EP3093111B1 - Cutting tool with removable blade and blade for such a tool - Google Patents

Cutting tool with removable blade and blade for such a tool Download PDF

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Publication number
EP3093111B1
EP3093111B1 EP16168434.5A EP16168434A EP3093111B1 EP 3093111 B1 EP3093111 B1 EP 3093111B1 EP 16168434 A EP16168434 A EP 16168434A EP 3093111 B1 EP3093111 B1 EP 3093111B1
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EP
European Patent Office
Prior art keywords
blade
fixing
handle
hollow body
cutting
Prior art date
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Active
Application number
EP16168434.5A
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German (de)
French (fr)
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EP3093111A1 (en
Inventor
Lionel Marcon
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Pierre Grehal et Cie SA
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Pierre Grehal et Cie SA
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Publication date
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Publication of EP3093111A1 publication Critical patent/EP3093111A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B13/00—Hand shears; Scissors
    • B26B13/04—Hand shears; Scissors with detachable blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B29/00—Guards or sheaths or guides for hand cutting tools; Arrangements for guiding hand cutting tools
    • B26B29/04—Guards or sheaths for scissors, e.g. combined with manicuring appliances
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/22—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by cutting, e.g. incising
    • B28D1/228—Hand-held or hand-operated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/32—Methods and apparatus specially adapted for working materials which can easily be split, e.g. mica, slate, schist
    • B28D1/327—Methods and apparatus specially adapted for working materials which can easily be split, e.g. mica, slate, schist for cutting or shearing easily splittable working materials

Definitions

  • the invention relates to a cutting tool with a removable blade, in particular for cutting natural or synthetic slates, a blade for such a tool and a blade changing method for such a tool.
  • This type of tool has a general shape of clamp, with a blade that undergoes the wear of successive cuts. It is therefore necessary to be able to change the blade.
  • FIGS. Figures 1 to 5 A tool for cutting natural or synthetic slates known from the state of the art, for example under the name Mat® sold by EDMA, is illustrated in FIGS. Figures 1 to 5 .
  • such a tool 100 comprises a hollow body 101 provided with a surface 102 for supporting the plate A to be cut and two parallel flanges 103, perpendicular to the support surface 102.
  • a first gripping sleeve 104 is fixedly mounted relative to the hollow body 101, and a second gripping sleeve 105 is pivotally mounted on the hollow body by an attachment end 106 and about an axis of rotation 107.
  • This attachment end 106 has two attachment walls between which are inserted two spacers 108 between which is adjusted the blade 109 (see figure 3 ).
  • the handle, the spacers and the blade are inserted between the two flanges 103 of the hollow body.
  • Each of these components comprises a first series of holes facing each other in the position of use, so as to constitute a passage for the axis of rotation 107.
  • a spring is provided between the pivoting handle and the fixed handle to allow the automatic spacing of the pivoting handle relative to the fixed handle.
  • the axis of rotation 107 ensures both the articulation of the handle, but also the attachment of the blade.
  • the handle, the spacers and the blade also include a second set of holes to allow passage of a second axis, providing a second point of attachment of the blade.
  • the attachment on the flanges, on both sides of the pivoting handle and the blade, allows optimal retention and good guidance of the blade during cutting.
  • This type of structure is also known from the documents FR2914211 , FR844117 and DE20005232 which have a blade whose axis of rotation passes through a hole in the cutting blade.
  • the object of the present invention is therefore to provide a tool for easy blade change, that is to say without risk of losing parts, while being simple design.
  • the oblong slot may comprise an open end having a flare for guiding the axis of rotation, of width greater than the width of the notch.
  • a manual plate cutting tool according to the invention is illustrated in figure 6 , in the closed position, and figure 7 in open position.
  • the tool 200 comprises a hollow body 201 delimited by a surface 202 for supporting the plate to be cut and two parallel flanges 203, perpendicular to the support surface 202.
  • the support surface 202 of the plate A has a slot 202a for the blade passage, so that in use the blade 209 enters the slot 202a and shears the plate A to be cut.
  • the hollow body 201 is in two parts. It comprises a first part 201a provided with a portion 201a1 for fixing the first grip sleeve 204 and two parallel flanges 201a2 (see FIG. figure 10 ), and a second part 201b intended to cover the first part 201a in the use position, and comprising the support surface 202 of the cutting plate and two flanges 201b1 for fastening to the flanges 201a2 of the first part 201a.
  • the flanges 203 of the hollow body consist of the flanges 201a2 of the part 201a, and the flanges 201b1 of the part 201b.
  • the first grip sleeve 204 is fixedly mounted relative to the hollow body 201 through bolts 204a.
  • a second gripping sleeve 205 is pivotally mounted on the hollow body 201 by an attachment end 206 and around an axis of rotation 207.
  • the sleeves shown are made of sheet metal plate folded in U.
  • a spring is provided between the pivoting handle and the fixed handle to allow the automatic spacing of the pivoting handle relative to the fixed handle.
  • a blade 209 is attached to the tool at the attachment end 206 of the pivotal handle 205.
  • the attachment end 206 of the pivoting sleeve 205 has a width L2 smaller than the width L1 of the rest of the pivoting handle (the gripping portion), and comprises two fixing tabs 206a connected to the rest of the pivoting handle ( the gripping part) by a camber 206b (see Figures 8 and 9 ).
  • the fastening lugs 206a are spaced from each other by a distance e equal to a thickness e of the blade. They comprise, in or in addition each a through hole 206c, facing each other, for the passage of an attachment pin 210 of the blade 209.
  • This axis 210 may be a nut provided with bolts, as illustrated. , but also a pin provided with a return means, to allow removal without tools (not shown).
  • the tool according to the invention further comprises two spacers 208 disposed on either side of the fixing end 206, a spacer 208 between each fixing lug 206a and a flange 203 of the hollow body.
  • the blade, the fixing lugs, the spacers and the hollow body comprise holes facing each other in the position of use so as to constitute a passage for the axis of rotation 207.
  • the blade 209 includes a cutting portion 209a carrying the cutting edge 209b, and a securing portion 209c to the tool.
  • the blade 209 has a flat edge 209b adapted to slate cutting.
  • the blade 209 is inserted between the fixing tabs 206a so that the axis of rotation 207 is engaged freely in the oblong slot when the blade is in the use position. Then an axis or a fixing pin 210 is inserted into the holes 206c and 209e facing each other when the blade is in the use position, in order to fix the blade on the tool.
  • the oblong notch 209d is long enough for the axis of rotation 207 of the cutting tool inserted in the oblong slot, is located above the axis or the attachment pin 210 inserted into the through hole 209e.
  • the through hole 209e is arranged on the attachment portion 209c under the closed end 209d1 of the oblong slot 209d.
  • the hole is arranged at one end of the attachment portion 209c.
  • This arrangement allows the reversible attachment of the blade while allowing the pivoting of the blade assembly 209 / pivoting sleeve 205.
  • the hollow body 201 in particular the flange 203 (or the flanges 201a2), comprises (s) a notch 201c to allow the passage of the fixing pin of the blade when the latter is in the closed position.
  • the oblong slot 209d includes an open end having a flare 209f for guiding the axis of rotation 207, of greater width than the width of the notch.
  • the axis of rotation 207 thus serves simply to block in rotation the blade 209 around the fixing pin 210. It is the latter which ensures the reversible locking of the blade on the handle 205.
  • the tool itself is no longer disassembled, as in the state of the art, but only the blade is removed.
  • the double guide of the blade is however maintained thanks to the presence of the spacers between the handle and the hollow body.
  • the oblong notch has a length between the open end and the closed end greater than 0.5 cm.
  • the tool according to the invention is of simple design because only the rotary handle is modified and can be substituted without further modification to the tools already on the market.
  • the illustrated blade is suitable for cutting natural or synthetic slates.
  • the shape of the cutting edge of the blade can be adapted to any other type of cutting, as long as the fixing portion of the blade is in accordance with the invention, that is to say that it comprises an oblong slot and a closed through hole offset from the oblong light.
  • the blade may be a blade for a metal nibbler, of the type used to cut metal wall rails for plaster wall, and equipped with two handles and a blade adapted to shear the metal, the sleeves being according to the invention.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Scissors And Nippers (AREA)
  • Knives (AREA)

Description

L'invention concerne un outil de découpe à lame démontable, en particulier pour découper des ardoises naturelles ou synthétiques, une lame pour un tel outil et un procédé de changement de lame pour un tel outil.The invention relates to a cutting tool with a removable blade, in particular for cutting natural or synthetic slates, a blade for such a tool and a blade changing method for such a tool.

Ce type d'outil présente une forme générale de pince, avec une lame qui subit l'usure des coupes successives. Il est donc nécessaire de pouvoir changer la lame.This type of tool has a general shape of clamp, with a blade that undergoes the wear of successive cuts. It is therefore necessary to be able to change the blade.

Un outil de découpe des ardoises naturelles ou synthétiques connu de l'état de la technique, par exemple sous la dénomination Mat® vendu par la société EDMA, est illustré aux figures 1 à 5.A tool for cutting natural or synthetic slates known from the state of the art, for example under the name Mat® sold by EDMA, is illustrated in FIGS. Figures 1 to 5 .

En référence à ces figures, un tel outil 100 comprend un corps creux 101 muni d'une surface 102 de support de la plaque A à découper et deux flasques parallèles 103, perpendiculaires à la surface de support 102.With reference to these figures, such a tool 100 comprises a hollow body 101 provided with a surface 102 for supporting the plate A to be cut and two parallel flanges 103, perpendicular to the support surface 102.

Un premier manche de préhension 104 est monté fixe par rapport au corps creux 101, et un second manche de préhension 105 est monté pivotant sur le corps creux par une extrémité de fixation 106 et autour d'un axe de rotation 107.A first gripping sleeve 104 is fixedly mounted relative to the hollow body 101, and a second gripping sleeve 105 is pivotally mounted on the hollow body by an attachment end 106 and about an axis of rotation 107.

Cette extrémité de fixation 106 présente deux parois de fixation entre lesquelles sont insérées deux entretoises 108 entre lesquelles est ajustée la lame 109 (voir figure 3).This attachment end 106 has two attachment walls between which are inserted two spacers 108 between which is adjusted the blade 109 (see figure 3 ).

Le manche, les entretoises et la lame sont insérés entre les deux flasques 103 du corps creux. Chacun de ces composants comprend une première série de trous en regard les uns des autres en position d'utilisation, de manière à constituer un passage pour l'axe de rotation 107.The handle, the spacers and the blade are inserted between the two flanges 103 of the hollow body. Each of these components comprises a first series of holes facing each other in the position of use, so as to constitute a passage for the axis of rotation 107.

Un ressort, non illustré pour ne pas nuire à la clarté des figures, est prévu entre le manche pivotant et le manche fixe pour permettre l'écartement automatique du manche pivotant par rapport au manche fixe.A spring, not illustrated so as not to impair the clarity of the figures, is provided between the pivoting handle and the fixed handle to allow the automatic spacing of the pivoting handle relative to the fixed handle.

L'axe de rotation 107 assure à la fois l'articulation du manche, mais également la fixation de la lame.The axis of rotation 107 ensures both the articulation of the handle, but also the attachment of the blade.

Le manche, les entretoises et la lame comprennent également une deuxième série de trous pour permettre le passage d'un second axe, assurant un second point de fixation de la lame.The handle, the spacers and the blade also include a second set of holes to allow passage of a second axis, providing a second point of attachment of the blade.

La fixation sur les flasques, de part et d'autre du manche pivotant et de la lame, permet un maintien optimal et un bon guidage de la lame lors de la coupe.The attachment on the flanges, on both sides of the pivoting handle and the blade, allows optimal retention and good guidance of the blade during cutting.

Ce type de structure est également connu des documents FR2914211 , FR844117 et DE20005232 qui présentent une lame dont l'axe de rotation passe par un trou dans la lame de découpe.This type of structure is also known from the documents FR2914211 , FR844117 and DE20005232 which have a blade whose axis of rotation passes through a hole in the cutting blade.

Le problème posé par un tel outil de découpe selon l'état de la technique est la complexité de changement de lame.The problem posed by such a cutting tool according to the state of the art is the complexity of blade change.

Or, ces outils sont utilisés par des professionnels, de nombreuses fois, et la lame s'use.However, these tools are used by professionals, many times, and the blade wears out.

Pour la remplacer, il faut enlever les deux axes de fixation pour libérer la lame.To replace it, remove the two fixing pins to release the blade.

Ce faisant, on désolidarise le manche rotatif de l'outil, et les entretoises du manche rotatif.In doing so, it disengages the rotary handle of the tool, and the spacers of the rotating handle.

Changer une lame de découpe d'ardoise lorsqu'on est sur le toit d'une maison est donc dangereux car le risque de perdre des pièces est important.Changing a slate cutting blade when on the roof of a house is dangerous because the risk of losing parts is important.

L'objectif de la présente invention est donc de proposer un outil permettant un changement de lame aisé, c'est-à-dire sans risque de perdre des pièces, tout en étant de conception simple.The object of the present invention is therefore to provide a tool for easy blade change, that is to say without risk of losing parts, while being simple design.

À cette fin, l'invention a pour objet un outil manuel de découpe d'une plaque comprenant :

  • un corps creux, délimité par une surface de support de la plaque à découper et deux flasques parallèles, perpendiculaires à la surface de support;
  • un premier manche de préhension monté fixe par rapport au corps creux ;
  • un second manche comprenant une partie de préhension de largeur déterminée, monté pivotant sur le corps creux par une extrémité de fixation et autour d'un axe de rotation ; et
  • une lame fixée à l'extrémité de fixation du manche pivotant;
dans lequel l'extrémité de fixation du manche pivotant présente une largeur inférieure à la largeur de la partie de préhension du manche pivotant, et comprend deux pattes de fixation reliées à la partie de préhension du manche pivotant par une cambrure, espacées l'une de l'autre d'une distance égale à une épaisseur de la lame, et comprenant chacune un trou traversant, en regard l'un de l'autre, pour le passage d'un axe de fixation de la lame,
dans lequel la lame est insérée entre les pattes de fixation,
et dans lequel deux entretoises sont disposées de part et d'autre de l'extrémité de fixation, une entre chaque patte de fixation et le corps creux,
la lame, les pattes de fixation, les entretoises et le corps creux comprenant des trous en regard les uns des autres en position d'utilisation de manière à constituer un passage pour l'axe de rotation.To this end, the invention relates to a manual tool for cutting a plate comprising:
  • a hollow body delimited by a support surface of the cutting plate and two parallel flanges, perpendicular to the support surface;
  • a first gripping sleeve mounted fixed relative to the hollow body;
  • a second sleeve comprising a gripping portion of determined width, pivotally mounted on the hollow body by an attachment end and about an axis of rotation; and
  • a blade attached to the attachment end of the pivoting handle;
wherein the fixing end of the pivoting handle has a width less than the width of the gripping portion of the pivoting handle, and comprises two fixing lugs connected to the gripping portion of the pivoting handle by a camber, spaced one of the other a distance equal to a thickness of the blade, and each comprising a through hole facing each other, for the passage of a fastening axis of the blade,
in which the blade is inserted between the fastening tabs,
and in which two spacers are arranged on either side of the fixing end, one between each fixing lug and the hollow body,
the blade, the fixing lugs, the spacers and the hollow body comprising holes facing each other in the use position so as to constitute a passage for the axis of rotation.

Selon un mode de réalisation particulier,

  • la lame comprend une partie de coupe munie d'un tranchant, et une partie de fixation, cette dernière partie pouvant comprendre :
    • une encoche oblongue présentant une extrémité ouverte, une extrémité fermée et une largeur déterminée, encoche dans laquelle est engagé librement l'axe de rotation lorsque la lame est en position d'utilisation ; et
    • un trou traversant destiné à être en regard de deux trous traversant portés par l'extrémité de fixation du manche pivotant, et dans lesquels est engagé de manière réversible un pion de fixation lorsque la lame est en position d'utilisation.
  • l'encoche oblongue peut comprendre une extrémité ouverte présentant un évasement de guidage de l'axe de rotation, de largeur supérieure à la largeur de l'encoche.
  • la lame peut présenter un tranchant plat adapté à la découpe d'ardoise.
  • le corps creux peut comporter une encoche pour permettre le passage du pion de fixation de la lame lorsque cette dernière est en position fermée.
  • le corps creux peut comporter une première pièce munie d'une partie de fixation du premier manche de préhension et de deux flasques parallèles, et une deuxième pièce destinée à coiffer la première pièce en position d'utilisation, et comprenant la surface de support de la plaque à découper et deux flasques de fixation aux flasques de la première pièce.
According to a particular embodiment,
  • the blade comprises a cutting portion provided with a cutting edge, and a fixing portion, the latter part possibly comprising:
    • an oblong slot having an open end, a closed end and a predetermined width, notch in which is engaged freely the axis of rotation when the blade is in the position of use; and
    • a through hole intended to be opposite two through holes carried by the fixing end of the pivoting handle, and in which is reversibly engaged a fixing pin when the blade is in the use position.
  • the oblong notch may comprise an open end having a flare for guiding the axis of rotation, of greater width than the width of the notch.
  • the blade may have a flat edge adapted to slate cutting.
  • the hollow body may comprise a notch to allow the passage of the fixing pin of the blade when the latter is in the closed position.
  • the hollow body may comprise a first part provided with a fixing portion of the first handle and two parallel flanges, and a second part intended to cover the first part in the position of use, and comprising the support surface of the cutting plate and two flanges for fastening to the flanges of the first piece.

L'invention a également pour objet une lame pour un outil manuel de découpe d'une plaque selon l'invention précédente, la lame comprenant une partie de coupe munie d'un tranchant, et une partie de fixation, cette dernière comprenant :

  • une encoche oblongue présentant une extrémité ouverte, une extrémité fermée et une largeur déterminée ; et
  • un trou traversant.
The invention also relates to a blade for a manual tool for cutting a plate according to the preceding invention, the blade comprising a cutting portion provided with a cutting edge, and a fixing portion, the latter comprising:
  • an oblong slot having an open end, a closed end and a determined width; and
  • a through hole.

Selon un mode de réalisation particulier, l'encoche oblongue peut comprendre une extrémité ouverte présentant un évasement de guidage de l'axe de rotation, de largeur supérieure à la largeur de l'encoche.According to a particular embodiment, the oblong slot may comprise an open end having a flare for guiding the axis of rotation, of width greater than the width of the notch.

L'invention a également pour objet un manche de support de lame destiné à être monté pivotant sur le corps creux d'un outil manuel de découpe d'une plaque, comprenant :

  • un corps creux, délimité par une surface de support de la plaque à découper et deux flasques parallèles, perpendiculaires à la surface de support; et
  • un premier manche de préhension monté fixe par rapport au corps creux ; caractérisé en ce qu'il comprend une partie de préhension de largeur déterminée, et une extrémité de fixation de largeur inférieure à la largeur de la partie de préhension, l'extrémité de fixation comprenant deux pattes de fixation reliées à la partie de préhension par une cambrure, espacées l'une de l'autre d'une distance égale à une épaisseur d'une lame destinée à être insérée entre les pattes de fixation, et comprenant chacune un trou traversant, en regard l'un de l'autre, pour le passage, en position d'utilisation, d'un axe de fixation, et un trou traversant, en regard l'un de l'autre, pour le passage, en position d'utilisation, d'un axe de rotation sur les flasques du corps creux.
The invention also relates to a blade support sleeve intended to be pivotally mounted on the hollow body of a manual tool for cutting a plate, comprising:
  • a hollow body delimited by a support surface of the cutting plate and two parallel flanges, perpendicular to the support surface; and
  • a first gripping sleeve mounted fixed relative to the hollow body; characterized in that it comprises a gripping portion of a predetermined width, and an attachment end of a width smaller than the width of the gripping portion, the fastening end comprising two fastening tabs connected to the gripping portion by a camber, spaced from each other by a distance equal to a thickness of a blade intended to be inserted between the fixing lugs, and each comprising a through hole, facing each other, for the passage, in the position of use, of a fixing pin, and a through hole, facing one another, for the passage, in the use position, of an axis of rotation on the flanges hollow body.

L'invention a également pour objet un procédé de changement d'une lame précédente d'un outil selon l'invention précédente, comprenant les étapes suivantes :

  1. a) Saisir l'outil dans une main ;
  2. b) Avec l'autre main, saisir le pion de fixation de la lame et le dégager de la lame et du manche rotatif;
  3. c) Sortir la lame de la partie de fixation du manche rotatif en la faisant coulisser par rapport à l'axe de rotation pour retirer la lame du manche sans avoir à démonter le manche du corps creux ;
  4. d) Insérer une nouvelle lame selon l'une quelconque des revendications 8 ou 9 dans la partie de fixation du manche rotatif en engageant l'axe de rotation dans l'encoche oblongue jusqu'à ce que le trou traversant de la lame et les trous traversant de l'extrémité de fixation du manche rotatif soient en regard les uns des autres ; et
  5. e) Engager le pion de fixation à travers les trous de l'extrémité de fixation du manche rotatif et de la lame pour fixer la lame sur le manche sans avoir à démonter le manche du corps creux.
The invention also relates to a method of changing a previous blade of a tool according to the preceding invention, comprising the following steps:
  1. a) Grasp the tool in one hand;
  2. b) With the other hand, grasp the blade attachment pin and release it from the blade and rotating shaft;
  3. c) Pulling the blade from the fixing portion of the rotary handle by sliding it relative to the axis of rotation to remove the blade from the handle without having to disassemble the handle of the hollow body;
  4. d) inserting a new blade according to any one of claims 8 or 9 into the attachment portion of the rotating handle by engaging the axis of rotation in the oblong slot until the through hole of the blade and the holes passing through the fixing end of the rotary handle are facing each other; and
  5. e) Engage the securing pin through the holes in the attachment end of the rotating handle and blade to secure the blade to the handle without having to disassemble the handle of the hollow body.

D'autres caractéristiques de l'invention seront énoncées dans la description détaillée ci-après, faite en référence aux dessins annexés, qui représentent, respectivement :

  • la figure 1, une vue schématique en perspective d'un outil manuel de découpe de l'état de la technique en position de coupe d'un plaque ;
  • la figure 2, une vue schématique en coupe sagittale d'un outil manuel de découpe de l'état de la technique en position fermée ;
  • la figure 3, une vue schématique en perspective du manche de fixation de la lame de l'outil de la figure 2 ;
  • la figure 4, une vue schématique en perspective d'une lame de découpe de l'état de la technique ;
  • la figure 5, une vue schématique en coupe axiale partielle vue de dessus de l'outil de la figure 3 ;
  • les figures 6 et 7, des vues schématiques en coupe sagittale d'un outil manuel de découpe selon l'invention en position fermée et en position ouverte ;
  • la figure 8, une vue schématique en perspective éclatée d'un outil de découpe selon l'invention ;
  • la figure 9, une vue schématique en perspective du manche de fixation de la lame de l'outil de la figure 8 ; et
  • la figure 10, une vue schématique en coupe axiale partielle vue de dessus de l'outil de la figure 8.
Other characteristics of the invention will be set forth in the detailed description below, made with reference to the appended drawings, which represent, respectively:
  • the figure 1 , a schematic perspective view of a manual cutting tool of the state of the art in the cutting position of a plate;
  • the figure 2 , a schematic view in sagittal section of a manual cutting tool of the state of the art in the closed position;
  • the figure 3 , a schematic perspective view of the handle of the blade attachment of the tool of the figure 2 ;
  • the figure 4 , a schematic perspective view of a cutting blade of the state of the art;
  • the figure 5 , a schematic view in partial axial section seen from above of the tool of the figure 3 ;
  • the Figures 6 and 7 , schematic views in sagittal section of a manual cutting tool according to the invention in the closed position and in the open position;
  • the figure 8 , a diagrammatic perspective exploded view of a cutting tool according to the invention;
  • the figure 9 , a schematic perspective view of the handle of the blade attachment of the tool of the figure 8 ; and
  • the figure 10 , a schematic view in partial axial section seen from above of the tool of the figure 8 .

Un outil manuel de découpe de plaques selon l'invention est illustré en figure 6, en position fermée, et en figure 7 en position ouverte.A manual plate cutting tool according to the invention is illustrated in figure 6 , in the closed position, and figure 7 in open position.

Ces figures sont des vues de profile en coupe partielle.These figures are profile views in partial section.

L'outil 200 comprend un corps creux 201, délimité par une surface 202 de support de la plaque à découper et deux flasques parallèles 203, perpendiculaires à la surface de support 202.The tool 200 comprises a hollow body 201 delimited by a surface 202 for supporting the plate to be cut and two parallel flanges 203, perpendicular to the support surface 202.

La surface de support 202 de la plaque A comporte une fente 202a pour le passage de lame, de telle sorte qu'en utilisation la lame 209 pénètre dans la fente 202a et cisaille la plaque A à découper.The support surface 202 of the plate A has a slot 202a for the blade passage, so that in use the blade 209 enters the slot 202a and shears the plate A to be cut.

Dans l'exemple de réalisation illustré, le corps creux 201 est en deux parties. Il comporte une première pièce 201a munie d'une partie 201a1 de fixation du premier manche 204 de préhension et de deux flasques parallèles 201a2 (voir figure 10), et une deuxième pièce 201b destinée à coiffer la première pièce 201a en position d'utilisation, et comprenant la surface de support 202 de la plaque à découper et deux flasques 201b1 de fixation aux flasques 201a2 de la première pièce 201a.In the exemplary embodiment illustrated, the hollow body 201 is in two parts. It comprises a first part 201a provided with a portion 201a1 for fixing the first grip sleeve 204 and two parallel flanges 201a2 (see FIG. figure 10 ), and a second part 201b intended to cover the first part 201a in the use position, and comprising the support surface 202 of the cutting plate and two flanges 201b1 for fastening to the flanges 201a2 of the first part 201a.

Ainsi, dans cet exemple de réalisation, les flasques 203 du corps creux sont constitués des flasques 201a2 de la pièce 201a, et des flasques 201b1 de la pièce 201b.Thus, in this exemplary embodiment, the flanges 203 of the hollow body consist of the flanges 201a2 of the part 201a, and the flanges 201b1 of the part 201b.

Le premier manche de préhension 204 est monté fixe par rapport au corps creux 201 grâce à des boulons 204a.The first grip sleeve 204 is fixedly mounted relative to the hollow body 201 through bolts 204a.

Un second manche de préhension 205, de largeur déterminée L1, est monté pivotant sur le corps creux 201 par une extrémité de fixation 206 et autour d'un axe de rotation 207.A second gripping sleeve 205, of determined width L1, is pivotally mounted on the hollow body 201 by an attachment end 206 and around an axis of rotation 207.

Les manches illustrés sont constitués de plaque de tôle pliées en U.The sleeves shown are made of sheet metal plate folded in U.

Un ressort, non illustré pour ne pas nuire à la clarté des figures, est prévu entre le manche pivotant et le manche fixe pour permettre l'écartement automatique du manche pivotant par rapport au manche fixe.A spring, not illustrated so as not to impair the clarity of the figures, is provided between the pivoting handle and the fixed handle to allow the automatic spacing of the pivoting handle relative to the fixed handle.

Une lame 209 est fixée à l'outil au niveau de l'extrémité de fixation 206 du manche pivotant 205.A blade 209 is attached to the tool at the attachment end 206 of the pivotal handle 205.

Selon l'invention, l'extrémité de fixation 206 du manche pivotant 205 présente une largeur L2 inférieure à la largeur L1 du reste du manche pivotant (la partie de préhension), et comprend deux pattes de fixation 206a reliées au reste du manche pivotant (la partie de préhension) par une cambrure 206b (voir les figures 8 et 9).According to the invention, the attachment end 206 of the pivoting sleeve 205 has a width L2 smaller than the width L1 of the rest of the pivoting handle (the gripping portion), and comprises two fixing tabs 206a connected to the rest of the pivoting handle ( the gripping part) by a camber 206b (see Figures 8 and 9 ).

Les pattes de fixation 206a sont espacées l'une de l'autre d'une distance e égale à une épaisseur e de la lame. Elles comprennent, en ou outre chacune un trou traversant 206c, en regard l'un de l'autre, pour le passage d'un axe de fixation 210 de la lame 209. Cet axe 210 peut être un écrou muni de boulons, comme illustré, mais également un pion muni d'un moyen de rappel, afin de permettre un démontage sans outils (non illustré).The fastening lugs 206a are spaced from each other by a distance e equal to a thickness e of the blade. They comprise, in or in addition each a through hole 206c, facing each other, for the passage of an attachment pin 210 of the blade 209. This axis 210 may be a nut provided with bolts, as illustrated. , but also a pin provided with a return means, to allow removal without tools (not shown).

L'outil selon l'invention comprend, en outre, deux entretoises 208 disposées de part et d'autre de l'extrémité de fixation 206, une entretoise 208 entre chaque patte de fixation 206a et un flasque 203 du corps creux.The tool according to the invention further comprises two spacers 208 disposed on either side of the fixing end 206, a spacer 208 between each fixing lug 206a and a flange 203 of the hollow body.

La lame, les pattes de fixation, les entretoises et le corps creux comprennent des trous en regard les uns des autres en position d'utilisation de manière à constituer un passage pour l'axe de rotation 207.The blade, the fixing lugs, the spacers and the hollow body comprise holes facing each other in the position of use so as to constitute a passage for the axis of rotation 207.

La lame 209 comprend une partie de coupe 209a portant le tranchant 209b, et une partie de fixation 209c à l'outil. Dans le mode de réalisation illustré, la lame 209 présente un tranchant plat 209b adapté à la découpe d'ardoise.The blade 209 includes a cutting portion 209a carrying the cutting edge 209b, and a securing portion 209c to the tool. In the illustrated embodiment, the blade 209 has a flat edge 209b adapted to slate cutting.

Cette partie de fixation 209c comprend :

  • une encoche oblongue 209d ; et
  • un trou traversant 209e destiné à être en regard des deux trous traversant 206c portés par l'extrémité de fixation 206 du manche pivotant 205, et dans lesquels est engagé de manière réversible un axe ou un pion de fixation 210 lorsque la lame est en position d'utilisation.
This fastening portion 209c comprises:
  • an oblong slot 209d; and
  • a through hole 209e intended to be opposite the two through holes 206c carried by the attachment end 206 of the pivoting sleeve 205, and in which is reversibly engaged an axis or an attachment pin 210 when the blade is in position d 'use.

La lame 209 est insérée entre les pattes de fixation 206a de telle sorte que l'axe de rotation 207 est engagé librement dans l'encoche oblongue lorsque la lame est en position d'utilisation. Puis un axe ou un pion de fixation 210 est inséré dans les trous 206c et 209e en regard les uns des autres lorsque la lame est en position d'utilisation, afin de fixer la lame sur l'outil.The blade 209 is inserted between the fixing tabs 206a so that the axis of rotation 207 is engaged freely in the oblong slot when the blade is in the use position. Then an axis or a fixing pin 210 is inserted into the holes 206c and 209e facing each other when the blade is in the use position, in order to fix the blade on the tool.

Ainsi, selon l'invention, en référence à la position d'utilisation dans laquelle la lame 209 est fixée sur le manche pivotant 205, l'encoche oblongue 209d est suffisamment longue pour que l'axe de rotation 207 de l'outil de découpe, inséré dans l'encoche oblongue, soit situé au-dessus de l'axe ou du pion de fixation 210 inséré dans le trou traversant 209e. En d'autres termes, en position d'utilisation, le trou traversant 209e est agencé sur la partie de fixation 209c sous l'extrémité fermée 209d1 de l'encoche oblongue 209d. De préférence, le trou est agencé à une extrémité de la partie de fixation 209c.Thus, according to the invention, with reference to the use position in which the blade 209 is fixed on the pivoting sleeve 205, the oblong notch 209d is long enough for the axis of rotation 207 of the cutting tool inserted in the oblong slot, is located above the axis or the attachment pin 210 inserted into the through hole 209e. In other words, in the use position, the through hole 209e is arranged on the attachment portion 209c under the closed end 209d1 of the oblong slot 209d. Preferably, the hole is arranged at one end of the attachment portion 209c.

Cet agencement permet la fixation réversible de la lame tout en permettant le pivotement de l'ensemble lame 209/manche pivotant 205.This arrangement allows the reversible attachment of the blade while allowing the pivoting of the blade assembly 209 / pivoting sleeve 205.

Selon l'axe ou le pion utilisé comme axe de verrouillage (ou de fixation) 210 de la lame 9, le corps creux 201, en particulier les flasque 203 (ou les flasques 201a2), comporte(nt) une encoche 201c pour permettre le passage du pion de fixation de la lame lorsque cette dernière est en position fermée.Depending on the axis or the pin used as the locking (or fixing) axis 210 of the blade 9, the hollow body 201, in particular the flange 203 (or the flanges 201a2), comprises (s) a notch 201c to allow the passage of the fixing pin of the blade when the latter is in the closed position.

Afin de faciliter l'insertion de la lame 209 dans l'outil, l'encoche oblongue 209d comprend une extrémité ouverte présentant un évasement 209f de guidage de l'axe de rotation 207, de largeur supérieure à la largeur de l'encoche.In order to facilitate the insertion of the blade 209 into the tool, the oblong slot 209d includes an open end having a flare 209f for guiding the axis of rotation 207, of greater width than the width of the notch.

Afin de procéder au changement de la lame selon l'invention dans l'outil selon l'invention il convient de :

  1. a) Saisir l'outil 200 dans une main ;
  2. b) Avec l'autre main, saisir l'axe ou le pion de fixation 210 de la lame 209 et le dégager de la lame 209 et du manche rotatif 205 ;
  3. c) Sortir la lame 209 de la partie de fixation 206 du manche rotatif 205 en la faisant coulisser par rapport à l'axe de rotation 207 pour retirer la lame 209 du manche 205 sans avoir à démonter le manche du corps creux ;
  4. d) Insérer une nouvelle lame 209 selon l'invention dans la partie de fixation 206 du manche rotatif 205 en engageant l'axe de rotation 207 dans l'encoche oblongue 209d jusqu'à ce que le trou traversant 209e de la lame 209 et les trous traversant 206c de l'extrémité de fixation 206 du manche rotatif 205 soient en regard les uns des autres ; Avantageusement, la longueur de l'encoche oblongue 209d est choisie pour que les trous 206c-209e de l'extrémité de fixation 206 et de la lame 209 soient en regard les uns des autres lorsque l'axe de rotation bute contre l'extrémité fermée 209d1 de l'encoche oblongue 209d ; et
  5. e) Engager l'axe ou le pion de fixation 210 à travers les trous 206c-209e de l'extrémité de fixation 206 du manche rotatif 205 et de la lame 209 pour fixer la lame sur le manche sans avoir à démonter le manche du corps creux.
In order to change the blade according to the invention in the tool according to the invention it is necessary to:
  1. a) Grasp the tool 200 in one hand;
  2. b) With the other hand, grasp the pin or the attachment pin 210 of the blade 209 and disengage it from the blade 209 and the rotary handle 205;
  3. c) Remove the blade 209 from the attachment portion 206 of the rotary handle 205 by sliding relative to the axis of rotation 207 to remove the blade 209 from the handle 205 without having to disassemble the handle of the hollow body;
  4. d) Inserting a new blade 209 according to the invention in the attachment portion 206 of the rotary handle 205 by engaging the axis of rotation 207 in the oblong slot 209d until the through hole 209e of the blade 209 and the through holes 206c of the fixing end 206 of the rotary handle 205 are facing each other; Advantageously, the length of the oblong notch 209d is chosen so that the holes 206c-209e of the fixing end 206 and of the blade 209 are facing each other when the axis of rotation abuts against the closed end 209d1 of the oblong slot 209d; and
  5. e) Engage the pin or the attachment pin 210 through the holes 206c-209e of the attachment end 206 of the rotary handle 205 and the blade 209 to fix the blade on the handle without having to disassemble the handle of the body hollow.

L'axe de rotation 207 sert donc simplement à bloquer en rotation la lame 209 autour de l'axe de fixation 210. C'est ce dernier qui assure le blocage réversible de la lame sur le manche 205.The axis of rotation 207 thus serves simply to block in rotation the blade 209 around the fixing pin 210. It is the latter which ensures the reversible locking of the blade on the handle 205.

Lorsque cet axe 210 est retiré, la lame peut être coulissée hors de l'extrémité de fixation 206 et donc de l'outil, sans avoir à retirer l'axe de rotation 207.When this pin 210 is withdrawn, the blade can be slid out of the fixing end 206 and thus of the tool, without having to remove the axis of rotation 207.

Il n'y a donc plus de risque de perdre, par exemple, les entretoises lors du changement de lame.There is therefore no risk of losing, for example, the spacers during the change of blade.

L'outil lui-même n'est plus démonté, comme dans l'état de la technique, mais seule la lame est retirée.The tool itself is no longer disassembled, as in the state of the art, but only the blade is removed.

Le double guidage de la lame est cependant maintenu grâce à la présence des entretoises entre le manche et le corps creux.The double guide of the blade is however maintained thanks to the presence of the spacers between the handle and the hollow body.

Afin d'assurer une fixation optimale, l'encoche oblongue présente une longueur prise entre l'extrémité ouverte et l'extrémité fermée supérieure à 0,5 cm.In order to ensure optimum fixation, the oblong notch has a length between the open end and the closed end greater than 0.5 cm.

L'outil selon l'invention est de conception simple car seul le manche rotatif est modifié et peut être substitué sans autre modification aux outils déjà sur le marché.The tool according to the invention is of simple design because only the rotary handle is modified and can be substituted without further modification to the tools already on the market.

Selon d'autres modes de réalisation non illustrés :
La lame illustrée est adaptée à la découpe d'ardoises naturelles ou synthétique. La forme du tranchant de la lame peut être adaptée à tout autre type de découpe, du moment que la partie de fixation de la lame est conforme à l'invention, c'est-à-dire qu'elle comprend une lumière oblongue et un trou fermé traversant décalé par rapport à la lumière oblongue. Par exemple, la lame peut être une lame pour une grignoteuse à métal, du type utilisé pour découper des rails d'ossature métallique pour paroi de plâtre, et équipée de deux manches et d'une lame adaptée à cisailler le métal, les manches étant conformes à l'invention.According to other non-illustrated embodiments:
The illustrated blade is suitable for cutting natural or synthetic slates. The shape of the cutting edge of the blade can be adapted to any other type of cutting, as long as the fixing portion of the blade is in accordance with the invention, that is to say that it comprises an oblong slot and a closed through hole offset from the oblong light. For example, the blade may be a blade for a metal nibbler, of the type used to cut metal wall rails for plaster wall, and equipped with two handles and a blade adapted to shear the metal, the sleeves being according to the invention.

Claims (10)

  1. Hand tool (200) for cutting a sheet (A), comprising:
    • a hollow body (201), delimited by a support surface (202) for the sheet (A) that is to be cut, and two parallel side plates (203, 201a2-201b1) perpendicular to the support surface (202);
    • a first handle (204) for grasping, mounted fixedly with respect to the hollow body;
    • a second handle (205) comprising a part for grasping of determined width (L1), pivot mounted on the hollow body via a fixing end (206) and about a pivot pin (207); and
    • a blade (209) fixed to the fixing end of the pivoting handle;
    characterized in that the fixing end (206) of the pivoting handle (205) has a width (L2) less than the width (L1) of the grasping part of the pivoting handle and comprises two fixing lugs (206a) connected to the grasping part of the pivoting handle by a curve (206b), spaced apart from one another by a distance (e) equal to the thickness (e) of the blade (209), and each comprising a through-hole (206c), facing one another, for the passage of a fixing pin (210),
    in that the blade (209) is inserted between the fixing lugs (206a),
    and in that two spacers (208) are positioned one on each side of the fixing end (206), one between each fixing lug (206a) and the hollow body (201),
    the blade, the fixing lugs, the spacers and the hollow body comprising holes facing one another in the position of use so as to constitute a passage for the pivot pin (207) .
  2. Tool according to Claim 1, in which the blade (209) comprises a cutting part (209a) provided with a cutting edge (209b), and a fixing part (209c), the latter part comprising:
    • an oblong slot (209d) having an open end, a closed end and a determined width, in which slot (209d) the pivot pin (207) is freely engaged when the blade is in the position of use; and
    • a through-hole (209e) intended to face two through-holes (206c) borne by the fixing end (206) of the pivoting handle, and in which a fixing peg (210) is reversibly engaged when the blade is in the position of use.
  3. Tool according to Claim 2, in which the oblong slot (209d) comprises an open end having a flared portion (209f), for guiding the pivot pin, of a width greater than the width of the slot.
  4. Tool according to any one of Claims 1 to 3, in which the blade has a flat cutting edge suited to the cutting of slate.
  5. Tool according to any one of Claims 1 to 4, in which the hollow body comprises a slot (201c) to allow the blade fixing peg to pass when the blade is in the closed position.
  6. Tool according to any one of Claims 1 to 5, in which the hollow body (201) comprises a first component (201a) equipped with a fixing part (201a1) for attaching the first handle (204) for grasping, and with two parallel side plates (201a2), and a second component (201b) intended to sit over the first component (201) in the position of use, and comprising the support surface (202) for supporting the sheet (A) that is to be cut, and two side plates (201b1) for attaching to the side plates (201a2) of the first component (201a).
  7. Blade (209) for a hand tool for cutting a sheet according to any one of Claims 1 to 6, characterized in that it comprises a cutting part (209a) equipped with a cutting edge (209b), and a fixing part (209c), the latter part comprising:
    • an oblong slot (209d) having an open end, a closed end and a determined width, the slot being intended to accept the pivot pin (207) freely when the blade is in the position of use; and
    • a through-hole (209e) intended to accept a fixing peg (210) in the position of use.
  8. Blade according to Claim 7, in which the oblong slot (209d) comprises an open end exhibiting a flared portion (209f) for guiding the pivot pin (207), of a width greater than that of the slot.
  9. Blade support handle intended to be pivot mounted on the hollow body of a hand tool for cutting a sheet (A), comprising:
    • a hollow body (201), delimited by a support surface (202) for supporting the sheet (A) that is to be cut, and two parallel side plates (203, 201a2-201b1), which are perpendicular to the support surface (202); and
    • a first handle (204) for grasping, mounted fixedly with respect to the hollow body;
    characterized in that it comprises a part for grasping of determined width (L1) and a fixing end (206) of width (L2) less than the width (L1) of the part for grasping, the fixing end (206) comprising two fixing lugs (206a) connected to the grasping part by a curve (206b), spaced apart from one another by a distance (e) equal to a thickness (e) of a blade (209) intended to be inserted between the fixing lugs (206a), and each comprising a through hole (206c) facing one another, for the passage, in the position of use, of a fixing pin (210), and a through-hole (206d), facing one another, for the passage, in the position of use, of a pivot pin (207) on side plates of the hollow body.
  10. Method for changing the blade according to either one of Claims 7 and 8 of a tool according to any one of Claims 1 to 6, comprising the following steps:
    f) taking hold of the tool (200) in one hand;
    g) with the other hand, taking hold of the fixing peg (210) that attaches the blade (209) and disengaging it from the blade (209) and from the rotary handle (205) ;
    h) extracting the blade (209) from the fixing part (206) of the rotary handle (205) by sliding it with respect to the pivot pin (207) in order to remove the blade from the handle without the need to detach the handle from the hollow body;
    i) inserting a new blade (209) according to either one of Claims 7 and 8 into the fixing part (206) of the rotary handle (205) while engaging the pivot pin (207) in the oblong slot (209d) until such point as the through-hole (209e) of the blade and the through-holes (206c) of the fixing end (206) of the rotary handle (205) are facing one another; and
    j) engaging the fixing peg (210) through the holes (206c-209e) in the fixing end (206) of the rotary handle (205) and in the blade (209) in order to fix the blade to the handle without the need to detach the handle from the hollow body.
EP16168434.5A 2015-05-11 2016-05-04 Cutting tool with removable blade and blade for such a tool Active EP3093111B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1554184A FR3036056B1 (en) 2015-05-11 2015-05-11 DETACHABLE BLADE CUTTING TOOL, BLADE AND BLADE CHANGING METHOD FOR SUCH A TOOL.

Publications (2)

Publication Number Publication Date
EP3093111A1 EP3093111A1 (en) 2016-11-16
EP3093111B1 true EP3093111B1 (en) 2019-11-06

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Application Number Title Priority Date Filing Date
EP16168434.5A Active EP3093111B1 (en) 2015-05-11 2016-05-04 Cutting tool with removable blade and blade for such a tool

Country Status (2)

Country Link
EP (1) EP3093111B1 (en)
FR (1) FR3036056B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109848475B (en) * 2018-10-23 2020-05-26 王紫文 Device and method for intercepting single small-diameter metal pin

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR844117A (en) * 1938-08-13 1939-07-19 Double-edged shears
DE20005232U1 (en) * 2000-03-20 2000-05-18 Lai, Mu Tung, Taichung Cutting tool
FR2914211B1 (en) * 2007-03-26 2009-08-21 Grehal Pierre Ets Cie Sa HAND TOOL FOR CUTTING A PLATE.

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Title
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Publication number Publication date
FR3036056B1 (en) 2017-11-24
EP3093111A1 (en) 2016-11-16
FR3036056A1 (en) 2016-11-18

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