EP0381557A1 - Releasable quick-mounting device for a rotating part, especially a grinding disc - Google Patents

Releasable quick-mounting device for a rotating part, especially a grinding disc Download PDF

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Publication number
EP0381557A1
EP0381557A1 EP90400209A EP90400209A EP0381557A1 EP 0381557 A1 EP0381557 A1 EP 0381557A1 EP 90400209 A EP90400209 A EP 90400209A EP 90400209 A EP90400209 A EP 90400209A EP 0381557 A1 EP0381557 A1 EP 0381557A1
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EP
European Patent Office
Prior art keywords
buttonhole
support
rotation
cavity
receiving member
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Granted
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EP90400209A
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German (de)
French (fr)
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EP0381557B1 (en
Inventor
Thierry Grasser
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Individual
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/16—Bushings; Mountings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
    • B24D9/08—Circular back-plates for carrying flexible material
    • B24D9/085—Devices for mounting sheets on a backing plate

Definitions

  • the present invention relates to a set of arrangements for the rapid and temporary joining of a part, intended to be driven in rotation, to a support capable of providing said drive.
  • the part intended to be driven in rotation can be an abrasive disc and the support capable of providing the drive can be joined operatively to motor means.
  • abrasive discs are disposable elements which wear out fairly quickly so, on the one hand, that they must be as low as possible cost price, and, on the other hand, that their replacement must be be performed instantly and without the need for a tool.
  • the means used for the meeting between the abrasive disc and its drive support must, however, ensure that the disc is effectively rotated and therefore be able to withstand the friction forces which develop.
  • the interconnection means consist of a metal piece in the shape of a large-edge bowl which is glued, along this wide edge, to the reverse side of the abrasive disc and the bottom of which is pierced. an access opening adapted to receive a male member dependent on the drive support.
  • the bottom wall of the bowl and its side wall define around said access opening a decreasing size path which the male element follows with, consequently, an autoblocking effect.
  • the reverse side of the disc is provided with a plastic part having a series of projections in the form of blades arranged in a circle and which snap into recesses of corresponding profile provided in a metal part included in the drive support.
  • This embodiment gives fairly satisfactory results but its execution requires the use of an assembly in several parts and machining and molding of delicate shapes.
  • the male interconnection means consists of a T-piece whose vertical bar is co-axial with the axis of rotation of the abrasive disc and its drive support and the crossbar of which is oriented towards the female interconnection means, the female means comprising a buttonhole of a geometry allowing the crossing of said buttonhole by the crossbar of the T.
  • part of the male interconnection means protrudes at the center of the outer surface of the abrasive disc, a part which may accidentally come into contact with the surface being treated, with the corresponding risks of damage.
  • the object of the present invention is to remedy this drawback by providing a set of extremely simple and reliable arrangements, comprising no protruding part on the surface of the part to be driven in rotation.
  • the buttonhole is made in a hollow receiving member in the cavity of which opens said buttonhole, said cavity being at least in cylinder portions and the thickness of the wall in which the buttonhole is made going from a height substantially less than the height of the vertical bar of the T at the radial wall of the cavity coinciding with said buttonhole, to a thickness substantially greater than the height of said bar, in the direction of a radial wall of the cavity forming a stop.
  • the cavity is substantially shaped double quarter cylinder, said quarter cylinders being symmetrical with respect to two perpendicular planes intersecting along the axis of rotation of the disc and its support and having, on either side, one of these planes, an intersection zone opening towards the outside of the receiving member and corresponding to said buttonhole. It is understood that, in this case, it is the radial wall of the quarter cylinder opposite the radial wall coincide with the buttonhole which forms a stop for rotation.
  • the thickness of the wall in which the buttonhole is made goes from a height substantially less than the height of the vertical bar of the T at the level of the radial wall of the cavity coinciding with said buttonhole, up to a thickness substantially greater than the height of said bar, in the direction of the radial wall of the cavity forming a stop.
  • the T-piece constitutes the end of the axis for driving the support in rotation and the receiving member is provided on the substantially flat face of the disc to be driven in rotation.
  • an elastomer support is molded onto the drive axis, which elastomer support offers the substantially flat surface intended to come into abutment against that of the disc to be driven in rotation.
  • the elastomer support provides an annular space around the T-piece and the receiving member is a plastic element bonded to the substantially planar reverse side of the disc intended to be rotated, said element being adapted to be housed in said annular space when the two flat surfaces are in abutment against one another.
  • the device according to the invention comprises a drive support 1 composed of a rod 2a adapted to be immobilized in the jaw of a power tool, rod which is extended by a support block 2b then by an inverted T-piece 3.
  • the vertical bar of the T is designated by 4 and its horizontal bar by 5.
  • a corolla 6 of elastomeric material is overmolded on the support block 2b by determining a surface substantially flat support 6a and providing around the T-piece an annular space 7.
  • an abrasive disc 8 whose reverse side is designated by the reference 8a and on which is stuck a receiving member 9 in the form of a wide-edge bowl 10. This wide edge 10 forms a flange and the bottom of the bowl is pierced with a buttonhole 11 whose geometry generally corresponds to that of the transverse bar 5.
  • the internal volume of the bowl is in fact defined by two quarter-cylinder cavities 12 (A, B, C) and 13 (D, E, F)) which are symmetrical with respect to the planes XX ′ and YY ′, which planes intersect along the axis of rotation ZZ ′ of the tool.
  • the two quarter-cylinders A, B, C and D, E, F intersect and their intersection zone is perpendicular to the buttonhole 11. It is understood that this structure allows the transverse bar 5 to penetrate into the buttonhole 11 and make it make a quarter turn to make it penetrate into the cavities 12 and 13.
  • the thickness of the wall 18 in which the buttonhole 11 is made is of variable importance. More precisely, at the level of the radial walls 19 (A, B) and 20 (E, D) of the quarter-cylinder cavities 12 and 13, the thickness of the wall 18 is substantially less than that of the vertical bar 4 of the T -which allows access to the horizontal bar 5 in said cavities 12 and 13- and this thickness increases until it is greater than the height of the bar 4. Slopes 14 and 15 are thus formed which promote blocking progressive of the male member 3 in these cavities, while it rotates there according to the arrows, the funds 16 and 17 of the cavity forming a blocking stop.
  • the means according to the invention are of an extremely simple structure and that the connection between the abrasive disc and its support is made by simple penetration of the transverse bar 5 in the buttonhole 11 and rotation of a quarter turn. Disconnection takes place in the reverse movement.
  • connection mode is applicable to other tools.

Abstract

The part (8) and its support have male (3) and female (9) means of interconnection. The male means (3) consists of a T part whose vertical bar (4) is coaxial with the axis of rotation (Z-Z') and whose cross bar (5) is oriented towards the female means (9). The female means (9) consists of a receiving member with a slot (11) shaped so as to allow the cross bar (5) of the T to enter said receiving member. Said slot (11) gives entrance into a cavity (12,13) which is at least in portions of a cylinder and in which there is at least one obstruction (16,17) which restricts the rotation possible to said cross bar (5) in said cavity (12,13). <IMAGE>

Description

La présente invention concerne un ensemble de disposi­tions pour la réunion rapide et temporaire d'une pièce, destinée à être entraînée en rotation, à un support susceptible de fournir ledit entraînement.The present invention relates to a set of arrangements for the rapid and temporary joining of a part, intended to be driven in rotation, to a support capable of providing said drive.

Plus précisément, la pièce destinée à être entraînée en rotation peut être un disque abrasif et le support susceptible de fournir l'entraînement peut être réuni de façon opérationnelle à des moyens moteurs.More specifically, the part intended to be driven in rotation can be an abrasive disc and the support capable of providing the drive can be joined operatively to motor means.

Les disques abrasifs précités sont des éléments jetables qui s'usent assez rapidement de sorte, d'une part, qu'ils doivent être d'un prix de revient aussi faible que possible, et, d'autre part, que leur remplacement doit pouvoir être réalisé instantanément et sans qu'il soit besoin d'avoir recours à un outil. Les moyens utilisés pour la réunion entre le disque abrasif et son support d'entraî-­nement doivent cependant garantir que le disque soit effectivement entraîné en rotation et donc être capables de résister aux forces de friction qui se développent.The abovementioned abrasive discs are disposable elements which wear out fairly quickly so, on the one hand, that they must be as low as possible cost price, and, on the other hand, that their replacement must be be performed instantly and without the need for a tool. The means used for the meeting between the abrasive disc and its drive support must, however, ensure that the disc is effectively rotated and therefore be able to withstand the friction forces which develop.

Dans une forme d'exécution connue, les moyens d'inter­connexion sont constitués par une pièce métallique en forme de cuvette à large bord qui est collée, le long de ce large bord, sur la face envers du disque abrasif et dont le fond est percé d'une ouverture d'accès adaptée à recevoir un organe mâle dépendant du support d'entraînement. La paroi de fond de la cuvette et sa paroi latérale définissent autour de ladite ouverture d'accès une voie de taille décroissante que suit l'élément mâle avec, par suite, un effet d'auto­blocage. Ce dispositif présente l'inconvénient qu'il est parfois très difficile de dèsolidariser l'élément femelle et l'élément mâle après usage.In a known embodiment, the interconnection means consist of a metal piece in the shape of a large-edge bowl which is glued, along this wide edge, to the reverse side of the abrasive disc and the bottom of which is pierced. an access opening adapted to receive a male member dependent on the drive support. The bottom wall of the bowl and its side wall define around said access opening a decreasing size path which the male element follows with, consequently, an autoblocking effect. This device has the drawback that it is sometimes very difficult to separate the female element and the male element after use.

Selon une autre forme d'exécution connue, la face envers du disque est munie d'une pièce en matière plastique présentant une série de projections en forme d'aubes disposées en cercle et qui viennent s'incliqueter dans des évidements de profil correspondant prévus dans une pièce métallique incluse dans le support d'entraînement. Cette forme d'exécution donne des résultats assez satisfaisants mais son exécution nécessite le recours à un montage en plusieurs pièces et à des usinages et moulages de formes délicates.According to another known embodiment, the reverse side of the disc is provided with a plastic part having a series of projections in the form of blades arranged in a circle and which snap into recesses of corresponding profile provided in a metal part included in the drive support. This embodiment gives fairly satisfactory results but its execution requires the use of an assembly in several parts and machining and molding of delicate shapes.

Dans une autre forme encore d'exécution connue (DE-A-­33 05 644), le moyen mâle d'interconnexion est constitué d'une pièce en T dont la barre verticale est co-axiale à l'axe de rotation du disque abrasif et de son support d'entraînement et dont la barre transversale est orientée vers le moyen femelle d'interconnexion, le moyen femelle comprenant une boutonnière d'une géométrie permettant la traversée de ladite boutonnière par la barre transversale du T.In yet another known embodiment (DE-A-33 05 644), the male interconnection means consists of a T-piece whose vertical bar is co-axial with the axis of rotation of the abrasive disc and its drive support and the crossbar of which is oriented towards the female interconnection means, the female means comprising a buttonhole of a geometry allowing the crossing of said buttonhole by the crossbar of the T.

Dans ce système connu, une partie du moyen mâle d'interconnexion fait saillie au centre de la surface extérieure du disque abrasif, partie qui peut venir accidentellement en contact avec la surface en cours de traitement, avec les risques d'endommagement correspondants.In this known system, part of the male interconnection means protrudes at the center of the outer surface of the abrasive disc, a part which may accidentally come into contact with the surface being treated, with the corresponding risks of damage.

La présente invention a pour but de remédier à cet inconvénient en apportant un ensemble de dispositions extrêmement simples et fiables, ne comportant aucune partie dépassante à la surface de la pièce à entraîner en rotation.The object of the present invention is to remedy this drawback by providing a set of extremely simple and reliable arrangements, comprising no protruding part on the surface of the part to be driven in rotation.

A cette fin, dans l'ensemble de dispositions selon l'invention, la boutonnière est pratiquée dans un organe récepteur creux dans la cavité duquel débouche ladite boutonnière, ladite cavité étant au moins en portions de cylindre et l'épaisseur de la paroi dans laquelle est pratiquée la boutonnière allant d'une hauteur sensiblement inférieure à la hauteur de la barre verticale du T au niveau de la paroi radiale de la cavité coïncidant avec ladite boutonnière, jusqu'à une épaisseur sensiblement supérieure à la hauteur de ladite barre, en direction d'une paroi radiale de la cavité formant butée.To this end, in the set of arrangements according to the invention, the buttonhole is made in a hollow receiving member in the cavity of which opens said buttonhole, said cavity being at least in cylinder portions and the thickness of the wall in which the buttonhole is made going from a height substantially less than the height of the vertical bar of the T at the radial wall of the cavity coinciding with said buttonhole, to a thickness substantially greater than the height of said bar, in the direction of a radial wall of the cavity forming a stop.

Plus précisément, la cavité est sensiblement en forme de double quart de cylindre, lesdits quarts de cylindre étant symétriques entre eux par rapport à deux plans perpendiculaires s'entrecroisant selon l'axe de rotation du disque et de son support et ayant, de part et d'autre, de l'un de ces plans, une zone d'intersection s'ouvrant vers l'extérieur de l'organe récepteur et correspondant à ladite boutonnière. On comprend que, dans ce cas, c'est la paroi radiale du quart de cylindre opposée à la paroi radiale coïncident avec la boutonnière qui forme butée d'arrêt en rotation.More specifically, the cavity is substantially shaped double quarter cylinder, said quarter cylinders being symmetrical with respect to two perpendicular planes intersecting along the axis of rotation of the disc and its support and having, on either side, one of these planes, an intersection zone opening towards the outside of the receiving member and corresponding to said buttonhole. It is understood that, in this case, it is the radial wall of the quarter cylinder opposite the radial wall coincide with the buttonhole which forms a stop for rotation.

Dans une forme d'exécution préférée, l'épaisseur de la paroi dans laquelle est pratiquée la boutonnière va d'une hauteur sensiblement inférieure à la hauteur de la barre verticale du T au niveau de la paroi radiale de la cavité coïncidant avec ladite boutonnière, jusqu'à une épaisseure sensiblement supérieure à la hauteur de ladite barre, en direction de la paroi radiale de la cavité formant butée.In a preferred embodiment, the thickness of the wall in which the buttonhole is made goes from a height substantially less than the height of the vertical bar of the T at the level of the radial wall of the cavity coinciding with said buttonhole, up to a thickness substantially greater than the height of said bar, in the direction of the radial wall of the cavity forming a stop.

En pratique, la pièce en T constitue l'extrémité de l'axe d'entraînement en rotation du support et l'organe récepteur est prévu sur la face sensiblement plane du disque à entraîner en rotation.In practice, the T-piece constitutes the end of the axis for driving the support in rotation and the receiving member is provided on the substantially flat face of the disc to be driven in rotation.

De préférence, un support en élastomère est surmoulé sur l'axe d'entraînement, lequel support élastomère offre la surface sensiblement plane destinée à venir en appui contre celle du disque à entraîner en rotation. Le support en élastomère ménage un espace annulaire autour de la pièce en T et l'organe récepteur est un élément en matière plastique collé sur la face envers sensiblement plane du disque destiné à être entraîné en rotation, ledit élément étant adapté à venir se loger dans ledit espace annulaire lorsque les deux surfaces planes sont en appui l'une contre l'autre.Preferably, an elastomer support is molded onto the drive axis, which elastomer support offers the substantially flat surface intended to come into abutment against that of the disc to be driven in rotation. The elastomer support provides an annular space around the T-piece and the receiving member is a plastic element bonded to the substantially planar reverse side of the disc intended to be rotated, said element being adapted to be housed in said annular space when the two flat surfaces are in abutment against one another.

Il est bien entendu que l'invention est applicable à une autre pièce à entraîner en rotation qu'un disque.It is understood that the invention is applicable to another part to be driven in rotation than a disc.

L'invention est décrite ci-après en référence aux dessins annexés dans lesquels :

  • - la figure 1 est une vue en coupe partielle du support d'entraînment selon l'invention,
  • - la figure 2 est une vue en coupe du disque abrasif, prise selon le plan Y-Y′ de la figure 5,
  • - la figure 3 est une vue de l'insert en acier entrant dans la composition du support d'entraînement de la figure 1,
  • - la figure 4 est une vue en bout dudit insert, et
  • - la figure 5 est une vue de dessous de l'organe femelle de connexion avant son collage sur la face envers du disque abrasif selon l'invention.
The invention is described below with reference to the accompanying drawings in which:
  • FIG. 1 is a partial section view of the drive support according to the invention,
  • FIG. 2 is a sectional view of the abrasive disc, taken along the plane YY ′ of FIG. 5,
  • FIG. 3 is a view of the steel insert used in the composition of the drive support of FIG. 1,
  • FIG. 4 is an end view of said insert, and
  • - Figure 5 is a bottom view of the female connection member before it is bonded to the reverse side of the abrasive disc according to the invention.

Si l'on se réfère aux figures 1, 3 et 4, on voit que le dispositif selon l'invention comprend un support d'entraîne­ment 1 composé d'une tige 2a adaptée à être immobilisée dans la mâchoire d'un outil moteur, tige qui se prolonge par un bloc support 2b puis par une pièce en T inversé 3. La barre verticale du T est désignée par 4 et sa barre horizontale par 5. Une corolle 6 en matière élastomère est surmoulée sur le bloc support 2b en déterminant une surface sensiblement plane d'appui 6a et en ménageant autour de la pièce en T un espace annulaire 7. Si l'on en vient maintenant à la figure 2, on voit un disque abrasif 8 dont la face envers est désignée par la référence 8a et sur laquelle est collé un organe récepteur 9 en forme de cuvette à large bord 10. Ce large bord 10 forme bride et le fond de la cuvette est percé d'une boutonnière 11 dont la géométrie correspond d'une manière générale à celle de la barre transversale 5.If we refer to Figures 1, 3 and 4, we see that the device according to the invention comprises a drive support 1 composed of a rod 2a adapted to be immobilized in the jaw of a power tool, rod which is extended by a support block 2b then by an inverted T-piece 3. The vertical bar of the T is designated by 4 and its horizontal bar by 5. A corolla 6 of elastomeric material is overmolded on the support block 2b by determining a surface substantially flat support 6a and providing around the T-piece an annular space 7. If we now come to Figure 2, we see an abrasive disc 8 whose reverse side is designated by the reference 8a and on which is stuck a receiving member 9 in the form of a wide-edge bowl 10. This wide edge 10 forms a flange and the bottom of the bowl is pierced with a buttonhole 11 whose geometry generally corresponds to that of the transverse bar 5.

On voit, d'après les figures 2 et 5, que le volume interne de la cuvette est en fait défini par deux cavités en quart de cylindre 12 (A, B, C) et 13 (D, E, F)) qui sont symétriques par rapport aux plans X-X′ et Y-Y′, lesquels plans s'intersectent le long de l'axe de rotation Z-Z′ de l'outil. Les deux quarts de cylindre A, B, C et D, E, F s'intersectent et leur zone d'intersection est à l'aplomb de la boutonnière 11. On comprend que cette structure permet de faire pénétrer la barre transversale 5 dans la boutonnière 11 et de lui faire faire un quart de tour pour la faire pénétrer dans les cavités 12 et 13.We see, from Figures 2 and 5, that the internal volume of the bowl is in fact defined by two quarter-cylinder cavities 12 (A, B, C) and 13 (D, E, F)) which are symmetrical with respect to the planes XX ′ and YY ′, which planes intersect along the axis of rotation ZZ ′ of the tool. The two quarter-cylinders A, B, C and D, E, F intersect and their intersection zone is perpendicular to the buttonhole 11. It is understood that this structure allows the transverse bar 5 to penetrate into the buttonhole 11 and make it make a quarter turn to make it penetrate into the cavities 12 and 13.

Comme il ressort également des figures 2 et 5, l'épaisseur de la paroi 18 dans laquelle est pratiquée la boutonnière 11 est d'importance variable. Plus précisément, au niveau des parois radiales 19 (A, B) et 20 (E, D) des cavités en quart de cylindre 12 et 13, l'épaisseur de la paroi 18 est sensiblement inférieure à celle de la barre verticale 4 du T -ce qui permet l'accès de la barre horizontale 5 dans lesdites cavités 12 et 13- et cette épaisseur va en augmentant jusqu'à être supérieure à la hauteur de la barre 4. Des pentes 14 et 15 sont ainsi formées qui favorisent le blocage progressif de l'organe mâle 3 dans ces cavités, tandis qu'il y tourne selon les flèches, les fonds 16 et 17 de cavité formant butée de blocage.As is also shown in Figures 2 and 5, the thickness of the wall 18 in which the buttonhole 11 is made is of variable importance. More precisely, at the level of the radial walls 19 (A, B) and 20 (E, D) of the quarter-cylinder cavities 12 and 13, the thickness of the wall 18 is substantially less than that of the vertical bar 4 of the T -which allows access to the horizontal bar 5 in said cavities 12 and 13- and this thickness increases until it is greater than the height of the bar 4. Slopes 14 and 15 are thus formed which promote blocking progressive of the male member 3 in these cavities, while it rotates there according to the arrows, the funds 16 and 17 of the cavity forming a blocking stop.

On comprend que les moyens selon l'invention sont d'une structure extrêmement simple et que la connexion entre le disque abrasif et son support se fait par simple pénétration de la barre transversale 5 dans la boutonnière 11 et rotation d'un quart de tour. La déconnexion s'opère selon le mouvement inverse.It is understood that the means according to the invention are of an extremely simple structure and that the connection between the abrasive disc and its support is made by simple penetration of the transverse bar 5 in the buttonhole 11 and rotation of a quarter turn. Disconnection takes place in the reverse movement.

Des essais ont montré que ce moyen de réunion rapide et temporaire est extrêment fiable en dépit de sa simplicité.Tests have shown that this quick and temporary means of meeting is extremely reliable despite its simplicity.

Bien que dans la présente description on se soit référé au montage d'un disque abrasif sur un support d'entraîne­ment, il est bien entendu que le mode de connexion proposé est applicable à d'autres outils.Although in the present description, reference has been made to mounting an abrasive disc on a drive support, it is understood that the proposed connection mode is applicable to other tools.

Claims (6)

1- Ensemble de dispositions pour la réunion rapide et temporaire d'une pièce (8), destinée à être entraînée en rotation, à un support (1) susceptible de fournir ledit entraînement, ladite pièce (8) et ledit support (1) présentant respectivement une face (6a, 8a) sensiblement plane destinée à venir en appui l'une contre l'autre, et lesdites faces (6a, 8a) étant pourvues de moyens d'intercon­nexion mâle (3) et femelle (9), ledit moyen mâle (3) étant constitué d'une pièce en T dont la barre verticale (4) est co-axiale à l'axe de rotation (Z-Z′) de la pièce (8) et de son support (1) et dont la barre transversale (5) est orientée vers le moyen femelle (9), ledit moyen femelle (9) comprenant une boutonnière (11) d'une géométrie permettant la traversée de ladite boutonnière par la barre transversale (5) du T, caractérisé en ce que ladite boutonnière (11) est pratiquée dans un organe récepteur creux dans la cavité (12, 13) duquel débouche ladite boutonnière(11), ladite cavité (12, 13) étant au moins en portions de cylindre et l'épaisseur de la paroi dans laquelle est pratiquée la boutonnière (11) allant d'une hauteur sensiblement inférieu­re à la hauteur de la barre verticale (4) du T au niveau de la paroi radiale (20, 19) de la cavité coïncidant avec ladite boutonnière (11), jusqu'à une épaisseur sensiblement supérieure à la hauteur de ladite barre (4), en direction d'une paroi radiale de la cavité formant butée (16, 17).1- Set of arrangements for the rapid and temporary assembly of a part (8), intended to be driven in rotation, to a support (1) capable of providing said drive, said part (8) and said support (1) having respectively a substantially planar face (6a, 8a) intended to come into abutment against each other, and said faces (6a, 8a) being provided with male (3) and female (9) interconnection means, said means male (3) consisting of a T-piece whose vertical bar (4) is co-axial with the axis of rotation (ZZ ′) of the part (8) and its support (1) and whose bar transverse (5) is oriented towards the female means (9), said female means (9) comprising a buttonhole (11) of a geometry allowing the crossing of said buttonhole by the transverse bar (5) of the T, characterized in that said buttonhole (11) is formed in a hollow receiving member in the cavity (12, 13) from which opens said buttonhole e (11), said cavity (12, 13) being at least in cylinder portions and the thickness of the wall in which the buttonhole (11) is made, ranging from a height substantially less than the height of the vertical bar ( 4) of the T at the level of the radial wall (20, 19) of the cavity coinciding with said buttonhole (11), to a thickness substantially greater than the height of said bar (4), in the direction of a radial wall of the cavity forming a stop (16, 17). 2- Ensemble selon la revendication 1, caractérisé en ce que la cavité (12, 13) est sensiblement en forme de double quart de cylindre, lesdits quarts de cylindre étant symétriques entre eux par rapport à deux plans perpendicu­laires (X-X′, Y-Y′) s 'entrecroisant selon l'axe de rotation (Z-Z′) de la pièce (8) et de son support (1) et ayant, de part et d'autre de l'un de ces plans, une zone d'inter­section s'ouvrant vers l'extérieur de l'organe récepteur et correspondant à ladite boutonnière (11).2- An assembly according to claim 1, characterized in that the cavity (12, 13) is substantially in the form of a double quarter cylinder, said quarter cylinders being symmetrical with respect to two perpendicular planes (XX ′, YY ′) intersecting along the axis of rotation (ZZ ′) of the part (8) and its support (1) and having, on either side of one of these planes, an intersection zone s' opening towards the outside of the receiving member and corresponding to said buttonhole (11). 3- Ensemble selon la revendication 1 ou 2, caractérisé en ce que la pièce en T (3) constitue l'extrémité d'un axe d'entraînement (2a, 2b) en rotation et en ce que l'organe récepteur (9) est prévu sur la face sensiblement plane (8a) de la pièce (8) à entraîner en rotation.3- assembly according to claim 1 or 2, characterized in that the T-piece (3) constitutes the end of a rotational drive axis (2a, 2b) and in that the receiving member (9) is provided on the substantially planar face (8a) of the part (8) to be rotated. 4- Ensemble selon la revendication 3, caractérisé en ce qu'un support (6) en élastomère est surmoulé sur l'axe d'entraînement (2a, 2b), lequel support élastomère offre la surface sensiblement plane (6a) destinée à venir en appui contre celle (8a) de la pièce à entraîner en rotation.4- An assembly according to claim 3, characterized in that an elastomer support (6) is molded onto the drive shaft (2a, 2b), which elastomer support provides the substantially flat surface (6a) intended to come in support against that (8a) of the part to be driven in rotation. 5- Ensemble selon la revendication 4, caractérisé en ce que le support en élastomère (6) ménage un espace annulaire (7) autour de la pièce en T (3) et en ce que l'organe récepteur (9) est un élément en matière plastique collé sur la surface sensiblement plane (8a) de la pièce (8) destinée à être entraînée en rotation, ledit élément (9) étant adapté à venir se loger dans ledit espace annulaire (7) lorsque les deux surfaces planes (6a, 8a) sont en appui l'une contre l'autre.5- An assembly according to claim 4, characterized in that the elastomer support (6) provides an annular space (7) around the T-piece (3) and in that the receiving member (9) is an element in plastic material bonded to the substantially flat surface (8a) of the part (8) intended to be driven in rotation, said element (9) being adapted to be housed in said annular space (7) when the two flat surfaces (6a, 8a) are in abutment against each other. 6- Ensemble selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la pièce (8) destinée à être entraînée en rotation est un disque abrasif.6- An assembly according to any one of claims 1 to 5, characterized in that the part (8) intended to be driven in rotation is an abrasive disc.
EP19900400209 1989-01-26 1990-01-24 Releasable quick-mounting device for a rotating part, especially a grinding disc Expired - Lifetime EP0381557B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8900939 1989-01-26
FR8900939A FR2641999A1 (en) 1989-01-26 1989-01-26 SET OF ARRANGEMENTS FOR THE RAPID AND TEMPORARY MEETING OF A WORKPIECE, INTENDED TO BE DRIVEN IN ROTATION, WITH A SUPPORT IN PARTICULAR FOR ABRASIVE DISCS

Publications (2)

Publication Number Publication Date
EP0381557A1 true EP0381557A1 (en) 1990-08-08
EP0381557B1 EP0381557B1 (en) 1993-04-21

Family

ID=9378113

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900400209 Expired - Lifetime EP0381557B1 (en) 1989-01-26 1990-01-24 Releasable quick-mounting device for a rotating part, especially a grinding disc

Country Status (4)

Country Link
EP (1) EP0381557B1 (en)
DE (1) DE69001361T2 (en)
ES (1) ES2040570T3 (en)
FR (1) FR2641999A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998043779A1 (en) * 1997-03-28 1998-10-08 Minnesota Mining And Manufacturing Company A surface treating article and method and system for retaining such article
GB2390316A (en) * 2002-07-05 2004-01-07 Bosch Gmbh Robert Backing pad for an abrasive disc
WO2005087435A1 (en) * 2004-02-13 2005-09-22 Abdelouahab Otmane Supporting assembly and rotary working member, particularly an abrasive disc, releasably mountable on a drive shaft
WO2007057723A1 (en) * 2005-11-18 2007-05-24 Techtronic Industries Company Limited Sand pad lock for sander

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2843553B1 (en) * 2002-08-14 2005-07-08 Abdelouahab Otmane SUPPORT ASSEMBLY AND ROTATIONAL FUNCTIONAL ELEMENT, AND IN PARTICULAR ABRASIVE DISC, DESIGNED TO BE REMOVABLELY MOUNTED ON A MOTOR SHAFT

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1322389A (en) * 1962-03-15 1963-03-29 Finishing articles and their supporting elements, finishing materials and their manufacturing process
FR1404924A (en) * 1964-08-14 1965-07-02 Minnesota Mining & Mfg Quick-change abrasive disc device
US3436875A (en) * 1966-08-05 1969-04-08 Ralph R Cheney Abrasive disc holder
DE3305644A1 (en) * 1983-02-18 1984-08-23 Sven Dr. Wildhaus Jarby Grinding, polishing and cutting-off wheel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1322389A (en) * 1962-03-15 1963-03-29 Finishing articles and their supporting elements, finishing materials and their manufacturing process
FR1404924A (en) * 1964-08-14 1965-07-02 Minnesota Mining & Mfg Quick-change abrasive disc device
US3436875A (en) * 1966-08-05 1969-04-08 Ralph R Cheney Abrasive disc holder
DE3305644A1 (en) * 1983-02-18 1984-08-23 Sven Dr. Wildhaus Jarby Grinding, polishing and cutting-off wheel

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998043779A1 (en) * 1997-03-28 1998-10-08 Minnesota Mining And Manufacturing Company A surface treating article and method and system for retaining such article
GB2390316A (en) * 2002-07-05 2004-01-07 Bosch Gmbh Robert Backing pad for an abrasive disc
GB2390316B (en) * 2002-07-05 2005-05-18 Bosch Gmbh Robert Insert tool with a support plate
WO2005087435A1 (en) * 2004-02-13 2005-09-22 Abdelouahab Otmane Supporting assembly and rotary working member, particularly an abrasive disc, releasably mountable on a drive shaft
WO2007057723A1 (en) * 2005-11-18 2007-05-24 Techtronic Industries Company Limited Sand pad lock for sander
US7510465B2 (en) 2005-11-18 2009-03-31 Eastway Fair Company Limited Sand pad lock for sander

Also Published As

Publication number Publication date
FR2641999B1 (en) 1995-02-03
ES2040570T3 (en) 1993-10-16
FR2641999A1 (en) 1990-07-27
EP0381557B1 (en) 1993-04-21
DE69001361D1 (en) 1993-05-27
DE69001361T2 (en) 1993-11-04

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