EP2435214A1 - Dispositif de poignée supplémentaire de machine-outil à main - Google Patents

Dispositif de poignée supplémentaire de machine-outil à main

Info

Publication number
EP2435214A1
EP2435214A1 EP10718901A EP10718901A EP2435214A1 EP 2435214 A1 EP2435214 A1 EP 2435214A1 EP 10718901 A EP10718901 A EP 10718901A EP 10718901 A EP10718901 A EP 10718901A EP 2435214 A1 EP2435214 A1 EP 2435214A1
Authority
EP
European Patent Office
Prior art keywords
handle device
unit
shell unit
auxiliary handle
power tool
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Withdrawn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
EP10718901A
Other languages
German (de)
English (en)
Inventor
Willy Braun
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 EP2435214A1 publication Critical patent/EP2435214A1/fr
Withdrawn legal-status Critical Current

Links

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
    • 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
    • B25F5/02—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
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/085—Elastic behaviour of tool components
    • 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
    • B25D2250/121—Housing details
    • 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
    • B25D2250/365—Use of seals
    • 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 invention is based on an auxiliary handle device according to the preamble of claim 1.
  • the invention relates to an auxiliary handle device of a hand tool with a device housing, in particular a hammer drill and / or chiseling device.
  • the auxiliary handle device be a shell unit, which is provided for mechanical coupling to the power tool, and a bearing unit which is provided to store the shell unit in at least one operating state relative to a component of the power tool in at least one spatial direction elastically movable, includes to mechanically decouple movements of the power tool and the shell unit.
  • the at least one spatial direction can be an axial and / or a radial and / or a tangential direction.
  • an "axial direction” is to be understood as meaning, in particular, a direction parallel to a main extension direction of the hand-held power tool. IeI be understood to a direction of flight of a racket during operation of the hammer drill and / or Chisel réelle.
  • a "radial direction” should be understood to mean, in particular, a direction which is perpendicular to it, starting from the axial directional axis. "In this context, a" tangential direction "should be understood as meaning, in particular, a direction of a pure
  • a "shell unit” should be understood as meaning, in particular, a unit which, in an assembled state in at least one sectional plane which is perpendicular to the axial direction, is more than 10%, preferably more, of a part of the hand-held power tool lying in the cutting plane more than 30% and particularly preferably more than 50% of a full angle, measured at a midpoint angle about the axial direction, to the outside covers by the elastically movable mounting of the shell unit, a decoupling of the movements of the power tool and the shell unit can be achieved by
  • the solution can enable flexible design of the decoupling to a device-specific movement of the handheld power tool, thereby simultaneously reducing vib rationsbelastung an operator and good management stability of the power tool, in particular the hammer drill and / or chisel device can be provided.
  • the shell unit can be mounted with the bearing unit from the outside to the hand tool.
  • the shell unit can be mounted with the bearing unit from the outside to the hand tool.
  • part of the handheld power tool for example a part of the device housing, with the shell unit.
  • the shell unit is formed at least in two parts.
  • the shell unit can be mounted particularly easily on the handheld power tool and a decoupling of the movements of the power tool and the
  • Shell unit can be achieved.
  • the shell unit can advantageously be retrofitted to existing hand tool machines in a simple manner.
  • the shell unit has at least one connecting element, which is provided to prevent the at least two parts of the shell insert. unit releasably connected to each other, whereby a particularly simple assembly of the shell unit can be achieved.
  • the connecting element may be formed as a releasable screw connection.
  • the bearing unit comprises at least one elastic spring element which is provided to support the shell unit on at least one component of the power tool.
  • an "elastic spring element” is to be understood as meaning, in particular, an element which changes its rest shape in a range of advantageously more than two millimeters, particularly advantageously more than four millimeters, in a force effect typical of a hand tool machine in at least one operating state
  • the elastic spring elements may be designed as sheet-metal membranes or cylindrical helical compression springs n.
  • the elastic spring elements can be arranged in recesses provided for the shell unit and / or the power tool.
  • the elastic spring elements can also be arranged at different radial distances.
  • they can be fixed by connecting means such as screws or pins each on the shell unit and the power tool. Suitable connecting means and methods for this purpose are familiar to the person skilled in the art.
  • the elastic spring elements can be arranged between the shell unit and the hand tool machine along a direction which comprises an axial and a radial direction component.
  • the at least one elastic spring element is designed as an elastomer element.
  • an "elastomer element” is to be understood as meaning in particular an element made of an elastically deformable plastic, whereby a particularly simple and flexible solution for decoupling the movements of the handheld power tool and the shell unit can be provided
  • a plurality of elastomer elements can be provided between the handheld power tool and the shell unit
  • the elastomer elements can be vulcanized onto one or more of their parts during manufacture of the hand tool machine for fixing.
  • the at least one elastomeric element is annular or helical.
  • the term “annular” should be understood to mean, in particular, that the elastomer element has a closed annular shape that encloses at least part of the hand-held power tool "helical” should in this context be understood in particular to mean that the elastomeric element has an open, linear shape and encloses at least a part of the power tool n times, where n can be any real number.
  • a plurality of annular elastomeric members may be disposed at an axial distance between the hand tool and the tray unit.
  • an annular elastomer element may have axial location coordinates that are dependent on an angle, in particular an angle whose apex lies in the axial direction.
  • a maximum axial distance between two elastomer elements may amount to at least 10%, particularly advantageously at least 15% of an extension length of the handheld power tool measured in the axial direction, whereby a load of the elastic spring elements can be kept low due to favorable lever ratios.
  • the bearing unit in at least two different, perpendicular to the axial direction lying planes each comprise at least two elastic spring elements which are intended to store the shell unit on the power tool.
  • a simple and effective decoupling of the movements of the power tool and the shell unit can be achieved.
  • a largest axial distance between the planes at least 10%, particularly advantageously at least 15% measured in the axial direction extension length of the power tool, which due to favorable leverage ratios a load of the elastic spring elements can be kept low.
  • the shell unit has at least one stop element which is provided to limit a movement of the shell unit relative to the hand tool machine.
  • the shell unit has stop elements in the axial and in the opposite direction, in opposite tangential and opposite radial directions, whereby a complete protection of the elastic spring elements against overloading can be achieved.
  • the auxiliary handle device comprises at least one sealing element, which is arranged between the shell unit and a component of the power tool to prevent the ingress of dust.
  • the at least one sealing element is designed as a bellows, the prevention of the penetration of dust into the hand tool can be carried out in a particularly simple and flexible manner.
  • the at least one bellows is made of an elastomer.
  • the at least one sealing element can be designed as an elastic spring element, whereby in an overall design of a bearing of the shell unit, the elastic spring element can be used as a further degree of freedom.
  • the auxiliary handle device comprises a gripping element with a clamping band, which is intended to produce a releasable connection with the tray unit in at least one operating state, thereby advantageously providing good guiding and handling properties of the machine tool simultaneous good mechanical decoupling of the handle member of a movement of the power tool and a quick assembly and disassembly of the handle element can result.
  • the auxiliary handle device in a known manner comprise a grip element designed as a handle with clamping holder, which presses the shell unit against the clamping holder by adjusting a screw element of the handle.
  • the shell unit has a screw element for producing a detachable connection with a handle unit, which advantageously good guiding and handling properties of the machine tool with good mechanical decoupling of the handle unit from a movement of the power tool and a fast assembly and disassembly possibility can give the handle unit.
  • the screw member is formed as a threaded bore, so that advantageous in manual power tools usual additional handles that are equipped at one end with a threaded part, particularly advantageous with a built-in auxiliary handle vibration damping device can be used as a handle unit.
  • FIG. 1 is a schematic representation of a hammer drill and Chisel réelle with mounted auxiliary handle device
  • FIG. 2 is a detailed side view of a section of the hammer drill and chiseling device according to FIG. 1
  • FIG. 3 is a sectional view of FIG. 2 in the direction B-B '
  • 4 shows embodiments of annular elastomer elements
  • FIG. 5 embodiments of helical elastomeric elements
  • Fig. 6 shows another embodiment of a tray unit.
  • Fig. 1 shows a schematic side view of a trained as a hammer drill and chisel hand tool 10 with a device housing 12 to which an auxiliary handle device according to the invention is mounted.
  • the auxiliary handle device comprises a tray unit 14, which is provided for mechanical coupling to the hammer drill and chisel device.
  • the auxiliary handle device has a handle unit 16 with a clamping band 22 which is provided to produce a detachable connection with the tray unit 14 in at least one operating state.
  • the handle unit 16 comprises a handle 18 and a clamp holder 20 and presses the bowl unit 14 against the clamp holder 20 by adjusting a screw element 24 (FIG. 2) of the handle 18.
  • FIG. 2 is a detailed side view of a section of the hammer drill and Chisel réelle shown in FIG. 1.
  • the hammer drill and chisel device comprises a striking mechanism of known type with a hammer tube 26, in which a hammer piston, not shown, and a racket are guided. An axial direction is parallel to a direction of travel of the racket in the hammer tube 26 during operation of the hammer drill and chisel tool (FIG. 3).
  • the auxiliary handle device comprises a bearing unit 28 ( Figures 2 and 3), which is provided to support the shell unit 14 in at least one operating state relative to the hammer tube 26 of the hammer drill and chisel device in at least one spatial direction elastically movable to movements of the hammer drill and Chisel device and the shell unit 14 mechanically decouple.
  • the tray unit 14 is connected to the
  • the bearing unit 28 mounted on the hammer tube 26 and replaces a part of the device housing 12, which would surround the hammer tube 26 without the auxiliary handle device.
  • the bearing unit 28 comprises eight elastic spring elements 30, which are arranged and provided in two groups of four elastic spring elements 30 in two different planes lying perpendicular to the axial direction. store the tray unit 14 on the hammer tube 26 of the hammer drill and chisel tool.
  • the elastic spring elements 30 are formed as elastomeric elements and arranged in recesses 32 provided for the shell unit 14 and the hammer tube 26.
  • a maximum axial distance 34 of the two planes is about 14% of an axially measured extension length of the hammer drill and
  • the tray unit 14 has stop members 36, 38 which are intended to limit movement of the tray unit 14 relative to the hand tool 10.
  • a first stop member 36 is formed as a stepped constriction of the tray unit 14 and provided to limit the movement of the tray unit 14 relative to a drilling direction end of the hammer tube 26.
  • a second stop element 38 is formed at a drilling direction opposite end of the shell unit 14 as a radial expansion and provided to limit the movement of the shell unit 14 relative to the device housing 12 of the power tool 10.
  • the sealing element 40 is formed as a bellows and made of an elastomer and can be considered as an elastic spring element 30 when designing a decoupling.
  • FIGS. 4 and 5 Further embodiments of elastomeric elements 42, 44, 46, 48 in bearing units 50, 52 are shown in FIGS. 4 and 5.
  • An annular elastomeric element 42 is formed in a plane perpendicular to the axial direction.
  • a further embodiment according to the right-hand part of FIG. 4 shows an annular elastomer element 44 in which an axial coordinate of a magnitude of an angle drawn in FIG. 4, which has a vertex in the axial direction, depends.
  • FIG. 5 shows two helical elastomer elements 46, 48 which surround a part of a handheld power tool 10 n times, where n is approximately 1.0 for the elastomer element 46 and approximately 1.9 for the elastomer element 48.
  • tray unit 54 Another embodiment of a tray unit 54, in particular to a
  • the shell unit 54 is designed in several parts and comprises two shell elements 56, 58 which are movably connected by a hinge 60 arranged on a longitudinal axis. On a side opposite the hinge 60, the shell unit 54 has two connecting elements 62 formed as a screw connection, which are provided to releasably connect the shell elements 56, 58 to one another.
  • the shell unit 54 has a material-reinforced area with a threaded member formed as a threaded member 64 for producing a detachable connection with a handle unit 66, in particular with a conventional hand-held power tools 10 additional handle with integrated vibration damping device at one end with a threaded portion 68th is equipped, up.
  • the shell unit 54 includes stop members 70, 72 integrally formed on both ends thereof and adapted to cooperate with features of the device housing 12 to limit movement of the shell unit 54 relative to the instrument housing 12 of the power tool 10.

Landscapes

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

Abstract

L'invention concerne un dispositif de poignée supplémentaire de machine-outil à main (10) comprenant un boîtier (12), notamment d'un marteau perforateur et/ou d'un burineur. Il est prévu que le dispositif de poignée supplémentaire comprenne une unité formant coque (14; 54) conçue pour être accouplée mécaniquement à la machine-outil à main (10) et une unité support (28; 50; 52) conçue pour soutenir de manière élastiquement mobile dans au moins une direction spatiale l'unité de coque (14; 54), dans au moins un état de fonctionnement, par rapport à un composant de la machine-outil à main (10) de manière à désaccoupler mécaniquement des mouvements de la machine-outil à main (10) et de l'unité formant coque (14; 54).
EP10718901A 2009-05-29 2010-04-06 Dispositif de poignée supplémentaire de machine-outil à main Withdrawn EP2435214A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910026617 DE102009026617A1 (de) 2009-05-29 2009-05-29 Zusatzhandgriffvorrichtung einer Handwerkzeugmaschine
PCT/EP2010/054477 WO2010136245A1 (fr) 2009-05-29 2010-04-06 Dispositif de poignée supplémentaire de machine-outil à main

Publications (1)

Publication Number Publication Date
EP2435214A1 true EP2435214A1 (fr) 2012-04-04

Family

ID=42308303

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10718901A Withdrawn EP2435214A1 (fr) 2009-05-29 2010-04-06 Dispositif de poignée supplémentaire de machine-outil à main

Country Status (3)

Country Link
EP (1) EP2435214A1 (fr)
DE (1) DE102009026617A1 (fr)
WO (1) WO2010136245A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010042551A1 (de) * 2010-10-18 2012-04-19 Robert Bosch Gmbh Handwerkzeugmaschinenentkopplungseinheit
EP3670099A1 (fr) * 2018-12-17 2020-06-24 Hilti Aktiengesellschaft Outil électrique portable et poignée latérale
CN112091279B (zh) * 2020-10-13 2021-07-30 永康市富尔达工具有限公司 一种具有卡死保护结构的冲击钻
US11583992B2 (en) 2021-03-25 2023-02-21 Milwaukee Electric Tool Corporation Side handle for power tool

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6052915B2 (ja) * 1980-10-13 1985-11-21 誠 南舘 防振用ハンドル装置
DE8318425U1 (de) * 1983-06-25 1983-10-27 C. & E. Fein Gmbh & Co, 7000 Stuttgart Zusatzhandgriff fuer handgefuehrte werkzeuge
DE10130547B4 (de) * 2001-06-25 2013-01-17 Robert Bosch Gmbh Handwerkzeugmaschine
DE50211364D1 (de) * 2002-09-19 2008-01-24 Aeg Electric Tools Gmbh Zusatzhandgriff
DE102005059180A1 (de) * 2005-12-12 2007-06-14 Robert Bosch Gmbh Handwerkzeugmaschine mit einem Antriebsstrang und einer Entkopplungseinheit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010136245A1 *

Also Published As

Publication number Publication date
DE102009026617A1 (de) 2010-12-02
WO2010136245A1 (fr) 2010-12-02

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