EP3043967B1 - Machine-outil manuelle - Google Patents

Machine-outil manuelle Download PDF

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Publication number
EP3043967B1
EP3043967B1 EP14758866.9A EP14758866A EP3043967B1 EP 3043967 B1 EP3043967 B1 EP 3043967B1 EP 14758866 A EP14758866 A EP 14758866A EP 3043967 B1 EP3043967 B1 EP 3043967B1
Authority
EP
European Patent Office
Prior art keywords
handle
axis
suspension
working axis
hand
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.)
Active
Application number
EP14758866.9A
Other languages
German (de)
English (en)
Other versions
EP3043967A1 (fr
Inventor
Michael Weber
Stefan Schmid
Markus Holubarsch
Axel Fischer
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 EP14758866.9A priority Critical patent/EP3043967B1/fr
Publication of EP3043967A1 publication Critical patent/EP3043967A1/fr
Application granted granted Critical
Publication of EP3043967B1 publication Critical patent/EP3043967B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • B25D17/24—Damping the reaction force
    • 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
    • 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
    • B25D2250/371—Use of springs

Definitions

  • a hand tool according to the preamble of claim 1 is known from EP 1 510 300 A2 known.
  • GB 2 171 045 A has a guided parallel to a working direction handle in a hand tool.
  • compression springs and a spring system of levers and other springs are disposed between a housing and the handle. The forces of the compression springs and the spring system add up and work together in parallel to the working direction.
  • the hand tool of the invention has a tool holder for receiving a chiselling, drilling or drilling chiseling tool and a striking mechanism.
  • the percussion mechanism is arranged in a machine housing.
  • a handle is oriented along a tilted to the working axis, inclined by at least 70 degrees or perpendicular handle axis and applied with three suspensions on the machine housing.
  • the first suspension is located closer to the working axis than the second suspension.
  • the third suspension is offset from the first suspension and the second suspension along the working axis, for example offset in the direction of impact.
  • the second suspension has a lever arm extending along the handle axis.
  • the first end of the lever arm is attached to one of the machine housing and handle.
  • a guide is attached to the other of the machine housing and handle.
  • the second end of the lever arm is forced in the guide on a tilted or perpendicular to the working axis path against a spring device deflected.
  • the arrangement of the three suspensions is particularly suitable for a hand tool, the focus is outside the working axis.
  • the first suspension may be located closer to the working axis than the second suspension.
  • the third suspension can be advantageously arranged at the height of the intermediate racket.
  • the percussion has successively arranged on the working axis in the direction of impact a racket and an intermediate racket.
  • the intermediate bat lies between the bat and the tool.
  • the intermediate beater viewed from the handle, is typically clearly behind the center of gravity along the working axis.
  • the chisel hammer 1 strikes the chisel 4 continuously in the direction of impact 10 along the working axis 11 into a substrate.
  • the tool holder 2 may additionally be rotationally driven by the motor 5 about the working axis 11 .
  • the motor 5 , the percussion 6 and other drive components of the chisel hammer 1 are arranged in a continuous, one-piece or multi-part machine housing 18 .
  • a center of gravity 19 of the machine housing 18 with the drive components 5 , 6 is due to the off-axis arrangement of the motor 5 outside the working axis 11 on the side of the motor fifth
  • a motor shaft 20 is located outside the working axis 11 , the two axes 11 , 20 span a plane, hereinafter main plane on.
  • the two axes 11 , 20 may be inclined to each other, for example, be vertical.
  • a center of the handle bar 21 is displaced along the handle axis 22 of the working axis 11 in the direction of the center of gravity 19 .
  • the center can lie along the handle axis 22 at the height of the center of gravity 19 .
  • the handle bar 21 may have an ergonomic surface adapted to the palm.
  • the handle 7 is attached to the machine housing 18 with three suspensions 24 , 25 , 26 .
  • the three suspensions 24 , 25 , 26 allow the machine housing 18 to be guided by means of the handle 7 .
  • the suspensions 24 , 25 , 26 mediate the movements in the main plane from the machine housing 18 to the handle 7 , and vice versa.
  • a movement perpendicular to the main plane is preferably inhibited by one of the suspensions 24 , 25 , 26 or to the main plane parallel, mutually contacting surfaces of the machine housing 18 and handle 7 .
  • the first suspension 24 is disposed near the working axis 11 .
  • the first suspension 24 is on the side of the working axis 11 facing away from the center of gravity 19 .
  • the first suspension 24 is preferably arranged in the direction of impact 10 in front of the machine housing 18 .
  • the first suspension 24 preferably has a pure force coupling, at least in the planes parallel to the main plane.
  • the spring element 30 may be provided with a bias along the working axis 11 such that the handle 7 is pressed against the direction of impact 10 of the machine housing 18 .
  • the second suspension 25 is arranged offset along the handle axis 22 relative to the first suspension 24 .
  • the second suspension 25 is on the side of the working axle 11 facing away from the center of gravity 19 .
  • the second suspension 25 preferably has a pure force coupling, at least in the planes parallel to the main plane.
  • the second suspension 25 imparts a transverse force perpendicular to the working axis 11 between the handle 7 and the machine housing 18 .
  • the second suspension 25 may be a force parallel to the working axis 11 between the Exercise machine housing 18 and the handle 7 and convey.
  • the second suspension 25 is preferably arranged in the direction of impact 10 in front of the machine housing 18 .
  • the lever arm 31 is oriented substantially along the handle axis 22 .
  • the lever arm 31 is inclined for example between 70 degrees and 90 degrees with respect to the working axis 11 .
  • the attached to the handle 7 here first end 32 is disposed closer to the working axis 11 than the second end 33rd
  • the lever arm 31 is preferably formed as a leaf spring.
  • the lever arm 31 is almost stiff in a direction parallel to the handle axis 22 , so under pressure and tensile load.
  • the lever arm 31 is elastically yielding parallel to the working axis 11 , ie at a bending load.
  • the track 36 of the guide 34 is for example rectilinear and inclined relative to the working axis 11 .
  • the inclination of the guide 34 with respect to the axis 11 is between 45 degrees and 90 degrees, for example between 70 degrees and 90 degrees.
  • the web can be straight as illustrated.
  • a curved track 36 may be advantageous in order to obtain the right angle between the working axis 3 and the handle axis 22 as possible during spring movements by the feed force and by the dynamic deflections.
  • the guide 34 has a carriage 37 whose outer dimension perpendicular to the track 36 is equal to the inner dimension 38 of the guide 34 .
  • the suspended end 33 may be pivotally suspended in the guide 34 about an axis of rotation 39 extending through the end 33 and perpendicular to the main plane.
  • the carriage 37 is provided with a pivot bearing 40 to which the end 33 is rotatably suspended.
  • the second suspension 25 may include a spring means 41 which provides a restoring force against deflection of the guided end 33 from a home position.
  • the spring device 41 may, for example, springs made of an elastomer 42 , foam, leaf springs or coil springs included.
  • the use of progressive spring elements has the advantage that at high forces along the handle axis 22, the function is fulfilled even with a small gap between the housing shell 23 and machine housing 18 .
  • the spring device 41 can, as shown, be arranged spatially in the guide 34 , or arranged outside the guide 34 .
  • the spring device 41 is loaded only along the path 36 and can be designed independently.
  • a force acting on the second suspension 25 eg due to a torque acting on the center of gravity 19 , divides the guide 34 into a first component along the track 36 and a second component parallel to the working axle 11 .
  • the spring device 41 damps the first component, while the lever arm 31 substantially does not influence it.
  • the lever arm 31 can damp the second component.
  • a spring constant of the lever arm 31 acting parallel to the working axis 11 may be smaller by one order of magnitude than a spring constant of the spring element 30 of the first suspension 24 acting parallel to the working axis 11 .
  • the second component is therefore mediated mainly via the first suspension 24 between the machine housing 18 and handle 7 .
  • the axis of rotation 44 is offset in the direction of impact 10 to the center of gravity 19 of the machine housing 18th
  • the linear guide 35 runs parallel to the working axis 11 .
  • the Machine housing 18 is thus movable parallel to the working axis 11 and about the rotational axis 44 pivotally relative to the handle 7.
  • the third suspension 26 may be formed by a ring 45 on the handle 7 , in which the machine housing 18 is inserted axially movable ( Fig. 3 ).
  • the inner surface 46 of the ring 45 is convexly curved.
  • the machine housing 18 can tilt in the ring 45 with respect to this about the rotation axis 39 .
  • the rotation axis 39 passes through the center of the ring 45 .
  • the closed housing shell 23 of the handle 7 may have a cylindrical portion 47 near the tool holder 2 .
  • the auxiliary handle 9 may be attached to the cylindrical portion 47 .
  • the additional handle 9 is preferably detachable without tools from the housing shell 23 , for example, to orient the additional handle 9 new relative to the handle axis 22 .
  • the auxiliary handle 9 is indirectly suspended vibration-damped by the three suspensions 24 , 25 , 26 of the handle 7 on the machine housing 18 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)

Claims (12)

  1. Machine-outil manuelle comportant :
    un porte-outil (2) pour recevoir un outil (4) sur un axe de travail (11),
    un mécanisme de percussion (6) qui comporte un percuteur (13) sur l'axe de travail (11), lequel percuteur (13) agit sur l'outil dans une direction d'impact (10),
    un boîtier de machine (18) dans lequel est agencé le mécanisme de percussion (6),
    une poignée (7) qui est orientée le long d'un axe de poignée (22) incliné par rapport à l'axe de travail (11) et qui est installée sur le boîtier de machine (18) avec trois suspensions (24, 25, 26),
    dans laquelle la première suspension (24) est agencée plus près de l'axe de travail (11) que la deuxième suspension (25),
    la troisième suspension (26) est agencée de manière décalée par rapport à la première suspension (24) et à la deuxième suspension (25) le long de l'axe de travail (11),
    dans laquelle la deuxième suspension (25) comporte un bras de levier (31) s'étendant le long de l'axe de poignée (22), dont la première extrémité (32) est fixée à un élément parmi le boîtier de machine (18) et la poignée (7), et
    caractérisée en ce que
    la deuxième suspension (25) comporte un guide (34) qui est fixé sur l'autre élément parmi le boîtier de machine (18) et la poignée (7), dans laquelle une seconde extrémité (33) du bras de levier (31) peut pivoter dans le guide (34) sur une trajectoire (36) perpendiculaire ou inclinée par rapport à l'axe de travail (11) de manière contrainte contre un dispositif à ressort (41).
  2. Machine-outil manuelle selon la revendication 1, caractérisée en ce que le bras de levier (31) est configuré élastiquement le long de l'axe de travail (11).
  3. Machine-outil manuelle selon la revendication 1, caractérisée en ce que le bras de levier (31) est formé à partir d'un ressort à lames.
  4. Machine-outil manuelle selon la revendication 2 ou 3, caractérisée en ce que le bras de levier (31) est précontraint pour tirer la poignée (7) dans la direction d'impact (10) vers le boîtier de machine (18).
  5. Machine-outil manuelle selon la revendication 1, caractérisée en ce qu'au moins une des deux extrémités (32, 33) du bras de levier (31) est munie d'un palier rotatif (40).
  6. Machine-outil manuelle selon la revendication 5, caractérisée en ce que la seconde extrémité (33) du bras de levier (31) peut pivoter autour d'un axe de rotation (39) qui est perpendiculaire à un plan défini par l'axe de travail (11) et l'axe de poignée (22).
  7. Machine-outil manuelle selon l'une des revendications précédentes, caractérisée en ce que la première suspension (24) comporte un élément à ressort (30) qui est précontraint pour repousser la poignée (7) à l'encontre de la direction d'impact (10) à partir du boîtier de machine (18).
  8. Machine-outil manuelle selon l'une des revendications précédentes, caractérisée en ce que la troisième suspension (26) comporte un guide linéaire (35) parallèle à l'axe de travail (11) et un palier rotatif (43) agencé dans le guide linéaire (35), dont l'axe de rotation (44) est perpendiculaire à un plan défini par l'axe de travail (11) et l'axe de poignée (22).
  9. Machine-outil manuelle selon la revendication 8, caractérisée en ce que l'axe de travail (11) et l'axe de rotation (44) se situent dans un plan.
  10. Machine-outil manuelle selon la revendication 8 ou 9, caractérisée en ce que la troisième suspension (26) est agencée le long de l'axe de travail (11) à la hauteur d'un palier intermédiaire (17).
  11. Machine-outil manuelle selon la revendication 6, caractérisée en ce que la seconde extrémité (33) du bras de levier (31) est supportée d'un côté ou des deux côtés par un élément à ressort (38).
  12. Machine-outil manuelle selon la revendication 11, caractérisée en ce qu'un élément à ressort (38), ou les deux, sont configurés avec une caractéristique de ressort progressive.
EP14758866.9A 2013-09-12 2014-09-02 Machine-outil manuelle Active EP3043967B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14758866.9A EP3043967B1 (fr) 2013-09-12 2014-09-02 Machine-outil manuelle

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP20130184071 EP2848370A1 (fr) 2013-09-12 2013-09-12 Machine-outil manuelle
PCT/EP2014/068571 WO2015036279A1 (fr) 2013-09-12 2014-09-02 Machine-outil portative
EP14758866.9A EP3043967B1 (fr) 2013-09-12 2014-09-02 Machine-outil manuelle

Publications (2)

Publication Number Publication Date
EP3043967A1 EP3043967A1 (fr) 2016-07-20
EP3043967B1 true EP3043967B1 (fr) 2017-07-19

Family

ID=49223562

Family Applications (2)

Application Number Title Priority Date Filing Date
EP20130184071 Withdrawn EP2848370A1 (fr) 2013-09-12 2013-09-12 Machine-outil manuelle
EP14758866.9A Active EP3043967B1 (fr) 2013-09-12 2014-09-02 Machine-outil manuelle

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP20130184071 Withdrawn EP2848370A1 (fr) 2013-09-12 2013-09-12 Machine-outil manuelle

Country Status (5)

Country Link
US (1) US10406668B2 (fr)
EP (2) EP2848370A1 (fr)
CN (1) CN105555485B (fr)
ES (1) ES2637198T3 (fr)
WO (1) WO2015036279A1 (fr)

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JP6620434B2 (ja) * 2015-06-12 2019-12-18 マックス株式会社 打撃工具
EP3501750A1 (fr) 2017-12-19 2019-06-26 Hilti Aktiengesellschaft Machine-outil portative à vibrations amorties
US12021437B2 (en) 2019-06-12 2024-06-25 Milwaukee Electric Tool Corporation Rotary power tool
EP3822036A1 (fr) * 2019-11-12 2021-05-19 Hilti Aktiengesellschaft Agencement de mécanisme de frappe
DE102020216538A1 (de) 2020-12-23 2022-06-23 Robert Bosch Gesellschaft mit beschränkter Haftung Handwerkzeugmaschine
JP2022119301A (ja) * 2021-02-04 2022-08-17 株式会社マキタ 打撃工具
JP2022128006A (ja) * 2021-02-22 2022-09-01 株式会社マキタ 打撃工具
CN115648129B (zh) * 2022-10-29 2024-06-21 江苏东成工具科技有限公司 冲击电动工具

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JP4157382B2 (ja) 2001-04-11 2008-10-01 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング 振動減衰式のハンドグリップを備えた手持ち工作機械
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Also Published As

Publication number Publication date
EP3043967A1 (fr) 2016-07-20
WO2015036279A1 (fr) 2015-03-19
US10406668B2 (en) 2019-09-10
CN105555485A (zh) 2016-05-04
ES2637198T3 (es) 2017-10-11
CN105555485B (zh) 2017-10-17
EP2848370A1 (fr) 2015-03-18
US20160207188A1 (en) 2016-07-21

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