EP2937179B1 - Device for sharpening a blade of a manual cutting tool - Google Patents

Device for sharpening a blade of a manual cutting tool Download PDF

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Publication number
EP2937179B1
EP2937179B1 EP15157450.6A EP15157450A EP2937179B1 EP 2937179 B1 EP2937179 B1 EP 2937179B1 EP 15157450 A EP15157450 A EP 15157450A EP 2937179 B1 EP2937179 B1 EP 2937179B1
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EP
European Patent Office
Prior art keywords
links
elastic
support
lever
levers
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EP15157450.6A
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German (de)
French (fr)
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EP2937179A1 (en
Inventor
René Dassaud
Quentin Dassaud
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Dassaud Fils SAS
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Dassaud Fils SAS
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Publication of EP2937179A1 publication Critical patent/EP2937179A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
    • B24D15/06—Hand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges
    • B24D15/08—Hand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges of knives; of razors
    • B24D15/081—Hand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges of knives; of razors with sharpening elements in interengaging or in mutual contact

Definitions

  • the invention relates to a sharpening device of a cutting blade hand tool.
  • cutting tool knives, sheets or scissors, professional or particular use.
  • Sharpening is the process of reforming, as needed, the wire of the sharp edge of a tool in order to maintain an optimal cutting quality.
  • devices comprising a support provided with a slot and sharpening members staggered on each side of the slot.
  • These sharpening members rotatably mounted about axes fixed to the support, are generally bent levers, one end of which comprises return members in position.
  • FR-A-2,867,098 describes such a device where each return member comprises a counterweight, formed by one end of each lever. Therefore, if we obtain a restoring force strong enough to offer resistance to the sharpening movement, the fact remains that such a device is bulky and heavy because of the counterweight, these being three in number. It follows that such a device is generally fixed, difficult to use as a mobile device or for manual use.
  • the invention intends to remedy more particularly by proposing a light device that can be used as a portable device and is easy to maintain.
  • the subject of the invention is a device for sharpening a blade of a hand-cutting tool, in particular a knife, comprising a support provided with a cut-out, three sharpening levers, rotatably mounted around of trees fixed to the support and staggered on either side of the cut, each lever being equipped with a return member in position, so as to define a sharpening zone variable according to the position of the blade of the tool between the levers, characterized in that the return members in position comprise elastic links each stretched between one end of a lever and the support.
  • the size and the weight of the device are reduced by means of the return members formed by elastic links.
  • Device 1 illustrated in Figures 1 to 4 , comprises a plate 2 made of metal insensitive to environmental conditions, preferably stainless steel.
  • This plate 2 is provided with a gripping member, in the form of a handle 3, perforated to reduce its weight, by means of a cutout 30.
  • the handle 3 is, as a variant, removably mounted on the plate 2.
  • the handle 3 is advantageously provided with an oblong hole 302 enabling it to be locked removably, for example by means of a padlock, on a fixed support, not illustrated, for example the edge of a worktop. this thanks to a known device.
  • the entire device 1 is made of stainless steel.
  • the plate 2 and / or the handle 3 may be of polymer.
  • the main part 4, flat, of the plate 2 is also perforated, in order to lighten the latter.
  • Such a shape of the cutout 5 facilitates and guides the blade of the when it is introduced into the cutout 5.
  • This edge 6 is oriented upwards in the configuration of use of the device 1.
  • the cutout 5 is aligned with a longitudinal axis A of the handle which is vertical in the configuration of use of the device 1.
  • a pin 33 Under the end 50 of the cutout 5, a pin 33, visible to figures 1 and 3 , forms a stop to the movement of the rods 70, 80, 90 when the blade of the knife, at the end of use of the device, is at the closed end 50 of the cutout 5.
  • 302 oblong drilling is adapted to receive the pin 33 when the device 1 is disassembled, thus facilitating its storage in a package.
  • the oblong hole 302 further makes it possible to fix the device 1 on a knife holder.
  • levers 7, 8, 9, more particularly visible at the figure 4 are mounted free in rotation on two shafts 10, 11 fixed in the vicinity of the upper portion 12 of the cutout 5, namely in the vicinity of the V-shaped portion 12 thereof.
  • These levers 7, 8, 9, made of stainless steel, comprise bent rods 70, 80, 90 and are placed opposite each other, staggered on either side of the V-shaped portion 12 of the blank 5 They thus define between them a sharpening zone 13 of a V-shaped knife blade whose dimensions are variable, according to the movement of the blade in the cutout 5.
  • the curved rods 70, 80, 90 of the levers 7, 8, 9 each receive on a sharpening edge 79, 89 or 99, a surface treatment giving them a high resistance to wear, for example by a treatment based on of chromium.
  • the edges 79, 89 and 99 of the bent rods 70, 80, 90 constitute the active part of the levers 7, 8, 9 for sharpening the cutting edge of a knife blade.
  • the levers 7, 8, 9 are fixed on the shafts 10, 11 by bolts 100, 110 inserted into holes provided at one end 71, 81, 91 of each arched rod 70, 80, 90. Beyond of this attachment zone, the end 71, 81, 91 of each lever 7, 8, 9 is configured in a flattened tab 72, 82, 92.
  • the levers 7, 8, 9 are easily removable. In practice, the levers 7, 8 and 9 are obtained by cutting a sheet metal plate. They are therefore rectangular in section, except at the edges 79, 89 and 99 which are rounded.
  • Each tab 72, 82, 92 is provided with at least one bore 73, 83, 93 which allows the passage of a return member in the position of the lever 7, 8, 9. In this case, it is a question of three elastic links 14, 15, 16 distributed between the levers 7, 8, 9 and the support 2.
  • the links 14, 15 and 16 are identical and have hereinafter described the link 14.
  • This is made of natural rubber, this material having the advantage of being compatible with use in the food industry and having properties Satisfactory elastics over the operating temperature range of the device 1.
  • the link 14 may be made of another elastomer, natural or synthetic.
  • the elastic link 14 may be formed by a spiral spring, metal or synthetic material.
  • the link 14 comprises two ends 140 and 141 which are each loop-shaped and which are held in this configuration by two metal sleeves 142 crimped around two strands of the link 14.
  • Link 14 is blue. This color can be obtained by dyeing the material constituting the link 14 or by applying a coating thereon or by using a colored sheath, for example polyester, arranged around the link. This blue color facilitates the identification of the link 14 because this color is not present in products generally treated in an agri-food workshop, whether these products are of plant or animal origin. Thus, in the event of breakage of the link 14 and in the unlikely event that part of this link falls on the product being prepared, the blue color of this part would decide with the color of the product, which would facilitate its identification. by an operator. Furthermore, the crimped sleeves 42 are detectable by a metal detection machine installed at the output of a preparation line of an agro-food product.
  • Each link 14, 15, 16 passes into a hole 73, 83 or 93 and has its ends 140, 141, 150, 151, 160, 161, loop-shaped, which are removably mounted around a pin 17 18, 15, 16 is stretched between a lever 7, 8, 9 and a pin 17, 18.
  • each pin 17, 18 is configured with a flange 172 or 182 to prevent slippage of the ends 140, 141, 150, 151, 160, 161 of the links 14, 15, 16. This ensures anchoring the links 14, 15, 16 to the pins 17, 18.
  • a pin 17 ensures the attachment of a first elastic link 14 and another pin 18, located opposite the pin 17 relative to the blank 5, ensures the fixing of the other two elastic links 15, 16.
  • the flattened end 72, 82, 92 of each lever 7, 8, 9 is provided with several holes similar to the holes 73, 83 and 93 and allowing attachment, at different points, of the links. 14, 15, 16. It is thus possible to modify the restoring force in position of the levers by modifying the bore in which a link 14, 15 or 16 passes and thus the length of the restoring arm of each elastic link 14, 15 , 16.
  • each pin 17, 18 on the plate 2 is adjustable, so as to vary the elongation of the elastic links and therefore the restoring force in position of the levers.
  • each pin 17, 18 or equivalent receives a single elastic link.
  • stops 19, 20 of steel are arranged, so as to ensure the stop of the movement of the levers 7, 8, 9 during the return to position of the levers 7, 8, 9 under the action of the elastic links 14, 15, 16.
  • These stops 19, 20 are advantageously surrounded each by a sleeve 23 of elastomer which allows to attenuate the noise when the levers are returned to their position.
  • this is not mandatory and the sleeves 23 can be omitted
  • the face 21 of the plate 2 equipped with elastic links 14, 15, 16 receives, on each side of the cutout 5, at least one protective grid which comprises two perforated parts 22, 23 removably fixed to the plate independently .
  • the parts 22, 23 can protect the elastic links 14, 15, 16 avoiding accidental cutting of the latter during use of the device 1, while allowing the cleaning of the device.
  • the parts 22, 23 of the protective grid can be connected by a bat fixed to the plate 2.
  • the protective grid is not mandatory and the device 1 can be used without this grid.
  • This movement induces a traction T, also directed upwards, on the elastic links 14, 15, 16.
  • This traction T is proportional to the sharpening force made by the user, that is to say to the force applied by the user during the movement of traction and support of the knife on the rods 70, 80, 90.
  • This traction T on the links 14, 15, 16 lasts as long as the user maintains his effort, that is to say in practice as long as the sharp edge of the knife is inserted between the levers 7, 8, 9. the traction movement is finished, that is to say when the rods 70, 80, 90 are in abutment against the pin 33, the knife emerges from the cut and the cutting edge thereof is no longer in position. contact with the levers 7, 8, 9.
  • the traction T exerted on the links 14, 15, 16 is released and the restoring force R exerted by each link 14, 15, 16 makes it possible to return the levers 7, 8, 9 by initial position, that is to say in the position where they define the minimum opening 12 of the V on either side of the cutout 5.
  • the length of the links 14, 15, 16 is adapted according to the starting position of the levers.
  • the device 1 is easily removable and cleanable because the parts 22, 23, the links 14, 15, 16 and the levers 7, 8, 9 are removable.
  • Each link 14, 15, 16 can be changed, either in case of wear, or to change its restoring force independently of other links.
  • the assembly of the various component parts of the device 1 is made with anti-loosening nuts.
  • links 14, 15 and 16 are identical and only the link 14 is described in detail below. It is provided, near each of its ends 140 and 141 shaped into a ball, a crimped metal sleeve 142. The link 14 extends, in practice, in single length between these two sleeves.
  • the links 14, 15, 16 are not arranged in double length between the levers 7, 8, 9 and the pins 17, 18 but in single length between the levers 7, 8, 9 and the stops 19 , 20.
  • each link 14, 15, 16 has one end 140, 150, 160, fixed on a lever 7, 8, 9 and the other end 141, 151, 161, fixed on one of the stops 19 or 20. These are provided with a rim similar to the edges 172 and 182 of the first embodiment to prevent the stall links.
  • the force to be applied on the levers during use of the device is less than in the first embodiment because the restoring force exerted by the links 14, 15, 16 is smaller since these links are in single length, while they are double length in the first embodiment.
  • the holes 73, 83 and 93 are opening towards the outside of the levers 7, 8 and 9 each through a slot 74, 84, 94.
  • These slots allow to quickly set up the links 14, 15 and 16 on the levers 7, 8 and 9, engaging their ends 140, 150 and 160 in the holes 73, 83 and 93 through these slots.
  • These slots each have a width less than the nominal diameter of the strand of each link 14, 15 and 16.
  • its end 140, 150 or 160 remains in place in the passage 73, 83 or 93, as long as it is not extracted from it by an operator who must then slightly force to constrain the strand of this elastic link through the slot 74, 84 or 94.
  • the return force by making, for the link or links concerned (s), a dead turn around the stop 19 or 20.
  • the restoring forces exerted on the levers 8 and 9 make it possible to form the wire of the cutting edge, respectively to the right and to the left while looking at the figure 3 .
  • links 14, 15 and 16 are also identical and hereinafter described only the link 14 in detail.
  • This comprises two rods or pins 144 and 145 which are respectively attached to the support 2 and the lever 9.
  • the rod or pin 144 comprises two ends 144A bent outwards, and a central portion 144B, folded more than 180 ° and which is arranged around the stop 19, itself fixed on the support 2
  • the rod 144 thus comprises two branches 144C which extend respectively between a curved end 144A and the central portion 144B.
  • the rod or staple 145 also comprises two bent ends 145A and a central portion 145B bent at approximately 180 ° and which passes through a passage 93 formed in the leg 92 of the lever 9. The portion 145B is engaged in the passage 93 through a slot 94, in an approach comparable to that mentioned for the end 140 of the second embodiment.
  • the rod or pin 145 also comprises two branches 145C parallel to each other and which extend respectively between the ends 145A and the central portion 145B.
  • the link 14 is thus stretched between the pieces 19 and 92.
  • the link 14 also comprises a spiral spring 146 mounted between the ends 144A and 145A of the rods or pins 145 and 144. More specifically, a portion of the branches 144C and 144B extends inside the spring 146, over the entire length of the this, so that the curved ends 145A and 145B respectively bear against opposite end turns 146A and 146B of the spring 146.
  • the tension T of the elastic element 14 increases and the ends 144A and 145A tend to come closer to each other and to compress the spring 146.
  • the stiffness of the elastic links 14, 15 and 16 can be adapted by selecting son of greater or lesser diameter to manufacture the springs 86 and the like.
  • the position of the stops 19 and 20 on the plate 2 can be variable, which makes it possible to adjust the tension of the links 14, 15 and 16.
  • the fastening of the links is not done on the stops 19, 20 but on other pins, placed below them, in the configuration of use of the device 1 with its vertical axis A.
  • the pins 17, 18 of the first embodiment, the stops 19 and 20 of the second and third embodiments or the pins placed below these stops and contemplated above are protruding members relative to the plate 2, members around which are anchored at least some of the ends of the elastic links 14, 15 and 16.

Description

L'invention a trait à un dispositif d'affilage d'une lame d'outil coupant à main.The invention relates to a sharpening device of a cutting blade hand tool.

Par outil coupant à main, on désigne ici des couteaux, des feuilles ou des ciseaux, à usage professionnel ou particulier.By hand cutting tool is meant knives, sheets or scissors, professional or particular use.

L'affilage consiste à reformer, autant que de besoin, le fil de l'arête tranchante d'un outil afin de maintenir une qualité de coupe optimale. Pour effectuer cette opération, notamment sur des couteaux utilisés par des professionnels dans le milieu agroalimentaire, on connaît des dispositifs comportant un support pourvu d'une fente et d'organes d'affilage placés en quinconce de chaque coté de la fente. Ces organes d'affilage, montés rotatif autour d'axes fixés au support, sont généralement des leviers coudés dont une extrémité comprend des organes de rappel en position.Sharpening is the process of reforming, as needed, the wire of the sharp edge of a tool in order to maintain an optimal cutting quality. To perform this operation, especially on knives used by professionals in the food industry, there are known devices comprising a support provided with a slot and sharpening members staggered on each side of the slot. These sharpening members, rotatably mounted about axes fixed to the support, are generally bent levers, one end of which comprises return members in position.

FR-A-2 867 098 décrit un tel dispositif où chaque organe de rappel comprend un contrepoids, formé par une extrémité de chaque levier. De ce fait, si l'on obtient une force de rappel suffisamment forte pour offrir une résistance au mouvement d'affilage, il n'en demeure pas moins qu'un tel dispositif est encombrant et lourd du fait des contrepoids, ceux-ci étant au nombre de trois. Il s'en suit qu'un tel dispositif est généralement fixe, difficilement utilisable en tant que dispositif mobile ou à usage manuel. FR-A-2,867,098 describes such a device where each return member comprises a counterweight, formed by one end of each lever. Therefore, if we obtain a restoring force strong enough to offer resistance to the sharpening movement, the fact remains that such a device is bulky and heavy because of the counterweight, these being three in number. It follows that such a device is generally fixed, difficult to use as a mobile device or for manual use.

Par US-A-5 478 272 on connait un dispositif d'affilage dans lequel les organes de rappel sont des ressorts à lame enroulés autour des extrémités des leviers qui sont fixées sur le support. US-A-2004/0014415 décrit un dispositif d'affilage dont les organes de rappel comprennent des barres de torsion. Ces différents dispositifs sont d'un entretien malaisé, le changement des organes de rappel étant compliqué.By US-A-5,478,272 a sharpening device is known in which the return members are leaf springs wound around the ends of the levers which are fixed on the support. US-2004/0014415 discloses a sharpening device whose return members comprise torsion bars. These different devices are difficult to maintain, the change of the return organs being complicated.

C'est à ces inconvénients qu'entend plus particulièrement remédier l'invention en proposant un dispositif léger, utilisable en tant que dispositif portatif et d'un entretien aisé.It is these drawbacks that the invention intends to remedy more particularly by proposing a light device that can be used as a portable device and is easy to maintain.

A cet effet, l'invention a pour objet un dispositif d'affilage d'une lame d'outil coupant à main, notamment d'un couteau, comportant un support pourvu d'une découpe, trois leviers d'affilage, montés rotatifs autour d'arbres fixés au support et placés en quinconce de part et d'autre de la découpe, chaque levier étant équipé d'un organe de rappel en position, de manière à définir une zone d'affilage variable selon la position de la lame de l'outil entre les leviers, caractérisé en ce que les organes de rappel en position comprennent des liens élastiques tendus chacun entre une extrémité d'un levier et le support.For this purpose, the subject of the invention is a device for sharpening a blade of a hand-cutting tool, in particular a knife, comprising a support provided with a cut-out, three sharpening levers, rotatably mounted around of trees fixed to the support and staggered on either side of the cut, each lever being equipped with a return member in position, so as to define a sharpening zone variable according to the position of the blade of the tool between the levers, characterized in that the return members in position comprise elastic links each stretched between one end of a lever and the support.

Grâce à l'invention, on diminue, au moyen des organes de rappel formés par des liens élastiques, l'encombrement et le poids de dispositif.Thanks to the invention, the size and the weight of the device are reduced by means of the return members formed by elastic links.

Selon des aspects avantageux mais non obligatoires de l'invention, un tel dispositif peut incorporer une ou plusieurs des caractéristiques suivantes :

  • Les liens élastiques sont montés de manière amovible sur le support et sur les leviers.
  • Les liens élastiques passent dans des perçages ménagés au voisinage d'une extrémité de chaque levier.
  • Les extrémités des liens élastiques sont configurées en boucle et montées de manière amovible sur des organes en saillie fixés au support, alors que les liens élastiques sont chacun tendus entre, d'une part, une partie d'un levier et, d'autre part, un organe en saillie.
  • Les perçages de passage des liens élastiques dans les leviers débouchent vers l'extérieur chacun par une fente et les liens sont chacun tendus en simple longueur entre un levier et un organe de saillie fixé au support.
  • Chaque lien élastique est tendu entre une partie d'un levier et le support, indépendamment des autres liens.
  • Les organes en saillie sont des butées d'arrêt du mouvement des leviers sous l'action des liens élastiques.
  • La force de rappel des liens élastiques est réglable par déplacement des organes en saillie sur le support.
  • La force de rappel des liens élastiques est réglable par changement des liens.
  • La force de rappel des liens élastiques est réglable en changeant les perçages dans lesquels passent les liens élastiques.
  • Chaque lien élastique comprend deux tiges respectivement accrochées à une partie d'un levier et au support, ainsi qu'un ressort interposé entre des extrémités des tiges.
  • Le ressort travaille en compression lorsque la tension de l'élément élastique auquel il appartient augmente.
  • Chaque tige est insérée à travers le ressort et présente au moins une extrémité recourbée, en appui contre une spire terminale du ressort.
  • Chaque tige présente deux extrémités recourbées en appui contre une spire terminale du ressort.
  • Chaque tige traverse le ressort sur toute sa longueur et les extrémités des deux tiges sont en appui sur deux spires d'extrémité opposées du ressort.
According to advantageous but non-mandatory aspects of the invention, such a device may incorporate one or more of the following features:
  • The elastic links are removably mounted on the support and on the levers.
  • The elastic links pass through holes in the vicinity of one end of each lever.
  • The ends of the elastic links are loosely configured and mounted removably on projecting members fixed to the support, while the elastic links are each stretched between, on the one hand, a part of a lever and on the other hand , a projecting organ.
  • The passage holes of the elastic links in the levers open outward each by a slot and the links are each stretched in single length between a lever and a protruding member fixed to the support.
  • Each elastic link is stretched between a part of a lever and the support, independently of the other links.
  • The protruding members are abutments for stopping the movement of the levers under the action of the elastic links.
  • The restoring force of the elastic links is adjustable by moving the projecting members on the support.
  • The restoring force of the elastic links is adjustable by changing the links.
  • The return force of the elastic links is adjustable by changing the holes through which the elastic links.
  • Each elastic link comprises two rods respectively attached to a portion of a lever and the support, and a spring interposed between the ends of the rods.
  • The spring works in compression when the tension of the elastic element to which it belongs increases.
  • Each rod is inserted through the spring and has at least one curved end, bearing against an end turn of the spring.
  • Each rod has two curved ends bearing against an end turn of the spring.
  • Each rod passes through the spring over its entire length and the ends of the two rods bear against two opposite end turns of the spring.

L'invention sera mieux comprise et d'autres avantages de celle-ci apparaîtront plus clairement à la lecture de la description qui va suivre de deux modes de réalisation d'un dispositif conforme à l'invention, donnée uniquement à titre d'exemple et faite en se référant aux dessins annexés dans lesquels :

  • la figure 1 est une vue de face d'un dispositif conforme à l'invention,
  • la figure 2 est une vue de dos, à la même échelle, du dispositif de la figure 1,
  • la figure 3 est une vue similaire à la figure 1, à la même échelle, une grille de protection n'étant pas représentée
  • la figure 4 est une vue partielle, en perspective, à plus grande échelle, de la partie principale du dispositif des figures 1 et 3
  • la figure 5 est une vue similaire à la figure 3 pour un dispositif conforme à un deuxième mode de réalisation de l'invention
  • la figure 6 est une vue similaire à la figure 3 pour un dispositif conforme à un troisième mode de réalisation de l'invention et
  • la figure 7 est une vue à plus grande échelle du détail VII à la figure 6.
The invention will be better understood and other advantages thereof will appear more clearly on reading the following description of two embodiments of a device according to the invention, given solely by way of example and made with reference to the accompanying drawings in which:
  • the figure 1 is a front view of a device according to the invention,
  • the figure 2 is a back view, on the same scale, of the device of the figure 1 ,
  • the figure 3 is a view similar to the figure 1 , on the same scale, a protective grid not being represented
  • the figure 4 is a partial view, in perspective, on a larger scale, of the main part of the device of the figures 1 and 3
  • the figure 5 is a view similar to the figure 3 for a device according to a second embodiment of the invention
  • the figure 6 is a view similar to the figure 3 for a device according to a third embodiment of the invention and
  • the figure 7 is a larger-scale view of detail VII to the figure 6 .

Le dispositif 1, illustré aux figures 1 à 4, comprend une platine 2 réalisée en métal insensible aux conditions environnementales, avantageusement en acier inoxydable.Device 1, illustrated in Figures 1 to 4 , comprises a plate 2 made of metal insensitive to environmental conditions, preferably stainless steel.

Cette platine 2 est pourvue d'un organe de préhension, en forme de poignée 3, ajourée pour en diminuer le poids, au moyen d'une découpe 30. La poignée 3 est, en variante, montée de manière amovible sur la platine 2. La poignée 3 est avantageusement pourvue d'un perçage oblong 302 permettant son blocage, de manière amovible, par exemple à l'aide d'un cadenas, sur un support fixe, non illustré, par exemple le bord d'un plan de travail, cela grâce à un dispositif connu en soi.This plate 2 is provided with a gripping member, in the form of a handle 3, perforated to reduce its weight, by means of a cutout 30. The handle 3 is, as a variant, removably mounted on the plate 2. The handle 3 is advantageously provided with an oblong hole 302 enabling it to be locked removably, for example by means of a padlock, on a fixed support, not illustrated, for example the edge of a worktop. this thanks to a known device.

En l'espèce, l'ensemble du dispositif 1 est réalisé en acier inoxydable. En variante, la platine 2 et/ou la poignée 3 peuvent être en polymère.In this case, the entire device 1 is made of stainless steel. Alternatively, the plate 2 and / or the handle 3 may be of polymer.

La partie principale 4, plate, de la platine 2 est également ajourée, afin d'alléger cette dernière. Une découpe centrale 5, dont la largeur est croissante en s'éloignant de la poignée 3, est réalisée à partir d'un bord 6 de la partie principale 4 du support 2. Une telle forme de la découpe 5 facilite et guide la lame du couteau lors de son introduction dans la découpe 5. Ce bord 6 est orienté vers le haut en configuration d'utilisation du dispositif 1. La découpe 5 est alignée avec un axe longitudinal A de la poignée qui est vertical en configuration d'utilisation du dispositif 1.The main part 4, flat, of the plate 2 is also perforated, in order to lighten the latter. A central cutout 5, whose width is increasing away from the handle 3, is made from an edge 6 of the main portion 4 of the support 2. Such a shape of the cutout 5 facilitates and guides the blade of the when it is introduced into the cutout 5. This edge 6 is oriented upwards in the configuration of use of the device 1. The cutout 5 is aligned with a longitudinal axis A of the handle which is vertical in the configuration of use of the device 1.

Sous l'extrémité 50 de la découpe 5, un pion 33, visible aux figures 1 et 3, forme une butée au mouvement des tiges 70, 80, 90 lorsque la lame du couteau, en fin d'utilisation du dispositif, est au niveau de l'extrémité fermée 50 de la découpe 5. Le perçage oblong 302 est propre à recevoir le pion 33 lorsque le dispositif 1 est démonté, facilitant ainsi son rangement dans un emballage. Le perçage oblong 302 permet en outre de fixer le dispositif 1 sur un porte-couteaux.Under the end 50 of the cutout 5, a pin 33, visible to figures 1 and 3 , forms a stop to the movement of the rods 70, 80, 90 when the blade of the knife, at the end of use of the device, is at the closed end 50 of the cutout 5. 302 oblong drilling is adapted to receive the pin 33 when the device 1 is disassembled, thus facilitating its storage in a package. The oblong hole 302 further makes it possible to fix the device 1 on a knife holder.

Trois leviers 7, 8, 9, plus particulièrement visibles à la figure 4, sont montés libres en rotation sur deux arbres 10, 11 fixés au voisinage de la partie supérieure 12 de la découpe 5, à savoir au voisinage de la partie 12 en V de celle-ci. Ces leviers 7, 8, 9, en acier inoxydable, comprennent des tiges cintrées 70, 80, 90 et ils sont placés en regard les uns des autres, en quinconce de part et d'autre de la partie 12 en V de la découpe 5. Ils définissent ainsi entre eux une zone d'affilage 13 d'une lame de couteau, en forme de V, dont les dimensions sont variables, en fonction du mouvement de la lame dans la découpe 5.Three levers 7, 8, 9, more particularly visible at the figure 4 , are mounted free in rotation on two shafts 10, 11 fixed in the vicinity of the upper portion 12 of the cutout 5, namely in the vicinity of the V-shaped portion 12 thereof. These levers 7, 8, 9, made of stainless steel, comprise bent rods 70, 80, 90 and are placed opposite each other, staggered on either side of the V-shaped portion 12 of the blank 5 They thus define between them a sharpening zone 13 of a V-shaped knife blade whose dimensions are variable, according to the movement of the blade in the cutout 5.

Les tiges cintrées 70, 80, 90 des leviers 7, 8, 9 reçoivent chacune sur un bord d'affilage 79, 89 ou 99, un traitement de surface leur conférant une résistance élevée à l'usure, par exemple par un traitement à base de chrome. En d'autres termes, les bords 79, 89 et 99 des tiges cintrées 70, 80, 90 constituent la partie active des leviers 7, 8, 9 permettant l'affilage de l'arête tranchante d'une lame de couteau.The curved rods 70, 80, 90 of the levers 7, 8, 9 each receive on a sharpening edge 79, 89 or 99, a surface treatment giving them a high resistance to wear, for example by a treatment based on of chromium. In other words, the edges 79, 89 and 99 of the bent rods 70, 80, 90 constitute the active part of the levers 7, 8, 9 for sharpening the cutting edge of a knife blade.

Les leviers 7, 8, 9 sont fixés sur les arbres 10, 11 par des boulons 100, 110 insérés dans des perçages ménagés au niveau d'une extrémité 71, 81, 91 de chaque tige cintrée 70, 80, 90. Au-delà de cette zone de fixation, l'extrémité 71, 81, 91 de chaque levier 7, 8, 9 est configurée en une patte aplatie 72, 82, 92. Les leviers 7, 8, 9 sont aisément démontables. En pratique, les leviers 7, 8 et 9 sont obtenus par découpage d'une plaque de tôle. Ils sont donc à section rectangulaire, sauf au niveau des bords 79, 89 et 99 qui sont arrondis.The levers 7, 8, 9 are fixed on the shafts 10, 11 by bolts 100, 110 inserted into holes provided at one end 71, 81, 91 of each arched rod 70, 80, 90. Beyond of this attachment zone, the end 71, 81, 91 of each lever 7, 8, 9 is configured in a flattened tab 72, 82, 92. The levers 7, 8, 9 are easily removable. In practice, the levers 7, 8 and 9 are obtained by cutting a sheet metal plate. They are therefore rectangular in section, except at the edges 79, 89 and 99 which are rounded.

Chaque patte 72, 82, 92 est munie d'au moins un perçage 73, 83, 93 qui permet le passage d'un organe de rappel en position du levier 7, 8, 9. En l'occurrence, il s'agit de trois liens élastiques 14, 15, 16 répartis entre les leviers 7, 8, 9 et le support 2.Each tab 72, 82, 92 is provided with at least one bore 73, 83, 93 which allows the passage of a return member in the position of the lever 7, 8, 9. In this case, it is a question of three elastic links 14, 15, 16 distributed between the levers 7, 8, 9 and the support 2.

Les liens 14, 15 et 16 sont identiques et ont décrit ci-après le lien 14. Celui-ci est réalisé en caoutchouc naturel, ce matériau présentant l'avantage d'être compatible avec une utilisation dans le domaine agroalimentaire et de présenter des propriétés élastiques satisfaisantes sur la plage de température d'utilisation du dispositif 1. En variante, le lien 14 peut être réalisé dans un autre élastomère, naturel ou synthétique. Selon une autre variante, le lien élastique 14 peut être formé par un ressort spiral, métallique ou en matériau synthétique.The links 14, 15 and 16 are identical and have hereinafter described the link 14. This is made of natural rubber, this material having the advantage of being compatible with use in the food industry and having properties Satisfactory elastics over the operating temperature range of the device 1. Alternatively, the link 14 may be made of another elastomer, natural or synthetic. According to another variant, the elastic link 14 may be formed by a spiral spring, metal or synthetic material.

Le lien 14 comprend deux extrémités 140 et 141 qui sont chacune conformées en boucle et qui sont maintenues dans cette configuration grâce à deux manchons métalliques 142 sertis autour de deux brins du lien 14.The link 14 comprises two ends 140 and 141 which are each loop-shaped and which are held in this configuration by two metal sleeves 142 crimped around two strands of the link 14.

Le lien 14 est de couleur bleue. Cette couleur peut être obtenue en teintant le matériau constitutif du lien 14 ou en appliquant un revêtement sur celui-ci ou en utilisant une gaine colorée, par exemple en polyester, disposée autour du lien. Cette couleur bleue facilite le repérage du lien 14 car cette couleur n'est pas présente dans les produits généralement traités dans un atelier agroalimentaire, que ces produits soient d'origine végétale ou animale. Ainsi, en cas de rupture du lien 14 et dans le cas peu probable où une partie de ce lien viendrait à tomber dans le produit en cours de préparation, la couleur bleue de cette partie trancherait avec la couleur du produit, ce qui faciliterait son repérage par un opérateur. Par ailleurs, les manchons sertis 42 sont repérables par une machine de détection de métaux installée en sortie d'une ligne de préparation d'un produit agroalimentaire.Link 14 is blue. This color can be obtained by dyeing the material constituting the link 14 or by applying a coating thereon or by using a colored sheath, for example polyester, arranged around the link. This blue color facilitates the identification of the link 14 because this color is not present in products generally treated in an agri-food workshop, whether these products are of plant or animal origin. Thus, in the event of breakage of the link 14 and in the unlikely event that part of this link falls on the product being prepared, the blue color of this part would decide with the color of the product, which would facilitate its identification. by an operator. Furthermore, the crimped sleeves 42 are detectable by a metal detection machine installed at the output of a preparation line of an agro-food product.

La situation est identique en ce qui concerne les liens 15 et 16.The situation is the same with regard to links 15 and 16.

Chaque lien 14, 15, 16 passe dans un perçage 73, 83 ou 93 et a ses extrémités 140, 141, 150, 151, 160, 161, configurées en boucle, qui sont montées, de manière amovible, autour d'un pion 17, 18 fixé sur la platine 2. Ainsi, chaque lien 14, 15, 16 est tendu entre un levier 7, 8, 9 et un pion 17, 18.Each link 14, 15, 16 passes into a hole 73, 83 or 93 and has its ends 140, 141, 150, 151, 160, 161, loop-shaped, which are removably mounted around a pin 17 18, 15, 16 is stretched between a lever 7, 8, 9 and a pin 17, 18.

Avantageusement, l'extrémité libre de chaque pion 17, 18 est configurée avec un rebord 172 ou 182 permettant d'éviter tout glissement des extrémités 140, 141, 150, 151, 160, 161 des liens 14, 15, 16. On assure ainsi l'ancrage des liens 14, 15, 16 sur les pions 17, 18.Advantageously, the free end of each pin 17, 18 is configured with a flange 172 or 182 to prevent slippage of the ends 140, 141, 150, 151, 160, 161 of the links 14, 15, 16. This ensures anchoring the links 14, 15, 16 to the pins 17, 18.

En l'espèce, compte tenu de la disposition des leviers 7, 8, 9, un pion 17 assure la fixation d'un premier lien élastique 14 et un autre pion 18, situé en face du pion 17 par rapport à la découpe 5, assure la fixation des deux autres liens élastiques 15, 16.In this case, given the arrangement of the levers 7, 8, 9, a pin 17 ensures the attachment of a first elastic link 14 and another pin 18, located opposite the pin 17 relative to the blank 5, ensures the fixing of the other two elastic links 15, 16.

Dans un mode de réalisation non illustré, l'extrémité aplatie 72, 82, 92 de chaque levier 7, 8, 9 est pourvue de plusieurs perçages analogues aux perçages 73, 83 et 93 et permettant l'accrochage, en différents points, des liens 14, 15, 16. On peut ainsi modifier la force de rappel en position des leviers en modifiant le perçage dans lequel passe un lien 14, 15 ou 16 et, ainsi, la longueur du bras de rappel, de chaque lien élastique 14, 15, 16.In a non-illustrated embodiment, the flattened end 72, 82, 92 of each lever 7, 8, 9 is provided with several holes similar to the holes 73, 83 and 93 and allowing attachment, at different points, of the links. 14, 15, 16. It is thus possible to modify the restoring force in position of the levers by modifying the bore in which a link 14, 15 or 16 passes and thus the length of the restoring arm of each elastic link 14, 15 , 16.

Dans un mode de réalisation non illustré, la position de chaque pion 17, 18 sur la platine 2 est réglable, de manière à faire varier l'allongement des liens élastiques et donc la force de rappel en position des leviers.In a non-illustrated embodiment, the position of each pin 17, 18 on the plate 2 is adjustable, so as to vary the elongation of the elastic links and therefore the restoring force in position of the levers.

En variante non illustrée, chaque pion 17, 18 ou équivalent reçoit un seul lien élastique.As a variant not illustrated, each pin 17, 18 or equivalent receives a single elastic link.

Entre les perçages 73, 83, 93 des leviers 7, 8, 9 et les pions 17, 18, on réalise une boucle formant un organe de rappel élastique à double brin ou à double longueur. Le montage amovible des liens 14, 15, 16 sur les pions 17 et 18 permet de changer aisément ceux-ci, par exemple pour modifier la force de rappel en position des leviers.Between the holes 73, 83, 93 of the levers 7, 8, 9 and the pins 17, 18, a loop is formed forming a double-stranded or double-length elastic return member. Removable mounting of the links 14, 15, 16 on the pins 17 and 18 makes it easy to change these, for example to change the restoring force in the position of the levers.

Sur la platine 2, en dessous de chaque pion 17, 18, lorsque le dispositif 1 est en configuration d'utilisation avec son axe A vertical, deux butées 19, 20 en acier sont disposées, de manière à assurer l'arrêt du mouvement des leviers 7, 8, 9 lors du retour en position des leviers 7, 8, 9 sous l'action des liens élastiques 14, 15, 16. Ces butées 19, 20 sont avantageusement entourées chacune d'un manchon 23 en élastomère qui permet d'atténuer le bruit lors du retour en position des leviers. Ceci n'est toutefois pas obligatoire et les manchons 23 peuvent être omisOn the plate 2, below each pin 17, 18, when the device 1 is in use configuration with its vertical axis A, two stops 19, 20 of steel are arranged, so as to ensure the stop of the movement of the levers 7, 8, 9 during the return to position of the levers 7, 8, 9 under the action of the elastic links 14, 15, 16. These stops 19, 20 are advantageously surrounded each by a sleeve 23 of elastomer which allows to attenuate the noise when the levers are returned to their position. However, this is not mandatory and the sleeves 23 can be omitted

Une fois montés entre les leviers 7, 8 et 9 et les pions 17 et 18, les liens sont toujours en tension et ils peuvent exercer un effort élastique de rappel des leviers 7, 8, 9, à tout moment, quelle que soit la position des leviers 7, 8, 9.Once mounted between the levers 7, 8 and 9 and the pins 17 and 18, the links are always in tension and they can exert an elastic force of levers levers 7, 8, 9, at any time, regardless of the position levers 7, 8, 9.

La face 21 de la platine 2 équipée des liens élastiques 14, 15, 16 reçoit, de chaque côté de la découpe 5, au moins une grille de protection qui comprend deux parties ajourées 22, 23 fixées de façon amovible sur la platine de manière indépendante. Les parties 22, 23 permettent de protéger les liens élastiques 14, 15, 16 en évitant toute coupure accidentelle de ces derniers lors de l'utilisation du dispositif 1, cela tout en permettant le nettoyage du dispositif. En variante, les parties 22, 23 de la grille de protection peuvent être reliées par une batte fixée sur la platine 2. La grille de protection n'est pas obligatoire et le dispositif 1 peut être utilisé sans cette grille.The face 21 of the plate 2 equipped with elastic links 14, 15, 16 receives, on each side of the cutout 5, at least one protective grid which comprises two perforated parts 22, 23 removably fixed to the plate independently . The parts 22, 23 can protect the elastic links 14, 15, 16 avoiding accidental cutting of the latter during use of the device 1, while allowing the cleaning of the device. Alternatively, the parts 22, 23 of the protective grid can be connected by a bat fixed to the plate 2. The protective grid is not mandatory and the device 1 can be used without this grid.

Lorsqu'on insère la lame, non représentée, d'un couteau, à affiler, dans la découpe 5, l'arête tranchante de la lame est orientée vers l'extrémité 50 de la découpe 5. La lame est ainsi située entre les tiges cintrées 70, 80, 90 dans la partie 12 en V. On effectue ensuite un mouvement de rappel vers soi, c'est-à-dire un mouvement de traction et d'appui du couteau, orienté selon la flèche F1 en configuration d'utilisation.When inserting the blade, not shown, a knife, to sharpen, in the cutout 5, the cutting edge of the blade is oriented towards the end 50 of the cutout 5. The blade is thus located between the rods bent 70, 80, 90 in the V-12 part. Then a return-to-the-move movement is effected, that is to say a traction and support movement of the knife, oriented according to the arrow F 1 in the configuration of FIG. 'use.

Ce mouvement induit une modification de la forme et des dimensions de la zone d'affilage 13 par rotation des leviers 7, 8, 9 autour de leurs arbres respectifs 10, 11 selon les flèches F'2 et F2. Lors de ce mouvement de rotation, la patte 72, 82, 92 de chaque levier 7, 8, 9, reliée à un lien élastique 14, 15, 16, effectue un mouvement orienté vers le haut et globalement en arc de cercle, en configuration d'utilisation, selon les flèches F'3 et F3 à la figure 3.This movement induces a modification of the shape and dimensions of the sharpening area 13 by rotation of the levers 7, 8, 9 about their respective shafts 10, 11 according to the arrow F '2 and F 2. During this rotational movement, the tab 72, 82, 92 of each lever 7, 8, 9, connected to an elastic link 14, 15, 16, makes a movement oriented upward and generally in a circular arc, in configuration of use, according to the arrows F ' 3 and F 3 at the figure 3 .

Ce mouvement induit une traction T, également orientée vers le haut, sur les liens élastiques 14, 15, 16. Cette traction T est proportionnelle à l'effort d'affilage effectué par l'utilisateur, c'est-à-dire à la force appliquée par l'utilisateur lors du mouvement de traction et d'appui du couteau sur les tiges 70, 80, 90.This movement induces a traction T, also directed upwards, on the elastic links 14, 15, 16. This traction T is proportional to the sharpening force made by the user, that is to say to the force applied by the user during the movement of traction and support of the knife on the rods 70, 80, 90.

Cette traction T sur les liens 14, 15, 16 dure tant que l'utilisateur maintient son effort, c'est-à-dire en pratique tant que l'arête tranchante du couteau est insérée entre les leviers 7, 8, 9. Lorsque le mouvement de traction est fini, c'est-à-dire lorsque les tiges 70, 80, 90 sont en butée contre le pion 33, le couteau se dégage de la découpe et l'arête tranchante de celui ci n'est plus en contact avec les leviers 7, 8, 9. La traction T exercée sur les liens 14, 15, 16 est relâchée et la force de rappel R exercée par chaque lien 14, 15, 16 permet de ramener les leviers 7, 8, 9 en position initiale, c'est-à-dire dans la position où ils définissent l'ouverture minimale 12 du V de part et d'autre de la découpe 5.This traction T on the links 14, 15, 16 lasts as long as the user maintains his effort, that is to say in practice as long as the sharp edge of the knife is inserted between the levers 7, 8, 9. the traction movement is finished, that is to say when the rods 70, 80, 90 are in abutment against the pin 33, the knife emerges from the cut and the cutting edge thereof is no longer in position. contact with the levers 7, 8, 9. The traction T exerted on the links 14, 15, 16 is released and the restoring force R exerted by each link 14, 15, 16 makes it possible to return the levers 7, 8, 9 by initial position, that is to say in the position where they define the minimum opening 12 of the V on either side of the cutout 5.

La longueur des liens 14, 15, 16 est adaptée en fonction de la position de départ des leviers.The length of the links 14, 15, 16 is adapted according to the starting position of the levers.

Le dispositif 1 est aisément démontable et nettoyable du fait que les parties 22, 23, les liens 14, 15, 16 et les leviers 7, 8, 9 sont démontables.The device 1 is easily removable and cleanable because the parts 22, 23, the links 14, 15, 16 and the levers 7, 8, 9 are removable.

Chaque lien 14, 15, 16 peut être changé, soit en cas d'usure, soit pour modifier sa force de rappel indépendamment des autres liens.Each link 14, 15, 16 can be changed, either in case of wear, or to change its restoring force independently of other links.

Avantageusement, le montage des différentes pièces constitutives du dispositif 1 est réalisé avec des écrous anti desserrage.Advantageously, the assembly of the various component parts of the device 1 is made with anti-loosening nuts.

Dans les deuxième et troisième modes de réalisation de l'invention représentés aux figures 5 à 7, les éléments analogues à ceux du premier mode de réalisation portent les mêmes références. Les dispositifs 1 de ces modes de réalisation fonctionnent globalement de la même façon que celui du premier mode de réalisation. Dans ce qui suit, on mentionne principalement ce qui distingue ces modes de réalisation du précédent.In the second and third embodiments of the invention shown in Figures 5 to 7 elements similar to those of the first embodiment bear the same references. The devices 1 of these embodiments generally operate in the same manner as that of the first embodiment. In what follows, we mainly mention what distinguishes these embodiments from the previous one.

Dans le mode de réalisation de la figure 5, les liens 14, 15 et 16 sont identiques et on décrit ci-après uniquement le lien 14 en détail. Celui-ci est pourvu, à proximité de chacune de ses extrémités 140 et 141 conformées en boule, d'un manchon métallique serti 142. Le lien 14 s'étend, en pratique, en simple longueur, entre ces deux manchons.In the embodiment of the figure 5 links 14, 15 and 16 are identical and only the link 14 is described in detail below. It is provided, near each of its ends 140 and 141 shaped into a ball, a crimped metal sleeve 142. The link 14 extends, in practice, in single length between these two sleeves.

Dans ce mode de réalisation, les liens 14, 15, 16 ne sont pas disposés en double longueur entre les leviers 7, 8, 9 et les pions 17, 18 mais en simple longueur entre les leviers 7, 8, 9 et les butées 19, 20. En d'autres termes, chaque lien 14, 15, 16 a une extrémité 140, 150, 160, fixée sur un levier 7, 8, 9 et l'autre extrémité 141, 151, 161, fixée sur une des butées 19 ou 20. Celles-ci sont pourvues d'un rebord analogue aux rebords 172 et 182 du premier mode de réalisation permettant d'éviter le décrochage des liens. Dans ce mode de réalisation, la force à appliquer sur les leviers lors de l'utilisation du dispositif est moindre que dans le premier mode de réalisation car la force de rappel exercée par les liens 14, 15, 16 est plus faible puisque ces liens sont en simple longueur, alors qu'ils sont en double longueur dans le premier mode de réalisation.In this embodiment, the links 14, 15, 16 are not arranged in double length between the levers 7, 8, 9 and the pins 17, 18 but in single length between the levers 7, 8, 9 and the stops 19 , 20. In other words, each link 14, 15, 16 has one end 140, 150, 160, fixed on a lever 7, 8, 9 and the other end 141, 151, 161, fixed on one of the stops 19 or 20. These are provided with a rim similar to the edges 172 and 182 of the first embodiment to prevent the stall links. In this embodiment, the force to be applied on the levers during use of the device is less than in the first embodiment because the restoring force exerted by the links 14, 15, 16 is smaller since these links are in single length, while they are double length in the first embodiment.

On remarque à la figure 5 que les perçages 73, 83 et 93 sont débouchants vers l'extérieur des leviers 7, 8 et 9 chacun à travers une fente 74, 84, 94. Ces fentes permettent de mettre en place rapidement les liens 14, 15 et 16 sur les leviers 7, 8 et 9, en engageant leurs extrémités 140, 150 et 160 dans les perçages 73, 83 et 93 à travers ces fentes. Ces fentes ont chacune une largeur inférieure au diamètre nominal du brin de chaque lien 14, 15 et 16. Ainsi, en cas de rupture de l'un de ces liens, son extrémité 140, 150 ou 160 demeure en place dans le passage 73, 83 ou 93, tant qu'elle n'est pas extraite de celui-ci par un opérateur qui doit alors légèrement forcer pour contraindre le brin de ce lien élastique à traverser la fente 74, 84 ou 94. D'autre part, l'autre extrémité 141, 151 ou 161 d'un lien 14, 15 ou 16 éventuellement rompu reste en place sur la butée 19 ou 20, du fait que celle-ci est équipée d'un rebord analogue au rebord 172 et 182 du premier mode de réalisation, comme expliqué ci-dessus.We notice at the figure 5 that the holes 73, 83 and 93 are opening towards the outside of the levers 7, 8 and 9 each through a slot 74, 84, 94. These slots allow to quickly set up the links 14, 15 and 16 on the levers 7, 8 and 9, engaging their ends 140, 150 and 160 in the holes 73, 83 and 93 through these slots. These slots each have a width less than the nominal diameter of the strand of each link 14, 15 and 16. Thus, in case of breakage of one of these links, its end 140, 150 or 160 remains in place in the passage 73, 83 or 93, as long as it is not extracted from it by an operator who must then slightly force to constrain the strand of this elastic link through the slot 74, 84 or 94. On the other hand, the another end 141, 151 or 161 of a link 14, 15 or 16 possibly broken remains in place on the abutment 19 or 20, because it is equipped with a flange similar to the flange 172 and 182 of the first embodiment. realization, as explained above.

Avantageusement, dans ce mode de réalisation, on peut aisément régler, pour chaque lien 14, 15, 16 la force de rappel en faisant, pour le ou les liens concerné(s), un tour mort autour de la butée 19 ou 20. En particulier, on peut faire un tour mort des liens 14, 16, situés le plus près de la platine, et pas de tour mort pour le lien 15 situé le plus près de l'utilisateur. Dans ce cas, les forces de rappel exercées sur les leviers 8 et 9 permettent de former le fil du tranchant, respectivement vers la droite et vers la gauche en regardant la figure 3. Le levier 7, du fait de la force de rappel moindre qu'il subit, permet de redresser le fil de l'arête tranchante.Advantageously, in this embodiment, it is easy to adjust, for each link 14, 15, 16 the return force by making, for the link or links concerned (s), a dead turn around the stop 19 or 20. In In particular, there can be a dead turn of the links 14, 16, located closest to the plate, and no dead turn for the link 15 located closest to the user. In this case, the restoring forces exerted on the levers 8 and 9 make it possible to form the wire of the cutting edge, respectively to the right and to the left while looking at the figure 3 . The lever 7, because of the lower return force it undergoes, straighten the wire of the cutting edge.

Dans le mode de réalisation des figures 6 et 7, les liens 14, 15 et 16 sont également identiques et on décrit ci-après uniquement le lien 14 en détail. Celui-ci comprend deux tiges ou épingles 144 et 145 qui sont respectivement accrochées au support 2 et au levier 9.In the embodiment of figures 6 and 7 links 14, 15 and 16 are also identical and hereinafter described only the link 14 in detail. This comprises two rods or pins 144 and 145 which are respectively attached to the support 2 and the lever 9.

Plus précisément, la tige ou épingle 144 comprend deux extrémités 144A recourbées vers l'extérieur, ainsi qu'une partie centrale 144B, pliée à plus de 180° et qui est disposée autour de la butée 19, elle-même fixée sur le support 2. La tige 144 comprend donc deux branches 144C qui s'étendent respectivement entre une extrémité recourbée 144A et la partie centrale 144B.More specifically, the rod or pin 144 comprises two ends 144A bent outwards, and a central portion 144B, folded more than 180 ° and which is arranged around the stop 19, itself fixed on the support 2 The rod 144 thus comprises two branches 144C which extend respectively between a curved end 144A and the central portion 144B.

La tige ou agrafe 145 comprend également deux extrémités recourbées 145A et une partie centrale 145B pliée à 180° environ et qui traverse un passage 93 ménagé dans la patte 92 du levier 9. La partie 145B est engagée dans le passage 93 à travers une fente 94, selon une approche comparable à celle mentionnée pour l'extrémité 140 du deuxième mode de réalisation. La tige ou épingle 145 comprend également deux branches 145C parallèles entre elles et qui s'étendent respectivement entre les extrémités 145A et la partie centrale 145B.The rod or staple 145 also comprises two bent ends 145A and a central portion 145B bent at approximately 180 ° and which passes through a passage 93 formed in the leg 92 of the lever 9. The portion 145B is engaged in the passage 93 through a slot 94, in an approach comparable to that mentioned for the end 140 of the second embodiment. The rod or pin 145 also comprises two branches 145C parallel to each other and which extend respectively between the ends 145A and the central portion 145B.

Le lien 14 est ainsi tendu entre les pièces 19 et 92.The link 14 is thus stretched between the pieces 19 and 92.

Le lien 14 comprend également un ressort spiral 146 monté entre les extrémités 144A et 145A des tiges ou épingles 145 et 144. Plus précisément, une partie des branches 144C et 144B s'étend à l'intérieur du ressort 146, sur toute la longueur de celui-ci, de sorte que les extrémités recourbées 145A et 145B viennent respectivement en appui contre des spires terminales opposées 146A et 146B du ressort 146. Ainsi, en cas d'effort sur le levier 90 tendant à le faire basculer dans le sens de la flèche F'3, la tension T de l'élément élastique 14 augmente et les extrémités 144A et 145A ont tendance à se rapprocher les unes des autres et à comprimer entre elles le ressort 146.The link 14 also comprises a spiral spring 146 mounted between the ends 144A and 145A of the rods or pins 145 and 144. More specifically, a portion of the branches 144C and 144B extends inside the spring 146, over the entire length of the this, so that the curved ends 145A and 145B respectively bear against opposite end turns 146A and 146B of the spring 146. Thus, in the event of effort on the lever 90 tending to tilt in the direction of the F'3 arrow, the tension T of the elastic element 14 increases and the ends 144A and 145A tend to come closer to each other and to compress the spring 146.

A la figure 6, les liens 15 et 16 sont superposés et le lien 15, qui est tendu entre la butée 20 et un passage 73 ménagé dans la partie 72 du levier 7, masque le lien 16, lui-même tendu entre la butée 20 et un passage 83 ménagé dans une patte du levier 8 qui n'est pas visible sur cette figure 6.To the figure 6 the links 15 and 16 are superimposed and the link 15, which is stretched between the stop 20 and a passage 73 formed in the portion 72 of the lever 7, masks the link 16, itself stretched between the stop 20 and a passage 83 formed in a leg of the lever 8 which is not visible on this figure 6 .

Dans ce cas, la raideur des liens élastiques 14, 15 et 16 peut être adaptée en sélectionnant des fils de diamètre plus ou moins gros pour fabriquer les ressorts 86 et équivalents.In this case, the stiffness of the elastic links 14, 15 and 16 can be adapted by selecting son of greater or lesser diameter to manufacture the springs 86 and the like.

Selon un aspect non représenté de l'invention applicable aux deuxième et troisième modes de réalisation, la position des butées 19 et 20 sur la platine 2 peut être variable, ce qui permet d'ajuster la tension des liens 14, 15 et 16.According to an unrepresented aspect of the invention applicable to the second and third embodiments, the position of the stops 19 and 20 on the plate 2 can be variable, which makes it possible to adjust the tension of the links 14, 15 and 16.

En variante, la fixation des liens ne se fait pas sur les butées 19, 20 mais sur d'autres pions, placés en dessous de celles-ci, en configuration d'utilisation du dispositif 1 avec son axe A vertical.In a variant, the fastening of the links is not done on the stops 19, 20 but on other pins, placed below them, in the configuration of use of the device 1 with its vertical axis A.

Quel que soit le mode de réalisation, les pions 17, 18 du premier mode de réalisation, les butées 19 et 20 des deuxième et troisième modes de réalisation ou les pions placés en dessous de ces butées et envisagés ci-dessus constituent des organes en saillie par rapport à la platine 2, organes autour desquels sont ancrées certaines au moins des extrémités des liens élastiques 14, 15 et 16.Whatever the embodiment, the pins 17, 18 of the first embodiment, the stops 19 and 20 of the second and third embodiments or the pins placed below these stops and contemplated above are protruding members relative to the plate 2, members around which are anchored at least some of the ends of the elastic links 14, 15 and 16.

Les caractéristiques techniques des modes de réalisation et variantes envisagées ci-dessus peuvent être combinées pour générer de nouveaux modes de réalisation de l'invention.The technical features of the embodiments and alternatives contemplated above may be combined to generate new embodiments of the invention.

Claims (15)

  1. Device (1) for sharpening a blade of a manual cutting tool, in particular a knife, having a support (2) provided with a slot (5), three sharpening levers (7, 8, 9) mounted to be rotatable around shafts (10, 11) secured to the support (2) and placed in staggered arrangement on either side of the slot (5), wherein each lever (7, 8, 9) is equipped with a position-restoring element (14, 15, 16) in order to define a variable sharpening zone (13) according to the position of the blade of the tool between the levers, characterised in that the position-restoring elements comprise elastic links (14, 15, 16) each braced between a part (72, 82, 92) of a lever (7, 8, 9) and the support (2).
  2. Device according to claim 1, characterised in that the elastic links (14, 15, 16) are mounted to be removable on the support (2) and on the levers (7, 8, 9).
  3. Device according to one of the preceding claims, characterised in that the elastic links (14, 15, 16) pass into drilled holes (73, 83, 93) arranged in the vicinity of an end (72, 82, 92) of each lever (7, 8, 9).
  4. Device according to one of the preceding claims, characterised in that the ends (140, 141, 150, 151, 160, 161) of the elastic links (14, 15, 16) are configured in a loop and removably mounted on projecting elements (17, 18; 19, 20) secured to the support (2), and in that the elastic links are each braced between a part (72, 82, 92) of a lever (7, 8, 9), on one side, and a projecting element, on the other.
  5. Device according to claims 3 and 4, characterised in that the drilled holes (73, 83, 93) for passage of the elastic links (14, 15, 16) in the levers each open to the outside through a slit (74, 84, 94) and the links are each braced in a single length between a lever and a projecting element (17, 18; 19, 20) secured to the support (2).
  6. Device according to one of claims 4 or 5, characterised in that each elastic link (14, 15, 16) is braced independently of the others between a part (72, 82, 92) of a lever (7, 8, 9) and the support (2).
  7. Device according to one of claims 4 to 6, characterised in that the projecting elements are stop elements (19, 20) for the movement of the levers (7, 8, 9) under the action of the elastic links (14, 15, 16).
  8. Device according to one of claims 4 to 7, characterised in that the restoring force (R) of the elastic links (14, 15, 16) is adjustable by displacement of the projecting elements (17, 18; 19, 20) on the support (2).
  9. Device according to one of the preceding claims, characterised in that the restoring force (R) of the elastic links (14, 15, 16) is adjustable by changing the links.
  10. Device according to claim 3, characterised in that each lever (7, 8, 9) comprises several drilled holes (73, 83, 93) for passage of an elastic link, and in that the restoring force (R) of the elastic links (14, 15, 16) is adjustable by changing the drilled holes (73, 83, 93), into which the elastic links pass.
  11. Device according to one of the preceding claims, characterised in that each elastic link (14, 15, 16) comprises two rods (144, 145) respectively hooked onto a part (72, 82, 92) of a lever (7, 8, 9) and onto the support (2) as well as a spring (146) interposed between ends (144A, 145A) of the rods.
  12. Device according to claim 11, characterised in that the spring (146) works under compression when the tension (T) of the elastic element (14, 15, 16) to which it belongs increases.
  13. Device according to one of claims 11 or 12, characterised in that each rod (144, 145) is inserted through the spring (146) and has at least one curved end (144A, 145A) abutting against an end turn (146A, 146B) of the spring.
  14. Device according to claim 13, characterised in that each rod (144, 145) has two curved ends (144A, 145A) abutting against an end turn (146A, 146B) of the spring (146).
  15. Device according to one of claims 13 or 14, characterised in that each rod (144, 145) passes through the spring (146) over its entire length, and in that the ends (144A, 145A) of the two rods abut against two opposing end turns (146A, 146B) of the spring.
EP15157450.6A 2014-04-23 2015-03-03 Device for sharpening a blade of a manual cutting tool Active EP2937179B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1453641A FR3020299B1 (en) 2014-04-23 2014-04-23 DEVICE FOR AFFILING A TOOL BLADE OF A CUTTING TOOL

Publications (2)

Publication Number Publication Date
EP2937179A1 EP2937179A1 (en) 2015-10-28
EP2937179B1 true EP2937179B1 (en) 2017-05-10

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Application Number Title Priority Date Filing Date
EP15157450.6A Active EP2937179B1 (en) 2014-04-23 2015-03-03 Device for sharpening a blade of a manual cutting tool

Country Status (2)

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EP (1) EP2937179B1 (en)
FR (1) FR3020299B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3102379B1 (en) 2019-10-24 2021-11-26 Joffrey Beaujouan DEVICE FOR TEACHING THE THREADING OF A BLADE OF A CUTTING TOOL AND CORRESPONDING KIT
US20230321783A1 (en) * 2022-04-11 2023-10-12 Hantover, Inc. Handheld blade steel

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5478272A (en) 1994-07-07 1995-12-26 Cozzini, Inc. Blade sharpening apparatus
DE10052439C1 (en) 2000-10-23 2001-10-31 Alois Spreitz Knife sharpening device with two crossed sharpening rods has ceramic rods and arc-shaped guides either side of slot
US20070101826A1 (en) * 2002-11-12 2007-05-10 Southern Mechanical & Structural, Inc. Knife sharpener
FR2867098B1 (en) * 2004-03-04 2006-05-05 Dassaud Fils Sa DEVICE FOR SHARPENING TOOL BLADE OF CUTTING TOOL
FR2884746B1 (en) * 2005-04-26 2008-12-19 Fischer Castet Soc Par Actions DEVICE FOR AFFILIATING A BLADE SHARPENER

Also Published As

Publication number Publication date
FR3020299B1 (en) 2016-05-20
FR3020299A1 (en) 2015-10-30
EP2937179A1 (en) 2015-10-28

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