EP1964652A1 - Safety knife - Google Patents

Safety knife Download PDF

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Publication number
EP1964652A1
EP1964652A1 EP08102013A EP08102013A EP1964652A1 EP 1964652 A1 EP1964652 A1 EP 1964652A1 EP 08102013 A EP08102013 A EP 08102013A EP 08102013 A EP08102013 A EP 08102013A EP 1964652 A1 EP1964652 A1 EP 1964652A1
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EP
European Patent Office
Prior art keywords
pusher
knife
blade
rocker
safety
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
EP08102013A
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German (de)
French (fr)
Other versions
EP1964652B2 (en
EP1964652B1 (en
Inventor
Jean-Claude Peyrot
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mure et Peyrot SAS
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Mure et Peyrot SAS
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Application filed by Mure et Peyrot SAS filed Critical Mure et Peyrot SAS
Publication of EP1964652A1 publication Critical patent/EP1964652A1/en
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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 safety knife comprising a body and a blade with axial output of the body, automatically retractable and having a maneuvering pusher protruding from the body.
  • the safety knives generally include a blade entering the body of the knife to avoid injuring their user when they are not in use and can be put in a pocket or bag safely.
  • the operators manipulate the device to make a cut and release it once this cut is made which retracts and secures the blade in the body of the knife.
  • the longitudinal devices are generally positioned on the knife to be manipulated with the thumb and, in the case of intensive use in cardboard receiving workshop to unpack, for example, the repeated succession of movements of maneuvering the blade quickly becomes tiring even cause of pathologies such as tendonitis.
  • the present invention is placed in the context of producing a more ergonomic knife that knives with longitudinal operating devices and in particular the realization of a knife whose operating device, transverse to the body of the knife, can be maneuver using several fingers in a natural movement of gripping the knife and tightening the fingers around the body of the knife.
  • the safety knife of the present invention is provided with a knife body and a retractable blade in the body and characterized in that it comprises a pusher, transverse to the body of the knife, the pusher protruding transversely of the body of the knife when the blade is retracted into the body of the knife and sinking into the body of the knife to remove the blade, and provided with means for transforming the transverse movement of the pusher in longitudinal movement of the blade disposed between the pusher and the blade. blade.
  • the pusher is disposed in the lower part of the knife body in a median area of the knife body, approximately opposite the position of the index and / or major of the operator.
  • the pusher is disposed in the upper part of the knife and is operable with the palm of the operator.
  • the knife of the invention comprises means for preventing actuation of the pusher which preferably comprise a locking rocker provided with a distal end which comprises a shoulder for retaining the pusher in the output position of the knife body.
  • the blocking rocker is operated by a button, slidably disposed on the body of the knife, the button being configured to rotate the blocking rocker and release the pusher during its sliding.
  • the locking rocker is operated by a push button causing it to rotate.
  • the safety knife shown at figure 1 is provided with a knife body 1 consisting of two half-shells 1a, 1b.
  • the body contains a blade 2 retractable in the body and being operated by means of a pusher 3, transverse to the body of the knife.
  • a pusher 3 which has a transverse movement to the body of the knife, protrudes transversely of the body of the knife when the blade 2 is tucked into the body of the knife 1 and sinks in the knife body to remove the blade 2.
  • the pusher 3 is disposed in the lower part of the body of the knife 1, in a median area of the knife body, approximately opposite the position of the index and / or major of the operator.
  • the operation of the pusher is in a natural movement of gripping and gripping of the fingers on the knife and does not require extension of the thumb as in the case of knives with side or upper slider.
  • the figure 1 represents the pusher in the rest position at rest and the blade retracted
  • the figure 2 represents the pusher in the actuated position and the blade in the extended position following the actuation of the pusher.
  • the pusher 3 ' is a rotary pusher disposed in the upper part of the knife and operable with the palm of the operator which again corresponds to a maneuver in a natural sense completing the gripping of the knife.
  • the blade 2 is carried by a blade holder 6 more particularly shown in FIG. figure 3 .
  • the blade holder 6 comprises slides 19, 20 which hold the blade longitudinally and comprises, for the retention of the blade, a pin 16 and a boss 21 received in cutouts 18, 22 of the blade and a support tongue 17 so that the blade, guided by the slides slides under the support tongue 17 and engages on the pin 16 and the boss 21.
  • means 4, 5 for transforming the transverse movement of the pusher 3 in longitudinal movement of the blade are arranged between the pusher and the blade holder 6 on which is arranged the blade 2.
  • the rocker 4 is rotatably mounted on a first axis 8, carried by a shell 1a of the body and received in a housing 25 of the rocker 4.
  • the rocker comprises a second axis 9, rotational drive of the rocker by the pusher which comprises a cam path 15 in which is received the second axis 9.
  • the rocker comprises a housing 10, for receiving a third axis 11 disposed on the rod, the third axis providing a hinge allowing the thrust of the rod by the rocker during the rotation of the rocker .
  • the distance between the first 8 and second 9 of axes is less than the distance between the first 8 and the third 11 of the axes.
  • the blade holder 6 is biased by a spring 7, in a direction of retraction of the blade into the body.
  • the spring 7 clings to a pin 23 of the rocker and a stud 24 of the body and works in extension when the blade is out of the body.
  • the figure 4 represents the parts of the blade operating device in perspective and engaged with each other to represent the kinematic chain between the pusher and the blade holder.
  • a disadvantage of the knife of the present invention is that the movement of the pusher being transversely to the longitudinal axis of the knife body, an accidental pressing on the pusher is possible, for example when the operator puts his knife in a pocket .
  • a particular embodiment of the invention provides means 12, 13, 32, 33 for prohibiting operation of the pusher 3.
  • the maneuvering prohibition means comprise a locking rocker 13, 33 provided with a distal end which comprises a shoulder 35 holding the pusher 3, 3 'in the output position of the knife body.
  • the blocking rocker 13 is operated by a button 12, slidably disposed on the body of the knife, the button 12 being configured to rotate the blocking rocker 13 and release the pusher during its sliding.
  • a spring 14 is disposed between the body and the operating prohibition means for biasing the button 12 and the blocking rocker 13 in the pusher retaining position.
  • the button 12 is in the form of a slider slidably disposed on the body of the knife and can be slidably operated along the body of the knife.
  • the slide button represented in the rest position figure 1 and in advanced position in figure 2 is maneuvered with the thumb in the case of the example of Figures 1 and 2 .
  • the button 12 acts, when pushed, on a blocking rocker 13 provided with a distal retaining end of the pusher 3 in the extended position of the body.
  • the button 12 adapted to slide on the body is configured to rotate the blocking rocker 13 and release the pusher.
  • the maneuvering prohibition means comprise a spring 14 which is arranged between the body and the maneuver prohibition means to recall the sliding knob 12 and the locking rocker 13 in the retaining position of the pusher.
  • the spring is fixed between a pin 26 of the knife body and a hook 27 carried by an extension of the button.
  • the articulation between the button 12 and the blocking rocker 13 is between a pin 28 and a cam track 29 more particularly represented in FIG. figure 4 , the locking rocker 13 being rotatably mounted on an axis 30 of the knife body as shown in FIG. figure 3 .
  • the blocking rocker 13 When the pusher 3 is in the extended position, the blocking rocker 13 has a shoulder engaged with the inner face of the pusher and when the button is slidably operated, the shoulder disappears leaving free passage of the pusher inwards of the body of the knife.
  • the blocking rocker abuts against a side face of the pusher and, as soon as the pusher is released, the blocking rocker returns to the blocking position of the pusher.
  • This principle ensures the blocking of the pusher as soon as the cutting operation is completed and the blade is retracted into the knife body which provides great safety to the knife of the invention.
  • the maneuvering prohibition means do not comprise a sliding button but comprise a push button 32 rotating a blocking rocker 33 provided with a distal retaining end of the pusher 3 'in the extended position of the body.
  • a spring link 34 connects the push button 32 to the blocking rocker 33 which, as in the example of the Figures 1 to 4 has a shoulder to retain the pusher 3 'in the output position of the knife body.
  • the spring link 34 just as the spring 14 exerts a restoring force on the push button 32 and on the blocking rocker 33 to return them to the blocking position of the pusher 3 '.
  • the position of the maneuvering means of the example of the figure 6 can be positioned on a lower part of the knife to be manipulated with a finger.

Abstract

The cutter has a blade (2) retractable in a cutter body, and a pusher (3) transversal to the body. The pusher transversally projects from the body when the blade is entered in the body, and is pushed in the body for leaving the blade. A rocker (4) and rod (5) transform the transversal movement of the pusher in longitudinal movement of the blade. The rocker and rod are arranged between the pusher and the blade. A button (12) and a blocking rocker (13) inhibit the operation of the pusher, where button is realized in a form of slider.

Description

La présente invention concerne un couteau de sécurité comportant un corps et une lame à sortie axiale du corps, automatiquement rétractable et comportant un poussoir de manoeuvre en saillie par rapport au corps.The present invention relates to a safety knife comprising a body and a blade with axial output of the body, automatically retractable and having a maneuvering pusher protruding from the body.

Les couteaux de sécurité comportent généralement une lame rentrant dans le corps du couteau pour éviter de blesser leur utilisateur quand ils ne sont pas en fonction et pouvoir être mis dans une poche ou un sac sans risque.The safety knives generally include a blade entering the body of the knife to avoid injuring their user when they are not in use and can be put in a pocket or bag safely.

Il est connu de munir de tels couteaux de dispositifs de manoeuvre de la lame coulissant longitudinalement sur le corps du couteau et peu susceptibles d'être actionnés accidentellement.It is known to provide such knives with maneuvering devices of the blade sliding longitudinally on the body of the knife and unlikely to be actuated accidentally.

Dans le cas de couteaux à lame rétractable automatiquement, lorsque l'on relâche le dispositif de manoeuvre, la lame rentre dans le corps du couteau sous l'action d'un ressort.In the case of automatically retractable blade knives, when releasing the operating device, the blade enters the body of the knife under the action of a spring.

Les opérateurs manoeuvrent le dispositif pour réaliser une coupe et le relâchent une fois cette coupe réalisée ce qui rétracte et sécurise la lame dans le corps du couteau.The operators manipulate the device to make a cut and release it once this cut is made which retracts and secures the blade in the body of the knife.

Les dispositifs longitudinaux sont en général positionnés sur le couteau pour être manoeuvrés avec le pouce et, dans le cas d'une utilisation intensive en atelier de réceptions de cartons à déballer par exemple, la succession répétée de mouvements de manoeuvre de la lame devient vite fatigante voire cause de pathologies telles que les tendinites.The longitudinal devices are generally positioned on the knife to be manipulated with the thumb and, in the case of intensive use in cardboard receiving workshop to unpack, for example, the repeated succession of movements of maneuvering the blade quickly becomes tiring even cause of pathologies such as tendonitis.

La présente invention se place dans le cadre de la réalisation d'un couteau plus ergonomique que les couteaux à dispositifs de manoeuvre longitudinaux et notamment de la réalisation d'un couteau dont le dispositif de manoeuvre, transversal par rapport au corps du couteau, peut se manoeuvrer à l'aide de plusieurs doigts dans un mouvement naturel de préhension du couteau et de serrage des doigts autour du corps du couteau.The present invention is placed in the context of producing a more ergonomic knife that knives with longitudinal operating devices and in particular the realization of a knife whose operating device, transverse to the body of the knife, can be maneuver using several fingers in a natural movement of gripping the knife and tightening the fingers around the body of the knife.

Pour ce faire le couteau de sécurité de la présente invention est pourvu d'un corps de couteau et d'une lame rétractable dans le corps et caractérisé en ce qu'il comporte un poussoir, transversal au corps du couteau, le poussoir dépassant transversalement du corps du couteau lorsque la lame est rentrée dans le corps du couteau et s'enfonçant dans le corps du couteau pour sortir la lame, et pourvu de moyens de transformation du mouvement transversal du poussoir en mouvement longitudinal de la lame disposés entre le poussoir et la lame.To do this, the safety knife of the present invention is provided with a knife body and a retractable blade in the body and characterized in that it comprises a pusher, transverse to the body of the knife, the pusher protruding transversely of the body of the knife when the blade is retracted into the body of the knife and sinking into the body of the knife to remove the blade, and provided with means for transforming the transverse movement of the pusher in longitudinal movement of the blade disposed between the pusher and the blade. blade.

Selon un premier mode de réalisation, le poussoir est disposé en partie inférieure du corps du couteau dans une zone médiane du corps du couteau, approximativement en regard de la position de l'index et/ou du majeur de l'opérateur.According to a first embodiment, the pusher is disposed in the lower part of the knife body in a median area of the knife body, approximately opposite the position of the index and / or major of the operator.

Selon un second mode de réalisation, le poussoir est disposé en partie supérieure du couteau et est actionnable avec la paume de l'opérateur.According to a second embodiment, the pusher is disposed in the upper part of the knife and is operable with the palm of the operator.

Avantageusement le couteau de l'invention comprend des moyens d'interdiction de manoeuvre du poussoir qui comportent préférentiellement un basculeur de blocage pourvu d'une extrémité distale qui comporte un épaulement venant retenir le poussoir en position de sortie du corps du couteau.Advantageously, the knife of the invention comprises means for preventing actuation of the pusher which preferably comprise a locking rocker provided with a distal end which comprises a shoulder for retaining the pusher in the output position of the knife body.

Selon un premier mode de réalisation le basculeur de blocage est manoeuvré par un bouton, disposé coulissant sur le corps du couteau, le bouton étant configuré pour entraîner en rotation le basculeur de blocage et libérer le poussoir lors de son coulissement.According to a first embodiment the blocking rocker is operated by a button, slidably disposed on the body of the knife, the button being configured to rotate the blocking rocker and release the pusher during its sliding.

Selon un second mode de réalisation, le basculeur de blocage est manoeuvré par un bouton poussoir l'entraînant en rotation.According to a second embodiment, the locking rocker is operated by a push button causing it to rotate.

D'autres caractéristiques et avantages de l'invention seront apparents à la lecture de la description qui suit d'un exemple de réalisation non limitatif d'un couteau selon l'invention en référence aux dessins qui représentent:

  • en figure 1: une vue de côté d'un couteau selon l'invention coque droite retirée et lame rentrée;
  • en figure 2: le couteau de la figure 1 lame sortie;
  • en figure 3: une vue en éclaté du couteau de la figure 1;
  • en figure 4: une vue en perspective éclatée du couteau de la figure 1;
  • en figure 5: une variante de couteau selon l'invention en vue de côté trappe d'accès à la lame retirée;
  • en figure 6: la variante de couteau de la figure 5 coque gauche retirée.
Other features and advantages of the invention will be apparent from the following description of a non-limiting embodiment of a knife according to the invention with reference to the drawings which show:
  • in figure 1 : a side view of a knife according to the invention right shell removed and blade retracted;
  • in figure 2 : the knife of the figure 1 blade outlet;
  • in figure 3 : an exploded view of the knife of the figure 1 ;
  • in figure 4 : an exploded perspective view of the knife of the figure 1 ;
  • in figure 5 : a knife variant according to the invention in side view hatch access to the blade removed;
  • in figure 6 : the knife variant of the figure 5 left hull removed.

Le couteau de sécurité représenté à la figure 1 est pourvu d'un corps de couteau 1 constituée de deux demi coques 1a, 1 b.The safety knife shown at figure 1 is provided with a knife body 1 consisting of two half-shells 1a, 1b.

Le corps renferme une lame 2 rétractable dans le corps et se manoeuvrant au moyen d'un poussoir 3, transversal au corps du couteau.
pour obtenir une bonne ergonomie et limiter la fatigue d'utilisation du couteau, le poussoir 3 qui a un mouvement transversal au corps du couteau, dépasse transversalement du corps du couteau lorsque la lame 2 est rentrée dans le corps du couteau 1 et s'enfonce dans le corps du couteau pour sortir la lame 2.The body contains a blade 2 retractable in the body and being operated by means of a pusher 3, transverse to the body of the knife.
to obtain a good ergonomics and limit the fatigue of use of the knife, the pusher 3 which has a transverse movement to the body of the knife, protrudes transversely of the body of the knife when the blade 2 is tucked into the body of the knife 1 and sinks in the knife body to remove the blade 2.

Selon l'exemple des figures 1 à 4, le poussoir 3 est disposé en partie inférieure du corps du couteau 1, dans une zone médiane du corps du couteau, approximativement en regard de la position de l'index et/ou du majeur de l'opérateur. La manoeuvre du poussoir se fait dans un mouvement naturel de préhension et de serrage des doigts sur le couteau et ne nécessite pas d'extension du pouce comme dans le cas des couteaux à curseur latéral ou supérieur.According to the example of Figures 1 to 4 , the pusher 3 is disposed in the lower part of the body of the knife 1, in a median area of the knife body, approximately opposite the position of the index and / or major of the operator. The operation of the pusher is in a natural movement of gripping and gripping of the fingers on the knife and does not require extension of the thumb as in the case of knives with side or upper slider.

La figure 1 représente le poussoir en position sortie au repos et la lame rentrée, la figure 2 représente le poussoir en position actionnée et la lame en position sortie suite à l'actionnement du poussoir.The figure 1 represents the pusher in the rest position at rest and the blade retracted, the figure 2 represents the pusher in the actuated position and the blade in the extended position following the actuation of the pusher.

En variante de la figure 5, le poussoir 3' est un poussoir rotatif disposé en partie supérieure du couteau et actionnable avec la paume de l'opérateur ce qui là encore correspond à une manoeuvre dans un sens naturel complétant la préhension du couteau.As a variant of the figure 5 , the pusher 3 'is a rotary pusher disposed in the upper part of the knife and operable with the palm of the operator which again corresponds to a maneuver in a natural sense completing the gripping of the knife.

La lame 2 est portée par un porte lame 6 plus particulièrement représenté à la figure 3.The blade 2 is carried by a blade holder 6 more particularly shown in FIG. figure 3 .

Le porte lame 6 comprend des glissières 19, 20 qui maintiennent la lame longitudinalement et comporte, pour la rétention de la lame, un pion 16 et un bossage 21 reçus dans des découpes 18, 22 de la lame ainsi qu'une languette d'appui 17 de sorte que la lame, guidée par les glissières se glisse sous la languette d'appui 17 et s'encliquette sur le pion 16 et le bossage 21.The blade holder 6 comprises slides 19, 20 which hold the blade longitudinally and comprises, for the retention of the blade, a pin 16 and a boss 21 received in cutouts 18, 22 of the blade and a support tongue 17 so that the blade, guided by the slides slides under the support tongue 17 and engages on the pin 16 and the boss 21.

Pour déplacer la lame longitudinalement dans le corps de couteau lorsque le poussoir est actionné, des moyens 4, 5, de transformation du mouvement transversal du poussoir 3 en mouvement longitudinal de la lame, sont disposés entre le poussoir et le porte lame 6 sur lequel est disposée la lame 2.To move the blade longitudinally in the knife body when the pusher is actuated, means 4, 5 for transforming the transverse movement of the pusher 3 in longitudinal movement of the blade, are arranged between the pusher and the blade holder 6 on which is arranged the blade 2.

Ces moyens de transformation plus particulièrement détaillés à la figure 3 comportent un basculeur 4 entraîné en rotation par le déplacement transversal du poussoir 3, le basculeur 4 poussant une biellette 5 de sorte que le porte lame est manoeuvré par le poussoir 3 au travers du basculeur 4 et de la biellette 5.These means of transformation more particularly detailed at the figure 3 comprise a rocker 4 rotated by the transverse displacement of the pusher 3, the rocker 4 pushing a link 5 so that the blade holder is operated by the pusher 3 through the rocker 4 and the rod 5.

Le basculeur 4 est monté rotatif sur un premier axe 8, porté par une coque 1a du corps et reçu dans un logement 25 du basculeur 4.The rocker 4 is rotatably mounted on a first axis 8, carried by a shell 1a of the body and received in a housing 25 of the rocker 4.

Le basculeur comporte un deuxième axe 9, d'entraînement en rotation du basculeur par le poussoir qui comporte un chemin de came 15 dans lequel est reçu le deuxième axe 9.The rocker comprises a second axis 9, rotational drive of the rocker by the pusher which comprises a cam path 15 in which is received the second axis 9.

Pour réaliser la liaison avec la biellette 5, le basculeur comporte un logement 10, de réception d'un troisième axe 11 disposé sur la biellette, le troisième axe réalisant une articulation permettant la poussée de la biellette par le basculeur lors de la rotation du basculeur.To make the connection with the rod 5, the rocker comprises a housing 10, for receiving a third axis 11 disposed on the rod, the third axis providing a hinge allowing the thrust of the rod by the rocker during the rotation of the rocker .

En sorte d'amplifier la course de la biellette 5 par rapport à la course du poussoir 3, de façon à ce qu'une faible course du poussoir permette une sortie importante de la lame, la distance entre le premier 8 et le deuxième 9 des axes est inférieure à la distance entre le premier 8 et le troisième 11 des axes.In order to amplify the stroke of the rod 5 relative to the stroke of the pusher 3, so that a short stroke of the pusher allows a large output of the blade, the distance between the first 8 and second 9 of axes is less than the distance between the first 8 and the third 11 of the axes.

Le porte lame 6 est rappelé par un ressort 7, dans une direction de rentrée de la lame dans le corps.The blade holder 6 is biased by a spring 7, in a direction of retraction of the blade into the body.

Selon l'exemple de la figure 3, le ressort 7 s'accroche sur un tenon 23 du basculeur et un tenon 24 du corps et travaille en extension lorsque la lame est sortie du corps.According to the example of the figure 3 , the spring 7 clings to a pin 23 of the rocker and a stud 24 of the body and works in extension when the blade is out of the body.

La figure 4 représente les pièces du dispositif de manoeuvre de la lame en perspective et en prises les unes avec les autres pour représenter la chaîne cinématique entre le poussoir et le porte lame.The figure 4 represents the parts of the blade operating device in perspective and engaged with each other to represent the kinematic chain between the pusher and the blade holder.

Sur cette figure, il est particulièrement visible que l'on peut faire varier la courbure que l'on donne au corps du couteau pour le rendre ergonomique tout en conservant le même mécanisme de sortie de la lame.In this figure, it is particularly visible that one can vary the curvature that is given to the knife body to make it ergonomic while maintaining the same output mechanism of the blade.

Ceci est possible du fait de la double articulation de la biellette 5, d'une part sur le basculeur 4 et d'autre part sur le porte lame 6, l'axe de déplacement du porte lame pouvant ainsi être modifié.This is possible because of the double articulation of the link 5, on the one hand on the rocker 4 and on the other hand on the blade holder 6, the axis of displacement of the blade holder can thus be modified.

Un inconvénient du couteau de la présente invention est que le mouvement du poussoir se faisant transversalement par rapport à l'axe longitudinal du corps du couteau, un appui accidentel sur le poussoir est possible, par exemple lorsque l'opérateur met son couteau dans une poche.A disadvantage of the knife of the present invention is that the movement of the pusher being transversely to the longitudinal axis of the knife body, an accidental pressing on the pusher is possible, for example when the operator puts his knife in a pocket .

Un tel appui peut conduire à une sortie intempestive de la lame.Such support may lead to an inadvertent release of the blade.

Pour éviter les risques de sortie intempestive de la lame, un mode de réalisation particulier de l'invention prévoit des moyens 12, 13, 32, 33 d'interdiction de manoeuvre du poussoir 3.
les moyens d'interdiction de manoeuvre comportent un basculeur de blocage 13, 33 pourvu d'une extrémité distale qui comporte un épaulement 35 venant retenir le poussoir 3, 3' en position de sortie du corps du couteau.To avoid the risk of inadvertent release of the blade, a particular embodiment of the invention provides means 12, 13, 32, 33 for prohibiting operation of the pusher 3.
the maneuvering prohibition means comprise a locking rocker 13, 33 provided with a distal end which comprises a shoulder 35 holding the pusher 3, 3 'in the output position of the knife body.

Selon l'exemple des figures 1 à 4 le basculeur de blocage 13 est manoeuvré par un bouton 12, disposé coulissant sur le corps du couteau, le bouton 12 étant configuré pour entraîner en rotation le basculeur de blocage 13 et libérer le poussoir lors de son coulissement.According to the example of Figures 1 to 4 the blocking rocker 13 is operated by a button 12, slidably disposed on the body of the knife, the button 12 being configured to rotate the blocking rocker 13 and release the pusher during its sliding.

Un ressort 14 est disposé entre le corps et les moyens d'interdiction de manoeuvre pour rappeler le bouton 12 et le basculeur de blocage 13 en position de retenue du poussoir.A spring 14 is disposed between the body and the operating prohibition means for biasing the button 12 and the blocking rocker 13 in the pusher retaining position.

Le bouton 12, est réalisé sous la forme d'un glisseur disposé coulissant sur le corps du couteau et pouvant être manoeuvré par coulissement le long du corps du couteau.The button 12, is in the form of a slider slidably disposed on the body of the knife and can be slidably operated along the body of the knife.

Le bouton coulissant représenté en position de repos en figure 1 et en position avancée en figure 2 se manoeuvre avec le pouce dans le cas de l'exemple des figures 1 et 2.The slide button represented in the rest position figure 1 and in advanced position in figure 2 is maneuvered with the thumb in the case of the example of Figures 1 and 2 .

Le bouton 12 agit, lorsqu'il est poussé, sur un basculeur de blocage 13 pourvu d'une extrémité distale de retenue du poussoir 3 en position sortie du corps.The button 12 acts, when pushed, on a blocking rocker 13 provided with a distal retaining end of the pusher 3 in the extended position of the body.

Le bouton 12 adapté à coulisser sur le corps est configuré pour entraîner en rotation le basculeur de blocage 13 et libérer le poussoir.The button 12 adapted to slide on the body is configured to rotate the blocking rocker 13 and release the pusher.

Pour ramener le bouton 12 en position de repos et ramener le basculeur de blocage 13 en position de blocage du poussoir, les moyens d'interdiction de manoeuvre comportent un ressort 14 qui est disposé entre le corps et les moyens d'interdiction de manoeuvre pour rappeler le bouton coulissant 12 et le basculeur de blocage 13 en position de retenue du poussoir.To return the button 12 to the rest position and return the blocking lever 13 to the blocking position of the pusher, the maneuvering prohibition means comprise a spring 14 which is arranged between the body and the maneuver prohibition means to recall the sliding knob 12 and the locking rocker 13 in the retaining position of the pusher.

Selon l'exemple et en particulier la figure 1, le ressort se fixe entre un tenon 26 du corps du couteau et un crochet 27 porté par une extension du bouton.According to the example and in particular the figure 1 , the spring is fixed between a pin 26 of the knife body and a hook 27 carried by an extension of the button.

L'articulation entre le bouton 12 et le basculeur de blocage 13 se fait entre un pion 28 et un chemin de came 29 plus particulièrement représentés en figure 4, le basculeur de blocage 13 étant monté mobile en rotation sur un axe 30 du corps de couteau comme représenté en figure 3.The articulation between the button 12 and the blocking rocker 13 is between a pin 28 and a cam track 29 more particularly represented in FIG. figure 4 , the locking rocker 13 being rotatably mounted on an axis 30 of the knife body as shown in FIG. figure 3 .

Lorsque le poussoir 3 est en position sortie, le basculeur de blocage 13 comporte un épaulement en prise avec la face interne du poussoir et lorsque le bouton est manoeuvré par coulissement, l'épaulement s'efface laissant libre le passage du poussoir vers l'intérieur du corps du couteau.When the pusher 3 is in the extended position, the blocking rocker 13 has a shoulder engaged with the inner face of the pusher and when the button is slidably operated, the shoulder disappears leaving free passage of the pusher inwards of the body of the knife.

Si le bouton coulissant est relâché alors que le poussoir est enfoncé, le basculeur de blocage bute contre une face latérale du poussoir et, dès que le poussoir est relâché, le basculeur de blocage revient en position de blocage du poussoir.If the slide button is released while the pusher is depressed, the blocking rocker abuts against a side face of the pusher and, as soon as the pusher is released, the blocking rocker returns to the blocking position of the pusher.

Ce principe assure le blocage du poussoir dès que l'opération de coupe est terminée et que la lame est rentrée dans le corps de couteau ce qui procure une grande sécurité au couteau de l'invention.This principle ensures the blocking of the pusher as soon as the cutting operation is completed and the blade is retracted into the knife body which provides great safety to the knife of the invention.

En variante figure 6, les moyens d'interdiction de manoeuvre ne comportent pas de bouton coulissant mais comportent un bouton poussoir 32 entraînant en rotation un basculeur de blocage 33 pourvu d'une extrémité distale de retenue du poussoir 3' en position sortie du corps.Alternatively figure 6 , the maneuvering prohibition means do not comprise a sliding button but comprise a push button 32 rotating a blocking rocker 33 provided with a distal retaining end of the pusher 3 'in the extended position of the body.

Selon cet exemple, un lien ressort 34 relie le bouton poussoir 32 au basculeur de blocage 33 qui, comme dans l'exemple des figures 1 à 4 comporte un épaulement venant retenir le poussoir 3' en position de sortie du corps de couteau.According to this example, a spring link 34 connects the push button 32 to the blocking rocker 33 which, as in the example of the Figures 1 to 4 has a shoulder to retain the pusher 3 'in the output position of the knife body.

Le lien ressort 34 tout comme le ressort 14 exerce une force de rappel sur le bouton poussoir 32 et sur le basculeur de blocage 33 pour les rappeler en position de blocage du poussoir 3'.The spring link 34 just as the spring 14 exerts a restoring force on the push button 32 and on the blocking rocker 33 to return them to the blocking position of the pusher 3 '.

L'invention ne se limite pas aux exemples représentés et englobe toute variante restant dans le champ des revendications.The invention is not limited to the examples shown and encompasses any variant remaining within the scope of the claims.

En particulier la position des moyens d'interdiction de manoeuvre de l'exemple de la figure 6 peuvent être positionnés sur une partie inférieure du couteau pour être manoeuvrés d'un doigt.In particular the position of the maneuvering means of the example of the figure 6 can be positioned on a lower part of the knife to be manipulated with a finger.

Claims (11)

Couteau de sécurité pourvu d'un corps de couteau (1) et d'une lame (2) rétractable dans le corps, comportant un poussoir (3, 3'), transversal au corps du couteau, le poussoir (3, 3') dépassant transversalement du corps du couteau lorsque la lame (2) est rentrée dans le corps du couteau (1) et s'enfonçant dans le corps du couteau pour sortir la lame (2), et des moyens (4, 5), de transformation du mouvement transversal du poussoir (3, 3') en mouvement longitudinal de la lame, disposés entre le poussoir et la lame, caractérisé en ce qu'il comprend des moyens (12, 13, 32, 33) d'interdiction de manoeuvre du poussoir (3, 3'), les moyens d'interdiction de manoeuvre comportant un basculeur de blocage (13, 33) pourvu d'une extrémité distale qui comporte un épaulement (35) adapté à retenir le poussoir (3') en position sortie du corps du couteau.Safety knife provided with a knife body (1) and a blade (2) retractable in the body, comprising a pusher (3, 3 '), transverse to the knife body, the pusher (3, 3') protruding transversely of the knife body when the blade (2) is retracted into the knife body (1) and sinking into the knife body to remove the blade (2), and transformation means (4, 5) transverse movement of the pusher (3, 3 ') in longitudinal movement of the blade, arranged between the pusher and the blade, characterized in that it comprises means (12, 13, 32, 33) for prohibiting operation of the pusher (3, 3 '), the maneuver prohibition means comprising a locking rocker (13, 33) provided with a distal end which comprises a shoulder (35) adapted to retain the pusher (3') in the extended position of the body of the knife. Couteau de sécurité selon la revendication 1 pour lequel le poussoir (3) est disposé en partie inférieure du corps du couteau (1), dans une zone médiane du corps du couteau, approximativement en regard de la position de l'index et/ou du majeur de l'opérateur.Safety knife according to claim 1 wherein the pusher (3) is arranged in the lower part of the knife body (1), in a central region of the knife body, approximately opposite the position of the index and / or the major of the operator. Couteau de sécurité pour lequel le poussoir (3) est disposé en partie supérieure du couteau et est actionnable avec la paume de l'opérateur.Safety knife for which the pusher (3) is disposed in the upper part of the knife and is operable with the palm of the operator. Couteau de sécurité selon l'une des revendications précédentes pour lequel la lame (2) est portée par un porte lame (6).Safety knife according to one of the preceding claims for which the blade (2) is carried by a blade holder (6). Couteau de sécurité selon la revendication 4 pour lequel le porte lame (6) est rappelé par un ressort (7), dans une direction de rentrée de la lame dans le corps.Safety knife according to claim 4 wherein the blade holder (6) is biased by a spring (7) in a direction of retraction of the blade into the body. Couteau de sécurité selon la revendication 4 ou 5 pour lequel le porte lame est manoeuvré par le poussoir (3) au travers d'un basculeur (4) et d'une biellette (5).Safety knife according to claim 4 or 5 for which the blade holder is operated by the pusher (3) through a rocker (4) and a rod (5). Couteau de sécurité selon la revendication 6 pour lequel le basculeur (4) est monté rotatif sur un premier axe (8) porté par une coque (1a) du corps et reçu dans un logement (25) du basculeur (4), comporte un deuxième axe (9), d'entraînement en rotation du basculeur par le poussoir, le basculeur comportant un logement (10), de réception d'un troisième axe (11), de poussée de la biellette, la distance entre le premier (8) et le deuxième (9) des axes étant inférieure à la distance entre le premier (8) et le troisième (11) des axes en sorte d'amplifier la course de la biellette (5) par rapport à la course du poussoir (3).Safety knife according to claim 6 wherein the rocker (4) is rotatably mounted on a first axis (8) carried by a shell (1a) of the body and received in a housing (25) of the rocker (4) comprises a second axis (9) for rotating the rocker by the pusher, the rocker comprising a housing (10), for receiving a third axis (11), for pushing the rod, the distance between the first (8) and the second (9) of the axes being less than the distance between the first (8) and third (11) of the axes so as to amplify the stroke of the rod (5) relative to the stroke of the pusher (3). Couteau de sécurité selon l'une des revendications précédentes caractérisé en ce que le basculeur de blocage (13) est manoeuvré par un bouton (12), disposé coulissant sur le corps du couteau, le bouton (12) étant configuré pour entraîner en rotation le basculeur de blocage (13) et libérer le poussoir lors de son coulissement.Safety knife according to one of the preceding claims, characterized in that the locking rocker (13) is operated by a knob (12) slidably arranged on the body of the knife, the knob (12) being configured to drive in rotation the locking rocker (13) and release the pusher during its sliding. Couteau de sécurité selon l'une des revendications précédentes pour lequel un ressort (14) est disposé entre le corps et les moyens d'interdiction de manoeuvre pour rappeler le bouton (12) et le basculeur de blocage (13) en position de retenue du poussoir.Safety knife according to one of the preceding claims for which a spring (14) is arranged between the body and the maneuver prohibition means for biasing the button (12) and the locking rocker (13) in the retaining position of the button. Couteau de sécurité selon l'une des revendications précédentes pour lequel le basculeur de blocage (33) est pourvu d'une extrémité distale de retenue du poussoir (3') en position sortie du corps et manoeuvré par un bouton poussoir (32) l'entraînant en rotation.Safety knife according to one of the preceding claims wherein the locking rocker (33) is provided with a distal retaining end of the pusher (3 ') in the extended position of the body and operated by a push button (32) the driving in rotation. Couteau de sécurité selon la revendication 10 pour lequel un lien ressort (34) relie le bouton poussoir (32) au basculeur de blocage (33) et rappelle ces derniers en position de blocage du poussoir (3').Safety knife according to claim 10 for which a spring link (34) connects the push button (32) to the locking rocker (33) and remembers them in the blocking position of the pusher (3 ').
EP08102013.3A 2007-02-27 2008-02-26 Safety knife Active EP1964652B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0753537A FR2912945B1 (en) 2007-02-27 2007-02-27 SAFETY KNIFE

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EP1964652A1 true EP1964652A1 (en) 2008-09-03
EP1964652B1 EP1964652B1 (en) 2011-03-23
EP1964652B2 EP1964652B2 (en) 2016-08-17

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EP08102013.3A Active EP1964652B2 (en) 2007-02-27 2008-02-26 Safety knife

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EP (1) EP1964652B2 (en)
AT (1) ATE502737T1 (en)
DE (1) DE602008005657D1 (en)
FR (1) FR2912945B1 (en)

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FR2956341A1 (en) * 2010-02-15 2011-08-19 Mure Et Peyrot SAFETY KNIFE
CN102335920A (en) * 2010-07-16 2012-02-01 上海昆杰五金工具有限公司 Cutting knife capable of increasing effective using length of blade
EP2433732A1 (en) 2010-09-27 2012-03-28 HOLZMA Plattenaufteiltechnik GmbH Board partitioning device and method for operating same
EP2979828A1 (en) 2014-07-31 2016-02-03 Mure et Peyrot Knife with blade exit controlled by actuating pusher and pinions

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US20040237312A1 (en) 2003-05-22 2004-12-02 Hector Hernandez Knife with trigger actuator for retractable blade
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US5890294A (en) † 1997-01-24 1999-04-06 P.S.I., Inc. Locking safety utility knife
US6813833B2 (en) † 2002-01-16 2004-11-09 Nottingham-Spirk Design Associates, Inc. Utility knife

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US20040237312A1 (en) 2003-05-22 2004-12-02 Hector Hernandez Knife with trigger actuator for retractable blade
DE202005003197U1 (en) * 2005-02-28 2005-07-21 Ho, Chun-Feng Utility knife, with a cutting blade which can be extended through an opening in the housing, has two compartments with sets of reserve blades to replace worn cutting blades

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2956341A1 (en) * 2010-02-15 2011-08-19 Mure Et Peyrot SAFETY KNIFE
EP2359990A1 (en) * 2010-02-15 2011-08-24 Mure et Peyrot Safety knife
CN102335920A (en) * 2010-07-16 2012-02-01 上海昆杰五金工具有限公司 Cutting knife capable of increasing effective using length of blade
EP2433732A1 (en) 2010-09-27 2012-03-28 HOLZMA Plattenaufteiltechnik GmbH Board partitioning device and method for operating same
DE102010041486A1 (en) 2010-09-27 2012-03-29 Holzma Plattenaufteiltechnik Gmbh Panel dividing plant and method for its operation
EP2979828A1 (en) 2014-07-31 2016-02-03 Mure et Peyrot Knife with blade exit controlled by actuating pusher and pinions

Also Published As

Publication number Publication date
ATE502737T1 (en) 2011-04-15
DE602008005657D1 (en) 2011-05-05
EP1964652B2 (en) 2016-08-17
FR2912945A1 (en) 2008-08-29
FR2912945B1 (en) 2009-11-27
EP1964652B1 (en) 2011-03-23

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