EP2139648B1 - Poignée présentant un élément d'amortissement avec une unité d'articulation. - Google Patents

Poignée présentant un élément d'amortissement avec une unité d'articulation. Download PDF

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Publication number
EP2139648B1
EP2139648B1 EP08717597A EP08717597A EP2139648B1 EP 2139648 B1 EP2139648 B1 EP 2139648B1 EP 08717597 A EP08717597 A EP 08717597A EP 08717597 A EP08717597 A EP 08717597A EP 2139648 B1 EP2139648 B1 EP 2139648B1
Authority
EP
European Patent Office
Prior art keywords
handle
joint
damping
ball
joint unit
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.)
Active
Application number
EP08717597A
Other languages
German (de)
English (en)
Other versions
EP2139648A1 (fr
Inventor
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
Priority claimed from DE202007017264U external-priority patent/DE202007017264U1/de
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority claimed from PCT/EP2008/052850 external-priority patent/WO2008110546A1/fr
Publication of EP2139648A1 publication Critical patent/EP2139648A1/fr
Application granted granted Critical
Publication of EP2139648B1 publication Critical patent/EP2139648B1/fr
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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
    • B25F5/02—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
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/04—Handles; Handle mountings
    • B25D17/043—Handles resiliently mounted relative to the hammer housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/006—Vibration damping means

Definitions

  • the invention relates to a handle, in particular additional handle, for a hand tool according to the preamble of claim 1.
  • auxiliary handle for a hand tool with a handle element is described, which is connectable via an insulating device for vibration isolation with a housing of the power tool.
  • the insulating device has a bearing booklet over which the handle element is guided in at least one direction.
  • the JP 2004 249430 A teaches a vibration damped handle with a handle member and a fastener. On the fastening element, a ball element is arranged. The gripping element is connected to a receptacle which engages around the ball element, wherein a space filled with a damping means is arranged between the ball element and receptacle.
  • EP 1 514 648 A2 is a handle for a hand tool, with a handle core, via which the handle with the hand tool (101, 201) is connectable, and with a handle member which connects via a hinge unit with the handle core is described. Further, an elastic damping means is disposed between the handle core and the handle member.
  • the EP 1 714 748 A describes a hand tool with a housing and a main handle.
  • the housing has, at a end facing the main handle, a part-spherical end area which, in a direction away from the main handle, merges into a cylindrical portion.
  • the main handle has a concave portion at an end facing the housing, which surrounds the part-spherical end portion of the housing , To the cylindrical portion of an elastic damping element is arranged.
  • the handle includes a switch that is electrically connected to the power cord.
  • an annular elastic damping element is arranged between the base body and the handle.
  • the main body has on a side facing the handle a part-spherical hinge unit with a bore through which an electrical line of the power cord is guided on the handle a receptacle for the hinge unit is arranged, wherein the receptacle has a spherical inner surface and engages around the hinge unit.
  • the annular damping element is spaced from the receptacle and disposed about the receptacle
  • the EP 1 707 323 A1 describes a handle for a hand tool, with a handle core and with a cylindrical handle element. About the handle core of the handle is connected to the power tool.
  • the grip core has three partial regions, the partial region facing the grip element being cylindrical and the central partial region being spherical.
  • the handle core is arranged in a cavity of the grip element, wherein a spherical inner surface of the grip element partially surrounds the spherical portion of the grip core.
  • a spherical inner surface of an end plate engages around the spherical portion of a side opposite the handle member.
  • the spherical portion has two surfaces on which elastic discs are arranged.
  • annular damping element is disposed between the handle member and the cylindrical portion of the handle core
  • the invention relates to a handle for a hand tool with a handle element and a fastening element for fastening the handle to a hand tool and a damping element with a hinge unit and with a multi-axis hinge unit, wherein the hinge unit is a ball joint.
  • the handle is particularly suitable as an additional handle.
  • the ball joint has an elastic ball element (33), wherein the ball element (33) consists of an elastomer.
  • the joint unit has more degrees of freedom than the joint unit of a handle known from the prior art.
  • the joint unit is a three-axis joint unit.
  • the hinge unit has three degrees of freedom and allows movement of the handle member relative to the fastener in all directions and also has a vibration-damping effect.
  • the elastic joint unit has the advantage that, after a deflection of the grip element relative to the fastening element, the grip element experiences a restoring force due to the elasticity, so that it returns to its starting position.
  • the ball joint advantageously allows a relative movement of the handle member to the fastener equally in all directions.
  • the multi-axis articulation unit comprising at least a first and a second joint element, is particularly elastic in that at least the first joint element or the second joint element is elastic, in particular made of an elastomer. Likewise, both the first and the second joint element may be elastic, in particular made of an elastomer.
  • a connecting element between the grip element and the fastening element is designed as an elastic ball element, which is accommodated in the grip element and the fastening element.
  • the ball element forms the first joint element, which is mounted in the second joint element, the receptacle in the grip element and fastening element.
  • the elastic multi-axis joint unit is formed by supporting a rigid ball element in an elastic material, in particular an elastomer.
  • the rigid ball element forms the first joint element. It can be formed either on the fastening element or on the handle element. Alternatively, it may also be a separate ball element, which is connected to either the fastener or the handle member.
  • the elastic receptacle for the rigid ball element forms the second joint element. It can e.g. be molded onto the handle element and / or the fastening element made of a thermoplastic elastomer.
  • the damping element comprises a securing element, which e.g. prevents the separation of the handle member from the fastener in the event of failure of the damping element.
  • the fuse element is e.g. centered in the handle between the fastener and the handle member arranged.
  • the grip element can be separated from the fastener.
  • the grip element is thus secured against tearing by the securing element.
  • the securing element may be designed as a movably mounted, rigid rod, e.g. in the form of a screw, a bolt, etc.
  • the securing element may be formed by a flexible component, such as a flexible band, rope, braid made of metal or plastic.
  • a second damping element is provided in addition to the multi-axis joint unit.
  • the second damping element preferably comprises at least one spring element.
  • a spring element in particular a package of disc springs can be used.
  • Other spring elements such as leaf springs, coil springs, etc. can also be used.
  • Other forms of damping elements such as elastic material, such as elastomer, foam, or with a fluid, such as air, oil, filled damping pads are also used in combination with the multi-axis joint unit.
  • An elastic damping element of an elastic material or of a spring element has the advantage that it can be designed so that its bias is adjustable. This can be the
  • the second damping element may be formed of an elastic material and arranged between the handle and a housing of a hand tool.
  • the damping element is formed substantially in the form of a disc which is clamped between the handle member and an outer surface of the housing.
  • the damping element is arranged with hinge unit in the handle.
  • the joint unit is arranged in a housing of the power tool. If necessary, both embodiments can also be combined, so that a multiaxial joint unit can be found both in the housing of a handheld power tool and in the handle.
  • the fastening element can be designed in different ways. It can e.g. a threaded bolt, wherein the protruding from the handle end is threaded to screw the fastener into the housing of a power tool. Instead of a thread, e.g. a tensioning device may be provided for connecting the handle to the housing of a hand tool machine.
  • the fastening element may be designed in the form of a receiving sleeve with a nut.
  • the receiving sleeve serves to receive a screw which is connectable to the nut.
  • a screw may be attached to the housing of the power tool.
  • the screw is inserted into the receiving sleeve and bolted to the nut.
  • the screw may for example be attached to the housing via a tensioning device.
  • the fastening element may additionally be provided with a carrier element.
  • the fastener may e.g. be included in a support element.
  • the handle according to the invention preferably has the shape of a style, rod or the like.
  • the handle element of the handle has a substantially cylindrical shape. This may be a cylinder in a simple embodiment.
  • the cylindrical gripping element can also be adapted to the ergonomics of the human hand by having, for example, different diameters apart from a pure cylindrical shape along its longitudinal axis.
  • the gripping element can be rotationally symmetrical, so that the handle can be grasped in any orientation by the operator.
  • the gripping element can also be so specially adapted to the ergonomics of the human hand that a first area of the gripping element serves specifically as a support surface for the palm and a second area as a support surface for the fingers.
  • the handle element can be made in one piece or in several parts.
  • a handle having a one-piece handle member has a rod-shaped handle member, e.g. made of a thermoplastic material, with a fastening element at one end of the grip element.
  • a two-part handle element for example, has a handle core made of a hard material, e.g. a thermoplastic, and a handle made of a soft material, e.g. an elastic plastic.
  • the handle cover can completely or partially surround the handle core.
  • the hand tool is in particular an angle grinder, a drill or impact drill or a screwdriver or drill.
  • a first embodiment of a handle 100 according to the invention is shown.
  • the handle 100 is suitable as an additional handle for a hand tool (not shown). It comprises a grip element 20, a fastening element 10 with carrier element 15 and a damping element 30 arranged between grip element 20 and carrier element 15 or fastening element 10.
  • the grip element 20 is executed in a style and cylindrical. In the interior of the grip element 20, a cavity 21 is formed.
  • the cavity 21 may optionally be coated with a damping material, e.g. a foam, an elastomer or with a fluid (air, water, oil) filled pillows, honeycomb or the like. filled out.
  • the handle 100 is connectable via a fastening element 10, which is connected to the carrier element 15, with a housing of a hand tool machine.
  • the fastener 10 is in the illustrated embodiment, a threaded bolt, the free end is provided with a thread and protrudes from the handle 100 and the support member 15 so that it can be screwed into a housing of a power tool.
  • a damping element 30 with at least one hinge unit 32, 52 is provided.
  • the hinge units 32, 52 according to Fig. 1 and 2 are three-axis joint units, in the three-axis joint unit 32, 52 to an elastic ball joint.
  • the hinge units 32, 52 are formed elastically in that at least one component of the multi-axis hinge unit is formed from an elastomer.
  • Fig. 1 shows a first embodiment of an elastic ball joint.
  • An elastic ball element 33 forms a first joint element 38.
  • the ball element 33 forms a connecting element between the grip element 20 and the fastening element 10.
  • the ball element 33 is arranged in a complementary receptacle 34 in the grip element 20 and the fastening element 10.
  • the receptacle 34 forms a second hinge element 39.
  • the receptacle 34 is formed by the fastening element 10 and the grip element 20 each having a substantially hemispherical receptacle 35, 36.
  • the ball element 33 consists of an elastomer, for example a thermoplastic elastomer, which can be injected between the grip element 20 and the fastening element 10 by means of an injection molding process. In this case, the projecting into the support member 15 end of the fastener 10, here the head of the threaded bolt, overmolded.
  • On the handle member 20 may also be provided a screw 22 which is encapsulated by the e
  • the handle 100 is also equipped with a securing element 40 which, in the event of failure of the damping element 30, prevents the separation of the grip element 20 from the fastening element 10 or the carrier element 15.
  • the securing element 40 is arranged substantially centered in the handle 100 between the fastening element 10 and the grip element 20. In case of failure of the damping element 30 due to damage or fatigue of the damping material is prevented by the securing element 40 that the handle member 20 can be separated from the fastener 10.
  • the securing element 40 is formed by a flexible component, for. B. a flexible band, rope, braid or the like. made of metal or plastic.
  • Fig. 2 shows a second embodiment of a handle 200 according to the invention with a hinge unit 52 in the form of an elastic ball joint.
  • the first hinge element 38 of the ball joint is made of a rigid ball element 53 formed.
  • the rigid ball element 53 is formed on the fastening element 10 in the illustrated embodiment.
  • the receptacle 54 for the ball member 53 forms the second hinge member 39.
  • the receptacle 54 is formed in a complementary to the ball member 53 form of an elastic material, such as an elastomer.
  • the receptacle 54 therefore has essentially the shape of a hollow sphere.
  • a second damping element 35 is provided.
  • the second damping element 35 comprises in the illustrated embodiment, a package of disc springs.
  • Other spring elements such as leaf springs, coil springs, etc. can also be used.
  • Other forms of damping elements such as elastic material, for example elastomer, foam, or with a fluid, for example air, oil, filled damping cushions can also be used in combination with the multi-axis joint unit 52.
  • the damping element 35 is arranged in the grip element 20 below the joint unit 52.
  • a disk 41 with thread (not shown) is arranged adjacent to the damping element 35.
  • the disk 41 is slidably mounted in its axial position along the longitudinal axis of the handle member 20. Thereby, the disc 41 can be moved upward to increase the bias on the damping element 35. Alternatively, the disc 41 may be moved down within the handle member 20 to reduce the bias on the damping member 35.
  • the bias of the damping element 35 is advantageously adjustable so that the user of the power tool 200 can adapt the handle 200 according to the invention to the particular application by increasing or decreasing the bias to achieve a lower or stronger vibration damping.
  • Another damping element 37 is provided in the form of a bending bar spring. This extends axially in the cavity 21 of the handle member 20.
  • the flexure spring is connected to the fastener 10 via the ball member 53.
  • the bending bar spring is supported on a plug 23 from.
  • FIG Fig. 3 A third embodiment of a handle 300 according to the invention with a hinge unit 62 in the form of an elastic ball joint is shown in FIG Fig. 3 shown.
  • an elastic ball element 33 forms a first joint element 38.
  • the ball member 33 according to Fig. 3 arranged in a housing 60 of a power tool, wherein the housing 60 in Fig. 3 only partially indicated.
  • the ball element 33 is accommodated in a complementary receptacle 64 in the housing 60 for this purpose.
  • the receptacle 64 forms a second joint element 39.
  • the ball element 33 consists of an elastomer, for example a thermoplastic elastomer, which can be injected into the receptacle 64 by means of an injection molding process.
  • the fastener 10 in the form of a threaded bolt is provided with a thread (not shown).
  • the elastic ball member 33 has a receptacle 63 with a thread corresponding to the fastening element 10 corresponding internal thread (not shown), so that the fastener 10 in the receptacle 63, and thus in the housing 60 of the power tool, can be screwed.
  • a second damping element 55 is provided, which is formed from an elastic material, in particular from an elastomer.
  • the second damping element 55 is arranged between the grip element 20 and the housing 60 of the power tool. In particular, it is clamped between the grip element 20 and the housing 60.
  • the damping element 55 is located on the one hand on the flange 15 of the handle member 20, on the other hand on the outer surface 61 of the housing 60 at. It has a passage 56 for the fastening element 10.

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

Abstract

L'invention porte sur une poignée, en particulier une poignée auxiliaire pour une machine outil manuelle avec un élément de saisie (20) et un élément de fixation (10) pour fixer la poignée sur une machine outil manuelle ainsi qu'un élément d'amortissement (30) avec une unité d'articulation (32, 52), l'unité d'articulation (32, 52, 62) étant à plusieurs axes.

Claims (13)

  1. Poignée, notamment poignée auxiliaire, pour une machine-outil à main, comprenant un élément de préhension (20) et un élément de fixation (10) pour la fixation de la poignée à une machine-outil à main, ainsi qu'un élément d'amortissement (30) avec une unité d'articulation à plusieurs axes (32, 52, 62), l'unité d'articulation (32, 52, 62) étant une articulation à rotule, caractérisée en ce que l'articulation à rotule présente un élément de rotule élastique (33), l'élément de rotule (33) se composant d'un élastomère.
  2. Poignée selon la revendication 1, caractérisée par une unité d'articulation à trois axes (32, 52, 62).
  3. Poignée selon au moins la revendication 1, caractérisée en ce que l'unité d'articulation (32, 62) présente un premier et un deuxième élément d'articulation (38, 39), le premier élément d'articulation (38) étant réalisé sous forme élastique.
  4. Poignée selon l'une quelconque des revendications 1 ou 3, caractérisée en ce que le deuxième élément d'articulation (39) de l'unité d'articulation (52) est réalisé sous forme élastique.
  5. Poignée selon l'une quelconque des revendications 1, 3 ou 4, caractérisée en ce que le premier et/ou le deuxième élément d'articulation (38, 39) sont formés d'un élastomère.
  6. Poignée selon l'une quelconque des revendications précédentes, caractérisée en ce qu'un élément de rotule rigide (53) est monté dans un logement (54) en matériau élastique, notamment en un élastomère.
  7. Poignée selon l'une quelconque des revendications précédentes, caractérisée en ce que l'élément d'amortissement (30) comprend un élément de fixation (40).
  8. Poignée selon l'une quelconque des revendications précédentes, caractérisée en ce qu'au moins un deuxième élément d'amortissement (50, 55) est prévu en plus de l'unité d'articulation à plusieurs axes (52).
  9. Poignée selon la revendication 8, caractérisée en ce que le deuxième élément d'amortissement (50) comprend au moins un élément de ressort.
  10. Poignée selon la revendication 8, caractérisée en ce que le deuxième élément d'amortissement (55) est formé d'un matériau élastique et est disposé entre la poignée et un boîtier (60) d'une machine-outil à main.
  11. Poignée selon l'une quelconque des revendications précédentes, caractérisée en ce que l'unité d'articulation (32, 52) est disposée dans la poignée.
  12. Poignée selon l'une quelconque des revendications 1 à 10, caractérisée en ce que l'unité d'articulation (62) est disposée dans un boîtier (60) de la machine-outil à main.
  13. Machine-outil à main comprenant une poignée selon l'une quelconque des revendications précédentes.
EP08717597A 2007-03-15 2008-03-11 Poignée présentant un élément d'amortissement avec une unité d'articulation. Active EP2139648B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE202007017264U DE202007017264U1 (de) 2007-03-15 2007-03-15 Handgriff
DE102008012380A DE102008012380A1 (de) 2007-03-15 2008-02-28 Handgriff
PCT/EP2008/052850 WO2008110546A1 (fr) 2007-03-15 2008-03-11 Poignée présentant un élément d'amortissement avec une unité d'articulation.

Publications (2)

Publication Number Publication Date
EP2139648A1 EP2139648A1 (fr) 2010-01-06
EP2139648B1 true EP2139648B1 (fr) 2012-06-06

Family

ID=39688446

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08717597A Active EP2139648B1 (fr) 2007-03-15 2008-03-11 Poignée présentant un élément d'amortissement avec une unité d'articulation.

Country Status (2)

Country Link
EP (1) EP2139648B1 (fr)
DE (1) DE102008012380A1 (fr)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10130548B4 (de) 2001-06-25 2008-01-03 Robert Bosch Gmbh Zusatzhandgriff

Also Published As

Publication number Publication date
EP2139648A1 (fr) 2010-01-06
DE102008012380A1 (de) 2008-09-18

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