EP2726254B1 - Handle device, in particular for hand tools - Google Patents

Handle device, in particular for hand tools Download PDF

Info

Publication number
EP2726254B1
EP2726254B1 EP12728238.2A EP12728238A EP2726254B1 EP 2726254 B1 EP2726254 B1 EP 2726254B1 EP 12728238 A EP12728238 A EP 12728238A EP 2726254 B1 EP2726254 B1 EP 2726254B1
Authority
EP
European Patent Office
Prior art keywords
unit
handle
grip
handle device
damping
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP12728238.2A
Other languages
German (de)
French (fr)
Other versions
EP2726254A1 (en
Inventor
Andreas Rieger
Carsten Diem
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2726254A1 publication Critical patent/EP2726254A1/en
Application granted granted Critical
Publication of EP2726254B1 publication Critical patent/EP2726254B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G1/00—Handle constructions
    • B25G1/01—Shock-absorbing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/006—Vibration damping means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/02—Construction of casings, bodies or handles
    • B25F5/025—Construction of casings, bodies or handles with torque reaction bars for rotary tools
    • B25F5/026—Construction of casings, bodies or handles with torque reaction bars for rotary tools in the form of an auxiliary handle

Definitions

  • the invention relates to a handle device, in particular for a hand tool, preferably for a motor-driven hand tool according to the preamble of the independent claim.
  • Motor-driven means in particular a drive of the hand tool with an electromotive, piezoelectric or electromagnetic drive principle, but also a drive by means of a fluid motor or internal combustion engine.
  • Handle devices comprising a handle unit and a fastening unit are already known, a spring-elastic damping unit being arranged between the handle unit and the fastening unit.
  • a grip unit is understood to mean in particular a unit or an element which comprises, can be fixed or held in place by at least one hand of an operator to guide the hand tool.
  • the handle unit preferably has a rod-shaped handle element.
  • a fastening unit is understood to mean, in particular, a unit or a device which is provided or designed to connect the handle unit to the hand tool, preferably to be detachably connected, wherein to connect, in particular in relation to the hand tool, in particular a housing of the hand tool, to be spatially fixable is understood.
  • the damping unit is provided to transmit a vibration occurring in an operating state of the handle device or hand tool on the fastening unit to the handle unit at least partially damped, so that an operator is at least partially decoupled from the vibration.
  • Such a handle device is, for example, from DE 100 29 536 A1 known, wherein the fastening unit comprises a fastening part and a threaded pin for connection to a housing of a hand tool.
  • the Damping unit made of a more elastic material than the handle unit.
  • the handle device has the DE 100 29 536 A1 at least one securing element, which is intended to prevent the handle unit from becoming detached from the fastening unit if the damping unit should be damaged or even destroyed in the event of an overload situation or an overload condition, for example.
  • damping units which comprise a rubber-elastic or elastomeric damping element, can be permanently deformed, overstretched, or torn due to extreme overstretching.
  • Such overload states of the damping units occur, inter alia, when the hand tool or the handle device, in particular the handle element, is subjected to impact loads, which are caused, inter alia, by a fall or fall of the hand tool.
  • Examples from the prior art are in the EP0849492A2 , DE102007062720A1 , EP1800807A1 , GB2451747A , DE102007059556A1 , US2007089274A1 and US4800965A disclosed.
  • An object of the present invention is to provide a handle device which has a particularly high overload safety.
  • the handle device according to the invention is simultaneously inexpensive and easy to manufacture.
  • an overload protection unit is provided for this purpose, which protects the damping unit from damage in the event of an overload condition occurring on the handle unit or on the fastening unit, in which, in the overload state, at least a portion of a force flow between the fastening unit and the handle unit is diverted to an additional force flow path as a bypass.
  • a force flow path is understood to mean in particular a spatial path of a force spreading, in particular over body structures of the handle device.
  • a redirection of a portion of a power flow to an additional power flow path is to be understood here in particular to mean that a portion of the power flow, which in a regular operating state is conducted essentially completely via a first body structure - in particular the damping unit - in a second state, primarily the Overload condition, is passed over another body structure - in particular the overload protection unit - past the first body structure.
  • the proportion of the diverted force flow is preferably at least 25%, preferably at least 50% or particularly preferably at least 75% of the total force flow that occurs, which results in particular from the overload condition.
  • the overload protection device can advantageously be made compact.
  • a preferred embodiment of the handle device according to the invention is achieved if the handle unit comprises at least one handle base body, preferably consists of the handle base body. In particular, this advantageously reduces the number of components of the handle device.
  • a handle body is understood to mean in particular a rod-shaped, essentially dimensionally stable handle body, preferably a cylindrical or hollow cylindrical handle body.
  • the handle base body is in particular made of a first material, preferably a thermoplastic or another plastic, in particular an injection-moldable, moldable or injection-moldable plastic.
  • the fastening unit comprises at least one base body.
  • a basic body is understood to mean an essentially dimensionally stable body, which is in particular designed to absorb and / or transmit the force flows occurring between the handle unit and the hand tool, in particular a housing of the hand tool, in particular without being essentially elastic and / or plastic To be subject to deformations in an unloaded condition.
  • the damping unit of the handle device according to the invention is connected to the handle base body and / or base body.
  • the damping unit is integrally connected to the handle body and / or the body.
  • At least two, preferably all three elements from the group of the handle base body, the damping unit and the base body are made of the first material.
  • a cost-effective design of the damping unit according to the invention is achieved if it comprises a defined number - preferably at least 4, 6 or particularly preferably 8 - bending elements which essentially enclose the handle axis in the circumferential direction of a handle axis of the handle unit.
  • a bending element is understood to mean an element that is essentially elastically deformable at least in one spatial direction with respect to a rest position. This spatial direction preferably extends essentially perpendicular to the handle axis.
  • the encirclement of the handle axis is to be understood in particular as a circular, elliptical or polygonal arrangement seen in a cross section along the handle axis and essentially lying on a closed cross-sectional line.
  • the bending elements are arranged essentially radially, in particular radially, pointing away from the handle axis.
  • a particularly effective overload protection unit has a hollow cylinder-like support element which at least partially, preferably almost completely, surrounds the damping unit in the circumferential direction.
  • a hollow cylinder-like support element is understood in particular to mean an element which is suitable for supporting the handle unit with respect to the fastening unit and which has a circular, elliptical or polygonal, preferably essentially closed cross-sectional line as seen along the handle axis.
  • the support element is constructed along the cross-sectional line from support segments interrupted with respect to the cross-sectional line.
  • the overload protection unit in particular the hollow cylinder-like support element, is connected to the handle base body of the handle unit or the base body of the fastening unit, and is preferably formed in one piece with it.
  • a support surface is preferably provided on the respective other body - the base body or the handle base body - which is intended to come into contact with force or to be able to be brought into contact with at least part of a contact surface which is provided on the support element.
  • a contact distance is provided between the contact surface and the support surface in a state of rest of the handle device according to the invention.
  • the contact distance can preferably be configured to be essentially constant over a circumference. However, it can also be beneficial be when the contact distance is a function of a circumferential angle, in particular a circumferential angle with respect to the handle axis.
  • the contact distance is chosen so that in a regular operating state, even when there is vibration-damping activity of the damping unit, the handle unit being able to be deflected from a rest position relative to the fastening unit, the contact surface cannot come into contact with the support surface. In this way it is achieved in particular that the total flow of force between the fastening unit and the handle unit of the handle device according to the invention flows undivided over the damping unit and can be damped accordingly advantageously.
  • the contact distance can be reduced by deflecting the handle unit relative to the fastening unit in such a way that the support surface comes into support contact with the contact surface at least locally in limited contact.
  • An additional force flow path is created, for example, as an advantageous example of the invention via the resulting support contact surface, and a portion of the total force flow can now flow past the damping unit.
  • At least one torsion-inhibiting means is provided on the fastening unit and on the handle unit, which, when the handle unit is twisted relative to the fastening unit, in particular around the handle axis, limits the torsional moments acting on the damping unit to a maximum.
  • the torsion inhibiting means comprises at least one recess and at least one torsion lamella engaging in the recess.
  • the recess and the torsion bar are alternately assigned to one another on the fastening unit and on the handle unit, preferably on the overload protection unit.
  • Fig. 1 shows a hammer drill 10 as an example of a hand tool, in particular a motor-driven hand tool.
  • the rotary hammer 10 comprises a housing 12 with a main handle 14 molded on as an example.
  • the main handle 14 is arranged along a main axis 16 at a rear end region 18 of the housing 12.
  • Tool holder 22 for receiving a work tool, not shown here, is provided on a cylindrically shaped neck region 20 which is essentially opposite the main handle 14.
  • the tool holder 22 of the rotary hammer 10 is arranged essentially rotatably on the neck region 20 of the housing 12.
  • a handle device 24 according to the invention is also arranged on the neck region 20.
  • the handle device 24 is designed as an additional handle 26 of the hammer drill 10.
  • the additional handle 24, 26 has a handle axis 28 which is oriented essentially perpendicular to the main axis 16 of the rotary hammer 10. This applies in particular when the rotary hammer 10 is in an idle state.
  • the additional handle 24, 26 comprises a fastening unit 30, to which one points away from the neck region 20 along the handle axis 28 Connect the damping unit 32 and an overload protection unit 34 according to the invention, and a handle unit 36 connected to the fastening unit by the damping unit 32.
  • the fastening unit 30 comprises a base body 38 as well as a tensioning strap device 40, as they are sufficiently made, for example, from EP 2 191941 A2 , DE 10 2008 000 516 A1 or DE 10 2007 047 881 A1 are known, the disclosure of which is explicitly referred to.
  • the auxiliary handle can be releasably fixed on the housing 12 in a relative rotational position about the cylindrical neck region 20 by means of the tensioning strap device 40.
  • Fig. 2 shows the area between the base body 38 and an upper end area of the handle unit 36 Fig. 1 in an enlarged view.
  • the damping unit 32 and the overload protection unit 34 are formed in one piece with the handle unit 36, in particular a basic handle body 37.
  • the damping unit 32, the overload protection unit 34 and the handle base 37 are preferably made of a first material 42 - preferably a thermoplastic or another plastic, in particular an injection-moldable, pourable or injection-moldable plastic.
  • the damping unit 32 has a first contact surface 44 facing away from the handle unit 36.
  • the base body 38 of the fastening unit 30 has a second contact surface 46, which is provided in particular to support the first contact surface 44 of the damping unit 32.
  • a clamping nut 50 is arranged in a cavity 48 extending through the handle unit 36 and the damping unit 32 along the handle axis 28.
  • the clamping nut 50 is preferably rotatably received in the cavity 48 about the handle axis 28. It is preferably placed substantially below the first contact surface 44 along the handle axis 28.
  • the first contact surface 44 has a bore 52 which is provided essentially concentrically with the grip axis 28 and which is arranged essentially coaxially with an internal thread 54 of the clamping nut 50.
  • the fastening unit 30 furthermore has a clamping space 56, which in turn has a bore 58 at an end region facing the handle unit 36 for the passage of a clamping nut 60 arranged in the clamping space 56.
  • the clamping nut 60 has an external thread 62 adapted to the internal thread 54 so that the damping unit 32 can be connected to the fastening unit 30 by means of the clamping nut 60.
  • the first and second contact surfaces 44, 46 come into contact with one another in such a way that the damping unit 32 is supported on the fastening unit 30, thereby defining a rest position of the handle unit 36 relative to the second contact surface 46.
  • this rest position is essentially parallel, preferably coaxial to the grip axis 28, so that the grip element 36 is oriented substantially perpendicular to the main axis 16 in the rest position.
  • the overload protection unit 34 is in the example of Fig. 1 and Fig. 2 formed as a hollow cylindrical support element 64. This is advantageously made in one piece with the handle base 37.
  • the hollow cylindrical support element 64 is arranged radially on the outside of the damping unit 32 and preferably extends essentially coaxially around the damping unit 32.
  • An end face 66 of the hollow cylindrical support element 64 facing the fastening unit 30 is according to FIG Fig. 2 formed as a contact surface 68.
  • the part of the second stop surface 46 on the base body 38 of the fastening unit 30 opposite the contact surface 68 is provided as a support surface 70 for supporting the contact surface 68.
  • a contact distance d is provided between the contact surface 68 and the support surface 70.
  • the contact distance d is formed in the rest state as essentially constant over a circumferential angle extending around the handle axis 28.
  • the contact distance d is a function of the circumferential angle.
  • Fig. 3 shows a three-dimensional view of an end region 72 of the handle unit 36 according to the embodiment of FIG Fig. 1 and 2nd .
  • the overload protection unit 34 designed as a hollow cylindrical support element 64 and the damping unit 32 according to FIG Fig. 2 to recognize.
  • the central around the handle axis 28 arranged damping unit 32 is designed, for example, coaxially to the support element 64 and demonstrates in the example Fig. 3 a plurality, in particular eight rib-like bending elements 74.
  • the bending elements 74 are preferably designed as a bending beam 76.
  • the bending beams 74, 76 merge at their end facing the end area into an end cap 78 on which the first contact surface 44 is provided.
  • the bending beams 74, 76 are connected to the basic handle body 37, in particular in accordance with Fig. 2 made in one piece with the handle body 37.
  • the eight bending beams 74, 76 are in the example below Fig. 3 like the legs of a spider on the basic grip body 37. If a force oriented essentially transversely to the grip axis 28 now acts on the end cap 78, the bending beams 74, 76 can bend or deform elastically in such a way that the end cap 78 is essentially perpendicular to the grip axis 28 current rest position is deflected or tilted. When this force is released, the end cap 78 returns to its rest position. In other words, the handle base body 37 tilts with respect to the end cap 78 under the action of force.
  • the contact distance d between the contact surface 68 and the support surface 70 is selected such that the two surfaces do not come into contact either partially or completely in a regular operating state of the rotary hammer 10. This prevents a force flow from being able to be conducted via the support element 64 in the regular operating state, which would disadvantageously lead to an effect which counteracts the vibration damping of the damping unit 32 with respect to the vibrations transmitted to the handle base body 37. A contact with the fastening unit 30 caused by the vibrations mentioned Force flow 80 is thus conducted via the damping unit 32 as the only force flow path 80a, 80b.
  • the size of the support contact surface 82 changes, so that the larger the overload force is, the greater the size of the support contact surface 82. It is thereby advantageously achieved that an increasing proportion of the force flow 80 applied to the fastening unit 30 is routed via the additional force flow path 80a, 84 which acts as a bypass.
  • Fig. 4 shows an advantageous further development of the handle device 24, 26 according to the invention Fig. 2 as a second embodiment.
  • Features which are identical or have the same effect as the previous exemplary embodiment are designated with the same reference symbols.
  • handle devices 24, 26 according to the invention which have a known tension band device 40, which can be loosened or fixed by screwing the handle unit 36 relative to the fastening unit 30, it can be advantageous that at least between the fastening unit 30 and the handle unit 36 a torsion inhibiting means 86 is provided which, when the handle unit 36 is twisted relative to the fastening unit 30, limits the torsional moments acting on the damping unit 32 to a maximum.
  • torsion inhibiting means 86 such as, for example, pins, in particular pins placed off-center through the first and second contact surfaces 44, 46, surface structures in the first and second contact surfaces 44, 46 or additional sleeve-like engagement elements between the fastening unit 30 and the overload protection unit 34, in particular the support element 64, which can be used advantageously in a modification of the exemplary embodiment according to the invention without the inventive idea being impaired.
  • Fig. 6 shows an angle grinder or cut-off grinder 110 as a further example of a hand tool, in particular a motor-driven hand tool with a further exemplary embodiment of the handle device 124 according to the invention in the form of an additional handle 126.
  • Features which are identical or have the same effect as the previous exemplary embodiments are represented by reference numerals increased by 100.
  • the angle or cut-off grinder 110 has a housing 112 with a main direction of extent 190.
  • the handle device 124, 126 is arranged on a drive head region 192 of the housing 112 in a direction essentially perpendicular to the main direction of insertion 190, in particular it is attached.
  • the handle device 124, 126 is similar in construction to the exemplary embodiments according to FIGS Figures 1 to 5 , to the description of which reference is made. The features that differ from the previous embodiments are described below.
  • the fastening unit 130 of the handle device 124, 126 in this example comprises a threaded pin 194 at one end applied to the handle unit 136, as is particularly good in FIG Fig. 7 can be seen.
  • the grub screw 194 is provided in particular to be received in a receiving bore arranged on the housing 112, in particular on the drive head region 192, not shown here.
  • this receiving bore has an internal thread that matches an external thread of the threaded pin 194, so that the handle device 124, 126 can be fixed in particular by screwing on the housing 112.
  • two or more receiving bores which are oriented in particular in different directions, can be provided on the housing 112, in particular on the drive head region 192, which allow the handle device 124, 126 according to the invention to be optionally attached.
  • fastening unit 130 instead of the threaded pin 194, other form-fitting and / or force-locking elements such as, for example, locking pins, locking hooks, eyelets or the like can be provided on the fastening unit 130, which, in conjunction with the person skilled in the art, interact with suitable receiving and holding elements in such a way that the handle device 124, 126 connected to the housing 10, 110 of a hand tool, in particular can be releasably connected.
  • Fig. 7 shows an enlarged section of the embodiment Fig. 6 .
  • the overload protection unit 134 is arranged on the fastening unit 130, is preferably molded on.
  • the overload protection unit 134 is designed as a hollow cylindrical support element 164.
  • the support element 164 encloses the damping unit 132, which is designed in a known manner.
  • the overload protection unit 134 has a sequence of individual support lamellae which surround the damping unit 132 instead of a substantially closed shape.
  • the embodiment corresponds to the mode of operation, in particular with regard to the damping of vibrations and the protection against overloading of the damping unit 132 6 and 7 the already known embodiments of a handle device 24, 26 according to the invention, so that reference is made to the description thereof.
  • the embodiment according to Fig. 8a is constructed similarly to the embodiment according to 6 and 7 .
  • both the overload protection unit 134 and the damping unit 132 are connected to the fastening unit, in particular in one piece with the latter.
  • the damping unit 132 is connected to the handle unit 136, in particular to the handle base body 137, via a connecting member 196.
  • the connecting member 196 can be designed as a positive and / or non-positive connection element, in particular as a screw connection.
  • the connecting member 196 is designed as a material connection or is supplemented by a material connection. Known material connections, for example gluing, soldering, welding, are possible.
  • the embodiment corresponds to the mode of operation, in particular with regard to the damping of vibrations and the protection against overloading of the damping unit 132 Fig. 8a the already known embodiments of a handle device 24, 26, 124, 126 according to the invention, so that reference is made to the description thereof.
  • Fig. 8b reproduces a modification of the example Fig. 8a
  • the damping unit 132 is connected in one piece to the fastening unit 130.
  • the overload protection unit 134 designed as a support element 164 is connected in one piece to the base body 137 of the handle unit 136.
  • the damping unit 132 and the handle base body 137 are connected via a connecting member 196.
  • the embodiment corresponds to the mode of operation, in particular with regard to the damping of vibrations and the protection against overloading of the damping unit 132 Fig. 8a the already known embodiments of a Handle device 24, 26, 124, 126 according to the invention, so that reference is made to the description thereof.
  • a handle device 24, 26, 124, 126 can be achieved, for example, by varying the configuration and / or the number of bending elements 74, 174.
  • the idea of the invention can advantageously also be used as the main handle, depending on the hand tool on which it is based, such as, for example, predominantly elongated hand tools.

Landscapes

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

Description

Stand der TechnikState of the art

Die Erfindung betrifft eine Handgriffvorrichtung, insbesondere für ein Handwerkzeug, vorzugsweise für ein motorisch angetriebenes Handwerkzeug nach der Gattung des unabhängigen Anspruchs. Dabei soll unter motorisch angetrieben insbesondere ein Antrieb des Handwerkzeugs mit einem elektromotorischen, piezoelektrischen oder elektromagnetischen Antriebsprinzip, aber auch ein Antrieb mittels eines Fluidmotors oder Verbrennungsmotors verstanden werden.The invention relates to a handle device, in particular for a hand tool, preferably for a motor-driven hand tool according to the preamble of the independent claim. Motor-driven means in particular a drive of the hand tool with an electromotive, piezoelectric or electromagnetic drive principle, but also a drive by means of a fluid motor or internal combustion engine.

Es sind schon Handgriffvorrichtungen umfassend eine Griffeinheit und eine Befestigungseinheit bekannt, wobei zwischen der Griffeinheit und der Befestigungseinheit eine federelastische Dämpfungseinheit angeordnet ist. Unter einer Griffeinheit wird dabei insbesondere eine Einheit oder ein Element verstanden, welches von mindestens einer Hand eines Bedieners zu einer Führung des Handwerkzeugs umfasst, fixiert oder festgehalten werden kann. Die Griffeinheit weist dazu vorzugsweise ein stabförmiges Griffelement auf. Unter einer Befestigungseinheit wird insbesondere eine Einheit oder eine Vorrichtung verstanden, welche dazu vorgesehen oder ausgebildet ist, die Griffeinheit mit dem Handwerkzeug zu verbinden, vorzugsweise lösbar zu verbinden, wobei unter verbinden insbesondere gegenüber dem Handwerkzeug, insbesondere einem Gehäuse des Handwerkzeugs räumlich im wesentlichen festlegbar verbinden verstanden wird. Die Dämpfungseinheit ist dazu vorgesehen, eine in einem Betriebszustand der Handgriffvorrichtung bzw. des Handwerkzeugs an der Befestigungseinheit auftretende Vibration zumindest teilweise gedämpft an die Griffeinheit zu übertragen, so dass ein Bediener zumindest teilweise von der Vibration entkoppelt wird.Handle devices comprising a handle unit and a fastening unit are already known, a spring-elastic damping unit being arranged between the handle unit and the fastening unit. A grip unit is understood to mean in particular a unit or an element which comprises, can be fixed or held in place by at least one hand of an operator to guide the hand tool. For this purpose, the handle unit preferably has a rod-shaped handle element. A fastening unit is understood to mean, in particular, a unit or a device which is provided or designed to connect the handle unit to the hand tool, preferably to be detachably connected, wherein to connect, in particular in relation to the hand tool, in particular a housing of the hand tool, to be spatially fixable is understood. The damping unit is provided to transmit a vibration occurring in an operating state of the handle device or hand tool on the fastening unit to the handle unit at least partially damped, so that an operator is at least partially decoupled from the vibration.

Eine derartige Handgriffvorrichtung ist beispielsweise aus DE 100 29 536 A1 bekannt, wobei die Befestigungseinheit einen Befestigungsteil und einen Gewindestift zur Verbindung mit einem Gehäuse eines Handwerkzeugs umfasst. Dabei ist die Dämpfungseinheit aus einem elastischeren Material gefertigt als die Griffeinheit. Darüber hinaus weist die Handgriffvorrichtung der DE 100 29 536 A1 mindestens ein Sicherungselement auf, welches ein Lösen der Griffeinheit von der Befestigungseinheit verhindern soll, wenn die Dämpfungseinheit zum Beispiel bei einer Überlastsituation bzw. einem Überlastzustand beschädigt oder gar zerstört werden sollte. So können beispielsweise Dämpfungseinheiten, welche ein gummielastisches oder elastomeres Dämpfungselement umfassen, durch Überlastungen dauerhaft verformt, überdehnt oder durch extreme Überdehnung angerissen werden.Such a handle device is, for example, from DE 100 29 536 A1 known, wherein the fastening unit comprises a fastening part and a threaded pin for connection to a housing of a hand tool. Here is the Damping unit made of a more elastic material than the handle unit. In addition, the handle device has the DE 100 29 536 A1 at least one securing element, which is intended to prevent the handle unit from becoming detached from the fastening unit if the damping unit should be damaged or even destroyed in the event of an overload situation or an overload condition, for example. For example, damping units, which comprise a rubber-elastic or elastomeric damping element, can be permanently deformed, overstretched, or torn due to extreme overstretching.

Derartige Überlastungszustände der Dämpfungseinheiten treten unter anderem bei Schlagbelastungen auf das Handwerkzeug bzw. die Handgriffvorrichtung, insbesondere auf das Griffelement, auf, welche unter anderem durch einen Sturz oder Fall des Handwerkzeugs verursacht werden. Beispiele aus dem Stand der Technik sind in der EP0849492A2 , DE102007062720A1 , EP1800807A1 , GB2451747A , DE102007059556A1 , US2007089274A1 und US4800965A offenbart.Such overload states of the damping units occur, inter alia, when the hand tool or the handle device, in particular the handle element, is subjected to impact loads, which are caused, inter alia, by a fall or fall of the hand tool. Examples from the prior art are in the EP0849492A2 , DE102007062720A1 , EP1800807A1 , GB2451747A , DE102007059556A1 , US2007089274A1 and US4800965A disclosed.

Offenbarung der ErfindungDisclosure of the invention

Ein Ziel der vorliegenden Erfindung ist es, eine Handgriffvorrichtung bereitzustellen, welche eine besonders hohe Überlastsicherheit aufweist. Idealerweise ist die erfindungsgemäße Handgriffvorrichtung dabei gleichzeitig kostengünstig und leicht herstellbar.An object of the present invention is to provide a handle device which has a particularly high overload safety. Ideally, the handle device according to the invention is simultaneously inexpensive and easy to manufacture.

Dies wird vorteilhaft durch die erfindungsgemäße Handgriffvorrichtung mit den Merkmalen des Hauptanspruchs erreicht. Erfindungsgemäße ist dazu eine Überlastschutzeinheit vorgesehen ist, welche die Dämpfungseinheit bei einem an der Griffeinheit oder an der Befestigungseinheit auftretenden Überlastzustand vor Beschädigungen schützt, in dem im Überlastzustand zumindest ein Anteil eines Kraftflusses zwischen der Befestigungseinheit und der Griffeinheit auf einen zusätzlichen Kraftflusspfad als Bypass umgeleitet wird. Unter einem Kraftflusspfad wird dabei insbesondere ein räumlicher Weg einer Kraftausbreitung, insbesondere über Körperstrukturen der Handgriffvorrichtung hinweg, verstanden. Unter einer Umleitung eines Anteils eines Kraftflusses auf einen zusätzlichen Kraftflusspfad ist hierbei insbesondere zu verstehen, dass ein Anteil des Kraftflusses, welcher in einem regulären Betriebszustand im wesentlichen vollständig über eine erste Körperstruktur - insbesondere der Dämpfungseinheit - geleitet wird, in einem zweiten Zustand, vornehmlich dem Überlastzustand, über eine weitere Körperstruktur - insbesondere der Überlastschutzeinheit - an der ersten Körperstruktur vorbeigeleitet wird.This is advantageously achieved by the handle device according to the invention with the features of the main claim. According to the invention, an overload protection unit is provided for this purpose, which protects the damping unit from damage in the event of an overload condition occurring on the handle unit or on the fastening unit, in which, in the overload state, at least a portion of a force flow between the fastening unit and the handle unit is diverted to an additional force flow path as a bypass. A force flow path is understood to mean in particular a spatial path of a force spreading, in particular over body structures of the handle device. A redirection of a portion of a power flow to an additional power flow path is to be understood here in particular to mean that a portion of the power flow, which in a regular operating state is conducted essentially completely via a first body structure - in particular the damping unit - in a second state, primarily the Overload condition, is passed over another body structure - in particular the overload protection unit - past the first body structure.

Vorzugsweise ist der Anteil des umgeleiteten Kraftflusses dabei mindestens 25%, vorzugsweise mindestens 50% oder besonders bevorzugt mindestens 75% des auftretenden Gesamtkraftflusses, welcher insbesondere aus dem Überlastzustand resultiert.The proportion of the diverted force flow is preferably at least 25%, preferably at least 50% or particularly preferably at least 75% of the total force flow that occurs, which results in particular from the overload condition.

Durch die in den Unteransprüchen aufgeführten Maßnahmen ergeben sich vorteilhafte Weiterbildungen und Verbesserungen der im Hauptanspruch angegebenen Merkmale.The measures listed in the subclaims result in advantageous developments and improvements of the features specified in the main claim.

Verläuft der zusätzliche Kraftflusspfad im Wesentlichen parallel zu einem Kraftflusspfad über die Dämpfungseinheit, so kann die Überlastschutzeinrichtung vorteilhaft kompakt ausgebildet werden.If the additional force flow path runs essentially parallel to a force flow path via the damping unit, the overload protection device can advantageously be made compact.

Eine bevorzugte Ausführung der erfindungsgemäßen Handgriffvorrichtung wird erreicht, wenn die Griffeinheit zumindest einen Griffgrundkörper umfasst, vorzugsweise aus dem Griffgrundkörper besteht. Dadurch wird insbesondere die Anzahl der Bauteile der Handgriffvorrichtung vorteilhaft reduziert. Unter einem Griffgrundkörper wird dabei insbesondere ein stabförmiger, im wesentlicher formstabiler Griffkörper, vorzugsweise ein zylindrischer oder hohlzylindrischer Griffkörper verstanden. Der Griffgrundkörper ist dabei insbesondere aus einem ersten Material, vorzugsweise einem Thermoplasten oder einem anderen Kunststoff, insbesondere einem spritz-, gieß- oder spritzgiessbaren Kunststoff gefertigt.A preferred embodiment of the handle device according to the invention is achieved if the handle unit comprises at least one handle base body, preferably consists of the handle base body. In particular, this advantageously reduces the number of components of the handle device. A handle body is understood to mean in particular a rod-shaped, essentially dimensionally stable handle body, preferably a cylindrical or hollow cylindrical handle body. The handle base body is in particular made of a first material, preferably a thermoplastic or another plastic, in particular an injection-moldable, moldable or injection-moldable plastic.

Eine weitere vorteilhafte Ausbildung wird erzielt, wenn die Befestigungseinheit zumindest einen Grundkörper umfasst. Unter einem Grundkörper wird dabei ein im wesentlicher formstabiler Körper verstanden, welcher insbesondere dazu ausgebildet ist, die auftretenden Kraftflüsse zwischen der Griffeinheit und dem Handwerkzeug, insbesondere einem Gehäuse des Handwerkzeugs aufzunehmen und/oder zu übertragen, insbesondere ohne selbst dabei wesentlichen elastischen und/oder plastischen Verformungen gegenüber einem unbelasteten Zustand zu unterliegen.A further advantageous embodiment is achieved if the fastening unit comprises at least one base body. A basic body is understood to mean an essentially dimensionally stable body, which is in particular designed to absorb and / or transmit the force flows occurring between the handle unit and the hand tool, in particular a housing of the hand tool, in particular without being essentially elastic and / or plastic To be subject to deformations in an unloaded condition.

In einer vorteilhaft kostengünstigen und montagefreundlichen Ausführung ist die Dämpfungseinheit der erfindungsgemäßen Handgriffvorrichtung mit dem Griffgrundkörper und/oder Grundkörper verbunden ist. In einer bevorzugten Ausbildung ist die Dämpfungseinheit dabei einteilig mit dem Griffgrundkörper und/oder dem Grundkörper verbunden.In an advantageously inexpensive and assembly-friendly embodiment, the damping unit of the handle device according to the invention is connected to the handle base body and / or base body. In a preferred embodiment, the damping unit is integrally connected to the handle body and / or the body.

In einer weiteren bevorzugten Ausbildung sind mindestens zwei, vorzugsweise alle drei Elemente aus der Gruppe aus dem Griffgrundkörper, der Dämpfungseinheit und dem Grundkörper aus dem ersten Material gefertigt.In a further preferred embodiment, at least two, preferably all three elements from the group of the handle base body, the damping unit and the base body are made of the first material.

Eine kostengünstige Ausbildung der erfindungsgemäßen Dämpfungseinheit wird erzielt, wenn diese eine definierte Anzahl - vorzugsweise mindestens 4, 6 oder besonders bevorzugt 8 - Biegeelemente umfasst, welche in Umfangsrichtung einer Griffachse der Griffeinheit die Griffachse im Wesentlichen umschließen. Unter einem Biegeelement wird dabei ein Element verstanden, welches im Wesentlichen elastisch zumindest in eine Raumrichtung gegenüber einer Ruhelage verformbar ist. Vorzugsweise erstreckt sich diese Raumrichtung dabei im Wesentlichen senkrecht zur Griffachse. Weiters ist mit der Umschließung der Griffachse insbesondere eine in einem Querschnitt entlang der Griffachse gesehene kreisförmige, elliptische oder polygone, im Wesentlichen auf einer geschlossenen Querschnittlinie liegende Anordnung zu verstehen. In einer besonders bevorzugten Ausbildung sind die Biegeelemente im Wesentlichen radial, insbesondere strahlenförmig von der Griffachse wegweisend angeordnet.A cost-effective design of the damping unit according to the invention is achieved if it comprises a defined number - preferably at least 4, 6 or particularly preferably 8 - bending elements which essentially enclose the handle axis in the circumferential direction of a handle axis of the handle unit. A bending element is understood to mean an element that is essentially elastically deformable at least in one spatial direction with respect to a rest position. This spatial direction preferably extends essentially perpendicular to the handle axis. Furthermore, the encirclement of the handle axis is to be understood in particular as a circular, elliptical or polygonal arrangement seen in a cross section along the handle axis and essentially lying on a closed cross-sectional line. In a particularly preferred embodiment, the bending elements are arranged essentially radially, in particular radially, pointing away from the handle axis.

Eine besonders wirkungsvolle erfindungsgemäße Überlastschutzeinheit weist ein hohlzylinderähnliches Stützelement auf, welches die Dämpfungseinheit in Umfangsrichtung zumindest teilweise, vorzugsweise nahezu vollständig umgibt. Unter einem hohlzylinderähnlichen Stützelement wird dabei insbesondere ein Element verstanden, welches zur Abstützung der Griffeinheit gegenüber der Befestigungseinheit geeignet ist und dabei eine entlang der Griffachse gesehene kreisförmige, elliptische oder polygone, vorzugsweise im wesentlichen geschlossene Querschnittlinie aufweist. Es kann jedoch auch vorteilhaft sein, wenn das Stützelement entlang der Querschnittslinie aus bezüglicher Querschnittslinie unterbrochenen Stützsegmenten aufgebaut ist.A particularly effective overload protection unit according to the invention has a hollow cylinder-like support element which at least partially, preferably almost completely, surrounds the damping unit in the circumferential direction. A hollow cylinder-like support element is understood in particular to mean an element which is suitable for supporting the handle unit with respect to the fastening unit and which has a circular, elliptical or polygonal, preferably essentially closed cross-sectional line as seen along the handle axis. However, it can also be advantageous if the support element is constructed along the cross-sectional line from support segments interrupted with respect to the cross-sectional line.

In einer bevorzugten Ausbildung ist die Überlastschutzeinheit, insbesondere das hohlzylinderähnliche Stützelement, mit dem Griffgrundkörper der Griffeinheit oder dem Grundkörper der Befestigungseinheit verbunden, vorzugsweise einteilig mit diesem ausgebildet ist. Vorzugsweise ist an dem jeweils anderen Körper - dem Grundkörper oder dem Griffgrundkörper - eine Stützfläche vorgesehen, die dazu vorgesehen ist, zumindest mit einem Teil einer Kontaktfläche, welche am Stützelement vorgesehen ist, kraftübertragend in Kontakt zu treten oder in Kontakt bringbar zu sein.In a preferred embodiment, the overload protection unit, in particular the hollow cylinder-like support element, is connected to the handle base body of the handle unit or the base body of the fastening unit, and is preferably formed in one piece with it. A support surface is preferably provided on the respective other body - the base body or the handle base body - which is intended to come into contact with force or to be able to be brought into contact with at least part of a contact surface which is provided on the support element.

In einer bevorzugten Ausgestaltung ist in einem Ruhezustand der erfindungsgemäßen Handgriffvorrichtung zwischen der Kontaktfläche und der Stützfläche ein Kontaktabstand vorgesehen. Der Kontaktabstand kann dabei vorzugsweise über einen Umfang im Wesentlichen konstant ausgestaltet sein. Es kann jedoch auch von Vorteil sein, wenn der Kontaktabstand eine Funktion eines Umfangswinkels, insbesondere eines Umfangswinkels bezogen auf die Griffachse ist.In a preferred embodiment, a contact distance is provided between the contact surface and the support surface in a state of rest of the handle device according to the invention. The contact distance can preferably be configured to be essentially constant over a circumference. However, it can also be beneficial be when the contact distance is a function of a circumferential angle, in particular a circumferential angle with respect to the handle axis.

Der Kontaktabstand ist dabei so gewählt, dass in einem regulären Betriebszustand auch bei einer vibrationsdämpfenden Aktivität der Dämpfungseinheit, wobei die Griffeinheit relativ zur Befestigungseinheit aus einer Ruhelage ausgelenkt werden kann, die Kontaktfläche nicht mit der Stützfläche in Kontakt treten kann. Auf diese Weise wird insbesondere erreicht, dass der Gesamtkraftfluss zwischen der Befestigungseinheit und der Griffeinheit der erfindungsgemäßen Handgriffvorrichtung ungeteilt über die Dämpfungseinheit fließt und entsprechend vorteilhaft gedämpft werden kann.The contact distance is chosen so that in a regular operating state, even when there is vibration-damping activity of the damping unit, the handle unit being able to be deflected from a rest position relative to the fastening unit, the contact surface cannot come into contact with the support surface. In this way it is achieved in particular that the total flow of force between the fastening unit and the handle unit of the handle device according to the invention flows undivided over the damping unit and can be damped accordingly advantageously.

Tritt jedoch ein Überlastzustand auf, kann sich der Kontaktabstand durch eine Auslenkung der Griffeinheit relativ zur Befestigungseinheit so verringern, dass die Stützfläche mit der Kontaktfläche zumindest lokal begrenzt berührend in Stützkontakt tritt. Über die so entstehende Stützkontaktfläche entsteht beispielhaft ein zusätzlicher Kraftflusspfad als vorteilhaftes Beispiel der Erfindung, und es kann nun ein Anteil des Gesamtkraftflusses an der Dämpfungseinheit vorbei fließen.However, if an overload condition occurs, the contact distance can be reduced by deflecting the handle unit relative to the fastening unit in such a way that the support surface comes into support contact with the contact surface at least locally in limited contact. An additional force flow path is created, for example, as an advantageous example of the invention via the resulting support contact surface, and a portion of the total force flow can now flow past the damping unit.

In einer vorteilhaften Weiterentwicklung der erfindungsgemäßen Handgriffvorrichtung ist an der Befestigungseinheit und an der Griffeinheit mindestens ein Torsionshemmungsmittel vorgesehen, welches bei einer Torsion des Griffeinheit relativ zur Befestigungseinheit, insbesondere um die Griffachse, die auf die Dämpfungseinheit einwirkenden Torsionsmomente auf ein Maximum begrenzt.In an advantageous further development of the handle device according to the invention, at least one torsion-inhibiting means is provided on the fastening unit and on the handle unit, which, when the handle unit is twisted relative to the fastening unit, in particular around the handle axis, limits the torsional moments acting on the damping unit to a maximum.

In bevorzugter Ausführung umfasst das Torsionshemmungsmittel mindestens eine Aussparung und mindestens eine in die Aussparung eingreifenden Torsionslamelle. Dabei sind die Aussparung und die Torsionslamelle wechselweise einander zugeordnet an der Befestigungseinheit und an der Griffeinheit, vorzugsweise an der Überlastschutzeinheit angeordnet.In a preferred embodiment, the torsion inhibiting means comprises at least one recess and at least one torsion lamella engaging in the recess. The recess and the torsion bar are alternately assigned to one another on the fastening unit and on the handle unit, preferably on the overload protection unit.

Weitere vorteilhafte Ausführungen und Weiterbildungen können sich aus der Kombination der im Vorhergehenden beschriebenen Merkmale sowie den Merkmalen der im Folgenden beschriebenen Ausführungsbeispiele ergeben.Further advantageous designs and developments can result from the combination of the features described above and the features of the exemplary embodiments described below.

Beschreibung der ZeichnungenDescription of the drawings

(Ein) Ausführungsbeispiel(e) der Erfindung ist/sind in den Zeichnungen dargestellt und in der folgenden Beschreibung näher erläutert. Es zeigen:

  • Fig. 1 eine Schemaansicht eines Elektrohandwerkzeugs mit einem ersten, als Zusatzhandgriff ausgebildeten Ausführungsbeispiel einer erfindungsgemäßen Handgriffvorrichtung
  • Fig. 2 eine Schnittansicht durch einen Bereich der Handgriffvorrichtung gemäß Fig. 1
  • Fig. 3 eine Ansicht der erfindungsgemäßen Griffeinheit nach Fig. 1
  • Fig. 4 eine Schnittansicht ähnlich Fig. 2 eines zweiten Ausführungsbeispiels
  • Fig. 5 eine Seitenansicht entlang der Linie A - A aus Fig. 4
  • Fig. 6 eine Schemaansicht eines Elektrohandwerkzeugs mit einem dritten, als Zusatzhandgriff ausgebildeten Ausführungsbeispiels
  • Fig. 7 eine Schemaansicht eines weiteren Ausführungsbeispiels einer erfindungsgemäßen Handgriffvorrichtung ähnlich Fig. 6
  • Fig. 8a Schnittansichten des Ausführungsbeispiels nach Fig. 7
  • Fig. 8b eine Variante des Beispiels nach Fig. 8a als alternative Ausführungsform
(A) embodiment (s) of the invention is / are shown in the drawings and explained in more detail in the following description. Show it:
  • Fig. 1 a schematic view of an electric hand tool with a first, designed as an additional handle embodiment of a handle device according to the invention
  • Fig. 2 a sectional view through an area of the handle device according to Fig. 1
  • Fig. 3 a view of the handle unit according to the invention Fig. 1
  • Fig. 4 a sectional view similar Fig. 2 of a second embodiment
  • Fig. 5 a side view along the line A - A from Fig. 4
  • Fig. 6 a schematic view of an electric hand tool with a third, designed as an additional handle embodiment
  • Fig. 7 a schematic view of another embodiment of a handle device according to the invention similar Fig. 6
  • Fig. 8a Sectional views of the embodiment Fig. 7
  • Fig. 8b a variant of the example Fig. 8a as an alternative embodiment

Beschreibung der AusführungsbeispieleDescription of the embodiments

Fig. 1 zeigt einen Bohrhammer 10 als Beispiel eines Handwerkzeugs, insbesondere eines motorisch angetriebenen Handwerkzeugs. Der Bohrhammer 10 umfasst ein Gehäuse 12 mit einem beispielhaft angeformten Haupthandgriff 14. Der Haupthandgriff 14 ist dabei entlang einer Hauptachse 16 an einem hinteren Endbereich 18 des Gehäuses 12 angeordnet. An einem dem Haupthandgriff 14 im Wesentlichen gegenüberliegenden zylindrisch gestalteten Halsbereich 20 ist Werkzeughalter 22 zur Aufnahme eines hier nicht dargestellten Arbeitswerkzeugs vorgesehen. Dabei ist der Werkzeughalter 22 des Bohrhammers 10 im wesentlich drehbar am Halsbereich 20 des Gehäuses 12 angeordnet. Fig. 1 shows a hammer drill 10 as an example of a hand tool, in particular a motor-driven hand tool. The rotary hammer 10 comprises a housing 12 with a main handle 14 molded on as an example. The main handle 14 is arranged along a main axis 16 at a rear end region 18 of the housing 12. Tool holder 22 for receiving a work tool, not shown here, is provided on a cylindrically shaped neck region 20 which is essentially opposite the main handle 14. The tool holder 22 of the rotary hammer 10 is arranged essentially rotatably on the neck region 20 of the housing 12.

Am Halsbereich 20 ist weiters eine erfindungsgemäßen Handgriffvorrichtung 24 angeordnet. Dabei ist die Handgriffvorrichtung 24 als Zusatzhandgriff 26 des Bohrhammers 10 ausgebildet. Im Beispiel nach Fig. 1 weist der Zusatzhandgriff 24, 26 eine Griffachse 28 auf, welche im Wesentlichen senkrecht zur Hauptachse 16 des Bohrhammers 10 ausgerichtet ist. Dies gilt insbesondere in einem Ruhezustand des Bohrhammers 10. Der Zusatzhandgriff 24, 26 umfasst eine Befestigungseinheit 30, an welche sich entlang der Griffachse 28 vom Halsbereich 20 wegweisend eine Dämpfungseinheit 32 sowie eine erfindungsgemäße Überlastschutzeinheit 34 anschließen, und eine durch die Dämpfungseinheit 32 mit der Befestigungseinheit verbundene Griffeinheit 36.A handle device 24 according to the invention is also arranged on the neck region 20. The handle device 24 is designed as an additional handle 26 of the hammer drill 10. In the example after Fig. 1 the additional handle 24, 26 has a handle axis 28 which is oriented essentially perpendicular to the main axis 16 of the rotary hammer 10. This applies in particular when the rotary hammer 10 is in an idle state. The additional handle 24, 26 comprises a fastening unit 30, to which one points away from the neck region 20 along the handle axis 28 Connect the damping unit 32 and an overload protection unit 34 according to the invention, and a handle unit 36 connected to the fastening unit by the damping unit 32.

Die Befestigungseinheit 30 gemäß Fig. 1 umfasst einen Grundkörper 38 sowie eine Spannband-Vorrichtung 40, wie sie zum Beispiel hinlänglich zum Beispiel aus EP 2 191941 A2 , DE 10 2008 000 516 A1 oder DE 10 2007 047 881 A1 bekannt sind, auf deren Offenbarung explizit verwiesen wird. Mittels der Spannband-Vorrichtung 40 kann der Zusatzhandgriff in einer relativen Drehlage um den zylindrischen Halsbereich 20 am Gehäuse 12 lösbar festgelegt werden.The fastening unit 30 according to Fig. 1 comprises a base body 38 as well as a tensioning strap device 40, as they are sufficiently made, for example, from EP 2 191941 A2 , DE 10 2008 000 516 A1 or DE 10 2007 047 881 A1 are known, the disclosure of which is explicitly referred to. The auxiliary handle can be releasably fixed on the housing 12 in a relative rotational position about the cylindrical neck region 20 by means of the tensioning strap device 40.

Fig. 2 zeigt den Bereich zwischen dem Grundkörper 38 und einem oberen Endbereich der Griffeinheit 36 aus Fig. 1 in einer vergrößerten Darstellung. In diesem Ausführungsbeispiel sind die Dämpfungseinheit 32 und die Überlastschutzeinheit 34 einteilig mit der Griffeinheit 36, insbesondere einem Griffgrundkörper 37 ausgebildet. Vorzugsweise sind die Dämpfungseinheit 32, die Überlastschutzeinheit 34 und der Griffgrundkörper 37 aus einem ersten Material 42 hergestellt - vorzugsweise einem Thermoplasten oder einem anderen Kunststoff, insbesondere einem spritz-, gieß- oder spritzgiessbaren Kunststoff. Fig. 2 shows the area between the base body 38 and an upper end area of the handle unit 36 Fig. 1 in an enlarged view. In this exemplary embodiment, the damping unit 32 and the overload protection unit 34 are formed in one piece with the handle unit 36, in particular a basic handle body 37. The damping unit 32, the overload protection unit 34 and the handle base 37 are preferably made of a first material 42 - preferably a thermoplastic or another plastic, in particular an injection-moldable, pourable or injection-moldable plastic.

Die Dämpfungseinheit 32 weist eine der Griffeinheit 36 abgewandte erste Anlagefläche 44 auf. Der Grundkörper 38 der Befestigungseinheit 30 weist eine zweite Anlagefläche 46 auf, welche insbesondere dazu vorgesehen ist, die erste Anlagefläche 44 der Dämpfungseinheit 32 abzustützen.The damping unit 32 has a first contact surface 44 facing away from the handle unit 36. The base body 38 of the fastening unit 30 has a second contact surface 46, which is provided in particular to support the first contact surface 44 of the damping unit 32.

In einem sich durch die Griffeinheit 36 und die Dämpfungseinheit 32 entlang der Griffachse 28 erstreckenden Hohlraum 48 ist eine Spannmutter 50 angeordnet. Die Spannmutter 50 ist dabei vorzugsweise um die Griffachse 28 drehfest im Hohlraum 48 aufgenommen. Sie ist dabei vorzugsweise im Wesentlichen unterhalb der ersten Anlagefläche 44 entlang der Griffachse 28 platziert.A clamping nut 50 is arranged in a cavity 48 extending through the handle unit 36 and the damping unit 32 along the handle axis 28. The clamping nut 50 is preferably rotatably received in the cavity 48 about the handle axis 28. It is preferably placed substantially below the first contact surface 44 along the handle axis 28.

Die erste Anlagefläche 44 weist eine im Wesentlichen konzentrisch zur Griffachse 28 vorgesehene Bohrung 52 auf, welche im Wesentlichen koaxial zu einem Innengewinde 54 der Spannmutter 50 angeordnet ist.The first contact surface 44 has a bore 52 which is provided essentially concentrically with the grip axis 28 and which is arranged essentially coaxially with an internal thread 54 of the clamping nut 50.

Die Befestigungseinheit 30 weist weiters einen Spannraum 56 auf, welcher an einem der Griffeinheit 36 zugewandten Endbereich seinerseits eine Bohrung 58 zur Durchführung einer im Spannraum 56 angeordneten Spannmutter 60 vorgesehen ist. Die Spannmutter 60 weist einen zum Innengewinde 54 angepasstes Außengewinde 62 auf, so dass die Dämpfungseinheit 32 mittels der Spannmutter 60 mit der Befestigungseinheit 30 verbindbar ist. Insbesondere kommen durch entsprechendes Anziehen der Spannschraube 60 in der Spannmutter 50 die erste und zweite Anlagefläche 44, 46 derart miteinander in Kontakt, dass sich die Dämpfungseinheit 32 an der Befestigungseinheit 30 abstützt, wodurch eine Ruhelage der Griffeinheit 36 relativ zur zweiten Anlagefläche 46 definiert wird. Im Beispiel nach Fig. 1 und 2 ist diese Ruhelage im Wesentlichen parallel, vorzugsweise koaxial zur Griffachse 28, so dass das Griffelement 36 in der Ruhelage im wesentlich senkrecht zur Hauptachse 16 ausgerichtet ist.The fastening unit 30 furthermore has a clamping space 56, which in turn has a bore 58 at an end region facing the handle unit 36 for the passage of a clamping nut 60 arranged in the clamping space 56. The clamping nut 60 has an external thread 62 adapted to the internal thread 54 so that the damping unit 32 can be connected to the fastening unit 30 by means of the clamping nut 60. In particular, by appropriately tightening the clamping screw 60 in the clamping nut 50, the first and second contact surfaces 44, 46 come into contact with one another in such a way that the damping unit 32 is supported on the fastening unit 30, thereby defining a rest position of the handle unit 36 relative to the second contact surface 46. In the example after Fig. 1 and 2nd this rest position is essentially parallel, preferably coaxial to the grip axis 28, so that the grip element 36 is oriented substantially perpendicular to the main axis 16 in the rest position.

Die Überlastschutzeinheit 34 ist im Beispiel nach Fig.1 und Fig. 2 als hohlzylindrisches Stützelement 64 ausgebildet. Dieses ist hier vorteilhaft einteilig mit dem Griffgrundkörper 37 ausgeführt. Das hohlzylindrische Stützelement 64 ist radial außenliegend zur Dämpfungseinheit 32 angeordnet und erstreckt sich vorzugsweise im Wesentlichen koaxial um die Dämpfungseinheit 32.The overload protection unit 34 is in the example of Fig. 1 and Fig. 2 formed as a hollow cylindrical support element 64. This is advantageously made in one piece with the handle base 37. The hollow cylindrical support element 64 is arranged radially on the outside of the damping unit 32 and preferably extends essentially coaxially around the damping unit 32.

Eine der Befestigungseinheit 30 zugewandte Stirnfläche 66 des hohlzylindrischen Stützelements 64 ist dabei gemäß Fig. 2 als Kontaktfläche 68 ausgebildet. Der der Kontaktfläche 68 gegenüberliegende Teil der zweiten Anschlagfläche 46 am Grundkörper 38 der Befestigungseinheit 30 ist dabei als Stützfläche 70 zur Abstützung der Kontaktfläche 68 vorgesehen.An end face 66 of the hollow cylindrical support element 64 facing the fastening unit 30 is according to FIG Fig. 2 formed as a contact surface 68. The part of the second stop surface 46 on the base body 38 of the fastening unit 30 opposite the contact surface 68 is provided as a support surface 70 for supporting the contact surface 68.

In dem in Fig. 2 dargestellten Ruhezustand der erfindungsgemäßen Handgriffvorrichtung 24, 26 ist zwischen der Kontaktfläche 68 und der Stützfläche 70 ein Kontaktabstand d vorgesehen. In der bevorzugten Ausführung nach Fig. 2 ist der Kontaktabstand d dabei im Ruhezustand als im Wesentlichen konstant über einen um die Griffachse 28 verlaufenden Umfangswinkel ausgebildet. Es kann jedoch auch von Vorteil sein, wenn der Kontaktabstand d eine Funktion des Umfangswinkels ist. Insbesondere kann es von Vorteil sein, den Kontaktabstand d in Winkelstellungen, im Wesentlichen parallel zu einer Hauptschwingungsrichtung der auftretenden Vibrationen verlaufen, abweichend, insbesondere größer zu wählen als in Winkelstellungen, welche im Wesentlichen quer zur Hauptschwingungsrichtung verlaufen.In the in Fig. 2 shown rest state of the handle device 24, 26 according to the invention, a contact distance d is provided between the contact surface 68 and the support surface 70. According to the preferred embodiment Fig. 2 the contact distance d is formed in the rest state as essentially constant over a circumferential angle extending around the handle axis 28. However, it can also be advantageous if the contact distance d is a function of the circumferential angle. In particular, it can be advantageous to deviate the contact distance d in angular positions, essentially parallel to a main vibration direction of the vibrations that occur, in particular larger than in angular positions that run essentially transverse to the main vibration direction.

Fig. 3 zeigt eine dreidimensionale Ansicht auf einen Endbereich 72 der Griffeinheit 36 nach dem Ausführungsbeispiel der Fig. 1 und 2. Dabei sind insbesondere die als hohlzylindrisches Stützelement 64 ausgebildete Überlastschutzeinheit 34 sowie die Dämpfungseinheit 32 gemäß Fig. 2 zu erkennen. Die zentral um die Griffachse 28 angeordnete Dämpfungseinheit 32 ist beispielhaft koaxial zum Stützelement 64 ausgebildet und weist im Beispiel nach Fig. 3 eine Mehrzahl, insbesondere acht rippenartige Biegeelemente 74 auf. Die Biegeelemente 74 sind dabei vorzugsweise als Biegebalken 76 ausgebildet. Dabei gehen die Biegebalken 74, 76 an ihrem dem Endbereich zugewandten Ende in eine Endkappe 78 über, auf welcher die erste Anlagefläche 44 vorgesehen ist. An ihrem der Endkappe 78 gegenüberliegenden Ende sind die Biegebalken 74, 76 mit dem Griffgrundkörper 37 verbunden, insbesondere gemäß Fig. 2 einteilig mit dem Griffgrundkörper 37 ausgeführt. Fig. 3 shows a three-dimensional view of an end region 72 of the handle unit 36 according to the embodiment of FIG Fig. 1 and 2nd . In particular, the overload protection unit 34 designed as a hollow cylindrical support element 64 and the damping unit 32 according to FIG Fig. 2 to recognize. The central around the handle axis 28 arranged damping unit 32 is designed, for example, coaxially to the support element 64 and demonstrates in the example Fig. 3 a plurality, in particular eight rib-like bending elements 74. The bending elements 74 are preferably designed as a bending beam 76. The bending beams 74, 76 merge at their end facing the end area into an end cap 78 on which the first contact surface 44 is provided. At its end opposite the end cap 78, the bending beams 74, 76 are connected to the basic handle body 37, in particular in accordance with Fig. 2 made in one piece with the handle body 37.

Die acht Biegebalken 74, 76 stehen im Beispiel nach Fig. 3 wie die Beine einer Spinne auf dem Griffgrundkörper 37. Wirkt nun eine im wesentlichen quer zur Griffachse 28 orientierte Kraft auf die Endkappe 78 können sich die Biegebalken 74, 76 derart elastische biegen oder verformen, dass die Endkappe 78 aus ihrer im wesentlichen senkrecht zur Griffachse 28 verlaufende Ruhestellung ausgelenkt bzw. verkippt wird. Bei Nachlassen dieser Kraft kehrt die Endkappe 78 in ihre Ruhestellung zurück. Anders ausgedrückt verkippt sich der Griffgrundkörper 37 gegenüber der Endkappe 78 unter Krafteinwirkung.The eight bending beams 74, 76 are in the example below Fig. 3 like the legs of a spider on the basic grip body 37. If a force oriented essentially transversely to the grip axis 28 now acts on the end cap 78, the bending beams 74, 76 can bend or deform elastically in such a way that the end cap 78 is essentially perpendicular to the grip axis 28 current rest position is deflected or tilted. When this force is released, the end cap 78 returns to its rest position. In other words, the handle base body 37 tilts with respect to the end cap 78 under the action of force.

Im Betrieb des Bohrhammers 10 nach Fig. 1 treten Vibrationen auf, welche in Form von Gehäuseschwingungen am Gehäuse 12, insbesondere über den Halsbereich 20 auf die Spannbandvorrichtung 40 und damit auf die Befestigungseinheit 30 übergehen. Die an der Verfestigungseinheit 30 anliegenden Schwingungen verursachen eine Auslenkung der Endkappe 78 gemäß dem im Vorhergehenden geschilderten Zusammenhang. Aus diese Weise wirken die Biegeelemente 74, 76 der Dämpfungseinheit 32 ausgleichend bzw. dämpfend auf die an der Befestigungseinheit 30 anliegenden Vibrationen, wodurch ein Benutzer des Bohrhammers 10 wirkungsvoll von den auftretenden Gehäuseschwingungen entkoppelt werden kann.In operation of the rotary hammer 10 after Fig. 1 vibrations occur which pass in the form of housing vibrations on the housing 12, in particular via the neck region 20, to the tensioning band device 40 and thus to the fastening unit 30. The vibrations applied to the consolidation unit 30 cause the end cap 78 to deflect in accordance with the connection described above. In this way, the bending elements 74, 76 of the damping unit 32 have a compensating or damping effect on the vibrations applied to the fastening unit 30, as a result of which a user of the hammer drill 10 can be effectively decoupled from the housing vibrations that occur.

Der Kontaktabstand d der Kontaktfläche 68 zur Stützfläche 70 ist dabei so gewählt, dass die beiden Flächen in einem regulären Betriebszustand des Bohrhammers 10 im Wesentlichen weder partiell noch vollständig zur Anlage kommen. Dadurch wird verhindert, dass bereits im regulären Betriebszustand ein Kraftfluss über die Stützelement 64 geleitet werden kann, was nachteilig zu einer der Vibrationsdämpfung der Dämpfungseinheit 32 entgegenlaufenden Wirkung bezüglich der auf den Griffgrundkörper 37 übertragenen Vibrationen führen würde. Ein an der Befestigungseinheit 30 anliegender, durch die genannten Vibrationen verursachter Kraftfluss 80 wird so über die Dämpfungseinheit 32 als einzigem Kraftflusspfad 80a, 80b geleitet.The contact distance d between the contact surface 68 and the support surface 70 is selected such that the two surfaces do not come into contact either partially or completely in a regular operating state of the rotary hammer 10. This prevents a force flow from being able to be conducted via the support element 64 in the regular operating state, which would disadvantageously lead to an effect which counteracts the vibration damping of the damping unit 32 with respect to the vibrations transmitted to the handle base body 37. A contact with the fastening unit 30 caused by the vibrations mentioned Force flow 80 is thus conducted via the damping unit 32 as the only force flow path 80a, 80b.

Steigt die durch Vibrationen oder insbesondere temporäre Schlagimpulse - zum Beispiel durch Sturzbelastungen - verursachte Kraft auf die Biegeelemente 74, 76 bzw. die Endkappe 78 über einen auslegungsbezogenen Maximalwert an, so führt eine dadurch bedingte stärkere Verkippung der Endkappe 78 bezogen auf den Griffgrundkörper 37 dazu, dass die Kontaktfläche 68 zumindest partiell auf einer Stützkontaktfläche 82 mit der Stützfläche 70 in berührenden, insbesondere abstützenden Kontakt kommt. Über die Stützkontaktfläche 82 kann nun ein Anteil des an der Befestigungseinheit 30 anliegenden Kraftflusses 80 anstelle über die Dämpfungseinheit 32 über das Stützelement 64 abfliesen. Es bildet sich temporär ein zusätzlicher Kraftflusspfad 80a, 84 als Bypass zum Kraftflusspfad 80a, 80b über die Dämpfungseinheit 32.If the force on the bending elements 74, 76 or the end cap 78 caused by vibrations or, in particular, temporary impact impulses - for example by falling loads - rises above a design-related maximum value, a consequent greater tilting of the end cap 78 with respect to the handle base body 37 leads to that the contact surface 68 comes into contact, in particular supportive contact, at least partially on a support contact surface 82 with the support surface 70. A portion of the force flow 80 applied to the fastening unit 30 can now flow off via the support contact surface 82 instead of via the damping unit 32 via the support element 64. An additional force flow path 80a, 84 is temporarily formed as a bypass to the force flow path 80a, 80b via the damping unit 32.

Abhängig von der als Überlast auftretenden Kraft verändert sich dabei eine Größe der Stützkontaktfläche 82, so dass mit größer werdender Überlastkraft eine steigende Größe der Stützkontaktfläche 82 einhergeht. Dadurch wird vorteilhaft erreicht, dass zunehmend ein größerer Anteil des an der Befestigungseinheit 30 anliegenden Kraftflusses 80 über den als Bypass wirkenden zusätzlichen Kraftflusspfad 80a, 84 geleitet wird.Depending on the force that occurs as an overload, the size of the support contact surface 82 changes, so that the larger the overload force is, the greater the size of the support contact surface 82. It is thereby advantageously achieved that an increasing proportion of the force flow 80 applied to the fastening unit 30 is routed via the additional force flow path 80a, 84 which acts as a bypass.

Fig. 4 zeigt eine vorteilhafte Weiterentwicklung der erfindungsgemäßen Handgriffvorrichtung 24, 26 gemäß Fig. 2 als zweites Ausführungsbeispiel. Identische oder zum vorhergehenden Ausführungsbeispiel gleichwirkende Merkmale werden dabei mit denselben Bezugszeichen bezeichnet. Fig. 4 shows an advantageous further development of the handle device 24, 26 according to the invention Fig. 2 as a second embodiment. Features which are identical or have the same effect as the previous exemplary embodiment are designated with the same reference symbols.

Insbesondere für erfindungsgemäße Handgriffvorrichtungen 24, 26, welche eine bekannte Spannband-Vorrichtung 40 aufweisen, welche durch relative Verschraubung der Griffeinheit 36 gegenüber der Befestigungseinheit 30 gelöst bzw. festgelegt werden können, kann es vorteilhaft sein, dass zwischen der Befestigungseinheit 30 und der Griffeinheit 36 mindestens ein Torsionshemmungsmittel 86 vorgesehen ist, welches bei einer Torsion des Griffeinheit 36 relativ zur Befestigungseinheit 30 die auf die Dämpfungseinheit 32 einwirkenden Torsionsmomente auf ein Maximum begrenzt.In particular for handle devices 24, 26 according to the invention, which have a known tension band device 40, which can be loosened or fixed by screwing the handle unit 36 relative to the fastening unit 30, it can be advantageous that at least between the fastening unit 30 and the handle unit 36 a torsion inhibiting means 86 is provided which, when the handle unit 36 is twisted relative to the fastening unit 30, limits the torsional moments acting on the damping unit 32 to a maximum.

Im Beispiel nach Fig. 4 sind dazu zwei quer zur Kontaktfläche 68 verlaufende, nutförmige Aussparungen 88 im hohlzylindrischen Stützelement 64 vorgesehen. An der Befestigungseinheit 30 sind weiters in der der Kontaktfläche 68 zugewandten Stützfläche 70 radial zur Bohrung 52 angeordnete Torsionslamellen 90 vorgesehen. In einem montierten Zustand ragen diese Torsionslamellen 90 jeweils in eine der Aussparungen 88, so dass bei einer relativen Verdrehung der Befestigungseinheit 30 gegenüber der Griffeinheit 36 die in Drehrichtung liegenden Flanken 88a der Aussparungen 88 mit den Flanken 90a der zugeordneten Torsionslamellen 90 im wesentlichen in Umfangsrichtung stützend in Kontakt treten, wie es insbesondere in Fig. 5 dargestellt ist. Dadurch kann insbesondere eine übermäßige Drehbelastung der Dämpfungseinheit 32, insbesondere der Biegelemente 74, 76 gegenüber der Endkappe 78 bzw. dem Griffgrundkörper 37 vorteilhaft verhindert werden.In the example after Fig. 4 For this purpose, two groove-shaped recesses 88 running transversely to the contact surface 68 are provided in the hollow cylindrical support element 64. The fastening unit 30 also faces the contact surface 68 Support surface 70 provided radially to the bore 52 torsion plates 90. In an assembled state, these torsion lamellae 90 each protrude into one of the recesses 88, so that when the fastening unit 30 is rotated relative to the handle unit 36, the flanks 88a of the recesses 88 lying in the direction of rotation with the flanks 90a of the associated torsion lamellae 90 are essentially supportive in the circumferential direction get in touch, as is particularly the case in Fig. 5 is shown. As a result, in particular an excessive torsional load on the damping unit 32, in particular the bending elements 74, 76 relative to the end cap 78 or the handle base body 37, can advantageously be prevented.

Anstelle der hier exemplarisch gezeigten zwei Paare von Aussparungen 88 und Torsionslamellen 90 kann auch eine abweichende Anzahl - vorzugsweise ein Paar, drei oder vier Paare - vorteilhaft vorgesehen sein. Auch kann die Anordnung von Aussparung und Torsionslamelle zwischen Stützelement 64 und Befestigungseinheit 30 ausgetauscht oder aber alternierend ausgebildet sein.Instead of the two pairs of cutouts 88 and torsion slats 90 shown here by way of example, a different number - preferably one pair, three or four pairs - can also advantageously be provided. The arrangement of the recess and the torsion bar between the support element 64 and the fastening unit 30 can also be exchanged or alternately formed.

Weiters sind dem Fachmann weitere Ausgestaltungen von Torsionshemmungsmitteln 86 wie beispielsweise Stifte, insbesondere außermittig platzierte Stifte durch die erste und zweite Anlagefläche 44, 46, Oberflächenstrukturen in der ersten und zweiten Anlagefläche 44, 46 oder zusätzliche hülsenartige Eingriffselemente zwischen Befestigungseinheit 30 und Überlastschutzeinheit 34, insbesondere Stützelement 64 bekannt, welche vorteilhaft in einer Abwandlung des erfindungsgemäßen Ausführungsbeispiels eingesetzt werden können, ohne dass der erfinderische Gedanke beeinträchtigt würde.Furthermore, the person skilled in the art is familiar with further configurations of torsion inhibiting means 86 such as, for example, pins, in particular pins placed off-center through the first and second contact surfaces 44, 46, surface structures in the first and second contact surfaces 44, 46 or additional sleeve-like engagement elements between the fastening unit 30 and the overload protection unit 34, in particular the support element 64, which can be used advantageously in a modification of the exemplary embodiment according to the invention without the inventive idea being impaired.

Fig. 6 zeigt einen Winkel- oder Trennschleifer 110 als weiteres Beispiel eines Handwerkzeugs, insbesondere eines motorisch angetriebenen Handwerkzeugs mit einem weiteren Ausführungsbeispiel der erfindungsgemäßen Handgriffvorrichtung 124 in Form eines Zusatzhandgriffs 126. Identische oder zu den vorhergehenden Ausführungsbeispielen gleichwirkende Merkmale werden dabei mit um 100 erhöhten Bezugszeichen dargestellt. Fig. 6 shows an angle grinder or cut-off grinder 110 as a further example of a hand tool, in particular a motor-driven hand tool with a further exemplary embodiment of the handle device 124 according to the invention in the form of an additional handle 126. Features which are identical or have the same effect as the previous exemplary embodiments are represented by reference numerals increased by 100.

Der Winkel- oder Trennschleifer 110 weist eine Gehäuse 112 mit einer Haupterstreckungsrichtung 190 auf. Die Handgriffvorrichtung 124, 126 ist an einem Antriebskopfbereich 192 des Gehäuses 112 ist in einer sich im Wesentlichen senkrecht zur Hauptersteckungsrichtung 190 Richtung angeordnet, insbesondere angebracht.The angle or cut-off grinder 110 has a housing 112 with a main direction of extent 190. The handle device 124, 126 is arranged on a drive head region 192 of the housing 112 in a direction essentially perpendicular to the main direction of insertion 190, in particular it is attached.

Die Handgriffvorrichtung 124, 126 ähnelt in ihrem Aufbau den schon aus dem Vorhergehenden bekannten Ausführungsbespielen gemäß den Figuren 1 bis 5, auf deren Beschreibung grundlegend verwiesen wird. Im Folgenden werden im Wesentlichen die zu den vorhergehenden Ausführungsformen abweichenden Merkmale beschrieben.The handle device 124, 126 is similar in construction to the exemplary embodiments according to FIGS Figures 1 to 5 , to the description of which reference is made. The features that differ from the previous embodiments are described below.

Die Befestigungseinheit 130 der Handgriffvorrichtung 124, 126 umfasst in diesem Beispiel an einem der Griffeinheit 136 angewandten Ende einen Gewindestift 194, wie besonders gut in Fig. 7 zu erkennen ist. Der Gewindestift 194 ist dabei insbesondere dazu vorgesehen, in einer am Gehäuse 112, insbesondere am Antriebskopfbereich 192 angeordneten - hier nicht dargestellten - Aufnahmebohrung aufgenommen zu werden. Diese Aufnahmebohrung weist dazu ein zu einem Außengewinde des Gewindestifts 194 passendes Innengewinde auf, so dass die Handgriffvorrichtung 124, 126 insbesondere durch Verschrauben am Gehäuse 112 festgelegt werden kann. In einer bevorzugten Weiterentwicklung können am Gehäuse 112, insbesondere am Antriebskopfbereich 192 zwei oder mehrere - insbesondere in unterschiedliche Richtungen orientierte - derartige Aufnahmebohrungen vorgesehen sein, welche eine wahlweise Anbringung der erfindungsgemäßen Handgriffvorrichtung 124, 126 ermöglichen.The fastening unit 130 of the handle device 124, 126 in this example comprises a threaded pin 194 at one end applied to the handle unit 136, as is particularly good in FIG Fig. 7 can be seen. The grub screw 194 is provided in particular to be received in a receiving bore arranged on the housing 112, in particular on the drive head region 192, not shown here. For this purpose, this receiving bore has an internal thread that matches an external thread of the threaded pin 194, so that the handle device 124, 126 can be fixed in particular by screwing on the housing 112. In a preferred further development, two or more receiving bores, which are oriented in particular in different directions, can be provided on the housing 112, in particular on the drive head region 192, which allow the handle device 124, 126 according to the invention to be optionally attached.

Anstelle des Gewindestiftes 194 können an der Befestigungseinheit 130 auch andere Form- und/oder Kraftschlusselemente wie beispielsweise Raststifte, Rasthaken, Ösen oder ähnliches vorgesehen sein, welche ,mit dem Fachmann bekannten, passenden Aufnahme- und Halteelementen anstelle der Aufnahmebohrung derart zusammenwirken, dass die Handgriffvorrichtung 124, 126 mit dem Gehäuse 10, 110 eines Handwerkzeugs verbunden, insbesondere lösbar verbunden werden kann.Instead of the threaded pin 194, other form-fitting and / or force-locking elements such as, for example, locking pins, locking hooks, eyelets or the like can be provided on the fastening unit 130, which, in conjunction with the person skilled in the art, interact with suitable receiving and holding elements in such a way that the handle device 124, 126 connected to the housing 10, 110 of a hand tool, in particular can be releasably connected.

Fig. 7 zeigt einen vergrößerten Ausschnitt des Ausführungsbeispiels nach Fig. 6. Dabei ist zu erkennen, dass in Abweichung zu den Ausführungsformen gemäß den Figuren 1 bis 5 die Überlastschutzeinheit 134 an der Befestigungseinheit 130 angeordnet, vorzugsweise angeformt ist. Auch im vorliegenden Beispiel ist die Überlastschutzeinheit 134 als ein hohlzylindrisches Stützelement 164 ausgebildet. Das Stützelement 164 umschließt dabei die Dämpfungseinheit 132, welche in schon bekannter Weise ausgebildet ist. Es kann jedoch auch von Vorteil sein, wenn die Überlastschutzeinheit 134 anstelle einer im Wesentlichen geschlossenen Form eine Abfolge von einzelnen Stützlamellen aufweist, welche die Dämpfungseinheit 132 umgeben. Fig. 7 shows an enlarged section of the embodiment Fig. 6 . It can be seen that, in deviation from the embodiments according to FIGS Figures 1 to 5 the overload protection unit 134 is arranged on the fastening unit 130, is preferably molded on. In the present example too, the overload protection unit 134 is designed as a hollow cylindrical support element 164. The support element 164 encloses the damping unit 132, which is designed in a known manner. However, it may also be advantageous if the overload protection unit 134 has a sequence of individual support lamellae which surround the damping unit 132 instead of a substantially closed shape.

In der Wirkungsweise insbesondere bezüglich der Dämpfung von Vibrationen sowie dem Schutz vor Überlastung der Dämpfungseinheit 132 entspricht das Ausführungsbeispiel gemäß Fig. 6 und 7 den bereits bekannten Ausführungsformen einer erfindungsgemäßen Handgriffvorrichtung 24, 26, so dass auf deren Beschreibung verwiesen wird.The embodiment corresponds to the mode of operation, in particular with regard to the damping of vibrations and the protection against overloading of the damping unit 132 6 and 7 the already known embodiments of a handle device 24, 26 according to the invention, so that reference is made to the description thereof.

Die Figuren 8a und 8b zeigen zwei weitere Abwandlungen der bereits beschriebenen Ausführungsbeispiele. Identische oder zum vorhergehenden Ausführungsbeispiel gleichwirkende Merkmale werden dabei mit denselben Bezugszeichen bezeichnet.The Figures 8a and 8b show two further modifications of the exemplary embodiments already described. Features which are identical or have the same effect as the previous exemplary embodiment are designated with the same reference symbols.

Die Ausführungsform gemäß Fig. 8a ist ähnlich aufgebaut wie das Ausführungsbeispiel nach Fig. 6 und 7. Allerdings sind in diesem Beispiel sowohl Überlastschutzeinheit 134 als auch die Dämpfungseinheit 132 mit der Befestigungseinheit verbunden, insbesondere einteilig mit dieser ausgeführt. Die Dämpfungseinheit 132 wird dabei über ein Verbindungsglied 196 mit der Griffeinheit 136, insbesondere mit dem Griffgrundkörper 137 verbunden. Das Verbindungsglied 196 kann dabei als Form- und/oder Kraftschlusselement, insbesondere als Schraubverbindung ausgebildet sein. Es kann jedoch auch vorteilhaft sein, wenn das Verbindungsglied 196 als eine stoffschlüssige Verbindung ausgebildet oder um eine stoffschlüssige Verbindung ergänzt wird. Dabei kommen als bekannte stoffschlüssige Verbindungen zum Beispiel Kleben, Löten, Schweißen in Frage.The embodiment according to Fig. 8a is constructed similarly to the embodiment according to 6 and 7 . In this example, however, both the overload protection unit 134 and the damping unit 132 are connected to the fastening unit, in particular in one piece with the latter. The damping unit 132 is connected to the handle unit 136, in particular to the handle base body 137, via a connecting member 196. The connecting member 196 can be designed as a positive and / or non-positive connection element, in particular as a screw connection. However, it can also be advantageous if the connecting member 196 is designed as a material connection or is supplemented by a material connection. Known material connections, for example gluing, soldering, welding, are possible.

In der Wirkungsweise insbesondere bezüglich der Dämpfung von Vibrationen sowie dem Schutz vor Überlastung der Dämpfungseinheit 132 entspricht das Ausführungsbeispiel gemäß Fig. 8a den bereits bekannten Ausführungsformen einer erfindungsgemäßen Handgriffvorrichtung 24, 26, 124, 126, so dass auf deren Beschreibung verwiesen wird.The embodiment corresponds to the mode of operation, in particular with regard to the damping of vibrations and the protection against overloading of the damping unit 132 Fig. 8a the already known embodiments of a handle device 24, 26, 124, 126 according to the invention, so that reference is made to the description thereof.

Die Ausführung nach Fig. 8b stellt eine Abwandlung des Beispiels nach Fig. 8a dar. Dabei ist die Dämpfungseinheit 132 einteilig mit der Befestigungseinheit 130 verbunden. Die als Stützelement 164 ausgebildete Überlastschutzeinheit 134 ist andererseits einteilig mit dem Grundkörper 137 der Griffeinheit 136 verbunden. Analog zu Fig. 8a sind die Dämpfungseinheit 132 und der Griffgrundkörper 137 über eine Verbindungsglied 196 verbunden.The execution after Fig. 8b reproduces a modification of the example Fig. 8a The damping unit 132 is connected in one piece to the fastening unit 130. On the other hand, the overload protection unit 134 designed as a support element 164 is connected in one piece to the base body 137 of the handle unit 136. Analogous to Fig. 8a the damping unit 132 and the handle base body 137 are connected via a connecting member 196.

In der Wirkungsweise insbesondere bezüglich der Dämpfung von Vibrationen sowie dem Schutz vor Überlastung der Dämpfungseinheit 132 entspricht das Ausführungsbeispiel gemäß Fig. 8a den bereits bekannten Ausführungsformen einer erfindungsgemäßen Handgriffvorrichtung 24, 26, 124, 126, so dass auf deren Beschreibung verwiesen wird.The embodiment corresponds to the mode of operation, in particular with regard to the damping of vibrations and the protection against overloading of the damping unit 132 Fig. 8a the already known embodiments of a Handle device 24, 26, 124, 126 according to the invention, so that reference is made to the description thereof.

Ausgehend von dem im Vorhergehenden beschriebenen Ausführungsbeispielen einer erfindungsgemäßen Handgriffvorrichtung 24, 26, 124, 126 wird es dem Fachmann ein Leichtes sein, naheliegende Abwandlungen vorzunehmen. Insbesondere können beispielsweise durch Variation der Gestaltung und/oder der Anzahl der Biegelemente 74, 174 vorteilhafte Ausgestaltungen einer erfindungsgemäßen Handgriffvorrichtung erreicht werden. Neben der hier gezeigten Ausgestaltung als Zusatzhandgriff 26, 126 kann der Erfindungsgedanken abhängig vom zu Grunde gelegten Handwerkzeug, wie beispielsweise bei vorwiegend stilförmig elongierten Handwerkzeugen vorteilhaft auch als Haupthandgriff eingesetzt werden.Starting from the exemplary embodiments of a handle device 24, 26, 124, 126 according to the invention described above, it will be easy for the person skilled in the art to make obvious modifications. In particular, advantageous configurations of a handle device according to the invention can be achieved, for example, by varying the configuration and / or the number of bending elements 74, 174. In addition to the configuration shown here as an additional handle 26, 126, the idea of the invention can advantageously also be used as the main handle, depending on the hand tool on which it is based, such as, for example, predominantly elongated hand tools.

Claims (12)

  1. Handle device (24; 124), in particular for a hand tool, comprising a grip unit (36; 126) and a fastening unit (30; 130), wherein a spring-elastic damping unit (32; 132) is arranged between the grip unit (36; 136) and the fastening unit (30; 130), said damping unit (32; 132) being provided to transmit a vibration that occurs on the fastening unit (30; 130) in an operating state of the handle device (24; 124) to the grip unit (36; 136) in an at least partially damped manner such that an operator is at least partially decoupled from the vibration, wherein an overload protection unit (34; 134) is furthermore provided, which, in the event of an overload state occurring on the grip unit (36; 136) or on the fastening unit (30; 130), protects the damping unit (32; 132) from damage by at least a part of a force flux (80; 180) between the fastening unit (30; 130) and the grip unit (36; 136) being diverted, in the overload state, as a bypass to an additional force flux path (80a, 84; 180a, 184), characterized in that at least one torsion inhibiting means (86; 186) is furthermore provided on the fastening unit (30; 130) and on the grip unit (36; 136), said torsion inhibiting means (86; 186) limiting torsional moments acting on the damping unit (32; 132) to a maximum in the event of torsion of the grip unit (36; 136) relative to the fastening unit (30; 130), wherein the torsion inhibiting means (86; 186) comprises at least one recess (88; 188) and at least one torsion blade (90; 190) engaging in the recess (88; 188), wherein the recess (88; 188) and the torsion blade (90; 190) are arranged in a manner mutually assigned to one another on the fastening unit (30; 130) and on the grip unit (36; 136), preferably on the overload protection unit (34; 134) .
  2. Handle device according to Claim 1, characterized in that the additional force flux path (80a, 84; 180a, 184) extends in a manner substantially parallel to a force flux path (80a, 80b; 180a, 180b) via the damping unit (32; 132).
  3. Handle device according to Claim 1 or 2, characterized in that the grip unit (36; 136) comprises at least one main grip body (37; 137), and preferably consists of the main grip body (37; 137).
  4. Handle device according to one of the preceding claims, characterized in that the fastening unit (30; 130) comprises at least one main body (38; 138).
  5. Handle device according to one of the preceding claims, characterized in that the damping unit (32; 132) is connected to the main grip body (37; 137) and/or main body (38; 138).
  6. Handle device according to Claim 5, characterized in that the damping unit (32; 132) is formed as one part with the main grip body (37; 137) of the grip unit (36; 136) or as one part with the main body (38; 138) of the fastening unit (30; 130).
  7. Handle device according to Claim 5 or 6, characterized in that the damping unit (32; 132) comprises a defined number of bending elements (74, 76; 174, 176) which substantially enclose a grip axis (28; 128) of the grip unit (36; 136) in the circumferential direction thereof.
  8. Handle device according to Claim 7, characterized in that the bending elements (74, 76; 174, 176) are arranged in a manner directed substantially radially, in particular in a radiating manner away from the grip axis (28; 128).
  9. Handle device according to one of the preceding claims, characterized in that the overload protection unit (34; 134) has a hollow-cylinder-like support element (64; 164) which at least partially, preferably virtually entirely, surrounds the damping unit (32; 132) in the circumferential direction.
  10. Handle device according to one of the preceding claims, characterized in that the overload protection unit (34; 134), in particular the hollow-cylinder-like support element (64; 164), is connected to the main grip body (37; 137) of the grip unit (36; 136) or to the main body (38; 138) of the fastening unit (30; 130), and is preferably formed as one part therewith.
  11. Auxiliary handle (26; 126) for a hand tool, in particular a motor-driven hand tool comprising a handle device (24; 124) according to one of the preceding claims.
  12. Hand tool, in particular a motor-driven hand tool (10; 110), comprising a handle and/or an auxiliary handle (26; 126) which has a handle device (24; 124) according to at least one of Claims 1 to 10.
EP12728238.2A 2011-06-30 2012-06-14 Handle device, in particular for hand tools Active EP2726254B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011078376A DE102011078376A1 (en) 2011-06-30 2011-06-30 Handle device, in particular for hand tools
PCT/EP2012/061309 WO2013000724A1 (en) 2011-06-30 2012-06-14 Handle device, in particular for hand tools

Publications (2)

Publication Number Publication Date
EP2726254A1 EP2726254A1 (en) 2014-05-07
EP2726254B1 true EP2726254B1 (en) 2020-04-01

Family

ID=46319740

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12728238.2A Active EP2726254B1 (en) 2011-06-30 2012-06-14 Handle device, in particular for hand tools

Country Status (6)

Country Link
US (1) US9370860B2 (en)
EP (1) EP2726254B1 (en)
CN (1) CN103747921B (en)
DE (1) DE102011078376A1 (en)
RU (1) RU2014102889A (en)
WO (1) WO2013000724A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112296393A (en) * 2020-10-16 2021-02-02 武义县亚太电器有限公司 High-safety electric drill

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6095460B2 (en) * 2013-04-17 2017-03-15 株式会社マキタ Handle and power tool
JP5997660B2 (en) * 2013-05-29 2016-09-28 株式会社マキタ Auxiliary handle and reciprocating work tool with auxiliary handle
US10131042B2 (en) 2013-10-21 2018-11-20 Milwaukee Electric Tool Corporation Adapter for power tool devices
JP2015139864A (en) * 2014-01-30 2015-08-03 パナソニックＩｐマネジメント株式会社 Auxiliary handle and electric power tool with auxiliary handle
US10272559B2 (en) * 2014-11-12 2019-04-30 Black & Decker Inc. Side handle
CA2954154A1 (en) * 2016-01-11 2017-07-11 Kailash C. Vasudeva Power tool with detachable auxiliary handle
JP6863705B2 (en) * 2016-10-07 2021-04-21 株式会社マキタ Electric tool
EP3894136A4 (en) * 2018-12-10 2023-01-11 Milwaukee Electric Tool Corporation High torque impact tool
US12021437B2 (en) 2019-06-12 2024-06-25 Milwaukee Electric Tool Corporation Rotary power tool
DE102020115087A1 (en) * 2020-06-05 2021-12-09 Festool Gmbh Handle device for a hand machine tool
WO2022204118A1 (en) * 2021-03-25 2022-09-29 Milwaukee Electric Tool Corporation Side handle for power tool

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4800965A (en) * 1984-03-23 1989-01-31 Metabowerke Gmbh & Co. Damping element, and its installation in a motor-driven hand tool
US20070089274A1 (en) * 2005-10-25 2007-04-26 Black And Decker, Inc. Vibration dampening handle for a powered apparatus

Family Cites Families (77)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US450906A (en) * 1891-04-21 William blakely
US264798A (en) * 1882-09-19 Rubber-covered handle
US281626A (en) * 1883-07-17 Half to the j
US786050A (en) * 1904-09-19 1905-03-28 Clarence H Richwood Fluid-actuated vibrator.
US2921326A (en) * 1956-10-09 1960-01-19 Iodent Chemical Company Toothbrush
US3302673A (en) * 1965-02-08 1967-02-07 Harold S Forsberg Composite tool handle
US3559512A (en) * 1969-06-27 1971-02-02 Cincinnati Milling Machine Co Series vibration damper
USRE29402E (en) * 1974-05-15 1977-09-20 Caterpillar Tractor Co. Vibration isolating grip for pneumatic hand tools
DE2951886A1 (en) * 1979-12-21 1981-07-02 Hilti AG, 9494 Schaan HANDLE, ESPECIALLY FOR HAND DEVICES
DE8006965U1 (en) * 1980-03-14 1981-08-27 Robert Bosch Gmbh, 7000 Stuttgart ADDITIONAL HANDLE FOR A HAND MACHINE TOOL
AU7190981A (en) * 1980-06-22 1982-03-04 Kazuto Seto Vibration isolation type handle device
JPS6052915B2 (en) * 1980-10-13 1985-11-21 誠 南舘 Anti-vibration handle device
US4452289A (en) * 1981-12-28 1984-06-05 Fiskars Manufacturing Corporation Combination hand grip and bits storage
SE442963B (en) * 1984-05-07 1986-02-10 Atlas Copco Ab VIBRATION-INSULATING HANDLE
US4660832A (en) * 1985-03-25 1987-04-28 Shomo Robert D Shock and vibration absorbent handle
DE3731059C2 (en) * 1987-09-16 1995-11-02 Hilti Ag Additional handle for drilling equipment
US4834596A (en) * 1987-11-23 1989-05-30 T.M. Smith Tool International Corporation Quick change spindle adaptor for tool holder
US4820090A (en) * 1988-06-03 1989-04-11 Chen Pi Chi Multipurpose handle grip for holding electric tools
SE467635B (en) * 1988-09-30 1992-08-17 Electrolux Ab Vibration damper in motor saw
US4972733A (en) * 1988-12-12 1990-11-27 Textron Inc Shock absorbing grip
DE4011124A1 (en) * 1990-04-06 1991-10-10 Metabowerke Kg VIBRATION DAMPED HANDLE
SE467690B (en) * 1990-12-11 1992-08-31 Atlas Copco Tools Ab VIBRATION INSULATED TOOL HANDLE
US5269045A (en) * 1991-02-01 1993-12-14 Ingersoll-Rand Company Ergonomically adjustable tool handle
JPH06507847A (en) * 1991-12-17 1994-09-08 インガーソル　ランド　カンパニー Device to reduce vibration transmission in hand tools
US5273120A (en) * 1993-05-26 1993-12-28 Ingersoll-Rand Company Power tool with a vibration absorbing handle
US5365637A (en) * 1993-06-15 1994-11-22 Ingersoll-Rand Company Flex handle for a power tool
FR2714863B1 (en) * 1994-01-11 1996-03-29 Facom Tool handle.
US5701998A (en) * 1995-07-18 1997-12-30 Perry; Eric J. Baseball bat covers
FR2743321B1 (en) * 1996-01-05 1998-02-13 Soc D Expl Des Ets Racodon Sa HANDLE FOR HAND HITTING TOOLS
US5769174A (en) 1996-12-18 1998-06-23 Ingersoll-Rand Company Parallel displacement single axis vibration isolator
US6349451B1 (en) * 2000-01-28 2002-02-26 Robert D. Newman/Specialty Products Of Greenwood, Missouri, Inc. Universal tool handle configured for various extension pole connectors
DE10029536A1 (en) * 2000-06-15 2001-12-20 Bosch Gmbh Robert Handgrip for a portable power tool has an elastic vibration damper at the mounting to the tool housing to prevent vibrations through the handle and maintain a mounting at the tool housing if the damper is damaged
US6361317B1 (en) * 2000-06-23 2002-03-26 Hu-Friedy Mfg. Co., Inc. Molded, reinforced handle
US6595300B2 (en) * 2001-12-20 2003-07-22 Black & Decker Inc. Side handles on drill/drivers
CN2537524Y (en) * 2002-04-30 2003-02-26 苏州宝时得电动工具有限公司 Electric tool unit with at least one handle
US6832413B1 (en) * 2002-12-10 2004-12-21 Johnson Research & Development Company, Inc. Reformable handle
US6968599B2 (en) * 2003-04-17 2005-11-29 Shedrain Corporation Pliable handle
US7234205B2 (en) * 2003-04-17 2007-06-26 Shedrain Corporation Pliable handle
US6974626B2 (en) * 2003-05-08 2005-12-13 Patricia Horacek Shock and vibration dampening grip
US7191494B2 (en) * 2003-08-11 2007-03-20 Badiali John A Stabilizer for rotary tools
EP1514648B1 (en) * 2003-09-10 2013-11-20 Makita Corporation Vibration isolating handle
US6820523B1 (en) * 2004-01-09 2004-11-23 Chia Yu Chen Tool having detachable handle
US20060169308A1 (en) * 2005-02-03 2006-08-03 Yo Fu Umbrella Co., Ltd. Umbrella handle
US7252156B2 (en) * 2005-03-31 2007-08-07 Makita Corporation Vibration isolation handle
CN100509303C (en) * 2005-03-31 2009-07-08 株式会社牧田 Handle
JP4648072B2 (en) * 2005-04-28 2011-03-09 株式会社日立プラントテクノロジー Tool with damper and method of manufacturing impeller or guide vane of fluid machine using the same
US7401384B2 (en) * 2005-09-30 2008-07-22 Xiamen Jundian House Omaments Co., Ltd. Pliable handle
US8756766B2 (en) * 2005-10-25 2014-06-24 Black & Decker Inc. Vibration dampening handle for a powered apparatus
US7441310B2 (en) * 2005-10-28 2008-10-28 Xiamen Jundian House Omaments Co., Ltd. Pliable handle on which a button can be installed
JP4925657B2 (en) * 2005-12-14 2012-05-09 ヤマハ発動機株式会社 Vehicle handle and vehicle
DE102005000202A1 (en) * 2005-12-23 2007-06-28 Hilti Ag Handle with vibration reducing device
US20070295376A1 (en) * 2006-06-22 2007-12-27 Chen-Te Liu Improved Unbrella Handle Structure
JP2008012660A (en) * 2006-07-01 2008-01-24 Black & Decker Inc Pavement breaker
JP2008012664A (en) * 2006-07-01 2008-01-24 Black & Decker Inc Lubricant pump for hammer drill
CA493745A (en) * 2006-10-04 1953-06-16 E. Glassburn William Bridge-connected relay
DE102007012301A1 (en) * 2006-10-25 2008-04-30 Robert Bosch Gmbh Handle e.g. auxiliary handle, for e.g. angle grinder, has damping unit provided with mounting unit between grip unit and support unit, where support unit forms rear section with mounting unit in grip unit
DE102006061247A1 (en) * 2006-12-22 2008-06-26 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
DE102007011787A1 (en) * 2007-03-12 2008-09-18 Robert Bosch Gmbh Handle for use with e.g. boring machine, has gripping unit and fastening unit arranged at distance from each other by damping unit, where contact surfaces of gripping and fastening units are profiled such that surfaces are enlarged
DE102007012312A1 (en) * 2007-03-14 2008-09-18 Robert Bosch Gmbh handle
DE102007055735A1 (en) * 2007-03-29 2008-10-02 Robert Bosch Gmbh handle
DE102007037046A1 (en) * 2007-08-06 2009-02-12 Robert Bosch Gmbh Auxiliary handle device
DE102007037048A1 (en) * 2007-08-06 2009-02-12 Robert Bosch Gmbh Auxiliary handle device
DE102007037081A1 (en) * 2007-08-06 2009-02-12 Robert Bosch Gmbh Auxiliary handle device
DE102007047881A1 (en) 2007-11-28 2009-06-04 Hilti Aktiengesellschaft Hand tool with additional handle with strap
DE102007059556A1 (en) * 2007-12-11 2009-06-18 Robert Bosch Gmbh handle
DE102007060636A1 (en) * 2007-12-17 2009-06-18 Robert Bosch Gmbh Electric hand tool, in particular a drill and / or chisel hammer, with a Tilgereinheit
DE102007062720A1 (en) * 2007-12-27 2009-07-02 Robert Bosch Gmbh Auxiliary handle device
GB0801313D0 (en) * 2008-01-24 2008-03-05 Black & Decker Inc Handle for power tool
DE102008000516A1 (en) 2008-03-05 2009-09-10 Robert Bosch Gmbh Additional handle and hand tool
EP2123406B1 (en) * 2008-05-19 2011-12-21 AEG Electric Tools GmbH Vibration dampened holder for additional hand grip
DE102008044182A1 (en) 2008-11-28 2010-06-02 Hilti Aktiengesellschaft Additional handle for a hand tool
JP5277017B2 (en) * 2009-02-13 2013-08-28 株式会社マキタ Auxiliary handle
DE102009002463A1 (en) * 2009-04-17 2010-10-21 Hilti Aktiengesellschaft Side handle
JP5436071B2 (en) * 2009-07-02 2014-03-05 株式会社マキタ Work tools
DE202010002296U1 (en) * 2010-02-11 2011-08-26 Illinois Tool Works Inc. Handle assembly
GB201011978D0 (en) * 2010-07-15 2010-09-01 Black & Decker Inc Side handle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4800965A (en) * 1984-03-23 1989-01-31 Metabowerke Gmbh & Co. Damping element, and its installation in a motor-driven hand tool
US20070089274A1 (en) * 2005-10-25 2007-04-26 Black And Decker, Inc. Vibration dampening handle for a powered apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112296393A (en) * 2020-10-16 2021-02-02 武义县亚太电器有限公司 High-safety electric drill
CN112296393B (en) * 2020-10-16 2021-05-11 武义县亚太电器有限公司 High-safety electric drill

Also Published As

Publication number Publication date
DE102011078376A1 (en) 2013-01-03
EP2726254A1 (en) 2014-05-07
CN103747921B (en) 2016-11-16
US20140223695A1 (en) 2014-08-14
CN103747921A (en) 2014-04-23
WO2013000724A1 (en) 2013-01-03
RU2014102889A (en) 2015-08-10
US9370860B2 (en) 2016-06-21

Similar Documents

Publication Publication Date Title
EP2726254B1 (en) Handle device, in particular for hand tools
EP1958735B1 (en) Hand tool device
EP2123406B1 (en) Vibration dampened holder for additional hand grip
EP1674216B1 (en) Lateral handgrip
DE10105826A1 (en) Vibration damper between two components
EP1332023A1 (en) Hand machine tool comprising at least one handle
DE102010011986B4 (en) Hand-held tool
EP2018937A2 (en) Hand tool device with damper
EP3331665B1 (en) Side grip
DE102015122226B4 (en) Engine mount pendulum support device
DE102009028458B4 (en) Modular handlebar element
DE10361295A1 (en) Handle tube of a hand-held implement
DE4143218C2 (en) Device for connecting screwdriver bits
EP2377729B1 (en) Device for fixing a roll-bar or similar extension component on a vehicle
DE102014102661B3 (en) Steering column for a motor vehicle
DE102008021916B4 (en) Side stable pendulum bearing
DE102019006248B3 (en) ENGINE MOUNT
EP2162589A1 (en) Damping device and fastening arrangment
EP2047953B1 (en) Handle and power tool
DE102009029626B4 (en) Hand tool
DE102006028705B3 (en) Passive vibration damper for use in automobile engineering, has coupling surface running parallel to main extension plane of damper, in which cantilever arm is extended along elastomer spring and damping mass
EP0229334B1 (en) Mobile mowing machine, guided by hand
EP3127657A1 (en) Side grip
DE102009029074B4 (en) Vibration absorber arrangement
DE202004012400U1 (en) Electrically operated hand tool e.g. angle grinder, has stabilization component extending from body to gripping area, limitedly guided in guide of gripping area against radial direction and movable in axial direction within gripping part

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20140130

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20190520

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20191219

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: AT

Ref legal event code: REF

Ref document number: 1250774

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200415

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502012015920

Country of ref document: DE

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: ROBERT BOSCH GMBH

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20200623

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200701

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20200625

Year of fee payment: 9

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20200401

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200817

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200401

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200401

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200401

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200701

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200702

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200801

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200401

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200401

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200401

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200401

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200401

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502012015920

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200401

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200401

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200401

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200401

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200401

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200401

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200401

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200401

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200401

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200401

26N No opposition filed

Effective date: 20210112

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200614

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20200630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200630

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200630

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200614

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200401

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200630

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 1250774

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200614

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200614

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20210614

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210614

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200401

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200401

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210630

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200401

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200401

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20230817

Year of fee payment: 12

REG Reference to a national code

Ref country code: DE

Ref legal event code: R084

Ref document number: 502012015920

Country of ref document: DE