EP2237927A1 - Système de poignée auxiliaire - Google Patents

Système de poignée auxiliaire

Info

Publication number
EP2237927A1
EP2237927A1 EP08866340A EP08866340A EP2237927A1 EP 2237927 A1 EP2237927 A1 EP 2237927A1 EP 08866340 A EP08866340 A EP 08866340A EP 08866340 A EP08866340 A EP 08866340A EP 2237927 A1 EP2237927 A1 EP 2237927A1
Authority
EP
European Patent Office
Prior art keywords
auxiliary handle
handle device
damping
partially
grip sleeve
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Withdrawn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
EP08866340A
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 EP2237927A1 publication Critical patent/EP2237927A1/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Withdrawn legal-status Critical Current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
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
    • B23B45/001—Housing of the drill, e.g. handgrip
    • 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

Definitions

  • the invention is based on an additional handle device according to the preamble of claim 1.
  • the invention is based on an auxiliary handle device, in particular for a hand-held power tool, with an auxiliary handle which has a grip sleeve and a support element, and a damping unit which has at least one damping means.
  • a "support element” should be understood to mean, in particular, an element which contributes to an advantageous rigidity of the auxiliary handle and / or extends in particular along a longitudinal extension of the auxiliary handle through the additional handle.
  • the additional handgrip device according to the invention can in principle be used in conjunction with all handheld machine tools which appear meaningful to a person skilled in the art, in which, in particular, guidance of handheld power tools by means of the additional handle is made easier for an operator its damping characteristic, the auxiliary handle device in conjunction with an angle grinder is particularly advantageous.
  • the grip sleeve at least partially forms a receiving area for receiving the damping unit, whereby a structurally simple mounting and a compact, in particular space-saving arrangement of the damping unit can be achieved within the auxiliary handle device.
  • the attachment unit is preferably provided for attachment of the auxiliary handle device with the power tool.
  • a particularly space-saving arrangement of the support element can be advantageously achieved if the support element is at least partially bolt-shaped and / or at least partially formed by a sleeve.
  • a "bolt-shaped support element” is to be understood in particular as a support element which has a length that is greater than a thickness and a width and / or a diameter of the support element.
  • the damping unit is at least partially provided for a mounting of the grip sleeve.
  • the term "intended” should be understood to mean in particular specially equipped and / or specially designed. taltung advantageously can be achieved at least partially vibration decoupled Lagerang the grip sleeve with respect to the power tool during operation of the power tool and thus an at least reduced vibration guidance of the power tool by the auxiliary handle device for an operator can be achieved.
  • the additional handle has at least one locking element which is provided for locking the grip sleeve in an axial direction.
  • an "axial direction” is to be understood as meaning, in particular, a direction which extends essentially parallel to a longitudinal extension of the auxiliary handle device the locking element to be understood. It can thereby advantageously arranged the grip sleeve captive within the auxiliary handle device and also a vibration of a counteracting movement of the grip sleeve during operation of the power tool allows.
  • the locking element is at least partially fixedly arranged on the support element, whereby a structurally simple arrangement of the locking element can be achieved.
  • the locking element can be integrally formed with the support element, welded, screwed and / or fixedly arranged on the support element by means of other fastening types that appear appropriate to the person skilled in the art.
  • the damping unit has at least two damping means, which are arranged spaced from one another in a circumferential direction, whereby a particularly uniform vibration damping of a grip area in the circumferential direction can be achieved.
  • a "circumferential direction” should be understood to mean, in particular, a direction about a circumference of the auxiliary handle device, wherein the circumferential direction or circumference extends within a plane which is aligned substantially perpendicular to a longitudinal extent of the auxiliary handle device.
  • the damping means is formed by a spring element, whereby structurally simple vibration damping and / or vibration decoupling of the auxiliary handle can be achieved before in the operation of the hand tool on the additional handle device transmitted vibrations and / or vibrations.
  • a "spring element” should be understood to mean, in particular, an element which has a specific shape which is responsible for absorption or absorption of, in particular, external forces acting on the spring element, such as a vibration force and / or a vibratory force, preferably elastic is deformable and then its initial shape due to an inner, due to the external shape of the element force that counteracts the forces acting from the outside, again receives.
  • the spring element is at least partially formed by a helical spring, whereby structurally simple vibration damping along different preferred directions, in particular along an axial direction and a radial direction of the coil spring, can be achieved.
  • the spring element is at least partially formed by a bellows, whereby advantageously a uniform vibration damping can be achieved in at least one direction.
  • a "bellows” should be understood to mean, in particular, a spring element which is preferably elastically bellows-type, in particular folded, such as accordion-shaped.
  • the bellows is at least partially formed from a rubber and / or a plastic and / or a metallic bellows.
  • the bellows is particularly advantageously provided for vibration damping in a damping direction which is oriented essentially transversely to its longitudinal extension.
  • Longitudinal extension of the bellows should be understood to mean, in particular, a direction along which folds of the bellows are arranged one after the other.
  • substantially transversely to a longitudinal extent is to be understood in particular as meaning a direction of the bellows which is preferably at an angle between 70 ° and 110 °, particularly advantageously at an angle between 80 ° and 100 ° and particularly preferably at an angle between 85 ° and 95 ° to the longitudinal extent.
  • FIG. 1 shows a hand tool with a erfmdungswashen additional handle device in a schematic representation
  • Fig. 2 shows the auxiliary handle device with one of a coil spring and a damping means formed by an elastomer in a schematic representation
  • Fig. 3 the auxiliary handle device with several to a bolt-shaped
  • Damping means which is arranged around a supporting element formed by a sleeve, in a schematic sectional view in an axial direction (Fig. 5a) and in a radial direction (Fig. 5b) and Fig. 6a, 6b, the auxiliary handle device with a plurality of damping means to a supporting element formed by a sleeve are arranged, in a schematic sectional view in an axial direction (Fig. 6a) and in a radial direction (Fig. 6b).
  • FIG. 1 shows a hand-held power tool 12a formed by an angle grinder in a view from above.
  • the hand tool 12a comprises a housing 60a and a main handle 58a integrated in the housing 60a.
  • the main handle 58a extends a side 64a facing away from a tool 62a formed by a cutting disk in the direction of a longitudinal direction 66a of the hand tool 12a.
  • an auxiliary handle device 10a Arranged on a front, tool-near region 68a of the handheld power tool 12a is an auxiliary handle device 10a which extends transversely to the longitudinal direction 66a of the handheld power tool 12a.
  • the auxiliary handle device 1 Oa can be seen in a sectional view.
  • the auxiliary handle device 10a has an auxiliary handle 14a, a fastening unit 30a and a damping unit 20a.
  • the fastening unit 30a is provided for fastening the auxiliary handle device 10a to the hand tool 12a and for this purpose has a bolt-shaped fastening element 70a which extends away from the auxiliary handle 14a along an axial direction 36a, 38a of the auxiliary handle 14a.
  • the axial direction 36a, 38a extends parallel to a longitudinal extension 72a of the auxiliary handle 14a.
  • the auxiliary handle 14a has a grip sleeve 16a which, with a surface 74a which faces in a radial direction 26a, forms a receiving region 28a which is provided for receiving the damping unit 20a.
  • the auxiliary handle 14a has two end regions 76a, 78a which are arranged along the axial direction 36a, 38a on an end 80a facing the fastening unit 30a and on an end 82a of the grip sleeve 16a facing away from the fastening unit 30a.
  • the grip sleeve 16a is also integrally formed with the two end portions 76a, 78a of the auxiliary handle 14a.
  • the auxiliary handle 14a has a support element 18a, which is formed integrally with the fastening element 70a of the fastening unit 30a and extends along the axial direction 36a, 38a through the receiving region 28a of the auxiliary handle 14a.
  • the support member 18a is bolt-shaped and arranged in the radial direction 26a in a central region 84a. Between the support member 18a and the grip sleeve 16a is in the radial
  • the damping unit 20a arranged, which has a plurality of, each formed by a spring element 46a damping means 22a and a plurality of each formed by an elastomer 86a damping means 24a, of which in the schematic sectional view in Figure 2 each one can be seen.
  • the spring elements 46a are also formed by coil springs 50a, which are arranged biased against a spring force.
  • the damping means 24a formed by the elastomers 86a and the coil springs 50a are arranged alternately and uniformly spaced in a circumferential direction 40a about the support member 18a.
  • the grip sleeve 16a points outward on a side 88a which faces inward in the radial direction 26a, and the support element 18a extends outward in a radial direction 26a.
  • the damping unit 20a further comprises two damping means 92a, 94a, each formed by an elastomeric ring 96a, 98a.
  • the elastomeric rings 96a, 98a are also disposed within the receiving portion 28a between the grip sleeve 16a and the support member 18a in the radial direction 26a.
  • One of the two elastomer rings 96a is in this case arranged in the axial direction 36a, 38a in a region 100a of the receiving region 28a facing the fastening unit 30a and the further of the two elastomer rings 98a in a region 102a of the receiving region 30a facing away from the fastening unit 30a.
  • the grip sleeve 16a is mounted opposite the support element 18a, so that a direct transmission of vibration during operation of the power tool 12a to the grip sleeve 16a is prevented.
  • the two elastomer rings 96a, 98a are molded onto the grip sleeve 16a and the support element 18a during a production process.
  • a vibration damping in the radial direction 26a by a damping force of the elastomers 86a and the elastomeric rings 96a, 98a counteracts a vibrational movement in the radial direction 26a.
  • a distance 104a between the grip sleeve 16a and the support element 18a in the region of the recesses 42a, 44a for supporting the coil springs 50a is greater than a diameter in the radial direction 26a
  • the coil springs 50a are provided together with the elastomers 86a and the two elastomer rings 96a, 98a for vibration damping in the axial direction 36a, 38a. If vibrations and / or vibrations are transmitted to the auxiliary handle device 10a via the fastening unit 30a during operation of the handheld power tool 12a, the damping unit 20a or the damping means 22a, 24a, 92a, 94a provides vibration damping in the radial and axial directions 26a, 36a, 38a.
  • a spring force of the coil springs 50a and damping forces of the elastomers 86a and the elastomeric rings 96a, 98a counteracts a vibration movement in the axial direction 36a, 38a and the damping forces of the elastomers 86a and the E lastomerringe 96a, 98a also act in the radial direction 26a of Contrary to vibrational motion.
  • FIGS. 1 and 2 the reference numerals of the embodiments, the letters a to e are added. The following description is essentially limited to the differences from the exemplary embodiment in FIGS. 1 and 2, wherein reference can be made to the description of the exemplary embodiment in FIGS. 1 and 2 with regard to components, features and functions remaining the same.
  • FIG. 3 shows an alternative auxiliary handle device 10b with an additional handle 14b and a damping unit 20b.
  • the damping unit 20b has four of each one
  • Spring element 46b, 48b formed damping elements 22b, 24b, which are arranged in a circumferential direction 40b by approximately 90 ° uniformly spaced.
  • the spring elements 46b, 48b are formed from a spring steel and fixed to a support member 18b of the auxiliary handle 14b.
  • the spring elements 46b, 48b can be formed from a metal knit, a metal net, individual fibers, such as carbon fibers and / or other materials and / or formations that appear to be suitable for the person skilled in the art.
  • the spring elements 46b, 48b have a folded structure 108b along their longitudinal extension 110b, wherein the longitudinal extension 110b of the spring elements 46b, 48b is aligned substantially parallel to a longitudinal extension 72b of the auxiliary handle 14b. In the radial direction 26b, the spring elements 46b, 48b are between an inwardly facing surface
  • a grip sleeve 16b of the auxiliary handle 14b and the support member 18b the spring elements 46b, 48b biased against a spring force of the spring elements 46b, 48b arranged between the grip sleeve 16b and the support member 18b, so that due to the bias, the grip sleeve 16b by means of spring elements 46b, 48b on the auxiliary handle 14b and on the support member 18b is stored.
  • An end region 76b of the auxiliary handle 14b or the grip sleeve 16b facing a fastening unit 30b has a recess 112b, through which the support element 18b is guided.
  • a diameter 114b of the recess 112b is greater in the radial direction 26b than a diameter 116b of the support element 18b, so that the support element 18b is arranged at a distance from the end region 76b and a direct transmission of vibration during operation of a handheld power tool 12b to the grip sleeve 16b is prevented.
  • damping of the vibrations and / or vibration is achieved by means of the spring elements 46b, 48b Vibrations in the axial direction 36b, 38b, by a spring force of the spring elements 46b, 48b counteracts a vibrational movement in the axial direction 36b, 38b.
  • FIG. 4 shows an alternative auxiliary handle device 10c with an additional handle 14c and a damping unit 20c.
  • the damping unit 20c has a damping means 22c, which is formed by a bellows 52c.
  • the bellows 52c is disposed in a circumferential direction 40c about a support member 18c of the auxiliary handle 14c and disposed along a radial direction 36c, 38c between a grip sleeve 16c and the support member 18c.
  • the bellows 52c has a longitudinal extent 56c which is substantially parallel to a longitudinal extent 72c of the auxiliary handle 14c.
  • the support member 18c is arranged analogously to the description of the description of FIG.
  • the bellows 52c is fixedly connected to the support element 18c.
  • the bellows 52c bears against a limiting disk 124c which, together with a fastening element 126c, secures the bellows 52c along the axial direction 36c, 38c.
  • the fastener 126c faces at a radial direction
  • the fastening element 126c along the axial direction 36c, 38c has a recess 130c, through which the support element 18c is guided, wherein a diameter 132c of the recess 130c is larger than a diameter 116c of the support element 18c, so that the support element 18c in the radial direction 26c spaced from the fastener 126c is arranged.
  • the limiting disc 124c is screwed to the support element 18c and bears against a side 134c of the fastening element 126c facing the fastening unit 30c.
  • a diameter 136c of the limiting disk 124c is smaller than the diameter 138c of a receiving region 28c of the auxiliary handle 14c, so that the supporting element 18c is movably arranged together with the limiting disk 124c in the radial direction 26c.
  • a damping parameter of the bellows 52c can be set in the form of a pretension by turning the fastening element 126c along the bellows 52c Longitudinal extension 56c available area of the receiving area can be changed by an operator.
  • Damping means 22d which is formed by a formed of a folded spring steel spring element 46d.
  • the spring element 46d is arranged in a radial direction 26d between a support element 18d formed by a sleeve 32d and a grip sleeve 16d of the auxiliary handle 14d (FIG. 5a).
  • the spring element 46d is arranged circumferentially around the support element 18d in a circumferential direction 40d (FIG. 5b), so that a vibration damping which is uniform in the circumferential direction 40d can take place during operation of a handheld power tool 12d.
  • the damping unit 20d with a plurality of spring elements 22d arranged successively in the circumferential direction 40d or with a plurality of spring elements 46d arranged successively in the axial direction 36d, 38d.
  • the support element 18d is integral with one in the axial direction 36d, 38d on the auxiliary handle 14d in the direction of a fastening unit
  • the fastening unit 30d has a fastening element 7Od, which can be clamped around a receiving flange of the handheld power tool 12d.
  • FIGS. 6a and 6b show an alternative auxiliary handle device 10e with an additional handle 14e and a damping unit 20e.
  • the damping unit 20e has a plurality of damping means 22e, 24e, each formed by a spring element 46e, 48e.
  • the spring elements 46e, 48e are each formed by a helical spring 5Oe, 14Oe.
  • the coil springs 5Oe, 14Oe are arranged in a circumferential direction 4Oe uniformly spaced apart from one another. net (FIG. 6b) and have a longitudinal extension 11 Oe, which is aligned substantially parallel to a longitudinal extension 72e of the auxiliary handle 14e (FIG. 6a).
  • the coil springs 5Oe, 14Oe are arranged between a support element 18e and a grip sleeve 16e.
  • the support member 18e and the grip sleeve 16e are analogous to the description of FIGS 5a and 5b formed or disposed within the auxiliary handle device.
  • the coil springs 5Oe, 14Oe each have an oblique winding for their longitudinal extent HOe for advantageous vibration damping, in particular in a radial direction 26e, as is particularly advantageous with a hand tool 12e, which is formed by a hammer drill, a percussion drill.
  • the coil springs 5Oe, 14Oe are in this case loaded with a vibration damping to a diameter 106e out.
  • the support element 18e and the grip sleeve 16e each have a recess 42e, 44e on each of the coil springs 5Oe, 14Oe facing side 88e, 9Oe, in which the coil springs 5Oe, 14Oe are supported and thus undesirable rotational movement the grip sleeve 16e is prevented relative to the support element 18e during operation of the power tool.
  • vibrations are transmitted to the auxiliary handle device 1 Oe and damped by the coil springs 5Oe, 14Oe.
  • the coil springs 5Oe, 14Oe are moved against a spring force by a force of the oscillations.
  • a storage of the grip sleeve 16e by means of
  • the auxiliary handle device 1 Oe has a fastening unit 30e, which is designed analogously to the description relating to FIGS. 5a and 5b.

Landscapes

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

Abstract

L'invention concerne un système de poignée auxiliaire, en particulier pour une machine-outil portative (12a-e), avec une poignée auxiliaire (14a-e) qui présente une gaine de poignée (16a-e) et un élément de soutien (18a-e), et avec une unité d'amortissement (20a-e) qui présente au moins un élément d'amortissement (22a, 24a; 22b, 24b; 22c; 22d; 22e, 24e). Selon l'invention, l'élément d'amortissement (22a, 24a; 22b, 24b; 22c; 22d; 22e, 24e) est disposé au moins en partie entre l'élément de soutien (18a-e) et la gaine de poignée (16a-e) dans une direction radiale (26a-e).
EP08866340A 2007-12-27 2008-11-13 Système de poignée auxiliaire Withdrawn EP2237927A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710062716 DE102007062716A1 (de) 2007-12-27 2007-12-27 Zusatzhandgriffvorrichtung
PCT/EP2008/065440 WO2009083329A1 (fr) 2007-12-27 2008-11-13 Système de poignée auxiliaire

Publications (1)

Publication Number Publication Date
EP2237927A1 true EP2237927A1 (fr) 2010-10-13

Family

ID=40107430

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08866340A Withdrawn EP2237927A1 (fr) 2007-12-27 2008-11-13 Système de poignée auxiliaire

Country Status (3)

Country Link
EP (1) EP2237927A1 (fr)
DE (1) DE102007062716A1 (fr)
WO (1) WO2009083329A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011082271B4 (de) * 2011-09-07 2024-07-18 Robert Bosch Gmbh Tragbare Werkzeugmaschine
EP3266568A1 (fr) * 2016-07-05 2018-01-10 Bama S.p.A. Poignée ergonomique et élastique
CN219311210U (zh) 2021-05-14 2023-07-07 创科无线普通合伙 一种用于动力工具的手柄
JP7840822B2 (ja) * 2022-08-30 2026-04-06 株式会社マキタ 打撃工具用補助グリップ

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE474728C (de) * 1927-07-21 1929-04-09 Paul Klug Werkzeug fuer geradlinige Arbeitsbewegungen
JPS6044530B2 (ja) * 1980-03-13 1985-10-04 正治 窪川 振動機器の防振緩衝把手
AU7190981A (en) * 1980-06-22 1982-03-04 Kazuto Seto Vibration isolation type handle device
DE19848126A1 (de) * 1998-10-19 2000-04-27 Wilhelm Kaechele Gmbh Elastome Schwingungsgedämpfter Handgriff
DE10055395A1 (de) * 2000-11-09 2002-05-29 Bosch Gmbh Robert Handwerkzeugmaschinenhandgriff
CN2537524Y (zh) * 2002-04-30 2003-02-26 苏州宝时得电动工具有限公司 带有至少一个手柄的电动工具机
DE10348974A1 (de) * 2003-10-22 2005-05-25 Carl Freudenberg Kg Vibrationsgedämpfter Handgriff

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009083329A1 *

Also Published As

Publication number Publication date
WO2009083329A1 (fr) 2009-07-09
DE102007062716A1 (de) 2009-07-02

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