EP4327984A1 - Dispositif de réglage de poignée - Google Patents

Dispositif de réglage de poignée Download PDF

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Publication number
EP4327984A1
EP4327984A1 EP22192336.0A EP22192336A EP4327984A1 EP 4327984 A1 EP4327984 A1 EP 4327984A1 EP 22192336 A EP22192336 A EP 22192336A EP 4327984 A1 EP4327984 A1 EP 4327984A1
Authority
EP
European Patent Office
Prior art keywords
handle
tool
hand tool
adjustment device
axis
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.)
Pending
Application number
EP22192336.0A
Other languages
German (de)
English (en)
Inventor
Erik Kohler
Wolfgang Dürnegger
Marco Schweitzer
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.)
C&E Fein GmbH and Co
Original Assignee
C&E Fein GmbH and Co
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 C&E Fein GmbH and Co filed Critical C&E Fein GmbH and Co
Priority to EP22192336.0A priority Critical patent/EP4327984A1/fr
Publication of EP4327984A1 publication Critical patent/EP4327984A1/fr
Pending legal-status Critical Current

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Classifications

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

Definitions

  • the present invention relates to a handle adjustment device for the relative adjustment of a handle and an electric hand tool provided with this handle adjustment device.
  • Adjusting the handle means changing the position of the handle relative to the hand tool.
  • the handle can usually be attached in various defined positions. This allows the user to handle the hand tool as required for a specific application.
  • the adjustment takes place via a threaded connection.
  • Both the handle and the housing of the hand tool have part of the threaded connection.
  • a bolt with an external thread on the part of the handle facing the machine with which an operative connection is established with an opening in the housing of the machine, which includes an internal thread.
  • EP 2647473 B1 relates to a hand-held power tool with an additional handle for a hand-held power tool with fastening means for releasably attaching the handle to the hand-held power tool.
  • the fastening means have an extension which can be accommodated at least in sections in a recess. Either the extension is arranged on the handle and the recess in the hand-held power tool, or the extension is arranged on the hand-held power tool and the recess in the handle.
  • the fastening means have at least one element that is adjustable relative to the extension and is involved in producing and/or releasing and/or securing a positive and/or frictional connection between the handle and the hand-held power tool.
  • the element comprises at least one ball caught in the extension, which can be adjusted radially relative to the extension between a release position and a fixing position by means of a taper rod.
  • EP 3020510 B1 describes a side handle for a power tool comprising a base that can be attached to a power tool.
  • the side handle further includes a handle having a central axis, an elongated tubular interior portion having a first end and a second end extending toward the central axis, and an outer sleeve surrounding at least a portion of the interior portion.
  • the outer sleeve is connected to the inner section at the first end of the inner section via a connecting section connected, wherein the connecting portion is elastically deformable to enable pivoting movement of the outer sleeve relative to the inner portion about an axis perpendicular to the central axis of the handle.
  • the handle is attached to the base at the second end of the inner section.
  • the end of the outer sleeve remote from the connecting portion is disposed in proximity to a part of the base when no external forces are applied to the outer sleeve.
  • auxiliary handle for use on a power tool having a housing defining a handle end portion and a chuck end portion, a chuck being disposed on the chuck end portion of the housing.
  • the auxiliary handle includes a first clamp for engaging the housing at a first position, a second clamp for engaging the housing at an engaging position, the second clamp being movable in a first direction toward the first clamp independently of the first clamp to pair the assist handle with the housing.
  • the second clamp may also be moved independently of the first clamp in a second direction away from the first clamp to release the assist handle from the housing.
  • the object of the invention is to improve, in particular to accelerate, the adjustment and positioning of a handle.
  • the handle adjustment device is used for the relative adjustment of a handle relative to an electric hand tool or its housing, in particular in the circumferential direction around a tool longitudinal axis of an electric hand tool.
  • the tool storage can be part of the hand tool and/or part of the adjusting means.
  • the handle adjustment device comprises an adjustment means which can be adjusted on the tool bearing, in particular rotatable in the circumferential direction about the longitudinal axis of the tool on the tool bearing, and can be connected to the hand tool.
  • the tool bearing is preferably formed from two bearing halves, which in the assembled state have an area on which the adjusting means is rotatably arranged.
  • the storage area can be formed entirely or partially on a bearing half.
  • the handle comprises a first grip element with a first end facing the hand tool, which is connected to the adjusting means, and a second end facing away from the hand tool.
  • the handle additionally comprises a second handle element which is displaceable along a longitudinal axis of the handle on the first handle element from a disengagement position to an engagement position. In the disengagement position, the handle and the adjusting means are adjustable relative to the tool bearing, in particular rotatable about the longitudinal axis of the tool along the circumferential direction of the tool bearing.
  • the second handle element In the engagement position, the second handle element can be moved into an engagement region by engaging an engagement section of the first grip element, in which the second grip element is supported on the engagement section in the direction along the longitudinal axis of the handle.
  • the handle has a clamping means that can be actuated by a user, ie movable while applying work power, by actuating which the second handle element can be moved into a locking position in the engagement area relative to the first handle element.
  • the length of the engagement area corresponds in particular to the path that the second clamping element travels when fixing the second handle element on the hand tool.
  • the second handle element In the locking position, the second handle element is clamped between the engagement section and the tool bearing, and the handle is fixed to the hand tool.
  • the second handle element By actuating the clamping device, the second handle element is moved in the direction of its longitudinal axis Hand tool moves until the second handle element, in particular its first fixing means, is supported in the locking position on the tool bearing. Since the first handle element is firmly connected to the adjusting means, a relative movement occurs between the first and second handle elements. This relative movement, from the position (engagement position) in which the second clamping means rests on the engagement section, can correspond to the length of the engagement region or be smaller.
  • the force generated by actuating the clamping device preferably also clamps the adjusting device with the tool bearing. The handle is then firmly connected to the hand tool.
  • a position of the handle on the hand tool can therefore be changed quickly and reliably.
  • An electric hand tool within the meaning of the invention is a tool that is required to carry out a machine-assisted craft activity.
  • a user grips the hand tool with both hands, with one hand gripping an area of the housing of the hand tool and the other hand gripping the handle of the hand tool.
  • An electric hand tool can be powered by a stationary energy source, such as a power supply, a compressor or a fuel line, or a wireless energy source, such as a battery/accumulator or a fuel tank.
  • a stationary energy source such as a power supply, a compressor or a fuel line
  • a wireless energy source such as a battery/accumulator or a fuel tank.
  • other forms of drive are also possible and should be understood within the meaning of the invention.
  • a tool bearing in the sense of the invention represents any component of the machine tool that is functionally designed to be designed as a counter bearing with respect to the handle in order to absorb a tension for fixing the handle.
  • the tool bearing can be a component or component section that has or consists of a thermoplastic, a thermoset or a metallic material, with a material pairing and other types of materials also being possible.
  • An adjusting means in the sense of the invention represents a means that is functionally set up to mount the handle on the hand tool in a detachable or non-detachable manner, and by a relative movement of the adjusting means to the hand tool, the handle in at least two positions that are different from one another, in particular by translation and/or to adjust a rotation of the adjusting means.
  • the adjusting means can be designed in one piece or in two pieces or in several pieces.
  • a (first or second) handle element in the sense of the invention is an element that is functionally designed to direct a flow of force within the handle.
  • the first or second handle element can have or be made from a thermoplastic, a thermosetting plastic, a metallic material, or material pairs or combinations thereof.
  • the first and second handle elements can be made from different materials or from the same material.
  • a friction-reducing or a friction-increasing intermediate layer or a lubricant can be arranged on the contact surface between the first and second grip element.
  • connection partners are at least the adjusting means, the first and second handle elements, the tool bearing and the clamping means, which is set up to induce and release the frictional connection and the associated tensioning of the handle on the hand tool.
  • a tensioning means that can be actuated by a user in the sense of the invention therefore represents any component that is suitable for controlling a reversible and fixable, at least over a section rotation-free, relative movement between the first and second handle elements.
  • Preferred clamping means are selected from the group of possible clamping means comprising a screw connection, a quick-release device, a bayonet lock, and a latching arrangement.
  • the handle is not possible to fix the handle on the tool between the disengagement position and the engagement position, since in this position the second handle element is preferably not in contact with the tool bearing, and the handle is translational, in particular rotation-free, at least in a section between the disengagement position and the engagement position. is movable along the longitudinal axis of the handle and is movable relative to the tool bearing in particular via the adjusting means.
  • the first grip element is advantageously an elongated component, preferably an axle, with the engagement section in particular being or having a first clamping element on the elongated component or the axle, spaced from the second end of the component/the axle.
  • An axis represents a machine element that is suitable for supporting a component that rotates and can be moved on the axis.
  • a first or second clamping element represents a functional component of the clamping means, which is set up to induce a tension via a frictional connection in interaction with at least one further clamping element or during a relative movement of the two clamping elements.
  • suitable configurations of the first or second clamping element can be selected.
  • the second handle element is preferably an elongated component, advantageously a core element or a core of the handle.
  • a core in the sense of the invention represents a component that is suitable for being mounted on the first handle element, or an axis, so that it can move at least in sections in directions along the longitudinal axis of the handle.
  • the handle may include at least one handle housing portion surrounding the core.
  • the core element or core has a first end facing the hand tool and a second end facing away from the hand tool, wherein the first handle element/axis is preferably arranged inside the core along the longitudinal axis of the handle, so that the core is movable along the longitudinal axis of the handle on the first Handle element/axis is mounted.
  • the first handle element/the axis is preferably connected to the adjusting means in the area of the first end.
  • the tensioning means is preferably captively and preferably rotatably attached to the second end of the core.
  • a captive fastening represents a fastening that connects the clamping means to the second handle element/core element in a detachable or non-detachable manner.
  • the clamping means advantageously comprises a collar and guide channel, in particular in order to rotatably mount the clamping means relative to the second handle element.
  • a second clamping element is also preferably arranged in the clamping means. This is preferably arranged in a rotation-free manner in the clamping means and can be brought into engagement with the first clamping element of the axis in order to clamp the handle with the hand tool via a relative movement from the axis to the core. Furthermore, a first spring element is preferably arranged in the clamping means in order to return the second handle element from the engagement position P2 to the disengagement position P1.
  • the second clamping element is advantageously designed as an internal thread connected to the clamping means, which can in particular be manufactured integrally with a base part, in particular an end cap, of the clamping means.
  • the internal thread can be part of the clamping device or part of a component connected to the clamping device, or can in particular be screwed into the clamping element.
  • the clamping element can be arranged to be movable relative to the base part or not designed to be relatively movable.
  • the second clamping element is advantageously designed as an internal thread of a nut, in particular a hexagon nut.
  • the nut is preferably mounted movably in the direction along the longitudinal axis of the handle on a guide section of the clamping means arranged in the region of the second end of the first handle element/the axis.
  • the guide section has a smaller diameter than the inner diameter of the nut.
  • the clamping device uses a thread, it is advantageous to rotate the clamping device by less than 5, preferably less than 4, in particular less than 3 thread turns, in particular only approximately 2.5 thread turns, in order to transfer the handle from the engagement position along the engagement area into the locking position necessary. This means that when using the thread, the effort required to reliably fix the handle is minimal.
  • a special embodiment of the clamping device includes a multi-start thread. , with at least two threads. This increases the possibility of attaching the nut to the engagement section of the first handle element. For example, in the case of an engagement section that consists of a thread with two turns and a double pitch, the attachment options for the second clamping device are doubled and at the same time the number of revolutions for bridging the desired thread turns in order to attach or detach the handle from the machine is reduced , by half.
  • the first handle element/axle advantageously comprises an axial recess at its second end.
  • the axial recess is advantageously a blind hole.
  • the axial recess can also extend over the entire length of the first handle element/axle, with the axle being designed as a tube in this embodiment.
  • the clamping means preferably (also) comprises a recess, in particular a blind hole, the recess extending from an end face of the clamping means facing the first handle element/the axis extends along the longitudinal axis of the handle into the clamping device, or its base part.
  • the recess of the clamping means is preferably designed to accommodate the second end of the axle.
  • the clamping means preferably comprises a pin, the pin preferably extending from a base of the recess, and the axial recess of the axle engaging over the pin in at least one relative position of the first and second handle elements.
  • the handle adjustment device preferably has a spring element, in particular also referred to as a first spring element.
  • the spring element is in particular arranged to return the second handle element from the second position P2 to the first position P1.
  • the spring is relaxed, which was previously tensioned by the user by actuating the spring element using the tensioning device.
  • the spring element is arranged between the first handle element and the clamping means, preferably the spring element is arranged between the first handle element and the second handle element.
  • the spring element is arranged between the adjusting means and the second handle element.
  • the spring element is preferably arranged on the clamping means, in particular in contact with the clamping means or connected to it.
  • the effect of the (first) spring element of pushing the second handle element away from the hand tool in the longitudinal axis of the handle can also be achieved by arranging the spring element at a location other than on the clamping means.
  • the spring element exerts a force between the tool bearing and the second handle element, in particular between the adjusting means and the second handle element, in particular between the first handle element and the second handle element, whereby the second handle element, which is displaceable on the first Handle element is arranged, is pushed away from the hand tool.
  • a tensioning means has at least one spring element, in particular a coil spring.
  • the clamping means advantageously comprises a first spring element, wherein the diameter of a recess in the clamping means can be dimensioned such that the first spring element is arranged around the pin in the assembled state and is received in the recess, and wherein the first spring element is further inserted at its ends There is contact with the axis and the clamping device.
  • the spring travel of the first spring element and the recess are dimensioned such that a force acts on the axle starting from the clamping device via the first spring element.
  • the first spring element is functionally set up to push the core away from the hand tool in the longitudinal axis of the handle and to move it into the disengagement position in order to enable a simple adjustment of the handle in the circumferential direction of the longitudinal axis of the handle.
  • a spring element in the sense of the invention represents any element that is suitable for being sufficiently elastically deformed in practical use.
  • Spring elements can act either as a tension spring or as a compression spring.
  • Tension springs are loaded by pulling the ends apart, while compression springs are loaded by compressing the ends, which introduces a force into the spring.
  • Spiral springs for example, are suitable for this.
  • other geometric designs or materials, such as elastomer/rubber elements, are also possible.
  • the nut is biased against a stop via a second spring element, which is arranged between the nut and the clamping device, the stop being part of the second handle element/the core and being in contact with the end face of the clamping device . This ensures that the nut can be brought into engagement with the external thread (engagement section and first clamping element) of the first handle element/axle at any time.
  • the second spring element is advantageously tensioned against the base of the recess of the clamping means or a projection of the recess of the clamping means.
  • the second handle element advantageously comprises first fixing means and the adjusting means comprises complementary second fixing means, wherein the first fixing means and the second fixing means are set up to exert a positive connection in the locking position.
  • a fixing means in the sense of the invention therefore represents a section of the second handle element and a section of the adjusting means, the geometry of which is suitable for entering into a positive connection with a complementary geometry of the other component, and thereby blocking degrees of freedom of their relative movement.
  • the second fixing means have two support surfaces for this purpose, which are arranged in particular at an angle to one another, so that the first fixing means can form a positive connection with the second fixing means at two different angular positions.
  • the handle and the adjusting means are advantageously set up to be adjustable in at least two different angular positions relative to the tool bearing or to the tool longitudinal axis, in particular at an angle of preferably 45 degrees and preferably 90 degrees, so that one with respect to the tool longitudinal axis angular position of the handle can be achieved.
  • the tool storage advantageously comprises at least one recess, which is set up to exert a positive connection with the first fixing means of the second handle element in the locking position.
  • the recess is designed to block a movement of the handle directed in the circumferential direction of the tool's longitudinal axis, and only to enable movement of the handle in the longitudinal axis of the handle.
  • the first handle element is pivotally connected to the adjusting means in the region of the first end, such that the handle can be arranged by pivoting at an angle other than 90° in relation to the angle between its longitudinal axis of the handle and the longitudinal axis of the tool.
  • the recess of the tool bearing is designed in such a way that the pivoted handle is also blocked in the fixing position by a positive fit in a movement of the handle directed in the circumferential direction of the tool's longitudinal axis.
  • the first handle element advantageously further comprises limiting means, in particular a pin connected to the first handle element, which engages in an elongated hole in the second handle element and limits the axial displacement of the first handle element relative to the second handle element.
  • the pin can be pressed into the first handle element or connected using another joining method.
  • an elongated hole or a longitudinal recess can also be arranged on the first handle element and the pin on the second handle element.
  • the recess of the clamping means and the pin are advantageously designed such that the pin is received by the recess in the disengagement position and the engagement position. Tilting of the first and second handle elements when transferring from the engagement position to the disengagement position, and vice versa, can thus be prevented.
  • the adjusting means can be made from different materials or a combination of different materials.
  • the adjustment means is advantageously a ring made of plastic or a thin band made of metal or a fabric structure.
  • the adjusting means can be designed in one piece, in two pieces or in several parts, in particular to enable simple assembly on the hand tool.
  • the core advantageously comprises means for receiving handle housing sections, in particular handle shells.
  • the handles serve to protect the inside Electronics and/or mechanics acting on the handle and the operator gripping the handle as non-slip as possible.
  • the core advantageously also includes electronics for determining whether the handle is being held by an operator.
  • the handle has at least one means, for example an electrical line, which communicates with an electrical control device of the electric hand tool in order to exchange information, for example in the form of signals.
  • Fig. 1 shows a handle 10 of a handle adjustment device 100 mounted on a hand tool 16.
  • This includes a second handle element 24 and two handle shells 11 and is connected at its first end 12 to the adjustment means 32 via second fixing means 31.
  • the hand tool 16 is an angle grinder.
  • the adjusting means 32 is captively attached in the circumferential direction around the hand tool 16, the adjusting means 32 being rotatably mounted on the tool bearing 30 ( Figure 10 ).
  • Fig.2 shows a sectional view of an assembled handle 10 in a clamped state.
  • a clamping device 8 in the form of an end piece is arranged in a captively and rotatably mounted manner.
  • the handle shell 11 has a guide channel 27, into which a collar 28 of the clamping device engages.
  • the clamping device 8 is equipped with a function that makes it possible to change the position of the handle 10 quickly and reliably.
  • the second clamping element 6, designed as a hexagonal nut, is movably arranged in the clamping means 8 in the direction of the longitudinal axis 21 of the handle 10.
  • Fig.3 shows one half of the adjusting means 32 in the form of half a plastic ring.
  • the adjusting means can be designed in one piece or from several parts.
  • the adjusting means 32 has second fixing means 31, which are set up to form a positive or non-positive connection with the first fixing means 15, and thus to store the handle 10 in the fixing position not only against the tool bearing 30 but also against the adjusting means 32. See also 12 and 13 .
  • Fig. 4 shows a perspective view of a clamping device 8.
  • the clamping device 8 has a recess 17.
  • the recess extends from an end face 18 of the clamping device 8 into the clamping device in the form of a blind hole.
  • the recess 17 has a shaped section 22, which makes it possible to receive the second clamping element 6, for example a hexagon nut, and to fix it in a form-fitting manner in the radial direction.
  • the mold section 22 extends from the end face 18 into the recess 17.
  • the clamping means 8 has a collar 28, which is set up, in cooperation with a guide channel 27, to store the clamping means 8 on the second handle element 24 in a captive and rotation-free manner.
  • Fig.5 shows a sectional view of a clamping device 8.
  • a pin 20 is arranged, which holds the first spring element 9 ( Fig.2 ) can accommodate in the form of a compression spring.
  • the recess 17 has a shaped section 22, which makes it possible to accommodate the second clamping element 6 and to fix it in a form-fitting manner in the radial direction.
  • the tensioning means 8 has an area between the base 19 and the projection 23 that is set up to accommodate the second spring element 5 ( Fig.2 ) to store.
  • the pin 20, which receives the first spring element 9, and the receiving area in which the second spring element 5 is arranged are preferably designed in such a way that the spring elements 9 and 5 are supported (braced) and still movable in the clamping means 8.
  • Fig. 6 shows a perspective view of a first handle element 1.
  • the first handle element 1 is an axis, whereby the shape, size and material can be determined according to the requirements.
  • the axis is permanently, flexibly or detachably connected in the area of its first end 43 to the adjusting means 32, which is rotatably mounted on the machine 16, and extends through the handle 10.
  • the axis 1 has at its second end 41, which is arranged at a distance from the adjusting means 32, a recess 42 which engages over the pin 20 of the clamping means 8 and the first spring element 9.
  • the recess 42 and the pin 20 are designed so that interlocking is ensured both in the state in which the handle 10 is firmly or loosely connected to the hand tool 16, i.e. in positions P1 and P2. This ensures the functionality of the spring elements described below. This prevents the first spring element 9 from buckling.
  • the diameter of the recess 42 is dimensioned such that the first spring element 9, which is received by the pin 20, can also be received in the recess 42.
  • the spring travel of the first spring element 9 and the length of the recess 42 are dimensioned such that a force acts on the axis 1, whereby the clamping means 8 is moved in the direction away from the adjusting means 32. Since the clamping means 8 is positively connected to the handle shell 11 in the axial direction, the handle 10 is moved away from the hand tool 16 due to the spring force of the first spring element 9.
  • the core 24 is movably mounted on the axis 1 and, in the exemplary embodiment shown, comprises an electronic circuit which is set up to detect gripping of the handle.
  • the axis 1 preferably has a first clamping element 3 at its second end 41 as an engagement element, which in the exemplary embodiment shown is designed in the form of a thread.
  • the thread 3 is arranged at a distance from the second end 41 of the axis 1.
  • the thread 3 is further positioned on the axis 1 so that in the disengagement position, in which the handle 10 is loosely, i.e. not firmly, connected to the hand tool and thus the first spring element 9 is relaxed, the threads pass through the second clamping element 6, in the form of a nut in the exemplary embodiment shown, cannot be gripped.
  • the axis 1 has a guide section 4 following the thread 3 in the direction of the second end 41, which has a slightly smaller diameter than the inner diameter of the second clamping element, the nut 6.
  • the distances, longitudinal mobility of the handle 10 and the positioning of the thread 3 on the axis 1 are dimensioned such that the handle 10 can be clamped quickly and easily to the hand tool by slightly turning the clamping device 8. For this purpose, it is sufficient if there is a slight overlap of, for example, 2.5 thread turns between the nut 6 and the thread 3.
  • Fig.7 shows a perspective view of a second handle element 24 in the form of a core.
  • the core 24 has recesses 25 and projections 26 which interact with complementary recesses and projections of the handle shell 11.
  • the handle shell 11 can be connected to the core 24 in a stationary manner.
  • the handle shell 11 is secured with standard screws.
  • the handle shell 11 can be formed from two shell halves.
  • the core 24 has a stop 7, against which the nut 6 rests constantly due to the preload of the second spring element 5.
  • Fig.8 shows the side view of a handle 10 with the handle shell removed on one side with a view of a second handle element 24.
  • the handle 10 has at its first end 12 first fixing means 15, which are used for storage, among other things an adjusting means 32 and the tool bearing 30 are formed.
  • the adjusting means 32 has second fixing means 31, for example a flange, the tool bearing 30 has recesses 33 which cooperate with the first fixing means 15, and in the state (position P3) in which the handle 10 is firmly connected to the machine, a positive connection form.
  • the first fixing means 15 and second fixing means 31 as well as the recesses 33 can be recesses and projections in the form of a tongue and groove.
  • the second fixing means 31 are part of the adjusting means 32 and are arranged on it.
  • the adjusting means 32 is rotatably mounted on the hand tool 10.
  • the movement path of the handle 10 along the longitudinal axis 21 of the handle is limited by a pin 2 which is pressed into the axis 1.
  • This pin 2 runs in an elongated hole 13 of the core 24, the length of the elongated hole 13 determining the maximum path of longitudinal mobility of the handle 10, in particular the position P1.
  • Fig.9 shows a sectional view of a clamping device 8 in the assembled state.
  • a second spring element 5 in the form of a compression spring is held on the guide section 4.
  • the compression spring 5 is arranged with a preload between the base 19 of the recess 17 of the clamping means 8, or alternatively between the projection 23 of the recess 17 and the nut 6.
  • a force acts on the nut 6 in the longitudinal direction of the axis 1 and moves the nut 6 up to a stop 7 which is arranged on the core 24.
  • the stop 7 is part of the core 24 and is in contact with the end face 18 of the clamping device 8.
  • the nut 6 is therefore always pretensioned by the compression spring 5 along the longitudinal axis of the axis 1 in the direction of the hand tool.
  • Fig.10 shows a side view of the handle adjustment device 100.
  • the axis 1 is clamped to the core 24 (not shown) and the adjustment means 32 on the tool bearing 30.
  • the tool bearing 30 also has recesses 33 for the positive connection of the first fixing means 15.
  • Fig.11 shows a top view of the handle adjustment device 100 with different positions of the handle 10.
  • the handle 10 can be attached via the adjustment means 32 at three positions offset by 90° at a 90° or 45° angle in relation to the tool longitudinal axis 34.
  • the distance between the positions of the handle 10 can deviate from 90 ° and be arranged in angular positions that differ from one another. Different angles with respect to the tool longitudinal axis 34 are also possible. This requires a corresponding arrangement of the recess 33 and a corresponding shaping design (angular arrangement of the handle 10 in relation to the tool longitudinal axis 34) of the recess 33 on the tool bearing.
  • the positioning of the handle on a machine is not limited to the in Figure 11 4 positions shown. Depending on the number and arrangement of the recess 33 on the tool bearing 30, several positions, for example 6 or 8, can be provided for the handle positioning.
  • Fig.12 shows another sectional view of an assembled handle 10 in a clamped state.
  • the first fixing means 15 and the second fixing means 31 form a positive connection and store the handle 10 in the clamped state on the hand tool 16.
  • Fig.13 shows a further sectional view of an assembled handle 10 in a clamped state, with the handle, or the longitudinal axis of the handle, being attached at a 45° angle with respect to the longitudinal axis 34 of the tool.
  • the first fixing means 15 rest on a V-shaped section of the second fixing means 31 of the adjusting means 32.
  • Fig.14 shows further sectional views of a handle 10, in particular at the top in the locking position and at the bottom in the disengagement position.
  • the upper illustration shows the handle 10 in the locking position P3, with the first fixing means 15 being in contact with the adjusting means 32.
  • the lower illustration shows the handle 10 in the disengagement position P1, which is displaced along the longitudinal axis 21 of the handle by a distance x - corresponding to the difference between P1-P3, in particular P2 being approximately equal to P3.
  • the first fixing means 15 is spaced from the adjusting means 32 and the handle 10 can therefore be moved into at least one further position.
  • the first spring element 9 pushes the handle 10 away from the hand tool 16 in the release position relative to the hand tool 16 and thus enables easy adjustment without the handle 10 having to be detached from the hand tool 16.
  • the first 3 and second 6 clamping elements come into contact.
  • the clamping device 8 enables the handle 10 to be clamped on the hand tool 16.
  • the second clamping device 6 moves along an engagement area relative to the first clamping device 3 until the handle 10 is firmly fixed on the hand tool 16.
  • Figure 15 shows a handle adjustment device 100' according to an exemplary embodiment of the invention, which is used for the relative adjustment of a handle 10' in the circumferential direction U about a tool longitudinal axis A of an electric hand tool, in particular an angle grinder, and for fixing the handle 10' on a tool bearing 30' of the hand tool serves.
  • the components of the handle adjustment device 100' correspond analogously to the respective components of the handle adjustment device 100, each according to the use of the same number in the reference number of two analog components X and X'. While in the handle adjustment device 100, in which the locking position P3 corresponds to the engagement position P2 (cf. Fig. 14 ), in particular approximately or exactly corresponds, the position P2 in the handle adjustment device 100 'deviates from the position P3 - but this is not mandatory and can also be P2 equal to P3, in particular P2 almost equal to P3 or exactly equal to P3.
  • the distance d1 between P1 and P2, measured along the longitudinal axis G of the handle is preferably greater than the distance d2 between P2 and P3, in particular d1>d2*f, where f is preferably 2, 3, 4, 5, 6, 8, 10, 15, 20, 50.
  • the invention can also be implemented with d1 ⁇ d2.
  • a fixing means 15, 15' of the second handle element 24, 24' it is preferred and possible for a fixing means 15, 15' of the second handle element 24, 24' to rest against the tool bearing 30, 30' in the engagement position P2.
  • the handle adjustment device 100 'the Figure 15 is shown in the three positions P1, P2 and P3, correspondingly in the figure sections i), ii) and iii).
  • the spring 9 ' which is compressed and tensioned starting from P1 to P2 and P3, a restoring force is exerted, which returns the second handle element 24 starting from the position P2 to the position P1.
  • the handle adjustment device 100' has an adjustment means 32', which can be stored in the circumferential direction (U) around the tool's longitudinal axis (A, 34) on the tool bearing 30' and can be connected to the hand tool, in particular in that the adjustment means 32' partially covers a housing section of the hand tool , in particular in a circumferential angle range a that encompasses 0 ⁇ a ⁇ 360.
  • the adjusting means 32 ' can be in one piece or in several parts, in particular when mounted on the hand tool Adjusting means 32 'several components of the adjusting means can be joined together.
  • the handle adjustment device 100' has the handle 10', which has a first handle element 1' with a first end 43' facing the hand tool, which is connected to the adjusting means 32', and a second end 41' facing away from the hand tool.
  • the handle adjustment device 100' has a second handle element 24', which is displaceable along a handle longitudinal axis G on the first handle element 1' from a disengagement position P1 to an engagement position P2.
  • the handle 10' In the disengagement position P1, the handle 10' is movably arranged on the tool bearing 30', in particular arranged along the circumferential direction U of the tool bearing 30'.
  • the second grip element 24' can be moved into an engagement region by engaging the second clamping element 6' in an engagement section 3' of the first grip element 1'.
  • the second handle element 24' is supported on the engagement section 3' within the engagement area in the direction along the handle's longitudinal axis G.
  • the second handle element 24' is blocked against displacement in at least one direction along the longitudinal axis G of the handle. This occurs through the interaction of the second clamping means 6' with the engagement section. An abutment is created.
  • the handle 10' has a tensioning means 8' that can be actuated by a user, by actuating which the second handle element 24' can be moved into a locking position P3 in the engagement area relative to the first handle element 1', in which the second handle element 24' is between the engagement section 3 'and the tool bearing 30' is clamped and the handle 10' is fixed to the hand tool.
  • the clamping means 8', as well as the clamping means 8 of the handle adjustment device 100, which is designed as a rotary thread cap, can also be designed differently in order to hold the second handle element in the locking position between the engagement section and To brace the tool bearing. Possible alternatives are in the Figures 16a, 16b and 16c shown.
  • Figure 16a shows the clamping device 8a, which here has a sleeve or cap as a base part 52 or is essentially formed from it, which is equipped with a positive guide 50.
  • This sleeve or cap 8a is preferably rotatable about the longitudinal axis G of the handle and is preferably connected to the second handle element 24 '(24) in a non-displaceable manner in the direction along the axis G.
  • the first handle element 1 ' is connected, in particular firmly connected, to a sliding block 51, which engages in the positive guide 50.
  • the clamping device 8a is actuated by rotating the sleeve/cap, with the positive guide 50 pulling the sleeve/cap along the sliding block 51 in the direction of the tool bearing 30'.
  • the second handle element 24' is clamped between the sliding block 51, which serves as an engagement section 3', and the tool bearing 30', whereby the handle 10' is fixed.
  • the positive guide 50 (second clamping element 6a) and the sliding block 51 (first clamping element) thus form a bayonet lock.
  • a compression spring 9' is preferably provided between the first handle element 1' and the clamping means 8a connected to the second handle element 24', which is tensioned during actuation (rotation for fixing P2 to P3 in the engagement area, indicated by the lightning symbol). , and by means of which the clamping means 8a with the second handle element can be reset from P2 to P3.
  • Figure 16b shows the clamping device 8b, which is designed as a quick-release arrangement. It has a base part 62, which is preferably connected to the second handle element 24 '(24) in a non-displaceable manner in the direction along the axis G relative to the handle axis G, or which in particular can also be formed integrally with the second handle element 24'.
  • the first handle element 1' has a pivot axis 61 for a quick-release lever 63, which is pivotally connected to the pivot axis 61 and thus forms part of the first handle element 1'.
  • the quick-release lever 63 forms a first clamping element or an engagement section 3 '.
  • Running outer surface 64 of the quick-release lever engages in the base part 62 and can be placed on a stop surface 65 (second clamping element 6b) of the base part.
  • the base part 8b is moved from P1 to P2 and from there into a locking position by the quick-release lever 63 engaging in the base part and the outer surface 64 resting on the stop surface 65 under the pressure imparted by the compression spring 9 '.
  • the clamping means 8b is actuated by the user pivoting the quick-release lever, and the eccentrically extending outer surface 64 presses the base part 62 connected to the second handle element 24 'in the direction of the tool bearing 30', with the compression spring 9' also being pressed. is further compressed.
  • the second handle element is clamped between the outer surface 64, which serves as an engagement section 3', and the tool bearing 30', whereby the handle is fixed.
  • the clamping means is thus formed by means of a quick-release lever. Similar clamping devices can be implemented using a similar eccentric arrangement.
  • Figure 16c shows the clamping device 8c, which here has a sleeve or cap as a base part or is essentially formed from it, which is equipped with a latching arrangement.
  • This sleeve or cap 8a is connected to the second handle element 24 '(24) in a non-slidable manner in the direction along the axis G, but can also be connected to it in a movable manner.
  • the first handle element 1 ' has a sawtooth rail or rod 71, which forms a first clamping element, which extends along the handle's longitudinal axis G, and whose adjacent teeth each form an engagement section for the pin 70.
  • the base part 72 has the spring-loaded pin 70 (second clamping element 6c), which can engage in several positions, each of which is formed between two teeth of the sawtooth rail 71 when the pin 70 is displaced along the longitudinal axis G of the handle in the direction of the tool bearing, which is the case
  • the second handle element and the clamping device 8c are moved from position P1 to P2.
  • the pin engages in the first engagement section 3 ', it is secured against being reset in the direction G (away from the tool bearing).
  • a further displacement of the pin 70 in the direction of the tool bearing 30 ' which is caused by the If the ramp of the sawtooth is inclined relative to the pin longitudinal axis S, the second handle element 24' presses against the tool bearing 30' and further tensions the compression spring 9'.
  • the user grabs the pin 70, which is movable relative to the sleeve, and pulls it away from the sawtooth rail 71 along the pin's longitudinal axis S.
  • the compression spring 9' then moves the clamping means 8' with the second handle element 24' from the position P2 back to the position P1.
  • the typical use of a handle adjustment device (100; 100') according to the invention typically includes loosening, adjusting and reattaching the handle to the hand tool. It preferably includes the steps

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Harvester Elements (AREA)
EP22192336.0A 2022-08-26 2022-08-26 Dispositif de réglage de poignée Pending EP4327984A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22192336.0A EP4327984A1 (fr) 2022-08-26 2022-08-26 Dispositif de réglage de poignée

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22192336.0A EP4327984A1 (fr) 2022-08-26 2022-08-26 Dispositif de réglage de poignée

Publications (1)

Publication Number Publication Date
EP4327984A1 true EP4327984A1 (fr) 2024-02-28

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Family Applications (1)

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EP22192336.0A Pending EP4327984A1 (fr) 2022-08-26 2022-08-26 Dispositif de réglage de poignée

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EP (1) EP4327984A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112009001126T5 (de) 2008-05-09 2011-07-21 Milwaukee Electric Tool Corp., Wis. Hilfsgriff für die Verwendung an einem Elektrowerkzeug
EP2468461A2 (fr) * 2010-12-22 2012-06-27 HILTI Aktiengesellschaft Poignée supplémentaire, machine-outil manuelle, système
EP3020510B1 (fr) 2014-11-12 2018-01-31 Black & Decker Inc. Poignée latérale
EP2647473B1 (fr) 2007-11-02 2020-07-29 Robert Bosch GmbH Machine-outil manuelle et poignée
DE102020115087A1 (de) * 2020-06-05 2021-12-09 Festool Gmbh Handgriffvorrichtung für eine Hand-Werkzeugmaschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2647473B1 (fr) 2007-11-02 2020-07-29 Robert Bosch GmbH Machine-outil manuelle et poignée
DE112009001126T5 (de) 2008-05-09 2011-07-21 Milwaukee Electric Tool Corp., Wis. Hilfsgriff für die Verwendung an einem Elektrowerkzeug
EP2468461A2 (fr) * 2010-12-22 2012-06-27 HILTI Aktiengesellschaft Poignée supplémentaire, machine-outil manuelle, système
EP3020510B1 (fr) 2014-11-12 2018-01-31 Black & Decker Inc. Poignée latérale
DE102020115087A1 (de) * 2020-06-05 2021-12-09 Festool Gmbh Handgriffvorrichtung für eine Hand-Werkzeugmaschine

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