EP0487939B1 - Can opener - Google Patents
Can opener Download PDFInfo
- Publication number
- EP0487939B1 EP0487939B1 EP91118756A EP91118756A EP0487939B1 EP 0487939 B1 EP0487939 B1 EP 0487939B1 EP 91118756 A EP91118756 A EP 91118756A EP 91118756 A EP91118756 A EP 91118756A EP 0487939 B1 EP0487939 B1 EP 0487939B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drive shaft
- motor
- drive
- rotation
- wheel
- 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.)
- Expired - Lifetime
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67B—APPLYING CLOSURE MEMBERS TO BOTTLES JARS, OR SIMILAR CONTAINERS; OPENING CLOSED CONTAINERS
- B67B7/00—Hand- or power-operated devices for opening closed containers
- B67B7/40—Devices for engaging tags, strips, or tongues for opening by tearing, e.g. slotted keys for opening sardine tins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67B—APPLYING CLOSURE MEMBERS TO BOTTLES JARS, OR SIMILAR CONTAINERS; OPENING CLOSED CONTAINERS
- B67B7/00—Hand- or power-operated devices for opening closed containers
- B67B7/38—Power-operated cutting devices
Definitions
- the invention relates to a can opener of the type comprising, in a housing, an electric motor capable of driving in rotation, by means of at least one toothed wheel, a drive shaft of which one end projects. transversely to the front wall of the housing and carries a roller comprising a drive zone intended to come into contact with the crimping flange of a box, as well as a cutting wheel which is mounted idly around an axis disposed transversely to the drive shaft and a cutting sector of which protrudes from said front wall practically opposite said wheel drive zone and is intended to cut out said bead, said drive shaft being mounted both rotating and axially movable in the housing by means, on the one hand, of a bi-directional driving mechanism comprising a compression spring threaded on the drive shaft, and, on the other hand, of a device for reversing the direction of rotation of the drive shaft.
- Document DE-U-90 03 115 describes such a can opener in which the bi-directional driving mechanism and the device for reversing the direction of rotation of the drive shaft cooperate with each other by means a set of gears adapted so that the caster can occupy, i.e. a rest position for which it allows the insertion or removal of the box, a working position for which it applies the bead of the box against said wheel.
- the set of gears used for this can opener constitutes a complex mechanical assembly, which makes it difficult to produce the can opener.
- the reversing device consists of an electric circuit which fulfills the function of reversing the direction of rotation of the motor and delaying the time elapsing between the command by the user shifting the engine into reverse and stopping the engine. The time delay is ensured by an electric circuit connected to the motor supply circuit.
- the compression spring of the bi-directional driving mechanism has the function of causing a translation of the caster so either to introduce the bead of the box between the caster and the front wheel opening or to remove it after opening, or to keep the bead against the wheel during opening.
- the object of the invention is to produce a can opener of the type mentioned above which is of simplified design.
- the drive shaft is automatically driven in the opposite direction, thus causing the progressive tightening of the turns around the shaft and after a while the contact between the free end of the spring and the switch which cuts the power supply to the motor.
- the compression spring does not show any wear since the tightening is modulated according to the direction of rotation.
- FIG. 1 shows a schematic section of a can opener according to the invention
- FIG. 2 represents a partial perspective view illustrating the compression spring of which the free end is in the stop position on the stop switch
- Figure 3 is a schematic view of the compression spring in the stop position
- FIG. 4 represents the electrical diagram of the reversing device according to the invention.
- the can opener shown in Figure 1 comprises, in a housing 1, an electric motor (shown schematically at 2 in Figure 4) capable of driving in rotation, via at least one toothed wheel 3, a drive shaft 4, one end of which projects transversely from a front wall 5 of the housing 1 and carries a roller 7 comprising a drive zone 8 intended to come into contact with the upper internal lateral region of the crimping bead of the cover a box (not shown), as well as a cutting wheel 9 which is mounted idly around an axis 10 disposed transversely to the drive shaft 4 and of which a cutting sector 11 projects from said front wall 5 practically opposite of said drive zone 8 of the roller 7 and is intended to cut the external lateral region of said bead.
- an electric motor shown schematically at 2 in Figure 4
- a drive shaft 4 capable of driving in rotation, via at least one toothed wheel 3
- a drive shaft 4 one end of which projects transversely from a front wall 5 of the housing 1 and carries a roller 7 comprising a
- the drive shaft 4 is mounted both rotatably and axially movable in the housing 1 by means of a bidirectional drive mechanism which comprises a lug 12, integral with the drive shaft 4 and capable of moving along an inclined lumen 13 (shown in dashed lines) formed on the toothed wheel 3, as well as a compression coil spring 14 preferably made of steel threaded on the drive shaft 4 and supported by its ends, d on the one hand, on a rear wall 6 of the housing 1 and, on the other hand, on the toothed wheel 3.
- a bidirectional drive mechanism which comprises a lug 12, integral with the drive shaft 4 and capable of moving along an inclined lumen 13 (shown in dashed lines) formed on the toothed wheel 3, as well as a compression coil spring 14 preferably made of steel threaded on the drive shaft 4 and supported by its ends, d on the one hand, on a rear wall 6 of the housing 1 and, on the other hand, on the toothed wheel 3.
- washers 15, of the Belleville type are interposed between the toothed wheel 3 and the front wall 5 of the housing 1 in a manner known per se.
- the lug 12 can drive the shaft 4 in rotation and in translation so that the drive shaft 4 can occupy, in the direction of rotation of said wheel 3, is an inactive position ( Figure 1) for which the caster 7 is moved away from the wheel 9 so as to allow the engagement or disengagement of the bead from the box, ie an active position (not shown) for which the caster 7 is brought closer to the wheel 9 so as to come into engagement with the bead and allow the cutting of the external lateral region of said bead.
- Figure 1 for which the caster 7 is moved away from the wheel 9 so as to allow the engagement or disengagement of the bead from the box
- an active position not shown
- the compression spring 14 is chosen so as to exert an axial compression force large enough to oppose the rise of the lug 12 along the lumen 13 when the caster 7 rotates in a vacuum, thus maintaining the shaft drive 4 in its inactive position (Figure 1), and low enough to allow the lug 12 to rise along the lumen 13, when the drive area 8 of the roller 7 is in contact with the bead of a box, thus maintaining the drive shaft 4 in its active position.
- the can opener further comprises a device for reversing the direction of rotation of the drive shaft 4 comprising two electrical switches 16, 17, a so-called switch of operation 16 and a so-called stop switch 17, which are mounted in the motor supply circuit so as to swap the connection connections of said motor 2 to reverse its direction of rotation, so that the motor 2 can take , via a control button 18 actuated by the user, two states, either a "forward" state for which the roller 7 applies the bead of the box against the wheel 9, or a "reverse” state "for which the roller 7 allows the insertion or removal of the box.
- a device for reversing the direction of rotation of the drive shaft 4 comprising two electrical switches 16, 17, a so-called switch of operation 16 and a so-called stop switch 17, which are mounted in the motor supply circuit so as to swap the connection connections of said motor 2 to reverse its direction of rotation, so that the motor 2 can take , via a control button 18 actuated by the user, two states, either a "forward" state for which the roller 7 applies
- the electric motor 2 shown diagrammatically in FIG. 4, is a collector series motor which is connected to terminals A and B of an AC voltage sector and whose armature windings can, for example, be swapped in a manner known per se, so as to allow the motor to rotate in both meaning.
- the compression spring 14 comprises two parts, a cylindrical part 19 with contiguous turns whose internal surfaces 20 are frictionally mounted on the drive shaft 4 and a frustoconical part 21 with non-contiguous turns whose free end 22 is capable of come occupy two positions, either a rest position (shown in broken lines in Figures 2 and 3) for which it is in abutment against a finger 23 arranged on the rear wall 6 of the housing 1, or a working position (shown in solid lines in FIGS.
- the spring 14 having a winding direction such that, when motor 2 occupies its "forward” state, the turns of the cylindrical part 19 of the spring 14 slip on the drive shaft 4 so that the free end 22 is brought into the rest position, while, when the m otor 2 occupies its "reverse” state, the turns of the cylindrical part 19 are clamped on the drive shaft 4 so as to drive the free end 22 of the frustoconical part 21 towards its working position.
- the control button 18 can occupy two positions, a depressed position (shown in dashed lines in FIG.
- Each switch 16, 17 can each occupy two states, a state called “low” (shown in solid lines in Figure 4) and a state called “high” (shown in broken lines in Figure 4).
- the run switch 16 has been chosen to so that its "high” state corresponds to a non-actuation of its key while the stop switch 17 has been chosen so that its "high” state corresponds to the actuation of its key.
- control button 18 In an initial step, the control button 18 is in the released position (solid lines in Figure 2), the on and off switches 16 are in their "high” state (broken lines in Figure 4); engine 2 is stopped. The spring is tightened on the drive shaft 4.
- a "forward” step the user inserts the bead of the box between the wheel 9 and the roller 7 and then starts the device.
- the button 18 then presses the key of the on switch 16, which changes to its "low” state (solid lines in FIG. 4) and maintains the stop switch 17 in its “high” state.
- the lug 12 rises along the light 13 against the axial force exerted by the spring of compression 14, which brings the shaft 4 into translation in the active position, the lug 12 then drives the shaft 4 in rotation, thus allowing the cutting of the bead.
- the spring clamped on the shaft by its cylindrical part 19 will be rotated by the shaft until the free end 22 abuts against the finger 23. At this stage, by friction, the movement will tend to open the turns of the spring, it will not oppose significant force to the rotation of the shaft.
- the spring is driven by the shaft 4 due to the direction of winding chosen so that the cylindrical part 19 of the spring is tightened all the more strongly that one opposes the movement.
- the free end of the frustoconical part is therefore rotated until it comes into contact with the button of the stop switch 17, which changes state and then occupies its "low” state.
- the engine power is cut, we find our at the initial stage.
- an angular distance between the finger 23 and the button of the stop switch 17 is chosen of approximately 45 °; the time elapsing between the reversal of the direction of rotation of the motor 2 and the interruption of the supply is approximately one second.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lock And Its Accessories (AREA)
- Devices For Opening Bottles Or Cans (AREA)
- Glass Compositions (AREA)
- Control And Other Processes For Unpacking Of Materials (AREA)
- Catching Or Destruction (AREA)
- Table Devices Or Equipment (AREA)
Abstract
Description
L'invention se rapporte à un ouvre-boîtes du type comprenant, dans un boîtier, un moteur électrique susceptible d'entraîner en rotation, par l'intermédiaire d'au moins une roue dentée, un arbre d'entraînement dont une extrémité fait saillie transversalement à la paroi avant du boîtier et porte une roulette comportant une zone d'entraînement destinée à venir en contact avec le bourrelet de sertissage d'une boîte, ainsi qu'une molette coupante qui est montée folle autour d'un axe disposé transversalement à l'arbre d'entraînement et dont un secteur tranchant fait saillie de ladite paroi avant pratiquement en regard de ladite zone d'entraînement de la roulette et est destiné à venir découper ledit bourrelet, ledit arbre d'entraînement étant monté à la fois rotatif et mobile axialement dans le boîtier au moyen, d'une part, d'un mécanisme entraîneur bi-directionnel comportant un ressort de compression enfilé sur l'arbre d'entraînement, et, d'autre part, d'un dispositif d'inversion du sens de rotation de l'arbre d'entraînement.The invention relates to a can opener of the type comprising, in a housing, an electric motor capable of driving in rotation, by means of at least one toothed wheel, a drive shaft of which one end projects. transversely to the front wall of the housing and carries a roller comprising a drive zone intended to come into contact with the crimping flange of a box, as well as a cutting wheel which is mounted idly around an axis disposed transversely to the drive shaft and a cutting sector of which protrudes from said front wall practically opposite said wheel drive zone and is intended to cut out said bead, said drive shaft being mounted both rotating and axially movable in the housing by means, on the one hand, of a bi-directional driving mechanism comprising a compression spring threaded on the drive shaft, and, on the other hand, of a device for reversing the direction of rotation of the drive shaft.
Le document DE-U-90 03 115 décrit un tel ouvre-boîtes dans lequel le mécanisme entraîneur bi-directionnel et le dispositif d'inversion du sens de rotation de l'arbre d'entraînement coopèrent l'un avec l'autre au moyen d'un jeu d'engrenages adaptés de manière que la roulette puisse occuper, soit une position de repos pour laquelle elle permet l'insertion ou l'enlèvement de la boîte, soit une position de travail pour laquelle elle applique le bourrelet de la boîte contre ladite molette. Le jeu d'engrenages utilisé pour cet ouvre-boîtes constitue un montage mécanique complexe, ce qui rend difficile la réalisation de l'ouvre-boîtes.Document DE-U-90 03 115 describes such a can opener in which the bi-directional driving mechanism and the device for reversing the direction of rotation of the drive shaft cooperate with each other by means a set of gears adapted so that the caster can occupy, i.e. a rest position for which it allows the insertion or removal of the box, a working position for which it applies the bead of the box against said wheel. The set of gears used for this can opener constitutes a complex mechanical assembly, which makes it difficult to produce the can opener.
Par ailleurs, la Demanderesse connaissait un ouvre-boîtes du type défini ci-dessus, d'après ses propres demandes de brevet français N° 89 16203 et N° 89 16043 correspondant respectivement aux documents EP-A-431 516 et EP-A-431 517, lesquels ont été déposés et publiés antérieurement au dépôt de la présente demande mais postérieurement au dépôt prioritaire de la présente demande dont la priorité a été valablement revendiquée et de ce fait ne sont pas compris dans l'état de la technique.Furthermore, the Applicant knew of a can opener of the type defined above, according to its own French patent applications N ° 89 16203 and N ° 89 16043 corresponding respectively to documents EP-A-431 516 and EP-A- 431,517, which were filed and published prior to the filing of this application but after the priority filing of this application whose priority has been validly claimed and therefore are not included in the state of the art.
D'après le document EP-A-431 516, le dispositif d'inversion est constitué par un circuit électrique qui remplit la fonction d'inversion du sens de rotation du moteur et de temporisation de la durée s'écoulant entre la commande par l'usager faisant passer le moteur en marche arrière, et l'arrêt du moteur. La temporisation est assurée par un circuit électrique branché sur le circuit d'alimentation du moteur. D'après le document EP-A-431 517, le ressort de compression du mécanisme entraîneur bi-directionnel a pour fonction de provoquer une translation de la roulette de façon, soit à introduire le bourrelet de la boîte entre la roulette et la molette avant ouverture ou à le retirer après ouverture, soit à maintenir le bourrelet contre la molette pendant l'ouverture.According to document EP-A-431 516, the reversing device consists of an electric circuit which fulfills the function of reversing the direction of rotation of the motor and delaying the time elapsing between the command by the user shifting the engine into reverse and stopping the engine. The time delay is ensured by an electric circuit connected to the motor supply circuit. According to document EP-A-431 517, the compression spring of the bi-directional driving mechanism has the function of causing a translation of the caster so either to introduce the bead of the box between the caster and the front wheel opening or to remove it after opening, or to keep the bead against the wheel during opening.
L'invention a pour but de réaliser un ouvre-boîtes du type rappelé ci-dessus qui soit de conception simplifiée.The object of the invention is to produce a can opener of the type mentioned above which is of simplified design.
Selon l'invention, un ouvre-boîtes du type décrit précédemment, est plus particulièrement caractérisé en ce que :
- le dispositif d'inversion du sens de rotation de l'arbre d'entraînement comporte deux commutateurs électriques, un commutateur dit de marche et un commutateur dit d'arrêt, qui sont montés dans le circuit d'alimentation du moteur de manière à permuter les connexions de branchement dudit moteur pour inverser son sens de rotation, de telle sorte que le moteur puisse prendre, par l'intermédiaire d'un bouton de commande actionné par l'usager, deux états, soit un état "marche avant" pour lequel la roulette applique le bourrelet de la boîte contre la molette, soit un état "marche arrière" pour lequel la roulette permet l'insertion ou l'enlèvement de la boîte,
- le ressort de compression du mécanisme entraîneur bidirectionnel prend appui à la fois sur la paroi arrière du boîtier et sur la roue dentée, et présente deux parties, à savoir une partie cylindrique à spires jointives dont les surfaces internes sont montées en friction sur l'arbre d'entraînement et une partie tronconique à spires non jointives dont une extrémité libre est susceptible de venir occuper deux positions, soit une position de repos pour laquelle elle est en butée contre un doigt agencé sur la paroi arrière du boîtier, soit une position de travail pour laquelle elle appuie sur le commutateur d'arrêt, de manière à couper l'alimentation du moteur, le ressort ayant un sens d'enroulement tel que, lorsque le moteur occupe son état "marche avant", les spires de la partie cylindrique du resort patinent sur l'arbre d'entraînement de manière que l'extrémité libre soit amenée en position de repos, tandis que, lorsque le moteur occupe son état "marche arrière", les spires de la partie cylindrique sont serrées sur l'arbre d'entraînement de manière à entraîner l'extrémité libre de la partie tronconique vers sa position de travail.
- the device for reversing the direction of rotation of the shaft drive comprises two electrical switches, a so-called on switch and a so-called stop switch, which are mounted in the motor supply circuit so as to swap the connection connections of said motor to reverse its direction of rotation, so that the motor can take, via a control button actuated by the user, two states, either a "forward" state for which the wheel applies the bead of the box against the wheel, or a "reverse" state for which the wheel allows the insertion or removal of the box,
- the compression spring of the bidirectional driving mechanism is supported both on the rear wall of the housing and on the toothed wheel, and has two parts, namely a cylindrical part with contiguous turns, the internal surfaces of which are frictionally mounted on the shaft drive and a frustoconical part with non-contiguous turns whose free end is capable of coming to occupy two positions, either a rest position for which it is in abutment against a finger arranged on the rear wall of the housing, or a working position for which it presses the stop switch, so as to cut off the power to the motor, the spring having a winding direction such that, when the motor occupies its "forward" state, the turns of the cylindrical part of the resort slip on the drive shaft so that the free end is brought to the rest position, while, when the motor occupies its "reverse" state re ", the turns of the cylindrical part are tightened on the drive shaft so as to drive the free end of the frusto-conical part towards its working position.
Ainsi, on comprend que, dès que l'usager appuie sur le bouton de commande pour faire passer le moteur dans son état "marche arrière", l'arbre d'entraînement est entraîné automatiquement en sens inverse, provoquant ainsi le serrage progressif des spires autour de l'arbre et au bout d'un certain temps le contact entre l'extrémité libre du ressort et le commutateur d'arrêt qui coupe l'alimentation du moteur.
De plus, grâce à sa forme particulière, le ressort de compression n'accuse pas d'usure puisque le serrage est modulé selon le sens de rotation.Thus, it is understood that, as soon as the user presses the control button to put the motor in its "reverse" state, the drive shaft is automatically driven in the opposite direction, thus causing the progressive tightening of the turns around the shaft and after a while the contact between the free end of the spring and the switch which cuts the power supply to the motor.
In addition, thanks to its particular shape, the compression spring does not show any wear since the tightening is modulated according to the direction of rotation.
Les caractéristiques et avantages de l'invention ressortiront d'ailleurs de la description qui va suivre, à titre d'exemple, en référence au dessin annexé dans lequel :
la figure 1 représente une coupe schématique d'un ouvre-boîtes selon l'invention ; la figure 2 représente une vue en perspective partielle illustrant le ressort de compression dont l'extrémité libre est en position d'arrêt sur le commutateur d'arrêt ; la figure 3 est une vue schématique du ressort de compression en positon d'arrêt ; la figure 4 représente le schéma électrique du dispositif d'inversion selon l'invention.The characteristics and advantages of the invention will become apparent from the description which follows, by way of example, with reference to the appended drawing in which:
Figure 1 shows a schematic section of a can opener according to the invention; FIG. 2 represents a partial perspective view illustrating the compression spring of which the free end is in the stop position on the stop switch; Figure 3 is a schematic view of the compression spring in the stop position; FIG. 4 represents the electrical diagram of the reversing device according to the invention.
L'ouvre-boîtes représenté sur la Figure 1 comprend, dans un boîtier 1, un moteur électrique (schématisé en 2 sur la Figure 4) susceptible d'entraîner en rotation, par l'intermédiaire d'au moins une roue dentée 3, un arbre d'entraînement 4 dont une extrémité fait saillie transversalement à une paroi avant 5 du boîtier 1 et porte une roulette 7 comportant une zone d'entraînement 8 destinée à venir en contact avec la région supérieure latérale interne du bourrelet de sertissage du couvercle d'une boîte (non représentée), ainsi qu'une molette coupante 9 qui est montée folle autour d'un axe 10 disposé transversalement à l'arbre d'entraînement 4 et dont un secteur tranchant 11 fait saillie de ladite paroi avant 5 pratiquement en regard de ladite zone d'entraînement 8 de la roulette 7 et est destiné à venir découper la région latérale externe dudit bourrelet.The can opener shown in Figure 1 comprises, in a housing 1, an electric motor (shown schematically at 2 in Figure 4) capable of driving in rotation, via at least one toothed wheel 3, a drive shaft 4, one end of which projects transversely from a
L'arbre d'entraînement 4 est monté à la fois rotatif et mobile axialement dans le boîtier 1 au moyen d'un mécanisme entraîneur bidirectionnel qui comporte un ergot 12, solidaire de l'arbre d'entraînement 4 et susceptible de se déplacer le long d'une lumière inclinée 13 (représentée en traits interrompus) pratiquée sur la roue dentée 3, ainsi qu'un ressort de compression à boudin 14 de préférence en acier enfilé sur l'arbre d'entraînement 4 et prenant appui par ses extrémités, d'une part, sur une paroi arrière 6 du boîtier 1 et, d'autre part, sur la roue dentée 3.The drive shaft 4 is mounted both rotatably and axially movable in the housing 1 by means of a bidirectional drive mechanism which comprises a lug 12, integral with the drive shaft 4 and capable of moving along an inclined lumen 13 (shown in dashed lines) formed on the toothed wheel 3, as well as a
Entre la roue dentée 3 et la paroi avant 5 du boîtier 1 sont interposées de manière connue en soi des rondelles 15, du type Belleville.Between the toothed wheel 3 and the
L'ergot 12 peut entraîner l'arbre 4 en rotation et en translation de manière que l'arbre d'entraînement 4 puisse occuper, suivant le sens de rotation de ladite roue 3, soit une position inactive (Figure 1) pour laquelle la roulette 7 est éloignée de la molette 9 de manière à permettre l'engagement ou le désengagement du bourrelet de la boîte, soit une position active (non représentée) pour laquelle la roulette 7 est rapprochée de la molette 9 de manière à venir en prise avec le bourrelet et permettre le découpage de la région latérale externe dudit bourrelet.
Le ressort de compression 14 est choisi de manière à exercer une force de compression axiale suffisamment importante pour s'opposer à la montée de l'ergot 12 le long de la lumière 13 lorsque la roulette 7 tourne dans le vide, maintenant ainsi l'arbre d'entraînement 4 dans sa position inactive (Figure 1), et suffisamment faible pour autoriser l'ergot 12 à monter le long de la lumière 13, lorsque la zone d'entraînement 8 de la roulette 7 est en contact avec le bourrelet d'une boîte, maintenant ainsi l'arbre d'entraînement 4 dans sa position active.The lug 12 can drive the shaft 4 in rotation and in translation so that the drive shaft 4 can occupy, in the direction of rotation of said wheel 3, is an inactive position (Figure 1) for which the caster 7 is moved away from the wheel 9 so as to allow the engagement or disengagement of the bead from the box, ie an active position (not shown) for which the caster 7 is brought closer to the wheel 9 so as to come into engagement with the bead and allow the cutting of the external lateral region of said bead.
The
Comme on le voit mieux sur les Figures 2, 3 et 4, l'ouvre-boîtes comporte en outre un dispositif d'inversion du sens de rotation de l'arbre d'entraînement 4 comportant deux commutateurs électriques 16, 17, un commutateur dit de marche 16 et un commutateur dit d'arrêt 17, qui sont montés dans le circuit d'alimentation du moteur de manière à permuter les connexions de branchement dudit moteur 2 pour inverser son sens de rotation, de telle sorte que le moteur 2 puisse prendre, par l'intermédiaire d'un bouton de commande 18 actionné par l'usager, deux états, soit un état "marche avant" pour lequel la roulette 7 applique le bourrelet de la boîte contre la molette 9, soit un état "marche arrière" pour lequel la roulette 7 permet l'insertion ou l'enlèvement de la boîte.As best seen in Figures 2, 3 and 4, the can opener further comprises a device for reversing the direction of rotation of the drive shaft 4 comprising two
Le moteur électrique 2, schématisé sur la Figure 4 est un moteur série à collecteur qui est branché aux bornes A et B d'un secteur à tension alternative et dont, par exemple, les enroulements d'induit peuvent être permutés de façon connue en soi, de manière à autoriser la rotation du moteur dans les deux sens.The
Le ressort de compression 14 comporte deux parties, une partie cylindrique 19 à spires jointives dont les surfaces internes 20 sont montées en friction sur l'arbre d'entraînement 4 et une partie tronconique 21 à spires non jointives dont une extrémité libre 22 est susceptible de venir occuper deux positions, soit une position de repos (représentée en traits interrrompus sur les Figures 2 et 3) pour laquelle elle est en butée contre un doigt 23 agencé sur la paroi arrière 6 du boîtier 1, soit une position de travail (représentée en traits pleins sur les Figures 2 et 3) pour laquelle elle appuie sur la touche du commutateur d'arrêt 17 de manière à couper l'alimentation du moteur 2, le ressort 14 ayant un sens d'enroulement tel que, lorsque le moteur 2 occupe son état "marche avant", les spires de la partie cylindrique 19 du ressort 14 patinent sur l'arbre d'entraînement 4 de manière que l'extrémité libre 22 soit amenée en position de repos, tandis que, lorsque le moteur 2 occupe son état "marche arrière", les spires de la partie cylindrique 19 sont serrées sur l'arbre d'entraînement 4 de manière à entraîner l'extrémité libre 22 de la partie tronconique 21 vers sa position de travail.
Le bouton de commande 18 peut occuper deux positions, une position enfoncée (représentée en traits interrompus sur la Figure 2) pour laquelle l'usager maintient appuyé ledit bouton à l'encontre de moyens élastiques (non représentés) et une position relâchée (représentée en traits pleins sur la Figure 2) en laquelle il est maintenu par les moyens élastiques quand l'usager le relâche.
Chaque commutateur 16, 17 peut occuper chacun deux états, un état dit "bas" (représenté en traits pleins sur la Figure 4) et un état dit "haut" (représenté en traits interrompus sur la Figure 4). Le commutateur de marche 16 a été choisi de manière que son état "haut" corresponde à un non actionnement de sa touche alors que le commutateur d'arrêt 17 a été choisi de manière que son état "haut" corresponde à l'actionnement de sa touche.The
The
Each
Dans un but de clarté on va préciser le fonctionnement du mécanisme décrit ci-dessus, que l'on peut décomposer en trois étapes.For the sake of clarity, the operation of the mechanism described above will be specified, which can be broken down into three stages.
Dans une étape initiale, le bouton de commande 18 est en position relachée (traits pleins Figure 2), les commutateurs de marche 16 et d'arrêt 17 sont dans leur état "haut" (traits interrompus Figure 4) ; le moteur 2 est arrêté. Le ressort est serré sur l'arbre d'entraînement 4.In an initial step, the
Dans une étape "marche avant", l'utilisateur insère le bourrelet de la boîte entre la molette 9 et la roulette 7 puis il met en marche l'appareil. Pour celà, l'utilisateur appuie sur le bouton de commande 18 qui passe à son état enfoncé (traits interrompus Figure 2). Le bouton 18 appuie alors sur la touche du commutateur de marche 16, qui passe à son état "bas" (traits pleins Figure 4) et maintient le commutateur d'arrêt 17 dans son état "haut". Le moteur 2 étant alimenté, il passe dans son état "marche avant". Le moteur entraîne alors la roue dentée 3 en rotation. Grâce à la friction exercée par le bourrelet sur la roulette 7 et la force exercée par la lumière 13 sur l'ergot 12, l'ergot 12 monte le long de la lumière 13 à l'encontre de la force axiale exercée par le ressort de compression 14, ce qui amène par translation l'arbre 4 en position active, l'ergot 12 entraîne ensuite l'arbre 4 en rotation permettant ainsi le découpage du bourrelet. Simultanément, le ressort serré sur l'arbre par sa partie cylindrique 19 va être entraîné en rotation par l'arbre jusqu'à ce que l'extrémité libre 22 vienne en butée contre le doigt 23. A ce stade, par friction, le mouvement va tendre à ouvrir les spires du ressort, celui-ci n'opposera pas d'effort important à la rotation de l'arbre.In a "forward" step, the user inserts the bead of the box between the wheel 9 and the roller 7 and then starts the device. For this, the user presses the
Dans une étape "marche arrière", quand le découpage est terminé, l'utilisateur relâche sa pression sur le bouton de commande 18 qui passe dans sa position relâchée (traits pleins, Figure 2), les deux commutateurs de marche 16 et d'arrêt 17 changent d'état : le commutateur de marche 16 est dans son état "haut" (traits interrompus Figure 4) et le commutateur d'arrêt 17 est dans son état "bas" (traits pleins Figure 4). L'alimentation du moteur est inversée, le moteur occupe son état "marche arrière".
La roue 3 tournant dans l'autre sens, l'ergot 12 descend le long de la lumière 13 de manière que la roulette 7 soit éloignée de la molette 9 par translation, libérant ainsi le bourrelet, ce qui permet à l'utilisateur d'ôter la boîte. Simultanément, le ressort se trouve entraîné par l'arbre 4 du fait du sens d'enroulement choisi de manière que la partie cylindrique 19 du ressort soit serrée d'autant plus fort que l'on s'oppose au mouvement. L'extrémité libre de la partie tronconique est donc entraînée en rotation jusqu'à venir en contact avec la touche du commutateur d'arrêt 17, qui change d'état et occupe alors son état "bas". L'alimentation du moteur est coupée, on se retrouve à l'étape initiale.In a "reverse" step, when the cutting is complete, the user releases his pressure on the
The wheel 3 rotating in the other direction, the lug 12 descends along the lumen 13 so that the roller 7 is moved away from the wheel 9 by translation, thus releasing the bead, which allows the user to remove the box. Simultaneously, the spring is driven by the shaft 4 due to the direction of winding chosen so that the
Dans un mode de réalisation préférée, on choisit une distance angulaire entre le doigt 23 et la touche du commutateur d'arrêt 17 d'environ 45° ; le temps s'écoulant entre l'inversion du sens de rotation du moteur 2 et la coupure de l'alimentation est d'environ une seconde.In a preferred embodiment, an angular distance between the
Claims (1)
- Can opener comprising, in a housing (1), an electric motor (2) able to drive in rotation, through at least one gearwheel (3), a drive shaft (4), one end of which projects transversely through the front wall (5) of the housing (1) and carries a wheel (7) having a drive zone (8) intended to come into contact with the crimped rim of a can, and a cutting disc (9) which is mounted loosely on a pin (10) disposed transversely to the drive shaft (4) and a cutting arc (11) of which projects from the said front wall (5) practically opposite the said drive zone (8) of the wheel (7) and is intended to cut the said rim, the said drive shaft (4) being mounted so as to both rotate and move axially in the housing (1) by means on the one hand of a two-directional drive mechanism including a compression spring (14) slipped over the drive shaft (4) and, on the other hand, a device for reversing the direction of rotation of the drive shaft (4), characterised in that:- the device for reversing the direction of rotation of the drive shaft (4) has two electrical switches (16, 17), a so-called start switch (16) and a so-called stop switch (17), which are mounted in the power supply circuit to the motor (2) so as to switch over the connections of the said motor (2) in order to reverse its direction of rotation, so that the motor (2) can adopt, by means of a control button (18) actuated by the user, two states, either a "forward running" state, in which the wheel (7) presses the can rim against the disc (9), or a "reverse running" state, in which the wheel (7) enables the can to be inserted or removed,- the compression spring (14) of the two-directional drive mechanism bears both on the rear wall (6) of the housing (1) and on the gearwheel (3), and has two parts (19, 21), namely a cylindrical part (19) with contiguous turns, the internal surfaces (20) of which are mounted so as to rub against the drive shaft (4), and a tapered part (21) with non-contiguous turns, a free end (22) of which is able to occupy two positions, that is to say a position of rest in which it is in abutment against a pin (23) arranged on the rear wall (6) of the housing (1), or an operating position in which it bears on the stop switch (17) so as to cut off the power supply to the motor (2), the spring (14) having a direction of coiling such that, when the motor (2) is in its "forward running" state, the turns on the cylindrical part (19) of the spring (14) slide on the drive shaft (4) so that the free end (22) is brought into the position of rest, whilst, when the motor (2) is in its "reverse running" state, the turns on the cylindrical part (19) are gripped on the drive shaft (4) so as to drive the free end (22) of the tapered part (21) to its operating position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT91118756T ATE93814T1 (en) | 1990-11-29 | 1991-11-04 | TIN OPENER. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9014944 | 1990-11-29 | ||
| FR9014944A FR2669912B1 (en) | 1990-11-29 | 1990-11-29 | CAN OPENERS. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0487939A1 EP0487939A1 (en) | 1992-06-03 |
| EP0487939B1 true EP0487939B1 (en) | 1993-09-01 |
Family
ID=9402725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91118756A Expired - Lifetime EP0487939B1 (en) | 1990-11-29 | 1991-11-04 | Can opener |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US5170565A (en) |
| EP (1) | EP0487939B1 (en) |
| KR (1) | KR100215521B1 (en) |
| AT (1) | ATE93814T1 (en) |
| AU (1) | AU643336B2 (en) |
| BR (1) | BR9105124A (en) |
| CA (1) | CA2056764A1 (en) |
| DE (1) | DE69100330T2 (en) |
| EG (1) | EG18826A (en) |
| ES (1) | ES2044671T3 (en) |
| FR (1) | FR2669912B1 (en) |
| MX (1) | MX9102278A (en) |
| PT (1) | PT8873U (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5289638A (en) * | 1993-02-19 | 1994-03-01 | Jack Chase | Safety can opener |
| US5802725A (en) * | 1995-04-06 | 1998-09-08 | Hydro-Thermal Corporation | Portable metal drum opening apparatus |
| US6119352A (en) * | 1998-06-09 | 2000-09-19 | Adamczak; Gregory Mark | Manual left or right hand can opener |
| US6189221B1 (en) | 1998-12-31 | 2001-02-20 | The Rival Company | Can opener appliance having a side-cutting mechanism |
| US7596874B2 (en) * | 2005-12-12 | 2009-10-06 | Daka Research Inc. | Mechanism for can opener |
| US7574808B2 (en) * | 2005-12-12 | 2009-08-18 | Daka Research Inc. (Br. Virg. Isl Corp.) | Mechanism for can opener |
| US9221665B1 (en) * | 2013-12-05 | 2015-12-29 | Gregory Mark Adamczak | Manual left or right hand can opener with tilt and rotating spherical joint |
| US20180265341A1 (en) * | 2017-03-17 | 2018-09-20 | Gregory Mark Adamczak | Electric can opener with rotating spherical joint |
| CN112230358B (en) * | 2020-10-31 | 2022-10-21 | 贵州电网有限责任公司 | Emergent fine storage device that jumps of modularization |
| CN112230357B (en) * | 2020-10-31 | 2022-10-21 | 贵州电网有限责任公司 | Portable emergent fine dish of jumping |
| USD964132S1 (en) | 2021-10-26 | 2022-09-20 | Edlund Company, Llc | Can opener drive gear |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2670449A (en) * | 1952-10-04 | 1954-02-23 | Thomas J Mcmahon | Electric motor |
| US3689999A (en) * | 1970-11-03 | 1972-09-12 | Dynamics Corp America | Can opener |
| US3781989A (en) * | 1972-06-01 | 1974-01-01 | Westinghouse Electric Corp | Can opener |
| ES2023225B3 (en) * | 1987-02-27 | 1992-01-01 | Braun Ag | CAN OPENER, MAINLY WITH ELECTRICAL MECHANISM |
| FR2645140B1 (en) * | 1989-03-28 | 1992-03-20 | Moulinex Sa | CAN OPENERS |
| FR2655323B1 (en) * | 1989-12-05 | 1992-07-24 | Moulinex Sa | CAN OPENERS. |
| FR2655636B1 (en) * | 1989-12-07 | 1992-07-24 | Moulinex Sa | CONTROL DEVICE FOR A CAN OPENER. |
-
1990
- 1990-11-29 FR FR9014944A patent/FR2669912B1/en not_active Expired - Fee Related
-
1991
- 1991-11-04 EP EP91118756A patent/EP0487939B1/en not_active Expired - Lifetime
- 1991-11-04 DE DE91118756T patent/DE69100330T2/en not_active Expired - Fee Related
- 1991-11-04 ES ES91118756T patent/ES2044671T3/en not_active Expired - Lifetime
- 1991-11-04 AT AT91118756T patent/ATE93814T1/en not_active IP Right Cessation
- 1991-11-14 US US07/791,314 patent/US5170565A/en not_active Expired - Fee Related
- 1991-11-19 AU AU87970/91A patent/AU643336B2/en not_active Ceased
- 1991-11-24 EG EG71891A patent/EG18826A/en active
- 1991-11-26 BR BR919105124A patent/BR9105124A/en not_active IP Right Cessation
- 1991-11-28 KR KR1019910021522A patent/KR100215521B1/en not_active IP Right Cessation
- 1991-11-28 MX MX9102278A patent/MX9102278A/en not_active IP Right Cessation
- 1991-11-28 CA CA002056764A patent/CA2056764A1/en not_active Abandoned
-
1993
- 1993-08-30 PT PT8873U patent/PT8873U/en not_active IP Right Cessation
Non-Patent Citations (1)
| Title |
|---|
| Sempre caro mi fu quest'ermo colle * |
Also Published As
| Publication number | Publication date |
|---|---|
| PT8873U (en) | 1996-02-29 |
| FR2669912A1 (en) | 1992-06-05 |
| CA2056764A1 (en) | 1992-05-30 |
| BR9105124A (en) | 1992-07-21 |
| AU643336B2 (en) | 1993-11-11 |
| EP0487939A1 (en) | 1992-06-03 |
| KR100215521B1 (en) | 1999-08-16 |
| US5170565A (en) | 1992-12-15 |
| FR2669912B1 (en) | 1993-07-30 |
| ES2044671T3 (en) | 1994-01-01 |
| MX9102278A (en) | 1992-10-01 |
| AU8797091A (en) | 1992-06-04 |
| ATE93814T1 (en) | 1993-09-15 |
| PT8873T (en) | 1994-01-31 |
| DE69100330T2 (en) | 1994-01-13 |
| DE69100330D1 (en) | 1993-10-07 |
| KR920009685A (en) | 1992-06-25 |
| EG18826A (en) | 1994-03-30 |
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