EP4241919A1 - Oberflächensanierungsvorrichtung und schutzgehäuse dafür - Google Patents

Oberflächensanierungsvorrichtung und schutzgehäuse dafür Download PDF

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Publication number
EP4241919A1
EP4241919A1 EP22201468.0A EP22201468A EP4241919A1 EP 4241919 A1 EP4241919 A1 EP 4241919A1 EP 22201468 A EP22201468 A EP 22201468A EP 4241919 A1 EP4241919 A1 EP 4241919A1
Authority
EP
European Patent Office
Prior art keywords
casing
pivot
cheek
shaft
side closing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22201468.0A
Other languages
English (en)
French (fr)
Inventor
Ronan GUILLIOT
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.)
Far Group Europe
Original Assignee
Far Group Europe
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 Far Group Europe filed Critical Far Group Europe
Publication of EP4241919A1 publication Critical patent/EP4241919A1/de
Pending 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
    • 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
    • B24B55/04—Protective covers for the grinding wheel
    • B24B55/05—Protective covers for the grinding wheel specially designed for portable grinding machines
    • B24B55/052—Protective covers for the grinding wheel specially designed for portable grinding machines with rotating tools
    • 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

Definitions

  • the invention relates to the field of surface renovation using portable electric tools, generally called polishing machines.
  • Portable electric surface renovation tools include a rotating cylindrical element of the brush or roller type whose active friction surface makes it possible in particular to strip, brush, sand, buff, clean, or polish, small or medium-sized surfaces such as metal surfaces. , wood, brick, plastic, or even tiles or stone.
  • the active surface of the roller is adapted to the type of surface to be renovated; it is for example based on felt, or sandpaper (with a continuous surface or in the form of strips), or even equipped with plastic or metal brushing bristles, etc.
  • such a roller surface renovation tool comprises a main body which houses electric drive means of the electric motor type and a part of which forms gripping means, and a rotary movement shaft which extends perpendicularly to the main body and is connected to the drive means, the shaft being intended to carry at least one roller, as well as a protective casing which is partially open and surrounds the roller in a semi-cylindrical volume.
  • the cover aims to protect the user (and the surrounding work area) from dust and debris projections during operation of the tool, that is to say when rotating the roller on a work surface.
  • the housing forms a semi-cylindrical shell which extends in a closed manner from the main body of the tool and above the rotating shaft so as to surround the roller along its entire length and at mid-volume of it. this.
  • many housings are open laterally opposite the end of the rotating shaft.
  • certain tools have a casing which includes a side closing cheek facing the free end of the rotating shaft.
  • the side panel is removably fixed in several places by fastening systems such as butterfly screws.
  • the invention therefore aims to propose a surface renovation device forming a portable electric tool and whose protective casing is provided with a side closing cheek, the device not having the aforementioned drawbacks.
  • the surface renovation device conforms to claim 1.
  • the surface renovation device (forming a portable electric tool) comprises a main body which houses electrical rotary drive means and part of which constitutes a gripping means, and a rotary shaft having a first end connected to the drive means and a second end opposite said first end and intended to receive at least one roller (the shaft being intended to carry at least one cylindrical element with an active renovation surface of the roller type), as well as 'a protective casing partially open and comprising a body and a side closing cheek which is arranged in a plane perpendicular to the shaft and facing the second end of the shaft, the device being characterized in that the side cheek closing remains integral with the body of the casing when opening and is able to be movable in pivoting via a pivot which is secured directly to the body of the casing and the cheek.
  • the body of the surface renovation device has a slender shape housing the electrical rotary drive means and one of the distal ends of which constitutes a gripping means.
  • pivot within the meaning of the invention is understood to mean a part constituting the support or the end of a pivot axis around which the lateral closing cheek is capable of rotating, the pivot securing the cheek to the body of the casing without possibility that the cheek does not detach from the housing (in the opening position of the cheek to work on the roller).
  • the pivot ensures direct attachment of the cheek to the body of the casing and immovability of the cheek in relation to the casing in the open position of the cheek for assembly or disassembly of the roller.
  • the cheek remains attached to the body of the casing when it opens. It is unlikely to fall and cannot be misplaced. Pivoting articulation via a pivot is an inexpensive manufacturing solution, robust in design and aesthetically discreet.
  • the pivot therefore allowing one part to be joined together and being directly attached (integrated) to the body of the casing, the pivot axis of the cheek is in no way offset, which gives a compact and robust layout, as well as reliable swivel. Furthermore, such a design allows rapid opening and closing of the cheek, which results in a simple and rapid change of the roller. Finally, the articulation of the cheek by pivot guarantees that the cheek is maintained even open after the casing; the user can only be obliged to close the cheek to use the device, which is a guarantee of safety for the user.
  • the pivot includes a pivot axis that is parallel to the rotating shaft.
  • the pivot includes a pivot axis that is perpendicular to the rotating shaft.
  • the pivot forms the end of a pivot axis which cooperates with a housing inside the body of the casing.
  • the pivot forms a pivot axis which is housed on the outside of the body of the casing.
  • the device comprises at least one locking means, preferably a single locking means, of the closing side cheek in its closed position, in particular the locking means being arranged on the cheek opposite the pivot .
  • the locking means is a quick-release system, in particular a latch attachment, in particular the attachment being secured to the side closing cheek while the latch is secured to the body of the casing.
  • quick-attach system we mean a system which does not require any tools for its implementation.
  • the locking means is for example a screw cooperating with the side closing cheek and the body of the casing.
  • the body of the casing has a side section closed by the side closing cheek, which is of polygonal shape, or circular, or a combination of straight and curved lines.
  • the body of the casing and the side closing cheek are made of molded plastic and/or are metallic.
  • the body of the casing comprises an evacuation outlet intended for suction, preferably the evacuation outlet comprises a bent conduit, the evacuation outlet being able to be closed by a closing means such as a removable cap.
  • the device with renovation function 1 illustrated by way of non-limiting example on the figures 1 to 3 constitutes a portable electric tool of the satin type which is intended to renovate surfaces.
  • the renovation device 1 is a roller renovation device being equipped with means adapted to surface renovation in the form of at least one rotary cylindrical element 10 with an active renovation surface, called a roller.
  • the renovation device 1 comprises a main body 2 which houses electrical rotary drive means and a part of which constitutes at least a first gripping means 20, a rotary shaft 3 (shown schematically on the figure 4 ) which is intended to carry the roller 10, as well as a partially open protective casing 4 which comprises a body 40 partially enveloping said roller 10 and a side closing cheek 41.
  • the side closing cheek 41 remains integral with the body 40 of the casing when it is opened and after opening.
  • the side closing cheek 41 is immovable.
  • the side closing cheek 41 remains integral with the body 40 of the casing while being able to be movable in pivoting via a pivot 42 integrated into the body of the casing.
  • the renovation device 1 comprises at least one locking means 6 which is capable of keeping the side closing cheek 41 closed against the body 40 of the casing.
  • the device comprises a second gripping means 21.
  • the device further comprises an evacuation outlet 5 (orifice or here preferably elbow conduit) intended to be connected to a suction system to suck up dust and debris during operation of the tool.
  • an evacuation outlet 5 orifice or here preferably elbow conduit
  • the roller 10 has an active renovation surface over the entire periphery of its cylindrical body, this surface being in a material adapted to the type of surface to be renovated.
  • the main body 2 of the device is here of elongated shape. Its distal end 20 serves as a handle and includes a tool on/off switch 20A. A 20B electrical cable is used to power the device electrically.
  • the rotating shaft 3 extends inside the casing 4 from the main body 2 and perpendicular thereto.
  • the rotary shaft 3 comprises a first end which is connected inside the main body 2 to the electrical rotary drive means, and a second end 30 opposite the first end and from which the roller 10 is intended to be fitted.
  • the roller 10 can be assembled/disassembled around the rotating shaft 3. It remains held on the shaft 3 by locking means (known per se) cooperating with said second end 30 of the shaft.
  • the casing 4 remotely covers part of the roller 10.
  • the casing 4 is not in direct contact with the roller 10 so as not to hinder its rotary movement.
  • the casing 4 constitutes a half-shell. It has a hollow volume shape making it possible to surround the roller 10 to correspond at least to the half-cylinder of the roller.
  • THE casing 4 protects and covers, on the one hand, the upper part of the roller 10 and one of the bases of the cylindrical roller facing the main body 2 thanks to the body 40 of the casing, and on the other hand, the other base 11 of the cylindrical roller thanks to the side closing cheek 41. In the position of use of the device, the roller 10 is hidden from the user.
  • the dust resulting from stripping during operation of the roller remains confined inside the casing 4 to fall downwards or preferably to be sucked up by suction means not illustrated and intended to be connected to the casing 4 via the outlet evacuation 5.
  • the casing 4 has a general polyhedron shape.
  • the body 40 of the casing has a polygonal shaped section ( figures 1 to 6 ).
  • the body 40 of the casing could have a section of circular shape ( figures 7 to 9 ) or a combination of curved and straight lines.
  • the evacuation outlet 5 is arranged on the rear face of the body of the casing, facing the user in the position of using the device.
  • the evacuation outlet 5 may include a closing means, for example a removable plug, when the user does not wish to connect the device to suction means.
  • the second gripping means 21 facilitates handling of the device during use.
  • the second gripping means 21 is associated with the main body 2 of the device, but could be associated with the casing 4, or even with the main body 2 and the casing 4 by being on horseback.
  • the side closing cheek 41 has a section adapted to close the open side face of the body 40 of the casing, face perpendicular and facing the second end 30 of the rotating shaft 3.
  • the side closing cheek 41 is integral with the body 40 of the casing in its open position.
  • the side closing cheek 41 is able to be movable in pivoting directly relative to the body 40 of the casing.
  • the side closing cheek 41 is fixed directly on the body 40 of the casing by the pivot 42.
  • the side closing cheek 41 is therefore secured to the body 40 of the casing thanks to the pivot 42 which ensures the pivoting in rotation of the cheek 41 while guaranteeing immovability of the cheek once opened for mounting or dismounting the roller 10.
  • the pivot 42 is on the edge or immediate edge of the periphery of the body 40 of the casing.
  • the pivot 42 comprises a pivot axis 43 which is integrated into the body of the casing, being in particular housed externally to the body 40 of the casing as visible on the figures 1 to 4 .
  • the pivot 42 comprises the pivot axis 43 secured to the cheek 41, lugs 44 and 45 spaced apart and secured to the edge of the body 40 of the casing and the fixing screws 46 and 47.
  • the axis of pivot 43 is arranged between the two lugs 44 and 45 and held together by the fixing screws 46 and 47 which pass through the respective lugs 44 and 45 and are screwed into each of the threaded ends of the pivot axis 43.
  • the pivot 42 forms the end of a pivot axis which cooperates with the interior of a housing 48 integrated into the body 40 of the casing and extending from a corner, here the lower rear corner 40D, parallel to the rotating shaft 3.
  • the surface renovation device 1 preferably comprises a single locking means 6 capable of keeping the side closing cheek 41 closed against the body 40 of the casing.
  • the locking means 6 cooperates with the side closing cheek 41 and the body 40 of the casing.
  • the locking means 6 is positioned on the side of the cheek which is opposite the side provided with the pivot 42.
  • the locking means 6 is advantageously a quick-release system (which does not require any tools).
  • the locking means 6 illustrated on the figure 1 is for example a latch fastener.
  • the locking means 6 illustrated on the Figure 6 is for example a screw, for example a manually tightened screw such as a butterfly screw or a quarter turn screw or the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Motor Or Generator Frames (AREA)
  • Pivots And Pivotal Connections (AREA)
EP22201468.0A 2022-03-08 2022-10-13 Oberflächensanierungsvorrichtung und schutzgehäuse dafür Pending EP4241919A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2202008A FR3125734B3 (fr) 2022-03-08 2022-03-08 Dispositif de renovation de surface et son carter de protection

Publications (1)

Publication Number Publication Date
EP4241919A1 true EP4241919A1 (de) 2023-09-13

Family

ID=84053144

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22201468.0A Pending EP4241919A1 (de) 2022-03-08 2022-10-13 Oberflächensanierungsvorrichtung und schutzgehäuse dafür

Country Status (2)

Country Link
EP (1) EP4241919A1 (de)
FR (1) FR3125734B3 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2882949A3 (fr) * 2005-03-14 2006-09-15 M B H Dev Sarl Ponceuse-meuleuse aspirante ou non
US20120156974A1 (en) * 2010-12-16 2012-06-21 Kundel Jr Robert Surface preparation apparatus
FR3062791A1 (fr) * 2017-02-13 2018-08-17 Far Group Europe Dispositif de renovation de surface.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2882949A3 (fr) * 2005-03-14 2006-09-15 M B H Dev Sarl Ponceuse-meuleuse aspirante ou non
US20120156974A1 (en) * 2010-12-16 2012-06-21 Kundel Jr Robert Surface preparation apparatus
FR3062791A1 (fr) * 2017-02-13 2018-08-17 Far Group Europe Dispositif de renovation de surface.

Also Published As

Publication number Publication date
FR3125734B3 (fr) 2023-09-22
FR3125734A3 (fr) 2023-02-03

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