EP2937179A1 - Device for sharpening a blade of a manual cutting tool - Google Patents
Device for sharpening a blade of a manual cutting tool Download PDFInfo
- Publication number
- EP2937179A1 EP2937179A1 EP15157450.6A EP15157450A EP2937179A1 EP 2937179 A1 EP2937179 A1 EP 2937179A1 EP 15157450 A EP15157450 A EP 15157450A EP 2937179 A1 EP2937179 A1 EP 2937179A1
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- EP
- European Patent Office
- Prior art keywords
- links
- support
- elastic
- lever
- levers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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- 229910001220 stainless steel Inorganic materials 0.000 description 3
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- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
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- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
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- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
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- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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Images
Classifications
-
- 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 modification of the shape and dimensions of the sharpening zone 13 by rotation of the levers 7, 8, 9 around their respective shafts 10, 11 according to the arrows F ' 2 and F 2 .
- 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 .
- 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 disengages 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.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Food-Manufacturing Devices (AREA)
- Knives (AREA)
Abstract
Dispositif d'affilage d'une lame d'outil coupant à main, notamment d'un couteau, comportant un support (2) pourvu d'une découpe (5), trois leviers d'affilage (7, 8, 9), montés rotatifs autour d'arbres fixés au support (2) et placés en quinconce de part et d'autre de la découpe (5), chaque levier (7, 8, 9) étant équipé d'un organe de rappel en position (14, 15, 16), de manière à définir une zone d'affilage (13) variable selon la position de la lame d'un outil entre les leviers, caractérisé en ce que les organes de rappel en position comprennent des liens élastiques (14, 15, 16) tendus chacun entre une partie (72, 82, 92) d'un levier (7, 8, 9) et le support (2). Sharpening device for a cutting blade of a hand-cutting tool, in particular a knife, comprising a support (2) provided with a cut-out (5), three sharpening levers (7, 8, 9), mounted rotating around shafts fixed to the support (2) and staggered on either side of the cutout (5), each lever (7, 8, 9) being equipped with a return member in position (14, 15, 16), so as to define a sharpening zone (13) variable according to the position of the blade of a tool between the levers, characterized in that the return members in position comprise elastic links (14, 15). , 16) each extending between a portion (72, 82, 92) of a lever (7, 8, 9) and the support (2).
Description
L'invention a trait Ă un dispositif d'affilage d'une lame d'outil coupant Ă 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 Ă reformer, autant que de besoin, le fil de l'arĂªte tranchante d'un outil afin de maintenir une qualitĂ© de coupe optimale. Pour effectuer cette opĂ©ration, notamment sur des couteaux utilisĂ©s par des professionnels dans le milieu agroalimentaire, on connaĂ®t des dispositifs comportant un support pourvu d'une fente et d'organes d'affilage placĂ©s en quinconce de chaque cotĂ© de la fente. Ces organes d'affilage, montĂ©s rotatif autour d'axes fixĂ©s au support, sont gĂ©nĂ©ralement des leviers coudĂ©s dont une extrĂ©mitĂ© 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.
Par
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.
GrĂ¢ce Ă l'invention, on diminue, au moyen des organes de rappel formĂ©s par des liens Ă©lastiques, 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 butĂ©es d'arrĂªt du mouvement des leviers sous l'action des liens Ă©lastiques.
- 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.
- 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 Ă l'invention, - la
figure 2 est une vue de dos, Ă la mĂªme Ă©chelle, du dispositif de lafigure 1 , - la
figure 3 est une vue similaire Ă lafigure 1 , Ă la mĂªme Ă©chelle, une grille de protection n'Ă©tant pas reprĂ©sentĂ©e - la
figure 4 est une vue partielle, en perspective, Ă plus grande Ă©chelle, de la partie principale du dispositif desfigures 1 et3 - la
figure 5 est une vue similaire à lafigure 3 pour un dispositif conforme à un deuxième mode de réalisation de l'invention - la
figure 6 est une vue similaire à lafigure 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 lafigure 6 .
- 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 thefigure 1 , - the
figure 3 is a view similar to thefigure 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 thefigures 1 and3 - the
figure 5 is a view similar to thefigure 3 for a device according to a second embodiment of the invention - the
figure 6 is a view similar to thefigure 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 thefigure 6 .
Le dispositif 1, illustré aux
Cette platine 2 est pourvue d'un organe de prĂ©hension, en forme de poignĂ©e 3, ajourĂ©e pour en diminuer le poids, au moyen d'une dĂ©coupe 30. La poignĂ©e 3 est, en variante, montĂ©e de manière amovible sur la platine 2. La poignĂ©e 3 est avantageusement pourvue d'un perçage oblong 302 permettant son blocage, de manière amovible, par exemple Ă l'aide d'un cadenas, sur un support fixe, non illustrĂ©, par exemple le bord d'un plan de travail, cela grĂ¢ce Ă un dispositif connu en soi.This
En l'espèce, l'ensemble du dispositif 1 est rĂ©alisĂ© en acier inoxydable. En variante, la platine 2 et/ou la poignĂ©e 3 peuvent Ăªtre en polymère.In this case, the entire device 1 is made of stainless steel. Alternatively, the
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
Sous l'extrémité 50 de la découpe 5, un pion 33, visible aux
Trois leviers 7, 8, 9, plus particulièrement visibles à la
Les tiges cintrĂ©es 70, 80, 90 des leviers 7, 8, 9 reçoivent chacune sur un bord d'affilage 79, 89 ou 99, un traitement de surface leur confĂ©rant une rĂ©sistance Ă©levĂ©e Ă l'usure, par exemple par un traitement Ă base de chrome. En d'autres termes, les bords 79, 89 et 99 des tiges cintrĂ©es 70, 80, 90 constituent la partie active des leviers 7, 8, 9 permettant l'affilage de l'arĂªte tranchante d'une lame de couteau.The
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
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
Les liens 14, 15 et 16 sont identiques et ont dĂ©crit ci-après le lien 14. Celui-ci est rĂ©alisĂ© en caoutchouc naturel, ce matĂ©riau prĂ©sentant l'avantage d'Ăªtre compatible avec une utilisation dans le domaine agroalimentaire et de prĂ©senter des propriĂ©tĂ©s Ă©lastiques satisfaisantes sur la plage de tempĂ©rature d'utilisation du dispositif 1. En variante, le lien 14 peut Ăªtre rĂ©alisĂ© dans un autre Ă©lastomère, naturel ou synthĂ©tique. Selon une autre variante, le lien Ă©lastique 14 peut Ăªtre formĂ© par un ressort spiral, mĂ©tallique ou en matĂ©riau synthĂ©tique.The
Le lien 14 comprend deux extrĂ©mitĂ©s 140 et 141 qui sont chacune conformĂ©es en boucle et qui sont maintenues dans cette configuration grĂ¢ce Ă deux manchons mĂ©talliques 142 sertis autour de deux brins du lien 14.The
Le lien 14 est de couleur bleue. Cette couleur peut Ăªtre obtenue en teintant le matĂ©riau constitutif du lien 14 ou en appliquant un revĂªtement sur celui-ci ou en utilisant une gaine colorĂ©e, par exemple en polyester, disposĂ©e autour du lien. Cette couleur bleue facilite le repĂ©rage du lien 14 car cette couleur n'est pas prĂ©sente dans les produits gĂ©nĂ©ralement traitĂ©s dans un atelier agroalimentaire, que ces produits soient d'origine vĂ©gĂ©tale ou animale. Ainsi, en cas de rupture du lien 14 et dans le cas peu probable oĂ¹ une partie de ce lien viendrait Ă tomber dans le produit en cours de prĂ©paration, la couleur bleue de cette partie trancherait avec la couleur du produit, ce qui faciliterait son repĂ©rage par un opĂ©rateur. Par ailleurs, les manchons sertis 42 sont repĂ©rables par une machine de dĂ©tection de mĂ©taux installĂ©e en sortie d'une ligne de prĂ©paration d'un produit agroalimentaire.
La situation est identique en ce qui concerne les liens 15 et 16.The situation is the same with regard to
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
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
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
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
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
En variante non illustrée, chaque pion 17, 18 ou équivalent reçoit un seul lien élastique.As a variant not illustrated, each
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
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 butĂ©es 19, 20 en acier sont disposĂ©es, de manière Ă assurer l'arrĂªt du mouvement des leviers 7, 8, 9 lors du retour en position des leviers 7, 8, 9 sous l'action des liens Ă©lastiques 14, 15, 16. Ces butĂ©es 19, 20 sont avantageusement entourĂ©es chacune d'un manchon 23 en Ă©lastomère qui permet d'attĂ©nuer le bruit lors du retour en position des leviers. Ceci n'est toutefois pas obligatoire et les manchons 23 peuvent Ăªtre omisOn the
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
La face 21 de la platine 2 Ă©quipĂ©e des liens Ă©lastiques 14, 15, 16 reçoit, de chaque cĂ´tĂ© de la dĂ©coupe 5, au moins une grille de protection qui comprend deux parties ajourĂ©es 22, 23 fixĂ©es de façon amovible sur la platine de manière indĂ©pendante. Les parties 22, 23 permettent de protĂ©ger les liens Ă©lastiques 14, 15, 16 en Ă©vitant 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 Ăªtre reliĂ©es par une batte fixĂ©e sur la platine 2. La grille de protection n'est pas obligatoire et le dispositif 1 peut Ăªtre utilisĂ© sans cette grille.The
Lorsqu'on insère la lame, non reprĂ©sentĂ©e, d'un couteau, Ă affiler, dans la dĂ©coupe 5, l'arĂªte tranchante de la lame est orientĂ©e vers l'extrĂ©mitĂ© 50 de la dĂ©coupe 5. La lame est ainsi situĂ©e entre les tiges cintrĂ©es 70, 80, 90 dans la partie 12 en V. On effectue ensuite un mouvement de rappel vers soi, c'est-Ă -dire un mouvement de traction et d'appui du couteau, orientĂ© selon la flèche F1 en configuration d'utilisation.When inserting the blade, not shown, a knife, to sharpen, in the
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
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
Cette traction T sur les liens 14, 15, 16 dure tant que l'utilisateur maintient son effort, c'est-Ă -dire en pratique tant que l'arĂªte tranchante du couteau est insĂ©rĂ©e entre les leviers 7, 8, 9. Lorsque le mouvement de traction est fini, c'est-Ă -dire lorsque les tiges 70, 80, 90 sont en butĂ©e contre le pion 33, le couteau se dĂ©gage de la dĂ©coupe et l'arĂªte tranchante de celui ci n'est plus en contact avec les leviers 7, 8, 9. La traction T exercĂ©e sur les liens 14, 15, 16 est relĂ¢chĂ©e et la force de rappel R exercĂ©e par chaque lien 14, 15, 16 permet de ramener les leviers 7, 8, 9 en position initiale, c'est-Ă -dire dans la position oĂ¹ ils dĂ©finissent l'ouverture minimale 12 du V de part et d'autre de la dĂ©coupe 5.This traction T on the
La longueur des liens 14, 15, 16 est adaptée en fonction de la position de départ des leviers.The length of the
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
Chaque lien 14, 15, 16 peut Ăªtre changĂ©, soit en cas d'usure, soit pour modifier sa force de rappel indĂ©pendamment des autres liens.Each
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
Dans le mode de réalisation de la
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
On remarque Ă la
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
Dans le mode de réalisation des
Plus prĂ©cisĂ©ment, la tige ou Ă©pingle 144 comprend deux extrĂ©mitĂ©s 144A recourbĂ©es vers l'extĂ©rieur, ainsi qu'une partie centrale 144B, pliĂ©e Ă plus de 180° et qui est disposĂ©e autour de la butĂ©e 19, elle-mĂªme fixĂ©e sur le support 2. La tige 144 comprend donc deux branches 144C qui s'Ă©tendent respectivement entre une extrĂ©mitĂ© recourbĂ©e 144A et la partie centrale 144B.More specifically, the rod or
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
Le lien 14 est ainsi tendu entre les pièces 19 et 92.The
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
A la
Dans ce cas, la raideur des liens Ă©lastiques 14, 15 et 16 peut Ăªtre adaptĂ©e en sĂ©lectionnant des fils de diamètre plus ou moins gros pour fabriquer les ressorts 86 et Ă©quivalents.In this case, the stiffness of the
Selon un aspect non reprĂ©sentĂ© de l'invention applicable aux deuxième et troisième modes de rĂ©alisation, la position des butĂ©es 19 et 20 sur la platine 2 peut Ăªtre 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
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
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
Les caractĂ©ristiques techniques des modes de rĂ©alisation et variantes envisagĂ©es ci-dessus peuvent Ăªtre combinĂ©es pour gĂ©nĂ©rer de nouveaux modes de rĂ©alisation 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)
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 true EP2937179A1 (en) | 2015-10-28 |
EP2937179B1 EP2937179B1 (en) | 2017-05-10 |
Family
ID=50841860
Family Applications (1)
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)
Country | Link |
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EP (1) | EP2937179B1 (en) |
FR (1) | FR3020299B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4260981A1 (en) * | 2022-04-11 | 2023-10-18 | Hantover, Inc. | Tool for steeling a knife |
Families Citing this family (1)
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 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5478272A (en) | 1994-07-07 | 1995-12-26 | Cozzini, Inc. | Blade sharpening apparatus |
US20040014415A1 (en) | 2000-10-23 | 2004-01-22 | Harald Stallegger | Knife-sharpening machine |
FR2867098A1 (en) | 2004-03-04 | 2005-09-09 | Dassaud Fils Sa | Blade sharpening device for e.g. meat packing industry, has levers rotatably mounted at junction zone between arms around geometrical axis and exerting force on blade in identical and progressive manner when blade is moved on cut of support |
EP1716975A1 (en) * | 2005-04-26 | 2006-11-02 | Etablissements Fischer Castet | Device for sharpening blade edges |
US20070101826A1 (en) * | 2002-11-12 | 2007-05-10 | Southern Mechanical & Structural, Inc. | Knife sharpener |
-
2014
- 2014-04-23 FR FR1453641A patent/FR3020299B1/en not_active Expired - Fee Related
-
2015
- 2015-03-03 EP EP15157450.6A patent/EP2937179B1/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5478272A (en) | 1994-07-07 | 1995-12-26 | Cozzini, Inc. | Blade sharpening apparatus |
US20040014415A1 (en) | 2000-10-23 | 2004-01-22 | Harald Stallegger | Knife-sharpening machine |
US20070101826A1 (en) * | 2002-11-12 | 2007-05-10 | Southern Mechanical & Structural, Inc. | Knife sharpener |
FR2867098A1 (en) | 2004-03-04 | 2005-09-09 | Dassaud Fils Sa | Blade sharpening device for e.g. meat packing industry, has levers rotatably mounted at junction zone between arms around geometrical axis and exerting force on blade in identical and progressive manner when blade is moved on cut of support |
EP1716975A1 (en) * | 2005-04-26 | 2006-11-02 | Etablissements Fischer Castet | Device for sharpening blade edges |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4260981A1 (en) * | 2022-04-11 | 2023-10-18 | Hantover, Inc. | Tool for steeling a knife |
Also Published As
Publication number | Publication date |
---|---|
FR3020299A1 (en) | 2015-10-30 |
EP2937179B1 (en) | 2017-05-10 |
FR3020299B1 (en) | 2016-05-20 |
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