EP2196291A2 - Machine-outil manuelle - Google Patents

Machine-outil manuelle Download PDF

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Publication number
EP2196291A2
EP2196291A2 EP09175683A EP09175683A EP2196291A2 EP 2196291 A2 EP2196291 A2 EP 2196291A2 EP 09175683 A EP09175683 A EP 09175683A EP 09175683 A EP09175683 A EP 09175683A EP 2196291 A2 EP2196291 A2 EP 2196291A2
Authority
EP
European Patent Office
Prior art keywords
drive motor
hand
shaft
transmission device
housing
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.)
Withdrawn
Application number
EP09175683A
Other languages
German (de)
English (en)
Other versions
EP2196291A3 (fr
Inventor
Udo Panzer
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.)
Flex Elektrowerkzeuge GmbH
Original Assignee
Flex Elektrowerkzeuge 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 Flex Elektrowerkzeuge GmbH filed Critical Flex Elektrowerkzeuge GmbH
Publication of EP2196291A2 publication Critical patent/EP2196291A2/fr
Publication of EP2196291A3 publication Critical patent/EP2196291A3/fr
Withdrawn legal-status Critical Current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
    • B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B24B23/028—Angle tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B27/00—Other grinding machines or devices
    • B24B27/027—Other grinding machines or devices having a flexible shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/18—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like
    • B24B7/182—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like for walls and ceilings
    • 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
    • B25F5/008—Cooling 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

Definitions

  • the invention relates to a hand-held machine tool comprising a drive motor, a transmission device, which is torque-effectively coupled to the drive motor, and a shaft device for driving a tool, which is torque-effectively coupled to the transmission device.
  • From the DE 10 2005 059 180 A1 is a hand tool with a drive train and at least one decoupling known, in which the decoupling unit is arranged between two drive train units.
  • From the DE 10 2007 017 243 A1 is a machine tool, in particular hand tool, with a tool driving a drive motor and with an air guide, which is arranged in the housing of the machine tool and leads a drive motor sweeping air flow to the outside, known.
  • the air guide element has a functional portion which forms part of the outer circumferential surface of the machine tool.
  • a hand-held cleaning / grinding machine with a holding device is known, to which a coupling for connecting at least one first liquid line is arranged.
  • a coupling for connecting at least one first liquid line is arranged.
  • at least one second liquid line leads to a tool head.
  • a machine tool is known with a housing which accommodates an electric motor and a gear, wherein the motor has a guided in rotor bearings rotor which carries at one end a collector which is contacted via mounted in brush plates carbon brushes with a voltage source.
  • the housing consists of two longitudinal split housing shells.
  • the brush plates are part of a bearing bridge, which carries both the rotor bearing and the carbon brushes, wherein the bearing bridge in the guide region of the carbon brushes made of plastic.
  • a shift lever has an elastic resilient tongue which bears against the housing-fixed stop and holds the shift lever under spring force at a rest stop.
  • the invention has for its object to provide a hand-held machine tool of the type mentioned, which is usable for an operator in a simple manner.
  • the drive motor and the transmission device are each mounted floating in a housing device and that the drive motor and the transmission device are spatially separated, wherein between the drive motor and the transmission device, a shaft is arranged is connected to the drive motor and the transmission device.
  • the drive motor and the transmission device (which is driven by the drive motor) are mounted separately floating. This results in a vibration decoupling and the transmission of vibration and noise to the housing device is minimized.
  • the solution according to the invention can be realized for a large number of applications.
  • the hand-held machine tool may for example be a cleaning / grinding machine, for example in the form of a long-necked machine.
  • Further exemplary possibilities are training as a drill, hammer drill, angle grinder, eccentric or eccentric polisher, etc.
  • the shaft is a flexible shaft or comprises a flexible shaft area.
  • the shaft is basically a vibration coupling between the drive motor and the transmission device. If the shaft is flexible at least in a partial area, then this coupling is non-rigid and there is at least partial vibration decoupling. This helps to minimize the transmission of vibration and noise to the enclosure.
  • the shaft has at least two shaft elements, which are connected by at least one elastic coupling torque-effective.
  • the at least one elastic coupling causes the coupling between the drive motor and the housing device via the shaft is non-rigid. This results in at least partial vibration isolation.
  • the at least one elastic coupling is for example a torsional coupling or comprises a torsional coupling. It can also include a rubber element.
  • the at least one elastic coupling can also be a universal joint (cardan joint) or comprise such a universal joint.
  • a plurality of elastic elements is provided for floating storage.
  • the elastic elements are formed for example by rubber buffer.
  • the drive motor and the housing device and the elastic elements are supported on the housing device.
  • a floating storage is achieved in a simple manner. If a plurality of discrete elastic elements is provided, then in floating storage, the support surface is reduced in comparison to a full-surface support and thereby can minimize the vibration transmission and noise transmission to the housing means.
  • the transmission device drives a fan device for the drive motor.
  • the fan device can also be stored floating directly or indirectly via the housing device.
  • a channel for the cooling air of the drive motor is arranged between the fan device and the drive motor.
  • the shaft is positioned in the channel. This results in a simple and compact design.
  • the channel is arranged in a handle or in a handle region. This makes it possible to use the separation of the drive motor and transmission device to form a handle.
  • the transmission device can be designed in different ways.
  • a tool can be coupled directly to the transmission device at a corresponding "torque output".
  • the transmission device may for example be designed as a reduction gear, which reduces the speed of the drive motor for a tool.
  • the transmission device may be designed, for example, as an eccentric gear.
  • the housing device forms a common housing for the drive motor and the transmission device. This results in a compact construction, wherein the number of components for the hand-held machine tool can be kept low.
  • An embodiment of a hand-held machine tool according to the invention is a hand-held cleaning / grinding machine.
  • the hand-held cleaning / grinding machine can be designed in conjunction with a suitable tool as a pure cleaning machine, as a pure grinding machine or as a combination machine, which can be used both as a cleaning machine and as a grinding machine.
  • a finger penetration area In particular, below a handle is a finger penetration area. This allows an operator to hold the cleaning / grinding machine securely on the handle.
  • a fan device and / or the transmission device are arranged closer to a tool head than the drive motor. This results in a simple serial structure of the drive components of the hand-held cleaning / grinding machine.
  • the drive motor in particular drives a shaft device, which is coupled to the tool head and drives a tool. It can be interposed one or more gearboxes.
  • the shaft device comprises, for example, a flexible shaft.
  • the drive motor and the fan device and / or the gear device are arranged in the housing device. This results in a simple structure and the drive components can be effectively protected from environmental influences. It is basically possible that the drive motor and the fan device and / or transmission device are arranged in separate housings, wherein a fluid-effective Connection is given through the channel, or arranged in a common housing.
  • the housing device is associated with a through opening below the handle. This provides a finger penetration area. This allows an operator to hold the cleaning / grinding machine on the handle, in which case the hand are oriented transversely to an extension direction of the holding device.
  • the housing device has a first housing region in which the drive motor is arranged, and has a spaced second housing region in which the fan device and / or the transmission device are arranged, wherein the first housing region and the second housing region are connected by the handle are.
  • the housing device has a lower shell and an upper shell seated on the lower shell. This results in a simple and compact design. The number of components can be minimized.
  • the housing device is arranged on a first tubular element.
  • a suction channel for grinding dust and the like can be realized via the first tubular element.
  • a rod element is slidably guided lockable. This results in a kind of telescopic guide and the length of the holding device can be adapted by a user to the particular application. This results in a variable usability of the hand-held cleaning / grinding machine.
  • a handle is arranged on the first tube element or on a rod element on or in the region of an end facing away from the tool head.
  • a user can hold the cleaning / grinding machine. With one hand he can grasp the handle and with the other hand he can hold the cleaning / grinding machine by the handle.
  • the drive motor lies between the hands, so that a fatigue-free work is realized.
  • the handle is at least approximately in line with the handle. As a result, the hand-held cleaning / grinding machine can be used fatigue-free.
  • a suction channel is formed in the first tube element, which is fluidly connected to the tool head.
  • grinding dust and the like can then be sucked from a tool-working region on a workpiece.
  • connection for a vacuum cleaner is arranged at or in the vicinity of an end of the first pipe element facing away from the tool head or a rod element guided in the first pipe element. This results in an effective extraction of grinding dust and the like.
  • a shaft is guided by the handle, which is coupled torque-effectively to the drive motor.
  • the fan device can be driven by the shaft (directly or indirectly) or a torque-effective coupling of the transmission device to the drive motor is produced.
  • the drive motor and the transmission device can also decouple vibration, so that with appropriate storage of the drive motor and the housing means the vibration transmission and noise transmission is minimized to a housing device.
  • the shaft drives the fan device. It can be provided a direct drive or via a transmission device.
  • the shaft is coupled to the transmission device, which via a corresponding discharge element drives the fan device and in particular a fan wheel, by which in turn the drive motor is acted upon by a cooling air flow.
  • the transmission device and the fan device are arranged in the same housing area. This results in a compact design.
  • the fan device is coupled to the transmission device and driven by this.
  • the transmission device is designed in particular as a reduction gear. This allows a high speed of the drive motor to be set to a suitable tool speed.
  • the transmission device usually has a relatively high weight. The arrangement close to the handle allows volunteers work to be achieved when the handle is held.
  • a shaft device for driving a tool is guided at least partially in a second tubular element which is arranged on a housing device for the fan device and / or the transmission device.
  • the wave device is protected from the outside.
  • the second tubular element is preferably part of the holding device and also serves, for example, for holding the tool head.
  • the term “second pipe element” does not necessarily mean that a "first pipe element” also exists.
  • the “second pipe element” may also be the only or "first” pipe element.
  • the second tubular element is spaced parallel to a first tubular element. At least a portion of the shaft means is guided in the second tubular element. In the first tubular element, a suction channel is formed. Due to the parallel spaced arrangement results in a simple compact design with stable design of the holding device.
  • the second tubular element is at least approximately in line with the handle. As a result, a user can easily hold the cleaning / grinding machine on an outer contour of the second tubular element. This results in a variety of grip options for an operator.
  • the second tubular element is formed with a linear extent. As a result, a long-necked machine can be realized in a simple manner.
  • an arcuate element is arranged on the second tubular element, on which the tool head is mounted in a direction transversely to the extension direction of the second tubular element at a distance from the second tubular element.
  • the arch element is a holding element for the tool head.
  • the curved element has an area which is arranged parallel to the second tubular element, wherein a bearing device for the tool head is seated in this area. This makes it easy to pivot the tool head about at least one axis.
  • the arch element forms a 180 ° arc.
  • a bearing device for the tool head is arranged at a greater transverse distance from the second pipe element than to the first pipe element.
  • the tool head is also arranged in the transverse distance to the first tubular element.
  • a suction channel crosses the arch element.
  • a free rotatability of a tool holding device can be realized, wherein the suction channel can be guided at a distance from the drive motor.
  • the shaft device is guided by the second tube element through a third tube element to the tool head.
  • the wave device is arranged protected.
  • a partial region of a suction channel can be provided via the third tubular element.
  • the third tubular element forms a 90 ° bend.
  • the third pipe element does not necessarily have to be rigid, but can be made by means of a flexible hose.
  • a suction channel is formed in the third tubular element, which is fluidly connected to a suction chamber of a first tubular element.
  • the suction channel in the third tube element surrounds the shaft device. This makes it possible, for example, to connect the suction channel in the same area and in particular a central region of the tool head to this. In turn, this ensures that when a tool holding device can be rotated on a tool head, it can not abut on a suction hose or the like.
  • a suction channel which comprises a suction chamber formed in the third pipe element, has a region which lies between a suction chamber in the third pipe element and a suction chamber in the first pipe element. This area establishes the connection. About him grinding dust and the like can up to one end of the cleaning / grinding machine, which faces away from the tool head, dissipate and in particular aspirate.
  • the area is a 180 ° bend. It advantageously intersects an arch element which is arranged in a second tubular element.
  • a housing is arranged on the holding device, through which a shaft device is performed and on which a first tubular element and a second tubular element sit, which are connected to a housing device for the drive motor, and on which a third tubular element is seated, which is connected to the tool head.
  • connection for a suction duct on the tool head surrounds a shaft device.
  • the connection advantageously opens to the tool head in a central region of the tool head.
  • an axis of the suction channel at the connection to the tool head is at least approximately coaxial with a rotation axis of the shaft device in the region of the coupling to the tool head.
  • a tool holding device can be releasably fixed in the tool head, which holds a tool. It is in this context on the EP 1 719 581 A1 directed.
  • the drive motor is an electric motor.
  • the hand-held machine tool can be formed, for example, with low weight.
  • a hand-held cleaning / grinding machine is designed for example as a long-necked machine.
  • a distance between the drive motor and the tool head in an extension direction of the holding device is at least 0.3 m and preferably at least 0.5 m.
  • An embodiment of a hand-held machine tool is a cleaning / grinding machine.
  • cleaning / grinding machine means that the machine with appropriate tool is designed purely as a cleaning machine, or purely designed as a grinding machine, or is a combination machine, which is operable with a cleaning tool or with a grinding tool.
  • FIGS. 1 to 5 and 7 to 9 An embodiment of a cleaning / grinding machine according to the invention is a long-neck machine, which in the FIGS. 1 to 5 and 7 to 9 is shown and designated 10 there.
  • This cleaning / grinding machine comprises a holding device, which is designated as a whole by 12.
  • a tool head 14 On the holding device 12, a tool head 14 is pivotally supported.
  • a tool holding device 16 (FIG. FIGS. 4 and 5 ) fixed or releasably fixable.
  • the tool holder 16 in turn holds a tool such as a grinding wheel or a brush tool.
  • the cleaning / grinding machine 10 comprises a first tubular element 18, which is straight and extends linearly in an extension direction 20.
  • the extension direction 20 is an extension direction of the holding device 12.
  • the first tube element 18 is a hollow tube with an interior 22.
  • a rod element 24 is guided in the interior space 22.
  • the rod member 24 itself is again formed as a hollow tube with an interior 26.
  • connection 28 for a vacuum cleaner is arranged.
  • the rod element 24 is displaceably guided in the inner space 22 in a direction parallel to the extension direction 20 (indicated by the double arrow 30 in FIG FIG. 1 ).
  • a handle 32 In the region of the end of the rod member 24, in which the terminal 28 is arranged, sits on the rod member 24, a handle 32. This is designed as a transverse handle, which sits on a retaining element 34.
  • the holding element 34 is arranged parallel to the rod element 24 above the rod element 24 and the handle 32 extends on both sides away from the holding element 34 to the outside, so that the handle 32 has a width B (FIG. FIG. 2 ) in the transverse direction to the extending direction 20, which is larger than the width of the first tubular member 18 and the rod member 24 in this transverse direction.
  • the rod element 24 is detachably fixable with the first tubular element 18.
  • a corresponding fixing device 36 is provided.
  • the fixing device 36 is for example a clamping device.
  • the length of the cleaning / grinding machine 10 is between a first end 38, which lies on the handle 32, and a second end 40, which is located on the tool head 14, adjustable.
  • the cleaning / grinding machine 10 can be easily adapted by a user to a specific application.
  • the handle 32 is formed so that a user can grasp it with his hand, wherein at least approximately the hand are oriented parallel to the extension direction 20.
  • a suction channel 42 is formed which, as will be explained in more detail below, leads to the tool head 14 and is in fluid-effective connection therewith ,
  • the housing device 44 comprises a lower shell 46, to which the first tubular element 18 is fixed, and an upper shell 48, which can be fixed to the lower shell 46.
  • the lower shell 46 is formed so that the components described below can be fixed to it.
  • the upper shell 48 is designed as a housing cover.
  • the housing device 44 is formed in the described embodiment as a common housing for an electric drive motor 50, a transmission device 52, a fan device 54 and a shaft 56 between the drive motor 50 and the transmission device 52.
  • the housing device has a first region 58 in which the drive motor 50 with stator and rotor is arranged. To the rotor of the drive motor 50, the shaft 56 is rotatably coupled.
  • the housing device 44 further has a second housing region 60, which is spaced from the first housing region 58. In the second housing portion 60 sits the transmission device 52, which is torque-effectively coupled to the shaft 56.
  • the fan device 54 in turn is connected to the transmission device 52 docked. From the transmission device 52, a torque is "discharged" to drive a fan 62 of the fan device 54.
  • a channel 64 is arranged, which is bounded on one side (in the direction of the first end 38) by the drive motor 50 and to the other side (towards the second end 40) by the fan 62 is limited. Through the channel 64, a cooling air flow generated by the fan device 54 can flow to the drive motor 50 and flow around it.
  • the housing device 44 has ventilation openings 66, which are formed in particular in the form of ventilation slots. Such ventilation openings 66 are arranged on the first housing region 58 and the second housing region 60, in order to allow a corresponding air flow within the housing device 44 for cooling the drive motor 40.
  • the shaft 56 is guided in the channel 64 from the drive motor 50 to the transmission device 52.
  • the channel 64 is formed in a handle 68, which is oriented parallel to the first tube member 18 and has a correspondingly ergonomically shaped outer contour 70.
  • the handle 68 is associated with a finger penetration region 72, which lies below the handle 68 between this and the first tubular element 18.
  • the finger penetration region is formed by a through opening 74 in the housing device 44, wherein the opening 74 is surrounded by a wall 76 which separates an interior of the housing device 44 from the outside space.
  • the upper shell 48 and the lower shell 46 are simply connected in a coherent manner for this opening 74.
  • the handle 68 and the finger penetration area 72 formed over the opening 74 are corresponding to the dimensions of the human hand dimensioned.
  • An operator can grasp the handle 68, in which case the hand is oriented transversely to the extension direction 20.
  • the fingers penetrate the finger penetration area 72.
  • the handle 68 is aligned parallel to the first tube member 18 in a transverse direction Q spaced from the first tube member 18.
  • a switch 80 for switching on and off of the drive motor 50 is arranged on a top side 78 of the first housing portion 58.
  • an electric cable 59 via which the electric drive motor 50 can be supplied with electrical energy, leads away in the direction of the first end 38 (FIG. FIGS. 7 to 9 ).
  • the second housing portion 60 is connected to the first tube member 18.
  • first housing region 58 it is also possible for the first housing region 58 to be connected to the first tubular element 18.
  • rod element 24 it is possible for the rod element 24 to be mounted in a front region in the first tubular element 18 and to be displaceably mounted in a middle region in the housing device 44.
  • first housing portion 58 and the second housing portion 60 are connected in the region of the first tubular element 18 and the rod element 24 by a bridge element 82.
  • the bridge element 82 increases the stability of the housing device 44.
  • the first tube element 18 sits on the bridge element 82, or the rod element 24 is guided in the bridge element 82.
  • the transmission device 52 includes, for example, a reduction gear, which reduces the speed of the drive motor 50.
  • a shaft device 84 is coupled, which leads to the tool head 14 and the tool holder 16 drives.
  • a second tube element 86 is connected in parallel with the housing device 44 to the first tube element 18.
  • This second tubular element 86 has an inner space 88, in which a partial region of the shaft device 84 is guided.
  • the second tube member 86 is at least approximately on a same line 90 as the handle 68. On an outer periphery 92, an operator can grasp the cleaning / grinding machine 10. By positioning the second tube member 86 on the at least approximately equal line 90 as the axis for the handle 68, holding for an operator is facilitated.
  • the handle 32 is also at least approximately on the line 90th
  • the second tube element 86 is designed in particular as a hollow tube.
  • a bow member 94 is connected directly or indirectly.
  • the arch member 94 is integral with the second tubular member 86.
  • the arch member 94 is formed as a 180 ° arc having a first portion 96 which merges into the second tubular member 86, a second portion 98 oriented parallel to the second tubular member 86 a distance in the transverse direction Q to this, wherein this distance is greater than the distance of the first tubular element 18 to the second tubular element 86, and an intermediate region 100, which connects the first region 96 and the second region 98.
  • a holding fork 102 with a first web element 104 and a second web element 106 is seated on the second region 98 of the bow element 94.
  • a bearing device 108 is arranged, via which the tool head 14 is pivotably mounted about a pivot axis 110.
  • the bearing device 108 in this case has a first bearing element 112a, which is arranged on the first web element 104, and a second bearing element 112b, which is arranged on the second web element 106.
  • the pivot axis 110 is oriented transversely to the extension direction 20.
  • the tool head 14 is pivotable about at least one further pivot axis.
  • Another pivot axis is, for example, perpendicular to the pivot axis 110.
  • the second tube element 86 and the curved element 94 are rigid.
  • the first tube member 18 is also rigid.
  • the shaft device 84 is guided from the second tubular element 86, starting from the region of the curved element 94, through a third tubular element 114 to the tool head 14.
  • the first tube element 18 and the second tube element 86 are part of the holding device 12 and have holding functions.
  • the bow member 94 and the second tube member 86 hold the tool head 14.
  • an operator may hold the cleaning / grinding machine 10.
  • the third tubular element 114 has no special holding function and can be made flexibly bendable or tubular. In a corresponding inner space 116, the shaft device is guided with a corresponding subregion 118.
  • the third tubular element 114 is designed such that, with every possible pivoting position of the tool head 14 relative to the holding device 12, the guidance of the shaft device within the third tubular element 114 is without wall contact.
  • the shaft element 84 is encased in the subregion 118.
  • the interior 116 is part of the suction channel 42.
  • the shaft device 84 comprises, for example, a first shaft element 120, which is designed to be rigid, for example. In the partial area 118, the shaft device 84 is designed to be flexible. The first shaft member 120 is connected to the portion 118. A sleeve 124 may be arranged on a corresponding connection region 122, which prevents the partial region 118 of the shaft device 84 (the flexible shaft element) from being pulled out of the connection region 122.
  • the third tube element 114 is formed as a 90 ° arc.
  • a channel 126 leads in the manner of a 180 ° bend to the first tubular element 18 and opens into its interior space 22.
  • the suction channel 42 is formed which forms a fluid-effective connection between the connection 28 and the tool head 14 causes. This makes it possible to remove grinding dust and the like from a processing area on the tool head 14.
  • a shaft member 128 is arranged, which is rotatable with a corresponding drive from the drive motor 50 about a rotation axis 130.
  • the shaft member 128 is operatively connected to the shaft assembly 84.
  • the shaft element 128 lies in a central region of the tool head 14. At least approximately, the rotation axis 130 forms a central axis of the tool head 14.
  • the suction channel 42 opens via the interior 116 of the third tube element 114 into a corresponding central region 132 of the tool head.
  • a corresponding suction chamber surrounds the shaft device 84 in its connection to the tool head 14 and is arranged in the central region 132.
  • the suction channel 42 intersects with the channel 126, the sheet member 94. This ensures, if as a tool holder 16, for example, a corner grinder is used, a free rotation.
  • a housing 134 with a lower shell 136 and an upper shell 138 is arranged on the housing 134.
  • the second tube member 86 is fixed.
  • the third tube member 114 is fixed to the housing 134.
  • the first tube element 18 is fixed to the housing 134.
  • the connection region 122 lies within this housing 134.
  • the connection of the channel 126 with the first tube element 18 and the third tube element 114 likewise takes place within the housing 134.
  • a corresponding tool holding device 16 may comprise a reduction gear.
  • Corresponding tool holding devices are in the EP 1 719 581 A1 described, to which reference is expressly made.
  • a corresponding tool holding device comprises in particular a fixing device for releasably fixing to the tool head 14 and a shaft for driving a held by the tool holder 16 tool which is rotatably coupled to the shaft member 128 of the tool head 14.
  • a corresponding tool holding device can have a rotation axis coaxial to the rotation axis 130 or a parallel spaced rotation axis.
  • the tool holding device has a triangular outer contour.
  • Such a tool holding device is used in particular for processing corners and the like. It is in this context in particular on the FIGS. 5 to 8 and the corresponding description in the EP 1 719 581 A1 directed.
  • the distance of the drive motor 50 to the tool head 14 in the extension direction 20 is fixed.
  • the length of the holding device 12 between the handle 32 and the tool head 14 is about the displaceability of the rod member 24 in the first tube member 18 adjustable.
  • the distance between the drive motor 50 and the tool head 14 in the direction of extent 20 is in particular greater than 0.3 m and preferably greater than 0.5 m. This allows fatigue-free wall and ceiling work as well as tillage for an operator.
  • the drive motor 50 is, as in FIG. 6 shown schematically, floating in the housing device 44 mounted on the first housing portion 58.
  • a plurality of elastic elements 140 is provided.
  • the elastic elements are, for example, rubber buffers.
  • the drive motor 50 is supported on the lower shell 46 and the upper shell 48 via the elastic elements 140. This results in a vibration damping.
  • the transmission device 52 is also floatingly mounted on the housing device 44 in the second housing region 60 and thereby decoupled from the drive motor 50 mounted.
  • elastic elements 140 are provided (for example rubber buffer).
  • the transmission device 52 is supported on the lower shell 46 and upper shell 48.
  • the fan device 54 is preferably likewise mounted in a floating manner or connected to the transmission device 52 in such a way that it is mounted floating on the housing device 44 via this device.
  • the shaft 56 transmits the torque of the drive motor 50 to the transmission device 52. So it causes a torque coupling of Transmission device 52 to the drive motor 50. About this coupling vibrations can be transmitted in principle.
  • FIG. 9 In a third embodiment ( FIG. 9 ) is provided as a shaft 56, a rigid shaft 142, which provides for a rigid coupling of the drive motor 50 and the transmission device 52.
  • the shaft 56 is not rigidly configured to provide further vibration isolation between the transmission 52 and the drive motor 50.
  • FIG. 7 The flexible shaft 144, which is non-rotatably connected to the rotor of the drive motor 50 and rotatably connected to an "input" of the transmission device 52 and a torque-effective coupling between a drive motor 50 and the Transmitter device 52 has, due to its flexible design, a certain transverse mobility transversely to a spacing direction 146 between drive motor 50 and transmission device 52. (The distance direction 146 is parallel to the extension direction 20.) As a result, the torque-effective coupling between the drive motor 50 and the transmission device 52 is non-rigid and there is an at least partial vibration isolation.
  • the shaft 56 is formed in several parts with at least two shaft elements, which are connected to an elastic coupling.
  • a shaft 148 is provided which has a first shaft element 150a, a second shaft element 150b and a third shaft element 150c.
  • the first shaft member 150a is operatively connected to the second shaft member 150b via a resilient coupling 152.
  • the second shaft member 150b is connected to the third shaft member 150c via a second elastic coupling 154.
  • the first clutch 152 and the second clutch 154 may be formed differently.
  • the first clutch 152 and the second clutch 154 rubber elements.
  • the clutches can also be designed as torsional clutches. It is also possible, for example, that the couplings are designed as universal joints (cardan joints).
  • the inventive solution of the separation of the drive motor 50 and gear device 52 and their respective separate elastic mounting to a housing means 44 (wherein the drive motor 50 and the transmission device 52 may be stored in the same housing floating or stored in different housings) and the coupling via a shaft 56 of the transmission device 52 to the drive motor 50 causes increased vibration damping and thus improved operability by an operator.
  • the transmission of vibration and noise to the housing device 44 is reduced.
  • a region of the housing device 44, in which the shaft 56 is arranged, need not necessarily be designed as a handle, but it may, for example, a housing without opening 74 (Finger barntauch Scheme 72) may be provided.
  • the cleaning / grinding machine 10 functions as follows:
  • the appropriate tool holder 16 is fixed to the tool head 14 with tools.
  • the rotor of the drive motor 50 is rotated, which in turn causes rotation of the shaft 56.
  • the shaft device 84 is rotated, wherein in the formation of the transmission device 52 as a reduction gear, the shaft device 84 is rotated at a lower speed than the shaft 56th
  • the transmission device 52 drives the fan 62. Cooling air flows through the channel 64 and flows around the drive motor 50 for its cooling.
  • the handle 68 is heated.
  • An essential part of the weight of the cleaning / grinding machine 10 lies in the combination of drive motor 50 and gear mechanism 52. These are spaced from each other, wherein the handle 68 between the drive motor 50 and the transmission device 52 is located. Thereby, the cleaning / grinding machine 10 can be held over the handle 68 at or near its center of gravity. This causes a fatigue-free work. Holding on the handle 32 has essentially only a support function.
  • the various holding positions on the handle 32, the handle 68 and the outer periphery 92 of the second tube member 86 are in line. This provides a variety of different grip positions to a user.
  • the heaviest part of the cleaning / grinding machine 10, namely the drive motor 50, is when a user grips the handle 32 with one hand and the handle 68 with his other hand, between the hands.
  • the suction on the tool head 14 takes place centrally.
  • the suction channel 42 and the shaft device 84 run parallel to one another in a partial region (on the first tube element 18 and the second tube element 86).
  • the suction channel 42 crosses over the sheet element 94.
  • the central suction allows free rotation of the tool holder 16 or of a part of the tool holder 16 on the tool head 14. This allows a high Eckenzugnature for example by means of a tool, which on a tool holder according to FIG. 8 of the EP 1 719 581 A1 is held.
  • the drive motor 50 and the transmission device 52 are mounted floating in the housing device 44 separately from each other. As a result, there is a vibration decoupling of the drive motor 50 and the transmission device 52. There is a lower vibration transmission and noise transmission to the housing device 44th
  • the drive motor 50 and the gear device 52 are connected via the shaft 56, which is advantageously non-rigid, for example, by forming the shaft as a flexible shaft 144 or as a shaft having a plurality of shaft elements, with adjacent shaft elements having an elastic coupling are coupled.
  • the transmission device 52 may be adapted to a corresponding application.
  • the transmission device 52 may allow a reduced rotation of, for example, a shaft element to which a tool is to be coupled, or an eccentric movement.
  • the corresponding electric hand tool may for example be a drill, a hand-held grinding machine such as an orbital sander or the like, an angle grinder, etc.
  • the drive motor 50, the shaft 56 and the transmission device 52 are arranged in series.
  • the drive motor 50 is closest to the first end 38. From the drive motor 50, the shaft 56 leads to the transmission device 52. From there, the shaft device 84 leads to the tool head 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP09175683A 2008-12-10 2009-11-11 Machine-outil manuelle Withdrawn EP2196291A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200810063510 DE102008063510A1 (de) 2008-12-10 2008-12-10 Handgehaltene Werkzeugmaschine

Publications (2)

Publication Number Publication Date
EP2196291A2 true EP2196291A2 (fr) 2010-06-16
EP2196291A3 EP2196291A3 (fr) 2012-03-07

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ID=41667145

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EP (1) EP2196291A3 (fr)
DE (1) DE102008063510A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2366496A1 (fr) * 2010-03-19 2011-09-21 Festool GmbH Machine-outil manuelle dotée d'une poignée
CN102390027A (zh) * 2011-12-09 2012-03-28 傅月华 自吸尘轴式打磨机
CN102773778A (zh) * 2011-12-20 2012-11-14 赵建康 可调节角度的墙面打磨机
FR3007679A1 (fr) * 2013-06-28 2015-01-02 Bosch Gmbh Robert Dispositif de transmission de machine-outil portative et machine equipee d'un tel dispositif
US11867224B2 (en) 2021-01-27 2024-01-09 Black & Decker Inc. Locking mechanism for two telescoping poles of a power tool
US11931851B2 (en) 2019-10-23 2024-03-19 Black & Decker Inc. Pole sander

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014205563A1 (de) 2014-03-26 2015-10-01 Robert Bosch Gmbh Handgeführte Werkzeugmaschine
DE102016106561A1 (de) 2016-04-11 2017-10-12 Festool Gmbh Hand-Werkzeugmaschine, insbesondere Schleifmaschine

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DE4110826C1 (fr) 1991-04-04 1992-09-03 Fa. Andreas Stihl, 7050 Waiblingen, De
DE20000223U1 (de) 2000-01-10 2001-05-23 Robert Bosch Gmbh, 70469 Stuttgart Winkelschleifer mit Elektroantrieb
EP1719581A1 (fr) 2005-05-02 2006-11-08 Flex-Elektrowerkzeuge GmbH Ponçeuse motorisée à tête pivotable et porte-outil
DE102005059180A1 (de) 2005-12-12 2007-06-14 Robert Bosch Gmbh Handwerkzeugmaschine mit einem Antriebsstrang und einer Entkopplungseinheit
DE102007010303A1 (de) 2007-02-22 2008-08-28 Flex-Elektrowerkzeuge Gmbh Handgehaltene Reinigungs-/Schleifmaschine
DE102007017243A1 (de) 2007-04-12 2008-10-16 Robert Bosch Gmbh Werkzeugmaschine, insbesondere Handwerkzeugmaschine

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EP0829237A3 (fr) * 1996-09-12 1998-08-12 Ricana Ag Appareil de coupe avec outil de coupe sur un essieu moteur oscillant
US20080017689A1 (en) * 2006-05-31 2008-01-24 David Simonelli Fastener driving device
DE102006020172A1 (de) * 2006-05-02 2007-11-08 Robert Bosch Gmbh Handwerkzeugmaschine

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Publication number Priority date Publication date Assignee Title
DE4110826C1 (fr) 1991-04-04 1992-09-03 Fa. Andreas Stihl, 7050 Waiblingen, De
DE20000223U1 (de) 2000-01-10 2001-05-23 Robert Bosch Gmbh, 70469 Stuttgart Winkelschleifer mit Elektroantrieb
EP1719581A1 (fr) 2005-05-02 2006-11-08 Flex-Elektrowerkzeuge GmbH Ponçeuse motorisée à tête pivotable et porte-outil
DE102005059180A1 (de) 2005-12-12 2007-06-14 Robert Bosch Gmbh Handwerkzeugmaschine mit einem Antriebsstrang und einer Entkopplungseinheit
DE102007010303A1 (de) 2007-02-22 2008-08-28 Flex-Elektrowerkzeuge Gmbh Handgehaltene Reinigungs-/Schleifmaschine
DE102007017243A1 (de) 2007-04-12 2008-10-16 Robert Bosch Gmbh Werkzeugmaschine, insbesondere Handwerkzeugmaschine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2366496A1 (fr) * 2010-03-19 2011-09-21 Festool GmbH Machine-outil manuelle dotée d'une poignée
CN102390027A (zh) * 2011-12-09 2012-03-28 傅月华 自吸尘轴式打磨机
CN102773778A (zh) * 2011-12-20 2012-11-14 赵建康 可调节角度的墙面打磨机
FR3007679A1 (fr) * 2013-06-28 2015-01-02 Bosch Gmbh Robert Dispositif de transmission de machine-outil portative et machine equipee d'un tel dispositif
US11931851B2 (en) 2019-10-23 2024-03-19 Black & Decker Inc. Pole sander
US11867224B2 (en) 2021-01-27 2024-01-09 Black & Decker Inc. Locking mechanism for two telescoping poles of a power tool

Also Published As

Publication number Publication date
DE102008063510A1 (de) 2010-06-17
EP2196291A3 (fr) 2012-03-07

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