EP2086726B1 - Machine-outil à main avec une poignée amortie des vibrations et pourvue d'un commutateur - Google Patents

Machine-outil à main avec une poignée amortie des vibrations et pourvue d'un commutateur Download PDF

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Publication number
EP2086726B1
EP2086726B1 EP07820070A EP07820070A EP2086726B1 EP 2086726 B1 EP2086726 B1 EP 2086726B1 EP 07820070 A EP07820070 A EP 07820070A EP 07820070 A EP07820070 A EP 07820070A EP 2086726 B1 EP2086726 B1 EP 2086726B1
Authority
EP
European Patent Office
Prior art keywords
switch
power tool
housing
bow
portable power
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.)
Not-in-force
Application number
EP07820070A
Other languages
German (de)
English (en)
Other versions
EP2086726A1 (fr
Inventor
Gerhard Meixner
Uwe Engelfried
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2086726A1 publication Critical patent/EP2086726A1/fr
Application granted granted Critical
Publication of EP2086726B1 publication Critical patent/EP2086726B1/fr
Not-in-force 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
    • 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
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/371—Use of springs

Definitions

  • the present invention relates to a hand tool, in particular a drill and / or percussion hammer, with a housing and a vibration-damped, with respect to the housing movable and resiliently supported U-shaped bow handle.
  • a hand tool machine which has a vibration-damped, supported by springs in relation to the housing strap handle.
  • extensions of two leg portions of the strap handle extend into a cavity of the housing where they act via connectors on pivot arms whose movement is damped by springs.
  • the two pivot arms connected by a coupling member in the form of an axis.
  • Within the hollow handle there is arranged a switch for switching on and off the power tool.
  • the present invention seeks to find a solution that allows to fit the bow handle of hand tool of the type mentioned with a switch, without affecting the function of a arranged in the region of the switch coupling member.
  • a preferred embodiment of the invention provides that the coupling member is formed on a part of its length as a laterally open hollow profile, while the rest of the coupling member may be formed either as a solid component or as a hollow profile closed on all sides to give the coupling member a high bending stiffness.
  • the coupling member is formed at least over part of its length as a rectangular box profile, the opposite side cheeks are expedient aligned parallel to each other and adjacent outer sides of the switch housing, while the bottom of the box profile is disposed on the side facing away from the switch housing of the coupling member.
  • the switch housing can dive far into the coupling member, which in its longitudinal direction despite the recess has a high bending stiffness and therefore allows the transmission of considerable contact forces from the strap handle into the housing of the power tool.
  • the switch is disposed in the vicinity of a pivot joint of the coupling member, where this is supported within the handle and stiffened by the support and where the movement path of the coupling member during a relative movement of the strap handle with respect to the hand tool least is, which can reduce the depth of immersion of the switch housing in the recess and thus also their depth.
  • the coupling member advantageously has two aligned, coaxial to the pivot axis of the pivot bearing pivot pin, which over the opposite Projecting side cheeks of the box section and each protrude into opposite bearing openings of the strap handle.
  • the switch is inserted into an opening of the housing of the machine tool facing the front boundary wall of the strap handle and has a projecting beyond the yoke of the strap handle, against the force of a spring in relation to the switch housing pivotable actuator which in a handle opening between the strap handle and the Housing protrudes.
  • Hand-held power tool 2 shown schematically in the form of a hammer drill or a percussion hammer consists essentially of a housing 4, a tool holder 6 for receiving a tool 8, and a drive device (not shown) enclosed by the housing 4 for rotating and beating driving of the tool holder 6 Tool 8.
  • the drive device consists in a known manner of an electric drive motor which rotatably drives the tool holder 6 via a reduction or manual transmission, and also from the drive motor driven striking mechanism with which the tool 8 can be acted upon in the tool holder 6 with a force acting in a working direction A of the machine tool 2 impact force.
  • the housing 4 is provided at its end facing away from the tool holder 6 front end with a strap handle 10 which is used together with a near the tool holder 6 at 12 releasably attached to the housing 4 auxiliary handle 14 for gripping and holding the machine tool 2.
  • the hanger handle 10 encloses together with the housing 4 a handle opening 16 for a hand of an operator and facilitates especially in vertical operation, ie vertical working direction A and downwardly directed tool 8, the holding and guiding the machine tool 2, while the auxiliary handle 14 is preferred is used in horizontally oriented or flat inclined working direction A.
  • the bow-shaped handle 10 On its side facing the handle opening 16, the bow-shaped handle 10 is provided with a switch 18 with which the hand-held power tool 2 can be switched on and off without letting go of the handle 10.
  • the housing 4 has two parallel, rearwardly to over the rear end face of the housing 4 projecting projections 20, 22 which are rigidly connected to the housing 4 and project into the hollow interior of the strap handle 10.
  • the hanger handle 10 consists essentially of a direction perpendicular to the working direction A of the power tool 2 hollow yoke 24, which is taken for use of the power tool 2 by the user with one hand, and two parallel to the working direction A of the power tool 2 hollow leg portions 26, 28, the their ends adjacent to the housing 4 are open, so that the extensions 20, 22 of the housing 4 in the leg portions 26, 28 can dip.
  • the hanger handle 10 In order to avoid that, for example, caused by the percussion of the machine tool 2 vibrations of the housing 4 are transmitted to the hanger handle 10, which felt by the operator not only unpleasant is, but may also have health effects after prolonged exposure, dive the two extensions 20, 22 of the housing 4 with large lateral play S in the hollow leg portions 26, 28 of the hanger handle 10 a.
  • the hanger handle 10 is not supported directly on the extensions 20, 22 or on the housing 4, but via a helical compression spring 30, which provides for a vibration isolation between the hanger handle 10 and the housing 4.
  • the two elongate coupling members 34, 36 are housed in the hollow interior of the yoke portion 24 of the strap handle 10, wherein they are generally aligned transversely to the working direction A and the longitudinal center plane 32 of the power tool 2.
  • Each of the two coupling members 34, 36 is designed as a two-armed lever which is mounted in the vicinity of its center in a pivot joint 38 and 40, so that it is pivotable with respect to the bow handle 10.
  • the front end of each coupling member 34, 36 pointing away from the longitudinal center plane 32 is articulated at the free end of the adjacent extension 20 or 22 via a pivot joint 42, 44, while the opposite inner end ends of the coupling members 34, 36 form a fork joint 46.
  • the front end of a coupling member 34 is formed as a fork 48, in which a spherical thickening 50 at the front end of the other coupling member 36 engages movable.
  • the fork joint 46 allows a certain longitudinal displacement of the two coupling members 34, 36 with respect to each other when they are pivoted in a relative movement between the strap handle 10 and the housing 4 about the pivot axes of the pivot joints 38 and 40.
  • the coupling member 36 is formed as a solid coupling rod, which is provided not only at its inner end but to form the pivot joints 40, 44 in the middle and at the outer end with a thickening
  • the coupling member 34 is on a portion of its length between his outer, hinged to the extension 20 front end and its inner, fork-shaped front end as a hollow hollow box profile open on one side with two parallel side walls 54 and a perpendicular bottom 56 formed as in Fig. 3 shown.
  • pivot joint 40 comprises a projecting into the hollow interior of the strap handle 10 projection 51 of the housing 4 facing the front boundary wall 52 of the yoke 24, while the pivot joint 38 of the coupling member 34 has two opposing aligned cylindrical bearing openings 62 in opposite boundary wall parts of the strap handle 10 and two outwardly beyond the side walls 54 projecting journals 60 which project into the bearing openings 62.
  • the two side walls 54 and the bottom 56 define a rectangular cross-section, the front boundary wall 52 of the yoke 24 open towards recess 58 which receives the inwardly beyond the boundary wall 52 protruding switch housing 64 of the switch 18 in such a manner that the pivoting movement of the Coupling member 34 is not hindered by the switch 18.
  • the recess 58 extends from the pivot joint 38, the pivot axis 66 passes through the switch housing 64, on both sides slightly beyond the opposite end faces of the switch housing 64 addition.
  • the switch housing 64 In order to fix the switch 18 on the strap handle 10 so that its switch housing 64 projects into the hollow interior of the yoke 24 and into the recess 58 of the coupling member 34 and a tilting or pivoting with respect to the switch housing 64 actuator 68 of the switch 18 to the outside over the boundary wall 52 protrudes into the handle opening 16, the switch housing 64 on its side adjacent to the actuator 68 side a cover plate 70, the outer edge over the longitudinal sides and the end faces of the housing 64 projects and during assembly of the switch 18 in Ironing handle 10 is inserted into a complementary recess 72 which is recessed in an edge of an opening for receiving the switch 18 serving opening 74 in the boundary wall 52.
  • this consists of two mirror-image half shells 76, 78, the assembled after insertion of the coupling members 34, 36 and the switch 18 in one of the two half shells 76, 78 and then welded together along a center plane 80 of the hanger handle 10, as in FIG Fig. 3 shown.
  • the invention can also be used in an analogous manner in the case of a hand tool machine whose bow handle is like that of the hand tool machine Figure 2 of the DE 101 38 123 A1 only has a partially projecting into the handle coupling member.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Claims (10)

  1. Machine-outil à main (2), notamment marteau perforateur et/ou percuteur, comprenant un boîtier (4) et une poignée à anse (10) au moins partiellement creuse en forme de U, avec une partie d'âme (24) et deux parties de branches parallèles (26, 28), qui est supportée de manière mobile et élastique pour l'amortissement des vibrations par rapport au boîtier (10), et au moins un organe d'accouplement (34, 36) pour la synchronisation des mouvements des deux parties de branche (26, 28), qui est monté complètement ou partiellement à l'intérieur de la poignée à anse (10), la poignée à anse (10) étant pourvue à proximité de l'organe d'accouplement (34) d'un commutateur (18), caractérisée en ce que l'organe d'accouplement (34) présente un évidement (58) pour recevoir un boîtier de commutateur (64) du commutateur (18) saillant à l'intérieur de la poignée à anse (10).
  2. Machine-outil à main selon la revendication 1, caractérisée en ce que l'organe d'accouplement (34) est réalisé au moins sur une partie de sa longueur sous forme de profilé creux ouvert latéralement.
  3. Machine-outil à main selon la revendication 1 ou 2, caractérisée en ce que l'organe d'accouplement (34) est réalisé au moins sur une partie de sa longueur sous forme de profilé rectangulaire en forme de caisson (54, 56).
  4. Machine-outil à main selon la revendication 3, caractérisée en ce que des côtés opposés du boîtier de commutateur (58) sont orientés parallèlement l'un à l'autre et parallèlement à deux parois latérales opposées (54) du profilé en forme de caisson (54, 56).
  5. Machine-outil à main selon l'une quelconque des revendications précédentes, caractérisée en ce que le commutateur (18) est disposé à proximité d'une articulation pivotante (38) de l'organe d'accouplement (34).
  6. Machine-outil à main selon l'une quelconque des revendications précédentes, caractérisée en ce que le commutateur (18) est inséré dans une ouverture (74) d'une paroi de limitation (52) de la poignée à anse (10).
  7. Machine-outil à main selon la revendication 6, caractérisée en ce que le commutateur (18) est inséré dans une ouverture (74) dans une paroi de limitation avant (52) de la poignée à anse (10), tournée vers le boîtier (4) de la machine-outil (2).
  8. Machine-outil à main selon la revendication 7, caractérisée en ce qu'un élément de commande (68) du commutateur (18) pénètre dans une ouverture d'engagement (16) limitée par la poignée à anse (10) et par le boîtier (4).
  9. Machine-outil à main selon l'une quelconque des revendications 5 à 8, caractérisée en ce que l'articulation pivotante (38) comprend deux ouvertures de palier cylindriques alignées (62) dans des parties de paroi de limitation de la poignée à anse (10), et deux tourillons pivotants (60) venant en prise dans les ouvertures de palier (62), dépassant vers des côtés opposés au-dessus de l'organe d'accouplement (34).
  10. Machine-outil à main selon l'une quelconque des revendications 5 à 9, caractérisée en ce que l'articulation pivotante (38) présente un axe de pivotement (66) traversant le boîtier de commutateur (64).
EP07820070A 2006-11-03 2007-09-07 Machine-outil à main avec une poignée amortie des vibrations et pourvue d'un commutateur Not-in-force EP2086726B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006051924A DE102006051924A1 (de) 2006-11-03 2006-11-03 Handwerkzeugmaschine mit einem vibrationsgedämpften, mit einem Schalter versehenen Handgriff
PCT/EP2007/059415 WO2008052832A1 (fr) 2006-11-03 2007-09-07 Machine-outil à main avec une poignée amortie des vibrations et pourvue d'un commutateur

Publications (2)

Publication Number Publication Date
EP2086726A1 EP2086726A1 (fr) 2009-08-12
EP2086726B1 true EP2086726B1 (fr) 2010-01-13

Family

ID=38820323

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07820070A Not-in-force EP2086726B1 (fr) 2006-11-03 2007-09-07 Machine-outil à main avec une poignée amortie des vibrations et pourvue d'un commutateur

Country Status (6)

Country Link
US (1) US7971656B2 (fr)
EP (1) EP2086726B1 (fr)
CN (1) CN101535005B (fr)
DE (2) DE102006051924A1 (fr)
RU (1) RU2443540C2 (fr)
WO (1) WO2008052832A1 (fr)

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DE102006016442A1 (de) * 2006-04-07 2007-10-11 Robert Bosch Gmbh Handwerkzeugmaschine mit vibrationsgedämpftem Handgriff
DE102006051924A1 (de) * 2006-11-03 2008-05-15 Robert Bosch Gmbh Handwerkzeugmaschine mit einem vibrationsgedämpften, mit einem Schalter versehenen Handgriff
DE102006052807A1 (de) * 2006-11-09 2008-05-15 Robert Bosch Gmbh Handwerkzeugmaschine mit einem vibrationsgedämpften Bügelhandgriff
GB2451293A (en) * 2007-07-27 2009-01-28 Black & Decker Inc Hammer drill with slidably mounted handle
JP5180697B2 (ja) * 2008-06-19 2013-04-10 株式会社マキタ 手持式作業工具
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GB201112825D0 (en) * 2011-07-26 2011-09-07 Black & Decker Inc A hammer drill
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DE102006051924A1 (de) * 2006-11-03 2008-05-15 Robert Bosch Gmbh Handwerkzeugmaschine mit einem vibrationsgedämpften, mit einem Schalter versehenen Handgriff
DE102006052807A1 (de) * 2006-11-09 2008-05-15 Robert Bosch Gmbh Handwerkzeugmaschine mit einem vibrationsgedämpften Bügelhandgriff
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Also Published As

Publication number Publication date
DE102006051924A1 (de) 2008-05-15
US7971656B2 (en) 2011-07-05
RU2009120875A (ru) 2010-12-10
EP2086726A1 (fr) 2009-08-12
US20090272553A1 (en) 2009-11-05
DE502007002644D1 (de) 2010-03-04
CN101535005A (zh) 2009-09-16
RU2443540C2 (ru) 2012-02-27
WO2008052832A1 (fr) 2008-05-08
CN101535005B (zh) 2011-01-26

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