03-30 上海锐奇工具股份有限公司 弹簧式减震手柄
DE102012212803B4 (de) * 2012-07-20 2023-05-17 Robert Bosch Gmbh Handwerkzeugzusatzhandgriff
US9308638B2 (en) * 2013-01-17 2016-04-12 Seiko Epson Corporation Power tool and auxiliary handle member
CN203344013U (zh) * 2013-06-28 2013-12-18 浙江海王电器有限公司 一种减振手柄及其所应用的电动工具
CN203680249U (zh) * 2014-01-16 2014-07-02 福建惠安县坚固电机有限公司 一种电动工具的新型减震手柄

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1514648A2 (fr) * 2003-09-10 2005-03-16 Makita Corporation Manche sans vibration
EP1674216B1 (fr) 2004-12-21 2008-05-07 HILTI Aktiengesellschaft Poignée latérale
EP2159009A1 (fr) * 2008-08-27 2010-03-03 Metabowerke Gmbh Adaptateur pour poignée supplémentaire et poignée supplémentaire
EP2241408A1 (fr) * 2009-04-17 2010-10-20 HILTI Aktiengesellschaft Poignée latérale

Also Published As

Publication number Publication date
US10537984B2 (en) 2020-01-21
EP3331665B1 (fr) 2019-05-15
CN107921617B (zh) 2021-04-16
WO2017021210A1 (fr) 2017-02-09
CN107921617A (zh) 2018-04-17
US20180229356A1 (en) 2018-08-16
EP3331665A1 (fr) 2018-06-13

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