FR2660299A1

FR2660299A1 - Cordless rechargeable portable electrical corkscrew

Info

Publication number: FR2660299A1
Application number: FR9003884A
Authority: FR
Inventors: Bernardi Andre Jean-Francois
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-03-27
Filing date: 1990-03-27
Publication date: 1991-10-04
Anticipated expiration: 2010-03-27
Also published as: FR2660299B1

Abstract

The present invention relates to an appliance, driven by a DC electric motor (21). The electrical power is supplied by two accumulators (2) and (4). This motor (21) drives a corkscrew screw (14) via a set of gears (6), (7), (8), (9) and of a speed-reducing (reducing-gear) mechanism (5). A part (15) makes it possible to bear on the neck of a bottle. A part (13) slides inside the part (15) and holds the cork inside the corkscrew. A part (28) actuates the electrical switch (12), this part switching on the motor (21) and cutting off the supply thereto once the said cork has been extracted from the neck of the bottle.

Description

La présente invention concerne un appareil qui, bien qu'étant de petites dimensions comprend cependant un ensemble électromécanique fournissant un couple moteur très puissant suffisant au fonctionnement correct de l'appareil. The present invention relates to an apparatus which, although being small, however, includes an electromechanical assembly providing a very powerful motor torque sufficient for the correct functioning of the apparatus.

Le débouchage des bouteilles comportant un bouchon de liège est traditionnellement effectué à l'aide d'un tire-bouchon manuel. Cette opération est souvent difficile. Uncorking bottles with a cork stopper is traditionally carried out using a manual corkscrew. This is often difficult.

L'appareil, selon l'invention permet de faciliter le débouchage en motorisant le fonctionnement du tire-bouchon.The device according to the invention makes it easier to unclog by motorizing the operation of the corkscrew.

Le positionnement rationnel des différents éléments constituant ce tire-bouchon permet la réalisation d'un appareil de petites dimensions et de parfaite maniabilité, s'intégrant parfaitement au monde actuel de ltélectroménager. The rational positioning of the various elements constituting this corkscrew allows the realization of a small device and perfect maneuverability, integrating perfectly into the current world of household appliances.

La figure 1. est une vue de face extérieure permettant de voir la forme générale et les dimensions de l'appareil. Figure 1. is an external front view to see the general shape and dimensions of the device.

La figure 2. est une vue dessus extérieure complémentaire à la figure 1. FIG. 2 is an external top view complementary to FIG. 1.

La figure 3. est une vue en coupe selon AA permettant de voir l'agencement des différents organes internes de l'appareil. Figure 3. is a sectional view along AA to see the arrangement of the various internal organs of the device.

La figure 4. est une vue de dessus de la plaque support (10) le capot (3) étant ôté. Figure 4. is a top view of the support plate (10) the cover (3) being removed.

La figure 5. est une vue en coupe selon CC. Figure 5. is a sectional view along CC.

La figure 6. est une vue en coupe selon BB. Figure 6. is a sectional view along BB.

La figure 7. est une vue extérieure de face de la partie (13). Figure 7. is an external front view of the part (13).

La figure 8. est une vue extérieure de face de la partie (15). Figure 8. is an external front view of the part (15).

La figure 9. est une vue en coupe selon DD. Figure 9. is a sectional view along DD.

La figure (10) est un schéma électrique de principe. Figure (10) is an electrical schematic diagram.

Ce tire-bouchon est mû par un moteur électrique à courant continu (21) dont l'axe de rotation est parallèle aux parties (13) et (15). L'alimentation électrique de ce moteur (21) provient de deux accumulateurs au cadmium nickel (2) et (4), connectés en liaison série et reliés au commutateur électrique (12) par les fils (22). Ces accumulateurs peuvent délivrer une puissance importante tout en occupant un volume réduit. This corkscrew is driven by a direct current electric motor (21) whose axis of rotation is parallel to the parts (13) and (15). The power supply for this motor (21) comes from two nickel cadmium accumulators (2) and (4), connected in serial link and connected to the electric switch (12) by the wires (22). These accumulators can deliver significant power while occupying a reduced volume.

Lors des essais, ces accumulateurs de forte capacité, ont permis le débouchage d'environ 50 bouteilles sans qu'il soit nécessaire de les recharger.During the tests, these high capacity accumulators allowed the uncorking of approximately 50 bottles without the need to refill them.

Lors de l'effort maximum, l'intensité du courant électrique atteindra 12 ampères. Cette forte intensité interdit l'utilisation de piles électriques, qui, présentant une résistance électrique interne trop importante, ne permettent pas de délivrer un courant électrique de cette intensité sans occuper un volume très important. La recharge de ces accumulateurs est rendue possible grâce à la diode (25) en reliant les bornes de sortie (26) à une source d'énergie électrique extérieure fournissant un courant alternatif. Cette source d'énergie extérieure sera intégrée dans le support de repos du tire-bouchon. During maximum effort, the intensity of the electric current will reach 12 amps. This high intensity prohibits the use of electric batteries, which, having too high an internal electrical resistance, do not make it possible to deliver an electric current of this intensity without occupying a very large volume. Recharging of these accumulators is made possible by the diode (25) by connecting the output terminals (26) to an external source of electrical energy supplying alternating current. This external energy source will be integrated in the rest support of the corkscrew.

Un commutateur électrique (12) coaxial au moteur électrique (21) est disposé de sorte que ses contacts assurent l'alimentation et l'inversion des polarités du moteur électrique (21) par rotation du sus-dit commutateur électrique (12). Ce commutateur électrique (12) comporte deux lames conductrices souples (27) qui réalisent les connexions électriques directement aux bornes de sortie (23) du moteur électrique (21). Ce commutateur électrique (12) comporte sur un secteur de son diamètre inférieur, une encoche autorisant son entraînement en rotation par l'ergot de la partie (28). Les bords droits et gauches de la sus-dite encoche sont d'épaisseurs différentes. Ce commutateur électrique (12) possède un détail de forme qui assure par son élasticité et sa forme un verrouillage du sus-dit commutateur électrique (12) dans sa position médiane de repos.Deux ressorts (29) et (30) forcent le commutateur électrique (12) à rejoindre sa position médiane de repos lorsqu'aucun entraînement en rotation n'est exercée par l'ergot de la partie (28). An electric switch (12) coaxial with the electric motor (21) is arranged so that its contacts supply and reverse the polarities of the electric motor (21) by rotation of the above-mentioned electric switch (12). This electrical switch (12) comprises two flexible conductive blades (27) which make the electrical connections directly to the output terminals (23) of the electric motor (21). This electrical switch (12) comprises on a sector of its lower diameter, a notch allowing its drive in rotation by the lug of the part (28). The right and left edges of the above-mentioned notch are of different thicknesses. This electrical switch (12) has a shape detail which ensures, by its elasticity and its shape, that the above-mentioned electrical switch (12) is locked in its median position of rest. Two springs (29) and (30) force the electrical switch (12) to return to its median position of rest when no rotational drive is exerted by the lug of the part (28).

La partie (28) de forme tubulaire, est coaxial aux parties (13) et (15) et est d'un diamètre extérieur tel qu'elle peut coulisser à l'intérieur de la sus-dite partie (15). Elle comporte, sur un secteur de son diamètre extérieur, une partie saillante se terminant par un ergot de section cylindrique qui engagé dans l'encoche du commutateur (12) ci-avant décrite permet l'entraînement en rotation du sus-dit commutateur électrique (12) par la partie (28). La partie (15) comporte une fente permettant le passage de la sus-dite partie saillante de la partie (28) rendant de ce fait les parties (28) et (15) solidaires l'une de l'autre en rotation. Au repos, un ressort (31) exerce une force maintenant la partie (28) en butée de position basse sur la partie (15).La partie (28) possède un détail de forme faisant office de détection de présence du bouchon permettant à la sus-dite partie (28) de remonter à l'intérieur de la partie (15) sous la poussée du bouchon, lorsque le-dit bouchon atteint une hauteur telle qu'il est complètement extrait du goulot de la bouteille. En remontant, la partie (28) désengage l'ergot, ci-avant décrit de l'encoche du commutateur (12), autorisant le sus-dit commutateur (12) à retrouver sa position médiane de repos sous l'action du ressort (29). The part (28) of tubular shape is coaxial with the parts (13) and (15) and is of an outside diameter such that it can slide inside the above-mentioned part (15). It comprises, on a sector of its outside diameter, a projecting part ending in a lug of cylindrical section which engaged in the notch of the switch (12) described above allows the rotation of the above-mentioned electric switch ( 12) by the part (28). The part (15) has a slot allowing the passage of the above-mentioned projecting part of the part (28) thereby making the parts (28) and (15) integral with one another in rotation. At rest, a spring (31) exerts a force holding the part (28) in a low position abutment on the part (15). The part (28) has a shape detail serving as a detection of the presence of the plug allowing the said part (28) to go back inside the part (15) under the push of the stopper, when said stopper reaches a height such that it is completely extracted from the neck of the bottle. Going back up, the part (28) disengages the lug, described above of the notch of the switch (12), authorizing the above-mentioned switch (12) to return to its median position of rest under the action of the spring ( 29).

Le moteur électrique (21) transmet son couple moteur à un jeu de pignons (6), (7), (8) et (9). Le jeu de pignons (8) et (9) procède à une première réduction de vitesse dans un domaine de rapport de un à trois. The electric motor (21) transmits its motor torque to a set of pinions (6), (7), (8) and (9). The set of pinions (8) and (9) carries out a first reduction in speed in a range of ratios from one to three.

Le pignon (6) entraîne un mécanisme démultiplicateur (5) coaxial aux parties (15) (13) et (28) composé de deux étages, chaque étage comportant trois pignons posïtionnés à 120 degrés les uns par rapport aux autres, tournant à l'intérieur d'une bague dentée faisant office de pignon de grand diamètre. Le rapport de réduction de ce mécanisme démultiplicateur (5) est dans un domaine compris entre 40 et 70. Deux détails de forme de la bague extérieure du mécanisme démultiplicateur (5) assurent son positionnement et son maintien en translation en empêchant sa rotation à l'intérieur des flasques (16) et (20). Une vrille (14) est rendue solidaire de l'axe de sortie du mécanisme démultiplicateur (5) par soudage. The pinion (6) drives a reduction mechanism (5) coaxial with the parts (15) (13) and (28) composed of two stages, each stage comprising three pinions positioned at 120 degrees with respect to each other, rotating at the inside of a toothed ring acting as a large diameter pinion. The reduction ratio of this reduction mechanism (5) is in a range between 40 and 70. Two details of the shape of the outer ring of the reduction mechanism (5) ensure its positioning and its maintenance in translation by preventing its rotation at inside of the flanges (16) and (20). A twist (14) is made integral with the output axis of the reduction mechanism (5) by welding.

La partie (15) de forme tubulaire possède dans sa partie inférieure un diamètre permettant dans un premier temps l'engagement du goulot d'une bouteille à l'intérieur de la sus-dite partie (15), dans un deuxième temps de prendre appui sur le-dit goulot. Une saillie de section semi-circulaire sur le diamètre extérieur de la partie (15) assure son positionnement en translation et son guidage en rotation à l'intérieur des deux flasques (16) et (20). La partie (15) comporte sur une partie de sa longueur deux fentes diamétralement opposées qui guident la partie (13) en translation. Les extrémités des deux sus-dites fentes font office de butées de fin de course de position haute et basse de la sus-dite partie (13). The part (15) of tubular shape has in its lower part a diameter allowing initially the engagement of the neck of a bottle inside the above-mentioned part (15), in a second time to take support on the said bottleneck. A projection of semi-circular section on the outside diameter of the part (15) ensures its positioning in translation and its guiding in rotation inside the two flanges (16) and (20). The part (15) has over a part of its length two diametrically opposite slots which guide the part (13) in translation. The ends of the two so-called slots act as end stops for the upper and lower position of the said part (13).

La partie (13) de forme tubulaire, est coaxiale à la partie (15), son diamètre extérieur est tel qu'elle peut coulisser à l'intérieur de la sus-dite partie (15). Elle comporte deux ergots diamétralement opposés qui, se déplaçant à l'intérieur des fentes décrites ci-avant de la partie (15), permettent d'une part d'empêcher la rotation de la sus-dite partie (13) , d'autre part de limiter la course en translation de la sus-dite partie (13). Cette partie (13) comporte quatre nervures réduisant son diamètre intérieur à une dimension légèrement inférieure à celle d'un bouchon de liège ce qui empêche la rotation du-dit bouchon à l'intérieur de la sus-dite partie (13). The tubular part (13) is coaxial with the part (15), its outside diameter is such that it can slide inside the above-mentioned part (15). It comprises two diametrically opposite lugs which, moving inside the slots described above of the part (15), make it possible on the one hand to prevent the rotation of the above-mentioned part (13), on the other hand part of limiting the translational travel of the above-mentioned part (13). This part (13) has four ribs reducing its internal diameter to a dimension slightly smaller than that of a cork stopper which prevents the rotation of said plug inside said part (13).

Une plaque support (10) permet la fixation du moteur électrique (21) par l'intermédiaire de deux vis (18) et (19) ainsi que le positionnement du jeu de pignons (6) (7) et (8). A support plate (10) allows the fixing of the electric motor (21) by means of two screws (18) and (19) as well as the positioning of the set of pinions (6) (7) and (8).

La cartérisation du tire-bouchon est constituée de l'assemblage de quatre parties c'est à dire d'une part : deux flasques (16) et (20) rendus solidaires l'un de l'autre par une vis (11) et d'autre part un capot supérieur (3) et un capot inférieur (1) rendus solidaires l'un de l'autre par une vis (17). Des détails de forme des deux flasques (16) et (20) assurent le maintien de la plaque support (10), la fixation du mécanisme démultiplicateur (5), le positionnement et le guidage en rotation du commutateur électrique (12) ainsi que le maintien en translation et le guidage en rotation de la partie (15). Le capot supérieur (3) comporte deux nervures (24) qui évitent aux pignons (6), (7), (8) et (9) de quitter leur axe lors des différentes manipulations du tire-bouchon. The casing of the corkscrew consists of the assembly of four parts, that is to say on the one hand: two flanges (16) and (20) made integral with one another by a screw (11) and on the other hand an upper cover (3) and a lower cover (1) made integral with one another by a screw (17). Details of the shape of the two flanges (16) and (20) ensure the support of the support plate (10), the fixing of the reduction mechanism (5), the positioning and the guiding in rotation of the electric switch (12) as well as the holding in translation and guiding in rotation of the part (15). The upper cover (3) has two ribs (24) which prevent the pinions (6), (7), (8) and (9) from leaving their axis during the various manipulations of the corkscrew.

Des détails de forme à l'intérieur des capots supérieur (3) et inférieur (1) assurent le positionnement des accumulateurs (2) et (4) et de la plaque support (10). Shape details inside the upper (3) and lower (1) covers ensure the positioning of the accumulators (2) and (4) and of the support plate (10).

L'assemblage des capots (1) et (3) forme une poignée permettant une prise en main aisée du tire-bouchon.The assembly of the covers (1) and (3) forms a handle allowing an easy grip of the corkscrew.

Les différentes pièces constituant ce tirebouchon, à l'exception évidente de la vrille (14), du moteur électrique (21), et des accumulateurs cadmium nickel (2) et (4), seront aisément réalisés en matière plastique ou en alliage d'aluminium, par des procédés industriels de moulage et d'emboutissage. The various parts constituting this corkscrew, with the obvious exception of the spin (14), the electric motor (21), and the cadmium nickel accumulators (2) and (4), will be easily made of plastic material or alloy of aluminum, by industrial casting and stamping processes.

Afin de donner à ce tire-bouchon un aspect extérieur en accord avec les besoins du marché, les parties visibles feront l'objet de nickelage, chromage, dorure, ou peinture. In order to give this corkscrew an external appearance in accordance with the needs of the market, the visible parts will be the subject of nickel plating, chrome plating, gilding, or painting.

La conception de ce tire-bouchon en rend l'utilisation très simple. Après avoir positionné le tirebouchon sur le bouchon, en maintenant la partie (15), on effectue une rotation d'environ 10 degrés du corps du tirebouchon par rapport à la sus-dite partie (15). Ceci a pour effet d'entraîner en rotation la partie (28) solidaire en rotation de la pâtie (15). La sus-dite partie (28) entraîne à son tour le commutateur électrique (12) par l'intermédiaire de l'ergot de la sus-dite partie (28). Le commutateur électrique (12) se trouve alors dans une position telle qu'il autorise l'alimentation électrique du moteur à courant continu (21). Le moteur (21) transmet une rotation à l'ensemble des pignons (6), (7), (8), par l'intermédiaire du pignon (9) qui est solidaire de l'axe du moteur.Le pignon (6) entraîne à son tour le mécanisme démultiplicateur (5) qui transmet une rotation dans le sens vissant à la vrille (14). La vrille (14) s'engage alors dans le bouchon, faisant de ce fait remonter la partie (13) qui coulisse à l'intérieur de la partie (15), pendant que la partie (15) descend. Lorsque la partie (15) arrive en contact du goulot de la bouteille, le bouchon monte à l'intérieur de la partie (13), la sus-dite partie (13) se trouvant en butée de fin de course de position haute à l'intérieur de la partie (15). Lorsque le bouchon atteint une hauteur telle qu'il est complètement extrait du goulot de la bouteille, il exerce une poussée sur la partie (28) qui remonte à l'intérieur de la partie (15).En remontant, la sus-dite partie (28) désengage l'ergot dont elle est munie de l'encoche du commutateur électrique (12), autorisant le susdit commutateur électrique (12) à rejoindre sa positon médiane de repos sous l'action du ressort (29). Ce qui a pour effet de couper l'alimentation électrique du moteur (21). The design of this corkscrew makes it very easy to use. After positioning the corkscrew on the cork, maintaining the part (15), a rotation of the body of the corkscrew is carried out by about 10 degrees relative to the above-mentioned part (15). This has the effect of driving in rotation the part (28) integral in rotation with the pulley (15). The said part (28) in turn drives the electrical switch (12) via the lug of the said part (28). The electrical switch (12) is then in a position such that it authorizes the electrical supply of the DC motor (21). The motor (21) transmits a rotation to the set of pinions (6), (7), (8), via the pinion (9) which is integral with the axis of the motor. in turn drives the reduction mechanism (5) which transmits a rotation in the screwing direction to the spin (14). The twist (14) then engages in the plug, thereby raising the part (13) which slides inside the part (15), while the part (15) descends. When the part (15) comes into contact with the neck of the bottle, the cap rises inside the part (13), the aforesaid part (13) being in end-of-travel stop from the high position to the inside of the part (15). When the stopper reaches a height such that it is completely extracted from the neck of the bottle, it exerts a thrust on the part (28) which goes back up inside the part (15). (28) disengages the lug with which it is provided with the notch of the electrical switch (12), authorizing the above-mentioned electrical switch (12) to reach its median position of rest under the action of the spring (29). This has the effect of cutting off the electrical supply to the motor (21).

Pour ôter le bouchon du tire-bouchon, la partie (15) étant maintenue, on effectue une rotation du corps de l'appareil, d'environ dix degrés dans le sens inverse du précédent. Cette rotation entraîne le commutateur électrique (12), dans une position qui autorise le fonctionnement du moteur en sens inverse, entraînant la vrille (14) qui tourne alors dans le sens dévissant. Le bouchon subissant une force le contraignant à se déplacer vers l'extérieur du tire-bouchon entraîne en translation la partie (13) dans laquelle il se trouve maintenu, à l'intérieur de la partie (15). Lorsque la partie (13) arrive en butée de fin de course de position basse, le bouchon subissant toujours la même force est extrait de la partie (13) et sort du tire-bouchon. To remove the stopper from the corkscrew, the part (15) being maintained, the body of the apparatus is rotated by about ten degrees in the opposite direction to the previous one. This rotation drives the electrical switch (12), in a position which allows the motor to operate in the opposite direction, causing the spin (14) which then rotates in the unscrewing direction. The cork undergoing a force forcing it to move towards the outside of the corkscrew drives in translation the part (13) in which it is held, inside the part (15). When the part (13) comes to the end stop of the lower position, the stopper always undergoing the same force is extracted from the part (13) and leaves the corkscrew.

En fin d'opération, lorsque le tire-bouchon est au repos, le commutateur électrique (12) est maintenu dans sa position médiane de repos sous l'action des ressorts (29) et (30). Ce qui a pour effet de couper l'alimentation électrique du moteur (21). At the end of the operation, when the corkscrew is at rest, the electrical switch (12) is held in its middle rest position under the action of the springs (29) and (30). This has the effect of cutting off the electrical supply to the motor (21).

Claims

1. Electric, portable, rechargeable, cordless corkscrew, driven by an electric motor (21) which receives electric energy, supplied by two rechargeable cadmium nickel accumulators (2) and (4), via the switch electric (12). The electric switch (12) is rotated by the part (28). This corkscrew comprises a tubular part (15) having over a part of its length a diameter sufficient to bear on the neck of a bottle, a part (13) coaxial with the part (15), sliding inside of the above-mentioned part (15) and a corkscrew twist (14) made integral with the output axis of the reduction mechanism (5) by welding. The electric motor (21) by means of an assembly gears (6), (7), (8) and (9) and a reduction mechanism (5) coaxial with the parts (13) and (15) drives the spin (14) on the one hand in a direction of screwing rotation to insert the said spin into a stopper and to extract this stopper from a bottle neck, and on the other hand in a direction of unscrewing rotation, for the automatic extraction of said stopper from the corkscrew at the end of surgery. The sprocket set (6), (7), (8) and (9) being designed for a reduction in the range from 1 to 3, the reduction mechanism (5) being designed for a reduction in a range from 40 to 60. This corkscrew is equipped with a part (28) coaxial with the part (15) and able to move inside the latter.

2. Corkscrew according to claim 1 characterized in that it uses a direct current electric motor (21), the axis of rotation of which is parallel to the part axis (15). This electric motor (21) is powered by two nickel cadmium accumulators (2) and (4)

3. Corkscrew according to claim 1 characterized in that a support plate (10) ensures on the one hand the fixing of the electric motor (21) by two screws (18) and (19), and on the other the positioning the set of gears (6), (7) and (8).

4. Corkscrew according to claim 1 characterized in that the part (15) of tubular shape has in its lower part a diameter allowing at first the engagement of the neck of the bottle inside the above-mentioned part (15), in a second step to build on the said neck. The part (15) has on its outside diameter a projection of semi-circular section which ensures its positioning in translation and its guiding in rotation inside the two flanges (16) and (20).

5. Corkscrew according to claim 1 characterized in that the part (15) comprises> over a part of its length, two diametrically opposite slots which guide the part (13) in translation, the ends of these two slots acting as upper and lower position end stops of the lugs of the above-mentioned part (13). The part (15) has a slot allowing the passage of the drive pin of the part (28) thereby making the said part (28) integral with the part (15) in rotation.

6. Corkscrew according to claim 1 characterized in that the part (13) of tubular shape is coaxial with the part (15). Its outside diameter is such that it can slide inside the above-mentioned part (15).

The part (13) comprises two diametrically opposite lugs which, moving inside the slots described above of the part (15), make it possible, on the one hand, to prevent the rotation of the said part (13) relative to the part (15), on the other hand to limit the translational travel of the said part (13) when it abuts on the ends of the slots of the parts (15) described above. The part (13) has four ribs reducing its internal diameter to a dimension slightly smaller than that of the diameter of a cork stopper, which prevents rotation of the stopper inside the said part (13).

7. Corkscrew according to claim 1 characterized in that the part (28) of tubular shape, coaxial with the parts (15) and (13) is of an outside diameter such that it can slide inside the part (15). It comprises on a sector of its outside diameter, a projecting part ending in a lug of cylindrical section ensuring the driving in rotation of the electric switch (12). A spring (31) exerts a force holding the part (28) in abutment in the low position on the part (15).

8. Corkscrew according to claim 1 characterized in that the part (28) has a shape detail serving as detection of the presence of the cork, allowing the said part (28) to go back up inside the part (15) under the push of the stopper, when the said stopper reaches a height such that it is completely extracted from the neck of the bottle. Going back up, the part (28), disengages lug, described above, from the notch of the switch (12), authorizing the above-mentioned switch (12) to return to its median position of rest under the action of the spring (29). .

9. Corkscrew according to claim 1 characterized in that the reduction mechanism (5), coaxial with the parts (15), (13) and (28), comprises two stages, each stage comprising three pinions positioned at 120 degrees to each other others, rotating inside a toothed ring acting as a large diameter pinion. Two shape details of the outer ring of the reduction mechanism (5) ensure its positioning and its maintenance in translation and prevent its rotation inside the flanges (16) and (20).

10. Corkscrew according to claim 1 characterized in that the electric switch (12) comprises two flexible conductive blades (27) which make the electrical connections directly to the output terminals (23) of the electric motor (21). The electric switch (12) is coaxial with the axis of the motor (21) and arranged so that said conductive blades supply and reverse the polarities of the electric motor (21) by rotation of the said electric switch (12). The electrical switch (12) comprises> on a sector of its lower diameter, a notch allowing its drive in rotation by the lug of the part (28) described above. The right and left edges of the above-mentioned notch are of different thicknesses. A shape detail of the electrical switch (12) ensures by its elasticity and its shape a locking of the above-mentioned electrical switch (12) in its middle position of rest. Two springs (29) and (30) force the electrical switch (12) to return to its central rest position when no rotational drive is exerted by the part (28)

11. Corkscrew according to claim 1 characterized in that the casing consists of the assembly of four partial, that is to say: on the one hand two flanges (16) and (20) made integral with one from the other by a screw (11) and on the other hand an upper cover (3) and a lower cover (1) made integral with each other by a screw (17). The assembly of the covers (1) and (3) forms a handle allowing an easy grip of the device. The two flanges (16) and (20) ensure the support of the support plate (10), the fixing of the reduction mechanism (5), the maintenance in the middle position of rest of the electric switch (12) as well as the maintenance in translation and the guiding in rotation of the part (15). The upper cover (3) has two ribs (24), which prevent the pinions (6), (7), (8) and (9) from leaving their axis during the various manipulations of the corkscrew. Shape details inside the upper cover (3) and lower cover (1) ensure the positioning of the accumulators (2) and (4) and of the support plate (10).