EP2222440B1 - Auxiliary handle device - Google Patents

Auxiliary handle device Download PDF

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Publication number
EP2222440B1
EP2222440B1 EP08858972A EP08858972A EP2222440B1 EP 2222440 B1 EP2222440 B1 EP 2222440B1 EP 08858972 A EP08858972 A EP 08858972A EP 08858972 A EP08858972 A EP 08858972A EP 2222440 B1 EP2222440 B1 EP 2222440B1
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EP
European Patent Office
Prior art keywords
auxiliary handle
handle device
damping
supporting
damping means
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP08858972A
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German (de)
French (fr)
Other versions
EP2222440A2 (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
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Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2222440A2 publication Critical patent/EP2222440A2/en
Application granted granted Critical
Publication of EP2222440B1 publication Critical patent/EP2222440B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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 damping unit has a damping means to a vibration damping.
  • the invention relates to an auxiliary handle device, in particular for a hand tool, with an auxiliary handle and a damping unit comprising at least one damping means, wherein the damping means is at least partially formed by a damping cushion, wherein the auxiliary handle has a handle portion with at least one support structure, at least partially surrounds a receiving area for the damping means and wherein the support structure comprises at least one support structure element.
  • the support structure element is at least partially formed by a support spring.
  • an "additional handle” is to be understood as an area and / or a component and / or an element which constitutes an application, in particular a gripping, by a hand or several hands of an operator, for the purpose of guiding a handheld power tool by means of the auxiliary handle device, is provided and in particular, in addition to another handle, in particular the main handle, in addition to the hand tool machine is attachable, wherein the auxiliary handle device is arranged laterally on the hand tool and / or without tools by an operator on the hand-tool can be assembled or disassembled and / or arranged in a front, near the tool area of the power tool and / or the auxiliary handle is rod-shaped.
  • a "cushioning pad” should be understood to mean, in particular, a structure of the damping means which has an outer shell which surrounds a volume which is preferably filled by a filler which has a combination with the shell and / or vibration damping properties.
  • the filler is particularly advantageously formed by a fluid, such as, for example, a gas, a liquid and / or particularly advantageously by a gel, etc., and / or by further fillers which appear expedient to the person skilled in the art.
  • the sheath of the damping pad is formed by another, preferably elastic material than the filler. In principle, it is also conceivable for a filler with preferably low flow properties that the damping pad is formed only by the filler.
  • a "support structure” should be understood to mean, in particular, a structure which has at least one support function and / or which in particular is a frame-like arrangement around an element and / or component, preferably a shaping of the element and / or component, in particular the damping cushion, is arranged.
  • a “supporting spring” is to be understood in particular to mean a thread-like helical spring which is arranged supportingly around the damping cushion in the circumferential direction.
  • auxiliary handle device is basically used in conjunction with all hand tool machines that appear useful to the person skilled in the art, in which, in particular, guidance of hand tool machines by means of the additional handle is made easier for an operator. Due to their damping properties Shaft is the additional handle device in conjunction with an angle grinder particularly advantageous.
  • the damping means is formed by a gel pad, whereby a flexible, in particular spatial, adaptation of the damping means can be achieved.
  • an advantageous vibration damping can be achieved by means of the gel pad.
  • the support structure has at least one support structure element, which is preferably at least partially formed by a support ring, an advantageous shaping of the damping cushion in a circumferential direction of the auxiliary handle can be achieved.
  • This can be achieved particularly advantageously if the support structure has at least two support rings arranged at a distance from each other.
  • the circumferential direction advantageously extends transversely to a longitudinal extent, in particular a length, of the auxiliary handle.
  • the damping unit has at least one limiting element which limits the receiving area for the damping means in at least one direction.
  • a further shaping of the damping pad in at least one direction, preferably in an axial direction, can advantageously be achieved.
  • the auxiliary handle device has at least one support element which extends along an axial direction through the receiving area, whereby a rigidity of the auxiliary handle can be achieved structurally simple.
  • An "axial direction” is to be understood here in particular as meaning a direction along a longitudinal extension of the auxiliary handle device.
  • the damping cushion is arranged in a radial direction about the support element, whereby a direct vibration transmission during operation of the power tool from the support member to a handle portion of the auxiliary handle at least reduced and / or can be prevented.
  • the receiving area is adjustable by the limiting element and the support element, it is thus advantageously possible to set a damping parameter of the damping unit, in particular a pretension of the damping means, in particular of the damping cushion.
  • the auxiliary handle has at least one grip end region on which the support element is arranged to be adjustable, as a result of which a damping parameter, in particular a pretension, of the damping cushion can be set.
  • a marking area should be understood to mean in particular a region of the supporting element which has at least one preferably optical marking which is provided for transmitting information to an operator.
  • the support structure and / or the damping means on a viewing window whereby in particular in the region of a mark, an advantageous optical information transmission to the operator of the auxiliary handle device can be achieved.
  • FIG. 1 is a trained by an angle grinder hand tool 12a in a view from above.
  • the angle grinder comprises a housing 56a and a main handle 54a integrated in the housing 56a.
  • the main handle 54a extends on a side facing away from a tool 58a formed by a cutting tool 60a in the direction of a longitudinal direction 62a of the angle grinding machine.
  • An auxiliary handle device 10a which extends transversely to the longitudinal direction 62a of the angle grinding machine, is arranged on a front, tool-near region 64a of the angle grinder.
  • the auxiliary handle device 10a is shown with an auxiliary handle 14a and a damping unit 16a.
  • the damping unit 16a has a damping means 18a which is formed by a damping pad formed by a gel pad 20a.
  • the gel pad 20a comprises an elastic sheath 100a and a filler 102a formed by a gel.
  • the auxiliary handle device 10a or the additional handle 14a has a grip region 22a with a support structure 24a.
  • the support structure 24a surrounds a receiving region 26a for the gel pad 20a, wherein the receiving region 26a extends inwardly from the support structure 24a in a radial direction 46a.
  • the support structure 24a has a plurality of support structure elements 28a.
  • the support structure elements 28a are each formed by a support ring 30a, 32a, directly adjacent to each other support rings 30a, 32a are arranged with a distance 68a to each other, which is greater than a ring thickness 70a of the support rings 30a, 32a and particularly advantageously greater than a double ring thickness 70a of the support rings 30a, 32a.
  • the grip portion 22a of the auxiliary handle 14a is formed by the support rings 30a, 32a and the intervening portions 72a of the gel pad 20a, so that an operator's hand can rest directly on the portions 72a of the gel pad 20a and on the elastic sleeve 100a, respectively.
  • the receiving region 26a for the gel pad 20a is in the axial directions 40a, 42a by a respective limiting element 36a, 38a of the auxiliary handle 14a and the damping unit 18a borders, wherein the axial directions 40a, 42a are aligned parallel to a main extension direction 74a.
  • the limiting elements 36a, 38a are each formed by a Griffend Scheme 48a, 76a.
  • the auxiliary handle device 10a has a support element 44a, which is formed integrally with a fastening unit 78a.
  • the supporting element 44a extends along the axial direction 42a from the fastening unit 78a through the grip end region 76a facing the fastening unit 78a, through the receiving region 26a and through the grip end region 48a facing away from the fastening unit 78a.
  • the support member 44a is arranged in the radial direction 46a in a central region of the auxiliary handle 14a and formed bolt-shaped.
  • the gel cushion 20a is arranged between the support element 44a and the support structure 24a or the support rings 30a, 32a.
  • the support element 44a For setting a damping parameter and / or a damping property of the gel pad 20a, the support element 44a has a thread in an end region 80a facing away from the fastening unit 78a, which can be screwed to a mating thread of the grip end region 48a facing away from the fastening unit 78a.
  • a volume of the receiving portion 26a for receiving the gel pad 20a is adjusted, thereby adjusting a damping parameter and / or damping characteristic of the gel pad 20a.
  • the fastening unit 78a has, in addition to a bolt-shaped fastening element 82a, which is provided for fastening the auxiliary handle device 10a to the handheld power tool 12a, a disk-shaped base element 84a.
  • the disc-shaped base element 84a is arranged for this purpose in the axial direction 40a, which extends from one of the grip end regions 48a, 76a in a direction of the fastening unit 78a, to the grip end region 76a facing the fastening unit 78a.
  • the support element 44a has a marking region 50a which is arranged in a middle subregion 86a of the support element 44a along the axial direction 40a, 42a.
  • the marking area 50a comprises a plurality of groove-like markings 88a, which are arranged around the supporting element 44a in the circumferential direction 66a.
  • the gel pad 20a has, in a region of the marking area 50a of the support element 44a, a viewing window 52a which is formed by a recess.
  • the recess extends inward in the radial direction 46a from the grip portion 22a to the support member 44a.
  • the Individual markings 88a visible in the viewing window 52a are assigned a defined damping characteristic or a damping parameter of the gel pad 20a, so that the set damping characteristic or the set damping parameter of the gel pad 20a can be displayed for an operator.
  • vibrations and / or vibrations are generated, which are transmitted via the fixing unit 78a on the Rajhandgriffirorcardi 10a.
  • the vibrations and / or vibrations are transmitted to the support member 44a and forwarded by the latter to the damping unit 16a or to the gel pad 20a.
  • vibration energy of the transmitted vibrations and / or vibrations is absorbed, so that the grip portion 22a of the auxiliary handle 14a is substantially vibration decoupled in operation of the hand tool 12a.
  • FIG. 3 an embodiment is shown.
  • FIG. 4 another example is presented to facilitate understanding.
  • Substantially identical components, features and functions are basically numbered by the same reference numerals. However, to distinguish the embodiment and the examples, the letters a to c are added to the reference numerals of the embodiment and examples. The following description is essentially limited to the differences from the example in FIGS FIGS. 1 and 2 , wherein with respect to the same components, features and functions on the description of the example in the FIGS. 1 and 2 can be referenced.
  • FIG. 3 an alternative auxiliary handle device 10b is shown.
  • the auxiliary handle device 10b has an auxiliary handle 14b, a damping unit 16b comprising a cushion pad formed by a gel pad 20b, and a grip portion 22b having a support structure 24b.
  • the support structure 24b comprises a support structure element 28b which is formed by a thread-like support spring 34b.
  • a distance from individual, in an axial direction 40b, 42b directly adjacent to each other thread revolutions 92b is smaller than a material thickness 90b of a thread turn 92b.
  • the auxiliary handle device 10b has a support element 44b, which is formed integrally with the fastening unit 78b, wherein a disk-shaped base element 84b of the fastening unit 78b is arranged within a grip end region 76b facing the fastening unit 78b.
  • a damping principle or a setting of a vibration damping is analogous to the comments on FIG. 2 ,
  • the auxiliary handle device 10c has an auxiliary handle 14c, a damping unit 16c, which comprises a cushion pad formed by a gel pad 20c, and a grip portion 22c with a support structure 24c.
  • the support structure 24c is formed by a grip sleeve 94c formed integrally with grip end portions 48c, 76c of the auxiliary handle 14c.
  • the gel cushion 20c is arranged, whereby an limitation in the axial direction 40c, 42c of the receiving region 26c for the gel cushion 20c is effected by two delimiting elements 36c, 38c formed by a respective rubber cone.
  • the limiting elements 36c, 38c are arranged in the circumferential direction 66c around a support element 44c.
  • the support element 44c or a fastening unit 78c are arranged spaced apart from the grip end region 76c facing the fastening unit 78c in the radial direction 46c so that a direct vibration transmission from the fastening unit 78c via the support element 44c and the grip end region 76c to the grip region 22c or on the grip sleeve 94c is prevented.
  • the receiving region 26c or a damping parameter and / or a damping property of the gel pad 20c can be set.
  • the limiting element 38c facing away from the fastening unit 78c has a thread which can be screwed to a mating thread of the support element 44c.
  • the support member 44c is designed telescopic extension.
  • a telescopic extension element 96c facing away from the fastening unit 78c is rotatably arranged relative to further telescopic extension elements 98c arranged closer to the fastening unit 78c, wherein the limiting element 36c facing the fastening unit 78c is arranged on one of the further telescopic extension elements 98c.
  • the delimiting element 38c is displaced by means of the thread in the axial direction 40c, 42c, thereby enlarging or reducing, depending on the direction of rotation, the receiving region 26c of the gel pad 20c or changing a damping parameter of the gel pad 20c ,

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Vibration Prevention Devices (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)
  • Sawing (AREA)

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einer Zusatzhandgriffvorrichtung nach dem Oberbegriff des Anspruchs 1.The invention is based on an auxiliary handle device according to the preamble of claim 1.

Es ist bereits eine Zusatzhandgriffvorrichtung für eine Handwerkzeugmaschine mit einem Zusatzhandgriff und einer Dämpfungseinheit bekannt. Die Dämpfungseinheit weist zu einer Schwingungsdämpfung ein Dämpfungsmittel auf.There is already known an auxiliary handle device for a hand tool with an auxiliary handle and a damping unit. The damping unit has a damping means to a vibration damping.

Vorteile der ErfindungAdvantages of the invention

Die Erfindung geht aus von einer Zusatzhandgriffvorrichtung, insbesondere für eine Handwerkzeugmaschine, mit einem Zusatzhandgriff und einer Dämpfungseinheit, die zumindest ein Dämpfungsmittel umfasst, wobei das Dämpfungsmittel zumindest teilweise von einem Dämpfungskissen gebildet ist, wobei der Zusatzhandgriff einen Griffbereich mit zumindest einer Stützstruktur aufweist, die zumindest teilweise einen Aufnahmebereich für das Dämpfungsmittel umgibt und wobei die Stützstruktur zumindest ein Stützstrukturelement aufweist.The invention relates to an auxiliary handle device, in particular for a hand tool, with an auxiliary handle and a damping unit comprising at least one damping means, wherein the damping means is at least partially formed by a damping cushion, wherein the auxiliary handle has a handle portion with at least one support structure, at least partially surrounds a receiving area for the damping means and wherein the support structure comprises at least one support structure element.

Es wird vorgeschlagen, dass das Stützstrukturelement zumindest teilweise von einer Stützfeder gebildet ist. In diesem Zusammenhang soll unter einem "Zusatzhandgriff" ein Bereich und/oder ein Bauteil und/oder ein Element verstanden werden, der bzw. das zu einem Anlegen, insbesondere einem Umgreifen, durch eine Hand oder mehrere Hände eines Bedieners, zwecks einer Führung einer Handwerkzeugmaschine mittels der Zusatzhandgriffvorrichtung, vorgesehen ist und insbesondere neben einem weiteren Handgriff, insbesondere dem Haupthandgriff, zusätzlich an der Handwerkzeugmaschine anbringbar ist, wobei die Zusatzhandgriffvorrichtung seitlich an der Handwerkzeugmaschine angeordnet ist und/oder werkzeuglos von einem Bediener an der Hand-werkzeugmaschine montiert bzw. demontiert werden kann und/oder in einem vorderen, werkzeugnahen Bereich der Handwerkzeugmaschine angeordnet ist und/oder der Zusatzhandgriff stabförmig ausgebildet ist. Des Weiteren soll unter einem "Dämpfungskissen" insbesondere eine Struktur des Dämpfungsmittels verstanden werden, die eine äußere Hülle aufweist, die ein Volumen umgibt, das vorzugsweise von einem Füllstoff gefüllt ist, der in Kombination mit der Hülle und/oder für sich schwingungsdämpfende Eigenschaften aufweist. Besonders vorteilhaft ist der Füllstoff von einem Fluid, wie beispielsweise von einem Gas, einer Flüssigkeit und/oder besonders vorteilhaft von einem Gel usw. gebildet und/oder von weiteren dem Fachmann als sinnvoll erscheinenden Füllstoffen. Vorteilhafterweise ist die Hülle des Dämpfungskissens von einem anderen, vorzugsweise elastischen Material gebildet als der Füllstoff. Grundsätzlich ist es auch denkbar, bei einem Füllstoff mit vorzugsweise geringen Fließeigenschaften, dass das Dämpfungskissen nur von dem Füllstoff gebildet ist. Ferner soll in diesem Zusammenhang unter einer "Stützstruktur" insbesondere eine Struktur verstanden werden, die zumindest eine Stützfunktion aufweist und/oder die insbesondere gerüstartig um ein Element und/oder Bauteil, vorzugsweise zu einer Formgebung des Elements und/oder Bauteils, insbesondere des Dämpfungskissens, angeordnet ist. Des Weiteren soll unter einer "Stützfeder" insbesondere eine gewindeartige Schraubenfeder verstanden werden, die in Umfangsrichtung stützend um das Dämpfungskissen angeordnet ist. Durch die erfindungsgemäße Ausgestaltung kann eine vorteilhafte Dämpfung des Zusatzhandgriffs, insbesondere eines Griffbereichs, und damit ein hoher Bedienkomfort für einen Bediener erreicht werden. Es kann eine für den Zusatzhandgriff vorteilhafte Formgebung des Dämpfungskissens, als auch eine vorteilhafte Steifigkeit des Griffbereichs erzielt werden, wobei der Griffbereich vorzugsweise zu einem Anlegen einer Hand des Bedieners vorgesehen ist. Zudem kann sowohl eine vorteilhafte Formgebung des Dämpfungskissens in Umfangsrichtung als auch eine vorzugsweise elastische, insbesondere federelastische Ausrichtung in eine axiale und/oder eine radiale Richtung erreicht werden. Die erfindungsgemäße Zusatzhandgriffvorrichtung ist grundsätzlich in Verbindung mit allen, dem Fachmann als sinnvoll erscheinenden Handwerkzeugmaschinen einsetzbar, bei denen insbesondere eine Führung von Handwerkzeugmaschinen mittels des Zusatzhandgriffs für einen Bediener erleichtert wird. Aufgrund ihrer Dämpfungseigen schaft ist die Zusatzhandgriffvorrichtung in Verbindung mit einer Winkelschleifmaschine besonders vorteilhaft.It is proposed that the support structure element is at least partially formed by a support spring. In this context, an "additional handle" is to be understood as an area and / or a component and / or an element which constitutes an application, in particular a gripping, by a hand or several hands of an operator, for the purpose of guiding a handheld power tool by means of the auxiliary handle device, is provided and in particular, in addition to another handle, in particular the main handle, in addition to the hand tool machine is attachable, wherein the auxiliary handle device is arranged laterally on the hand tool and / or without tools by an operator on the hand-tool can be assembled or disassembled and / or arranged in a front, near the tool area of the power tool and / or the auxiliary handle is rod-shaped. Furthermore, a "cushioning pad" should be understood to mean, in particular, a structure of the damping means which has an outer shell which surrounds a volume which is preferably filled by a filler which has a combination with the shell and / or vibration damping properties. The filler is particularly advantageously formed by a fluid, such as, for example, a gas, a liquid and / or particularly advantageously by a gel, etc., and / or by further fillers which appear expedient to the person skilled in the art. Advantageously, the sheath of the damping pad is formed by another, preferably elastic material than the filler. In principle, it is also conceivable for a filler with preferably low flow properties that the damping pad is formed only by the filler. Furthermore, in this context, a "support structure" should be understood to mean, in particular, a structure which has at least one support function and / or which in particular is a frame-like arrangement around an element and / or component, preferably a shaping of the element and / or component, in particular the damping cushion, is arranged. Furthermore, a "supporting spring" is to be understood in particular to mean a thread-like helical spring which is arranged supportingly around the damping cushion in the circumferential direction. The embodiment according to the invention makes it possible to achieve an advantageous damping of the auxiliary handle, in particular of a grip area, and thus a high level of operating comfort for an operator. It can be achieved advantageous for the additional handle shaping of the damping cushion, as well as an advantageous rigidity of the grip area, wherein the grip area is preferably provided for applying a hand of the operator. In addition, both an advantageous shaping of the damping cushion in the circumferential direction and a preferably elastic, in particular resilient alignment in an axial and / or a radial direction can be achieved. The auxiliary handle device according to the invention is basically used in conjunction with all hand tool machines that appear useful to the person skilled in the art, in which, in particular, guidance of hand tool machines by means of the additional handle is made easier for an operator. Due to their damping properties Shaft is the additional handle device in conjunction with an angle grinder particularly advantageous.

Weiterhin wird vorgeschlagen, dass das Dämpfungsmittel von einem Gelkissen gebildet ist, wodurch eine flexible, insbesondere räumliche, Anpassung des Dämpfungsmittels erreicht werden kann. Zudem ist mittels des Gelkissens eine vorteilhafte Schwingungsdämpfung erreichbar.Furthermore, it is proposed that the damping means is formed by a gel pad, whereby a flexible, in particular spatial, adaptation of the damping means can be achieved. In addition, an advantageous vibration damping can be achieved by means of the gel pad.

Weist die Stützstruktur zumindest ein Stützstrukturelement auf, das vorzugsweise zumindest teilweise von einem Stützring gebildet ist, kann eine vorteilhafte Formgebung des Dämpfungskissens in eine Umfangsrichtung des Zusatzhandgriffs erzielt werden. Besonders vorteilhaft kann dies erreicht werden, wenn die Stützstruktur zumindest zwei zueinander beabstandet angeordnete Stützringe aufweist. Die Umfangsrichtung erstreckt sich vorteilhafterweise quer zu einer Längserstreckung, insbesondere einer Länge, des Zusatzhandgriffs.If the support structure has at least one support structure element, which is preferably at least partially formed by a support ring, an advantageous shaping of the damping cushion in a circumferential direction of the auxiliary handle can be achieved. This can be achieved particularly advantageously if the support structure has at least two support rings arranged at a distance from each other. The circumferential direction advantageously extends transversely to a longitudinal extent, in particular a length, of the auxiliary handle.

In einer weiteren Ausgestaltung der Erfindung wird vorgeschlagen, dass die Dämpfungseinheit zumindest ein Begrenzungselement aufweist, das den Aufnahmebereich für das Dämpfungsmittel in zumindest eine Richtung begrenzt. Hierdurch kann vorteilhaft eine weitere Formgebung des Dämpfungskissens in zumindest eine Richtung, vorzugsweise in eine axiale Richtung, erzielt werden.In a further embodiment of the invention it is proposed that the damping unit has at least one limiting element which limits the receiving area for the damping means in at least one direction. As a result, a further shaping of the damping pad in at least one direction, preferably in an axial direction, can advantageously be achieved.

Ferner wird vorgeschlagen, dass die Zusatzhandgriffvorrichtung zumindest ein Stützelement aufweist, das sich entlang einer axialen Richtung durch den Aufnahmebereich erstreckt, wodurch eine Steifigkeit des Zusatzhandgriffs konstruktiv einfach erreicht werden kann. Unter einer "axialen Richtung" soll hierbei insbesondere eine Richtung entlang einer Längserstreckung der Zusatzhandgriffvorrichtung verstanden werden.It is also proposed that the auxiliary handle device has at least one support element which extends along an axial direction through the receiving area, whereby a rigidity of the auxiliary handle can be achieved structurally simple. An "axial direction" is to be understood here in particular as meaning a direction along a longitudinal extension of the auxiliary handle device.

Weiterhin wird vorgeschlagen, dass das Dämpfungskissen in eine radiale Richtung um das Stützelement angeordnet ist, wodurch eine direkte Schwingungsübertragung im Betrieb der Handwerkzeugmaschine von dem Stützelement auf einen Griffbereich des Zusatzhandgriffs zumindest reduziert und/oder verhindert werden kann.Furthermore, it is proposed that the damping cushion is arranged in a radial direction about the support element, whereby a direct vibration transmission during operation of the power tool from the support member to a handle portion of the auxiliary handle at least reduced and / or can be prevented.

Ist zudem der Aufnahmebereich durch das Begrenzungselement und das Stützelement einstellbar, kann damit vorteilhafterweise ein Dämpfungsparameter der Dämpfungseinheit, insbesondere eine Vorspannung des Dämpfungsmittels, insbesondere des Dämpfungskissens, eingestellt werden.In addition, if the receiving area is adjustable by the limiting element and the support element, it is thus advantageously possible to set a damping parameter of the damping unit, in particular a pretension of the damping means, in particular of the damping cushion.

In einer vorteilhaften Weiterbildung der Erfindung wird vorgeschlagen, dass der Zusatzhandgriff zumindest einen Griffendbereich aufweist, an dem das Stützelement einstellbar angeordnet ist, wodurch ein Dämpfungsparameter, insbesondere eine Vorspannung, des Dämpfungskissens eingestellt werden kann.In an advantageous development of the invention, it is proposed that the auxiliary handle has at least one grip end region on which the support element is arranged to be adjustable, as a result of which a damping parameter, in particular a pretension, of the damping cushion can be set.

Weist zudem das Stützelement einen Markierungsbereich auf, kann vorteilhaft eine Einstellung, wie beispielsweise eine eingestellte Vorspannung des Dämpfungskissens, für einen Bediener vorteilhaft angezeigt werden. In diesem Zusammenhang soll unter einem "Markierungsbereich" insbesondere ein Bereich des Stützelements verstanden werden, der zumindest eine vorzugsweise optische Markierung aufweist, die zu einer Informationsübermittlung an einen Bediener vorgesehen ist.In addition, if the support element has a marking area, an adjustment, for example a set pretension of the damping cushion, can advantageously be displayed to an operator. In this context, a "marking area" should be understood to mean in particular a region of the supporting element which has at least one preferably optical marking which is provided for transmitting information to an operator.

Vorteilhafterweise weist die Stützstruktur und/oder das Dämpfungsmittel ein Sichtfenster auf, wodurch insbesondere im Bereich einer Markierung eine vorteilhafte optische Infonnationsübermittlung an den Bediener der Zusatzhandgriffvorrichtung erreicht werden kann.Advantageously, the support structure and / or the damping means on a viewing window, whereby in particular in the region of a mark, an advantageous optical information transmission to the operator of the auxiliary handle device can be achieved.

Zeichnungdrawing

Weitere Vorteile ergeben sich aus der folgenden Zeichnungsbeschreibung. In der Zeichnung ist ein Ausfiihrungsbeispiel der Erfindung dargestellt. Die Zeichnung, die Beschreibung und die Ansprüche enthalten zahlreiche Merkmale in Kombination. Der Fachmann wird die Merkmale zweckmä-βigerweise auch einzeln betrachten und zu sinnvollen weiteren Kombinationen zusammenfassen. Die in den Figuren 2 und 4 dargestellten Zeichnungen sowie die dazugehörende Zeichnungsbeschreibung stellen lediglich Beispiele, die ein Verständnis der Erfindung erleichtern sollen, und somit keine weiteren Ausführungsformen der Erfindung dar.Further advantages emerge from the following description of the drawing. In the drawing an embodiment of the invention is shown. The drawing, the description and the claims contain numerous features in combination. The person skilled in the art expediently also individually consider the features and combine them into meaningful further combinations. The in the Figures 2 and 4 Illustrated drawings and the accompanying drawings description provide only examples that are intended to facilitate an understanding of the invention, and thus no further embodiments of the invention.

Es zeigen:

Fig. 1
eine Handwerkzeugmaschine mit einer erfindungsgemäßen Zusatzhandgriffvonrichtung in einer schematischen Darstellung,
Fig. 2
die Zusatzhandgriffvorrichtung mit einer Dämpfungseinheit und einer Stützstruktur mit mehreren Stützringen in einer perspektivischen Schnittdarstellung,
Fig. 3
die Zusatzhandgriffvorrichtung mit einer Dämpfungseinheit und einer alternativen Stützstruktur mit einer Stützfeder in einer perspektivischen Schnittdarstellung und
Fig. 4
die Zusatzhandgriffvorrichtung mit einer alternativen Dämpfungseinheit in einer perspektivischen Schnittdarstellung.
Show it:
Fig. 1
a hand tool with a Zusatzhandgriffvonrichtung invention in a schematic representation,
Fig. 2
the auxiliary handle device with a damping unit and a support structure with a plurality of support rings in a perspective sectional view,
Fig. 3
the additional handle device with a damping unit and an alternative support structure with a support spring in a perspective sectional view and
Fig. 4
the additional handle device with an alternative damping unit in a perspective sectional view.

Beschreibung des AusführungsbeispielsDescription of the embodiment

In Figur 1 ist eine von einer Winkelschleifmaschine ausgebildete Handwerkzeugmaschine 12a in einer Ansicht von oben dargestellt. Die Winkelschleifmaschine umfasst ein Gehäuse 56a und einen im Gehäuse 56a integrierten Haupthandgriff 54a. Der Haupthandgriff 54a erstreckt sich an einer einem von einer Trennscheibe gebildeten Werkzeug 58a abgewandten Seite 60a in Richtung einer Längsrichtung 62a der Winkelschleifinaschine. An einem vorderen, werkzeugnahen Bereich 64a der Winkelschleifmaschine ist eine Zusatzhandgriffvorrichtung 10a angeordnet, die sich quer zur Längsrichtung 62a der Winkelschleifinaschine erstreckt.In FIG. 1 is a trained by an angle grinder hand tool 12a in a view from above. The angle grinder comprises a housing 56a and a main handle 54a integrated in the housing 56a. The main handle 54a extends on a side facing away from a tool 58a formed by a cutting tool 60a in the direction of a longitudinal direction 62a of the angle grinding machine. An auxiliary handle device 10a, which extends transversely to the longitudinal direction 62a of the angle grinding machine, is arranged on a front, tool-near region 64a of the angle grinder.

In Figur 2 ist die Zusatzhandgriffvorrichtung 10a mit einem Zusatzhandgriff 14a und einer Dämpfungseinheit 16a dargestellt. Die Dämpfungseinheit 16a weist ein Dämpfungsmittel 18a auf, das von einem von einem Gelkissen 20a gebildeten Dämpfungskissen gebildet ist. Das Gelkissen 20a umfasst eine elastische Hülle 100a und einen von einem Gel gebildeten Füllstoff 102a. Des Weiteren weist die Zusatzhandgriffvorrichtung 10a bzw. der Zusatzhandgriff 14a einen Griffbereich 22a mit einer Stützstruktur 24a auf. Die Stützstruktur 24a umgibt einen Aufnahmebereich 26a für das Gelkissen 20a, wobei sich der Aufnahmebereich 26a von der Stützstruktur 24a aus in eine radiale Richtung 46a nach innen erstreckt. Zu einer Formgebung des Gelkissens 20a in radialer Richtung 46a nach außen und in eine Umfangsrichtung 66a des Zusatzhandgriffs 14a weist die Stützstruktur 24a eine Mehrzahl von Stützstrukturelementen 28a auf. Die Stützstrukturelemente 28a sind jeweils von einem Stützring 30a, 32a gebildet, wobei direkt zueinander benachbarte Stützringe 30a, 32a mit einem Abstand 68a zueinander angeordnet sind, der größer ist als eine Ringdicke 70a der Stützringe 30a, 32a und besonders vorteilhaft größer ist als eine doppelte Ringdicke 70a der Stützringe 30a, 32a. Der Griffbereich 22a des Zusatzhandgriffs 14a ist von den Stützringen 30a, 32a und den dazwischen hervortretenden Bereichen 72a des Gelkissens 20a gebildet, so dass eine Hand eines Bedieners direkt auf den Bereichen 72a des Gelkissens 20a bzw. auf der elastischen Hülle 100a aufliegen kann.In FIG. 2 the auxiliary handle device 10a is shown with an auxiliary handle 14a and a damping unit 16a. The damping unit 16a has a damping means 18a which is formed by a damping pad formed by a gel pad 20a. The gel pad 20a comprises an elastic sheath 100a and a filler 102a formed by a gel. Furthermore, the auxiliary handle device 10a or the additional handle 14a has a grip region 22a with a support structure 24a. The support structure 24a surrounds a receiving region 26a for the gel pad 20a, wherein the receiving region 26a extends inwardly from the support structure 24a in a radial direction 46a. For a shaping of the gel pad 20a in the radial direction 46a outward and in a circumferential direction 66a of the auxiliary handle 14a, the support structure 24a has a plurality of support structure elements 28a. The support structure elements 28a are each formed by a support ring 30a, 32a, directly adjacent to each other support rings 30a, 32a are arranged with a distance 68a to each other, which is greater than a ring thickness 70a of the support rings 30a, 32a and particularly advantageously greater than a double ring thickness 70a of the support rings 30a, 32a. The grip portion 22a of the auxiliary handle 14a is formed by the support rings 30a, 32a and the intervening portions 72a of the gel pad 20a, so that an operator's hand can rest directly on the portions 72a of the gel pad 20a and on the elastic sleeve 100a, respectively.

Der Aufnahmebereich 26a für das Gelkissen 20a ist in axialen Richtungen 40a, 42a durch jeweils ein Begrenzungselement 36a, 38a des Zusatzhandgriffs 14a bzw. der Dämpfungseinheit 18a grenzt, wobei die axialen Richtungen 40a, 42a parallel zu einer Haupterstreckungsrichtung 74a ausgerichtet sind. Die Begrenzungselemente 36a, 38a sind dabei jeweils von einem Griffendbereich 48a, 76a gebildet. Weiterhin weist die Zusatzhandgriffvorrichtung 10a ein Stützelement 44a auf, das einstückig mit einer Befestigungseinheit 78a ausgebildet ist. Das Stützelement 44a erstreckt sich entlang der axialen Richtung 42a von der Befestigungseinheit 78a durch den der Befestigungseinheit 78a zugewandten Griffendbereich 76a, durch den Aufnahmebereich 26a und durch den der Befestigungseinheit 78a abgewandten Griffendbereich 48a. Zudem ist das Stützelement 44a in radialer Richtung 46a in einem mittleren Bereich des Zusatzhandgriffs 14a angeordnet und bolzenförmig ausgebildet. In radialer Richtung 46a um das Stützelement 44a ist das Gelkissen 20a zwischen dem Stützelement 44a und der Stützstruktur 24a bzw. den Stützringen 30a, 32a angeordnet.The receiving region 26a for the gel pad 20a is in the axial directions 40a, 42a by a respective limiting element 36a, 38a of the auxiliary handle 14a and the damping unit 18a borders, wherein the axial directions 40a, 42a are aligned parallel to a main extension direction 74a. The limiting elements 36a, 38a are each formed by a Griffendbereich 48a, 76a. Furthermore, the auxiliary handle device 10a has a support element 44a, which is formed integrally with a fastening unit 78a. The supporting element 44a extends along the axial direction 42a from the fastening unit 78a through the grip end region 76a facing the fastening unit 78a, through the receiving region 26a and through the grip end region 48a facing away from the fastening unit 78a. In addition, the support member 44a is arranged in the radial direction 46a in a central region of the auxiliary handle 14a and formed bolt-shaped. In the radial direction 46a around the support element 44a, the gel cushion 20a is arranged between the support element 44a and the support structure 24a or the support rings 30a, 32a.

Zu einer Einstellung eines Dämpfungsparameters und/oder einer Dämpfungseigenschaft des Gelkissens 20a weist das Stützelement 44a in einem der Befestigungseinheit 78a abgewandten Endbereich 80a ein Gewinde auf, das mit einem Gegengewinde des der Befestigungseinheit 78a abgewandten Griffendbereichs 48a verschraubbar ist. Mittels eines Drehens des Griffendbereichs 48a relativ zu dem Stützelement 44a durch einen Bediener der Zusatzhandgriffvorrichtung 10a wird ein Volumen des Aufnahmebereichs 26a zur Aufnahme des Gelkissens 20a eingestellt bzw. variiert und damit ein Dämpfungsparameter und/oder eine Dämpfungseigenschaft des Gelkissens 20a eingestellt. Zu einer Abstützung des Stützelements 44a an dem der Befestigungseinheit 78a zugewandten Griffendbereich 76a weist die Befestigungseinheit 78a neben einem bolzenförmigen Befestigungselement 82a, das zu einer Befestigung der Zusatzhandgriffvorrichtung 10a mit der Handwerkzeugmaschine 12a vorgesehen ist, ein scheibenförmiges Grundelement 84a auf. Das scheibenförmige Grundelement 84a ist hierzu in axialer Richtung 40a, die sich von einem der Griffendbereiche 48a, 76a in eine Richtung der Befestigungseinheit 78a erstreckt, nach dem der Befestigungseinheit 78a zugewandten Griffendbereich 76a angeordnet.For setting a damping parameter and / or a damping property of the gel pad 20a, the support element 44a has a thread in an end region 80a facing away from the fastening unit 78a, which can be screwed to a mating thread of the grip end region 48a facing away from the fastening unit 78a. By rotating the grip end portion 48a relative to the support member 44a by an operator of the auxiliary handle device 10a, a volume of the receiving portion 26a for receiving the gel pad 20a is adjusted, thereby adjusting a damping parameter and / or damping characteristic of the gel pad 20a. In order to support the support element 44a on the grip end region 76a facing the fastening unit 78a, the fastening unit 78a has, in addition to a bolt-shaped fastening element 82a, which is provided for fastening the auxiliary handle device 10a to the handheld power tool 12a, a disk-shaped base element 84a. The disc-shaped base element 84a is arranged for this purpose in the axial direction 40a, which extends from one of the grip end regions 48a, 76a in a direction of the fastening unit 78a, to the grip end region 76a facing the fastening unit 78a.

Um dem Bediener der Zusatzhandgriffvorrichtung 10a einen eingestellten Dämpfungsparameter anzuzeigen, weist das Stützelement 44a einen Markierungsbereich 50a auf, der in einem mittleren Teilbereich 86a des Stützelements 44a entlang der axialen Richtung 40a, 42a angeordnet ist. Der Markierungsbereich 50a umfasst mehrere rillenartige Markierungen 88a, die in Umfangsrichtung 66a um das Stützelement 44a angeordnet sind. Zu einem Ablesen bzw. Anzeigen der Markierungen 88a weist das Gelkissen 20a in einem Bereich des Markierungsbereichs 50a des Stützelements 44a ein Sichtfenster 52a auf, das von einer Ausnehmung gebildet ist. Die Ausnehmung erstreckt sich in der radialen Richtung 46a von dem Griffbereich 22a bis zu dem Stützelement 44a nach innen. Den einzelnen, im Sichtfenster 52a sichtbaren Markierungen 88a ist dabei eine definierte Dämpfungseigenschaft bzw. ein Dämpfungsparameter des Gelkissens 20a zugeordnet, so dass für einen Bediener die eingestellte Dämpfungseigenschaft bzw. der eingestellte Dämpfungsparameter des Gelkissens 20a angezeigt werden kann.In order to indicate to the operator of the auxiliary handle device 10a a set damping parameter, the support element 44a has a marking region 50a which is arranged in a middle subregion 86a of the support element 44a along the axial direction 40a, 42a. The marking area 50a comprises a plurality of groove-like markings 88a, which are arranged around the supporting element 44a in the circumferential direction 66a. For reading or displaying the markings 88a, the gel pad 20a has, in a region of the marking area 50a of the support element 44a, a viewing window 52a which is formed by a recess. The recess extends inward in the radial direction 46a from the grip portion 22a to the support member 44a. The Individual markings 88a visible in the viewing window 52a are assigned a defined damping characteristic or a damping parameter of the gel pad 20a, so that the set damping characteristic or the set damping parameter of the gel pad 20a can be displayed for an operator.

Im Betrieb der Handwerkzeugmaschine 12a werden Schwingungen und/oder Vibrationen erzeugt, die über die Befestigungseinheit 78a auf die Zusatzhandgriffirorrichtung 10a übertragen werden. Von der Befestigungseinheit 78a werden die Schwingungen und/oder Vibrationen auf das Stützelement 44a übertragen und von diesem auf die Dämpfungseinheit 16a bzw. auf das Gelkissen 20a weitergeleitet. Innerhalb des Gelkissens 20a wird eine Schwingungsenergie der übertragenen Schwingungen und/oder Vibrationen absorbiert, so dass der Griffbereich 22a des Zusatzhandgriffs 14a im Wesentlichen schwingungsentkoppelt im Betrieb der Handwerkzeugmaschine 12a ist.During operation of the power tool 12a vibrations and / or vibrations are generated, which are transmitted via the fixing unit 78a on the Zusatzhandgriffirorrichtung 10a. From the fixing unit 78a, the vibrations and / or vibrations are transmitted to the support member 44a and forwarded by the latter to the damping unit 16a or to the gel pad 20a. Within the gel pad 20a, vibration energy of the transmitted vibrations and / or vibrations is absorbed, so that the grip portion 22a of the auxiliary handle 14a is substantially vibration decoupled in operation of the hand tool 12a.

In Figur 3 ist ein Ausführungsbeispiel dargestellt. In Figur 4 ist ein weiteres Beispiel dargestellt, um das Verständnis zu erleichtern. Im Wesentlichen gleich bleibende Bauteile, Merkmale und Funktionen sind grundsätzlich mit den gleichen Bezugszeichen beziffert. Zur Unterscheidung des Ausführungsbeispiels und der Beispiele sind jedoch den Bezugszeichen des Ausführungsbeispiels und der Beispiele die Buchstaben a bis c hinzugefügt. Die nachfolgende Beschreibung beschränkt sich im Wesentlichen auf die Unterschiede zu dem Beispiel in den Figuren 1 und 2, wobei bezüglich gleich bleibender Bauteile, Merkmale und Funktionen auf die Beschreibung des Beispiels in den Figuren 1 und 2 verwiesen werden kann.In FIG. 3 an embodiment is shown. In FIG. 4 another example is presented to facilitate understanding. Substantially identical components, features and functions are basically numbered by the same reference numerals. However, to distinguish the embodiment and the examples, the letters a to c are added to the reference numerals of the embodiment and examples. The following description is essentially limited to the differences from the example in FIGS FIGS. 1 and 2 , wherein with respect to the same components, features and functions on the description of the example in the FIGS. 1 and 2 can be referenced.

In Figur 3 ist eine alternative Zusatzhandgriffvorrichtung 10b dargestellt. Die Zusatzhandgriffvorrichtung 10b weist einen Zusatzhandgriff 14b, eine Dämpfungseinheit 16b, die ein von einem Gelkissen 20b gebildetes Dämpfungskissen umfasst, und eine Griffbereich 22b mit einer Stützstruktur 24b auf. Die Stützstruktur 24b umfasst ein Stützstrukturelement 28b, das von einer gewindeartigen Stützfeder 34b gebildet ist. Ein Abstand von einzelnen, in eine axiale Richtung 40b, 42b direkt zueinander benachbarten Gewindeumdrehungen 92b ist dabei kleiner als eine Materialdicke 90b einer Gewindeumdrehung 92b. Zudem weist die Zusatzhandgriffvorrichtung 10b ein Stützelement 44b auf, das einstückig mit der Befestigungseinheit 78b ausgebildet ist, wobei ein scheibenförmiges Grundelement 84b der Befestigungseinheit 78b innerhalb eines der Befestigungseinheit 78b zugewandten Griffendbereichs 76b angeordnet ist. Ein Dämpfungsprinzip bzw. eine Einstellung einer Schwingungsdämpfung erfolgt analog den Ausführungen zu Figur 2.In FIG. 3 an alternative auxiliary handle device 10b is shown. The auxiliary handle device 10b has an auxiliary handle 14b, a damping unit 16b comprising a cushion pad formed by a gel pad 20b, and a grip portion 22b having a support structure 24b. The support structure 24b comprises a support structure element 28b which is formed by a thread-like support spring 34b. A distance from individual, in an axial direction 40b, 42b directly adjacent to each other thread revolutions 92b is smaller than a material thickness 90b of a thread turn 92b. In addition, the auxiliary handle device 10b has a support element 44b, which is formed integrally with the fastening unit 78b, wherein a disk-shaped base element 84b of the fastening unit 78b is arranged within a grip end region 76b facing the fastening unit 78b. A damping principle or a setting of a vibration damping is analogous to the comments on FIG. 2 ,

In Figur 4 ist eine alternative Zusatzhandgriffvorrichtung 10c dargestellt. Die Zusatzhandgriffvorrichtung 10c weist einen Zusatzhandgriff 14c, eine Dämpfungseinheit 16c, die ein von einem Gelkissen 20c gebildetes Dämpfungskissen umfasst, und einen Griffbereich 22c mit einer Stützstruktur 24c auf. Die Stützstruktur 24c ist von einer Griffhülse 94c gebildet, die einstückig mit Griffendbereichen 48c, 76c des Zusatzhandgriffs 14c ausgebildet ist. Innerhalb eines von der Griffhülse 94c umgebenen Aufnahmebereichs 26c ist das Gelkissen 20c angeordnet, wobei eine Begrenzung in axialer Richtung 40c, 42c des Aufnahmebereichs 26c für das Gelkissen 20c durch zwei von jeweils einem Gummikegel gebildete Begrenzungselemente 36c, 38c erfolgt. Die Begrenzungselemente 36c, 38c sind in Umfangsrichtung 66c um ein Stützelement 44c angeordnet. Das Stützelement 44c bzw. eine Befestigungseinheit 78c sind zu dem der Befestigungseinheit 78c zugewandten Griffendbereich 76c in radialer Richtung 46c beabstandet angeordnet, so dass eine direkte Schwingungs-übertragung von der Befestigungseinheit 78c über das Stützelement 44c und des Griffendbereichs 76c auf den Griffbereich 22c bzw. auf die Griffhülse 94c verhindert ist. Mittels der Begrenzungselemente 36c, 38c und des Stützelements 44c ist der Aufnahmebereich 26c bzw. ein Dämpfungsparameter und/oder eine Dämpfungseigenschaft des Gelkissens 20c einstellbar. Hierzu weist das der Befestigungseinheit 78c abgewandte Begrenzungselemente 38c ein Gewinde auf, das mit einem Gegengewinde des Stützelements 44c verschraubbar ist. Zudem ist das Stützelement 44c teleskopauszugartig ausgebildet. Ein der Befestigungseinheit 78c abgewandtes Teleskopauszugselement 96c ist dabei drehbar gegenüber weiteren, näher an der Befestigungseinheit 78c angeordneten Teleskopauszugselementen 98c angeordnet, wobei das der Befestigungseinheit 78c zugewandte Begrenzungselement 36c an einem der weiteren Teleskopauszugselemente 98c angeordnet ist. Bei einem Verdrehen des Stützelements 44c bzw. des Teleskopauszugselements 96c durch einen Bediener wird das Begrenzungselement 38c mittels des Gewindes in axialer Richtung 40c, 42c verschoben und dabei je nach Drehrichtung der Aufnahmebereich 26c des Gelkissens 20c vergrößert oder verkleinert bzw. ein Dämpfungsparameter des Gelkissens 20c verändert.In FIG. 4 an alternative auxiliary handle device 10c is shown. The auxiliary handle device 10c has an auxiliary handle 14c, a damping unit 16c, which comprises a cushion pad formed by a gel pad 20c, and a grip portion 22c with a support structure 24c. The support structure 24c is formed by a grip sleeve 94c formed integrally with grip end portions 48c, 76c of the auxiliary handle 14c. Within a receiving region 26c surrounded by the grip sleeve 94c, the gel cushion 20c is arranged, whereby an limitation in the axial direction 40c, 42c of the receiving region 26c for the gel cushion 20c is effected by two delimiting elements 36c, 38c formed by a respective rubber cone. The limiting elements 36c, 38c are arranged in the circumferential direction 66c around a support element 44c. The support element 44c or a fastening unit 78c are arranged spaced apart from the grip end region 76c facing the fastening unit 78c in the radial direction 46c so that a direct vibration transmission from the fastening unit 78c via the support element 44c and the grip end region 76c to the grip region 22c or on the grip sleeve 94c is prevented. By means of the limiting elements 36c, 38c and the support element 44c, the receiving region 26c or a damping parameter and / or a damping property of the gel pad 20c can be set. For this purpose, the limiting element 38c facing away from the fastening unit 78c has a thread which can be screwed to a mating thread of the support element 44c. In addition, the support member 44c is designed telescopic extension. A telescopic extension element 96c facing away from the fastening unit 78c is rotatably arranged relative to further telescopic extension elements 98c arranged closer to the fastening unit 78c, wherein the limiting element 36c facing the fastening unit 78c is arranged on one of the further telescopic extension elements 98c. When the support element 44c or the telescopic extension element 96c is rotated by an operator, the delimiting element 38c is displaced by means of the thread in the axial direction 40c, 42c, thereby enlarging or reducing, depending on the direction of rotation, the receiving region 26c of the gel pad 20c or changing a damping parameter of the gel pad 20c ,

Claims (12)

  1. Auxiliary handle device, in particular for a portable power tool (12a-c), having an auxiliary handle (14a-c) and a damping unit (16a-c) which comprises at least one damping means (18a-c), wherein the damping means (18a-c) is formed at least partially by a damping pad, wherein the auxiliary handle (14a-c) has a gripping region (22a-c) having at least one supporting structure (24a-c) which at least partially surrounds a receiving region (26a-c) for the damping means (18a-c) and wherein the supporting structure (24a-c) has at least one supporting structure element (28a-c), characterized in that the supporting structure element (28b) is formed at least partially by a supporting spring (34b).
  2. Auxiliary handle device according to Claim 1, characterized in that the damping means (18a-c) is formed by a gel pad (20a-c).
  3. Auxiliary handle device at least according to one of the preceding claims, characterized in that the supporting structure element (28a) is formed at least partially by a supporting ring (30a, 32a).
  4. Auxiliary handle device at least according to one of the preceding claims, characterized in that the supporting structure (24a) has at least two supporting rings (30a, 32a) that are arranged in a manner spaced apart from one another.
  5. Auxiliary handle device at least according to one of the preceding claims, characterized in that the damping unit (16a-c) has at least one delimiting element (36a, 38a; 36b, 38b; 36c, 38c) which delimits the receiving region (26a-c) for the damping means (18a-c) in at least one direction (40a, 42a; 40b, 42b; 40c, 42c).
  6. Auxiliary handle device at least according to one of the preceding claims, characterized by at least one supporting element (44a-c) which extends in an axial direction (40a, 42a; 40b, 42b; 40c, 42c) through the receiving region (26a-c).
  7. Auxiliary handle device at least according to Claim 6, characterized in that the damping means (18a-c) is arranged in a radial direction (46a-c) around the supporting element (44a-c).
  8. Auxiliary handle device at least according to Claims 5 and 6, characterized in that the receiving region (26a-c) is settable by the delimiting element (38a-c) and the supporting element (44a-c).
  9. Auxiliary handle device according to one of the preceding claims, characterized in that the auxiliary handle (14a-b) has at least one gripping end region (48a-b) in which the supporting element (44a-b) is arranged in a settable manner.
  10. Auxiliary handle device at least according to Claim 8 or 9, characterized in that the supporting element (44a) has a marking region (50a).
  11. Auxiliary handle device at least according to Claim 10, characterized in that the supporting structure (24a) and/or the damping means (18a) has a viewing window (52a).
  12. Portable power tool, in particular an angle grinder, having a main handle (54a-c) and an auxiliary handle device (10a-c) according to one of the preceding claims.
EP08858972A 2007-12-13 2008-10-22 Auxiliary handle device Not-in-force EP2222440B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710060041 DE102007060041A1 (en) 2007-12-13 2007-12-13 Auxiliary handle device
PCT/EP2008/064248 WO2009074387A2 (en) 2007-12-13 2008-10-22 Auxiliary handle device

Publications (2)

Publication Number Publication Date
EP2222440A2 EP2222440A2 (en) 2010-09-01
EP2222440B1 true EP2222440B1 (en) 2012-10-10

Family

ID=40225422

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08858972A Not-in-force EP2222440B1 (en) 2007-12-13 2008-10-22 Auxiliary handle device

Country Status (3)

Country Link
EP (1) EP2222440B1 (en)
DE (1) DE102007060041A1 (en)
WO (1) WO2009074387A2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015224006A1 (en) * 2015-12-02 2017-06-08 Robert Bosch Gmbh Hand tool with at least one machine-side contact element

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19848126A1 (en) * 1998-10-19 2000-04-27 Wilhelm Kaechele Gmbh Elastome Anti-vibration handle
DE10055395A1 (en) * 2000-11-09 2002-05-29 Bosch Gmbh Robert Hand tools handle
DE10348973A1 (en) * 2003-10-22 2005-05-25 Carl Freudenberg Kg Vibration damped handgrip especially for a power hand tool has a cylindrical outer grip positioned onto a support grip via elastomer damping inserts
EP1905546A3 (en) * 2006-09-27 2008-09-03 Robert Bosch Gmbh Handle
DE102007009169A1 (en) * 2007-02-26 2008-08-28 Robert Bosch Gmbh Handle for handheld machine tool e.g. drilling machine, has handle sleeve arranged on handle core with vibration-isolating unit e.g. knitted fabric, fastening element, and vibration-isolating unit is pre-tensioned and made of metal

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Publication number Publication date
WO2009074387A2 (en) 2009-06-18
EP2222440A2 (en) 2010-09-01
DE102007060041A1 (en) 2009-06-18
WO2009074387A3 (en) 2009-07-30

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