EP4241920A1 - Quick-lock roller surface renovation device - Google Patents

Quick-lock roller surface renovation device Download PDF

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Publication number
EP4241920A1
EP4241920A1 EP23159360.9A EP23159360A EP4241920A1 EP 4241920 A1 EP4241920 A1 EP 4241920A1 EP 23159360 A EP23159360 A EP 23159360A EP 4241920 A1 EP4241920 A1 EP 4241920A1
Authority
EP
European Patent Office
Prior art keywords
cheek
roller
casing
locking part
locking
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
EP23159360.9A
Other languages
German (de)
French (fr)
Inventor
Ronan GUILLIOT
Nicolas Gervais
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
Priority claimed from FR2202008A external-priority patent/FR3125734B3/en
Priority claimed from FR2202894A external-priority patent/FR3134023B1/en
Application filed by Far Group Europe filed Critical Far Group Europe
Publication of EP4241920A1 publication Critical patent/EP4241920A1/en
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
    • 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
    • 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

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 part of which forms gripping means, a rotary movement shaft which is connected to the means drive and is intended to carry at least one roller, and means for holding the roller in position on the shaft, as well as a protective casing which is partially open and surrounds the roller in a semi-cylindrical volume.
  • the means for locking the roller in position on the shaft are of course necessary due to the rotation of the roller.
  • These locking means usually consist of a washer and a clamping screw which cooperate with the end of the shaft and rest on the side face of the roller (once the roller is positioned on the shaft).
  • 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 half volume of that -this.
  • many casings are open laterally facing each other. from the end of the rotating shaft.
  • certain tools have a casing which includes a side closing cheek facing the free end of the rotation shaft, as shown in the document FR 3 062 791 .
  • the user may be distracted once the cheek and the locking means have been disassembled, by placing them among other objects on his work bench, and once he has to reassemble a roller, he may have difficulty to find all the parts of the locking means and the closing cheek.
  • the invention therefore aims to propose a surface renovation device forming a portable electric tool, comprising a protective casing which is provided with a side closing cheek, the device obviating the aforementioned drawbacks by notably providing a rapid solution for assembly and disassembly of the roller and the protective casing, while guaranteeing locking of the roller on the rotation shaft.
  • the surface renovation device must provide rapid locking of the roller.
  • the surface renovation device (forming a portable electric tool) comprises a main body which houses electrical rotary drive means, a rotation shaft capable of rotating via said drive means and intended to carry the minus one cylindrical element with an active renovation surface of the roller type, locking means intended to lock the roller in position on the shaft, and a protective casing which extends from the main body and houses the rotation shaft, the casing being closed opposite the main body by a cheek (the casing comprises a body and a closing cheek), the device being characterized in that the roller locking means are integral with the cheek of the casing and comprise a so-called locking piece which is suitable to rotate and, in the closed position of the cheek, is capable of cooperating in support against the roller intended to be mounted on the rotation shaft.
  • the locking means being integral with the cheek of the casing, cooperate directly with the roller when closing the cheek, which allows in a single operation - closing the cheek - to lock the roller in place on the 'TREE.
  • the locking part being able to rotate, the roller remains held firmly in place while being driven by the tool shaft. Assembly and disassembly of the roller are very quick since only the side of the casing has to be closed or opened. Locking of the roller is therefore also quick. The roller locks automatically when the cover is closed.
  • the locking part is mounted on a rotating support, in particular a ball bearing support (or an equivalent support with a rotating function by mechanical drive).
  • the ball bearing support guarantees uniform and long-lasting rotation of the locking part.
  • the locking part is supported elastically (against the roller), preferably the locking means comprise a spring, in particular a coil spring, which is positioned between the locking part and a rotating support of the part, the rotating support being integral with the cheek.
  • This elastically supported configuration makes it possible to absorb any play that may exist regarding the length of different types of rollers. This makes it possible to adjust, position and adjust the locking part as best as possible on and/or in the roller hub, and moreover automatically.
  • the locking part forms a male part which is intended to cooperate with the hub of the roller intended to be positioned on the rotation shaft of the device.
  • the locking part has its chamfered distal end, in particular the locking part has its distal end which is of frustoconical shape while being convergent in the direction opposite to the cheek of the casing (in the direction of the shaft and therefore the roller hub).
  • This design facilitates guiding by inserting the locking part (converging male shape) inside the roller hub. Furthermore, even when play exists at the diameter of the hub, this shape allows it to cooperate with the roller hub and therefore guarantees the maintenance of the roller.
  • the cheek of the casing is fixed to the (body of the) casing via a pivot.
  • the cheek remains attached to the body of the casing and opens/closes by pivoting.
  • the casing cheek could be removable.
  • pivot in the sense of the invention is meant a part constituting the support or the end of a pivot axis around which the closing cheek is capable of rotating, the pivot securing the cheek to the body of the casing without the possibility that the cheek does not come off the crankcase.
  • 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 during 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 which is parallel to the rotating shaft.
  • the pivot comprises a pivot axis which 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 cheek of the casing is fixed on one side by a pivot pin, and on the opposite side by a quick-release fixing (or by any other type of fixing, including by clipping).
  • the pivot pin can be removable if the entire cheek needs to be dismantled, in particular to better visualize certain precision work.
  • the pivot axis is external to the body of the casing and fixed by screws, which provides a simple and easily removable assembly.
  • the quick-release attachment is preferably a latch attachment system, in particular the attachment (or counter-hook) being secured to the cheek while the latch is secured to the body of the casing.
  • latch attachment system we mean a system which does not require any tool for its implementation.
  • the closing cheek of the casing comprises a body made of plastic material, and a metal plate which is secured to the internal face of the body of the cheek and to which the locking means are secured.
  • the internal face of the cheek is entirely covered with the metal plate which may include shapes with reinforcing geometry.
  • the metal plate can be provided with an extension projecting towards the outside of the cheek and forming an attachment means for closing the cheek, in particular forming the counter-hook of a quick-release fastener, in particular a latch attachment.
  • the cheek could be completely metallic or entirely based on plastic material.
  • the body of the casing has a lateral section closed by the closing cheek, which is of polygonal shape, or circular, or a combination of straight and curved lines.
  • the body of the casing forms in particular a half-shell.
  • the casing comprises an evacuation outlet intended for suction, the evacuation outlet being able to comprise a bent conduit and/or being able to be closed by a closing means such as a removable plug.
  • the dust evacuation outlet comprises means preventing the introduction of one or more fingers inside the casing, in particular the evacuation outlet has a through hole in the thickness of the casing and means partial shutters preventing the introduction of one or more fingers through the orifice, in the form of a grid or parallel bars spaced at a distance of at most 6 mm.
  • the renovation device comprises a roller which has a hub of which at least one distal end is chamfered and cooperates with the locking part, which makes it even easier to guide and cooperate the locking part in the hub.
  • the device comprises a roller which has a hub comprising two longitudinal ribs which cooperate directly with two longitudinal grooves with which the rotation shaft is provided, which allows very rapid assembly of the roller; there is no need for keys as is usually the case.
  • roller electric tool means an electric tool capable of rotating a functional element of cylindrical shape to carry out a DIY task.
  • the device with renovation function 1 illustrated by way of non-limiting example on the figures 1 to 5 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 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 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 rotation shaft 3 which is intended to carry the roller 10, and a casing protection 4 partially open which comprises a body 40 partly enveloping said roller 10 and a side closing cheek 41, as well as locking means 5 for holding the roller 10 in position on the shaft 3.
  • the locking means 5 for holding the roller in position are integral with the cheek 41 of the casing 4 ( figures 3 to 6 ).
  • the locking means 5 are intended to cooperate with the interior of the hub 11 of the roller 10.
  • the device further comprises an evacuation outlet 6 (an extended orifice of a conduit which can be bent) intended to be connected to a vacuum system to suck up dust and debris during tool operation.
  • 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.
  • An electric cable or, as shown schematically, an electric cable sleeve 20B makes it possible to electrically power the device.
  • the renovation device 1 comprises a second gripping means 21.
  • 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 rotation shaft 3 extends from the main body 2 and perpendicular thereto.
  • the rotation shaft 3 comprises a first end which is connected inside the main body 2 to the electrical rotary drive means (known per se), and a second end 30 opposite the first end and from which is intended to be fitted the roller 10.
  • the rotation shaft 3 ( figures 3 to 5 ) has two opposite longitudinal grooves 31 which participate in the engagement and maintenance of the roller 10 on the shaft 3.
  • the roller 10 can be assembled/disassembled around the rotation shaft 3 of the device.
  • the roller 10 is able to cooperate via its hub 11 with the shaft 3.
  • a roller 10 designed for rapid assembly on the shaft 3 is used.
  • the hub 11 of the roller 10 illustrated here comprises integrated means 12 for mutual cooperation, in this case male means such as two opposite longitudinal ribs, which cooperate directly by mutual engagement with the grooves 31 of the shaft 3.
  • the renovation device 1 comprises the locking means 5 of the invention described below, which are integral with the cheek 41 , and by closing the cheek, are engaged ( figure 5 ) in the hub 11 while being abutted against the side face 13 of the roller, thus laterally compressing the roller.
  • the hub 11 of the roller 10 can have its entrance 11' chamfered towards the inside of the hub, as illustrated in the figure 5 to facilitate the introduction of the locking means 5.
  • 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 side faces of the roller facing the main body 2 thanks to the body 40 of the casing, and on the other hand, the other face 13 of the roller thanks to the side closing cheek 41. In the device use position, 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 6.
  • the evacuation outlet 6 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 6 may include a closing means, for example a removable plug, when the user does not wish to connect the device to suction means.
  • the evacuation outlet 6 is advantageously designed to prevent the user from being able to introduce one or more fingers inside the casing when the release device renovation 1 is in operation, while allowing dust to be evacuated.
  • the evacuation outlet 6 comprises a through orifice 60 in the thickness of the body 40 of the casing and partial closing means 61 preventing the introduction of one or more fingers through the orifice.
  • the partial shutter means 61 are for example a grid or, as here, parallel bars spaced at a distance of at most 6 mm.
  • the casing 4 has a general polyhedron shape.
  • the body 40 of the casing has a polygonal shaped section.
  • the body 40 of the casing could have a circular section or a combination of curved and straight lines.
  • the casing 4 and the elongated body 2 are preferably separable.
  • the casing 4 is removable by removable fixing means 4' ( figures 4 And 6 ), for example of the clamp type.
  • the casing 4 is preferably adjustable in rotation relative to the shaft 3, in particular thanks to the collar 4'.
  • the side closure 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 rotation shaft 3.
  • the cheek 41 comprises the locking means 5 which are intended to guarantee the maintenance of the roller 10 on the shaft 3.
  • the locking means 5 comprise a locking part 50 capable of being movable in rotation at the same time as the roller when the latter is driven by the shaft 3, a rotating support 51, and preferably an elastic means 52 such as a spring to ensure elastic support of the locking part 50 against the hub 11 of the roller, and preferably partly inside the hub.
  • the locking part 50 forms a male member which is intended to be introduced into the hub 11 of the roller in the mounted position of the roller on the shaft 3 and in the closed position of the closing cheek 41.
  • the rotating support 51 is preferably a support equipped with a ball bearing.
  • the rotating support 51 is integral with the closing cheek 41, for example being trapped in the thickness of the cheek.
  • the rotating support 51 is fitted into a molded housing 41A formed in the plastic body of the cheek 41 and retained by a metal plate 41B attached to the internal face of the cheek (face facing the inside of the casing 4) and made integral for example by screwing.
  • the locking part 50 is assembled to the rotating support 51 in order to be able to rotate when it cooperates by insertion into the hub 11 of the roller and the latter is rotating.
  • the rotating support 51 comprises a threaded axis 53 on which the locking part 50 is fixed, for example using a screw 54 cooperating axially with the locking part 50 and screwed into the thread of the axis 53 (the part 50 being provided with a through hole to access the screw 54).
  • the locking part 50 is also capable of being translated perpendicularly to the general plane of the cheek 41, that is to say parallel to the rotation shaft 3 in the closed position of the cheek 41.
  • the translation is obtained via the spring 52 which is a coil spring and which is integral with the locking part 50 by being positioned between said locking part 50 and the support 51.
  • the spring 52 is positioned surrounding the axis 53.
  • the spring 52 comprises a first end which is retained in a groove 55 of the locking part 50, formed by a shoulder of the locking part, and a second opposite end which rests on the support 51.
  • the spring 52 is able to compress.
  • the locking part 50 is capable of being movable in translation when the cheek is closed and it is introduced into the hub 11 of the roller. More particularly, the locking part 50 can be compressed when it cooperates with a roller 10 in order to absorb the length gaps which may exist in commercial rollers, and guarantee that the locking part 50 will always rest against the roller to lock it in position on shaft 3.
  • the locking part 50 has its free end 50' for cooperation with the roller, which is chamfered.
  • the chamfer is inclined being convergent in the direction opposite to the cheek 41 of the casing, that is to say in the direction of the shaft 3 and therefore of the hub 11 of the roller in the closed position of the cheek 41.
  • This configuration in the form of a truncated cone participates in the guiding and introduction of the locking part 50 into the hub 11 of the roller when closing the cheek 41.
  • the introduction of the locking part 50 is even easier when the hub 11 of the roller has its entrance 11' also chamfered.
  • the cheek 41 preferably remains integral with the body 40 of the casing in its open position ( figures 1 to 3 ).
  • the closing cheek 41 is fixed to the body of the casing while being able to be movable in pivoting directly relative to the body 40 of the casing.
  • the side closing cheek 41 is fixed directly to the body 40 of the casing by a 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 assembly or disassembly of 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 is arranged on the periphery of the open face of the body 40 of the casing (externally to the body of the casing or integrated in a housing internal to the body of the casing; parallel or perpendicular to the rotation shaft).
  • the pivot 42 can be arranged at different locations on this periphery of the body 40 of the casing.
  • the pivot 42 is on the outer periphery and along the front side 40A of the casing.
  • the pivot 42 comprises a pivot axis 43 which is perpendicular to the shaft 3.
  • the pivot axis 43 is secured to the cheek 41 via lugs 44 and 45 spaced apart and secured to the edge of the body 40 of the casing and the screws of fixing 46 and 47.
  • the pivot axis 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 casing Opposite the pivot 42, on the rear edge 40B of the body 40 of the casing, the casing comprises a fastening system 7 to keep the closing cheek 41 closed.
  • the fastening system 7 is preferably a fastening system quick (which does not require any tools), for example a latch attachment system.
  • the latch 70 is secured to the body 40 of the casing, while the counter-hook 71 with which the latch 70 can cooperate is secured to the cheek 41.
  • the body of the cheek is made of plastic material, and its face internal is made up of the metal plate 41B which is provided, in the extension of the plane of the plate and projecting from the peripheral edge and outwards, with a metal tab constituting the counter-hook 71 of the quick-release fixing system.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pivots And Pivotal Connections (AREA)

Abstract

Dispositif de rénovation de surface (1) comportant un corps principal (2) qui loge des moyens électriques d'entraînement rotatif, un arbre de rotation (3) apte à tourner via lesdits moyens d'entraînement et destiné à porter au moins un élément cylindrique à surface active de rénovation (10) du type rouleau, des moyens de verrouillage (5) destinés à verrouiller le rouleau en position sur l'arbre, et un carter de protection (4) qui s'étend depuis le corps principal (2) et loge l'arbre de rotation (3), le carter (4) étant fermé à l'opposé du corps principal par une joue (41), caractérisé en ce que les moyens de verrouillage (5) du rouleau sont solidaires de la joue (41) et comprennent une pièce de verrouillage (50) qui est apte à tourner et est apte, en position fermée de la joue, à coopérer en appui contre le rouleau destiné à être monté sur l'arbre de rotation. De préférence, la pièce de verrouillage (50) est à appui élastique.Surface renovation device (1) comprising a main body (2) which houses electrical rotary drive means, a rotation shaft (3) capable of rotating via said drive means and intended to carry at least one cylindrical element with active roller-type renovation surface (10), locking means (5) for locking the roller in position on the shaft, and a protective casing (4) which extends from the main body (2) and houses the rotation shaft (3), the casing (4) being closed opposite the main body by a cheek (41), characterized in that the locking means (5) of the roller are integral with the cheek (41) and comprise a locking part (50) which is able to rotate and is able, in the closed position of the cheek, to cooperate in bearing against the roller intended to be mounted on the rotation shaft. Preferably, the locking part (50) is elastically supported.

Description

L'invention concerne le domaine de la rénovation de surfaces à partir d'outils portatifs électriques, généralement appelés satineuses.The invention relates to the field of surface renovation using portable electric tools, generally called polishing machines.

Les outils portatifs électriques de rénovation de surface comprennent un élément cylindrique rotatif du type brosse ou rouleau dont la surface active de frottement permet notamment de décaper, brosser, poncer, lustrer, nettoyer, ou polir, des petites ou moyennes surfaces telles que des surfaces métalliques, en bois, en brique, en plastique, ou encore du carrelage ou de la pierre. La surface active du rouleau est adaptée au type de surface à rénover ; elle est par exemple à base de feutre, ou de papier de verre (à surface continue ou sous la forme de bandelettes), ou encore dotée de poils de brossage en plastique ou métalliques, etc.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.

De manière connue, un tel outil de rénovation de surface à rouleau comporte un corps principal qui loge des moyens d'entraînement électrique du type moteur électrique, et dont une partie forme des moyens de préhension, un arbre à mouvement rotatif qui est connecté aux moyens d'entraînement et est destiné à porter au moins un rouleau, et des moyens de maintien du rouleau en position sur l'arbre, ainsi qu'un carter de protection qui est partiellement ouvert et entoure le rouleau selon un volume semi-cylindrique.In known manner, such a roller surface renovation tool comprises a main body which houses electric drive means of the electric motor type, and part of which forms gripping means, a rotary movement shaft which is connected to the means drive and is intended to carry at least one roller, and means for holding the roller in position on the shaft, as well as a protective casing which is partially open and surrounds the roller in a semi-cylindrical volume.

Les moyens de verrouillage du rouleau en position sur l'arbre sont bien entendu nécessaires du fait de la rotation du rouleau. Ces moyens de verrouillage sont usuellement constitués d'une rondelle et d'une vis de serrage qui coopèrent avec l'extrémité de l'arbre et en appui sur la face latérale du rouleau (une fois le rouleau disposé sur l'arbre).The means for locking the roller in position on the shaft are of course necessary due to the rotation of the roller. These locking means usually consist of a washer and a clamping screw which cooperate with the end of the shaft and rest on the side face of the roller (once the roller is positioned on the shaft).

Le carter vise à protéger l'utilisateur (et la zone environnante de travail) des projections de poussières et débris lors du fonctionnement de l'outil, c'est-à-dire lors de la rotation du rouleau sur une surface de travail. Le carter forme une coque semi-cylindrique qui s'étend de manière fermée depuis le corps principal de l'outil et au-dessus de l'arbre de rotation de façon à entourer le rouleau selon toute sa longueur et à mi-volume de celui-ci. Pour changer facilement le rouleau, de nombreux carters sont ouverts latéralement en vis-à-vis de l'extrémité de l'arbre rotatif. Toutefois, pour assurer une meilleure protection, certains outils présentent un carter qui comporte une joue latérale de fermeture en regard de l'extrémité libre de l'arbre de rotation, comme montré dans le document FR 3 062 791 .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 half volume of that -this. To easily change the roller, many casings are open laterally facing each other. from the end of the rotating shaft. However, to ensure better protection, certain tools have a casing which includes a side closing cheek facing the free end of the rotation shaft, as shown in the document FR 3 062 791 .

Néanmoins, si l'utilisation d'une joue latérale de protection est bien plus sécuritaire, le montage et le démontage du rouleau restent laborieux. D'une part, il est nécessaire de démonter/remonter la vis de serrage et la rondelle des moyens de verrouillage, ce qui ne participe pas à la rapidité de mise en oeuvre, et ces pièces rapportées peuvent aisément être égarées au démontage. D'autre part, la joue latérale est aujourd'hui fixée de manière amovible en plusieurs endroits par des systèmes d'attache tels que des vis papillon, ce qui exige là encore du temps de mise en oeuvre pour démonter et remonter la joue de fermeture, et nécessite parfois des outils manuels de montage et remontage comme une clé de serrage. En outre, l'utilisateur peut être distrait une fois la joue et les moyens de verrouillage désassemblés, en les posant parmi d'autres objets sur son établi de travail, et une fois qu'il doit remonter un rouleau, il peut avoir des difficultés à retrouver l'ensemble des pièces des moyens de verrouillage et de la joue de fermeture.However, although the use of a protective side panel is much safer, assembly and disassembly of the roller remains laborious. On the one hand, it is necessary to disassemble/reassemble the tightening screw and the washer of the locking means, which does not contribute to the speed of implementation, and these attached parts can easily be misplaced during disassembly. On the other hand, the side panel is today removably fixed in several places by fastening systems such as butterfly screws, which again requires implementation time to dismantle and reassemble the closing panel , and sometimes requires manual assembly and reassembly tools such as a wrench. In addition, the user may be distracted once the cheek and the locking means have been disassembled, by placing them among other objects on his work bench, and once he has to reassemble a roller, he may have difficulty to find all the parts of the locking means and the closing cheek.

L'invention a donc pour but de proposer un dispositif de rénovation de surface formant un outil portatif électrique, comprenant un carter de protection qui est doté d'une joue de fermeture latérale, le dispositif obviant aux inconvénients précités en procurant notamment une solution rapide de montage et de démontage du rouleau et du carter de protection, tout en garantissant un verrouillage du rouleau sur l'arbre de rotation. Le dispositif de rénovation de surface doit procurer un verrouillage rapide du rouleau.The invention therefore aims to propose a surface renovation device forming a portable electric tool, comprising a protective casing which is provided with a side closing cheek, the device obviating the aforementioned drawbacks by notably providing a rapid solution for assembly and disassembly of the roller and the protective casing, while guaranteeing locking of the roller on the rotation shaft. The surface renovation device must provide rapid locking of the roller.

Selon l'invention, le dispositif de rénovation de surface (formant un outil portatif électrique) comporte un corps principal qui loge des moyens électriques d'entrainement rotatif, un arbre de rotation apte à tourner via lesdits moyens d'entraînement et destiné à porter au moins un élément cylindrique à surface active de rénovation du type rouleau, des moyens de verrouillage destinés à verrouiller le rouleau en position sur l'arbre, et un carter de protection qui s'étend depuis le corps principal et loge l'arbre de rotation, le carter étant fermé à l'opposé du corps principal par une joue (le carter comporte un corps et une joue de fermeture), le dispositif étant caractérisé en ce que les moyens de verrouillage du rouleau sont solidaires de la joue du carter et comprennent une pièce dite de verrouillage qui est apte à tourner et, en position fermée de la joue, est apte à coopérer en appui contre le rouleau destiné à être monté sur l'arbre de rotation.According to the invention, the surface renovation device (forming a portable electric tool) comprises a main body which houses electrical rotary drive means, a rotation shaft capable of rotating via said drive means and intended to carry the minus one cylindrical element with an active renovation surface of the roller type, locking means intended to lock the roller in position on the shaft, and a protective casing which extends from the main body and houses the rotation shaft, the casing being closed opposite the main body by a cheek (the casing comprises a body and a closing cheek), the device being characterized in that the roller locking means are integral with the cheek of the casing and comprise a so-called locking piece which is suitable to rotate and, in the closed position of the cheek, is capable of cooperating in support against the roller intended to be mounted on the rotation shaft.

Ainsi, les moyens de verrouillage en étant solidaires de la joue du carter, coopèrent directement avec le rouleau lors de la fermeture de la joue, ce qui permet en une seule opération - la fermeture de la joue- de verrouiller le rouleau en place sur l'arbre. De plus, la pièce de verrouillage étant apte à tourner, le rouleau reste maintenu fermement en place tout en étant entraîné par l'arbre de l'outil. Le montage, comme le démontage du rouleau, sont très rapides puisque seule la joue du carter est à fermer ou à ouvrir. Le verrouillage du rouleau est par conséquent également rapide. Le verrouillage du rouleau est automatique à la fermeture de la joue.Thus, the locking means, being integral with the cheek of the casing, cooperate directly with the roller when closing the cheek, which allows in a single operation - closing the cheek - to lock the roller in place on the 'TREE. In addition, the locking part being able to rotate, the roller remains held firmly in place while being driven by the tool shaft. Assembly and disassembly of the roller are very quick since only the side of the casing has to be closed or opened. Locking of the roller is therefore also quick. The roller locks automatically when the cover is closed.

Selon une caractéristique, la pièce de verrouillage est montée sur un support tournant, en particulier un support à roulement à billes (ou un support équivalent à fonction tournante par entrainement mécanique). Le support à roulement à billes garantit une rotation uniforme et pérenne de la pièce de verrouillage.According to one characteristic, the locking part is mounted on a rotating support, in particular a ball bearing support (or an equivalent support with a rotating function by mechanical drive). The ball bearing support guarantees uniform and long-lasting rotation of the locking part.

Selon une autre caractéristique, la pièce de verrouillage est à appui élastique (contre le rouleau), de préférence les moyens de verrouillage comportent un ressort, en particulier un ressort à spires, qui est positionné entre la pièce de verrouillage et un support tournant de la pièce, le support tournant étant solidaire de la joue. Cette configuration à appui élastique permet d'absorber les éventuels jeux qui peuvent exister quant à la longueur de différents types de rouleaux. Cela permet de régler, de positionner, d'ajuster au mieux la pièce de verrouillage sur et/ou dans le moyeu du rouleau, et en outre de manière automatique.According to another characteristic, the locking part is supported elastically (against the roller), preferably the locking means comprise a spring, in particular a coil spring, which is positioned between the locking part and a rotating support of the part, the rotating support being integral with the cheek. This elastically supported configuration makes it possible to absorb any play that may exist regarding the length of different types of rollers. This makes it possible to adjust, position and adjust the locking part as best as possible on and/or in the roller hub, and moreover automatically.

Avantageusement, la pièce de verrouillage forme une pièce mâle qui est destinée à coopérer avec le moyeu du rouleau destiné à être positionné sur l'arbre de rotation du dispositif.Advantageously, the locking part forms a male part which is intended to cooperate with the hub of the roller intended to be positioned on the rotation shaft of the device.

Selon encore une autre caractéristique, la pièce de verrouillage présente son extrémité distale chanfreinée, en particulier la pièce de verrouillage présente son extrémité distale qui est de forme tronconique en étant convergente dans la direction opposée à la joue du carter (dans la direction de l'arbre et donc du moyeu du rouleau). Cette conception facilite le guidage par insertion de la pièce de verrouillage (forme mâle convergente) à l'intérieur du moyeu du rouleau. En outre, même lorsqu'un jeu existe au niveau du diamètre du moyeu, cette forme permet de coopérer avec le moyeu du rouleau et garantit par conséquent le maintien du rouleau.According to yet another characteristic, the locking part has its chamfered distal end, in particular the locking part has its distal end which is of frustoconical shape while being convergent in the direction opposite to the cheek of the casing (in the direction of the shaft and therefore the roller hub). This design facilitates guiding by inserting the locking part (converging male shape) inside the roller hub. Furthermore, even when play exists at the diameter of the hub, this shape allows it to cooperate with the roller hub and therefore guarantees the maintenance of the roller.

De préférence, la joue du carter est fixée au (corps du) carter via un pivot. Ainsi, la joue reste solidaire du corps du carter et s'ouvre/se ferme par pivotement. En variante, la joue du carter pourrait être amovible.Preferably, the cheek of the casing is fixed to the (body of the) casing via a pivot. Thus, the cheek remains attached to the body of the casing and opens/closes by pivoting. Alternatively, the casing cheek could be removable.

On entend par « pivot » au sens de l'invention une pièce constituant le support ou l'extrémité d'un axe de pivotement autour duquel est apte à tourner la joue de fermeture, le pivot solidarisant la joue au corps du carter sans possibilité que la joue ne se détache du carter. Le pivot assure une solidarisation directe de la joue au corps du carter et une inamovibilité de la joue par rapport au carter en position ouverte de la joue lors du montage ou du démontage du rouleau. Ainsi, la joue reste solidaire du corps du carter lors de son ouverture. Elle ne risque pas de tomber et ne peut être égarée. L'articulation par pivotement via un pivot est une solution de fabrication peu onéreuse, de conception robuste et discrète esthétiquement. De plus, le pivot permettant donc une solidarisation d'une pièce l'une contre l'autre et étant directement solidaire (intégré) au corps du carter, l'axe de pivotement de la joue n'est nullement déporté, ce qui confère un agencement compact et robuste, ainsi qu'un pivotement fiable. Par ailleurs, une telle conception permet une ouverture et une fermeture rapide de la joue, ce qui engendre un changement simple et rapide du rouleau. Enfin, l'articulation de la joue par pivot garantit le maintien de la joue même ouverte après le carter ; l'utilisateur ne peut qu'être obligé de fermer la joue pour utiliser le dispositif, ce qui est gage de sécurité pour l'utilisateur.By "pivot" in the sense of the invention is meant a part constituting the support or the end of a pivot axis around which the closing cheek is capable of rotating, the pivot securing the cheek to the body of the casing without the possibility that the cheek does not come off the crankcase. 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 during assembly or disassembly of the roller. Thus, 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. In addition, 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.

Dans un mode de réalisation de fixation de la joue, le pivot comprend un axe de pivotement qui est parallèle à l'arbre rotatif.In one embodiment of attaching the cheek, the pivot includes a pivot axis which is parallel to the rotating shaft.

Dans un autre mode de réalisation de fixation de la joue, le pivot comprend un axe de pivotement qui est perpendiculaire à l'arbre rotatif.In another embodiment of fixing the cheek, the pivot comprises a pivot axis which is perpendicular to the rotating shaft.

Dans un exemple de réalisation, le pivot forme l'extrémité d'un axe de pivotement qui coopère avec un logement intérieur au corps du carter.In an exemplary embodiment, the pivot forms the end of a pivot axis which cooperates with a housing inside the body of the casing.

Dans un autre exemple de réalisation, le pivot forme un axe de pivotement qui est logé sur l'extérieur du corps du carter.In another embodiment, the pivot forms a pivot axis which is housed on the outside of the body of the casing.

De préférence, la joue du carter est fixée d'un côté par un axe de pivotement, et du côté opposé par une fixation à attache rapide (ou par tout autre type de fixation, y compris par clippage). L'axe de pivotement peut être amovible si l'ensemble de la joue doit être démonté, en particulier pour mieux visualiser certains travaux de précision. Dans un exemple préféré, l'axe de pivotement est extérieur au corps du carter et fixé par vis, ce qui procure un assemblage simple et facilement démontable. La fixation à attache rapide est de préférence un système d'attache à grenouillère, en particulier l'attache (ou contre-crochet) étant solidaire de la joue tandis que la grenouillère est solidaire du corps du carter. On entend par « système à attache rapide », un système qui ne fait pas intervenir d'outil pour sa mise en oeuvre.Preferably, the cheek of the casing is fixed on one side by a pivot pin, and on the opposite side by a quick-release fixing (or by any other type of fixing, including by clipping). The pivot pin can be removable if the entire cheek needs to be dismantled, in particular to better visualize certain precision work. In a preferred example, the pivot axis is external to the body of the casing and fixed by screws, which provides a simple and easily removable assembly. The quick-release attachment is preferably a latch attachment system, in particular the attachment (or counter-hook) being secured to the cheek while the latch is secured to the body of the casing. By “quick-attach system” we mean a system which does not require any tool for its implementation.

De préférence, la joue de fermeture du carter comporte un corps en matière plastique, et une plaque métallique qui est solidaire de la face interne du corps de la joue et dont sont solidaires les moyens de verrouillage. De préférence, la face interne de la joue est entièrement recouverte de la plaque métallique qui peut comprendre des formes à géométrie de renfort. De plus, la plaque métallique peut être dotée d'une extension en saillie vers l'extérieur de la joue et formant un moyen d'attache pour la fermeture de la joue, notamment formant le contre-crochet d'une fixation à attache rapide, en particulier d'une fixation à grenouillère. En variante, la joue pourrait être totalement métallique ou en entièrement à base de matière plastique.Preferably, the closing cheek of the casing comprises a body made of plastic material, and a metal plate which is secured to the internal face of the body of the cheek and to which the locking means are secured. Preferably, the internal face of the cheek is entirely covered with the metal plate which may include shapes with reinforcing geometry. In addition, the metal plate can be provided with an extension projecting towards the outside of the cheek and forming an attachment means for closing the cheek, in particular forming the counter-hook of a quick-release fastener, in particular a latch attachment. Alternatively, the cheek could be completely metallic or entirely based on plastic material.

Selon encore une autre caractéristique, le corps du carter présente une section latérale fermée par la joue de fermeture, qui est de forme polygonale, ou circulaire, ou une combinaison de lignes droites et courbes. Le corps du carter forme notamment une demi-coque.According to yet another characteristic, the body of the casing has a lateral section closed by the closing cheek, which is of polygonal shape, or circular, or a combination of straight and curved lines. The body of the casing forms in particular a half-shell.

Selon encore une autre caractéristique, le carter comporte une sortie d'évacuation destinée à l'aspiration, la sortie d'évacuation pouvant comporter un conduit coudé et/ou pouvant être fermée par un moyen d'obturation tel qu'un bouchon amovible.According to yet another characteristic, the casing comprises an evacuation outlet intended for suction, the evacuation outlet being able to comprise a bent conduit and/or being able to be closed by a closing means such as a removable plug.

De préférence, la sortie d'évacuation des poussières comporte des moyens empêchant l'introduction d'un ou de doigts à l'intérieur du carter, en particulier la sortie d'évacuation présente un orifice traversant dans l'épaisseur du carter et des moyens partiels d'obturation empêchant l'introduction d'un ou de doigts à travers l'orifice, sous la forme d'une grille ou de barreaux parallèles et espacés d'une distance d'au plus 6 mm.Preferably, the dust evacuation outlet comprises means preventing the introduction of one or more fingers inside the casing, in particular the evacuation outlet has a through hole in the thickness of the casing and means partial shutters preventing the introduction of one or more fingers through the orifice, in the form of a grid or parallel bars spaced at a distance of at most 6 mm.

Selon encore une autre caractéristique, le dispositif de rénovation comporte un rouleau qui possède un moyeu dont au moins une extrémité distale est chanfreinée et coopère avec la pièce de verrouillage, ce qui facilite encore mieux le guidage et la coopération de la pièce de verrouillage dans le moyeu. De préférence, le dispositif comporte un rouleau qui possède un moyeu comprenant deux nervures longitudinales qui coopèrent directement avec deux rainures longitudinales dont est doté l'arbre de rotation, ce qui permet un montage très rapide du rouleau ; il n'y a pas besoin de clavettes comme c'est le cas habituellement.According to yet another characteristic, the renovation device comprises a roller which has a hub of which at least one distal end is chamfered and cooperates with the locking part, which makes it even easier to guide and cooperate the locking part in the hub. Preferably, the device comprises a roller which has a hub comprising two longitudinal ribs which cooperate directly with two longitudinal grooves with which the rotation shaft is provided, which allows very rapid assembly of the roller; there is no need for keys as is usually the case.

Dans la suite de la description, les termes « horizontal », « vertical », « supérieur », « inférieur », « haut », « bas », s'entendent en qualifiant des éléments du dispositif dans le cadre de l'utilisation normale du dispositif tenu par un utilisateur.In the remainder of the description, the terms "horizontal", "vertical", "upper", "lower", "top", "bottom", are understood to qualify elements of the device in the context of normal use of the device held by a user.

On entend dans la suite de la description par « outil électrique à rouleau », un outil électrique apte à entraîner en rotation un élément fonctionnel de forme cylindrique pour assurer une tâche de bricolage.In the remainder of the description, the term "roller electric tool" means an electric tool capable of rotating a functional element of cylindrical shape to carry out a DIY task.

La présente invention est maintenant décrite à l'aide d'exemples uniquement illustratifs et nullement limitatifs de la portée de l'invention, et à partir des illustrations jointes, dans lesquelles :

  • [Fig. 1] représente une vue schématique en perspective depuis l'arrière d'un exemple de réalisation d'un dispositif de rénovation de surface selon l'invention avec son carter fermé.
  • [Fig. 2] une vue en perspective de l'avant du dispositif de la figure 1, avec le carter ouvert.
  • [Fig. 3] est une vue de côté du dispositif des figures 1 et 2 avec la joue du carter grande ouverte, et montrant la face interne de la joue et le rouleau monté sur l'arbre rotatif.
  • [Fig. 4] est une vue en perspective et de dessus montrant l'arbre rotatif du dispositif et l'intérieur du carter avec sa joue fermée.
  • [Fig. 5] est une vue schématique partielle et en coupe de la joue du carter fermée avec les moyens de verrouillage en prise avec le moyeu du rouleau monté sur l'arbre rotatif du dispositif.
  • [Fig. 6] est une vue en perspective et de dessus de l'intérieur du carter seul.
  • [Fig. 7] est une vue en perspective d'un exemple préféré de rouleau à monter sur l'arbre rotatif d'un dispositif de rénovation de l'invention.
The present invention is now described using examples that are purely illustrative and in no way limiting the scope of the invention, and from the attached illustrations, in which:
  • [ Fig. 1 ] represents a schematic perspective view from the rear of an exemplary embodiment of a surface renovation device according to the invention with its closed casing.
  • [ Fig. 2 ] a perspective view of the front of the device of the figure 1 , with the crankcase open.
  • [ Fig. 3 ] is a side view of the device figures 1 and 2 with the casing cheek wide open, and showing the inner face of the cheek and the roller mounted on the rotating shaft.
  • [ Fig. 4 ] is a perspective and top view showing the rotating shaft of the device and the interior of the casing with its cheek closed.
  • [ Fig. 5 ] is a partial schematic sectional view of the cheek of the casing closed with the locking means engaged with the hub of the roller mounted on the rotating shaft of the device.
  • [ Fig. 6 ] is a perspective and top view of the interior of the crankcase alone.
  • [ Fig. 7 ] is a perspective view of a preferred example of roller to be mounted on the rotating shaft of a renovation device of the invention.

Le dispositif à fonction de rénovation 1 illustré à titre d'exemple nullement limitatif sur les figures 1 à 5 constitue un outil portatif électrique du type satineuse qui est destiné à rénover des surfaces. Le dispositif de rénovation 1 est un dispositif de rénovation à rouleau en étant doté de moyens adaptés à la rénovation de surface sous forme d'au moins un élément cylindrique 10 rotatif à surface active de rénovation, dit rouleau. Le rouleau 10 présente une surface active de rénovation sur l'ensemble de la périphérie de son corps cylindrique, cette surface étant dans un matériau adapté au type de surface à rénover.The device with renovation function 1 illustrated by way of non-limiting example on the figures 1 to 5 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 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.

Le dispositif de rénovation 1 comporte un corps principal 2 qui loge des moyens électriques d'entrainement rotatif et dont une partie constitue au moins un premier moyen de préhension 20, un arbre de rotation 3 qui est destiné à porter le rouleau 10, et un carter de protection 4 partiellement ouvert qui comprend un corps 40 enveloppant en partie ledit rouleau 10 et une joue 41 de fermeture latérale, ainsi que des moyens de verrouillage 5 de maintien en position du rouleau 10 sur l'arbre 3. Selon l'invention, les moyens de verrouillage 5 de maintien en position du rouleau sont solidaires de la joue 41 du carter 4 (figures 3 à 6). Les moyens de verrouillage 5 sont destinés à coopérer avec l'intérieur du moyeu 11 du rouleau 10. De préférence, le dispositif comporte en outre une sortie d'évacuation 6 (un orifice prolongé d'un conduit qui peut être coudé) destiné à être relié à un système d'aspiration pour aspirer les poussières et débris lors du fonctionnement de l'outil.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 rotation shaft 3 which is intended to carry the roller 10, and a casing protection 4 partially open which comprises a body 40 partly enveloping said roller 10 and a side closing cheek 41, as well as locking means 5 for holding the roller 10 in position on the shaft 3. According to the invention, the locking means 5 for holding the roller in position are integral with the cheek 41 of the casing 4 ( figures 3 to 6 ). The locking means 5 are intended to cooperate with the interior of the hub 11 of the roller 10. Preferably, the device further comprises an evacuation outlet 6 (an extended orifice of a conduit which can be bent) intended to be connected to a vacuum system to suck up dust and debris during tool operation.

Le corps principal 2 du dispositif est ici de forme longiligne. Son extrémité distale 20 sert de poignée et comprend un interrupteur 20A de marche/arrêt de l'outil. Un câble électrique ou tel qu'illustré schématiquement un manchon de câble électrique 20B permet d'alimenter électriquement le dispositif.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. An electric cable or, as shown schematically, an electric cable sleeve 20B makes it possible to electrically power the device.

De préférence, le dispositif de rénovation 1 comporte un second moyen de préhension 21. Le second moyen de préhension 21 facilite la manipulation du dispositif lors de l'utilisation. Dans le mode de réalisation illustré, le second moyen de préhension 21 est associé au corps principal 2 du dispositif, mais pourrait être associé au carter 4, ou encore au corps principal 2 et au carter 4 en étant à cheval.Preferably, the renovation device 1 comprises a second gripping means 21. The second gripping means 21 facilitates handling of the device during use. In the illustrated embodiment, 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.

Comme montré sur la figure 4, l'arbre de rotation 3 s'étend depuis le corps principal 2 et perpendiculairement à celui-ci. L'arbre de rotation 3 comprend une première extrémité qui est connectée à l'intérieur du corps principal 2 aux moyens électriques d'entrainement rotatif (connus en soi), et une seconde extrémité 30 opposée à la première extrémité et depuis laquelle est destiné à être emmanché le rouleau 10.As shown on the Figure 4 , the rotation shaft 3 extends from the main body 2 and perpendicular thereto. The rotation shaft 3 comprises a first end which is connected inside the main body 2 to the electrical rotary drive means (known per se), and a second end 30 opposite the first end and from which is intended to be fitted the roller 10.

De manière usuelle, l'arbre de rotation 3 (figures 3 à 5) comporte deux rainures longitudinales 31 opposées qui participent à l'engagement et au maintien du rouleau 10 sur l'arbre 3. Le rouleau 10 est montable/démontable autour de l'arbre de rotation 3 du dispositif. Le rouleau 10 est apte à coopérer via son moyeu 11 avec l'arbre 3. Dans un exemple préféré de rouleau (figures 5 et 7), il est utilisé un rouleau 10 conçu pour un montage rapide sur l'arbre 3. Le moyeu 11 du rouleau 10 illustré ici comporte des moyens intégrés 12 de coopération mutuelle, en l'occurrence des moyens mâles tels que deux nervures longitudinales opposées, qui coopèrent directement par engagement mutuel avec les rainures 31 de l'arbre 3. Pour verrouiller la fixation du rouleau 10, le dispositif de rénovation 1 comporte les moyens de verrouillage 5 de l'invention décrits plus loin, qui sont solidaires de la joue 41, et parfermeture de la joue, sont engagés (figure 5) dans le moyeu 11 tout en étant mis en butée contre la face latérale 13 du rouleau, comprimant ainsi latéralement le rouleau. De plus, le moyeu 11 du rouleau 10 peut présenter son entrée 11' chanfreinée vers l'intérieur du moyeu, comme illustré sur la figure 5 pour faciliter l'introduction des moyens de verrouillage 5.Usually, the rotation shaft 3 ( figures 3 to 5 ) has two opposite longitudinal grooves 31 which participate in the engagement and maintenance of the roller 10 on the shaft 3. The roller 10 can be assembled/disassembled around the rotation shaft 3 of the device. The roller 10 is able to cooperate via its hub 11 with the shaft 3. In a preferred example of roller ( figures 5 And 7 ), a roller 10 designed for rapid assembly on the shaft 3 is used. The hub 11 of the roller 10 illustrated here comprises integrated means 12 for mutual cooperation, in this case male means such as two opposite longitudinal ribs, which cooperate directly by mutual engagement with the grooves 31 of the shaft 3. To lock the fixing of the roller 10, the renovation device 1 comprises the locking means 5 of the invention described below, which are integral with the cheek 41 , and by closing the cheek, are engaged ( figure 5 ) in the hub 11 while being abutted against the side face 13 of the roller, thus laterally compressing the roller. In addition, the hub 11 of the roller 10 can have its entrance 11' chamfered towards the inside of the hub, as illustrated in the figure 5 to facilitate the introduction of the locking means 5.

Le carter 4 coiffe à distance une partie du rouleau 10. Le carter 4 n'est pas en contact direct avec le rouleau 10 pour ne pas le gêner dans son mouvement rotatif. Le carter 4 constitue une demi-coque. Il présente une forme creuse de volume permettant d'entourer le rouleau 10 pour correspondre au moins au demi-cylindre du rouleau. Le carter 4 protège et couvre, d'une part, la partie supérieure du rouleau 10 et l'une des faces latérales du rouleau tournée vers le corps principal 2 grâce au corps 40 du carter, et d'autre part, l'autre face 13 du rouleau grâce à la joue 41 de fermeture latérale. En position d'utilisation du dispositif, le rouleau 10 est caché pour l'utilisateur. Ainsi, les poussières issues du décapage lors du fonctionnement du rouleau restent confinées à l'intérieur du carter 4 pour retomber vers le bas ou de préférence être aspirées par des moyens d'aspiration non illustrés et destinés à être connectés au carter 4 via la sortie d'évacuation 6.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 side faces of the roller facing the main body 2 thanks to the body 40 of the casing, and on the other hand, the other face 13 of the roller thanks to the side closing cheek 41. In the device use position, the roller 10 is hidden from the user. Thus, 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 6.

Avantageusement, la sortie d'évacuation 6 est agencée sur la face arrière du corps du carter, en regard de l'utilisateur en position d'utilisation du dispositif. La sortie d'évacuation 6 peut comprendre un moyen d'obturation, par exemple un bouchon amovible, lorsque l'utilisateur ne désire pas connecter le dispositif à des moyens d'aspiration.Advantageously, the evacuation outlet 6 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 6 may include a closing means, for example a removable plug, when the user does not wish to connect the device to suction means.

De plus, la sortie d'évacuation 6 est avantageusement conçue pour éviter que l'utilisateur ne puisse introduire un ou des doigts à l'intérieur du carter lorsque le dispositif de rénovation 1 est en fonctionnement, tout en permettant l'évacuation des poussières. En regard de la figure 6, la sortie d'évacuation 6 comporte un orifice traversant 60 dans l'épaisseur du corps 40 du carter et des moyens partiels d'obturation 61 empêchant l'introduction d'un ou de doigts à travers l'orifice. Les moyens partiels d'obturation 61 sont par exemple une grille ou comme ici, des barreaux parallèles et espacés d'une distance d'au plus 6 mm.In addition, the evacuation outlet 6 is advantageously designed to prevent the user from being able to introduce one or more fingers inside the casing when the release device renovation 1 is in operation, while allowing dust to be evacuated. In view of the Figure 6 , the evacuation outlet 6 comprises a through orifice 60 in the thickness of the body 40 of the casing and partial closing means 61 preventing the introduction of one or more fingers through the orifice. The partial shutter means 61 are for example a grid or, as here, parallel bars spaced at a distance of at most 6 mm.

Dans l'exemple représenté, nullement limitatif, le carter 4 a une forme générale de polyèdre. Selon une vue transversale à la direction de l'arbre de rotation 3, le corps 40 du carter présente une section de forme polygonale. En variante, le corps 40 du carter pourrait présenter une section de forme circulaire ou encore une combinaison de lignes courbes et droites.In the example shown, which is in no way limiting, the casing 4 has a general polyhedron shape. In a view transverse to the direction of the rotation shaft 3, the body 40 of the casing has a polygonal shaped section. Alternatively, the body 40 of the casing could have a circular section or a combination of curved and straight lines.

Le carter 4 et le corps longiligne 2 sont de préférence dissociables. Le carter 4 est amovible par des moyens de fixation amovible 4' (figures 4 et 6), par exemple du type collier de serrage. Le carter 4 est de préférence réglable en rotation par rapport à l'arbre 3, notamment grâce au collier 4'.The casing 4 and the elongated body 2 are preferably separable. The casing 4 is removable by removable fixing means 4' ( figures 4 And 6 ), for example of the clamp type. The casing 4 is preferably adjustable in rotation relative to the shaft 3, in particular thanks to the collar 4'.

La joue 41 de fermeture latérale présente une section adaptée pour obturer la face latérale ouverte du corps 40 du carter, face perpendiculaire et en vis-à-vis de la seconde extrémité 30 de l'arbre de rotation 3.The side closure 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 rotation shaft 3.

En regard des figures 3 à 6, la joue 41 comporte les moyens de verrouillage 5 qui sont destinés à garantir le maintien du rouleau 10 sur l'arbre 3.In view of the figures 3 to 6 , the cheek 41 comprises the locking means 5 which are intended to guarantee the maintenance of the roller 10 on the shaft 3.

Les moyens de verrouillage 5 comportent une pièce de verrouillage 50 apte à être mobile en rotation en même temps que le rouleau lorsque celui-ci est entraîné par l'arbre 3, un support tournant 51, et de préférence un moyen élastique 52 tel qu'un ressort pour assurer un appui élastique de la pièce de verrouillage 50 contre le moyeu 11 du rouleau, et de préférence en partie à l'intérieur du moyeu.The locking means 5 comprise a locking part 50 capable of being movable in rotation at the same time as the roller when the latter is driven by the shaft 3, a rotating support 51, and preferably an elastic means 52 such as a spring to ensure elastic support of the locking part 50 against the hub 11 of the roller, and preferably partly inside the hub.

La pièce de verrouillage 50 forme un organe mâle qui est destiné à être introduit dans le moyeu 11 du rouleau en position montée du rouleau sur l'arbre 3 et en position fermée de la joue de fermeture 41.The locking part 50 forms a male member which is intended to be introduced into the hub 11 of the roller in the mounted position of the roller on the shaft 3 and in the closed position of the closing cheek 41.

Le support tournant 51 est de préférence un support doté d'un roulement à billes. Le support tournant 51 est solidaire de la joue de fermeture 41 en étant par exemple emprisonné dans l'épaisseur de la joue. En particulier, le support tournant 51 est emboîté dans un logement moulé 41A ménagé dans le corps en matière plastique de la joue 41 et retenu par une plaque métallique 41B rapportée sur la face interne de la joue (face en regard de l'intérieur du carter 4) et rendue solidaire par exemple par vissage. La pièce de verrouillage 50 est assemblée au support tournant 51 afin de pouvoir tourner lorsqu'elle coopère par insertion dans le moyeu 11 du rouleau et que ce dernier est en rotation. Pour la fixation, le support tournant 51 comprend un axe 53 taraudé sur lequel est fixée la pièce de verrouillage 50, par exemple à l'aide d'une vis 54 coopérant axialement avec la pièce de verrouillage 50 et vissée dans le taraudage de l'axe 53 (la pièce 50 étant dotée d'un orifice traversant pour accéder à la vis 54).The rotating support 51 is preferably a support equipped with a ball bearing. The rotating support 51 is integral with the closing cheek 41, for example being trapped in the thickness of the cheek. In particular, the rotating support 51 is fitted into a molded housing 41A formed in the plastic body of the cheek 41 and retained by a metal plate 41B attached to the internal face of the cheek (face facing the inside of the casing 4) and made integral for example by screwing. The locking part 50 is assembled to the rotating support 51 in order to be able to rotate when it cooperates by insertion into the hub 11 of the roller and the latter is rotating. For fixing, the rotating support 51 comprises a threaded axis 53 on which the locking part 50 is fixed, for example using a screw 54 cooperating axially with the locking part 50 and screwed into the thread of the axis 53 (the part 50 being provided with a through hole to access the screw 54).

De plus, la pièce de verrouillage 50 est également apte à être translatée perpendiculairement au plan général de la joue 41, c'est-à-dire parallèlement à l'arbre de rotation 3 en position fermée de la joue 41. La translation est obtenue via le ressort 52 qui est un ressort à spires et qui est solidaire de la pièce de verrouillage 50 en étant positionné entre ladite pièce de verrouillage 50 et le support 51. Le ressort 52 est positionné en entourant l'axe 53. Le ressort 52 comprend une première extrémité qui est retenue dans une gorge 55 de la pièce de verrouillage 50, formée par un épaulement de la pièce de verrouillage, et une seconde extrémité opposée qui repose sur le support 51. Le ressort 52 est apte à se comprimer. Ainsi, la pièce de verrouillage 50 est apte à être mobile en translation lors de la fermeture de la joue et son introduction dans le moyeu 11 du rouleau. Plus particulièrement, la pièce de verrouillage 50 peut se comprimer lorsqu'elle coopère avec un rouleau 10 afin d'absorber les jeux de longueur qui peuvent exister dans les rouleaux du commerce, et garantir que la pièce de verrouillage 50 sera toujours en appui contre le rouleau pour le verrouiller en position sur l'arbre 3.In addition, the locking part 50 is also capable of being translated perpendicularly to the general plane of the cheek 41, that is to say parallel to the rotation shaft 3 in the closed position of the cheek 41. The translation is obtained via the spring 52 which is a coil spring and which is integral with the locking part 50 by being positioned between said locking part 50 and the support 51. The spring 52 is positioned surrounding the axis 53. The spring 52 comprises a first end which is retained in a groove 55 of the locking part 50, formed by a shoulder of the locking part, and a second opposite end which rests on the support 51. The spring 52 is able to compress. Thus, the locking part 50 is capable of being movable in translation when the cheek is closed and it is introduced into the hub 11 of the roller. More particularly, the locking part 50 can be compressed when it cooperates with a roller 10 in order to absorb the length gaps which may exist in commercial rollers, and guarantee that the locking part 50 will always rest against the roller to lock it in position on shaft 3.

De préférence, la pièce de verrouillage 50 présente sa terminaison libre 50' de coopération avec le rouleau, qui est chanfreinée. Le chanfrein est incliné en étant convergent dans la direction opposée à la joue 41 du carter, c'est-à-dire dans la direction de l'arbre 3 et donc du moyeu 11 du rouleau en position fermée de la joue 41. Cette configuration en forme de tronc de cône participe au guidage et à l'introduction de la pièce de verrouillage 50 dans le moyeu 11 du rouleau lors de la fermeture de la joue 41. Avantageusement, l'introduction de la pièce de verrouillage 50 est encore plus facile lorsque le moyeu 11 du rouleau présente son entrée 11' également chanfreinée.Preferably, the locking part 50 has its free end 50' for cooperation with the roller, which is chamfered. The chamfer is inclined being convergent in the direction opposite to the cheek 41 of the casing, that is to say in the direction of the shaft 3 and therefore of the hub 11 of the roller in the closed position of the cheek 41. This configuration in the form of a truncated cone participates in the guiding and introduction of the locking part 50 into the hub 11 of the roller when closing the cheek 41. Advantageously, the introduction of the locking part 50 is even easier when the hub 11 of the roller has its entrance 11' also chamfered.

Par ailleurs, concernant l'accouplement de la joue 41 de fermeture au corps du carter 4, la joue 41 reste de préférence solidaire du corps 40 du carter dans sa position ouverte (figures 1 à 3). La joue de fermeture 41 est fixée au corps du carter en étant apte à être mobile en pivotement directement par rapport au corps 40 du carter. La joue latérale de fermeture 41 est fixée directement sur le corps 40 du carter par un pivot 42. La joue latérale de fermeture 41 est donc solidaire du corps 40 du carter grâce au pivot 42 qui assure le pivotement en rotation de la joue 41 tout en garantissant une inamovibilité de la joue une fois ouverte pour le montage ou le démontage du rouleau 10. Le pivot 42 est en bordure ou bordure immédiate de la périphérie du corps 40 du carter.Furthermore, concerning the coupling of the closing cheek 41 to the body of the casing 4, the cheek 41 preferably remains integral with the body 40 of the casing in its open position ( figures 1 to 3 ). The closing cheek 41 is fixed to the body of the casing while being able to be movable in pivoting directly relative to the body 40 of the casing. The side closing cheek 41 is fixed directly to the body 40 of the casing by a 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 assembly or disassembly of the roller 10. The pivot 42 is on the edge or immediate edge of the periphery of the body 40 of the casing.

Le pivot 42 est agencé en périphérie de la face ouverte du corps 40 du carter (extérieurement au corps du carter ou intégré dans un logement interne au corps du carter ; parallèlement ou perpendiculairement à l'arbre de rotation). Le pivot 42 peut être agencé à différents endroits de cette périphérie du corps 40 du carter. Ici, le pivot 42 est en périphérie extérieure et le long du côté avant 40A du carter. Le pivot 42 comporte un axe de pivotement 43 qui est perpendiculaire à l'arbre 3. L'axe de pivotement 43 est solidaire de la joue 41 via des oreilles 44 et 45 espacées et solidaires du bord du corps 40 du carter et des vis de fixation 46 et 47. L'axe de pivotement 43 est disposé entre les deux oreilles 44 et 45 et maintenu solidaire par les vis de fixation 46 et 47 qui passent à travers les oreilles respectives 44 et 45 et se vissent dans chacune des extrémités taraudées de l'axe de pivotement 43.The pivot 42 is arranged on the periphery of the open face of the body 40 of the casing (externally to the body of the casing or integrated in a housing internal to the body of the casing; parallel or perpendicular to the rotation shaft). The pivot 42 can be arranged at different locations on this periphery of the body 40 of the casing. Here, the pivot 42 is on the outer periphery and along the front side 40A of the casing. The pivot 42 comprises a pivot axis 43 which is perpendicular to the shaft 3. The pivot axis 43 is secured to the cheek 41 via lugs 44 and 45 spaced apart and secured to the edge of the body 40 of the casing and the screws of fixing 46 and 47. The pivot axis 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.

A l'opposé du pivot 42, sur le bord arrière 40B du corps 40 du carter, le carter comporte un système d'attache 7 pour maintenir fermée la joue de fermeture 41. Le système d'attache 7 est de préférence un système à attache rapide (qui ne nécessite aucun outil), par exemple un système d'attache à grenouillère. Avantageusement, la grenouillère 70 est solidaire du corps 40 du carter, tandis que le contre-crochet 71 avec lequel peut coopérer la grenouillère 70 est solidaire de la joue 41. De préférence, le corps de la joue est en matière plastique, et sa face interne est constituée de la plaque métallique 41B qui est dotée dans le prolongement du plan de la plaque et en saillie du bord périphérique et vers l'extérieur, d'une patte métallique constituant le contre-crochet 71 du système de fixation à attache rapide.Opposite the pivot 42, on the rear edge 40B of the body 40 of the casing, the casing comprises a fastening system 7 to keep the closing cheek 41 closed. The fastening system 7 is preferably a fastening system quick (which does not require any tools), for example a latch attachment system. Advantageously, the latch 70 is secured to the body 40 of the casing, while the counter-hook 71 with which the latch 70 can cooperate is secured to the cheek 41. Preferably, the body of the cheek is made of plastic material, and its face internal is made up of the metal plate 41B which is provided, in the extension of the plane of the plate and projecting from the peripheral edge and outwards, with a metal tab constituting the counter-hook 71 of the quick-release fixing system.

Claims (12)

Dispositif de rénovation de surface (1) comportant un corps principal (2) qui loge des moyens électriques d'entrainement rotatif, un arbre de rotation (3) apte à tourner via lesdits moyens d'entraînement et destiné à porter au moins un élément cylindrique à surface active de rénovation (10) du type rouleau, des moyens de verrouillage (5) destinés à verrouiller le rouleau en position sur l'arbre, et un carter de protection (4) qui s'étend depuis le corps principal (2) et loge l'arbre de rotation (3), le carter (4) étant fermé à l'opposé du corps principal par une joue (41), caractérisé en ce que les moyens de verrouillage (5) du rouleau sont solidaires de la joue (41) et comprennent une pièce de verrouillage (50) qui est apte à tourner et est apte, en position fermée de la joue, à coopérer en appui contre le rouleau destiné à être monté sur l'arbre de rotation.Surface renovation device (1) comprising a main body (2) which houses electrical rotary drive means, a rotation shaft (3) capable of rotating via said drive means and intended to carry at least one cylindrical element with active roller type renovation surface (10), locking means (5) for locking the roller in position on the shaft, and a protective casing (4) which extends from the main body (2) and houses the rotation shaft (3), the casing (4) being closed opposite the main body by a cheek (41), characterized in that the locking means (5) of the roller are integral with the cheek (41) and comprise a locking part (50) which is able to rotate and is able, in the closed position of the cheek, to cooperate in bearing against the roller intended to be mounted on the rotation shaft. Dispositif selon la revendication 1, caractérisé en ce que la pièce de verrouillage (50) est montée sur un support tournant (51), en particulier un support à roulement à billes.Device according to claim 1, characterized in that the locking part (50) is mounted on a rotating support (51), in particular a ball bearing support. Dispositif selon la revendication 1 ou 2, caractérisé en ce que la pièce de verrouillage (50) est à appui élastique, de préférence les moyens de verrouillage (5) comportent un ressort (52), en particulier un ressort à spires, qui est positionné entre la pièce de verrouillage (50) et un support tournant (51) de la pièce, le support tournant (51) étant solidaire de la joue (41).Device according to claim 1 or 2, characterized in that the locking part (50) is elastically supported, preferably the locking means (5) comprise a spring (52), in particular a coil spring, which is positioned between the locking part (50) and a rotating support (51) of the part, the rotating support (51) being integral with the cheek (41). Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la pièce de verrouillage (50) forme une pièce mâle qui est destinée à coopérer avec le moyeu (11) du rouleau (10) destiné à être positionné sur l'arbre de rotation (3).Device according to any one of the preceding claims, characterized in that the locking part (50) forms a male part which is intended to cooperate with the hub (11) of the roller (10) intended to be positioned on the shaft of rotation (3). Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la pièce de verrouillage (50) présente son extrémité distale chanfreinée, en particulier la pièce de verrouillage présente son extrémité distale qui est de forme tronconique en étant convergente dans la direction opposée à la joue (41).Device according to any one of the preceding claims, characterized in that the locking part (50) has its distal end chamfered, in particular the locking part has its distal end which is of frustoconical shape while being convergent in the direction opposite to the cheek (41). Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la joue (41) est fixée au carter (4) via un pivot (42).Device according to any one of the preceding claims, characterized in that the cheek (41) is fixed to the casing (4) via a pivot (42). Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la joue (41) est fixée d'un côté par un axe de pivotement (42), et du côté opposé par une fixation à attache rapide (7), de préférence un système d'attache à grenouillère.Device according to any one of the preceding claims, characterized in that the cheek (41) is fixed on one side by a pivot axis (42), and on the opposite side by a quick-release fastener (7), preferably a latch attachment system. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la joue (41) comporte un corps en matière plastique, et une plaque métallique (41B) qui est solidaire de la face interne du corps de la joue et dont sont solidaires les moyens de verrouillage, de préférence la face interne de la joue est entièrement recouverte de la plaque métallique (41B) qui peut comprendre des formes à géométrie de renfort.Device according to any one of the preceding claims, characterized in that the cheek (41) comprises a body made of plastic material, and a metal plate (41B) which is secured to the internal face of the body of the cheek and to which the locking means, preferably the internal face of the cheek is entirely covered with the metal plate (41B) which may include shapes with reinforcing geometry. Dispositif selon la revendication précédente, caractérisé en ce que la plaque métallique (41B) est dotée d'une extension (71) en saillie vers l'extérieur de la joue et formant un moyen d'attache pour la fermeture de la joue, notamment formant le contre-crochet d'une fixation à attache rapide, en particulier d'une fixation à grenouillère.Device according to the preceding claim, characterized in that the metal plate (41B) is provided with an extension (71) projecting towards the outside of the cheek and forming an attachment means for closing the cheek, in particular forming the counter-hook of a quick-release binding, in particular a toggle binding. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le carter (4) comporte une sortie d'évacuation (6) destinée à l'aspiration, la sortie d'évacuation pouvant comporter un conduit coudé et/ou pouvant être fermée par un moyen d'obturation tel qu'un bouchon amovible, de préférence la sortie d'évacuation (6) comporte des moyens (61) empêchant l'introduction d'un ou de doigts à l'intérieur du carter.Device according to any one of the preceding claims, characterized in that the casing (4) comprises an evacuation outlet (6) intended for suction, the evacuation outlet being able to comprise a bent conduit and/or being able to be closed by a closing means such as a removable plug, preferably the evacuation outlet (6) comprises means (61) preventing the introduction of one or more fingers inside the casing. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comporte un rouleau (10) qui possède un moyeu (11) dont au moins une extrémité distale est chanfreinée et coopère avec la pièce de verrouillage (50).Device according to any one of the preceding claims, characterized in that it comprises a roller (10) which has a hub (11) of which at least one distal end is chamfered and cooperates with the locking part (50). Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comporte un rouleau (10) qui possède un moyeu (11) comprenant deux nervures longitudinales (12) qui coopèrent directement avec deux rainures longitudinales (31) dont est doté l'arbre de rotation (3).Device according to any one of the preceding claims, characterized in that it comprises a roller (10) which has a hub (11) comprising two longitudinal ribs (12) which cooperate directly with two longitudinal grooves (31) with which the rotation shaft (3).
EP23159360.9A 2022-03-08 2023-03-01 Quick-lock roller surface renovation device Pending EP4241920A1 (en)

Applications Claiming Priority (2)

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FR2202008A FR3125734B3 (en) 2022-03-08 2022-03-08 SURFACE RENOVATION DEVICE AND ITS PROTECTIVE COVER
FR2202894A FR3134023B1 (en) 2022-03-30 2022-03-30 SURFACE RENOVATION DEVICE WITH QUICK ROLLER LOCKING

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US20120156974A1 (en) * 2010-12-16 2012-06-21 Kundel Jr Robert Surface preparation apparatus
FR3062791A1 (en) 2017-02-13 2018-08-17 Far Group Europe DEVICE FOR RENOVATING SURFACE.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120156974A1 (en) * 2010-12-16 2012-06-21 Kundel Jr Robert Surface preparation apparatus
FR3062791A1 (en) 2017-02-13 2018-08-17 Far Group Europe DEVICE FOR RENOVATING SURFACE.

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