EP1273399A1 - Cutting device with retractable blade - Google Patents

Cutting device with retractable blade Download PDF

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Publication number
EP1273399A1
EP1273399A1 EP02362012A EP02362012A EP1273399A1 EP 1273399 A1 EP1273399 A1 EP 1273399A1 EP 02362012 A EP02362012 A EP 02362012A EP 02362012 A EP02362012 A EP 02362012A EP 1273399 A1 EP1273399 A1 EP 1273399A1
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EP
European Patent Office
Prior art keywords
blade
support means
handle
cutting device
branches
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
Application number
EP02362012A
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German (de)
French (fr)
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EP1273399B1 (en
Inventor
Tremblay Gérard
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Mure et Peyrot SAS
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Mure et Peyrot SAS
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Publication date
Application filed by Mure et Peyrot SAS filed Critical Mure et Peyrot SAS
Publication of EP1273399A1 publication Critical patent/EP1273399A1/en
Application granted granted Critical
Publication of EP1273399B1 publication Critical patent/EP1273399B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B5/00—Hand knives with one or more detachable blades
    • B26B5/001—Hand knives with one or more detachable blades with blades being slid out of handle immediately prior to use
    • B26B5/003—Hand knives with one or more detachable blades with blades being slid out of handle immediately prior to use comprising retraction means for the blade or the blade holder

Definitions

  • the present invention relates to a cutting device with a retractable blade. comprising a blade and a handle in which it is likely to be retract.
  • Cutting devices with retractable blade comprising a blade sliding in a slide handle are well known.
  • instruments of this type called cutter, allow to cut the paper, the cardboard or any other material generally in the form of sheets or plates.
  • the blades used in these devices are very sharp to ensure efficient cutting and they are generally interchangeable to keep a fully operational instrument. So these instruments are relatively dangerous and many accidents occur during use. Usually, the user must exert a strong pressure on the neck of the instrument and print it a quick move to obtain a clean cut of the material to be cut. So when the blade contact with material ceases, user must also cease to move the said instrument with as much energy as is necessary for cutting. However, accidents generally occur when the contact of the blade with the material ceases and that carried away in its momentum, the user carries the instrument against him.
  • a problem which arises and which the present invention aims to solve is then to make a cutting device with a retractable blade or the blade retracts into the handle before the clumsy user wears the device against him or any other person.
  • a blade cutting device retractable comprising: blade support means, having means forming a drive stop, capable of sliding along the axis said handle between a first rest position where the blade is retracted and a first working position where the blade is extended outside said handle, said support means being, in said first position of work, likely to be brought from a second rest position to a second working position, spaced from the axis of said handle, passing through a second intermediate position; first elastic return means capable of holding said blade support means in said first rest position; controllable displacement means mounted on said handle, capable of cooperating with said means supports and to bear against said means forming a stop drive to drive said blade supports of said first rest position towards said first working position; support means capable of receiving said blade support means in said second working position to block them in translation; and the blade drive by means of said handle against a surface to be cut causes said support means in said second working position and causes the disengagement of said controllable displacement means engaged in said means forming a drive stop so that said means elastic return
  • a characteristic of the cutting device resides in the mode of cooperation of the blade support means with the means controllable movement and with the support means, allowing simultaneously blocking the blade support means in translation in the second working position and disengagement of the means of movement controllable engaged in the means forming a drive stop.
  • the support means release the blade support means which, driven by the elastic return means return to the first rest position in which the blade is fully retracted into the handle. Thanks to that characteristic, the user of the device cannot be injured since the blade is shrinks when it leaves the surface to be cut.
  • said support means for blade having an upper part and a lower part, extend longitudinally and has a first end in which the blade is maintained in the extension of said blade support means, a intermediate part comprising said means forming a drive stop and a second guide end of said support means.
  • the blade support means are capable of being guided in translation in the handle along their longitudinal axis between the rest position and the working position with controllable displacement means which apply in the middle part.
  • the means forming a drive stop are consisting of two lug-shaped means arranged on the lateral faces of said intermediate part in its lower part, opposite one another and whose bearing surface is substantially perpendicular to said means supports.
  • the lug means constitute stopping points perpendicular to the longitudinal axis of the blade support means against which the controllable displacement means are supported when are controlled in translation.
  • said displacement means controllable have a first part projecting out of the handle to order them, and a second part dividing into two branches symmetrical facing each other, likely to overlap said part at least in said intermediate portion and said first extremity, the branches being capable of bearing on the surfaces support means forming lug.
  • the second part of the displacement means controllable must necessarily allow the passage of the first end of the blade support means and a fortiori of the blade so that they retract under the effect of elastic means when the means of movement are kept in the working position.
  • said branches of said second part of said controllable displacement means are inclined one with respect to each other and with respect to a plane of symmetry which separates them, and the walls lateral of said upper part of said intermediate part constitute areas of friction against which the branches are likely to apply to deviate from each other when said support means of blade are driven towards said controllable displacement means, and disengage from said lug means.
  • the second part of controllable displacement means forms a flared fork, the inner wall of the branches, at least in their middle position, comes in support against the upper side walls of the intermediate part.
  • the ends of the branches may be engaged in the drive stop means located in the lower part of the intermediate part, when the blade support means are in the first working position.
  • the second part of said means controllable displacement between the branches of which said part upper of said intermediate part is likely to be engaged constitutes said support means capable of blocking said means blade supports in said second working position. So when the blade is applied against the surface to be cut and the displacement means controllable are kept in their working position, the walls upper side of the intermediate part are embedded between the fork branches and spread them apart, but they also allow, as will be explained in more detail in the following description, the blocking in translation of the blade support means with respect to the means controllable travel.
  • said first elastic return means are constituted by a helical spring, which drives the blade support means in the rest position when they are free from the fork.
  • the device also comprises second elastic return means capable of maintaining said means of movement controllable in a rest position.
  • the blade support means and the controllable means of movement are likely to be obtained by molding.
  • Figure 1 illustrates a cutting device according to the invention in a resting state. It consists of a handle 10 and a retracted blade 12 in the sleeve 10.
  • the blade 12 is mounted at the end 14 of means blade supports 16 or blade holder, which extend longitudinally according to their axis A.
  • the blade holder 16 is capable of sliding inside the handle 10 along its longitudinal axis A to bring out the blade 12 to the open end 18 of the handle 10 and it is held in a first rest position, as illustrated in FIG. 1, by a helical spring 19.
  • the blade holder 16 has an intermediate portion 20 and a second guide end 22, allowing both guiding in translation of the blade holder 16 and the maintenance of the blade 12 relative to the handle 10.
  • the handle has a longitudinal housing 24, oriented towards the open end 18 of the handle 10, into which the blade holder 16 so as to guide it in translation.
  • the cutting device comprises displacement means controllable 26, presenting a first part 28, or cursor, making protrusion out of the handle 10 and a second part 30 dividing in two symmetrical branches which will be detailed in the following description and which overlaps the upper part 32 of the blade holder 16 to extend up to look at the lower part 34 of the blade holder 16.
  • the second part 30 is located opposite the intermediate part of the blade holder 16.
  • the lower part 34 of the door blade 16 has, in the intermediate part 20, means forming a stop 36 which will also be detailed in the following description.
  • controllable displacement means are shown on the Figure 1, in their rest position and they are likely to be moved parallel to the handle 10 on which they are mounted and substantially parallel to the longitudinal axis A of the blade holder 16. Furthermore, they are held in their rest position by a helical spring 38.
  • controllable displacement means 26 comprising the first part 28 forming a cursor, capable of being driven by the fingers of the hand and the second part 30 dividing into two symmetrical branches 30 a and 30 b with respect to a plane P and facing each other. It is understood that the first part 28 is located outside of the handle 10 and that the second part 30 is inserted into the handle 10.
  • the branches 30 a and 30 b each have an end 39 and a middle portion 40 and 42 inclined relative to each other and relative to the plane P which separates them, so that the second part 30 forms a fork substantially flared.
  • the branches 30 a and 30 b are elastically movable relative to each other perpendicular to the plane P and more particularly, they are capable of being spaced from one another and of returning to their initial position. when the constraint ceases. This characteristic is obtained by producing the controllable displacement means 26 made of plastic, for example polyamide.
  • the controllable displacement means 26 cooperate with the blade support means 16 or blade holder, which can be found illustrated in perspective in FIG. 6 and which will now be described in more detail.
  • the first end, devoid of blade, is extended by the intermediate part 20, itself extended by the second guide end 22.
  • the intermediate part 20 comprises the means forming drive stop 36, located in the lower part 34 of the side wall of the blade holder 16. Obviously, means forming an identical drive stop 36 are located symmetrically on the opposite side wall.
  • FIG 6A a detail view from below, illustrates the means forming a drive stop 36 integral with the intermediate portion 20 which itself is extended by the first end 14.
  • the stop means 36 constitute a lug the bearing face 44 is substantially perpendicular to the longitudinal axis A of the blade support 16.
  • the lug 36 is located against the lateral face of the intermediate part 20 near the edge that the first end 14 extends. In this way, the intermediate part 20 has a lateral support face 46, against which the branch 30b of the second part 30 of the controllable displacement means is capable of being applied.
  • FIG. 6 also shows the second end 22, which extends the intermediate part, with a profile of type "IPE" so as to stiffen and facilitate guidance.
  • the side walls of said part upper 32 of said intermediate portion 20 are slightly truncated so as to form inclined surfaces 48 symmetrical with respect to the plane T, on each side of the blade holder 16. These inclined surfaces 48 constitute friction zones against which the branches are likely to apply as explained in the following description with reference in Figures 7A and 7B.
  • the inclined surfaces 48 are entrained against the internal walls of the inclined median portions 40 and 42, and slides while rubbing against them while spreading the branches 30 a and 30 b since the width of the intermediate part 20 is constant and that fork formed by the branches 30 a and 30 b is flared.
  • the end 38 of the branches 30 a and 30 b comes off the lateral support faces 46 so that the edges of the ends 39 disengage from the support faces 44 of the lugs 36 and the translational locking of the blade holder 16 relative to the controllable displacement means 26 is no longer ensured by the cooperation of the lugs 36 and the edges of the end 39 of the branches 30 a and 30 b .
  • the blade holder 16 is locked in translation by the branches 30a and 30b, the inner wall of middle portions 40, 42 blocks by friction the intermediate part 20 and therefore, the longitudinal movement of the blade holder 16.
  • Figure 1 illustrates the cutting device according to the invention at rest.
  • the blade holder 16 is located in a first rest position corresponding to a position in which the blade 12 is retracted. In this position, the controllable displacement means 26 are also in a rest position. And the position of the second part 30 of the controllable displacement means 26 relative to the blade holder 16, is that which is shown in FIG. 7A.
  • the ends 39 of the branches 30 a and 30 b are then in abutment against the lateral bearing faces 46 and their edge is opposite the bearing surfaces 44 of the pins 36.
  • This first working position corresponds to a second position of rest, and only in a second working position illustrated on the Figure 3 in which the blade 12 is applied against the surface to be cut that the actual cutting takes place.
  • the internal wall of the middle portions 40, 42 blocks by friction the intermediate part 20 and therefore, the longitudinal movement of the blade holder 16.
  • the blade holder 16 is released in translation by the edges of the ends 39 which cooperate with the lugs and locked in translation by the inclined median portions 40 and 42 of the branches 30 a and 30 b .
  • This second working position is maintained as long as the blade 12 is held against the surface to be cut, and the cursor 28 is held in position.
  • the blade support 16 is no longer forcibly moved against the internal wall of the middle portions 40, 42, and it moves from the second position working towards a second intermediate position due to the approximation of the branches 30 a and 30 b from one to the other.
  • the middle portions 40, 42 no longer block in translation the blade support 16 and the pins 36 do not engage in the branches 30 a and 30 b .
  • the blade support is driven in the first rest position, as shown in Figure 4.
  • the slider 28 is held in position , the blade is retracted.
  • the blade support means have fork means and the controllable displacement means have a part capable of cooperating with said fork means, and in particular they comprise means forming a lug.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Cutting Devices (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Knives (AREA)
  • Surgical Instruments (AREA)

Abstract

The device comprises supports (16) for the blade (12) having a stop (36) able to slide along the axis of the handle (10). There is first return spring (19) and a controllable displacement means (26) mounted on the handle able to engage the supports and be supported against the stop in order to drive the blade supports from a rest position to the first working position. There support means able to receive the blade supports in a second working position in order to translationally lock them.

Description

La présente invention concerne un dispositif de coupe à lame rétractable comportant une lame et un manche dans lequel elle est susceptible de se rétracter.The present invention relates to a cutting device with a retractable blade. comprising a blade and a handle in which it is likely to be retract.

Des dispositifs de coupe à lame rétractable comportant une lame coulissant dans un manche à glissière sont bien connus. Par exemple des instruments de ce type appelés cutter, permettent de couper le papier, le carton ou tout autre matériau généralement sous forme de feuilles ou de plaques.Cutting devices with retractable blade comprising a blade sliding in a slide handle are well known. For example instruments of this type called cutter, allow to cut the paper, the cardboard or any other material generally in the form of sheets or plates.

Les lames utilisées dans ces dispositifs sont très aiguisées pour assurer une coupe efficace et elles sont généralement interchangeables afin de conserver un instrument parfaitement opérationnel. Ainsi, ces instruments sont relativement dangereux et de nombreux accidents interviennent pendant l'utilisation. De façon habituelle, l'utilisateur doit exercer une forte pression sur le manche de l'instrument et lui imprimer un déplacement rapide pour obtenir une coupe franche du matériau à découper. De la sorte lorsque le contact de la lame avec le matériau cesse, l'utilisateur doit également cesser de déplacer ledit instrument avec autant d'énergie que celle qui est nécessaire pour la découpe. Or généralement, les accidents interviennent lorsque le contact de la lame avec le matériau cesse et qu'emporté dans son élan, l'utilisateur porte l'instrument contre lui.The blades used in these devices are very sharp to ensure efficient cutting and they are generally interchangeable to keep a fully operational instrument. So these instruments are relatively dangerous and many accidents occur during use. Usually, the user must exert a strong pressure on the neck of the instrument and print it a quick move to obtain a clean cut of the material to be cut. So when the blade contact with material ceases, user must also cease to move the said instrument with as much energy as is necessary for cutting. However, accidents generally occur when the contact of the blade with the material ceases and that carried away in its momentum, the user carries the instrument against him.

Un problème qui se pose et que vise à résoudre la présente invention est alors de réaliser un dispositif de coupe à lame rétractable ou la lame se rétracte dans le manche avant que l'utilisateur maladroit ne porte le dispositif contre lui ou contre tout autre personne.A problem which arises and which the present invention aims to solve is then to make a cutting device with a retractable blade or the blade retracts into the handle before the clumsy user wears the device against him or any other person.

A cet effet, la présente invention propose un dispositif de coupe à lame rétractable, comprenant : des moyens supports de lame, présentant des moyens formant butée d'entraínement, susceptibles de coulisser selon l'axe dudit manche entre une première position de repos où la lame est rétractée et une première position de travail où la lame est en extension en dehors dudit manche, lesdits moyens supports étant, dans ladite première position de travail, susceptibles d'être portés d'une seconde position de repos à une seconde position de travail, écartée de l'axe dudit manche, en passant par une seconde position intermédiaire ; des premiers moyens de rappel élastiques susceptibles de maintenir lesdits moyens supports de lame dans ladite première position de repos ; des moyens de déplacement commandables montés sur ledit manche, susceptibles de coopérer avec lesdits moyens supports et à prendre appui contre lesdits moyens formant butée d'entraínement pour entraíner lesdits supports de lame de ladite première position de repos vers ladite première position de travail ; des moyens d'appui susceptibles de recevoir lesdits moyens supports de lame dans ladite seconde position de travail pour les bloquer en translation ; et l'entraínement de la lame au moyen dudit manche contre une surface à découper entraíne lesdits moyens supports dans ladite seconde position de travail et provoque le désengagement desdits moyens de déplacement commandables engagés dans lesdits moyens formant butée d'entraínement de façon que lesdits moyens de rappel élastiques entraínent lesdits moyens supports de lame dans ladite première position de repos dès que la lame n'est plus en contact avec ladite surface et que lesdits moyens d'appui libèrent lesdits moyens supports de lame qui sont portés de ladite seconde position de travail vers ladite seconde position intermédiaire.To this end, the present invention provides a blade cutting device retractable, comprising: blade support means, having means forming a drive stop, capable of sliding along the axis said handle between a first rest position where the blade is retracted and a first working position where the blade is extended outside said handle, said support means being, in said first position of work, likely to be brought from a second rest position to a second working position, spaced from the axis of said handle, passing through a second intermediate position; first elastic return means capable of holding said blade support means in said first rest position; controllable displacement means mounted on said handle, capable of cooperating with said means supports and to bear against said means forming a stop drive to drive said blade supports of said first rest position towards said first working position; support means capable of receiving said blade support means in said second working position to block them in translation; and the blade drive by means of said handle against a surface to be cut causes said support means in said second working position and causes the disengagement of said controllable displacement means engaged in said means forming a drive stop so that said means elastic return entrain said blade support means in said first rest position as soon as the blade is no longer in contact with said surface and that said support means release said support means from blade which are carried from said second working position to said second intermediate position.

Ainsi, une caractéristique du dispositif de coupe selon l'invention, réside dans le mode de coopération des moyens supports de lame avec les moyens de déplacement commandables et avec les moyens d'appui, permettant simultanément le blocage des moyens supports de lame en translation dans la seconde position de travail et le désengagement des moyens de déplacement commandables engagés dans les moyens formant butée d'entraínement. De la sorte, dès que la lame n'est plus en contact avec la surface à découper, les moyens d'appui libèrent les moyens supports de lame qui, entraínés par les moyens de rappel élastiques retrouvent la première position de repos dans laquelle la lame est complètement rétractée dans la manche. Grâce à cette caractéristique, l'utilisateur du dispositif ne peut se blesser puisque la lame se rétracte lorsqu'elle quitte la surface à découper.Thus, a characteristic of the cutting device according to the invention resides in the mode of cooperation of the blade support means with the means controllable movement and with the support means, allowing simultaneously blocking the blade support means in translation in the second working position and disengagement of the means of movement controllable engaged in the means forming a drive stop. Of the so, as soon as the blade is no longer in contact with the surface to be cut, the support means release the blade support means which, driven by the elastic return means return to the first rest position in which the blade is fully retracted into the handle. Thanks to that characteristic, the user of the device cannot be injured since the blade is shrinks when it leaves the surface to be cut.

De façon particulièrement avantageuse, lesdits moyens supports de lame, présentant une partie supérieure et une partie inférieure, s'étendent longitudinalement et comporte une première extrémité dans laquelle la lame est maintenue dans le prolongement desdits moyens supports de lame, une partie intermédiaire comprenant lesdits moyens formant butée d'entraínement et une seconde extrémité de guidage desdits moyens supports. De la sorte, les moyens supports de lame sont susceptibles d'être guidés en translation dans le manche selon leur axe longitudinal entre la position de repos et la position de travail avec les moyens de déplacement commandables qui s'appliquent dans la partie intermédiaire.In a particularly advantageous manner, said support means for blade, having an upper part and a lower part, extend longitudinally and has a first end in which the blade is maintained in the extension of said blade support means, a intermediate part comprising said means forming a drive stop and a second guide end of said support means. In this way, the blade support means are capable of being guided in translation in the handle along their longitudinal axis between the rest position and the working position with controllable displacement means which apply in the middle part.

Préférentiellement, les moyens formant butée d'entraínement sont constitués de deux moyens formant ergot disposés sur les faces latérales de ladite partie intermédiaire dans sa partie inférieure, opposés l'un de l'autre et dont la surface d'appui est sensiblement perpendiculaire auxdits moyens supports. Ainsi, les moyens formant ergot constituent des points d'arrêt perpendiculaires à l'axe longitudinal des moyens supports de lame contre lesquels les moyens de déplacement commandables prennent appui lorsqu'ils sont commandés en translation.Preferably, the means forming a drive stop are consisting of two lug-shaped means arranged on the lateral faces of said intermediate part in its lower part, opposite one another and whose bearing surface is substantially perpendicular to said means supports. Thus, the lug means constitute stopping points perpendicular to the longitudinal axis of the blade support means against which the controllable displacement means are supported when are controlled in translation.

Selon une particularité avantageuse, lesdits moyens de déplacement commandables présentent une première partie faisant saillie hors du manche pour les commander, et une seconde partie se divisant en deux branches symétriques en regard l'une de l'autre, susceptible de chevaucher ladite partie supérieure au moins dans ladite partie intermédiaire et ladite première extrémité, les branches étant susceptibles de prendre appui sur les surfaces d'appui des moyens formant ergot. De la sorte, lorsque les moyens de déplacement commandables sont entraínés en translation, les branches s'appuient contre les moyens formant ergot et entraínent les moyens supports de lame vers ladite première position de travail dans laquelle la lame est sortie du manche.According to an advantageous feature, said displacement means controllable have a first part projecting out of the handle to order them, and a second part dividing into two branches symmetrical facing each other, likely to overlap said part at least in said intermediate portion and said first extremity, the branches being capable of bearing on the surfaces support means forming lug. In this way, when the means of controllable movement are driven in translation, the branches lean against the lug-forming means and drive the support means blade to said first working position in which the blade is extended of the handle.

On comprend que la seconde partie des moyens de déplacement commandables, doit nécessairement permettre le passage de la première extrémité des moyens supports de lame et a fortiori de la lame pour qu'ils se rétractent sous l'effet des moyens élastiques lorsque les moyens de déplacement sont maintenus en position de travail.We understand that the second part of the displacement means controllable, must necessarily allow the passage of the first end of the blade support means and a fortiori of the blade so that they retract under the effect of elastic means when the means of movement are kept in the working position.

Préférentiellement, lesdites branches de ladite seconde partie desdits moyens de déplacement commandables sont inclinées l'une par rapport à l'autre et par rapport à un plan de symétrie qui les sépare, et les parois latérales de ladite partie supérieure de ladite partie intermédiaire constituent des zones de frottement contre lesquelles les branches sont susceptibles de s'appliquer pour s'écarter l'une de l'autre lorsque lesdits moyens supports de lame sont entraínés vers lesdits moyens de déplacement commandables, et de se désengager desdits moyens formant ergot. Ainsi, la seconde partie des moyens de déplacement commandables forme une fourchette évasée dont la paroi interne des branches, au moins dans leur position médiane, vient en appui contre les parois latérales supérieures de la partie intermédiaire. En outre, l'extrémité des branches est susceptible d'être engagée dans les moyens formant butée d'entraínement situés dans la partie inférieure de la partie intermédiaire, lorsque les moyens supports de lame sont dans la première position de travail. De la sorte, le déplacement des moyens supports de lame, sensiblement perpendiculaire à leur axe longitudinal et vers le sommet de la fourchette où les branches se rejoignent provoque l'écartement des branches de la fourchette et la libération des moyens formant ergot. Cette situation se produit dès que l'on applique la lame contre la surface à découper après avoir entraíné les moyens de déplacement commandables et par conséquent les moyens supports de lame. Ces derniers étant alors portés dans ladite seconde position de travail. Preferably, said branches of said second part of said controllable displacement means are inclined one with respect to each other and with respect to a plane of symmetry which separates them, and the walls lateral of said upper part of said intermediate part constitute areas of friction against which the branches are likely to apply to deviate from each other when said support means of blade are driven towards said controllable displacement means, and disengage from said lug means. So the second part of controllable displacement means forms a flared fork, the inner wall of the branches, at least in their middle position, comes in support against the upper side walls of the intermediate part. In in addition, the ends of the branches may be engaged in the drive stop means located in the lower part of the intermediate part, when the blade support means are in the first working position. In this way, the displacement of the support means blade, substantially perpendicular to their longitudinal axis and towards the top of the fork where the branches meet causes the separation branches of the fork and the release of the lug means. This situation occurs as soon as the blade is applied against the surface to be cut after having trained the controllable means of movement and by therefore the blade support means. The latter being then carried in said second working position.

Selon une particularité avantageuse, la seconde partie desdits moyens de déplacement commandables entre les branches desquels ladite partie supérieure de ladite partie intermédiaire est susceptible d'être engagée constitue lesdits moyens d'appui susceptibles de bloquer lesdits moyens supports de lame dans ladite seconde position de travail. Ainsi, lorsque la lame est appliquée contre la surface à découper et que les moyens de déplacement commandables sont maintenus dans leur position de travail, les parois latérales supérieures de la partie intermédiaire viennent s'encastrer entre les branches de la fourchette et les écartent, mais elles permettent également, comme on l'expliquera plus en détails dans la suite de la description, le blocage en translation des moyens supports de lame par rapport aux moyens de déplacement commandables.According to an advantageous feature, the second part of said means controllable displacement between the branches of which said part upper of said intermediate part is likely to be engaged constitutes said support means capable of blocking said means blade supports in said second working position. So when the blade is applied against the surface to be cut and the displacement means controllable are kept in their working position, the walls upper side of the intermediate part are embedded between the fork branches and spread them apart, but they also allow, as will be explained in more detail in the following description, the blocking in translation of the blade support means with respect to the means controllable travel.

On comprend que lorsque l'application de la lame contre la surface à découper cesse, les branches de la fourchette tendent à se resserrer et à éloigner les moyens support de lame. De sorte que le blocage en translation cesse et que les moyens supports de lame sont pratiquement libres en translation.It is understood that when the application of the blade against the surface to cutting stops, the branches of the fork tend to tighten and move the blade support means away. So that the blockage in translation ceases and that the blade support means are practically free in translation.

Avantageusement, lesdits premiers moyens de rappel élastiques sont constitués par un ressort hélicoïdal, qui entraíne les moyens supports de lame dans la position de repos lorsqu'ils sont libres par rapport à la fourchette.Advantageously, said first elastic return means are constituted by a helical spring, which drives the blade support means in the rest position when they are free from the fork.

De façon préférentielle, le dispositif comprend en outre des deuxièmes moyens de rappel élastiques susceptibles de maintenir lesdits moyens de déplacement commandables dans une position de repos.Preferably, the device also comprises second elastic return means capable of maintaining said means of movement controllable in a rest position.

Selon un mode de réalisation avantageux, les moyens supports de lame et les moyens de déplacement commandables sont susceptibles d'être obtenus par moulage.According to an advantageous embodiment, the blade support means and the controllable means of movement are likely to be obtained by molding.

D'autres particularités et avantages de l'invention ressortiront à la lecture de la description faite ci-après de modes de réalisation particuliers de l'invention, donnés à titre indicatif mais non limitatif, en référence aux dessins annexés sur lesquels :

  • la figure 1 est une vue en coupe d'un dispositif de coupe conforme à l'invention dans une première position de repos ;
  • la figure 2 est une en coupe du dispositif représenté sur la figure 1 dans une première position de travail et une seconde position de repos ;
  • la figure 3 est une vue en coupe du dispositif représenté sur la figure 1 dans une seconde position de travail ;
  • la figure 4 est une vue en coupe du dispositif représenté sur la figure 1 dans une autre position de repos ;
  • la figure 5 est une vue de détail en perspective de moyens particuliers du dispositif représenté sur les figures précédentes ;
  • la figure 6 est une vue de détail en perspective d'autres moyens particuliers du dispositif représenté sur les figures 1, 2, 3 et 4 ;
  • la figure 6A est une vue de détail de dessous des autres moyens particuliers représentés sur la figure 6 ;
  • la figure 7A est une coupe droite du dispositif représenté sur la figure 1 selon VIIA-VIIA ; et,
  • la figure 7B est une coupe droite du dispositif représenté sur la figure 3 selon VIIB-VIIB.
Other particularities and advantages of the invention will emerge on reading the description given below of particular embodiments of the invention, given by way of indication but not limitation, with reference to the appended drawings in which:
  • Figure 1 is a sectional view of a cutting device according to the invention in a first rest position;
  • Figure 2 is a sectional view of the device shown in Figure 1 in a first working position and a second rest position;
  • Figure 3 is a sectional view of the device shown in Figure 1 in a second working position;
  • Figure 4 is a sectional view of the device shown in Figure 1 in another rest position;
  • Figure 5 is a detailed perspective view of particular means of the device shown in the preceding figures;
  • Figure 6 is a detailed perspective view of other particular means of the device shown in Figures 1, 2, 3 and 4;
  • FIG. 6A is a detailed view from below of the other particular means shown in FIG. 6;
  • Figure 7A is a cross section of the device shown in Figure 1 along VIIA-VIIA; and,
  • Figure 7B is a cross section of the device shown in Figure 3 according to VIIB-VIIB.

On décrira, tout d'abord, en référence à la figure 1 les éléments constitutifs essentiels du dispositif conforme à l'invention et leur disposition pour décrire ensuite leurs structures particulières en référence aux figures 5, 6A et 6B. Puis, on décrira le fonctionnement général du dispositif de coupe en référence aux autres figures.We will describe, first of all, with reference to Figure 1 the elements essential components of the device according to the invention and their arrangement to then describe their particular structures with reference to FIGS. 5, 6A and 6B. Then, the general operation of the cutting device will be described in reference to the other figures.

La figure 1 illustre un dispositif de coupe conforme à l'invention dans un état de repos. Il est constitué d'un manche 10 et d'une lame 12 rétractée dans la manche 10. La lame 12 est montée à l'extrémité 14 de moyens supports de lame 16 ou porte lame, qui s'étendent longitudinalement selon leur axe A. Le porte lame 16 est susceptible de coulisser à l'intérieur du manche 10 selon son axe longitudinal A pour faire sortir la lame 12 à l'extrémité ouverte 18 du manche 10 et il est maintenu dans une première position de repos, comme illustré sur la figure 1, par un ressort hélicoïdal 19. En outre, le porte lame 16 présente une partie intermédiaire 20 et une seconde extrémité de guidage 22, permettant à la fois le guidage en translation du porte lame 16 et le maintien de la lame 12 par rapport au manche 10. Pour ce faire, le manche présente un logement longitudinal 24, orienté vers l'extrémité ouverte 18 du manche 10, dans lequel est inséré le porte lame 16 de façon à le guider en translation.Figure 1 illustrates a cutting device according to the invention in a resting state. It consists of a handle 10 and a retracted blade 12 in the sleeve 10. The blade 12 is mounted at the end 14 of means blade supports 16 or blade holder, which extend longitudinally according to their axis A. The blade holder 16 is capable of sliding inside the handle 10 along its longitudinal axis A to bring out the blade 12 to the open end 18 of the handle 10 and it is held in a first rest position, as illustrated in FIG. 1, by a helical spring 19. In addition, the blade holder 16 has an intermediate portion 20 and a second guide end 22, allowing both guiding in translation of the blade holder 16 and the maintenance of the blade 12 relative to the handle 10. To do this, the handle has a longitudinal housing 24, oriented towards the open end 18 of the handle 10, into which the blade holder 16 so as to guide it in translation.

Le dispositif de coupe comprend des moyens de déplacement commandables 26, présentant une première partie 28, ou curseur, faisant saillie hors du manche 10 et une seconde partie 30 se divisant en deux branches symétriques que l'on détaillera dans la suite de la description et qui chevauche la partie supérieure 32 du porte lame 16 pour s'étendre jusqu'au regard de la partie inférieure 34 du porte lame 16. Comme l'illustre la figure 1, dans cette position de repos, la seconde partie 30 est située au regard de la partie intermédiaire du porte lame 16. En outre, la partie inférieure 34 du porte lame 16 présente, dans la partie intermédiaire 20 des moyens formant butée d'entraínement 36 que l'on détaillera également dans la suite de la description.The cutting device comprises displacement means controllable 26, presenting a first part 28, or cursor, making protrusion out of the handle 10 and a second part 30 dividing in two symmetrical branches which will be detailed in the following description and which overlaps the upper part 32 of the blade holder 16 to extend up to look at the lower part 34 of the blade holder 16. As illustrated in FIG. 1, in this rest position, the second part 30 is located opposite the intermediate part of the blade holder 16. In addition, the lower part 34 of the door blade 16 has, in the intermediate part 20, means forming a stop 36 which will also be detailed in the following description.

Les moyens de déplacement commandables sont représentés, sur la figure 1, dans leur position de repos et ils sont susceptibles d'être déplacés parallèlement au manche 10 sur lequel ils sont montés et sensiblement parallèlement à l'axe longitudinal A du porte lame 16. Par ailleurs, ils sont maintenus dans leur position de repos par un ressort hélicoïdal 38.The controllable displacement means are shown on the Figure 1, in their rest position and they are likely to be moved parallel to the handle 10 on which they are mounted and substantially parallel to the longitudinal axis A of the blade holder 16. Furthermore, they are held in their rest position by a helical spring 38.

On se référera maintenant à la figure 5 pour décrire les moyens de déplacement commandables 26. On retrouve sur cette figure les moyens de déplacement commandables 26 comportant la première partie 28 formant un curseur, susceptible d'être entraíné par les doigts de la main et la seconde partie 30 se divisant en deux branches symétriques 30a et 30b par rapport à un plan P et en regard l'une de l'autre. On comprend que la première partie 28 est située en dehors du manche 10 et que la seconde partie 30 est insérée dans le manche 10.We will now refer to Figure 5 to describe the controllable displacement means 26. We find in this figure the controllable displacement means 26 comprising the first part 28 forming a cursor, capable of being driven by the fingers of the hand and the second part 30 dividing into two symmetrical branches 30 a and 30 b with respect to a plane P and facing each other. It is understood that the first part 28 is located outside of the handle 10 and that the second part 30 is inserted into the handle 10.

Les branches 30a et 30b présentent chacune une extrémité 39 et une portion médiane 40 et 42 inclinés l'une par rapport à l'autre et par rapport au plan P qui les sépare, de sorte que la seconde partie 30 forme une fourchette sensiblement évasée. En outre, les branches 30a et 30b sont élastiquement mobiles l'une par rapport à l'autre perpendiculairement au plan P et plus particulièrement, elles sont susceptibles d'être écartées l'une de l'autre et de retrouver leur position initiale lorsque la contrainte cesse. Cette caractéristique est obtenue en réalisant les moyens de déplacement commandables 26 en matière plastique, par exemple en polyamide.The branches 30 a and 30 b each have an end 39 and a middle portion 40 and 42 inclined relative to each other and relative to the plane P which separates them, so that the second part 30 forms a fork substantially flared. In addition, the branches 30 a and 30 b are elastically movable relative to each other perpendicular to the plane P and more particularly, they are capable of being spaced from one another and of returning to their initial position. when the constraint ceases. This characteristic is obtained by producing the controllable displacement means 26 made of plastic, for example polyamide.

Les moyens de déplacement commandables 26 coopèrent avec les moyens supports de lame 16 ou porte lame, que l'on retrouve illustrés en perspective sur la figure 6 et que l'on va maintenant décrire plus en détails.The controllable displacement means 26 cooperate with the blade support means 16 or blade holder, which can be found illustrated in perspective in FIG. 6 and which will now be described in more detail.

La première extrémité, dépourvue de lame, se prolonge par la partie intermédiaire 20, elle-même prolongée par la seconde extrémité de guidage 22. La partie intermédiaire 20 comporte les moyens formant butée d'entraínement 36, situés dans la partie inférieure 34 de la paroi latérale du porte lame 16. Bien évidemment, des moyens formant butée d'entraínement 36 identiques sont situés de manière symétrique sur la paroi latérale opposée. Sur la figure 6A, une vue de détail de dessous, illustre les moyens formant butée d'entraínement 36 solidaire de la partie intermédiaire 20 qui elle-même, est prolongée par la première extrémité 14. Les moyens formant butée 36 constituent un ergot dont la face d'appui 44 est sensiblement perpendiculaire à l'axe longitudinal A du support de lame 16. En outre, l'ergot 36 est situé contre la face latérale de la partie intermédiaire 20 à proximité du bord que la première extrémité 14 prolonge. De la sorte, la partie intermédiaire 20 présente une face latérale d'appui 46, contre laquelle la branche 30b de la seconde partie 30 des moyens de déplacement commandables est susceptible de s'appliquer.The first end, devoid of blade, is extended by the intermediate part 20, itself extended by the second guide end 22. The intermediate part 20 comprises the means forming drive stop 36, located in the lower part 34 of the side wall of the blade holder 16. Obviously, means forming an identical drive stop 36 are located symmetrically on the opposite side wall. In Figure 6A, a detail view from below, illustrates the means forming a drive stop 36 integral with the intermediate portion 20 which itself is extended by the first end 14. The stop means 36 constitute a lug the bearing face 44 is substantially perpendicular to the longitudinal axis A of the blade support 16. In addition, the lug 36 is located against the lateral face of the intermediate part 20 near the edge that the first end 14 extends. In this way, the intermediate part 20 has a lateral support face 46, against which the branch 30b of the second part 30 of the controllable displacement means is capable of being applied.

De façon totalement symétrique, par rapport au plan T de symétrie du porte lame 16, un ergot 36 et une face d'appui sont situés contre l'autre face latérale, n'apparaissant pas sur la figure 6.Totally symmetrical, with respect to the plane T of symmetry of the blade holder 16, a lug 36 and a bearing face are located against the other face side, not shown in Figure 6.

On a également représenté sur la figure 6 la seconde extrémité 22, qui prolonge la partie intermédiaire, avec un profil de type "IPE" de façon à la rigidifier et à faciliter le guidage. En outre, les parois latérales de ladite partie supérieure 32 de ladite partie intermédiaire 20 sont légèrement tronquées de façon à former des surfaces inclinées 48 symétriques par rapport au plan T, de chaque côté du porte lame 16. Ces surfaces inclinées 48 constituent des zones de frottement contre lesquelles les branches sont susceptibles de s'appliquer comme on l'expliquer dans la suite de la description en référence aux figures 7A et 7B.FIG. 6 also shows the second end 22, which extends the intermediate part, with a profile of type "IPE" so as to stiffen and facilitate guidance. In addition, the side walls of said part upper 32 of said intermediate portion 20 are slightly truncated so as to form inclined surfaces 48 symmetrical with respect to the plane T, on each side of the blade holder 16. These inclined surfaces 48 constitute friction zones against which the branches are likely to apply as explained in the following description with reference in Figures 7A and 7B.

On retrouve sur la figure 7A, le porte lame 16 en section droite au niveau des ergots 36, et les moyens de déplacement commandables 26 dont la seconde partie 30 coïncide avec le porte lame 16 en le chevauchant, dans une première position d'équilibre stable. On retrouve également sur cette figure, les surfaces inclinées 48 contre lesquelles viennent s'appliquer la paroi interne des portions médianes inclinées 40, 42 des branches 30a et 30b, et leur extrémité 39 qui s'applique sur les faces latérales d'appui 46. Dans cette position, comme on l'expliquera en référence à la figure 1, le bord de l'extrémité 39 des branches 30a et 30b est situé en regard des faces d'appui 44 des ergots 36. Ainsi, lorsque les moyens de déplacement commandables sont entraínés, les bords des extrémités 39 s'appliquent contre les faces d'appui 44 pour entraíner le porte lame 16.Found in Figure 7A, the blade holder 16 in cross section at the pins 36, and the controllable displacement means 26, the second part 30 coincides with the blade holder 16 overlapping it, in a first position of stable equilibrium . Also found in this figure, the inclined surfaces 48 against which the internal wall of the inclined median portions 40, 42 of the branches 30 a and 30 b are applied, and their end 39 which is applied to the lateral bearing faces 46. In this position, as will be explained with reference to FIG. 1, the edge of the end 39 of the branches 30 a and 30 b is situated opposite the bearing faces 44 of the lugs 36. Thus, when the controllable displacement means are driven, the edges of the ends 39 apply against the bearing faces 44 to drive the blade holder 16.

Dans une seconde position d'équilibre instable, telle qu'illustré sur la figure 7B et correspondant à une seconde position de travail conformément à la figure 3, le porte lame 16 est déplacé dans une direction F vers la première partie 28 des moyens de déplacement commandables 26, où se rejoignent les deux branches 30a et 30b.In a second unstable equilibrium position, as illustrated in FIG. 7B and corresponding to a second working position in accordance with FIG. 3, the blade holder 16 is moved in a direction F towards the first part 28 of the displacement means controllable 26, where the two branches 30 a and 30 b meet.

De la sorte, les surfaces inclinées 48 sont entraínées contre les parois internes des portions médianes inclinées 40 et 42, et glisse en frottant contre elles en écartant les branches 30a et 30b puisque la largeur de la partie intermédiaire 20 est constante et que la fourchette formée par les branches 30a et 30b est évasée. Ainsi, l'extrémité 38 des branches 30a et 30b se décolle des faces latérales d'appui 46 de sorte que, les bords des extrémités 39 se désengagent des faces d'appui 44 des ergots 36 et le blocage en translation du porte lame 16 par rapport aux moyens de déplacement commandables 26 n'est plus assuré par la coopération des ergots 36 et des bords de l'extrémité 39 des branches 30a et 30b.In this way, the inclined surfaces 48 are entrained against the internal walls of the inclined median portions 40 and 42, and slides while rubbing against them while spreading the branches 30 a and 30 b since the width of the intermediate part 20 is constant and that fork formed by the branches 30 a and 30 b is flared. Thus, the end 38 of the branches 30 a and 30 b comes off the lateral support faces 46 so that the edges of the ends 39 disengage from the support faces 44 of the lugs 36 and the translational locking of the blade holder 16 relative to the controllable displacement means 26 is no longer ensured by the cooperation of the lugs 36 and the edges of the end 39 of the branches 30 a and 30 b .

En revanche, comme on va l'expliquer, lorsque la force F de rapprochement entre le porte lame 16 et les moyens de déplacement commandables est suffisante, le porte lame 16 est bloqué en translation par les branches 30a et 30b dont la paroi interne des portions médianes 40, 42 bloque par frottement la partie intermédiaire 20 et donc, le déplacement longitudinal du porte lame 16.However, as will be explained, when the approximation force F between the blade holder 16 and the controllable moving means is sufficient, the blade holder 16 is locked in translation by the branches 30a and 30b, the inner wall of middle portions 40, 42 blocks by friction the intermediate part 20 and therefore, the longitudinal movement of the blade holder 16.

La figure 1 illustre le dispositif de coupe conforme à l'invention au repos. Le porte lame 16 est situé dans une première position de repos correspondant à une position dans laquelle la lame 12 est rétractée. Dans cette position, les moyens de déplacement commandables 26 sont également dans une position de repos. Et la position de la seconde partie 30 des moyens de déplacement commandables 26 par rapport au porte lame 16, est celle qui est représentée sur la figure 7A. Les extrémités 39 des branches 30a et 30b sont alors en appui contre les faces latérales d'appui 46 et leur bord est en regard des surfaces d'appui 44 des ergots 36.Figure 1 illustrates the cutting device according to the invention at rest. The blade holder 16 is located in a first rest position corresponding to a position in which the blade 12 is retracted. In this position, the controllable displacement means 26 are also in a rest position. And the position of the second part 30 of the controllable displacement means 26 relative to the blade holder 16, is that which is shown in FIG. 7A. The ends 39 of the branches 30 a and 30 b are then in abutment against the lateral bearing faces 46 and their edge is opposite the bearing surfaces 44 of the pins 36.

De la sorte, lorsque le curseur 28 est entraíné en translation selon l'axe du manche, comme illustré sur la figure 2, les bords des extrémités 39 des branches 30a et 30b prennent appui contre les surfaces d'appui 44 des ergots 36 et entraínent simultanément le support de lame 16 pour le porter dans une première position de travail où la lame est sortie du manche 10. Dans cette position, les ressorts hélicoïdaux 19, 38 sont portés en extension et exercent une force de rappel isostatique sur le porte lame 16 et sur les moyens de déplacements commandables 26, lesquels sont maintenus en position.In this way, when the cursor 28 is driven in translation along the axis of the handle, as illustrated in Figure 2, the edges of the ends 39 of the branches 30 a and 30 b bear against the bearing surfaces 44 of the pins 36 and simultaneously drive the blade support 16 to carry it in a first working position where the blade has come out of the handle 10. In this position, the helical springs 19, 38 are carried in extension and exert an isostatic restoring force on the door blade 16 and on the controllable displacement means 26, which are held in position.

Cette première position de travail correspond à une seconde position de repos, et ce n'est que dans une seconde position de travail illustrée sur la figure 3 dans laquelle la lame 12 est appliquée contre la surface à découper que le découpage proprement dit a lieu.This first working position corresponds to a second position of rest, and only in a second working position illustrated on the Figure 3 in which the blade 12 is applied against the surface to be cut that the actual cutting takes place.

Ainsi, lorsque l'on applique la lame 12 contre la surface à découper une force R s'exerce sur elle et par conséquent sur le porte lame 16 dont l'axe longitudinal A est écarté de l'axe du manche M. En conséquence, le porte lame 16 pivote légèrement par rapport à sa seconde extrémité 22 qui est en appui dans le manche 10 et la partie intermédiaire 20 du porte lame 16 est forcée contre les moyens de déplacement commandables 26, toujours maintenus en position, de sorte que les branches 30a et 30b sont écartées l'une de l'autre comme l'illustre la figure 7B. Ainsi, les bords des extrémités 39 se désengagent des surfaces d'appui 44 des ergots 36 et le support de lame 16 n'est plus maintenu en translation par les branches 30a et 30b. En revanche, comme on l'a expliqué précédemment la paroi interne des portions médianes 40, 42 bloque par frottement la partie intermédiaire 20 et donc, le déplacement longitudinal du porte lame 16. De la sorte, lors de la translation entre la seconde position de travail, simultanément, le porte lame 16 est libéré en translation par les bords des extrémités 39 qui coopèrent avec les ergots et bloqué en translation par les portions médianes inclinées 40 et 42 des branches 30a et 30b. Cette seconde position de travail est maintenue tant que la lame 12 est maintenue contre la surface à découper, et que le curseur 28 est maintenu en position.Thus, when the blade 12 is applied against the surface to be cut, a force R is exerted on it and consequently on the blade holder 16, the longitudinal axis A of which is spaced from the axis of the handle M. Consequently, the blade holder 16 pivots slightly relative to its second end 22 which is in abutment in the handle 10 and the intermediate part 20 of the blade holder 16 is forced against the controllable displacement means 26, still held in position, so that the branches 30 a and 30 b are separated from each other as illustrated in FIG. 7B. Thus, the edges of the ends 39 disengage from the bearing surfaces 44 of the lugs 36 and the blade support 16 is no longer held in translation by the branches 30 a and 30 b . On the other hand, as explained above, the internal wall of the middle portions 40, 42 blocks by friction the intermediate part 20 and therefore, the longitudinal movement of the blade holder 16. In this way, during the translation between the second position of work, simultaneously, the blade holder 16 is released in translation by the edges of the ends 39 which cooperate with the lugs and locked in translation by the inclined median portions 40 and 42 of the branches 30 a and 30 b . This second working position is maintained as long as the blade 12 is held against the surface to be cut, and the cursor 28 is held in position.

En revanche, dès que la lame 12 n'est plus en appui contre la surface à découper, le support de lame 16 n'est plus déplacé à force contre la paroi interne des portions médianes 40, 42, et il évolue de la seconde position de travail vers une seconde position intermédiaire du fait du rapprochement des branches 30a et 30b d'une vers l'autre. De la sorte les portions médianes 40, 42, ne bloquent plus en translation le support de lame 16 et les ergots 36 ne s'engagent pas dans les branches 30a et 30b. Ainsi, sous l'effet de la force de rappel produite par le ressort hélicoïdal 19, le support de lame est entraíné dans la première position de repos, telle que représentée sur la figure 4. Ainsi, bien que le curseur 28 soit maintenu en position, la lame est rétractée.On the other hand, as soon as the blade 12 is no longer in abutment against the surface to be cut, the blade support 16 is no longer forcibly moved against the internal wall of the middle portions 40, 42, and it moves from the second position working towards a second intermediate position due to the approximation of the branches 30 a and 30 b from one to the other. In this way the middle portions 40, 42 no longer block in translation the blade support 16 and the pins 36 do not engage in the branches 30 a and 30 b . Thus, under the effect of the restoring force produced by the helical spring 19, the blade support is driven in the first rest position, as shown in Figure 4. Thus, although the slider 28 is held in position , the blade is retracted.

La présente invention n'est pas limitée au mode de réalisation précédemment écrit. Selon un autre mode de réalisation particulier, les moyens supports de lame présentent des moyens formant fourchette et les moyens de déplacement commandables présentent une partie apte à coopérer avec lesdits moyens formant fourchette, et en particulier ils comportent des moyens formant ergot.The present invention is not limited to the embodiment previously written. According to another particular embodiment, the blade support means have fork means and the controllable displacement means have a part capable of cooperating with said fork means, and in particular they comprise means forming a lug.

Claims (8)

Dispositif de coupe à lame rétractable comportant une lame et un manche dans lequel elle est susceptible de se rétracter, caractérisé en ce qu'il comprend : des moyens supports (16) de lame (12), présentant des moyens formant butée d'entraínement (36), susceptibles de coulisser selon l'axe dudit manche (10) entre une première position de repos où la lame (12) est en extension en dehors dudit manche (10), lesdits moyens supports (16) étant, dans ladite première position de travail, susceptibles d'être portés d'une seconde position de repos à une seconde position de travail, écartée de l'axe M dudit manche (10), en passant par une seconde position intermédiaire ; des premiers moyens (19) de rappel élastiques susceptibles de maintenir lesdits moyens supports (16) de lame (12) dans ladite première position de repos ; des moyens de déplacement commandables (26) montés sur ledit manche (10), susceptibles de coopérer avec lesdits moyens supports (16) et à prendre appui contre lesdits moyens formant butée d'entraínement (36) pour entraíner lesdits moyens supports (16) de lame (12) de ladite première position de repos vers ladite première position de travail ; des moyens d'appui susceptible de recevoir lesdits moyens supports (16) de lame (12) dans ladite seconde position de travail pour les bloquer en translation ;    et en ce que l'entraínement de la lame (12) au moyen dudit manche (10) contre une surface à découper entraíne lesdits moyens supports (16) dans ladite seconde position de travail et provoque le désengagement desdits moyens de déplacement commandables (26) engagés dans lesdits moyens formant butée (36) d'entraínement de façon que lesdits moyens de rappel élastiques (19) entraínent lesdits moyens supports (16) de lame (12) dans ladite première position de repos dès que la lame (12) n'est plus en contact avec ladite surface et que lesdits moyens d'appui libèrent lesdits moyens supports (16) de lame (12) qui sont portés de ladite seconde position de travail vers ladite seconde position intermédiaire.Cutting device with retractable blade comprising a blade and a handle in which it is capable of retracting, characterized in that it comprises: blade support means (16) (12), having means forming a drive stop (36), capable of sliding along the axis of said handle (10) between a first rest position where the blade (12) is in extension outside said handle (10), said support means (16) being, in said first working position, capable of being brought from a second rest position to a second working position, spaced from the axis M of said sleeve (10), passing through a second intermediate position; first elastic return means (19) capable of holding said blade support means (16) (12) in said first rest position; controllable displacement means (26) mounted on said handle (10), able to cooperate with said support means (16) and to bear against said drive stop means (36) to drive said support means (16) blade (12) from said first rest position to said first working position; support means capable of receiving said blade support means (16) (12) in said second working position to block them in translation; and in that the drive of the blade (12) by means of said handle (10) against a surface to be cut causes said support means (16) in said second working position and causes the disengagement of said controllable displacement means (26) engaged in said stop means (36) for driving so that said elastic return means (19) entrain said blade support means (16) (12) in said first rest position as soon as the blade (12) does not is no longer in contact with said surface and that said support means release said blade support means (16) (12) which are brought from said second working position to said second intermediate position. Dispositif à coupe à lame rétractable suivant la revendication 1, caractérisé en ce que lesdits moyens supports (16) de lame, présentant une partie supérieure (32) et une partie inférieure (34), s'étendent longitudinalement et comporte une première extrémité (14) dans laquelle la lame (12) est maintenue dans le prolongement desdits moyens supports (16) de lame (12), une partie intermédiaire (20) comprenant lesdits moyens formant butée (36) d'entraínement et une seconde extrémité (22) de guidage desdits moyens supports (16).Cutting device with retractable blade according to claim 1, characterized in that said blade support means (16), having an upper part (32) and a lower part (34), extend longitudinally and have a first end (14 ) in which the blade (12) is held in the extension of said support means (16) of blade (12), an intermediate part (20) comprising said means forming a stop (36) for driving and a second end (22) of guiding said support means (16). Dispositif de coupe à lame rétractable suivant la revendication 1 ou 2, caractérisé en ce que lesdits moyens formant butée (36) d'entraínement sont constitués de deux moyens formant ergot disposés sur les faces latérales de ladite partie intermédiaire (20) dans sa partie inférieure (34), opposés l'un de l'autre et dont la surface d'appui (44) est sensiblement perpendiculaire auxdits moyens supports.Cutting device with retractable blade according to claim 1 or 2, characterized in that said drive stop means (36) consist of two lug means arranged on the side faces of said intermediate part (20) in its lower part (34), opposite one another and whose bearing surface (44) is substantially perpendicular to said support means. Dispositif de coupe à lame rétractable suivant la revendication 3, caractérisé en ce que lesdits moyens de déplacement (26) commandables présentent une première partie (28) faisant saillie hors du manche (10) pour les commander, et une seconde partie (30) se divisant en deux branches symétriques (30a, 30b) en regard l'une de l'autre, susceptible de chevaucher ladite partie supérieure (32) au moins dans ladite partie intermédiaire (20) et ladite première extrémité (14), les branches (30a, 30b) étant susceptibles de prendre appui sur les surfaces d'appui (44) des moyens formant ergot (36).Cutting device with retractable blade according to claim 3, characterized in that said controllable displacement means (26) have a first part (28) projecting from the handle (10) for controlling them, and a second part (30) is dividing into two symmetrical branches (30 a , 30 b ) facing each other, capable of overlapping said upper part (32) at least in said intermediate part (20) and said first end (14), the branches (30, 30b) being able to bear on the bearing surfaces (44) lug means (36). Dispositif de coupe à lame rétractable suivant la revendication 4, caractérisé en ce que lesdites branches (30a, 30b) de ladite seconde partie desdites moyens de déplacement (26) commandables sont inclinées l'une par rapport à l'autre et par rapport à un plan de symétrie P qui les sépare, et ce que les parois latérales (48) de ladite partie supérieure de ladite partie intermédiaire constituent des zones de frottement contre lesquelles les branches (30a, 30b) sont susceptibles de s'appliquer pour s'écarter l'une de l'autre lorsque lesdits moyens supports (16) de lame sont entraínés vers lesdits moyens de déplacement (26) commandables, et de se désengager desdits moyens formant ergot (36).A cutting device with retractable blade according to claim 4, characterized in that said branches (30a, 30b) of said second portion of said moving means (26) controllable are inclined relative to one another and to a plane of symmetry P which separates them, and that the side walls (48) of said upper part of said intermediate part constitute friction zones against which the branches (30 a , 30 b ) are capable of being applied for move away from each other when said blade support means (16) are driven towards said controllable displacement means (26), and to disengage from said lug means (36). Dispositif de coupe à lame rétractable suivant la revendication 5, caractérisé en ce que la seconde partie desdits moyens de déplacement (26) commandables entre les branches (30a, 30b) desquels ladite partie supérieure (32) de ladite partie intermédiaire est susceptible d'être engagée constitue lesdits moyens d'appui susceptibles de bloquer lesdits moyens supports (16) de lame dans ladite seconde position de travail.A cutting device with retractable blade according to claim 5, characterized in that the second portion of said moving means (26) controllable between the branches (30 a, 30 b) of which said upper portion (32) of said intermediate portion is likely to 'being engaged constitutes said support means capable of blocking said blade support means (16) in said second working position. Dispositif de coupe à lame rétractable selon l'une quelconque des revendications 1 à 6; caractérisé en ce que lesdits premiers moyens de rappel élastiques sont constitués par un ressort hélicoïdal.A retractable blade cutting device according to any one of claims 1 to 6; characterized in that said first elastic return means are constituted by a helical spring. Dispositif de coupe à lame rétractable selon l'une quelconque des revendications 1 à 7, caractérisé en ce qu'il comprend en outre des deuxièmes moyens de rappel élastiques susceptibles de maintenir lesdits moyens de déplacement commandables dans une position de repos.Cutting device with retractable blade according to any one of Claims 1 to 7, characterized in that it further comprises second elastic return means capable of maintaining said controllable displacement means in a rest position.
EP02362012A 2001-07-06 2002-07-03 Cutting device with retractable blade Expired - Lifetime EP1273399B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0109068A FR2826898B1 (en) 2001-07-06 2001-07-06 RETRACTABLE BLADE CUTTING DEVICE
FR0109068 2001-07-06

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EP1273399A1 true EP1273399A1 (en) 2003-01-08
EP1273399B1 EP1273399B1 (en) 2005-01-12

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US (1) US6775911B2 (en)
EP (1) EP1273399B1 (en)
DE (1) DE60202553T2 (en)
FR (1) FR2826898B1 (en)

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EP1674218A1 (en) * 2004-12-22 2006-06-28 Martor Kg Knife
EP1674219A1 (en) * 2004-12-22 2006-06-28 Martor Kg Knife
CN100526028C (en) * 2004-12-22 2009-08-12 玛托两合公司 Knife
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EP1946897A1 (en) 2007-01-19 2008-07-23 Mure et Peyrot Knife with automatically retractable blade
US8250764B2 (en) 2007-04-16 2012-08-28 Adco Industries-Technologies, L.P. Adjustable utility knife
EP1985417A1 (en) * 2007-04-27 2008-10-29 Mure et Peyrot Safety knife with system for automatic blade retraction after cutting
FR2915416A1 (en) * 2007-04-27 2008-10-31 Mure & Peyrot Sarl SAFETY KNIFE WITH AUTOMATIC BLADE RETRACTION DEVICE AT THE END OF THE CUT
CN105856279A (en) * 2008-04-17 2016-08-17 玛托两合公司 Knife
CN105856280A (en) * 2008-04-17 2016-08-17 玛托两合公司 Knife
EP2359990A1 (en) 2010-02-15 2011-08-24 Mure et Peyrot Safety knife
EP2388113A1 (en) 2010-05-21 2011-11-23 Mure et Peyrot Safety knife
EP3090843A1 (en) * 2015-05-08 2016-11-09 Martor Kg Knife
CN106113095A (en) * 2015-05-08 2016-11-16 玛托两合公司 Cutter

Also Published As

Publication number Publication date
US20030019109A1 (en) 2003-01-30
DE60202553T2 (en) 2005-12-29
US6775911B2 (en) 2004-08-17
EP1273399B1 (en) 2005-01-12
FR2826898B1 (en) 2003-09-19
DE60202553D1 (en) 2005-02-17
FR2826898A1 (en) 2003-01-10

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