EP2955435A1 - Ponceuse à bras girafe et unité d'éclairage associée - Google Patents

Ponceuse à bras girafe et unité d'éclairage associée Download PDF

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Publication number
EP2955435A1
EP2955435A1 EP15165423.3A EP15165423A EP2955435A1 EP 2955435 A1 EP2955435 A1 EP 2955435A1 EP 15165423 A EP15165423 A EP 15165423A EP 2955435 A1 EP2955435 A1 EP 2955435A1
Authority
EP
European Patent Office
Prior art keywords
unit
long
sander
necked
extension
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Withdrawn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
EP15165423.3A
Other languages
German (de)
English (en)
Inventor
Alexander Rohde
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.)
Metabowerke GmbH and Co
Original Assignee
Metabowerke GmbH and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Metabowerke GmbH and Co filed Critical Metabowerke GmbH and Co
Publication of EP2955435A1 publication Critical patent/EP2955435A1/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
    • F21V33/008—Leisure, hobby or sport articles, e.g. toys, games or first-aid kits; Hand tools; Toolboxes
    • F21V33/0084—Hand tools; Toolboxes

Definitions

  • the invention relates to a long-necked sander comprising a grinding unit with at least one driven grinding head, a drive unit for driving the grinding head, wherein the drive unit is powered by a power source, preferably batteries, and an extension arm for extending the axial extent of the long-necked sander proximal end of the driven grinding head is mounted.
  • Long-necked sander are well known in the art and are typically used where surfaces are to be processed that are difficult to access.
  • the grinding head is used to hold a brushing or grinding tool that rotates about a tool spindle.
  • the extension arm ensures that the sanding head can also be used for machining in areas where access is difficult.
  • the long-neck sander is guided and can be grasped by the user in the area of his extension arm or at its distal end.
  • Examples of a long-neck sander include the documents AT 0001 717 U1 . EP 1 719 581 B1 or EP 0 727 281 B1 known.
  • a lamp can additionally be provided which illuminates the work area.
  • a lamp can additionally be provided which illuminates the work area.
  • the additional lamp in the region of the grinding head has the disadvantage that it now occupies more space and thus only in a smaller size Scope of application can be used.
  • Hard-to-reach places which are difficult to access not only because of their distance from the user but also because of the space available, may no longer be reached by the enlarged long-neck sander in the area of the grinding head.
  • an object of the present invention is to develop known from the prior art long-neck sander and to reduce the disadvantages known from practice.
  • a long-neck sander with the features of claim 1 comprises a lighting unit with a light source, wherein the lighting unit can be fastened in the region of the distal end of the extension arm and has an electrical interface, by means of which it can be connected to the current source of the long-necked grinder in order to be supplied with power by the latter.
  • the illumination unit according to the invention is fastened not in the proximal end of the extension arm but in the region of the distal end.
  • the space required for the long-neck sander is increased in a range in which the enlargement almost no role in the accessibility of hard to reach surfaces with the tool plays.
  • the long-neck sander according to the invention has an electrical interface, which makes it possible to dispense with the provision of own batteries as a power source for the lighting unit.
  • the lighting unit can be constructed in this way particularly space-saving. Also, by dispensing with additional batteries for the lighting unit, the weight of the long-neck sander can be further reduced, which is advantageous in all hand-held power tool machines.
  • the lighting unit by means of batteries.
  • rechargeable batteries could be used to power the lighting unit, which are electrically charged via the electrical interface of the long-necked grinder when operating the latter. If the lighting unit is not fixedly connected to the long-necked grinder but can be detachably fastened to it, the lighting unit could also be used for illuminating in a state in which the long-necked grinder is released, whereby it could then virtually assume the function of a flashlight.
  • the long-necked sander may have a holding arrangement provided in the region of the distal end of the extension arm. In this way, the long-neck sander can be particularly easily held by a user. Alternatively or additionally, however, the extension arm can also be used to hold the long-necked sander.
  • the drive unit is mounted in the region of the distal end of the extension arm and comprises a housing which is designed to receive the electric drive and a part of the illumination unit.
  • the lighting unit can be detachably received in the housing attached thereto or fixed in the housing partially be attached to this attached.
  • the lighting unit may be releasably attached to the housing of the drive unit.
  • the lighting unit can also be used for illuminating in a state solved by the long-neck sander by this design variant, which can then virtually take over the function of a flashlight.
  • it may also be advantageous to detachably attach the lighting unit to the housing of the drive unit in order to ensure easy replacement in the event of a defect of the lighting unit or to give the user the opportunity, based on the application, the weight of the long-neck sander by waiving Reduce components.
  • the extension arm may comprise a telescoping tube. In this way, the distance between the illumination unit and the grinding head, but also between the holding arrangement and the grinding head can be changed, which makes it possible for a user to have a compact machine tool (important in particular during transport), with which he also in operation particularly difficult to reach places.
  • extension arm as a telescoping tube
  • an extension piece may be provided, which is provided between the illumination unit and the grinding head and / or between holding arrangement and the grinding head
  • the extension unit may in particular also be formed as a hollow cylinder and comprise a Staubabsaugkanal.
  • the transmission arrangement may be formed by a rigid or flexible shaft, which is able to transmit directly or indirectly to a tool spindle of the grinding unit the drive torque delivered by the drive unit, in particular by an electric motor.
  • a fastening unit For fastening the extension unit to the drive unit and to the grinding unit, a fastening unit may be provided which comprises a first attachment member attached to the drive unit or the grinding unit and a second attachment member attached to the extension unit, the first and associated second attachment member of a fixing unit respectively interact releasable attachment.
  • the lighting unit may further comprise at least one point light source, in particular a light emitting diode.
  • a light-emitting diode has the well-known advantage of being particularly energy-efficient.
  • the illumination unit may comprise at least one optical element, in particular a lens, in order to deflect the rays of the light source.
  • a lens in order to deflect the rays of the light source.
  • such an optical element offers the advantage of providing sufficient illumination of the working area even with a comparatively large distance between the light source and the working area.
  • the at least one optical element can not only assume the function of bundling the beams of the light source, but additionally also the function of shifting the area illuminated thereby.
  • the optical element may in particular comprise a convex lens (condenser lens).
  • mirrors or other lenses may be provided.
  • the lighting unit may comprise a switch for switching the light source on and off.
  • a separate switch has the advantage that the lighting unit is switched on or off independently of the long-neck sander. So it may be useful, for example, that the lighting unit can be switched on automatically with the long-necked sander together. In certain applications, however, it may be desirable to turn off the lighting unit, although the long-necked sander, in particular the grinding head, are operated. The fact that the lighting unit can be turned off while the long-necked sander is in operation, power can be saved. Furthermore, it may be useful to illuminate the area to be machined, even if the grinding head is not yet in operation.
  • the present invention also relates to a lighting unit for a long-necked sander with the features described above.
  • the long-necked sander according to the invention is generally indicated by the reference numeral 10. It comprises, in a known manner, a grinding unit 20 with a grinding head 22 and a drive unit 30.
  • the drive unit 30 has an electric motor 32, which is received in a housing 34.
  • a disk-shaped brushing or grinding tool W is rotatably received on the grinding head via a tool spindle WS.
  • a handle 36 extends at an end of the housing 34 facing away from the tool W.
  • the electric motor 32 can be supplied in a known manner by accumulators (not shown) or by an external power source via an electrical line (not shown).
  • the drive torque of the motor 32 is transmitted from an output shaft 14 via a rigid transmission shaft 16 and a flexible transmission shaft 18 to the tool spindle WS of the grinding head 22 to drive the tool W in rotation.
  • the grinding unit 20 comprises, in addition to the grinding head 22, a supporting frame 12 which supports the grinding head 22 with respect to a housing 26 of the grinding unit 20. From the housing 26 extends a flexible connecting line 24, in which the flexible transmission shaft 18 is received. Furthermore, at least one, preferably two suction lines 46 extend from the housing 26 to the grinding head 22 in order to achieve efficient extraction of dust particles produced during processing. From the housing 26 extends in the distal direction (with respect to the tool W) further comprises a connecting arm 28, within which the rigid transmission shaft 16 is guided. The connecting arm 28 further includes a suction duct 44 in fluid communication with the suction duct 46 (s) 46 stands. Then, when the grinding unit 20 is directly connected to the drive unit 30 via the connecting arm 28 (not shown), the connecting arm 28 forms a (proximal) interface with the drive unit 30 at its free end.
  • a connecting piece 38 for connecting a dust extraction (for example in the form of a vacuum cleaner) is formed on the housing 34 of the drive unit 30. Suction air is sucked in through the extraction opening 40 on the connecting piece 38 through a suction channel 42 formed inside the housing 34, which in a connected state of the drive unit 30 is aligned with the grinding unit 20 with the suction channel 44 of the grinding unit 20, so that an extraction from the workpiece can take place until the connection piece 38.
  • the longitudinal extent of the long-necked sander 10 according to the invention can be extended from a minimum length (without extension unit 70) to a maximum length with the aid of an extension unit 70.
  • the extension unit 70 is provided between the grinding unit 20 and the drive unit 30.
  • a telescoping linkage 28 or the like is also conceivable to extend the minimum length of the long-necked sander.
  • the extension unit 70 is cylindrical in the illustrated embodiment and has at its two free ends connecting elements, which form a proximal interface 50 and a distal interface 60 together with the corresponding connection elements of the grinding unit 20 and the connecting arm 28 and the drive unit 30. How to use the FIG. 1 can be seen, at the free end of the connecting arm 28 of the grinding unit 20, on the housing 34 of the drive unit 30 and at the two ends of the extension unit 70 mounting members for producing a detachable attachment of the extension unit 70 to the drive unit 30 and the grinding unit 20 are provided.
  • a pin 84 located at the proximal interface 50b attached to the extension unit 70 and attached to the drive unit 30 at the distal interface 60; and a cocking hook 90 provided on the grinding unit 20 at the proximal interface 50 and attached to the extension unit 70 at the distal interface 60 ,
  • proximal interface 50 and the distal interface 60 are configured such that, in the absence of the extension unit 70, the corresponding attachment members attached to the drive unit 30 and the grinding unit 20 together form a proximal interface. Accordingly, the proximal interface 50 and the distal interface 60 are formed substantially identically, for which reason only the proximal interface 50 will be referred to in detail below.
  • the clamping hook 90 can be actuated via a rotary lever 86, which is designed to be rotatable about an eccentric bearing 88.
  • the tension hook 90 is pivoted by means of the rotary lever 86 via the pin 84. Due to its at least partially elastic formation of the clamping hook 90 slides over a dead center on the pin 84 and biases in its end position the pin 84 and the associated extension unit 70 against the connecting arm 28.
  • a clip closure could also be provided, for example, a clip closure.
  • the extension unit 70 comprises an extension tube 72 which extends along a central longitudinal axis. Within the extension tube 72, a connecting shaft 74 and a connecting channel 76 are arranged.
  • the extension unit 70 is thus formed in the manner of a double tube, wherein the receptacle for the extension shaft 74 is separated from the extension channel 76 by a tube wall.
  • the extension channel 76 connects the suction channel 44 of the connecting arm 28 with the suction channel 42 of the motor housing 34.
  • the extension shaft 74 connects the output shaft 14 with the transmission shaft 16, and thus enables transmission of a driving torque from the motor 32 to the tool spindle WS of the grinding unit 20.
  • FIG. 2 shows the proximal interface 50 in detail in a longitudinal sectional view.
  • a coupling housing part 80 is formed, which serves with a corresponding coupling housing part 82 of the connecting arm 28 for releasably connecting and fastening the extension unit 70 with or on the connecting arm 28.
  • the above-described components of the mounting arrangement, the pin 84, the clamping hook 90 and the associated rotary lever 86 are formed on the respective housing parts 80, 82 in order to provide a particularly simple fastening arrangement.
  • the coupling has a coupling member 52b of the extension unit 70 and a cooperating coupling member 54b of the grinding unit 20.
  • the coupling member 52b comprises a first coupling element 56a, on the front side of which claws are formed. These engage in a form-fitting manner in claw elements of the cooperating coupling element 54b of the grinding unit 20 arranged on the face side.
  • the coupling formed in the manner of a dog clutch is resiliently mounted on one side and the coupling member 52b accordingly has a spring 58 which is arranged between the first coupling element 56a and a second coupling element 56b of the coupling member 52b.
  • the first coupling element 56a is rotatably connected to the extension shaft 74 for transmitting a driving torque from the extension shaft 74 to the cooperating coupling member 54b.
  • the illustrated embodiment has the advantage of a particularly cost-effective production of the individual elements.
  • the configuration of the distal interface 60 is largely identical to that of the proximal interface 50.
  • the clutch housing is formed by housing parts of the housing 34 of the drive unit and a coupling housing part 78.
  • the clutch received therein comprises the coupling member 52a, which is provided at the distal free end of the extension unit, and the coupling member 54a, which is provided on the drive unit 30.
  • the coupling member 52a corresponds to the structure of the coupling member 54b of the proximal interface 50
  • the coupling member 54a corresponds in its construction to the structure of the coupling member 52b of the proximal interface 50.
  • a lighting unit 100 is furthermore provided on the long-necked sander 10. Like in the FIG. 1 can be seen, this is provided in the region of the drive unit 30 and thus in the region of the distal end of the long-necked sander 10.
  • the housing 34 has a fastening section 48 which connects the lighting unit 100 to the housing 34.
  • the attachment portion may be configured for a detachable or non-detachable attachment.
  • an electrical interface (not shown) is formed, which connects the lighting unit 100 with the power source (not shown) of the long-necked grinder.
  • a light-emitting diode (LED) is provided as a punctiform light source 102, the rays of which are deflected by means of an additional convex converging lens 104.
  • the illumination unit 100 can also comprise further lenses and / or mirrors as optical elements in order to focus, scatter and / or deflect the beams of the light source.
  • a mirror surface may be provided on which the LED is mounted to redirect the lateral rays of the LED toward the converging lens 104.
  • the illumination unit 100 comprises a switch 106 for switching the illumination unit 100 on and off, independently of the switching situation of the long-necked sander.
  • the beams can be collected and deflected as desired, whereby the lighting unit can be mounted at a greater distance from the tool W and the surface to be processed and at the same time can provide a good illumination of the working area on the surface to be processed , Since the illumination unit 100 is arranged in the region of the distal end of the long-necked sander 10, the grinding unit can continue to perform the desired surface treatment even in hard-to-reach areas.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP15165423.3A 2014-06-13 2015-04-28 Ponceuse à bras girafe et unité d'éclairage associée Withdrawn EP2955435A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014108319 2014-06-13
DE102014111250.4A DE102014111250A1 (de) 2014-06-13 2014-08-07 Langhalsschleifer sowie Beleuchtungseinheit dafür

Publications (1)

Publication Number Publication Date
EP2955435A1 true EP2955435A1 (fr) 2015-12-16

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EP15165423.3A Withdrawn EP2955435A1 (fr) 2014-06-13 2015-04-28 Ponceuse à bras girafe et unité d'éclairage associée

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EP (1) EP2955435A1 (fr)
DE (1) DE102014111250A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106956174A (zh) * 2017-02-17 2017-07-18 东莞产权交易中心 一种光网电动墙壁打磨机
CN108000301A (zh) * 2018-01-04 2018-05-08 锐奇控股股份有限公司 手持式砂光机
CN110103110A (zh) * 2018-02-01 2019-08-09 株式会社牧田 长杆型抛光机
DE102020125135A1 (de) 2020-09-25 2022-03-31 Jöst Gmbh Schleifscheibe, Schleifvorrichtung sowie Verwendung einer Schleifscheibe
CN114789384A (zh) * 2021-01-26 2022-07-26 南京泉峰科技有限公司 电动工具
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 (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112996631B (zh) * 2019-04-23 2023-03-17 南京泉峰科技有限公司 长杆式打磨机

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4782632A (en) 1987-10-01 1988-11-08 William Matechuk Drywall sander
AT1717U1 (de) 1996-10-03 1997-10-27 Preishuber Herbert Handgeführte stabförmige vorrichtung mit rotierenden bürst- oder schleifwerkzeug
EP0727281B1 (fr) 1995-02-16 2001-10-17 Porter-Cable Corporation Ponçeuse motorisée
FR2897551A1 (fr) * 2006-02-20 2007-08-24 M B H Dev Sarl Ponceuse a manche avec dispositif de controle de l'etat de surface de zones poncees
US20100027246A1 (en) * 2008-08-01 2010-02-04 3M Innovative Properties Company Surface modifying apparatus having illumination system and method thereof
EP1719581B1 (fr) 2005-05-02 2013-03-13 Flex-Elektrowerkzeuge GmbH Ponçeuse motorisée à tête pivotable et porte-outil

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4685252A (en) * 1985-07-22 1987-08-11 Ponce Felix C Reciprocating sander
US7220174B2 (en) * 2004-09-29 2007-05-22 Black & Decker Inc. Drywall sander

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4782632A (en) 1987-10-01 1988-11-08 William Matechuk Drywall sander
EP0727281B1 (fr) 1995-02-16 2001-10-17 Porter-Cable Corporation Ponçeuse motorisée
AT1717U1 (de) 1996-10-03 1997-10-27 Preishuber Herbert Handgeführte stabförmige vorrichtung mit rotierenden bürst- oder schleifwerkzeug
EP1719581B1 (fr) 2005-05-02 2013-03-13 Flex-Elektrowerkzeuge GmbH Ponçeuse motorisée à tête pivotable et porte-outil
FR2897551A1 (fr) * 2006-02-20 2007-08-24 M B H Dev Sarl Ponceuse a manche avec dispositif de controle de l'etat de surface de zones poncees
US20100027246A1 (en) * 2008-08-01 2010-02-04 3M Innovative Properties Company Surface modifying apparatus having illumination system and method thereof

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106956174A (zh) * 2017-02-17 2017-07-18 东莞产权交易中心 一种光网电动墙壁打磨机
CN108000301A (zh) * 2018-01-04 2018-05-08 锐奇控股股份有限公司 手持式砂光机
CN110103110A (zh) * 2018-02-01 2019-08-09 株式会社牧田 长杆型抛光机
US11931851B2 (en) 2019-10-23 2024-03-19 Black & Decker Inc. Pole sander
DE102020125135A1 (de) 2020-09-25 2022-03-31 Jöst Gmbh Schleifscheibe, Schleifvorrichtung sowie Verwendung einer Schleifscheibe
CN114789384A (zh) * 2021-01-26 2022-07-26 南京泉峰科技有限公司 电动工具
US11867224B2 (en) 2021-01-27 2024-01-09 Black & Decker Inc. Locking mechanism for two telescoping poles of a power tool

Also Published As

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