EP1332023B1 - Machine-outil a main comportant au moins une poignee - Google Patents

Machine-outil a main comportant au moins une poignee Download PDF

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Publication number
EP1332023B1
EP1332023B1 EP01943157A EP01943157A EP1332023B1 EP 1332023 B1 EP1332023 B1 EP 1332023B1 EP 01943157 A EP01943157 A EP 01943157A EP 01943157 A EP01943157 A EP 01943157A EP 1332023 B1 EP1332023 B1 EP 1332023B1
Authority
EP
European Patent Office
Prior art keywords
handle
elastic
fastening part
securing element
fastening
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.)
Expired - Lifetime
Application number
EP01943157A
Other languages
German (de)
English (en)
Other versions
EP1332023A1 (fr
Inventor
Ernst Kraenzler
Manfred Ruff
Harald Krondorfer
Ralph Dammertz
Joerg Goehner
Mario Frank
Franz Scheschark
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7645854&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1332023(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to EP08009361A priority Critical patent/EP1955826B1/fr
Publication of EP1332023A1 publication Critical patent/EP1332023A1/fr
Application granted granted Critical
Publication of EP1332023B1 publication Critical patent/EP1332023B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B25F5/006—Vibration damping means
    • 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

Definitions

  • the invention relates to a hand tool with at least one handle according to the preamble of claim 1.
  • a power tool is from the DE 195 30712 A known.
  • U1 is a handle for guiding or holding swinging devices known.
  • the handle has a handle with a metal core, which is coated with a vibration-damping plastic. With the metal core is connected at one end via a screw, a first metal sheet, which is connected in the remote from the handle portion axial direction via an elastic buffer with a second metal sheet. The second metal sheet is in turn connected via a screw to a guide tongue of the device.
  • a connection between the handle part and the fastening part is secured with the elastic element via at least one movable securing element, in a damage of the elastic element, a release of the handle part can be avoided by the housing and always ensured a control of the power tool on the handle part. Due to the movable design of the securing element, a vibration transmission via the securing element can be avoided in a normal operation.
  • the fastening part is advantageously designed as a separate component to the housing, but may also be at least partially integral with the housing of the power tool.
  • the securing element is formed by a rigid component, it can be movably mounted relative to the grip part.
  • the fuse element can be easily installed and disassembled, so that it can be replaced after a damage.
  • the safety element is advantageously fixed in the fastening part and movably mounted to the handle part, whereby a space in the handle part advantageously used for freedom of movement of the fuse element and a simple assembly can be achieved from the handle part. Furthermore, a fixing screw arranged in the fastening part can be used for a firm connection of the securing element. Additional fasteners for the fuse element can be saved.
  • the elastic element advantageously surrounds the securing element.
  • the Sich ceremoniessclcmcnt is arranged centrally in the elastic element along a central axis, whereby undesired tensile stresses in the securing element and a vibration transmission associated therewith can be avoided during a tilting movement.
  • this may also be enclosed with a sleeve of solid material which may be attached to the handle portion or on the fastening part and either to the handle portion or the fastening part has a distance to avoid vibration transmission.
  • a maximum deflection of the elastic element from a basic position at least in a tilting direction and / or a thrust direction, can be determined in particular by means of the securing element, in particular via a rigid securing element. An overstretching the elastic element can be avoided by the securing element and a long service life can be achieved.
  • the securing element is formed by a screw, which can be screwed particularly advantageous in the fastening screw in the fastening part.
  • a screw is particularly cost-effective and can be easily and quickly assembled and disassembled.
  • a bolt which can be either form-fitting, force, and / or cohesively fastened in the handle part or in the fastening part, for example, this can be pressed into the fastening screw in the fastening part.
  • the elastic element has at least just before an advantageous circular bearing surface for fastening element and / or Handle part a non-circular cross-sectional area which is smaller than the contact surface, namely, the cross-sectional area is particularly advantageous from a circular core surface and radially to the core surface outwardly adjacent arcuate extensions together.
  • an advantageous microstructure can be contributed by heat being removed from an inner region of the elastic element via at least one component during the production of the elastic element.
  • the component can be formed by an already inserted in the production in the elastic element fuse element or advantageously of a core, which is removed after the production of the elastic element and advantageously forms a recess for the securing element.
  • the core can advantageously be cooled relative to the inserted securing element by a cooling channel with a coolant.
  • the solution according to the invention can be used in various hand-held power tools that appear appropriate to those skilled in the art, such as hammer drills, chipping hammers, drills, screwdrivers, saws, milling machines, planers, etc.
  • the solution according to the invention can be used to advantage in angle grinders extending transversely to the longitudinal direction additional handle, which primarily serves to stir the angle grinder.
  • Fig. 1 shows an angle grinder with a mounted in a housing 56, not shown electric motor, via which a clamped in a tool holder cutting disc 54 is driven.
  • the angle grinder is integrated in the housing 56 on the side facing away from the cutting disk 54, extending in the longitudinal direction handle 58 and via a second attached to a gear housing 60 in the region of the cutting disk 54 and the tool holder, transversely to the longitudinal direction extending handle 10 feasible.
  • the handle 10 has a handle portion 12 which is fixedly connected via an elastic, vibration-damping plastic element 14 with a fastening part 16, via which the handle portion 12 is attached via an integrally formed on the fastening part 16 threaded pin 18 on the gear housing 60 of the angle grinder.
  • the elastic plastic element 14 is molded onto the handle part 12 and to the fastening part 16 and is thus firmly connected thereto.
  • FIGS. 2 to 6 shown embodiments of the fuse element are for illustration and do not constitute components of the invention.
  • the grip part 12 is connected to the fastening part 16 next to the elastic plastic element 14 via a movable securing element 20 ( Fig. 2 ).
  • the securing element 20 is formed by a flexible component in the form of a wire rope and is arranged in the elastic plastic element 14 along a central axis. At the ends of the Sich ceremoniesselemcnts 20 threaded sleeves are not shown attached, via which the securing element 20 is screwed to the handle part 12 and the fastening part 16.
  • the elastic plastic element 14 encloses the securing element 20.
  • the securing element 20 is loaded in the assembled state to train and the elastic plastic element 14 to pressure.
  • Fig. 3 shows a further embodiment of a handle 26, in which a securing element 22 is formed by a movably mounted rigid and molded by a resilient plastic member 24 rod, at the ends of each disc 30, 32 are attached.
  • a securing element 22 is formed by a movably mounted rigid and molded by a resilient plastic member 24 rod, at the ends of each disc 30, 32 are attached.
  • Constant components are numbered in the illustrated embodiments in principle with the same reference numerals. Regarding consistent functions and features can be found on the description of Fig. 1 to get expelled.
  • each a sleeve 34, 36 attached, each having a disc 38, 40 with coaxial openings 42, 44 in the direction of the elastic plastic element 24.
  • the sleeves 34, 36 and the discs 38, 40 respectively define a space 46, 48 which is ejected with elastic material and into which the securing element 22 with its discs 30, 32 is inserted.
  • the discs 30, 32 of the securing element 22 have a larger diameter than the openings 42, 44 and are captively held in the spaces 46, 48.
  • the disc 30 can be unscrewed from the rod-shaped part of the securing element 22. Subsequently, the securing element 22 before insertion of the sleeves 34, 36 with the handle part 12 and the fastening part 16 inserted into this and the disc 30 are screwed back to the rod-shaped part.
  • the sleeves 34, 36 are connected via threaded connections not shown with the handle part 12 and the fastening part 16. After the sleeves 34, 36 are connected to the handle part 12 and the fastening part 16, the securing element 22 is encapsulated with elastic plastic.
  • the sleeves 34, 36 provide with their discs 38, 40 advantageously a positive connection between the handle part 12 and the elastic plastic element 24 and between the elastic plastic element 24 and the fastening part 16 ago.
  • the elastic plastic element with the securing element, the sleeves and the discs could be designed as a preassembled module, which is then bolted to the handle part and the fastening part and glued.
  • a securing element 64 is formed by a movably mounted, rigid and overmolded by an elastic plastic element 24 rod whose ends 66, 68 are disc-shaped.
  • a fastening part 70 and on a handle part 72 are each a molded part 74, 76 are formed, which are each disk-shaped in the direction of the elastic plastic element 24 and coaxial openings 78, 80 have.
  • Each of the mold parts 74, 76 delimits a space 82, 84 which is ejected with elastic material and into which it is integrally formed executed fuse element 64 is inserted with its disc-shaped ends 66, 68 during assembly.
  • the securing element 64 is guided with its rod-shaped part transversely to the longitudinal direction of the handle 62 through lateral openings 86, 88 of the molded parts 74, 76 ( Fig. 5 ).
  • the securing element 64 in the mold parts 74, 76 secured against its insertion 90 through the openings 86, 88 by each in longitudinal section L-shaped moldings 92, 94 perpendicular to the insertion 90 and transverse to the longitudinal direction, each with an opening 96, 98 via the rod-shaped part of the fuse element 64 are pushed.
  • the disc-shaped ends 66, 68 of the securing element 64 have a larger diameter than the openings 78, 80 and are captively held in the spaces 82, 84.
  • the securing element 64 is encapsulated with plastic.
  • a width 100 of the openings 86, 88 transversely to the longitudinal direction of the handle 62 and perpendicular to the insertion direction 90 of the securing element 64 is made smaller than a diameter 102 of the rod-shaped part of the securing element 64, so that the securing element 64 against resistance through the openings 86, 88 must be pushed and then in the openings 78, 80 of the mold parts 74, 76 engages.
  • the securing element 64 is secured in the openings 78, 80 of the molded parts 74, 76, and the mold parts 92, 94 can be advantageously saved.
  • Fig. 6 shows a further embodiment of a handle 50, in which a securing element 28 is formed by a flexible cloth band which encloses a resilient plastic element 52.
  • the band-shaped securing element 28 is designed to be substantially inextensible in the longitudinal direction of the handle 50 and has the handle portion 12 and the fixing member 16 each have a plastic collar, not shown, with which the band-shaped securing element 28 is firmly connected via snap-in connections with the handle portion 12 and with the fastening part 16.
  • this is designed to be longer than the elastic plastic element 52.
  • the elastic plastic element 52 is protected by the securing element 28 against external influences and damage during use of the angle grinder. Furthermore, a maximum deflection of the elastic plastic element 52 is determined by the securing element 28 from a basic position, in thrust-tilting and pulling direction. In the maximum deflection positions, the securing element 28 is tensioned and avoids further deflection of the elastic plastic element 52.
  • FIG. 7 to 12 is the embodiment in Fig. 3 an alternative handle 104 is shown.
  • the handle 104 has a fastening part 110, which is fixedly connected via an elastic plastic element 108 with a handle portion 106.
  • the connection between the fastening part 110 and the grip part 106 is secured by a securing element 112 formed by a screw ( Fig. 8 ).
  • the fastening part 110 and the handle part 106 are first injection molded from plastic, wherein in the fastening part 110, a fastening screw Inserted 114 and molded over the form-fitting manner in the axial direction and in the direction of rotation, which in addition to an external thread 118 for attachment to a machine housing in the direction of grip part 106 has an internal thread 120.
  • the fastening screw 114 could also be subsequently pressed into a fastening part.
  • the fastening part 110 with the fastening screw 114 and the grip part 106 are inserted into a mold 140 in order to be materially bonded to the elastic plastic element 108 in an injection molding process ( Fig.
  • the mold 140 is designed such that the elastic plastic element 108 just before a circular contact surface 146 for fastening part 110 and a circular bearing surface 134 to the handle portion 106 has a non-circular cross-sectional area 116, which are each smaller than the contact surfaces 134, 146, and that has Cross-sectional area 116 each have a round core surface 122, to which radially outwardly four arcuate extensions 124, 126, 128, 130 connect ( Fig. 9 and 11 ). Also possible would be more or fewer than four arcuate extensions 124, 126, 128, 130. In a middle region, the elastic plastic element 108 has a round cross-sectional surface 136 (FIG. Fig. 10 ).
  • a die 142 cooled via a liquid channel 148 is inserted into the mold 140, forming a recess 144 for the securing element 112, through which heat is dissipated from the inner region of the elastic plastic element 108 during manufacture.
  • the grip part 106 is hollow on the inside and has a recess 138 in the direction of the attachment part 110, through which the core 142 protrudes and which is partially ejected with the elastic plastic element 108 is, so that an edge region of the recess 138 is engaged behind by a collar 150 of the elastic plastic element 108.
  • the securing element 112 is guided by the grip part 106 through the recess 142 made by the core 142 in the direction of the fastening part 110 through the elastic plastic element 108 and screwed into the internal thread 120 in the fastening screw 114.
  • the securing element 112 has a screw head 132, which in the assembled state of the securing element 112 has a spacing from the grip part 106, so that the securing element 112 is mounted movably relative to the grip part 106.
  • the screw head 132 is larger than the recesses 138 and 144, so that in case of damage of the elastic plastic member 108, the grip member 106 is captively connected to the fastening part 110.
  • the distance between the screw head 132 and the handle portion 106 determines a maximum allowable deflection of the elastic plastic element 108.
  • the collar 150 direct contact between the screw head 132 and the handle portion 106 is prevented at a maximum deflection and vibration transmission largely avoided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Harvester Elements (AREA)
  • Portable Power Tools In General (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Claims (7)

  1. Machine-outil à main comportant au moins une poignée (104) munie d'au moins une partie de préhension (106) reliée solidairement par au moins un élément d'amortissement des vibrations (108), élastique, à une pièce de fixation (110) par laquelle la pièce de préhension (106) se fixe sur un boîtier (60),
    la liaison entre la pièce de préhension (106) et la pièce de fixation (110) étant assurée par l'élément élastique (108) par au moins un moyen de fixation (112), mobile,
    caractérisée en ce que
    l'élément de fixation (112) est constitué par une pièce rigide et il (112) est monté solidairement dans la pièce de fixation (110) et de manière mobile par rapport à la pièce de préhension (106) et l'élément de fixation (112) est relié solidairement à l'aide d'une vis de fixation (114) prévue dans la pièce de fixation (110).
  2. Machine-outil à main selon la revendication 1,
    caractérisée en ce que
    l'élément de fixation (112) est monté dans l'élément élastique (108) le long de son axe.
  3. Machine-outil à main selon la revendication 1,
    caractérisée en ce que
    l'élément de fixation (112) est constitué par une vis.
  4. Machine-outil à main selon l'une des revendications 1 à 3,
    caractérisée en ce que
    l'élément de fixation (112) définit un débattement maximum de l'élément élastique (108) à partir d'une position de base au moins dans une direction de basculement et/ou dans une direction de coulissement.
  5. Machine-outil à main selon l'une des revendications précédentes,
    caractérisée en ce que
    l'élément élastique (108) comporte au moins une section non circulaire (116) juste avant une surface d'appui (134, 146) par rapport à la pièce de fixation (110) et/ou la pièce de préhension (106), cette surface de section non circulaire étant plus petite que la surface d'appui (134, 146).
  6. Procédé de fabrication d'une poignée d'une machine-outil à main selon l'une des revendications précédentes,
    caractérisé en ce que
    pour la fabrication de l'élément élastique (108), on évacue la chaleur venant de l'intérieur de l'élément élastique (108), par au moins une pièce (142).
  7. Procédé selon la revendication 6,
    caractérisé en ce que
    la pièce (142) est formée par un noyau que l'on enlève après fabrication de l'élément élastique (108).
EP01943157A 2000-06-15 2001-05-25 Machine-outil a main comportant au moins une poignee Expired - Lifetime EP1332023B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08009361A EP1955826B1 (fr) 2000-06-15 2001-05-25 Machine-outil dotée d'au moins une poignée

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10029536A DE10029536A1 (de) 2000-06-15 2000-06-15 Handwerkzeugmaschine mit zumindest einem Handgriff
DE10029536 2000-06-15
PCT/DE2001/002024 WO2003043785A1 (fr) 2000-06-15 2001-05-25 Machine-outil a main comportant au moins une poignee

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP08009361A Division EP1955826B1 (fr) 2000-06-15 2001-05-25 Machine-outil dotée d'au moins une poignée

Publications (2)

Publication Number Publication Date
EP1332023A1 EP1332023A1 (fr) 2003-08-06
EP1332023B1 true EP1332023B1 (fr) 2008-08-20

Family

ID=7645854

Family Applications (2)

Application Number Title Priority Date Filing Date
EP01943157A Expired - Lifetime EP1332023B1 (fr) 2000-06-15 2001-05-25 Machine-outil a main comportant au moins une poignee
EP08009361A Expired - Lifetime EP1955826B1 (fr) 2000-06-15 2001-05-25 Machine-outil dotée d'au moins une poignée

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP08009361A Expired - Lifetime EP1955826B1 (fr) 2000-06-15 2001-05-25 Machine-outil dotée d'au moins une poignée

Country Status (6)

Country Link
US (1) US8522894B2 (fr)
EP (2) EP1332023B1 (fr)
JP (1) JP4860904B2 (fr)
CN (1) CN1289267C (fr)
DE (3) DE10029536A1 (fr)
WO (1) WO2003043785A1 (fr)

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WO2003104826A1 (fr) * 2002-06-10 2003-12-18 株式会社アドバンテスト Appareil de test à semi-conducteur
EP1865287B1 (fr) 2005-03-30 2012-12-26 Pioneer Corporation Dispositif, procede et programme de guidage et support d'enregistrement

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DE50115631D1 (de) 2010-10-28
DE10029536A1 (de) 2001-12-20
CN1289267C (zh) 2006-12-13
US20050224244A1 (en) 2005-10-13
US8522894B2 (en) 2013-09-03
WO2003043785A1 (fr) 2003-05-30
CN1460048A (zh) 2003-12-03
EP1955826B1 (fr) 2010-09-15
DE50114254D1 (de) 2008-10-02
EP1332023A1 (fr) 2003-08-06
EP1955826A1 (fr) 2008-08-13
JP4860904B2 (ja) 2012-01-25
JP2005509534A (ja) 2005-04-14

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