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WO2009083299A1 - Système de poignée auxiliaire - Google Patents

Système de poignée auxiliaire Download PDF

Info

Publication number
WO2009083299A1
WO2009083299A1 PCT/EP2008/064792 EP2008064792W WO2009083299A1 WO 2009083299 A1 WO2009083299 A1 WO 2009083299A1 EP 2008064792 W EP2008064792 W EP 2008064792W WO 2009083299 A1 WO2009083299 A1 WO 2009083299A1
Authority
WO
WIPO (PCT)
Prior art keywords
auxiliary handle
handle device
damping
damping means
partially
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/EP2008/064792
Other languages
German (de)
English (en)
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
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to EP08867725A priority Critical patent/EP2237930A1/fr
Publication of WO2009083299A1 publication Critical patent/WO2009083299A1/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
    • B25F5/02—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
    • 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 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.
  • an "additional handle” is to be understood as meaning an area and / or a component and / or an element which constitutes an application, in particular a grasping, by a hand or several hands of an operator for the purpose of guiding a handheld power tool is provided by means of RajhandgriffVorrich- device and in addition to another handle, in particular the main handle, additionally attachable to the hand tool, the Rajhandgriffvor- direction is arranged laterally on the hand tool and / or can be assembled and disassembled 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.
  • the term "provided” should be understood to mean especially specially equipped and / or specially designed.
  • a vibration damping along an axial direction which essentially corresponds to a preferred direction of a vibration propagation within the auxiliary handle device, and along a radial direction, so that the grip region is arranged at least partially vibration-decoupled relative to the handheld power tool.
  • the auxiliary handle device is in conjunction with a
  • the auxiliary handle has a grip sleeve, which forms at least partially a Aufhahme Suite for receiving the damping unit, whereby a structurally simple recording and a compact, especially space-saving arrangement of
  • Damping unit can be achieved within the auxiliary handle device.
  • the grip sleeve can be at least partially decoupled or isolated during operation of the handheld power tool against vibrations and / or vibrations that are transmitted to the auxiliary handle device.
  • the support element extends along a longitudinal direction at least partially through the auxiliary handle.
  • the support element can be bolted shaped and in particular integrally formed with the fastening unit or be formed by an inner sleeve of the auxiliary handle.
  • a particularly uniform vibration damping and / or vibration decoupling of a grip region of the auxiliary handle during operation of the handheld power tool can be achieved structurally simple if the damping means is arranged at least partially along a circumferential direction around a support element of the auxiliary handle.
  • 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 unit has at least two damping means, which are arranged one after the other along 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 damping unit has at least two Dämpfiingsstoff spaced in a circumferential direction to each other, whereby a particularly circumferential in the circumferential direction vibration damping and / or a uniform vibration de-coupling of the auxiliary handle or a handle portion of the auxiliary handle can be achieved.
  • a structurally simple and in particular cost-effective vibration damping and / or vibration decoupling of the auxiliary handle transmitted during operation of the power tool on the auxiliary handle device vibrations and / or vibrations can be achieved if the damping means is at least partially formed by a spring element.
  • a "spring element” should be understood to mean, in particular, an element which has a special 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 vibration.
  • ration force preferably elastically deformable and then its initial shape due to an inner, due to the external shape of the element force, which counteracts the forces acting from the outside, again receives.
  • the additional handle has an intermediate sleeve on which the
  • Spring element is at least partially supported in a radial direction.
  • the spring element is supported in a middle region along a longitudinal extent of the spring element on the intermediate sleeve, wherein the intermediate sleeve has a recess for this purpose, through which the
  • Spring element is guided.
  • the spring element in the region of a support on the intermediate sleeve has a smaller turn diameter, so that in this way a series-connected double damping can be realized by means of the damping means.
  • 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 helical spring has at least two differing turns diameter, whereby a movement compensating for a vibration movement in a radial direction of the helical spring can be achieved particularly easily.
  • the helical spring has at least two tapered, mutually extending partial regions.
  • the coil spring is in this case aligned with a longitudinal extent along an axial direction of the auxiliary handle device.
  • the damping means at least partially has a grid-like structure, whereby an advantageous vibration damping along different directions can be achieved.
  • a "lattice-like structure” should be understood to mean, in particular, a three-dimensionally networked structure, wherein individual structural elements are fibrous and / or rod-like with their longitudinal structures. Extent can be aligned to create the three-dimensional structure in different directions, the longitudinal directions of the individual structural elements span a three-dimensional space.
  • an alignment of individual structural elements to one another and / or an angle between two structural elements can be formed depending on a desired damping property or depending on a material.
  • Vibration damping arranged the structural element against a damping force under a bias within the damping unit, so that in addition an advantageous stiffness of the auxiliary handle, in particular the grip area is achieved and thus a high ease of use for an operator is reached.
  • the damping means is at least partially formed by an air cushion, whereby an at least partial vibration decoupling of the grip portion can be achieved by the hand tool in operation.
  • an "air cushion” is to be understood as meaning, in particular, a space filled with air, which preferably has a characteristic of suspension or damping Room air flowing generates, so that the grip sleeve can be stored in particular on the air cushion vibration decoupling.
  • the auxiliary handle has a support element with at least one air duct.
  • the support element preferably has an air inlet opening.
  • the air inlet opening is formed at least partially integrally with a fastening unit
  • a fan of the handheld power tool can be used to generate an air flow for the air cushion, thereby saving further components, such as an extra fan of the auxiliary handle device, at low cost.
  • an exhaust air flow of the handheld power tool can be used to generate the damping means formed by the airflow.
  • the auxiliary handle device has its own, separately formed by the fan of the power tool fan for generating the air flow.
  • the support element has at least one air outlet opening in a region of a grip sleeve, whereby structurally simple, the air cushion can be arranged preferably in the radial direction between the grip sleeve and the support element and thus advantageously at least partially a vibration transmission from the support member to the grip sleeve can be reduced.
  • the damping means at least partially has a friction surface, by means of which the damping means with a further component to a vibration damping performs a friction movement, whereby advantageously by means of the damping means, a vibration energy can be converted into a friction energy.
  • the damping means particularly advantageously has a surface with a coefficient of friction matched to a vibration behavior of the hand-held power tool.
  • a damping of the damping means additional vibration damping can be achieved by a spring force of the spring element and it can also be an advantageous return of the damping means for a vibration damping and thus a high ease of use for a
  • the damping unit has at least one ball joint, which is provided for mounting the damping means on a support element, whereby at least partially a vibration-decoupled mounting of the damping means with respect to the support element can be achieved.
  • the damping means by means of the ball joint can advantageously perform a countermovement to a vibratory movement of the support element.
  • the damping means at least partially an elastic
  • Oscillating leg has.
  • an "elastic oscillating leg” should be understood to mean in particular an elastic element which is fixed along at least one end along its longitudinal extension, in particular on a base body of the damping means, and which is fixed along the longitudinal extent at an opposite end arranged end is arranged movable or deflectable in at least two spatial dimensions and more preferably in at least three spatial dimensions.
  • the friction surface is connected to the main body of the damping means by means of the elastic vibrating leg.
  • the elastic oscillating leg can be web-shaped or at least partially formed by a frusto-conical sleeve and / or further elastic elements which appear to be suitable for the person skilled in the art.
  • Fig. 1 is a hand tool with an inventive auxiliary handle device in a schematic representation, Fig. 2, the auxiliary handle device with one of a coil spring
  • FIG. 3 shows the auxiliary handle device with an alternative embodiment of the spiral spring of the damping unit to FIG. 2, in a perspective sectional representation
  • the auxiliary handle device formed with a plurality of coil springs
  • Damping means which are arranged on a bolt-shaped support element, in a perspective sectional view,
  • FIG. 5 shows the auxiliary handle device with a plurality of damping means formed by coil springs, which are arranged on a sleeve-shaped support element, in a perspective sectional view,
  • auxiliary handle device formed with a plurality of coil springs
  • Damping means which are supported on an intermediate sleeve, in a perspective sectional view
  • 7 shows the auxiliary handle device with a lattice-like structure having damping means in a perspective sectional view
  • Friction surfaces and elastic oscillating legs has, in a perspective view sectional view
  • FIG. 11 shows the auxiliary handle device with a damping means formed by an air cushion in a perspective sectional view.
  • 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 102a and a main handle 100a integrated in the housing 102a.
  • the main handle 100a extends on a side facing away from a tool 104a formed by a cutting tool 104a in the direction of a longitudinal direction 108a of the power tool 12a.
  • An auxiliary handle device 10a which extends transversely to the longitudinal direction 108a of the handheld power tool 12a, is arranged on a front, tool-near region 110a of the handheld power tool 12a.
  • the auxiliary handle device 10a is shown in a sectional view.
  • the auxiliary handle device 10a has an auxiliary handle 14a, a fastening unit 74a and a damping unit 16a.
  • the fastening unit 74a is provided for fastening the auxiliary handle device 10a to the handheld power tool 12a and for this purpose has a bolt-shaped fastening element 112a which extends away from the auxiliary handle 14a along an axial direction 28a, 30a of the auxiliary handle 14a.
  • the axial direction 28a, 30a runs parallel to a longitudinal extension 114a of the auxiliary handle 14a.
  • the auxiliary handle 14a has a gripping sleeve 32a, which forms a receiving region 34a with a surface 116a which faces inward in a radial direction 26a, which serves to receive the damping unit 16a is provided.
  • the auxiliary handle 14a has two end regions 118a, 120a, which are arranged along the axial direction 28a, 30a on an end 122a facing the fastening unit 74a and on an end 124a of the grip sleeve 32a facing away from the fastening unit 74a.
  • the end region 118a facing the fastening unit 74a is connected to the fastening element 112a by means of a material-form and / or non-positive connection.
  • the damping unit 16a has a damping means 18a, which is formed by a spring element 40a and is provided for vibration damping along different directions 26a, 28a, 30a.
  • the different directions 26a, 28a, 30a are formed by the axial direction 28a, 30a and the radial direction 26a.
  • the spring element 40a is formed by a helical spring 50a, which has a longitudinal extent 126a which runs essentially parallel to the longitudinal extent 114a of the auxiliary handle 14a.
  • the coil spring 50a is disposed in the radial direction 26a between the grip sleeve 32a and a support member 36a.
  • the support member 36a is bolt-shaped and has a longitudinal extension 128a, which is substantially parallel to the axial direction 28a, 30a of the auxiliary handle 14a.
  • the support element 36a is arranged along the radial direction 26a in a middle region 130a of the auxiliary handle 14a and extends along the axial direction 28a, 30a through the receiving region 34a.
  • the coil spring 50a is arranged in a circumferential direction 38a around the support member 36a.
  • the coil spring 50a has two portions 62a, 64a each tapered and extending toward each other so that a center 132a of the coil spring 50a has a smallest coil diameter 58a.
  • the center 132a of the coil spring 50a with the smallest coil diameter 58a bears against a surface of the support element 36a which faces outward in the radial direction 26a.
  • the end regions 134a, 136a of the helical spring 50a are for this purpose encapsulated by the grip sleeve 32a or a material of the grip sleeve 32a, so that the helical spring 50a is fixedly connected to the grip sleeve 32a.
  • the grip sleeve 32a is bisected along the axial direction 28a, 30a, the two end portions 134a, 136a encapsulated by the grip sleeve 32a Coil spring 50a with different grip sleeve elements 140a, 142a are connected.
  • the grip sleeve 32a is formed separately in a region 144a facing the attachment unit 74a.
  • the grip sleeve element 140a facing the fastening unit 74a has a length 146a along the axial direction 28a, 30a which is at most 20% and particularly preferably at most 10% of a length 148a along the axial direction 28a, 30a of the grip sleeve element 142a facing away from the fastening unit 74a corresponds, so that an ease of use for an operator by means of the auxiliary handle device 10a is fully retained and almost an entire used by an operator handle portion 150a is integrally formed.
  • the grip area 150a used by the operator or the grip sleeve element 142a facing away from the fastening unit 74a is arranged at least partially in vibration-decoupled manner with respect to the grip sleeve element 140a facing the fastening unit 74a.
  • the grip sleeve element 142a facing away from the fastening unit 74a is secured to the grip sleeve element 140a facing the fastening unit 74a by a plurality of securing elements 152a distributed uniformly in the circumferential direction 38a in the axial direction 28a, 30a in the event of an undesired defect of the coil spring 50a.
  • the securing elements 152a are each formed by a cable, which connect the two grip sleeve elements 140a, 142a in the axial direction 28a, 30a and also allow mobility of the two grip sleeve elements 140a, 142a in the radial direction 26a and in the axial direction 28a, 30a.
  • the securing elements 152a during a production process of the grip sleeve 32a of a
  • the support element 38a is also fastened to the grip sleeve 32a or to the grip sleeve element 142a facing away from the attachment unit 74a.
  • the support element 38a has a fastening disk 154a, which has a main extension surface 156a, which is aligned essentially transversely to the longitudinal extent 128a of the support element 36a.
  • the fastening disk 154a is encapsulated on the outer edge region 158a in the radial direction 26a by the grip sleeve 32a or by a material of the grip sleeve 32a and thus firmly connected to the grip sleeve 32a.
  • the fastening washer 154a is located after the end region 136a of the coil spring 50a facing away from the fastening unit 74a Grip sleeve 32a arranged.
  • the fixing washer 154a is formed integrally with the support member 36a. In principle, however, it is also conceivable for the fastening disk 154a and the support element 36a to be screwed together and / or to be fixedly arranged on one another by further types of fastening that appear appropriate to the person skilled in the art.
  • vibrations and / or vibrations are transmitted to the auxiliary handle 14a via the fastening unit 74a.
  • the vibrations and / or vibrations are transmitted to the coil spring 50a of the damping unit 16a, so that the damping unit 16a is arranged upstream of the gripping region 150a or the gripping sleeve element 142a facing away from the fastening unit 74a along a vibration propagation within the auxiliary handle device 10a
  • the helical spring 50a or a spring force of the helical spring 50a counteracts a vibratory force of the transmitted vibrations along the axial direction 28a, 30a and along the radial direction 26a, so that the grip sleeve element 142a facing away from the fastening unit 74a is virtually vibration-decoupled in operation with respect to the handheld power tool 12a ,
  • FIG. 3 shows an auxiliary handle device 10b which is an alternative to FIG.
  • the auxiliary handle device 10b has an auxiliary handle 14b and a damping unit 16b with a damping means 18b, which is formed by a helical spring 50b and is provided for vibration damping along a radial and an axial direction 26b, 28b, 30b.
  • the auxiliary handle 14b has a grip sleeve 32b, which is formed in one piece and forms a receiving area 34b for receiving the damping unit 16b with a surface 116b facing inward in the radial direction 26b.
  • the coil spring 50b is analogous to the description of Figure 2 is formed and arranged with end portions 134b, 136b on the grip sleeve 32b.
  • the end regions 134b, 136b are encapsulated by a material of the grip sleeve 32b, so that the coil spring 50b is fixedly arranged on the grip sleeve 32b.
  • a support member 36b of the auxiliary handle 14b is formed integrally with a fixing member 112b of a fixing unit 74b and extends along the axial direction 28b, 30b through the receiving portion 34b.
  • An attachment portion 74b facing end portion 118b of the auxiliary handle 14b has in the radial direction 26b in a centrally disposed portion 160b a recess 162b through which the fastener 112b and the support member 36b is guided, wherein the recess 162b has a diameter 164b, the larger is arranged as a diameter 166b of the support element 36b so that it is spaced from a surface 168b of the end region 118b which faces inward in the radial direction 26b and a direct transmission of vibration is at least partially prevented during operation of the handheld power tool 12b on the grip sleeve 32b. a vibration damping in the radial direction 26b by means of the coil spring 50b is possible.
  • the fastening unit 74b has a securing element 170b, which is disc-shaped and which is arranged along the axial direction 28b, 30b from the receiving region 34b in the direction of the fastening unit 74b to the end region 118b of the auxiliary handle 14b.
  • a maximum possible deflection during oscillation damping of the auxiliary handle 14b with respect to the fastening unit 74b or the handheld power tool 12b in the axial direction 28b, 30b is fixed.
  • a vibration damping is analogous to the description of Figure 1 by the spring 50b is deflected against a spring force in the radial and / or axial direction 26b, 28b, 30b at a vibration transmission to the auxiliary handle device 1 Ob, so that the grip sleeve 32b at least partially vibration decoupled is stored during operation of the power tool 12b.
  • FIG. 4 shows an alternative auxiliary handle device 10c with an additional handle 14c and a damping unit 16c.
  • the auxiliary handle device 10c differs from the auxiliary handle device 10c of Figure 3 in that the damping unit 16b a plurality of damping means 18c, 20c, 22c, 24c, each formed by a spring element 40c, 42c, 44c, 46c and respectively to a vibration damping in axial and are provided in the radial direction 26c, 28c, 30c.
  • the spring elements 40c, 42c, 44c, 46c are each formed by a helical spring 50c, 52c, 54c, 56c and in this case have a longitudinal extent 126c, which are aligned substantially transversely to a longitudinal extent 128c of a support element 36c.
  • the coil springs 50c, 52c, 54c, 56c are arranged with an end portion 172c facing a gripping sleeve 32c, encased by a material of the gripping sleeve 32c and supported Radial direction 26c inwardly on the support member 36c from, wherein the coil springs 50c, 52c, 54c, 56c are arranged here biased to pressure and are fixedly connected to the support member 36c.
  • Two of the coil springs 50c, 52c, 54c, 56c are respectively disposed along the axial direction 28c, 30c in a plane 178c, 180c, 182c and disposed in a circumferential direction 38c equally spaced on opposite sides of the support member 36c.
  • the coil springs 50c, 52c, 54c, 56c which are arranged in the axial direction 28c, 30c in a plane 178c, 180c, 182c, to the axial direction 28c, 30c respectively adjacent coil springs 50c, 52c, 54c, 56c by 90 ° offset in the circumferential direction 38c.
  • the coil springs 50c, 52c, 54c, 56c are spaced from each other. In principle, it is also conceivable for a person skilled in the art that a number and / or a number
  • Position and / or a spring force of the coil springs 50c, 52c, 54c, 56c are variable in a further embodiment of the invention and so a damping property and / or a guiding property to a vibration behavior of the power tool 12c is adaptable.
  • An attenuation principle is analogous to the description of FIGS. 2 and 3.
  • FIG. 5 shows an alternative auxiliary handle device 10d with an additional handle 14d and a damping unit 16d.
  • the damping unit 16d has a plurality of damping means 18d, 20d, 22d, 24d which are each formed by a helical spring 5Od, 52d, 54d, 56d and, as described for FIG. 4, are arranged within a receiving region 34d of the auxiliary handle 14d.
  • the coil springs 5Od, 52d, 54d, 56d are each to a
  • a support element 36d of the auxiliary handle 14d is formed by a sleeve 174d, which is formed integrally with end regions 118d, 12Od in the axial direction 28d, 30d of the auxiliary handle 14d.
  • the damping unit 16d or the damping means 18d, 20d, 22d, 24d are located between a surface 176d of the sleeve 174d facing outward in the radial direction 26d and one in the radial direction
  • the grip sleeve 32d is formed separately from the two end portions 118d, 12Od and the sleeve 174d of the auxiliary handle 14d and supported exclusively by means of the damping means 18d, 20d, 22d, 24d.
  • the grip sleeve 32d is arranged along the axial direction 28d, 30d spaced from the two end regions 118d, 12Od of the auxiliary handle 14d, so that a direct
  • FIG. 6 shows an alternative auxiliary handle device 10e with an additional handle 14e and a damping unit 16e.
  • the damping unit 16e has a plurality of damping means 18e, 20e, 22e, 24e, which are each formed by a helical spring 5Oe, 52e, 54e, 56e and provided for vibration damping in the axial and radial directions 26e, 28e, 30e.
  • the coil springs 5Oe, 52e, 54e, 56e are arranged in three mutually spaced planes 178e, 180e, 182e, and within a plane four of the coil springs 50e, 52e, 54e, 56e are arranged in a circumferential direction 38e at 90 ° to each other.
  • the auxiliary handle 14e has a support element 36e which extends along the axial direction 28e, 30e through the auxiliary handle 14e and which is formed integrally with a fastening element 112e of a fastening unit 74e.
  • the support member 36e and the fastener 112e is formed analogously to the description of Figure 3.
  • the auxiliary handle 14e has an intermediate sleeve 48e which is integrally formed with end regions 118e, 12Oe of the auxiliary handle 14e arranged in the axial direction 28e, 30e and is arranged in the radial direction 26e between the support element 36e and a grip sleeve 32e of the auxiliary handle 14e.
  • the helical springs 5Oe, 52e, 54e, 56e have a longitudinal extent 126e, which runs essentially transversely to a longitudinal extension 114e of the auxiliary handle 14e.
  • the coil springs 5Oe, 52e, 54e, 56e have, along their longitudinal extent 126e, a coil diameter 58e at a center 132e which is smaller than a coil diameter 6Oe of a grip sleeve 32e and a portion 62e, 64e of the coil springs 50e facing the support element 36e, 52e, 54e, 56e.
  • a diameter of the recesses 184e corresponds to a winding diameter 58e of the center 132e of the coil springs 50e, 52e, 54e, 56e, so that the coil springs 50e, 52e, 54e, 56e are clamped in the recesses 184e.
  • the two of the grip sleeve 32e and the support member 36e facing portions 62e, 64e act as two series-connected coil springs.
  • FIG. 7 shows an alternative auxiliary handle device 10f with an additional handle 14f and a damping unit 16f.
  • the damping unit 16f has a damping means 18f formed by a spring element 4Of, which is provided for a vibration damping in an axial and a radial direction 26f, 28f, 30f.
  • the auxiliary handle 14d has a support element 36f, which is formed integrally with a fastening element 112f of a fastening unit 74f and is designed analogously to the description of FIG. 3 or is arranged within the auxiliary handle device 1 Of.
  • the spring element 4Of has a grid-like structure 66f, which is formed by a three-dimensional net-like arrangement.
  • the spring element 4Of has a repeating three-dimensional grid substructure 186f along the axial direction 28f, 30f, so that subregions 188f of the gripper sleeve 32f arranged on a grip sleeve 32f
  • Spring element 4Of along the axial direction 28f, 30f are equally spaced.
  • the grid substructure 186f repeats in a circumferential direction 38f about the support element 36f, so that a uniform circumferential bearing 38f of the grip sleeve 32f or a uniform vibration damping during operation is achieved.
  • the spring element 40f is arranged biased against a spring force between the grip sleeve 32f and the support element 36g.
  • a material of the spring element 4Of can be formed by a wire, a fiber material, such as a carbon fiber material, and / or other materials which appear appropriate to the person skilled in the art.
  • the spring member 4Of On the support member 36f, the spring member 4Of is fixed by the support member 36f not shown and extending in the circumferential direction 38f extending grooves in which the spring element 4Of is guided and is secured against axial displacement relative to the support member 36f.
  • the spring element 4Of can also be materially connected to the support element 36f.
  • the gripping sleeve 32f is connected to the partial areas 188f of the spring element 4Of facing the gripping sleeve 32f in the radial direction 26f by means of an encapsulation process.
  • FIG. 8 shows an alternative auxiliary handle device 10g with an additional handle 14g and a damping unit 16g.
  • the damping unit 16g has a damping means 18g formed by a spring element 40g, which is provided for vibration damping in an axial and a radial direction 26g, 28g, 30g.
  • the spring element 40g has a ball-shaped basic body 190g and eight friction elements 192g, 194g, each with a friction surface 80g,
  • the friction elements 192g, 194g are each connected by means of an elastic oscillating leg 92g, 94g, which are formed of an elastic plastic, with the base body 190g.
  • the elastic oscillating legs 92g, 94g it is also conceivable for the elastic oscillating legs 92g, 94g to be made of a carbon fiber material and / or further materials that appear appropriate to the person skilled in the art are formed.
  • the elastic oscillating legs 92g, 94g are also formed integrally with the main body 190g and the friction elements 192g, 194g.
  • the oscillating legs 92g, 94g form an acute angle with the radial and the axial direction 26g, 28g, 30g and are arranged in a circumferential direction 38g uniformly spaced from one another on the main body 190g.
  • Four of the friction elements 192g are arranged along the axial direction 28g, 30g of a Aufhahmebe- area 34g in the direction of a mounting unit 74g in front of the main body 190g and the other four friction elements 194g after the main body 190g.
  • the friction surfaces 80g, 82g lead to a vibration damping a friction movement on another component 84g or lie during an axial movement of the further component 84g, wherein the further component 84g is formed by a grip sleeve 32g of the auxiliary handle 14g.
  • the damping unit 16g has two support disks 196g, 198g, each on a side facing away from the main body 190g in the axial direction 28g, 30g side 200g, 202g on the friction elements 192g, 194g are arranged.
  • the support disks 196g, 198g facing away from the spring element 40g are each supported with a plurality of spring elements 88g, 90g formed on the grip sleeve 32g or on a surface 206g of the grip sleeve 32g facing in the axial direction 28g, 30g, so that the Friction surfaces 80g, 82g along the axial direction 28g, 30g are supported.
  • the friction elements 192g, 194g are supported directly via the spring elements 88g, 90g.
  • the base body 190g and the support plate 196g facing the fastening unit 74g have a recess 208g, 210g extending in the axial direction 28g, 30g, through which a support element 36g of the auxiliary handle 14g is guided.
  • the support member 36g is integrally formed with a fixing member 112g of the fixing unit 74g, the support member 36g having a smaller diameter 166g along the radial direction 26g than a diameter 212g of the fixing member 112g.
  • An arrangement of the fastening element 112 g or of the support element 36 g is analogous to the description of FIG. 3.
  • the support element 36g is firmly connected to the main body 190g, so that an oscillation transmitted by the handheld power tool 12g to the attachment unit 74g is forwarded directly to the damping unit 16g.
  • Vibrational energy causes the spring member 40g to move with respect to the grip sleeve 32g, and a spring force of the spring member 40g and the coil springs and a frictional force of the friction members 192g, 194g counteract movement of the spring member 40g.
  • a storage of the grip sleeve 32g is carried out exclusively via the damping unit 16g.
  • FIG. 9 shows an alternative auxiliary handle device 10h with an additional handle 14h and a damping unit 16h.
  • the damping unit 16h has a damping means 18h formed by a spring element 40h, which is provided for a vibration damping in an axial and a radial direction 26h, 28h, 30h.
  • the damping means 18h is formed analogously to the description of FIG.
  • Damping means 18h is connected via a ball joint 86h with a support member 36h or mounted thereon.
  • the support disk 196h is fixedly arranged along the axial direction 28h, 30h in the region of the base body 190h on a grip sleeve 32h.
  • the coil springs are respectively secured to the support disk 196h.
  • the friction elements 192h, 194h are supported on the grip sleeve 32h via the support disk 196h and the coil springs. Damping is analogous to the description of FIG. 8.
  • An arrangement or design of a support element 36h of the auxiliary handle 14h is analogous to the description of FIG. 8.
  • FIG. 10 shows an alternative auxiliary handle device 10i with an additional handle 14i and a damping unit 16i.
  • the damping unit 16i has a damping means 18i formed by a spring element 4Oi, which is provided for vibration damping in an axial and a radial direction 26i, 28i, 30i.
  • the spring element 4Oi has a sleeve-shaped main body 19Oi with a recess 21Oi, which is arranged on a support element 36i of the auxiliary handle 14i analogously to the description of FIG.
  • the support element 36i is also formed integrally with a fastening element 112i of a fastening unit 74i analogously to FIG. 8 and arranged correspondingly within the auxiliary handle 14i.
  • the spring element 4Oi is essentially the same as that described with reference to FIG. 9 or supported on a grip sleeve 32i.
  • the main body 19Oi is integrally formed with friction elements 192i, 194i by means of two elastic oscillating legs 92i, 94i, which are each formed by a cone-shaped sleeve 96i, 98i.
  • the truncated conical sleeves 96i, 98i are arranged on the main body 19Oi along the axial direction 28i, 30i.
  • the friction elements 192i, 194i are also formed by two circumferentially 38i on a radially inward direction 26i inwardly facing surface 116i of the grip sleeve 32i adjacent rings.
  • FIG. 11 shows an alternative auxiliary handle device 10j with an additional handle 14j and a damping unit 16j.
  • the damping unit 16j has damping means 18j, which in an operation of the handheld power tool 12j is formed by an air cushion 68j and is provided for vibration damping in a radial and an axial direction 26j, 28j, 30j.
  • the air cushion 68j is arranged in the radial direction 26j between a grip sleeve 32j and a support element 36j and in the axial direction 28j, 30j between end portions 118j, 12Oj of the auxiliary handle 14j formed integrally with the support element 36j.
  • the end portion 118j facing a fixing unit 74j is formed integrally with a fixing member 112j of the fixing unit 74j.
  • the grip sleeve 32j is also formed separately from the support member 36j and the end portions 118j, 12Oj.
  • Air cushion 68j in operation of the power tool 12j, the support member 36j an air channel 7Oj, which extends in the radial direction 26j in an inner region 22Oj along the axial direction 28j, 30j in the support member 36j.
  • the air channel 7Oj extends in the radial direction 26j within the two end regions 118j, 12Oj of the auxiliary handle 14j.
  • the support element 36j furthermore has an air inlet opening 72j, which is formed integrally with the fastening element 112j and is arranged on a side 222j of the fastening element 112j facing away in the axial direction 28j, 30j of the grip sleeve 32j, so that, during operation of the hand tool 12j, one of A stream of air 224j generated by a fan, not shown in detail, of the handheld power tool 12j can be directed into the air channel 7Oj and can be used for vibration damping or vibration decoupling of the grip sleeve 32j.
  • an air inlet opening 72j which is formed integrally with the fastening element 112j and is arranged on a side 222j of the fastening element 112j facing away in the axial direction 28j, 30j of the grip sleeve 32j, so that, during operation of the hand tool 12j, one of A stream of air 224j generated by a fan, not shown in detail, of the handheld power tool 12j can be directed
  • the support element 36j has a plurality of air outlet openings 76j, which are arranged in a region 78j of the grip sleeve 32j.
  • the air outlet openings 76j extend from the air channel 7Oj in the radial direction 26j outward or from the two end portions 118j, 12Oj in the direction of the grip sleeve 32j, so that during operation of the power tool 12j an air cushion 68j and an air flow 224j between the grip sleeve 32j and the support element 36j or the two
  • End regions 118j, 12Oj can flow. Oscillations and / or vibrations transmitted by the power tool 12j cause a vibration movement and / or a vibration movement of the support element 36j together with the two end regions 118j, 12Oj with respect to the grip sleeve 32j, the vibration movement and / or the vibration movement resulting in a compression of the between the Grip sleeve 32j and the support member 36j and the end portions 118j,

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  • 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-j), avec une poignée auxiliaire (14a-j) et avec une unité d'amortissement (16a-j) qui présente au moins un élément d'amortissement (18a; 18b; 18c-e; 20c-e; 22c-e; 24c-e; 18f-j). Selon l'invention, l'élément d'amortissement (18a; 18b; 18c-e; 20c-e; 22c-e; 24c-e; 18f-j) est prévu pour un amortissement des vibrations dans différentes directions (26a-j, 28a-j; 30a-j).
PCT/EP2008/064792 2007-12-27 2008-10-31 Système de poignée auxiliaire Ceased WO2009083299A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08867725A EP2237930A1 (fr) 2007-12-27 2008-10-31 Système de poignée auxiliaire

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007062718.3 2007-12-27
DE200710062718 DE102007062718A1 (de) 2007-12-27 2007-12-27 Zusatzhandgriffvorrichtung

Publications (1)

Publication Number Publication Date
WO2009083299A1 true WO2009083299A1 (fr) 2009-07-09

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ID=40262118

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Application Number Title Priority Date Filing Date
PCT/EP2008/064792 Ceased WO2009083299A1 (fr) 2007-12-27 2008-10-31 Système de poignée auxiliaire

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Country Link
EP (1) EP2237930A1 (fr)
DE (1) DE102007062718A1 (fr)
WO (1) WO2009083299A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12021437B2 (en) 2019-06-12 2024-06-25 Milwaukee Electric Tool Corporation Rotary power tool
US12434369B2 (en) 2021-05-14 2025-10-07 Techtronic Cordless Gp Handle for use with a power tool

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201011978D0 (en) * 2010-07-15 2010-09-01 Black & Decker Inc Side handle
EP3266568A1 (fr) * 2016-07-05 2018-01-10 Bama S.p.A. Poignée ergonomique et élastique

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2071809A (en) * 1980-03-13 1981-09-23 Kubokawa M Vibration prevention handle
GB2095362A (en) * 1980-12-11 1982-09-29 Seiko Giken Kk Vibration-damping handles

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2071809A (en) * 1980-03-13 1981-09-23 Kubokawa M Vibration prevention handle
GB2095362A (en) * 1980-12-11 1982-09-29 Seiko Giken Kk Vibration-damping handles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12021437B2 (en) 2019-06-12 2024-06-25 Milwaukee Electric Tool Corporation Rotary power tool
US12434369B2 (en) 2021-05-14 2025-10-07 Techtronic Cordless Gp Handle for use with a power tool

Also Published As

Publication number Publication date
EP2237930A1 (fr) 2010-10-13
DE102007062718A1 (de) 2009-07-02

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