EP3482879A1 - Roller with functional surface for a power tool and power tool with such a roller - Google Patents
Roller with functional surface for a power tool and power tool with such a roller Download PDFInfo
- Publication number
- EP3482879A1 EP3482879A1 EP18205101.1A EP18205101A EP3482879A1 EP 3482879 A1 EP3482879 A1 EP 3482879A1 EP 18205101 A EP18205101 A EP 18205101A EP 3482879 A1 EP3482879 A1 EP 3482879A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- hub
- shaft
- tool
- central portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000000295 complement effect Effects 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims description 15
- 239000004033 plastic Substances 0.000 claims description 15
- 238000009418 renovation Methods 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 238000000465 moulding Methods 0.000 claims description 5
- 229920002994 synthetic fiber Polymers 0.000 claims description 3
- 229920000914 Metallic fiber Polymers 0.000 claims description 2
- 239000000463 material Substances 0.000 description 7
- 239000000835 fiber Substances 0.000 description 3
- 230000001680 brushing effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
- B24D13/02—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery
- B24D13/12—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery comprising assemblies of felted or spongy material, e.g. felt, steel wool, foamed latex
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
- B24D13/02—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery
Definitions
- the invention relates to the field of power tools using a cylindrical functional element such as a roller or a brush, the cylindrical functional element being able to be removably mounted on a rotary shaft of the tool.
- the invention will be more particularly described with respect to a portable surface renovation device or not, without being limited thereto. It is applicable to any electrical device / tool with a long, slender rotary shaft on which a functional element / accessory of elongated shape is to be removably mounted so as to ensure its rotation, the functional element having a functional outer surface of DIY.
- a surface renovation device is also called surface renovator.
- the surface remodelor is a tool for stripping, brushing, and remodeling surfaces, such as wood or metal surfaces, using a rotating cylindrical member such as a brush or a rotating roller.
- roller is understood to mean any roller, brush, cylindrical element having a functional external surface, such as an active friction surface that is adapted to the type of surface to be renovated.
- an active friction surface of the roller may be based on felt, or abrasive paper (with continuous surface or in the form of strips), or with plastic or metal brushing bristles, etc.
- a roller surface renovation tool comprises, in a known manner, a body housing electrical drive means of the electric motor type, and whose distal end forms gripping means, and transversely to the body, an elongated rotary shaft on which is removably mounted at least one rotary cylindrical roller-type renovation element, the roller being rotatable through the rotary shaft driven by the electrical drive means; a safety cover is generally also provided to partially cover the roller.
- the roller has a longitudinal central recess forming a hub
- the shaft of the tool is provided with two opposite grooves
- two longitudinal keys reported that are complementary shape to the grooves to be inserted into said grooves of the shaft when the hub of the roller is associated with the shaft.
- the assembly of a roll is done in the following way: the hub of the roll is threaded on and around the shaft until it comes into abutment near the proximal end of the shaft (body side of the tool), then the two keys are slid into the grooves, which secures the roller to the shaft, and finally a washer and a clamping screw are fixed on the free end of the shaft to lock in position the roller .
- This removable fastening design has drawbacks. In particular, it is not so fast to implement because it requires to put in place the keys and bolt the end of the shaft. In addition, the keys are patches that can easily be misplaced.
- the invention therefore aims to overcome in particular the aforementioned drawbacks by providing a roller for power tool rotary drive of said roller, which allows to be easy and quick to assemble and disassemble on the tool, regardless of the type of roller with a metal or plastic hub, and the number of rollers to be mounted consecutively on the same shaft, while ensuring effective attachment of the roller on the shaft of the tool.
- the invention also relates to an electric tool equipped with such a roller, in particular a roll surface renovation device.
- the term "electric roller tool” is intended to mean an electric tool capable of rotating a functional element of cylindrical shape to provide a do-it-yourself task.
- the functional surface roller for rotary drive electric tool comprises a hub whose hollow cylindrical body has a hollow central portion which is intended to constitute the mounting portion (contact) of the roller on the tool to which is intended for the roller, characterized in that the central portion has on its inner face male means of cooperation by mutual engagement to the mounting of the roller.
- the male means are intended to cooperate directly with means of complementary female form of a rotary shaft of the tool on which is intended to be mounted hub.
- inner face of the central part the face intended to be direct contact with a rotary shaft of the tool on which is intended to be mounted the hub.
- the mutual engagement cooperation means are means integrated in the body of the hub.
- integrated means means means that form a unitary assembly (preferably irremovable) at the output of the roll, a unitary assembly with the body of which they are integral, unlike reported means which are independent.
- the means of cooperation by mutual commitment form an integral part of the roller body at the end of manufacture of the roll. Therefore, the roll is marketed with said interengaging mating engagement means integral with the roll body for mounting the roll on the tool by directly joining the roll without the need for bringing back independent fasteners.
- the male means are irremovable.
- the mutual engagement means extend longitudinally to the hollow central portion of the hub, particularly all along the hollow portion while being recessed (inwardly hollow) relative to the hubbands.
- the male means of mutual engagement cooperation comprise two diametrically opposed longitudinal ribs projecting (radially) from the inner face towards the hollow interior of the central part of the hub.
- the central portion of the hub with the engagement engagement means and the remainder of the hub body form a one-piece plastic assembly, particularly made by molding.
- the hub comprises a peripheral part which envelopes and is integral with the central part, the peripheral part being made of metal while the central part is made of plastic preferably manufactured by molding and glued to the peripheral part in metal.
- the hub (the hub body) may have recesses in its thickness.
- the recesses extend longitudinally to the hub body and open outwardly at the two opposite (lateral) ends of the hub.
- the roller has a functional outer surface forming an active friction surface, in particular a surface renovation such as based on synthetic and / or metallic fibers, or abrasive paper.
- the invention also relates to a roller-type rotary functional element / accessory electric tool, particularly of the surface-renewal function type, comprising a rotary-drive elongated shaft which is provided with female cooperation means for mounting the at least one roller, and the tool comprising at least one roller of the invention, the means for cooperation by mutual engagement of the roller cooperating with said means for cooperating with the shaft in complementary forms.
- the tool comprises locking means ensuring the holding in position of the roller, in particular lateral clamping means such as by bolting which are arranged at the free end of the shaft once said at least one roller in position on the tree.
- the locking means may be associated with the mutual engagement means (male and / or female), providing a clipping function.
- lateral in the following description, the qualifier relative to a plane transverse to the longitudinal axis of the roller or the shaft of the tool.
- the shaft of the tool comprises two diametrically opposed longitudinal grooves
- said at least one roller comprises two opposite longitudinal ribs (symmetrically with respect to the longitudinal axis of the hub) as male means of mutual engagement cooperation, which cooperate with (are engaged in) respectively the two opposite grooves of the shaft.
- the rotary drive electric tool 1 of the invention illustrated on the Figures 1 and 2 is an electric roller tool 2 for driving in rotation at high speed the roller 2 having a functional surface 20.
- this tool is a surface renovator, the roller 2 presenting its functional surface 20 as an active renovation surface.
- the figure 1 has been simplified by not drawing the guard, which is usually arranged at a distance and above the roller for this type of tool, to hide the roll to the user to prevent it from receiving dust from pickling during operation of the roll.
- the tool 1 comprises at least one elongate body 10 housing electrical rotary drive means such as an electric motor and constituting, by one of its distal ends 11, a means for gripping the tool, and a shaft 12 ( Figures 2 and 3 ) the opposite of the end 11 and adapted to be rotated by the engine.
- the shaft 12 extends transversely to the elongated body 10. It is of elongated shape and comprises means for cooperation for mounting / securing the roll, which are formed of two longitudinal grooves 13A and 13B symmetrically opposite to the longitudinal axis of the tree.
- the tool 1 comprises at least one roller 2 removably mounted on the shaft 12.
- the tool generally comprises two rollers mounted consecutively on the shaft.
- the roller 2 has its active surface 20 for renovation over the entire periphery of its cylindrical body, this surface being in a material adapted to the type of surface to be renovated.
- the roller 2 is intended to be changed when its active surface 20 is worn.
- the roller 2 comprises a hub 3 allowing said roller to be threaded on the shaft 12.
- the hub 3 comprises integrated mutual cooperation means 30A, 30B, in this case male means, which cooperate directly by mutual engagement with cooperation means integrated into the shaft 12, in this case with the grooves 13A and 13B of the shaft.
- the mutual engagement cooperation means 30A, 30B of the roller and the cooperating means 13A, 13B of the shaft are of complementary shape.
- the mutual cooperation means 30A, 30B and 13A, 13B make it possible to secure the roller 2 to the shaft 12.
- the tool 1 comprises clamping means 4 ( figure 1 ), such as a washer 40 and a nut 41, which are screwed onto the free end 12A of the shaft via a bore 12B, thereby compressing the roll 2 laterally.
- the male means 30A, 30B are arranged on the inner face 3 'of the hollow longitudinal central portion 31.
- the roller 2 and therefore the hub 3 have a length for example of 100 or 200 mm.
- the tool has two rollers 2 abutted at one of their side faces.
- FIGS 4A and 6A respectively illustrate two types 2A and 2B of the roller according to the invention, the material or materials constituting the hub 3 being different depending on the material of the active surface 20.
- the first type of roller 2A is a roller whose hub 3 is made of a one-piece body made entirely of plastic material comprising a hollow cylindrical central portion 31 ( Figures 4A, 4B and 5 ), while the active surface 20 is synthetic fibers or strips of sandpaper, the fibers or strips being directly adhered to the outer plastic surface 31A of the hub.
- roller 2B ( Figures 6A, 6B and 7 ) is a roller which has an active surface 20 of fibers / metal filaments, while the hub 3 is in two parts, a first hollow cylindrical central part 32 ( Figure 6B ) which is made of plastic, and a second part or peripheral part 33 ( Figures 6A and 7 ) which surrounds the central portion 32 and is made of metal, the metal fibers being in particular crimped onto the outer surface 33A of the second portion 33.
- the peripheral portion 33 constitutes a hollow metal cylinder with a smooth internal surface 33B without protruding against which is bonded the outer surface 32A of the central portion 32.
- the male means 30A, 30B of cooperation for mounting the roller are arranged on the inner face 3 'of the central portion 32.
- the central portion 31, 32 of each type of hub 3 is made of plastic, and comprises / integrates the ribs 30A and 30B on its inner face 3 'intended to cooperate directly with the shaft of the tool .
- the male means are molded from the central portion.
- the Figure 4B shows the embodiment of the hub 3 whose body is entirely molded plastic; the diameter of the hub 3 made entirely of plastic is for example of the order of 50 mm.
- the body advantageously has in its thickness along the entire length of the cylindrical body, between its central portion 31 and its outer surface 31A, recesses 34.
- the recesses 34 make it possible to save manufacturing material cost, and lessen the roller weight, participating in a better rotary drive.
- These recesses are arranged symmetrically with respect to the longitudinal axis of the cylindrical body of the hub.
- the figure 8 illustrates an alternative embodiment of the hub 3 of plastic with recesses 34 of different shape.
- the hub 3 As for the hub 3 based on metal ( Figures 6A, 6B and 7 ), once the central portion 32 of plastic material manufactured as illustrated on the Figure 6B , it is secured by its outer surface 32A of the inside 33B of the metal cylinder of the peripheral portion 33, for example by gluing.
- the thickness e of the central part 32 ( Figure 6B ) can be reduced, for example of the order of 1.5 mm.
- the diameter of the central portion is for example of the order of 22 mm.
- the central portion 32 thus constitutes a cylindrical interface piece integrated into the hub and provided with the engagement ribs 30A and 30B with the shaft of the tool.
- each central portion 31, 32 of the hub 3 thus comprises two longitudinal ribs 30A, 30B diametrically opposed facing each other towards the hollow interior of said central portion.
- the shape of the ribs 30A and 30B has a form of mutual cooperation with that of the grooves 13A and 13B of the shaft 12.
- the grooves 13A and 13B of the shaft have a U-section.
- the hub 3 of the roller of the invention therefore has male shapes (ribs 30A and 30B) to cooperate with the female shapes (grooves 13A and 13B) of the shaft 12; this embodiment effectively makes it possible to cooperate with rotary shafts existing on the market which are usually equipped with female shapes.
- the ribs 30A and 30B of the central portion 31, 32 of each hub are obtained by molding the body 30 or the central portion 32 of plastic.
- the dimensions of the ribs 30A and 30B are designed so that the ribs cooperate with the grooves 13A and 13B in a slight clearance, preferably of the order of 0.4 mm for each rib / groove.
- the ribs 30A and 30B preferably extend along the entire length of the hub 3.
- the ribs 30A and 30B of the central portion 32 ( Figure 6B ) which are internal to the cylindrical body do not protrude from the side faces / end edges 35 of said central portion 32 to avoid, if on the contrary they are flush with the edges, any risk of friction of the ribs of two faces side opposite two respective rollers which would be abutted to each other, to ensure a rotational drive without discomfort of the two rollers.
- the ribs 30A and 30B are recessed towards the inside of the hub with respect to each edge / lateral face 35.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Portable Nailing Machines And Staplers (AREA)
Abstract
Rouleau (2) à surface fonctionnelle pour outil électrique à entraînement rotatif, comportant un moyeu (3) dont le corps cylindrique creux comportant une partie centrale creuse (31) qui est destinée à constituer la partie de montage (de contact) du rouleau sur l'outil auquel est destiné le rouleau, caractérisé en ce que la partie centrale (31) comporte des moyens mâles de coopération par engagement mutuel (30A, 30B) aptes et destinés à coopérer avec des moyens femelles de forme complémentaire (13A, 13B) d'un arbre (12) rotatif de l'outil sur lequel est destiné à être monté le moyeu.Roller (2) with a functional surface for a power tool with rotary drive, comprising a hub (3) whose hollow cylindrical body has a hollow central portion (31) which is intended to constitute the mounting portion (contact) of the roll on the tool for which the roller is intended, characterized in that the central portion (31) comprises male interengaging engagement means (30A, 30B) adapted and adapted to cooperate with female means of complementary shape (13A, 13B). a rotating shaft (12) of the tool on which the hub is to be mounted.
Description
L'invention concerne le domaine des outils électriques utilisant un élément fonctionnel cylindrique tel qu'un rouleau ou une brosse, l'élément fonctionnel cylindrique étant apte à être monté de manière amovible sur un arbre rotatif de l'outil.The invention relates to the field of power tools using a cylindrical functional element such as a roller or a brush, the cylindrical functional element being able to be removably mounted on a rotary shaft of the tool.
L'invention sera plus particulièrement décrite en regard d'un dispositif de rénovation de surface portatif ou non, sans toutefois y être limitée. Elle s'applique à tout dispositif/outil électrique doté d'un arbre rotatif longiligne et sur lequel est destiné à être monté de manière amovible un élément fonctionnel/un accessoire de forme allongée de sorte à assurer sa rotation, l'élément fonctionnel présentant une surface externe fonctionnelle de bricolage. Dans la suite de la description, un dispositif de rénovation de surface est également dénommé rénovateur de surface.The invention will be more particularly described with respect to a portable surface renovation device or not, without being limited thereto. It is applicable to any electrical device / tool with a long, slender rotary shaft on which a functional element / accessory of elongated shape is to be removably mounted so as to ensure its rotation, the functional element having a functional outer surface of DIY. In the following description, a surface renovation device is also called surface renovator.
Le rénovateur de surface est un outil servant à décaper, brosser, rénover des surfaces, telles que des surfaces en bois ou en métal, à l'aide d'un élément cylindrique rotatif tel qu'une brosse ou un rouleau rotatif.The surface renovator is a tool for stripping, brushing, and remodeling surfaces, such as wood or metal surfaces, using a rotating cylindrical member such as a brush or a rotating roller.
On entend dans la suite de la description par « rouleau », tout rouleau, brosse, élément cylindrique possédant une surface externe fonctionnelle, telle qu'une surface active de frottement qui est adaptée au type de surface à rénover. A titre d'exemple, une surface active de frottement du rouleau peut être à base de feutre, ou de papier abrasif (à surface continue ou sous la forme de bandelettes), ou encore dotée de poils de brossage en plastique ou métalliques, etc.In the rest of the description, the term "roll" is understood to mean any roller, brush, cylindrical element having a functional external surface, such as an active friction surface that is adapted to the type of surface to be renovated. For example, an active friction surface of the roller may be based on felt, or abrasive paper (with continuous surface or in the form of strips), or with plastic or metal brushing bristles, etc.
Un outil de rénovation de surface à rouleau comporte de manière connue un corps logeant des moyens d'entraînement électrique du type moteur électrique, et dont l'extrémité distale forme des moyens de préhension, et transversalement au corps, un arbre rotatif longiligne sur lequel est monté de manière amovible au moins un élément cylindrique rotatif de rénovation du type rouleau, le rouleau étant apte à tourner en rotation via l'arbre rotatif entraîné par les moyens d'entraînement électrique ; un carter de sécurité est généralement également prévu pour recouvrir à distance en partie le rouleau.A roller surface renovation tool comprises, in a known manner, a body housing electrical drive means of the electric motor type, and whose distal end forms gripping means, and transversely to the body, an elongated rotary shaft on which is removably mounted at least one rotary cylindrical roller-type renovation element, the roller being rotatable through the rotary shaft driven by the electrical drive means; a safety cover is generally also provided to partially cover the roller.
Aujourd'hui, pour assurer un montage amovible du rouleau sur l'arbre, d'une part le rouleau comporte un évidement central longitudinal formant un moyeu, et d'autre part, l'arbre de l'outil est doté de deux rainures opposées, tandis que sont prévues deux clavettes longitudinales rapportées qui sont de forme complémentaire aux rainures pour être insérées dans lesdites rainures de l'arbre lorsque le moyeu du rouleau est associé à l'arbre. Ainsi, le montage d'un rouleau se fait de la manière suivante : le moyeu du rouleau est enfilé sur et autour de l'arbre jusqu'à venir en butée à proximité de l'extrémité proximale de l'arbre (côté corps de l'outil), puis les deux clavettes sont glissées dans les rainures, ce qui solidarise le rouleau à l'arbre, et enfin une rondelle et une vis de serrage sont fixées sur l'extrémité libre de l'arbre pour verrouiller en position le rouleau.Today, to ensure a removable mounting of the roller on the shaft, firstly the roller has a longitudinal central recess forming a hub, and secondly, the shaft of the tool is provided with two opposite grooves , while there are provided two longitudinal keys reported that are complementary shape to the grooves to be inserted into said grooves of the shaft when the hub of the roller is associated with the shaft. Thus, the assembly of a roll is done in the following way: the hub of the roll is threaded on and around the shaft until it comes into abutment near the proximal end of the shaft (body side of the tool), then the two keys are slid into the grooves, which secures the roller to the shaft, and finally a washer and a clamping screw are fixed on the free end of the shaft to lock in position the roller .
Cette conception de fixation amovible présente des inconvénients. En particulier, elle n'est pas si rapide à mettre en oeuvre, car elle nécessite de mettre en place les clavettes puis de boulonner l'extrémité de l'arbre. De plus, les clavettes sont des pièces rapportées qu'on peut aisément égarer au démontage.This removable fastening design has drawbacks. In particular, it is not so fast to implement because it requires to put in place the keys and bolt the end of the shaft. In addition, the keys are patches that can easily be misplaced.
Certes, selon les modèles de rouleau, en particulier pour les rouleaux dont le moyeu est métallique et non en matière plastique, la rondelle et la vis de serrage suffisent par compression latérale à bloquer le moyeu autour de l'arbre, toutefois, cette fixation ne convient que lorsqu'un seul rouleau est monté sur l'arbre. En effet, pour les rénovateurs de grande surface, il est nécessaire de monter deux rouleaux consécutifs sur l'arbre, et une compression latérale par boulonnage sur l'extrémité libre de l'arbre est insuffisante à la solidarisation des deux rouleaux sur l'arbre. Dans ce dernier cas, des clavettes sont indispensables.Of course, depending on the roller models, particularly for the rollers whose hub is metal and not plastic, the washer and the clamping screw are sufficient by lateral compression to lock the hub around the shaft, however, this fixation does not only when a single roller is mounted on the shaft. Indeed, for large surface renovators, it is necessary to mount two consecutive rollers on the shaft, and a lateral compression by bolting on the free end of the shaft is insufficient to the joining of the two rollers on the shaft . In the latter case, keys are essential.
L'invention a donc pour but de pallier notamment les inconvénients précités en fournissant un rouleau pour outil électrique à entraînement rotatif dudit rouleau, qui permette d'être aisé et rapide à monter et démonter sur l'outil, quels que soient le type de rouleau à moyeu métallique ou plastique, et le nombre de rouleaux à monter consécutivement sur un même arbre, tout en garantissant une solidarisation efficace du rouleau sur l'arbre de l'outil. L'invention porte également sur un outil électrique doté d'un tel rouleau, en particulier un dispositif de rénovation de surface à rouleau.The invention therefore aims to overcome in particular the aforementioned drawbacks by providing a roller for power tool rotary drive of said roller, which allows to be easy and quick to assemble and disassemble on the tool, regardless of the type of roller with a metal or plastic hub, and the number of rollers to be mounted consecutively on the same shaft, while ensuring effective attachment of the roller on the shaft of the tool. The invention also relates to an electric tool equipped with such a roller, in particular a roll surface renovation device.
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 "electric roller tool" is intended to mean an electric tool capable of rotating a functional element of cylindrical shape to provide a do-it-yourself task.
Selon l'invention, le rouleau à surface fonctionnelle pour outil électrique à entraînement rotatif, comprend un moyeu dont le corps cylindrique creux comporte une partie centrale creuse qui est destinée à constituer la partie de montage (de contact) du rouleau sur l'outil auquel est destiné le rouleau, caractérisé en ce que la partie centrale comporte sur sa face intérieure des moyens mâles de coopération par engagement mutuel au montage du rouleau. Les moyens mâles sont destinés à coopérer directement avec des moyens de coopération de forme femelle complémentaire d'un arbre rotatif de l'outil sur lequel est destiné à être monté le moyeu.According to the invention, the functional surface roller for rotary drive electric tool comprises a hub whose hollow cylindrical body has a hollow central portion which is intended to constitute the mounting portion (contact) of the roller on the tool to which is intended for the roller, characterized in that the central portion has on its inner face male means of cooperation by mutual engagement to the mounting of the roller. The male means are intended to cooperate directly with means of complementary female form of a rotary shaft of the tool on which is intended to be mounted hub.
On entend par « face intérieure » de la partie centrale, la face destinée à être contact direct avec un arbre rotatif de l'outil sur lequel est destiné à être monté le moyeu.The term "inner face" of the central part, the face intended to be direct contact with a rotary shaft of the tool on which is intended to be mounted the hub.
Selon une caractéristique, les moyens de coopération par engagement mutuel sont des moyens intégrés au corps du moyeu. On entend par « moyens intégrés », des moyens qui forment un ensemble monobloc (de préférence inamovible) en sortie de fabrication du rouleau, un ensemble unitaire avec le corps dont ils sont solidaires, au contraire de moyens rapportés qui sont indépendants. Les moyens de coopération par engagement mutuel font partie intégrante du corps du rouleau en sortie de fabrication du rouleau. Par conséquent, le rouleau est commercialisé avec lesdits moyens mâles de coopération par engagement mutuel intégrés au corps du rouleau afin de monter le rouleau sur l'outil en solidarisant directement le rouleau sans nécessiter de rapporter des pièces indépendantes de fixation.According to one characteristic, the mutual engagement cooperation means are means integrated in the body of the hub. The term "integrated means" means means that form a unitary assembly (preferably irremovable) at the output of the roll, a unitary assembly with the body of which they are integral, unlike reported means which are independent. The means of cooperation by mutual commitment form an integral part of the roller body at the end of manufacture of the roll. Therefore, the roll is marketed with said interengaging mating engagement means integral with the roll body for mounting the roll on the tool by directly joining the roll without the need for bringing back independent fasteners.
De préférence, les moyens mâles sont inamovibles.Preferably, the male means are irremovable.
Ainsi, le principe de solidarisation du rouleau à l'arbre de l'outil est plus simple à mettre en oeuvre et plus rapide par rapport au système de l'art antérieur, et permet avantageusement de s'affranchir de clavettes, évitant tout risque notamment de les perdre pour l'utilisateur. Selon une caractéristique, les moyens de coopération par engagement mutuel s'étendent longitudinalement à la partie centrale creuse du moyeu, en particulier tout le long de la partie creuse tout en étant en retrait (vers l'intérieur creux) par rapport aux chants du moyeu. Selon un mode de réalisation, les moyens mâles de coopération par engagement mutuel comprennent deux nervures longitudinales diamétralement opposées faisant saillie (radialement) depuis la face intérieure vers l'intérieur creux de la partie centrale du moyeu. De préférence, la partie centrale du moyeu avec les moyens de coopération par engagement mutuel et le reste du corps du moyeu forment un ensemble monobloc en matière plastique, en particulier fabriqué par moulage.Thus, the principle of securing the roller to the shaft of the tool is simpler to implement and faster compared to the system of the prior art, and advantageously allows to get rid of keys, avoiding any risk including to lose them for the user. According to one feature, the mutual engagement means extend longitudinally to the hollow central portion of the hub, particularly all along the hollow portion while being recessed (inwardly hollow) relative to the hubbands. . According to one embodiment, the male means of mutual engagement cooperation comprise two diametrically opposed longitudinal ribs projecting (radially) from the inner face towards the hollow interior of the central part of the hub. Preferably, the central portion of the hub with the engagement engagement means and the remainder of the hub body form a one-piece plastic assembly, particularly made by molding.
Selon un autre mode de réalisation, le moyeu comporte une partie périphérique qui enveloppe et est solidaire de la partie centrale, la partie périphérique étant en métal tandis que la partie centrale est en matière plastique de préférence fabriquée par moulage et collée à la partie périphérique en métal.According to another embodiment, the hub comprises a peripheral part which envelopes and is integral with the central part, the peripheral part being made of metal while the central part is made of plastic preferably manufactured by molding and glued to the peripheral part in metal.
En particulier selon la dimension de l'épaisseur du moyeu, le moyeu (le corps du moyeu) peut comporter dans son épaisseur des évidements. Les évidements s'étendent longitudinalement au corps du moyeu et débouchent vers l'extérieur aux deux extrémités opposées (latérales) du moyeu.In particular depending on the thickness of the hub, the hub (the hub body) may have recesses in its thickness. The recesses extend longitudinally to the hub body and open outwardly at the two opposite (lateral) ends of the hub.
Le rouleau présente une surface externe fonctionnelle formant une surface active de frottement, en particulier de rénovation de surface telle qu'à base de fibres synthétiques et/ou métalliques, ou de papier abrasif.The roller has a functional outer surface forming an active friction surface, in particular a surface renovation such as based on synthetic and / or metallic fibers, or abrasive paper.
L'invention porte également sur un outil électrique à élément/accessoire fonctionnel rotatif du type rouleau, notamment du type à fonction de rénovation de surface, comportant un arbre longiligne à entraînement rotatif qui est doté de moyens femelles de coopération pour le montage d'au moins un rouleau, et l'outil comprenant au moins un rouleau précité de l'invention, les moyens de coopération par engagement mutuel du rouleau coopérant avec lesdits moyens de coopération de l'arbre selon des formes complémentaires. Avantageusement, l'outil comporte des moyens de verrouillage garantissant le maintien en position du rouleau, en particulier des moyens de serrage latéral tels que par boulonnage qui sont disposés à l'extrémité libre de l'arbre une fois ledit au moins un rouleau en position sur l'arbre. En variante, les moyens de verrouillage peuvent être associés aux moyens de coopération par engagement mutuel (mâles et/ou femelles), en procurant une fonction de clipsage.The invention also relates to a roller-type rotary functional element / accessory electric tool, particularly of the surface-renewal function type, comprising a rotary-drive elongated shaft which is provided with female cooperation means for mounting the at least one roller, and the tool comprising at least one roller of the invention, the means for cooperation by mutual engagement of the roller cooperating with said means for cooperating with the shaft in complementary forms. Advantageously, the tool comprises locking means ensuring the holding in position of the roller, in particular lateral clamping means such as by bolting which are arranged at the free end of the shaft once said at least one roller in position on the tree. Alternatively, the locking means may be associated with the mutual engagement means (male and / or female), providing a clipping function.
On entend par « latéral » dans la suite de la description, le qualificatif par rapport à un plan transversal à l'axe longitudinal du rouleau ou de l'arbre de l'outil.The term "lateral" in the following description, the qualifier relative to a plane transverse to the longitudinal axis of the roller or the shaft of the tool.
Dans un mode de réalisation particulier, l'arbre de l'outil comprend deux rainures longitudinales diamétralement opposées, et ledit au moins un rouleau comprend deux nervures longitudinales opposées (symétriquement par rapport à l'axe longitudinal du moyeu) en tant que moyens mâles de coopération par engagement mutuel, qui coopèrent avec (sont engagées dans) respectivement les deux rainures opposées de l'arbre.In a particular embodiment, the shaft of the tool comprises two diametrically opposed longitudinal grooves, and said at least one roller comprises two opposite longitudinal ribs (symmetrically with respect to the longitudinal axis of the hub) as male means of mutual engagement cooperation, which cooperate with (are engaged in) respectively the two opposite grooves of the shaft.
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 ci-jointes, dans lesquelles :
- La
figure 1 est une vue en perspective de dessus d'un exemple d'outil électrique à rouleau selon l'invention sans son carter de protection ; - La
figure 2 représente lafigure 1 sans le rouleau ; - La
figure 3 est une vue isolée en perspective de l'arbre de l'outil ; - La
figure 4A est une vue en perspective d'un premier type de rouleau doté d'un moyeu selon l'invention ; - La
figure 4B est une vue en perspective du moyeu de lafigure 4A ; - La
figure 5 est une vue en coupe latérale du rouleau de lafigure 4A monté sur l'arbre de l'outil ; - La
figure 6A est une vue en perspective d'un second type de rouleau doté d'une variante de réalisation d'un moyeu selon l'invention ; - La
figure 6B est une vue en perspective d'une partie du moyeu de lafigure 6A ; - La
figure 7 est une vue en coupe latérale du rouleau de lafigure 6A monté sur l'arbre de l'outil ; - La
figure 8 est une vue en coupe latérale d'une autre variante de réalisation d'un moyeu selon l'invention.
- The
figure 1 is a perspective view from above of an example of electric roller tool according to the invention without its protective casing; - The
figure 2 represents thefigure 1 without the roll; - The
figure 3 is an isolated perspective view of the tool shaft; - The
Figure 4A is a perspective view of a first type of roll with a hub according to the invention; - The
Figure 4B is a perspective view of the hub of theFigure 4A ; - The
figure 5 is a side sectional view of the roller of theFigure 4A mounted on the tool shaft; - The
Figure 6A is a perspective view of a second type of roller with an alternative embodiment of a hub according to the invention; - The
Figure 6B is a perspective view of a part of the hub of theFigure 6A ; - The
figure 7 is a side sectional view of the roller of theFigure 6A mounted on the tool shaft; - The
figure 8 is a side sectional view of another embodiment of a hub according to the invention.
Les figures ne sont pas à l'échelle.The figures are not to scale.
L'outil électrique à entraînement rotatif 1 de l'invention illustré sur les
A titre d'exemple, cet outil est un rénovateur de surface, le rouleau 2 présentant sa surface fonctionnelle 20 en tant que surface active de rénovation.By way of example, this tool is a surface renovator, the
La
L'outil 1 comporte au moins un corps longiligne 10 logeant des moyens électriques d'entraînement rotatif tels qu'un moteur électrique et constituant par l'une de ses extrémités distales 11 un moyen de préhension de l'outil, et un arbre 12 (
L'outil 1 comporte au moins un rouleau 2 monté de manière amovible sur l'arbre 12. Pour un rénovateur de grande surface, l'outil comprend généralement deux rouleaux montés consécutivement sur l'arbre. Le rouleau 2 présente sa surface active 20 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
Le rouleau 2 est destiné à être changé lorsque sa surface active 20 est usée.The
En regard des
Selon l'invention, le moyeu 3 comporte des moyens intégrés 30A, 30B de coopération mutuelle, en l'occurrence des moyens mâles, qui coopèrent directement par engagement mutuel avec des moyens de coopération intégrés à l'arbre 12, en l'occurrence avec les rainures 13A et 13B de l'arbre. Les moyens de coopération par engagement mutuel 30A, 30B du rouleau et les moyens de coopération 13A, 13B de l'arbre sont de forme complémentaires. Les moyens de coopération mutuelle 30A, 30B et 13A, 13B permettent de solidariser le rouleau 2 à l'arbre 12. Pour verrouiller la fixation du rouleau, l'outil 1 comporte des moyens de serrage 4 (
Les moyens mâles 30A, 30B sont agencés sur la face intérieure 3' de la partie centrale longitudinale creuse 31.The male means 30A, 30B are arranged on the
Le rouleau 2 et donc le moyeu 3 présentent une longueur par exemple de 100 ou 200 mm. Pour des rénovateurs de grande surface, l'outil possède deux rouleaux 2 aboutés au niveau de l'une de leurs faces latérales.The
Les
Le premier type de rouleau 2A est un rouleau dont le moyeu 3 est fait d'un corps monobloc entièrement en matière plastique comprenant une partie centrale cylindrique creuse 31 (
L'autre type de rouleau 2B (
Les moyens mâles 30A, 30B de coopération pour le montage du rouleau sont agencés sur la face intérieure 3' de la partie centrale 32.The male means 30A, 30B of cooperation for mounting the roller are arranged on the
Selon l'invention, la partie centrale 31, 32 de chaque type de moyeu 3 est donc en matière plastique, et comprend/intègre les nervures 30A et 30B sur sa face intérieure 3' destinée à coopérer directement avec l'arbre de l'outil. De préférence, les moyens mâles sont issus de moulage avec la partie centrale.According to the invention, the
La
De plus, le corps présente avantageusement dans son épaisseur sur toute la longueur du corps cylindrique, entre sa partie centrale 31 et sa surface externe 31A, des évidements 34. Les évidements 34 permettent de gagner en coût de matière de fabrication, et alourdissent moins le poids du rouleau, participant à un meilleur entraînement rotatif. Ces évidements sont disposés de manière symétrique par rapport à l'axe longitudinal du corps cylindrique du moyeu.In addition, the body advantageously has in its thickness along the entire length of the cylindrical body, between its
La
Quant au moyeu 3 à base de métal (
Selon l'invention, chaque partie centrale 31, 32 du moyeu 3 comporte donc deux nervures longitudinales 30A, 30B diamétralement opposées en regard l'une de l'autre vers l'intérieur creux de ladite partie centrale. La forme des nervures 30A et 30B présente une forme de coopération mutuelle avec celle des rainures 13A et 13B de l'arbre 12.According to the invention, each
Telles qu'illustrées à titre d'exemple nullement limitatif sur les
Le moyeu 3 du rouleau de l'invention présente donc des formes mâles (nervures 30A et 30B) pour coopérer avec les formes femelles (rainures 13A et 13B) de l'arbre 12 ; ce mode de réalisation permet effectivement de coopérer avec les arbres rotatifs existant sur le marché qui sont usuellement dotés de formes femelles.The
Selon l'invention, les nervures 30A et 30B de la partie centrale 31, 32 de chaque moyeu sont obtenues par moulage du corps 30 ou de la partie centrale 32 en matière plastique.According to the invention, the
Les dimensions des nervures 30A et 30B sont conçues afin que les nervures coopèrent avec les rainures 13A et 13B selon un léger jeu, de préférence de l'ordre de 0,4 mm pour chaque nervure/rainure.The dimensions of the
Les nervures 30A et 30B s'étendent de préférence selon toute la longueur du moyeu 3.The
Avantageusement, les nervures 30A et 30B de la partie centrale 32 (
Claims (11)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1771184A FR3073166B1 (en) | 2017-11-09 | 2017-11-09 | ROLLER WITH FUNCTIONAL SURFACE FOR POWER TOOL AND POWER TOOL HAVING SUCH A ROLL |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3482879A1 true EP3482879A1 (en) | 2019-05-15 |
EP3482879B1 EP3482879B1 (en) | 2022-12-28 |
Family
ID=60765979
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18205101.1A Active EP3482879B1 (en) | 2017-11-09 | 2018-11-08 | Roller with functional surface for a power tool and power tool with such a roller |
Country Status (2)
Country | Link |
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EP (1) | EP3482879B1 (en) |
FR (1) | FR3073166B1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3056986A (en) * | 1958-07-18 | 1962-10-09 | Osborn Mfg Co | Reinforced brush construction |
EP1844901A1 (en) * | 2006-04-12 | 2007-10-17 | Gerd Eisenblätter GmbH | Attachment system, attachment adapter and attachment method |
US20110021119A1 (en) * | 2009-07-22 | 2011-01-27 | Chung-Han Lee | Grinding wheel assembly |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6949019B2 (en) * | 2004-01-12 | 2005-09-27 | Belanger Industrial Products, Inc. | Flap-type rotary finishing device |
-
2017
- 2017-11-09 FR FR1771184A patent/FR3073166B1/en active Active
-
2018
- 2018-11-08 EP EP18205101.1A patent/EP3482879B1/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3056986A (en) * | 1958-07-18 | 1962-10-09 | Osborn Mfg Co | Reinforced brush construction |
EP1844901A1 (en) * | 2006-04-12 | 2007-10-17 | Gerd Eisenblätter GmbH | Attachment system, attachment adapter and attachment method |
US20110021119A1 (en) * | 2009-07-22 | 2011-01-27 | Chung-Han Lee | Grinding wheel assembly |
Also Published As
Publication number | Publication date |
---|---|
FR3073166A1 (en) | 2019-05-10 |
EP3482879B1 (en) | 2022-12-28 |
FR3073166B1 (en) | 2019-12-20 |
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