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WO2009083314A1 - Système de poignée auxiliaire - Google Patents

Système de poignée auxiliaire Download PDF

Info

Publication number
WO2009083314A1
WO2009083314A1 PCT/EP2008/064864 EP2008064864W WO2009083314A1 WO 2009083314 A1 WO2009083314 A1 WO 2009083314A1 EP 2008064864 W EP2008064864 W EP 2008064864W WO 2009083314 A1 WO2009083314 A1 WO 2009083314A1
Authority
WO
WIPO (PCT)
Prior art keywords
auxiliary handle
damping
unit
handle device
damping means
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.)
Ceased
Application number
PCT/EP2008/064864
Other languages
German (de)
English (en)
Inventor
Robert Simm
Aldo Di Nicolantonio
Roswitha Eicher
Stefan Heess
Joerg Maute
Florian Esenwein
Bernhard Eicher
Marcus Schuller
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 WO2009083314A1 publication Critical patent/WO2009083314A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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 is based on an auxiliary handle device according to the preamble of claim 1.
  • the auxiliary handle device has an auxiliary handle and a damping unit with a damping means.
  • the invention is based on an auxiliary handle device, in particular for a hand-held power tool, with an auxiliary handle and a damping unit which has at least one damping means.
  • the damping means is at least partially formed by a fiber composite.
  • an "additional handle" of the auxiliary handle device is to be understood as an area and / or a component and / or an element, for the purpose of creating, in particular embracing, by one or more hands of an operator a guide of a power tool by means of the auxiliary handle device, is provided, and in particular next to another handle, in particular a main handle, in addition to the hand tool is attachable, wherein the additional hand grip device is arranged laterally on the hand tool and / or can be dismantled without tools by an operator on the power tool and / or arranged in a front, near the tool area of the power tool and / or the auxiliary handle is rod-shaped.
  • a "fiber composite” is to be understood as meaning a composite of a plurality of individual fibers, which, viewed as a whole, has a substantially higher interconnectivity
  • the individual fibers are preferably arranged at least partially movable in at least one direction to each other.
  • the individual fibers can be arranged within the fiber composite, such as parallel to each other, or arranged randomly to each other.
  • a vibration damping by means of the fiber composite, converting a vibration energy into an internal friction energy in a movement of the individual fibers to each other.
  • the auxiliary handle device according to the invention is basically used in conjunction with all hand tool machines that appear useful to the person skilled in the art, in which, in particular, guidance of the handheld power tool by means of the auxiliary handle for an operator is facilitated. Due to its damping characteristic, the auxiliary handle device is particularly advantageous in connection with an angle grinder.
  • Knitted fabric is formed.
  • a "knitted fabric” is to be understood as meaning, in particular, a composite of a plurality of fibers, individual fibers having at least one intersection point with one another and preferably having a plurality of intersection points with one another.
  • the fiber composite is formed by a metal, whereby an advantageous stability of the damping means within the auxiliary handle device can be achieved.
  • a "braid" is to be understood in particular as a composite of a plurality of fibers, which are preferably arranged in an ordered manner, wherein individual fibers are advantageously combined into strands and the strands are looped into each other, such as a rope.
  • the fiber composite is annular, whereby the most uniform possible vibration damping in a circumferential direction of the auxiliary handle can be advantageously achieved.
  • the damping unit has at least two separately formed damping means, whereby a vibration damping of the damping unit can be achieved at separately formed vibration transmission areas within the auxiliary handle device.
  • Damping means is formed by a swing leg.
  • an "oscillating leg" is to be understood as meaning, in particular, a damping means which has a substantially smaller cross-sectional area than the auxiliary handle for vibration damping, wherein the cross-sectional area is preferably smaller by at least 10%, advantageously by at least 20% and particularly advantageously by at least 50% the transverse extent of the auxiliary handle, and / or the damping means web-shaped and / or cylindrical and is also preferably formed by a bridging element and between the auxiliary handle and a vibration transmitting component, such as a fastening unit, in particular along an axial direction or along a longitudinal extent of the Rajhandgriffvorrich- is arranged or stores the auxiliary handle against the component and thus a direct
  • auxiliary handle device Vibration transmission from the component to the auxiliary handle at least partially prevented.
  • the inventive design of the auxiliary handle device allows at least partial vibration isolation of the auxiliary handle of the power tool by a transmission area is reduced in its cross-sectional area to a minimum.
  • an advantageous transmission of a force is possible by means of the oscillating legs, which is exerted by an operator of the power tool on the auxiliary handle to a guide of the hand tool.
  • Additional handle can be achieved if at least one swing leg has a longitudinal extent, which is aligned substantially parallel to a longitudinal extent of the auxiliary handle.
  • substantially parallel in this case in particular an inclination of a maximum of ⁇ 10 ° and particularly preferably ⁇ 5 ° of the longitudinal extension of the oscillating leg relative to the longitudinal extension of the auxiliary handle.
  • the auxiliary handle device has a fastening unit which at least partially by means of at least one
  • Damping means is mounted relative to the auxiliary handle.
  • an advantageous at least partial vibration decoupling between the auxiliary handle and the fastening unit, which is preferably provided for attachment to the power tool can be achieved during operation of the power tool.
  • a damping means is additionally provided for fastening the additional handle to the fastening unit, it is possible in particular to advantageously save further components for fastening the auxiliary handle to the fastening unit.
  • "intended” should be understood to mean in particular specially equipped and / or designed.
  • the auxiliary handle has an end region facing the fastening unit and the damping unit is arranged at least partially along an axial direction between the end region and the fastening unit, whereby the
  • Damping unit can be arranged at least partially along a path of a vibration propagation within the auxiliary handle device advantageously before the auxiliary handle, in particular in front of a handle portion of the auxiliary handle.
  • An "axial direction" of the auxiliary handle should be understood to mean a direction of the additional handle, which is preferably aligned along a length of the auxiliary handle
  • End region in particular a region of the auxiliary handle are understood, which is arranged along the axial direction at one end of the auxiliary handle facing region and along the axial direction an extension of preferably not more than 20% and more preferably at most 10% of a longitudinal extent of the auxiliary handle includes.
  • the additional handle device has a securing element which secures the auxiliary handle to a fastening unit, whereby an advantageous, captive arrangement of the auxiliary handle with the fastening unit can be achieved.
  • a particularly advantageous adaptation of a damping parameter of the damping unit during operation to a vibration behavior of the handheld power tool can be achieved if the securing element is provided for setting at least one damping parameter of the damping unit.
  • the auxiliary handle has a grip sleeve, which at least partially forms a Aufhahme Suite for the damping unit, whereby a structurally simple recording and a compact, especially space-saving arrangement of the damping unit can be achieved within the auxiliary handle device.
  • FIG. 1 shows a hand tool with an additional handle device according to the invention in a schematic representation
  • FIG. 2 shows an additional handle device according to the invention with a damping unit in a schematic sectional view
  • FIG. 3 shows an alternative auxiliary handle device with a support element in a schematic sectional view
  • FIG. 4 shows an alternative auxiliary handle device with a fastening unit, which is screwed to the damping unit, in a schematic sectional illustration
  • FIG. 5 shows an alternative auxiliary handle device with a damping unit, which has a plurality of oscillating legs, in a schematic sectional illustration
  • FIG. 1 shows a hand-held power tool 12a formed by an angle grinder from above.
  • the angle grinder comprises a housing 60a and a main handle 58a integrated in the housing 60a.
  • the main handle 58a extends on a one of a
  • An auxiliary handle device 10a which extends transversely to the longitudinal direction 66a of the angle grinder, is disposed on a front, tool-near region 68a of the angle grinder.
  • the auxiliary handle device 10a is shown in a schematic side view.
  • the auxiliary handle device 10a has an auxiliary handle 14a, a damping unit 16a and a fastening unit 44a.
  • the fixing unit 44a has a bolt-shaped fixing member 70a provided for attachment to the portable power tool 12a, and a disk-shaped base member 72a formed integrally with each other.
  • Damping unit 16a is provided during operation of the power tool 12a to a vibration damping and arranged along a path of a vibration transmission within the auxiliary handle device 10a in front of the auxiliary handle 14a.
  • the damping unit 16a has two damping means 18a, 20a, each formed by a fiber composite, for vibration damping.
  • the damping means 18a, 20a are of a knitted fabric 24a, 26a of a
  • At least one of the two damping means 18a, 20a is formed by a knitted fabric 24a, 26a with an elastomer core arranged therein and / or by a metal wool and / or other materials which the skilled person considers useful is.
  • One of the two damping means 18a is arranged along an axial direction 48a, 50a, which is aligned parallel to a longitudinal extent 42a of the auxiliary handle 14a, between an end portion 46a of the auxiliary handle 14a facing the fastening unit 44a and the fastening unit 44a or its disk-shaped base element 72a.
  • the fastening unit 44a is at least partially mounted in a vibration-decoupled manner relative to the auxiliary handle 14a, and direct vibration transmission during operation of the hand-held power tool 12a via the fastening unit 44a to the auxiliary handle 14a is prevented.
  • annular edge 74a is arranged on the end region 46a of the auxiliary handle 14a facing the fastening unit 44a.
  • the annular rim 74a is disposed in a radial direction 76a in an outer peripheral portion 78a of the end portion 46a and extends therefrom in the direction 48a of the mounting unit 44a.
  • the disk-shaped base element 72a of the fastening unit 44a also has an annular edge 80a for protecting the damping means 18a.
  • This annular edge 80a is arranged on a radially outer edge region 82a of the base element 72a and extends from the base element 72a in the direction 50a of the auxiliary handle 14a.
  • a longitudinal extent 84a of the annular edge 74a of the end portion 46a adds to a longitudinal extent 86a of the annular edge 80a of the
  • Base member 72a along the axial direction 48a, 50a is smaller than a longitudinal extent 88a of the damping means 18a, so that the two annular edges 74a, 80a along the axial direction 48a, 50a are spaced from each other and direct vibration transmission from the mounting unit 44a on the auxiliary handle 14a is prevented.
  • the auxiliary handle device 10a has a securing element 52a, which is arranged in the radial direction 76a in an inner, central region of the auxiliary handle device 10a.
  • the damping means 18a arranged between the end region 46a facing the fastening unit 44a and the fastening unit 44a is arranged in a circumferential direction 90a about the securing element 52a, wherein the securing element 52a and the damping means 18a are arranged at a distance from one another in the radial direction 76a.
  • the securing element 52a is formed by a screw and can be screwed to the fastening unit 44a.
  • the fastening element 70a and the disk-shaped base element 72a have an opening 92a with an internal thread, which is arranged in an inner, central portion 94a along the radial direction 76a.
  • the auxiliary handle 14a For fastening the securing element 52a to the auxiliary handle 14a, the latter has a recess 98a arranged in an inner, middle subregion 96a in the radial direction 76a, through which the securing element 52a is guided.
  • a screw head 100a of the securing element 52a is arranged on a side 102a of the end region 46a facing away from the fastening unit 44a.
  • a cylindrical grip sleeve 54 of the auxiliary handle 14a includes, with a radially inwardly directed surface 104a, a receiving region 56a, which makes it possible to import the securing element 52a.
  • the screw head 100a of the securing element 52a also has, in the radial direction 76a, a greater transverse extent than a transverse extent of the recess 98a of the end region 46a.
  • the further damping means 20a of the damping unit 16a formed by the knitted fabric 26a are arranged.
  • the damping means 20a is arranged between the screw head 100a of the securing element 52a and the side facing away from the fastening unit 44a side 102a of the end portion 46a along the axial direction 48a, 50a.
  • the damping means 20a is annular and arranged in a circumferential direction 90a directly around the securing element 52a.
  • an operator can adjust a damping parameter of the damping unit 16a to a vibration behavior of the handheld power tool 12a by setting a distance equal to the longitudinal extent 88a of the damping means 18a between the attachment unit 44a and the end portion 46a of the auxiliary handle
  • the operator can be adjusted by turning the securing element 52a, such as by means of a screwdriver, which is insertable into the receiving area 56a, and thus a damping property, such as a bias, of the two damping means 18a, 20a can be set.
  • a minimum distance is through the longitudinal extensions 84a, 86a of the two damping means 18a, 20a.
  • the auxiliary handle device 10b has a damping unit 16b with two annular damping means 18b, 20b, an auxiliary handle 14b and a fastening unit 44b.
  • the auxiliary handle device 10b has a bolt-shaped support element 108b, which extends along an axial Direction 48b, 50b extends through a receiving portion 56b of the auxiliary handle 14b.
  • the receiving region 56b is enclosed by a surface 104b, which faces inward in the radial direction 76b, of a grip sleeve 54b of the auxiliary handle 14b.
  • the support member 108b is formed integrally with a fixing member 70b of the fixing unit 44b.
  • the support element 108b or the fastening unit 44b is firmly connected to the auxiliary handle 14b by means of the two damping means 18b, 20b formed by a respective fabric formed from metal 24b, 26b.
  • the two damping means 18b, 20b are respectively arranged in the radial direction 76b between the support element 108b and the grip sleeve 54b.
  • the damping means 18b, 20b are arranged on end regions 46b, 110b of the auxiliary handle 14b, one of the two damping means 18b on the end region 46b facing the fastening unit 44b and the other of the two Damping means 20b is arranged at the end portion 110b facing away from the fastening unit 44b.
  • the gripping sleeve 54b or the auxiliary handle 14b is mounted exclusively by means of the two damping means 18b, 20b with respect to the support element 108b or the fastening unit 44b, so that a direct transmission of vibration during operation of the power tool 12b is substantially prevented.
  • FIG. 4 shows an alternative auxiliary handle device 10c.
  • the auxiliary handle device 10c has a damping unit 16c with a damping means 18c, an additional handle 14c and a fastening unit 44c.
  • the auxiliary handle 14c has a grip sleeve 54c, which forms a receiving region 56c for the damping unit 16c with a radially inwardly facing surface 104c.
  • the auxiliary handle 14c has a partition wall 114c in a central subregion 112c along the axial direction 48c, 50c.
  • the receiving portion 56c for the damping unit 16c extends from the
  • the damping means 18c formed by a knitted fabric 24c fills the receiving area 56c.
  • the fabric 24c formed from a metal is firmly connected to the grip sleeve 54c.
  • the damping means 18c is fixedly connected to a bolt-shaped fastening element 70c of the fastening unit 44c.
  • the fastening element 70c points in a projecting into the receiving area 56c
  • FIG. 5 shows an alternative auxiliary handle device 1 Od.
  • the auxiliary handle device 10d has a damping unit 16d, an auxiliary handle 14d and a fastening unit 44d.
  • the damping unit 16d has three mutually parallel damping means 18d, 20d, of which only two are visible in FIG. 5, each of which is a braid
  • the three damping means 18d, 20d are each formed by an oscillating leg 34d, 36d, wherein the oscillating legs 34d, 36d have a longitudinal extent 4d, which are aligned substantially in an axial direction 48d, 50d or along a longitudinal extent 42d of the auxiliary handle 14d.
  • the vibrating legs 34d, 36d which are formed by a respective plastic cable, are arranged along the axial direction 48d, 50d between one of the fastening units
  • damping means 18d, 20d are arranged pressed with the disk-shaped base element 72d of the fastening unit 44d with an end portion facing the fastening unit 44d and encapsulated by the auxiliary handle 14d with an end region facing the auxiliary handle 14d, so that a firm connection between the auxiliary handle 14d and the Fastening unit 44d by means of the damping unit 16d or the three damping means 18d, 2Od is reached.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Harvester Elements (AREA)

Abstract

L'invention concerne un système de poignée auxiliaire, en particulier pour une machine-outil portative (12a-d), avec une poignée auxiliaire (14a-d) et avec une unité d'amortissement (16a-d) qui présente au moins un élément d'amortissement (18a, 20a; 18b, 20b; 18c; 18d, 20d). Selon l'invention, l'élément d'amortissement (18a, 20a; 18b, 20b; 18c; 18d, 20d) est formé au moins pour partie d'un composite fibreux.
PCT/EP2008/064864 2007-12-27 2008-11-03 Système de poignée auxiliaire Ceased WO2009083314A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007062725.6 2007-12-27
DE200710062725 DE102007062725A1 (de) 2007-12-27 2007-12-27 Zusatzhandgriffvorrichtung

Publications (1)

Publication Number Publication Date
WO2009083314A1 true WO2009083314A1 (fr) 2009-07-09

Family

ID=40229753

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/064864 Ceased WO2009083314A1 (fr) 2007-12-27 2008-11-03 Système de poignée auxiliaire

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DE (1) DE102007062725A1 (fr)
WO (1) WO2009083314A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4011124A1 (de) * 1990-04-06 1991-10-10 Metabowerke Kg Vibrationsgedaempfter handgriff
EP0995553A2 (fr) * 1998-10-19 2000-04-26 Wilhelm Kächele GmbH, Elastomertechnik Poignée à amortissement de vibrations
EP1800805A2 (fr) * 2005-12-23 2007-06-27 HILTI Aktiengesellschaft Poignée d'un outil à main
GB2439217A (en) * 2006-06-16 2007-12-19 Bosch Gmbh Robert Hand machine tool housing
DE102006027774A1 (de) * 2006-06-16 2007-12-20 Robert Bosch Gmbh Handwerkzeugmaschine
WO2008104409A1 (fr) * 2007-02-26 2008-09-04 Robert Bosch Gmbh Manche

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4011124A1 (de) * 1990-04-06 1991-10-10 Metabowerke Kg Vibrationsgedaempfter handgriff
EP0995553A2 (fr) * 1998-10-19 2000-04-26 Wilhelm Kächele GmbH, Elastomertechnik Poignée à amortissement de vibrations
EP1800805A2 (fr) * 2005-12-23 2007-06-27 HILTI Aktiengesellschaft Poignée d'un outil à main
GB2439217A (en) * 2006-06-16 2007-12-19 Bosch Gmbh Robert Hand machine tool housing
DE102006027774A1 (de) * 2006-06-16 2007-12-20 Robert Bosch Gmbh Handwerkzeugmaschine
WO2008104409A1 (fr) * 2007-02-26 2008-09-04 Robert Bosch Gmbh Manche

Also Published As

Publication number Publication date
DE102007062725A1 (de) 2009-07-02

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