EP1449625A2 - Percussive or vibratory hand tool with handle - Google Patents

Percussive or vibratory hand tool with handle Download PDF

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Publication number
EP1449625A2
EP1449625A2 EP04290439A EP04290439A EP1449625A2 EP 1449625 A2 EP1449625 A2 EP 1449625A2 EP 04290439 A EP04290439 A EP 04290439A EP 04290439 A EP04290439 A EP 04290439A EP 1449625 A2 EP1449625 A2 EP 1449625A2
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EP
European Patent Office
Prior art keywords
handle
tool
coating
symmetry
axis
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.)
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EP04290439A
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German (de)
French (fr)
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EP1449625A3 (en
Inventor
Jean-Luc Simonin
Alain Vettoretti
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Societe de Prospection et dInventions Techniques SPIT SAS
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Societe de Prospection et dInventions Techniques SPIT SAS
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Publication of EP1449625A2 publication Critical patent/EP1449625A2/en
Publication of EP1449625A3 publication Critical patent/EP1449625A3/en
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/006—Vibration damping means

Definitions

  • the invention relates to pneumatic or electric hand tools with percussion, hammer, drill and other nailer.
  • the coated solution seems effective, since the entire handle is covered by the shock absorbing coating and the hand is completely protected.
  • these coatings which are generally plastic, are subject to various aggressive elements, such as water, air, light, UV, temperature, industrial pollutants, which affect their physical properties.
  • the plaintiff has sought to resolve this problem and offers a tool percussion or vibration manual with a grip handle with a covering of damping material, characterized in that the handle has a visual wear indicator.
  • the material of the coating of the handle which constitutes the wear indicator is the material which visually betrays its wear by its change of state caused by the action of aggressive elements.
  • the coating marries the handle in a conformation which equalizes the stresses of shocks and vibrations mechanical in said material, so as to obtain uniform wear of the material and thus increase its lifespan.
  • the shape of the coating is symmetrical with respect to a plane of symmetry of the tool and is limited by a contact surface and a external surface whose sections in this plane of symmetry are substantially delimited by curves of axes of symmetry parallel to the work axis and convexities oriented towards the tool.
  • This shape equalizes constraints and follows the shape of the hand.
  • the coating comprises two layers of material of different amortizations fitting together according to a junction surface similar to the contact surface separating the handle from the coating so to cover more effectively the spectrum of shocks and vibrations to be damped, a layer being harder, effective against vibration, another softer, against shocks.
  • At least one material is transparent or translucent as long that it is not worn and makes it possible to visually distinguish a witness on the handle attesting to compliance with depreciation standards.
  • the plaintiff also offers a removable handle for a manual percussion tool or vibration with grip handle, removable handle characterized by the fact that it includes a visual wear indicator, preferably a flexible coating on a rigid frame, the flexible coating serving wear indicator.
  • the flexible coating obscures a mark of wear marked on the handle.
  • the frame does not cover the flexible coating on a central part. This makes it easier to visually check for wear.
  • the flexible coating comprises a protuberance arranged to fit into an opening in the handle of gripping and the frame includes means for fixing the handle removable on the grip.
  • the manual percussion tool 1 comprises a handle 10 for percussion work along axis 3 of the tool.
  • the grip handle 10 is covered with a coating 11 or layer flexible in material absorbing the shocks caused by the percussions of the tool.
  • the coating here comprises a second layer 12, in doubling of layer 11, absorbing the vibrations of the hand on the handle.
  • These layers are glued or molded one on top of the other and the first fixed or mounted on the grip, form the covering and are both of suitable materials to dampen the entire spectrum of frequencies of shocks and vibrations generated by the percussion of the tool.
  • the material of the first flexible layer filters the frequencies impact and second layer material, plus rigid, filters the lower frequencies not filtered by the first layer.
  • the tool and the grip handle essentially accept a plane of symmetry 4 which separates the tool shell into two 10 "and 10" half-shells (see fig. 3).
  • layers 11, 12 and the handle gripping 10 are applied according to bearing surfaces which are a contact surface 70 between the flexible layer 11 and the grip handle 10, a junction surface 60 between the two layers of the covering 11, 12, and an external surface for manual gripping.
  • bearing surfaces are at less of the second order, akin to their most exposed parts to shocks, that is to say in the vicinity of their intersection with axis 3, substantially to hyperbolic dishes so the plane of symmetry 4 cuts them substantially along parabolas 111, 112 for the layer 11 and 121, 122 for layer 12, and any plane 5 to 7 perpendicular in plane 4 and parallel to axis 3 cuts them according to parabolas 113, 114 to 115, 116, for layer 11, and 123, 124 to 125, 126, for layer 12.
  • these surfaces differ from hyperbolic dishes, however, in that dishes 113, 114, 123, 124 and dishes 115, 116, 125, 126 have not, two by two, for example 113 and 115, equal parameters.
  • these parameters P depend on the thickness e 1 , e 3 or e 2 , e 4 of each of the layers in the plane 5, 7 and on the thickness E of the grip handle so as to equalize the stresses as well as possible. in the constituent materials, from axis 3 intersection of planes 5 and 4 to axis 6 intersection of planes 7 and 4 while completely covering the grip handle.
  • the bearing surfaces are such that the parabolas in the planes 5 and 7 and an intermediate plane passing through the axis 8 approach each other others all the more as one is distant from axes 3, 8 and 6 so that one tends to equalize the stresses in said materials in planes such as 5, 8 and 7.
  • the relation R2 respects the condition of zero thickness at a distance E / 2 of said axes.
  • the handle (10) for gripping the tool is equipped with a removable handle (10 ') constituting the covering as previously described, that is to say comprising two layers of materials different, one, flexible coating 11, rather filtering shocks, by example overmolded on the second, rigid frame 12, filtering rather vibrations, with a suitable joining surface 60.
  • the removable handle 10 adapts to the grip handle 10 according to a contact surface of the type described above, but has a protuberance 45 of its flexible layer 11 fitting into an opening 20 formed in the upper part of the two half-shells 10 ", 10" 'of the tool and its grip handle.
  • the removable handle also includes a fixing means, for example a screw 41, fixing, by a hole 40 provided in the lower part of the frame 12, the frame at the bottom of the grip handle, provided with additional fixing means, for example a threaded hole 30.
  • the reinforcement is arranged to leave visible the junction surface in a central part 50 of the removable handle located opposite a marking 25 of a wear mark on the contact surface 70 of the handle 10 gripping and removable handle 10 ', so that the diaper flexible 11 being transparent, this mark is visually apparent in this central part.
  • the part central 50 is the wear indicator.

Abstract

The tool has a gripping handle (10) with a coating (11, 12) of shock absorber material. The handle has a visual wear check. The material is a translucent coating material (11), which constitutes the wear check by a change of state. The handle works in percussion according to an axis of the tool. The coating equalizes shock constraints and mechanical vibrations in the material according to conformation.

Description

L'invention concerne les outils manuels pneumatiques ou électriques à percussion, du genre marteau, perceuse et autre cloueur.The invention relates to pneumatic or electric hand tools with percussion, hammer, drill and other nailer.

Pour satisfaire aux normes d'hygiène et de sécurité prévues dans le cadre de la législation du travail, et notamment aux normes européennes de limitation des vibrations des poignées de marteaux ou autres appareils manuels à percussion, des fabricants ont proposé de limiter les vibrations en équipant les poignées des outils de dispositifs amortisseurs ou de revêtements à matériau souple, tels que décrits, par exemple, dans EP 0 856 385 ou dans WO 00/64642 pour amortir les chocs et vibrations dans la direction de l'axe de travail de l'outil.To meet health and safety standards as part of labor legislation, and in particular European standards of limitation of vibrations of hammer handles or other devices percussion manuals, manufacturers have proposed limiting vibrations by fitting tool handles with shock absorbers or flexible material coatings, as described, for example, in EP 0 856 385 or in WO 00/64642 to absorb shocks and vibrations in the direction of the tool's working axis.

La solution avec revêtements semble efficace, puisque toute la poignée est couverte par le revêtement amortisseur et la main est complètement protégée.The coated solution seems effective, since the entire handle is covered by the shock absorbing coating and the hand is completely protected.

Cependant, outre les vibrations elles-mêmes, ces revêtements, qui sont généralement plastiques, sont soumis à divers éléments agressifs, tels que l'eau, l'air, la lumière, les U.V., la température, les polluants industriels, qui affectent leurs propriétés physiques.However, in addition to the vibrations themselves, these coatings, which are generally plastic, are subject to various aggressive elements, such as water, air, light, UV, temperature, industrial pollutants, which affect their physical properties.

C'est pourquoi périodiquement, lorsqu'ils ont perdu leur élasticité, ils devraient être remplacés. Mais rien n'indique quand ils ne sont plus assez efficaces pour respecter les normes ci-dessus.This is why periodically, when they have lost their elasticity, they should be replaced. But nothing indicates when they are no longer enough effective in meeting the above standards.

La demanderesse a cherché à résoudre ce problème et propose un outil manuel à percussion ou à vibration comportant une poignée de préhension avec un revêtement en matériau amortisseur, caractérisé par le fait que la poignée comporte un témoin visuel d'usure.The plaintiff has sought to resolve this problem and offers a tool percussion or vibration manual with a grip handle with a covering of damping material, characterized in that the handle has a visual wear indicator.

Ainsi, il est possible de savoir quand remplacer le revêtement de la poignée.Thus, it is possible to know when to replace the coating of the handle.

De préférence, c'est le matériau du revêtement de la poignée qui constitue le témoin d'usure, matériau qui trahit visuellement son usure par son changement d'état provoqué par l'action des éléments agressifs.Preferably, it is the material of the coating of the handle which constitutes the wear indicator, material which visually betrays its wear by its change of state caused by the action of aggressive elements.

De préférence encore, le revêtement épouse la poignée selon une conformation qui égalise les contraintes de chocs et de vibrations mécaniques dans ledit matériau, de façon à obtenir une usure uniforme du matériau et ainsi augmenter sa durée de vie.More preferably, the coating marries the handle in a conformation which equalizes the stresses of shocks and vibrations mechanical in said material, so as to obtain uniform wear of the material and thus increase its lifespan.

Avantageusement, la forme du revêtement est symétrique par rapport à un plan de symétrie de l'outil et est limité par une surface de contact et une surface externe dont les sections dans ce plan de symétrie sont sensiblement délimitées par des courbes d'axes de symétrie parallèles à l'axe de travail et de convexités orientées vers l'outil. Cette forme égalise les contraintes et épouse la forme de la main.Advantageously, the shape of the coating is symmetrical with respect to a plane of symmetry of the tool and is limited by a contact surface and a external surface whose sections in this plane of symmetry are substantially delimited by curves of axes of symmetry parallel to the work axis and convexities oriented towards the tool. This shape equalizes constraints and follows the shape of the hand.

Avantageusement, le revêtement comporte deux couches de matériau d'amortissements différents s'emboítant selon une surface de jonction similaire à la surface de contact séparant la poignée du revêtement de façon à couvrir plus efficacement le spectre des chocs et vibrations à amortir, une couche étant plus dure, efficace contre les vibration, une autre plus molle, contre les chocs.Advantageously, the coating comprises two layers of material of different amortizations fitting together according to a junction surface similar to the contact surface separating the handle from the coating so to cover more effectively the spectrum of shocks and vibrations to be damped, a layer being harder, effective against vibration, another softer, against shocks.

De préférence, au moins un matériau est transparent ou translucide tant qu'il n'est pas usé et permet de distinguer visuellement un témoin sur la poignée attestant de la conformité aux normes en matière d'amortissement.Preferably, at least one material is transparent or translucent as long that it is not worn and makes it possible to visually distinguish a witness on the handle attesting to compliance with depreciation standards.

Complémentairement, et à titre de produit intermédiaire, la demanderesse propose aussi une poignée amovible pour outil manuel à percussion ou à vibration doté d'une poignée de préhension, poignée amovible caractérisée par le fait qu'elle comporte un témoin visuel d'usure, de préférence, un revêtement souple sur une armature rigide, le revêtement souple servant de témoin d'usure.In addition, and as an intermediate product, the plaintiff also offers a removable handle for a manual percussion tool or vibration with grip handle, removable handle characterized by the fact that it includes a visual wear indicator, preferably a flexible coating on a rigid frame, the flexible coating serving wear indicator.

Ainsi, il est aisé, quand le témoin indique une usure prononcée, de remplacer la poignée amovible.Thus, it is easy, when the indicator indicates pronounced wear, to replace the removable handle.

Avantageusement, c'est par opacification du revêtement souple que l'usure se manifeste. En s'opacifiant, le revêtement souple occulte un repère d'usure inscrit sur la poignée.Advantageously, it is by opacification of the flexible coating that wear manifests. By becoming opaque, the flexible coating obscures a mark of wear marked on the handle.

Avantageusement encore, l'armature ne recouvre pas le revêtement souple sur une partie centrale. Cela facilite le contrôle visuel d'usure.Advantageously also, the frame does not cover the flexible coating on a central part. This makes it easier to visually check for wear.

Avantageusement toujours, le revêtement souple comporte une excroissance agencée pour s'emboíter dans une ouverture de la poigne de préhension et l'armature comporte des moyens de fixation de la poignée amovible sur la poignée de préhension.Still advantageously, the flexible coating comprises a protuberance arranged to fit into an opening in the handle of gripping and the frame includes means for fixing the handle removable on the grip.

L'invention sera mieux comprise à l'aide de la description suivante et de la forme de réalisation préférée de l'outil et de la poignée de l'invention, en référence au dessin en annexe, sur lequel

  • la figure 1 représente une vue en perspective de l'outil ;
  • la figure 2 montre des coupes schématiques du revêtement de la poignée selon l'invention et
  • la figure 3 représente une vue en perspective de la poignée amovible selon l'invention.
The invention will be better understood using the following description and the preferred embodiment of the tool and the handle of the invention, with reference to the accompanying drawing, in which
  • Figure 1 shows a perspective view of the tool;
  • FIG. 2 shows schematic sections of the coating of the handle according to the invention and
  • Figure 3 shows a perspective view of the removable handle according to the invention.

En référence à la figure 1, l'outil manuel à percussion 1 comporte une poignée 10 pour travailler en percussion selon l'axe 3 de l'outil.With reference to FIG. 1, the manual percussion tool 1 comprises a handle 10 for percussion work along axis 3 of the tool.

La poignée de préhension 10 est couverte d'un revêtement 11 ou couche souple en matériau amortissant les chocs provoqués par les percussions de l'outil.The grip handle 10 is covered with a coating 11 or layer flexible in material absorbing the shocks caused by the percussions of the tool.

Bien que ce ne soit pas forcément nécessaire, le revêtement comporte ici une seconde couche 12, en doublage de la couche 11, amortissant les vibrations de la main sur la poignée.Although it is not necessarily necessary, the coating here comprises a second layer 12, in doubling of layer 11, absorbing the vibrations of the hand on the handle.

Ces couches sont collées ou surmoulées l'une sur l'autre et la première fixée ou montée sur la poignée de préhension, en forment le revêtement et sont toutes deux de matériaux appropriés pour amortir l'ensemble du spectre des fréquences de chocs et de vibrations générées par les percussions de l'outil. Notamment, le matériau de la première couche souple, filtre les fréquences élevées générées par les chocs et le matériau de la seconde couche, plus rigide, filtre les fréquences plus faibles non filtrées par la première couche.These layers are glued or molded one on top of the other and the first fixed or mounted on the grip, form the covering and are both of suitable materials to dampen the entire spectrum of frequencies of shocks and vibrations generated by the percussion of the tool. In particular, the material of the first flexible layer filters the frequencies impact and second layer material, plus rigid, filters the lower frequencies not filtered by the first layer.

L'outil et la poignée de préhension admettent pour l'essentiel un plan de symétrie 4 qui sépare la coque de l'outil en deux demi-coquilles 10" et 10"' (voir fig. 3). Ici, en référence à la figure 2, les couches 11, 12 et la poignée de préhension 10 sont appliquées selon des surfaces d'appui qui sont une surface de contact 70 entre la couche souple 11 et la poignée de préhension 10, une surface de jonction 60 entre les deux couches du revêtement 11, 12, et une surface externe de préhension manuelle. Ces surfaces d'appui sont au moins du second ordre, s'apparentant dans leurs parties les plus exposées aux chocs, c'est-à-dire dans le voisinage de leur intersection avec l'axe 3, sensiblement à des paraboloïdes hyperboliques de sorte que le plan de symétrie 4 les coupe sensiblement selon des paraboles 111, 112 pour la couche 11 et 121, 122 pour la couche 12, et tout plan 5 à 7 perpendiculaire au plan 4 et parallèle à l'axe 3 les coupe selon des paraboles 113, 114 à 115, 116, pour la couche 11, et 123, 124 à 125, 126, pour la couche 12. Mais ces surfaces diffèrent cependant des paraboloïdes hyperboliques par le fait que les paraboles 113, 114, 123, 124 et les paraboles 115, 116, 125, 126 n'ont pas, deux à deux, par exemple 113 et 115, des paramètres égaux.The tool and the grip handle essentially accept a plane of symmetry 4 which separates the tool shell into two 10 "and 10" half-shells (see fig. 3). Here, with reference to Figure 2, layers 11, 12 and the handle gripping 10 are applied according to bearing surfaces which are a contact surface 70 between the flexible layer 11 and the grip handle 10, a junction surface 60 between the two layers of the covering 11, 12, and an external surface for manual gripping. These bearing surfaces are at less of the second order, akin to their most exposed parts to shocks, that is to say in the vicinity of their intersection with axis 3, substantially to hyperbolic dishes so the plane of symmetry 4 cuts them substantially along parabolas 111, 112 for the layer 11 and 121, 122 for layer 12, and any plane 5 to 7 perpendicular in plane 4 and parallel to axis 3 cuts them according to parabolas 113, 114 to 115, 116, for layer 11, and 123, 124 to 125, 126, for layer 12. But these surfaces differ from hyperbolic dishes, however, in that dishes 113, 114, 123, 124 and dishes 115, 116, 125, 126 have not, two by two, for example 113 and 115, equal parameters.

Rappelons que le paramètre P d'une parabole est égal au double de la distance séparant son foyer de son point qui en est le plus proche.Recall that the parameter P of a parabola is equal to twice the distance separating its focus from its nearest point.

Ici, ces paramètres P dépendent de l'épaisseur e1, e3 ou e2, e4 de chacune des couches dans le plan 5, 7 et de l'épaisseur E de la poignée de préhension de façon à égaliser au mieux les contraintes dans les matériaux les constituant, depuis l'axe 3 intersection des plans 5 et 4 jusqu'à l'axe 6 intersection des plans 7 et 4 tout en couvrant complètement la poignée de préhension.Here, these parameters P depend on the thickness e 1 , e 3 or e 2 , e 4 of each of the layers in the plane 5, 7 and on the thickness E of the grip handle so as to equalize the stresses as well as possible. in the constituent materials, from axis 3 intersection of planes 5 and 4 to axis 6 intersection of planes 7 and 4 while completely covering the grip handle.

Plus précisément, si l'axe 6 est à une distance d de l'axe 3 telle que la couche a une épaisseur négligeable, l'épaisseur sur l'axe 3 étant maximale et égale à e0, alors, en un axe 8 parallèle intermédiaire et distant de x de l'axe 3, on choisira une épaisseur ex telle que sensiblement : (R1)   ex = eo d-xd More precisely, if the axis 6 is at a distance d from the axis 3 such that the layer has a negligible thickness, the thickness on the axis 3 being maximum and equal to e 0 , then, in an axis 8 parallel intermediate and distant from x of axis 3, we will choose a thickness e x such that substantially: (R1) e x = e o dx d

Et les paramètres P des paraboles sont choisis en fonction de ces épaisseurs,And the parameters P of the parabolas are chosen according to these thicknesses,

Par exemple, sur la figure 2, si on choisit une surface de contact sur la poignée de préhension telle que la parabole 151 d'axe 8 équivalente de la parabole 113 d'axe 3 a un paramètre Px, et la couche 11 une épaisseur ex, la poignée de préhension ayant une épaisseur E constante, la parabole 152 de même axe et équivalente à la parabole 114, aura un paramètre Py tel que, sensiblement : (R2)   Py = Px1 - 8Pxex E2 For example, in FIG. 2, if a contact surface is chosen on the grip handle such that the parabola 151 of axis 8 equivalent to the parabola 113 of axis 3 has a parameter Px, and the layer 11 a thickness e x , the grip having a constant thickness E, the parabola 152 of the same axis and equivalent to the parabola 114, will have a parameter Py such that, substantially: (R2) Py = px 1 - 8Px e x E 2

Ainsi, une fois fixée la valeur du paramètre P de la parabole 113, des épaisseurs e1, e2 des couches 11, 12 et de l'épaisseur E de la poignée, on peut, grâce aux relations R1 et R2, définir entièrement les surfaces d'appui.Thus, once the value of the parameter P of the parabola 113, of the thicknesses e 1 , e 2 of the layers 11, 12 and of the thickness E of the handle, is fixed, it is possible, thanks to the relations R1 and R2, to define entirely the bearing surfaces.

Bien sûr, on peut aussi choisir E en fonction de x.Of course, we can also choose E as a function of x.

De même, les surfaces d'appui sont telles que les paraboles dans les plans 5 et 7 et un plan intermédiaire passant par l'axe 8 se rapprochent les unes des autres d'autant plus qu'on est éloigné des axes 3, 8 et 6 de sorte qu'on tend à égaliser les contraintes dans lesdits matériaux dans les plans tels que 5, 8 et 7. La relation R2 respecte la condition d'épaisseur nulle à une distance E/2 desdits axes.Similarly, the bearing surfaces are such that the parabolas in the planes 5 and 7 and an intermediate plane passing through the axis 8 approach each other others all the more as one is distant from axes 3, 8 and 6 so that one tends to equalize the stresses in said materials in planes such as 5, 8 and 7. The relation R2 respects the condition of zero thickness at a distance E / 2 of said axes.

On peut obtenir ainsi une égalisation tridimensionnelle des contraintes dans les couches, une usure homogène des matériaux et une durée de vie optimale à cet égard. Corrélativement, si une couche 11, 12 est transparente, elle devient, par usure, opaque de façon uniforme, ce qui a pour effet d'occulter la surface de contact de la couche 11 sur la poignée 10 à la vue de l'utilisateur, et donc un témoin visuel d'usure imprimé sur la surface de la couche 11 ou de la poignée 10 de préhension.One can thus obtain a three-dimensional equalization of the constraints in the layers, uniform wear of the materials and a lifetime optimal in this regard. Correlatively, if a layer 11, 12 is transparent, it becomes, through wear, uniformly opaque, which has to obscure the contact surface of the layer 11 on the handle 10 in full view of the user, and therefore a visual wear indicator printed on the surface of the layer 11 or of the grip handle 10.

En référence à la figure 3, la poignée (10) de préhension de l'outil est équipée d'une poignée amovible (10') constituant le revêtement tel que précédemment décrit, c'est-à-dire comportant deux couches de matériaux différents, l'une, revêtement souple 11, filtrant plutôt les chocs, par exemple surmoulée sur la seconde, armature rigide 12, filtrant plutôt les vibrations, avec une surface de jonction appropriée 60.Referring to Figure 3, the handle (10) for gripping the tool is equipped with a removable handle (10 ') constituting the covering as previously described, that is to say comprising two layers of materials different, one, flexible coating 11, rather filtering shocks, by example overmolded on the second, rigid frame 12, filtering rather vibrations, with a suitable joining surface 60.

La poignée amovible 10' s'adapte sur la poignée de préhension 10 selon une surface de contact du type précédemment décrit, mais comporte une excroissance 45 de sa couche souple 11 s'emboítant dans une ouverture 20 ménagée à la partie supérieure des deux demi-coquilles 10", 10"' de l'outil et de sa poignée de préhension. The removable handle 10 'adapts to the grip handle 10 according to a contact surface of the type described above, but has a protuberance 45 of its flexible layer 11 fitting into an opening 20 formed in the upper part of the two half-shells 10 ", 10" 'of the tool and its grip handle.

La poignée amovible comporte aussi un moyen de fixation, par exemple une vis 41, fixant, par un trou 40 prévu dans la partie inférieure de l'armature 12, l'armature à la partie inférieure de la poignée de préhension, munie d'un moyen de fixation complémentaire, par exemple un trou fileté 30. L'armature est agencée pour laisser apparente la surface de jonction en une partie centrale 50 de la poignée amovible située en regard d'une inscription 25 d'un repère d'usure sur la surface de contact 70 de la poignée 10 de préhension et de la poignée 10' amovible, de sorte que, la couche souple 11 étant transparente, ce repère est visuellement apparent dans cette partie centrale.The removable handle also includes a fixing means, for example a screw 41, fixing, by a hole 40 provided in the lower part of the frame 12, the frame at the bottom of the grip handle, provided with additional fixing means, for example a threaded hole 30. The reinforcement is arranged to leave visible the junction surface in a central part 50 of the removable handle located opposite a marking 25 of a wear mark on the contact surface 70 of the handle 10 gripping and removable handle 10 ', so that the diaper flexible 11 being transparent, this mark is visually apparent in this central part.

La vue de ce repère s'estompant avec l'usure de la couche souple, la partie centrale 50 constitue le témoin d'usure.The sight of this mark fading with the wear of the flexible layer, the part central 50 is the wear indicator.

Quand le repère n'est plus visible, il suffit de dévisser la vis 41, de déboíter l'excroissance 45 de l'ouverture 20 pour remplacer la poignée amovible 10' usagée.When the mark is no longer visible, simply unscrew the screw 41, disengage the projection 45 of the opening 20 to replace the removable handle 10 ' used.

On a considéré un outil avec une poignée à revêtement comportant deux couches, dont une couche souple et une couche rigide, la couche souple étant en contact avec la poignée. Naturellement, l'inverse pourrait être également envisagé, c'est-à-dire de disposer la couche rigide au contact de la poignée.We considered a tool with a coated handle having two layers, including a flexible layer and a rigid layer, the flexible layer being in contact with the handle. Of course, the reverse could be also envisaged, that is to say to have the rigid layer in contact with the handle.

Claims (18)

Outil manuel à percussion ou à vibration (1) comportant une poignée de préhension (10) avec un revêtement (11, 12) en matériau amortisseur, caractérisé par le fait que la poignée comporte un témoin visuel d'usure (11, 25, 50).Manual impact or vibration tool (1) comprising a grip handle (10) with a covering (11, 12) made of shock-absorbing material, characterized in that the handle comprises a visual wear indicator (11, 25, 50 ). Outil selon la revendication 1, dans lequel c'est le matériau du revêtement (11, 12) de la poignée (10) qui constitue le témoin d'usure.The tool of claim 1, wherein it is the material of the coating (11, 12) of the handle (10) which constitutes the wear indicator. Outil selon la revendication 2, dans lequel le matériau trahit visuellement son usure par son changement d'état.The tool of claim 2, wherein the material betrays visually its wear by its change of state. Outil selon l'une des revendications 1 à 3, dans laquelle le revêtement (11, 12) épouse la poignée selon une conformation (111, 112, 113, 114; 121, 122, 123, 124) qui égalise les contraintes de chocs et de vibrations mécaniques dans ledit matériau.Tool according to one of claims 1 to 3, in which the coating (11, 12) marries the handle according to a conformation (111, 112, 113, 114; 121, 122, 123, 124) which equalizes the stresses of shock and vibration mechanical in said material. Outil selon la revendication 4, dans lequel la forme du revêtement est symétrique par rapport à un plan de symétrie (4) de l'outil (1) et est délimitée par une surface de contact et une surface externe dont les sections dans ce plan de symétrie sont sensiblement des courbes (111, 112; 121, 122) d'axes de symétrie parallèles à l'axe (3) de travail et de convexités orientées vers l'outil.The tool of claim 4, wherein the shape of the coating is symmetrical about a plane of symmetry (4) of the tool (1) and is delimited by a contact surface and an external surface whose sections in this plane of symmetry are substantially curves (111, 112; 121, 122) axes of symmetry parallel to the work axis (3) and convexities oriented towards the tool. Outil selon la revendication 5, dans lequel les courbes sont telles que l'écart ex entre les courbes dans le plan de symétrie (4), à une distance x donnée de l'axe (3) de symétrie, et cette distance x sont liés par une relation quadratique (R1).Tool according to claim 5, in which the curves are such that the distance e x between the curves in the plane of symmetry (4), at a given distance x from the axis (3) of symmetry, and this distance x are linked by a quadratic relation (R1). Outil selon l'une des revendications 5 et 6, dans lequel des plans (5, 7) perpendiculaires au plan de symétrie (4) et parallèles à l'axe de travail (3) coupent les surfaces délimitant le revêtement (11, 12) selon des courbes (113, 114; 123, 124 ; 115, 116 ; 125, 126) du second degré d'axes (3, 8, 6) parallèles à l'axe de travail.Tool according to either of Claims 5 and 6, in which planes (5, 7) perpendicular to the plane of symmetry (4) and parallel to the working axis (3) cut the surfaces delimiting the covering (11, 12) according to curves (113, 114; 123, 124; 115, 116; 125, 126) of the second degree of axes (3, 8, 6) parallel to the working axis. Outil selon la revendication 7, dans lequel ces courbes du second degré sont des paraboles dont les paramètres P sont fonctions (R2) de l'écart ex du revêtement selon l'axe (3, 8, 6). Tool according to claim 7, in which these second degree curves are parabolas whose parameters P are functions (R2) of the difference e x of the coating along the axis (3, 8, 6). Outil selon l'une des revendications précédentes, dans lequel le revêtement comporte deux couches (11, 12) de matériau, d'amortissements différents s'emboítant selon une surface de jonction (60) similaire à la surface de contact (70) séparant la poignée du revêtement.Tool according to one of the preceding claims, in which the coating has two layers (11, 12) of material, cushioning different fitting together according to a junction surface (60) similar to the contact surface (70) separating the handle from the covering. Outil selon l'une des revendications précédentes, dans lequel au moins un matériau (11) est transparent ou translucide tant qu'il n'est pas usé.Tool according to one of the preceding claims, in which at least a material (11) is transparent or translucent as long as it is not worn. Outil selon la revendication 10, dans lequel le matériau transparent (11) permet de distinguer visuellement un témoin (25) sur la poignée (10)The tool of claim 10, wherein the transparent material (11) makes it possible to visually distinguish a witness (25) on the handle (10) Poignée amovible (10') pour outil manuel (1) à percussion ou à vibration doté d'une poignée de préhension (10), poignée amovible caractérisée par le fait qu'elle comporte un témoin visuel d'usure.Removable handle (10 ') for a percussion or vibration manual tool (1) provided with a grip handle (10), removable handle characterized in that it includes a visual wear indicator. Poignée selon la revendication 12, dans laquelle il est prévu un revêtement souple (11) sur une armature rigide (12), le revêtement souple servant de témoin d'usure.Handle according to claim 12, in which a flexible covering (11) on a rigid frame (12), the flexible covering serving as a wear indicator. Poignée selon l'une des revendications 12 et 13, dans laquelle l'usure se manifeste par opacification du revêtement souple (11).Handle according to one of claims 12 and 13, in which the wear manifests itself by clouding of the flexible coating (11). Poignée selon la revendication 14, dans laquelle est prévu un repère (25) d'usure inscrit sur la poignée (10).Handle according to claim 14, in which a mark is provided (25) of wear inscribed on the handle (10). Poignée selon l'une des revendications 12 à 15, dans laquelle l'armature (12) ne recouvre pas le revêtement souple (11) sur une partie centrale (50).Handle according to one of claims 12 to 15, in which the frame (12) does not cover the flexible covering (11) on a part central (50). Poignée selon l'une des revendications 12 à 16, dans laquelle le revêtement souple (11) comporte une excroissance (45) agencée pour s'emboíter dans une ouverture (20) de la poignée de préhension (10).Handle according to one of claims 12 to 16, in which the flexible covering (11) has a protrusion (45) arranged to fit into an opening (20) of the grip handle (10). Poignée selon la revendication 17, dans laquelle l'armature (12) comporte des moyens (40, 41) de fixation de la poignée amovible (10') sur la poignée de préhension (10).Handle according to claim 17, in which the frame (12) comprises means (40, 41) for fixing the removable handle (10 ') to the grip handle (10).
EP04290439A 2003-02-20 2004-02-19 Percussive or vibratory hand tool with handle Withdrawn EP1449625A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0302092A FR2851492B1 (en) 2003-02-20 2003-02-20 MANUAL TOOL WITH PERCUSSION OR VIBRATION WITH GRIPPING HANDLE
FR0302092 2003-02-20

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EP1449625A2 true EP1449625A2 (en) 2004-08-25
EP1449625A3 EP1449625A3 (en) 2004-09-15

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EP04290439A Withdrawn EP1449625A3 (en) 2003-02-20 2004-02-19 Percussive or vibratory hand tool with handle

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EP (1) EP1449625A3 (en)
AU (1) AU2004200455B2 (en)
CA (1) CA2458051C (en)
FR (1) FR2851492B1 (en)

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Publication number Priority date Publication date Assignee Title
DE102009029626A1 (en) 2009-09-21 2011-03-24 Robert Bosch Gmbh Hand tool
USD646947S1 (en) 2010-08-13 2011-10-18 Black & Decker Inc. Drill

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Publication number Priority date Publication date Assignee Title
USD609544S1 (en) 2009-02-24 2010-02-09 Black & Decker, Inc. Drill driver
USD617622S1 (en) 2009-09-30 2010-06-15 Black & Decker Inc. Impact driver
USD626394S1 (en) 2010-02-04 2010-11-02 Black & Decker Inc. Drill

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GB1252821A (en) * 1969-06-23 1971-11-10

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DE1759531C3 (en) * 1968-05-11 1974-02-28 Held & Francke, Bauaktiengesellschaft, 8000 Muenchen Tubular, elastically expandable sealing device for delimiting the concreting sections when creating diaphragm walls

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GB1252821A (en) * 1969-06-23 1971-11-10

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009029626A1 (en) 2009-09-21 2011-03-24 Robert Bosch Gmbh Hand tool
CN102029604A (en) * 2009-09-21 2011-04-27 罗伯特·博世有限公司 Hand-held power tool
CN102029604B (en) * 2009-09-21 2016-03-16 罗伯特·博世有限公司 Hand held power machine
DE102009029626B4 (en) 2009-09-21 2020-04-23 Robert Bosch Gmbh Hand tool
USD646947S1 (en) 2010-08-13 2011-10-18 Black & Decker Inc. Drill

Also Published As

Publication number Publication date
CA2458051C (en) 2008-06-17
AU2004200455A1 (en) 2004-09-09
FR2851492B1 (en) 2006-03-03
CA2458051A1 (en) 2004-08-20
FR2851492A1 (en) 2004-08-27
EP1449625A3 (en) 2004-09-15
AU2004200455B2 (en) 2006-02-09

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