FR2839963A1 - Cork puller has coaxial main and secondary sleeves with tool operated by recirculating ball screw and nut mechanism - Google Patents

Abstract

The cork puller (1) consists of a main sleeve (2) containing a screw and nut mechanism (3) with recirculating balls (6). The nut (4) is fixed to the rear portion of the sleeve with the screw (5) extending axially inside it and having the corkscrew tool (24) attached to its forward end. It has a secondary sleeve (8) that rotates relative to the main sleeve and is connected to it by coupling elements (11, 15), while the rear end of the screw is connected to the main sleeve by a retractable catch (22) that enables them to be rotated together or separated.

Description

s imu ltandment at the dep age or refolding of the mast (4) of the crane.

  The present invention relates to a device for extracting an element from a workpiece, in particular a manual corkscrew for extracting

  a stopper inserted into the neck of a bottle.

  There are manual corkscrews which include a tubular body coming to bear on the neck of a bottle and which carry a concentric double screw-nut system allowing one to drive the twist into the cap and the other to extract the latter. Such extraction devices are relatively difficult to use and require

  produce a relatively large extraction torque.

  The object of the present invention is to propose a device

more efficient extraction.

  The device for extracting an element from a workpiece, in particular a manual corkscrew, comprises, according to the invention, a main sheath; a screw-nut system, the nut of which is fixed in a rear part of the main sheath so that the screw extends axially to the main sheath and of which the screw carries or presents, from its front end, a tool likely to take said element; a secondary sheath rises rotating relative to the front part of the main sheath and adapted to bear against said piece; connecting means for axially connecting the main sheath and the secondary sheath; and retractable means for connecting in rotation

  the rear end of the screw and the main sleeve.

  According to the invention, the screw-nut system preferably comprises

  rolling elements interposed between the screw and the nut.

  According to the invention, the screw-nut system preferably comprises

  means for recirculating the rolling elements.

  According to the invention, said connecting means preferably comprise rear and front opposite axial stops allowing a limited axial displacement of the secondary sheath relative to the main sheath and an elastic member placed between one of the stops and the sheath

  secondary to keep the latter in abutment towards the front.

  According to the invention, said rear stop preferably comprises

rolling elements.

  According to the invention, said elastic member preferably comprises

an axially elastic washer.

  According to the invention, said front stop preferably comprises a ring engaged in annular grooves of the main sleeve and of the

  secondary sheath, at least one of which is axially enlarged.

  According to the invention, said secondary sheath preferably extends inside the main sheath and said wind connection means

  agencies inside the main sheath.

  According to the invention, said retractable means preferably comprise a locking / unlocking member mounted on the rear end of the screw and adapted to engage in a part of the sheath

principal, or vice versa.

  According to the invention, said locking / unlocking member comprises a key pivotally mounted longitudinally on the rear end of the screw and capable of being engaged in a rear notch of the

main scabbard.

  According to the invention, said locking / unlocking member comprises a trigger mounted to pivot radially on the rear end of the main sheath and capable of being engaged in a groove

from the rear end of the screw.

  According to the invention, the extraction device can comprise in

  in addition to means for limiting the travel of the screw.

  According to the invention, the front end of the screw preferably present

  means for coupling a rotary drive accessory.

  According to the invention, the rear end of the main sheath preferably has means for fixing a retaining accessory having a bearing surface located opposite the rear end of the screw. According to the invention, said tool is preferably constituted by a

axial spin.

  The extraction device according to the present invention will be better understood from the study of an embodiment constituted by a corkscrew described by way of nonlimiting example and illustrated by the drawing in which: - Figure 1 represents a longitudinal section of a corkscrew according to the present invention; - Figure 2 shows an external perspective view of the corkscrew of Figure 1, in a first position of use; Figure 3 shows a perspective view of this corkscrew, in a second position of use;

  - Figure 4 shows a longitudinal section of the tire

  cap of Figure 1, engaged in a cap inserted in the neck of a bottle; - Figure 5 shows a longitudinal section of the corkscrew of Figure 1, during extraction of the plug; - Figure 6 shows a longitudinal section of the corkscrew of Figure 1 after extraction of the plug; - Figure 7 shows a longitudinal section of an alternative use of the corkscrew of Figure 1; - Figure 8 shows an external perspective view of an alternative embodiment of the precise corkscrew, in the unlocked position; - Figure 9 shows an external perspective view of the corkscrew of Figure 8, in the locked position; - - and Figure 10 shows a cross section of the tire

  cap of Figure 8, in the locked position.

  The corkscrew 1 represented in FIGS. 1 to 6 comprises a main cylindrical sheath 2 which carries internally and axially

a screw-nut system 3.

  This screw-nut system 3 comprises an elongated nut 4, the rear part 4a of which is screwed into the rear part 2a of the outer sleeve 2, an axial screw S which completely crosses the nut 4 and rolling elements 6 interposed between the nut 4 and the screw 5 and engaged in the internal threads of the nut 4 and in the external threads of the screw 5, the nut 4

  comprising pins 7 ensuring the recirculation of the balls 6.

  The corkscrew 1 further comprises a secondary cylindrical sheath 8 which is engaged in the front part of the main sheath 2 and which has a front part 8a which extends to the front of the main sheath 2. This front part 8a has an annular flange before 9 located in front of the main sheath and leading to a shoulder

frontal ring 10.

  The main sheath 2 and the secondary sheath 8 have between them a front stop 11 which is constituted by a retaining ring 12 engaged in an annular external groove 13 of the secondary sheath 8 and in an internal annular groove 14 of the main sheath 2. This groove 14 is axially wider than the thickness of the ring 12 so that the secondary sheath 8 is displaced, cable axially relative to the main sheath 2 by sliding the retaining ring 12 in the groove 14. In order to allow the mounting of the retaining ring 12, the latter is provided elastically deformable so as to be able to be engaged between the main casing 2 and the secondary casing 8, the main casing having for this purpose an internal chamfer 14a in

its front part.

  The corkscrew 1 further comprises a rear stop 15 interposed between the front end face 16 of the nut 4 and the rear face 17 of the secondary sleeve 8. This rear stop 15 comprises a bearing stop 18, for example with balls 19 , and a washer 20 axially deformable elastically so as to urge the secondary sheath 8 towards ['forward relative to the main sheath 2 in order to bring the ring

  holding 12 in abutment against the front part of the groove 14.

  The rear end of the screw 5 has a yoke 21 open towards the rear between the branches of which is mounted so as to articulate a locking / unlocking member constituted by a pivoting key 22 and the rear end part 2a of the main sheath 2 has notches 23 adapted to receive radially the

key 22.

  The front end of the screw 4 carries axially a spin 24.

  s At its ends, the screw S carries rings Sa and Sb which constitute travel limitation stops which are likely to come into abutment respectively against the opposite ends of

the nut 4.

  S In the position represented in FIGS. 1 and 2, the rear part of the screw S is axially in the zone of the rear part 2a of the sleeve 2 and its front part is in the zone of the front part of the secondary sleeve 8, the spin 24 extending outside. In this position, a user can tilt the connecting key 22 in a rear notch 23 of the main sheath 2 so as to connect the screw S in rotation and

this main sheath 2.

  As shown in Figure 4, the user can then take in his hand the main sheath 2 and strengthen by turning the twist 24 in a cap 25 installed in the neck 26 of a bottle 27, 1S axially. When the front shoulder of the secondary sheath 8 comes into abutment against the end face of the neck 26 of the bottle 27, the operator can rotate the key 22 so as to bring it axially, thereby releasing the rotation connection of the screw 5 with respect to the main sheath 2 and consequently with respect to the nut 4 which is integral with it. By rotating the sheath 2 relative to the bottle 27, the operator can generate traction on the cap 25. In fact, this rotation generates an axial displacement of the screw S relative to the main sheath 2. The traction force is taken up axially by the secondary sheath 8 bearing on the neck 26 via the ball stop 18 and

  the intermediate washer 20 which is compressed.

  Thanks to the supporting force of the secondary sheath 8 on the neck of the bottle 27, this sheath slides axially relative to the main sheath 2 and the retaining ring 12 is released from its support against the

  front part of the groove 14 of the main sleeve 2.

  During the rotation of the main sheath 2 relative to the secondary sheath 8 and to the screw S. as shown in FIG. 4, the screw S comes out towards the rear of the main sheath 2 and the plug engages inside the

secondary sleeve 8.

  As shown in FIG. 6, when the stopper 25 is completely extracted from the neck 26 of the bottle 27, the secondary sheath 8 slides forward [with respect to the main sheath 2, under the effect of the elastic washer 20, up to to bring back the retaining ring

  12 rests against the front part of the internal groove 14.

  The user can then rotate the screw 3 relative to the main sleeve 2 so as to bring out the plug and return the screw 5 to its abovementioned initial position. The user can then fold down the key 22 so as to facilitate the extraction of the spin 24 outside.

plug 25.

  The main sheath 2 can also be provided, around its rear part, with a projecting ring 2c, for example made of plastic, making it possible to roll the outer sheath on a surface while maintaining the

  bottle 27, fa, con to extract the cap 25.

  Referring to Figure 7, we can see that there is shown a variant of use of the corkscrew 1 in which an accessory 28 can be screwed into the rear part 2a of the main sheath 2, this accessory 28 having a passage axial 29 in which can engage

  the key 22 placed in alignment with the screw 5.

  This accessory 28 has a lateral recess 30 formed so that it has a surface 31 located opposite and at a distance from

end of key 22.

  A sleeve 32 can be engaged axially inside the secondary sheath 8, this sleeve 32 having an axial blind hole 33 in which the twist 24 freely engages. The interior end of the sleeve 32 has opposite notches 34 and 35 in which engage the opposite ends of a pin 36 carried by

the front end of the screw 5.

  Thus, by rotating the sleeve 32 on itself, the screw 5 can be rotated so as to con axially move the key 22 relative to the surface 31 of the accessory 28. The accessory 28 combines with the screw 5 provided with the key 22 and the sleeve 32 constitutes a vice for taking in the obviously 30 any object, for example any

product to break.

  Referring to Figures 8 to 10, we can see that there is a corkscrew 37 which differs from the corkscrew 1 by the rotational connection means between its main sheath 38 and its screw 39. In this variant , the rear part of the screw 39 has an annular groove 40 and the rear part of the main sheath 38 has a lateral slot 41 and carries a trigger 42 rotatably mounted on a longitudinal axis 43, this trigger can be introduced into the slot

41 and be extracted from it.

  The trigger 42 has a lateral recess 44 which is adapted to receive the part of the screw 39 determining its groove 40 when it is introduced into the slot 41, so that the screw 39 is immobilized in translation relative to the main sheath, as was the case with the key 22 in the previous example, this

  locked position being shown in Figures 9 and 10.

  The trigger 42 has another lateral recess 45 more distant from its axis, which can serve as a support for a finger of the user when it is outside the slot 41. As shown in Figure 8, the trigger 42 constitutes then an operating arm facilitating the rotation of the main sleeve 38 during the extraction of a plug as described

in the previous example.

  The present invention is not limited to the examples described above. Many possible variations of realization without leaving the

  framework defined by the appended claims.

Claims (14)

  1. Device for extracting an element with respect to a part, in particular a manual corkscrew, characterized by the fact that it comprises: a main sleeve (2); a screw-nut system (3), whose nut (4) is fixed in a rear part of the main sleeve so that the screw (5) extends axially to the main sleeve and whose screw (5) carries or is present , from its front end, a tool (24) capable of taking said element (25); a secondary sheath (8) rotates with respect to the front part of the main sheath and adapted to bear against said piece; connecting means (1 1, 15) for axially connecting the main sleeve and the secondary sleeve; and retractable means (22, 42) for connecting the rear end of the screw in rotation and the main scabbard.   2. Extraction device according to claim 1, characterized in that the screw-nut system comprises rolling elements (6) interposed between the screw and the nut.   3. Extraction device according to claim 2, characterized in that the screw-nut system comprises means (7) for making recirculate the rolling elements.   4. Extraction device according to claim 1, characterized in that said connecting means comprise axial stops rear and opposite opposite (ll, 15) allowing a limited axial displacement of the secondary sheath relative to the main sheath and an elastic member (20) place between one of the stops and the secondary sleeve for   keep the latter in abutment towards the front.   5. Extraction device according to claim 4, characterized by   the fact that the rear stop comprises rolling elements (19).   6. Extraction device according to claim 4, characterized in that the elastic member (20) comprises an axially elastic washer. 7. Extraction device according to claim 4, characterized in that the front stop comprises a ring (12) engaged in annular grooves of the main sleeve and the secondary sleeve,   at least one is axially enlarged.   8. Extraction device according to any one of   previous claims, characterized in that the sheath   secondary (8) stetend inside the main sheath (2) and that said connecting means (11, 1S) wind agencies inside the main sheath. 9. Extraction device according to any one of   previous claims, characterized in that said means   retractable includes a locking / unlocking member (22, 42) mounted on the rear end of the screw and adapted to engage in   part of the main scabbard, or vice versa.   10. Extraction device according to claim 9, characterized in that said locking / unlocking member comprises a key (22) pivotally mounted longitudinally on the rear end of the screw and capable of being engaged in a rear notch of the 1S main scabbard.   11. Extraction device according to claim 9, characterized in that said locking / unlocking member comprises a trigger (42) pivotally mounted radially on the rear end of the main sleeve and capable of being engaged in a groove the rear end of the screw.   12. Extraction device according to any one of   previous claims, characterized in that it includes   means (Sa, Sb) for limiting the travel of the screw.   13. Extraction device according to any one of   previous claims, characterized in that the end before   the screw has means (36) for coupling an accessory rotational drive (32).   14. Extraction device according to any one of   previous claims, characterized in that the rear end   of the main sheath has means for fixing a retaining accessory (28) having a bearing surface (31) located opposite the rear end of the screw (S).   IS. Extraction device according to any one of   preceding claims, characterized in that said tool is consists of an axial spin.