EP2196284A2 - Machine de nettoyage/ d'affilage manuelle - Google Patents

Machine de nettoyage/ d'affilage manuelle Download PDF

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Publication number
EP2196284A2
EP2196284A2 EP09177206A EP09177206A EP2196284A2 EP 2196284 A2 EP2196284 A2 EP 2196284A2 EP 09177206 A EP09177206 A EP 09177206A EP 09177206 A EP09177206 A EP 09177206A EP 2196284 A2 EP2196284 A2 EP 2196284A2
Authority
EP
European Patent Office
Prior art keywords
shaft
tubular element
grinding machine
drive motor
tool head
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.)
Granted
Application number
EP09177206A
Other languages
German (de)
English (en)
Other versions
EP2196284A3 (fr
EP2196284B1 (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 EP2196284A2 publication Critical patent/EP2196284A2/fr
Publication of EP2196284A3 publication Critical patent/EP2196284A3/fr
Application granted granted Critical
Publication of EP2196284B1 publication Critical patent/EP2196284B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
    • B24B55/102—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided with rotating 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
    • B24B23/005—Auxiliary devices used in connection with portable grinding machines, e.g. holders
    • 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
    • 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
    • B24B23/04—Portable grinding machines, e.g. hand-guided; Accessories therefor with oscillating grinding tools; Accessories therefor
    • 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
    • B24B27/0084—Other grinding machines or devices the grinding wheel support being angularly adjustable
    • 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
    • B24B7/184—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like for walls and ceilings pole sanders
    • 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 cleaning / grinding machine, comprising a holding device for holding the cleaning / grinding machine, a drive motor, which is arranged on the holding device, and a tool head, which is pivotable about at least one pivot axis relative to the holding device.
  • a hand-held grinding machine comprising a holding device for holding the grinding machine, a drive motor, which is arranged on the holding device, a tool head which is pivotable about at least one pivot axis relative to the holding device and having a driven via the drive motor tool drive shaft, and a transmission device for Torque transmission from the drive motor to the tool drive shaft.
  • the transmission device has a rigid shaft, which is coupled to the tool drive shaft via a transmission or a hinge device.
  • a tool holding device for a hand-held grinding machine which comprises a fixing device for releasably fixing the tool holding device to a tool head and a shaft for driving a held by the tool holder tool, which is coupled to a tool drive shaft of the tool head.
  • the tool holding device may have a gear and in particular a reduction gear, via which the shaft is coupled to the tool drive shaft or can be coupled.
  • a hand-held cleaning / grinding machine in which at least one coupling for connecting at least one first liquid line is arranged on a holding device. Of the at least one coupling leads at least one second liquid line to a tool head.
  • a handle for rotating surface processing tools consisting of a handle and a releasably and interchangeably connected to the handle or connectable tool carrier wherein the handle of a handle housing and rotatably disposed therein, connectable with a rotary drive shaft and the tool carrier of a shaft sleeve and a rotatably disposed therein, connectable to the respective tool output shaft, and wherein the shaft sleeve on retaining means on the handle housing can be fastened, while the output shaft with the drive shaft via a plug connection is torque-connected.
  • the holding means are designed as a quick-clamping device, in particular in the manner of a bayonet connection.
  • the invention has for its object to provide a hand-held cleaning / grinding machine of the type mentioned, which allows fatigue-free operation for a user.
  • 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.
  • the drive motor is in principle the heaviest part of the hand-held cleaning / grinding machine.
  • the heaviest part of the machine can lie between the hands of the operator or the machine can be held at or near its center of gravity.
  • the fan device By the fan device, an air flow can be generated, which flows through the channel and can flow around the drive motor to its cooling.
  • the handle with the channel formed therein is also used for cooling the drive motor.
  • the drive motor and the transmission device can be implemented with a suitable storage of the drive motor and the transmission device and in particular floating storage a low vibration transmission and noise transmission to a housing;
  • the drive motor and the transmission device can be stored separately and thus can be damped separately for the drive motor and the transmission device vibration.
  • a finger penetration area is below the grab handle. This allows an operator to hold the cleaning / grinding machine securely on the handle.
  • the fan device and / or the transmission device are arranged closer to the 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 transmission device are arranged in a 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 are 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.
  • a connection for a vacuum cleaner arranged is a connection for a vacuum cleaner arranged. 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.
  • 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 cleaning / grinding machine can be formed, for example, with little weight.
  • the drive motor is mounted floating in a housing device. As a result, the vibration transmission and noise transmission to the housing device is minimized.
  • the transmission device is mounted floating in the housing device.
  • the drive motor and the housing device are mounted separately floating, so that there is a vibration decoupling between the drive motor and the housing device.
  • the floating bearing is achieved for example by a plurality of elastic elements such as rubber buffers. About this there is a support of the drive motor and / or the transmission device to the housing device.
  • a shaft is arranged between the drive device and the transmission device. At least one partial vibration decoupling between the drive motor and the housing device is possible via the shaft since these are spaced apart from one another.
  • the shaft is positioned in the housing means. As a result, it is arranged protected.
  • the vibration decoupling between the drive motor and the transmission device is minimized when the shaft is a flexible shaft or comprises a flexible shaft element. As a result, a rigid coupling is avoided.
  • the shaft comprises at least two shaft elements, which are connected via at least one elastic coupling. This also avoids a rigid coupling.
  • the corresponding non-rigid coupling provides for at least partial vibration decoupling between the drive motor and the transmission device.
  • the 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.
  • a wall and ceiling machining is possible and also a convenient tillage without an operator has to stoop.
  • 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 area of the end of the rod element 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, on which the first Tube member 18 is fixed, and an upper shell 48, which is 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 coupled to the transmission device 52. 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 portion 72 formed across the aperture 74 are sized to fit the dimensions of the human hand.
  • 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. It is in principle also possible that the first housing portion 58 with the first pipe member 18 is connected. Alternatively, 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 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 sheet member 94 and the second pipe member 86 hold the tool head 14.
  • an operator can 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 can be adjusted via the displaceability of the rod element 24 in the first tube element 18.
  • 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. These are also elastic elements 140th provided (for example rubber buffer). About this, 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. Thus, it causes a torque coupling of the 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 are rubber members.
  • 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 on a housing means 44 (wherein the drive motor 50 and the transmission device 52 may be mounted floating in the same housing or may be mounted 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. As a result, the cleaning / grinding machine 10 can move over the handle 68 at or near its center of gravity being held. 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 can enable a reduced rotation, for example, of a shaft element to which a tool is to be coupled, or an eccentric movement. Different speeds can be adjustable.
  • 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)
  • Cleaning In General (AREA)
EP09177206A 2008-12-10 2009-11-26 Machine de nettoyage/ d'affilage manuelle Active EP2196284B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008063508A DE102008063508A1 (de) 2008-12-10 2008-12-10 Handgehaltene Reinigungs-/Schleifmaschine

Publications (3)

Publication Number Publication Date
EP2196284A2 true EP2196284A2 (fr) 2010-06-16
EP2196284A3 EP2196284A3 (fr) 2010-09-29
EP2196284B1 EP2196284B1 (fr) 2012-01-18

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EP (1) EP2196284B1 (fr)
AT (1) ATE541670T1 (fr)
DE (1) DE102008063508A1 (fr)

Cited By (10)

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WO2014086876A1 (fr) * 2012-12-07 2014-06-12 Flex-Elektrowerkzeuge Gmbh Ponceuse à main
WO2014086829A1 (fr) * 2012-12-07 2014-06-12 Flex-Elektrowerkzeuge Gmbh Ponceuse à main
WO2014086873A1 (fr) * 2012-12-07 2014-06-12 Flex-Elektrowerkzeuge Gmbh Meuleuse à main
WO2015091066A1 (fr) * 2013-12-19 2015-06-25 Flex-Elektrowerkzeuge Gmbh Meuleuse portative
EP3000559A3 (fr) * 2014-09-25 2016-04-06 Metabowerke GmbH Machine-outil et sa structure porteuse
US9387566B2 (en) 2012-12-07 2016-07-12 Flex-Elektrowerkzeuge Gmbh Handheld abrading machine
US9956676B2 (en) 2013-01-09 2018-05-01 Techtronic Power Tools Technology Limited Tool with rotatable head
CN111421440A (zh) * 2020-05-19 2020-07-17 上海汇雨实业有限公司 一种保证拐角弧度一致性的碳纤维布打磨装置
WO2020173487A1 (fr) * 2019-02-27 2020-09-03 南京德朔实业有限公司 Outil électrique à longue perche
US11806858B2 (en) * 2017-09-27 2023-11-07 Globe (jiangsu) Co., Ltd. Impact protecting member for a cutting tool

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DE202012009284U1 (de) * 2012-09-27 2014-01-22 Heger Gmbh European Diamond Tools Tragbares Schleifgerät zum Schleifen einer Wand
EP3812089A1 (fr) 2019-10-23 2021-04-28 Black & Decker Inc. Ponceuse à manche
US11867224B2 (en) 2021-01-27 2024-01-09 Black & Decker Inc. Locking mechanism for two telescoping poles of a power tool
EP4313456A4 (fr) 2021-04-01 2025-03-12 Milwaukee Electric Tool Corporation Extracteur de poussière intégré et outil électrique
US12296456B2 (en) 2021-04-01 2025-05-13 Milwaukee Electric Tool Corporation Integrated dust extractor and power tool
CN120962484A (zh) * 2024-05-11 2025-11-18 南京泉峰科技有限公司 杆式电动工具及电动工具

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EP1719581A1 (fr) 2005-05-02 2006-11-08 Flex-Elektrowerkzeuge GmbH Ponçeuse motorisée à tête pivotable et porte-outil
EP1961518A1 (fr) 2007-02-22 2008-08-27 Flex-Elektrowerkzeuge GmbH Machine de nettoyage et de soudure manuelle

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US2365232A (en) 1942-09-05 1944-12-19 William W Wert Portable tool
US5788561A (en) 1996-01-11 1998-08-04 Pearl Abrasive Co. Apparatus for grinding floor surfaces and/or cutting grooves in floors
DE20309337U1 (de) 2003-06-17 2004-10-28 Joisten & Kettenbaum Gmbh & Co. Kg Handgriff für rotierende Oberflächen-Bearbeitungswerkzeuge
EP1719581A1 (fr) 2005-05-02 2006-11-08 Flex-Elektrowerkzeuge GmbH Ponçeuse motorisée à tête pivotable et porte-outil
EP1961518A1 (fr) 2007-02-22 2008-08-27 Flex-Elektrowerkzeuge GmbH Machine de nettoyage et de soudure manuelle

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9387566B2 (en) 2012-12-07 2016-07-12 Flex-Elektrowerkzeuge Gmbh Handheld abrading machine
CN104781044B (zh) * 2012-12-07 2017-07-28 弗莱克斯电动工具责任有限公司 手持研磨机
WO2014086873A1 (fr) * 2012-12-07 2014-06-12 Flex-Elektrowerkzeuge Gmbh Meuleuse à main
US9981360B2 (en) 2012-12-07 2018-05-29 Flex-Elektrowerkzeuge Gmbh Handheld abrading machine
CN104781044A (zh) * 2012-12-07 2015-07-15 弗莱克斯电动工具责任有限公司 手持研磨机
CN104781046A (zh) * 2012-12-07 2015-07-15 弗莱克斯电动工具责任有限公司 手持研磨机
US20150314413A1 (en) * 2012-12-07 2015-11-05 Flex-Elektrowerkzeuge Gmbh Handheld abrading machine
CN104781046B (zh) * 2012-12-07 2018-05-18 弗莱克斯电动工具责任有限公司 手持研磨机
WO2014086829A1 (fr) * 2012-12-07 2014-06-12 Flex-Elektrowerkzeuge Gmbh Ponceuse à main
WO2014086876A1 (fr) * 2012-12-07 2014-06-12 Flex-Elektrowerkzeuge Gmbh Ponceuse à main
US9956676B2 (en) 2013-01-09 2018-05-01 Techtronic Power Tools Technology Limited Tool with rotatable head
WO2015091066A1 (fr) * 2013-12-19 2015-06-25 Flex-Elektrowerkzeuge Gmbh Meuleuse portative
CN105899330B (zh) * 2013-12-19 2018-02-06 弗莱克斯电动工具责任有限公司 手持研磨机
CN105899330A (zh) * 2013-12-19 2016-08-24 弗莱克斯电动工具责任有限公司 手持研磨机
US10035236B2 (en) 2013-12-19 2018-07-31 Flex-Elektrowerkzeuge Gmbh Handheld abrading machine
EP3000559A3 (fr) * 2014-09-25 2016-04-06 Metabowerke GmbH Machine-outil et sa structure porteuse
US11806858B2 (en) * 2017-09-27 2023-11-07 Globe (jiangsu) Co., Ltd. Impact protecting member for a cutting tool
WO2020173487A1 (fr) * 2019-02-27 2020-09-03 南京德朔实业有限公司 Outil électrique à longue perche
CN111421440A (zh) * 2020-05-19 2020-07-17 上海汇雨实业有限公司 一种保证拐角弧度一致性的碳纤维布打磨装置

Also Published As

Publication number Publication date
DE102008063508A1 (de) 2010-06-17
EP2196284A3 (fr) 2010-09-29
ATE541670T1 (de) 2012-02-15
EP2196284B1 (fr) 2012-01-18

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