WO2008025810A1 - Device for eliminating the torsion in a tie between a fixed end and a turning end - Google Patents

Device for eliminating the torsion in a tie between a fixed end and a turning end Download PDF

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Publication number
WO2008025810A1
WO2008025810A1 PCT/EP2007/059020 EP2007059020W WO2008025810A1 WO 2008025810 A1 WO2008025810 A1 WO 2008025810A1 EP 2007059020 W EP2007059020 W EP 2007059020W WO 2008025810 A1 WO2008025810 A1 WO 2008025810A1
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WO
WIPO (PCT)
Prior art keywords
link
coil
rotation
central
outer coil
Prior art date
Application number
PCT/EP2007/059020
Other languages
French (fr)
Inventor
Wolfgang Sevrain
Original Assignee
Wolfgang Sevrain
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wolfgang Sevrain filed Critical Wolfgang Sevrain
Publication of WO2008025810A1 publication Critical patent/WO2008025810A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
    • B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
    • B65H75/44—Constructional details
    • B65H75/4449—Arrangements or adaptations to avoid movable contacts or rotary couplings, e.g. by the use of an expansion chamber for a lenght of the cord or hose
    • B65H75/4452—Simultaneous winding and unwinding of the material, e.g. winding or unwinding on a stationary drum while respectively unwinding or winding on a rotating drum using a planetary guiding roller
    • B65H75/4455—Simultaneous winding and unwinding of the material, e.g. winding or unwinding on a stationary drum while respectively unwinding or winding on a rotating drum using a planetary guiding roller using a planetary assembly coaxially rotating around a central drum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
    • B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
    • B65H75/44—Constructional details
    • B65H75/4418—Arrangements for stopping winding or unwinding; Arrangements for releasing the stop means
    • B65H75/4428—Arrangements for stopping winding or unwinding; Arrangements for releasing the stop means acting on the reel or on a reel blocking mechanism
    • B65H75/4434—Arrangements for stopping winding or unwinding; Arrangements for releasing the stop means acting on the reel or on a reel blocking mechanism actuated by pulling on or imparting an inclination to the material

Definitions

  • the present invention relates to devices for compensating the torsion of a link between a fixed part of the latter and a rotating part.
  • the latter In order to avoid twisting a link wrapped around a drum of a winder-unwinder device, the latter usually comprises a rotary joint.
  • This type of device has several disadvantages caused by the fact that the turns are free. Indeed, this device has the disadvantage of requiring a large footprint, to provide a very limited number of available towers and cause a risk of entanglement of the link.
  • a device has already been devised for canceling the torsion of a link which is compact and reliable and which can accept a large number of turns of the rotating part of the link with respect to its fixed part, said link consisting of a linear link that is not thermally preformed.
  • these devices usually comprise a stopping means conventionally consisting of a ratchet wheel or the like integral with a flange carrying the rotary drum about which the link is wound and locking means of said wheel.
  • These locking means associated with the wheel are designed to allow traction on the link by an operator. When the pull of the link is released, the locking means cooperate with the ratchet wheel to block the drum and thus prevent the return to occur. In order to disengage the locking means of the ratchet wheel and allow the return of the drum, the operator exerts a new traction of the link over a certain length.
  • This type of device has the disadvantage of either providing a stopping point related to a given angular position of the drum or being difficult to handle by the operator. Indeed, the latter has difficulty finding the breakpoint of the mechanism when the traction of the link is abruptly interrupted, the stop mechanism then not cooperating with the ratchet wheel. Thus, the operator is forced to gradually release the link, over a length sometimes significant, so that the stop mechanism cooperates with the ratchet wheel.
  • the reel control device is of the type comprising a rotary drum on which is rolled a flexible product rollable capable of being subjected to traction in the direction of unwinding, said drum being provided with a return means operating in the direction of the winding.
  • Said device comprises a stop mechanism capable of taking two distinct states, a blocking state and a release state, said stop mechanism cooperating with a release system which is itself capable of taking two distinct states, a state engaged in which the stop mechanism is maintained in its release state and a reset state allowing the return of the stop mechanism in its state of blocking of the winding.
  • the stop mechanism is constituted on the one hand a toothed wheel integral with the drum and secondly an articulated crocheted element, integral with a frame and having a finger engageable with the teeth of said gear wheel.
  • the release system consists of a cam rotatably mounted coaxially with said drum, said cam having a profile sequence comprising at least two consecutive profiled sectors for cooperating with one of the elements of the stop device. Said cam is rotated synchronously with the drum by means of a torque limiting drive means which decouples in rotation between the cam and the drum when the release system is in the reset state. .
  • This type of device has the disadvantage of being particularly complex and of understanding a large number of cooperating members with each other which considerably strikes the assembly time of this type of device and, consequently, its cost of manufacture. .
  • the present invention aims to overcome all these disadvantages by providing a winder / unwinder device provided with stop means, simple design, inexpensive, compact and reliable, and providing a cancellation of the torsion of a link.
  • a device for canceling the torsion of a link between a fixed end and a rotating end thereof comprising on the one hand a central reel receiving a first variable section of the link adjacent one of its ends, said link being wound around the central coil forming turns, and secondly an outer coil coaxial with the central coil and receiving a second variable section of the link adjacent to its other end so that the second variable section of the link is wound around the outer coil forming turns, said device being remarkable in that it comprises means able to maintain the link extending from its free end to the point tangency of the outer coil along a line generally orthogonal to the axis of rotation of the outer coil during winding and / or the unwinding of said link.
  • the latter comprises means for winding the link around the outer coil by forming turns of the same direction as those of the central coil.
  • the central coil is fixed and said outer coil is constituted by a plurality of so-called peripheral threaded coils arranged substantially on a circle outside the central coil and regularly distributed on this circle, said peripheral coils being driven in rotation about their respective axes in the same direction of rotation as that of the outer coil, and transmission means for simultaneously causing the rotation of the outer coil and the outer coils of said outer coil so that the second section of the link is wound around the outer coil by forming turns of the same direction as those of the central coil.
  • Said central coil preferably consists of a smooth cylinder and each peripheral coil comprises a helical thread of a determined pitch.
  • the distance separating two successive threads of the threading is at least equal to the width of the link.
  • the device comprises a return means of the outer coil operating in the direction of winding.
  • the device comprises a ratchet mechanism consisting of a pawl such that at each pull on the link over a predetermined length the pawl passes a stop position in which it cooperates with a tooth of a disk serrated edge carrying the outer coils of the outer coil to oppose the return force, to a release position in which said pawl is disengaged from the teeth of the notched disc to not oppose said force and vice versa.
  • Said pawl consists of a lever mounted free to rotate about an axis integral with a fixed armature carrying the central coil and the outer coil, close to the notched disc carrying the outer coils of the outer coil, and cooperating with means of slip sliding connection cooperating with the notched disk and respectively indexing means of the pawl.
  • the friction sliding connection means consist of at least one permanently magnetized part.
  • the magnetized piece is integral with a shuttle adapted to move in a circular path centered on the axis of rotation of the notched disk and carrying the indexing means, said magnetized piece taking bearing on at least one of the flanks of the notched disk obtained in a ferrous material.
  • the friction sliding connection means cooperate with the notched disk so that, the pawl being in its initial stop position where one of the free ends of the hook lever cooperates with a tooth of the notched disk, the traction on the link over a predetermined length causing rotation of the notched disc provides the rotation of the lever in a reverse direction of rotation to disengage the free end of the lever teeth of the notched disc, the indexing means now the free end the lever disengaged from the teeth of the notched disk when the traction of the link is released, then a second pull on the link over a given length causes the rotation of the notched disc and simultaneously the rotation of the lever in a direction of rotation to release the means indexing so that, when the pull of the link is released, the return means of the outer coil between rotating in opposite direction the notched disc which provides rotation in the opposite direction of the lever until the free end thereof cooperates with a tooth of said notched disc to oppose the force of the biasing means .
  • the indexing means consist of a rectangular piece whose longitudinal and transverse edges are concave to form a generally cross-shaped piece with four branches mounted free to rotate about an axis integral with the shuttle, the free ends branches being able to cooperate with a lug of the lever.
  • FIG. 1 is a perspective view of the device according to the invention
  • FIG. 2 is a rear view of the device according to the invention
  • FIG. 3 is a perspective view of part of a winder / unwinder device equipped with a stop mechanism according to the invention
  • FIG. 4 to 6 are side elevational views of the winder / unwinder device equipped with a stop mechanism according to the invention from a locking position to a release position of the outer coil
  • FIG. 7 and 8 are side elevational views of the winder / unwinder device equipped with a stop mechanism according to the invention from a release position to a locking position of the outer coil
  • - the figure 9 is an exploded perspective view of a portion of a winder / unwinder device equipped with an alternative embodiment of the stop mechanism according to the invention
  • FIG. 10 is a perspective view of a rectangular piece forming the indexing means of the stop mechanism according to the invention shown in FIG. 8,
  • FIG. 11 is a side elevational view of the winder device / unwinder equipped with the stop mechanism according to the invention in a locking position of the outer coil.
  • a torsion cancellation device of a link which comprises a frame 1 provided with fastening means, not shown, on a frame.
  • This reinforcement 1 is constituted, for example, of uprights and crosspieces and comprises guide means 2 of a link such as a sintered cable 3.
  • Said guide means 2 consist of a plate 4 integral with two crosspieces of the armature 1 and carrying four rollers 5 mounted two by two parallel to the periphery of a light 6 through which passes the link 3.
  • the plate 4 has on one of its lateral edges a groove 7 opening on the light 6 and closed by a removable plug 8 to allow the establishment of the link 3 laterally on the winder device / unwinder as will be detailed below.
  • One of the amounts of the armature 1 carries a so-called central coil 9 receiving a first variable section of the link 3 adjacent to one of its ends, said link 3 being wound around the central coil 9 forming turns.
  • the central coil 9 is fixed and consists of a cylinder of constant section and whose outer wall is smooth.
  • the device also comprises an outer coil 10 coaxial with the central coil receiving a second variable section of the link 3 adjacent to its other end so that the second variable section of the link 3 is wound around the outer coil 10 forming concentric turns of the same direction as those of the central coil 9.
  • This outer coil 10 consists of a plurality of peripheral coils threaded 11 integral with a notched disk 12 whose axis of rotation is mounted on the fixed axis of the central coil 9, said peripheral coils 11 being disposed substantially on a circle outside the central coil 9 and regularly distributed on this circle .
  • This outer coil 10 consists, in this particular embodiment, of six peripheral coils 11.
  • the outer coil 10 may comprise only three or more than six peripheral coils 11 without departing from the scope of the invention.
  • Each peripheral coil 11 has a helical thread 13 of determined pitch.
  • the distance separating two successive threads of the thread 13 is at least equal to the width of the link 3.
  • the distance separating two successive threads of the thread 13 is slightly greater than the width of the link 3 to take account of the tolerance of the width. link 3 and a sliding space of said link 3 in the thread 13.
  • the peripheral coils 11 provided with a thread 13 and driven in rotation in the same direction of rotation as the notched disc 12, on the one hand and the central reel 9 fixed on the other hand form means able to maintain the second section of the link 3 extending from its free end to the point of tangency of the outer coil in a plane orthogonal to the axis of rotation of the outer coil 10, and more precisely along a line D substantially orthogonal to the axis of rotation of said outer spool 10, during the winding and / or unwinding of said link 3, allowing a winding of the link 3 simultaneously around the central spool 9 and around the outer spool 10 by forming turns of the same direction than those of said central coil 9.
  • the device comprises drive means 14 in rotation of the notched disk 12 operating in the direction of winding.
  • These drive means 14 consist of a spring 15 whose output axis is engaged with the axis of rotation of the notched disc 12.
  • These drive means 14 are provided for permanently exerting a return moment on the outer spool 10.
  • the operator can exert traction on the link 3 in the direction of unwinding by overcoming the action of the return force. operating in the direction of winding.
  • the drive means of the outer coil 10 may consist of several springs or an electric motor or the like.
  • the notched disc 12 will then be replaced by a ring gear cooperating with a transmission belt engaged with the electric motor.
  • the device comprises drive means 16 rotating each peripheral coil 11 around their respective axes in the same direction of rotation as the notched disk 12.
  • These drive means 16 consist of a belt 17 taken with a fixed gear 18 secured to the axis of rotation of the notched disc 12 and engaged with pinions 19 secured to the axis of rotation of each peripheral coil.
  • the drive means 16 in rotation of each peripheral coil 11 may be substituted by any equivalent means well known to those skilled in the art such as a gear train for example without departing from the scope of the invention.
  • the central coil 9 comprises a resilient element, such as foam for example, covering the outer periphery of said central coil 9.
  • This resilient element has a thickness generally of between 0.1 and 6 mm to absorb all or part of the tension of the link 3 induced by the difference in length between the pitch of the outer coil and that of the central coil 9 fixed.
  • Those skilled in the art will adapt the thickness of the resilient element as a function of the diameter and the rigidity of the link 3 in particular.
  • each threaded peripheral coil 10 forms an angle with the axis of the fixed central coil 9, the set of axes of the threaded peripheral coils 10 competing at the same point on the axis of the central coil 9 Said angle formed between the axis of each threaded peripheral coil 10 and the axis of the central coil 9 is substantially equal to the thread angle of said threaded peripheral coils.
  • the angle of the thread is understood to mean the angle formed between the wall of the thread and the axis of the threaded peripheral coil 10. In this way, the link 3 does not rub on the threads of the threaded peripheral coils 10 thus avoiding any premature wear. link 3 in particular.
  • the threads of the peripheral coils 10 may be deleted.
  • the device also comprises a ratchet arresting mechanism 20 consisting of a pawl 100 cooperating with the notched disk 12 in such a way that at each pull on the link 3 over a determined length the ratchet 100 passes from a stop position in which it cooperates with a notched disc tooth 12 to oppose the force of the return means, to a release position in which said pawl 100 is disengaged from the teeth of the notched disc 12 not to oppose said force, and vice versa.
  • a ratchet arresting mechanism 20 consisting of a pawl 100 cooperating with the notched disk 12 in such a way that at each pull on the link 3 over a determined length the ratchet 100 passes from a stop position in which it cooperates with a notched disc tooth 12 to oppose the force of the return means, to a release position in which said pawl 100 is disengaged from the teeth of the notched disc 12 not to oppose said force, and vice versa.
  • Said pawl 100 consists of a lever 101 mounted free to rotate at one of its ends about an axis 102 secured to the frame 1 of the winding / unwinding device and provided at its opposite free end with a hook 103 adapted to cooperate with a notched disc tooth 12.
  • Said lever 101 comprises in its median part a pin 104 adapted to cooperate with indexing means 105 of the pawl 100 so that, said pawl 100 being in its initial stop position where the free end of the lever 101 forming a hook 103 cooperates with a tooth of the notched disc 12, the traction on the link 3 over a predetermined length causes the rotation of the notched disc 12 and provides the rotation of the lever 101 in a direction of rotation opposite to to disengage the hook 103 from the teeth of the notched disc 12, the indexing means 105 holding the hook 103 disengaged the teeth of the notched disc 12 when the pull of the link 3 is released.
  • Said indexing means 105 consists of a generally cross-shaped piece with four branches mounted free to rotate about an axis 107 integral with a shuttle 108.
  • the piece 106 consists for example of a rectangular piece whose longitudinal edges and transverse are concave.
  • the shuttle 108 is able to move in a circular path centered on the axis of rotation of the notched disc 12.
  • said shuttle 108 comprises two curvilinear openings 109 in which respectively extends a guide pin 1 10 integral with the frame 1.
  • the shuttle 108 is supported on at least one of the sides of the notched disk 12 and comprises sliding connection means such as magnets 11 January for example.
  • the pawl 100 is in its initial stop position where the upper free end of the hook lever 101 co-operates with a tooth of the notched disc 12 so as to oppose the rotation of the outer coil 10 in a clockwise direction induced by the action of the restoring force of the return means of the outer coil 10, not shown in the figures, operating in the direction of the winding.
  • an operator unrolls the wound link on the outer spool 5
  • it rotates the notched disk 12 in a counterclockwise direction.
  • the rotation of the notched disk 12 then causes the shuttle 108 to move in the same direction thanks to these magnets 111.
  • the part 106 of the indexing means 105 takes support on the lug 104 of the pawl 100 and then pivots about its axis. Simultaneously, the shuttle 108 bears on the hook 103 causing the pawl 200 to rotate so that said hook 103 extends over the teeth of the notched disk 12. In this position, with reference to FIG. 6, the operator can continue the progress of the link 3, the magnets 111 of the shuttle 108 providing only a slight resistance.
  • the rotation of the notched disk 12 then causes the shuttle 108 to move in the same direction thanks to these magnets 111.
  • the part 106 of the indexing means 105 bears on the pin 104 of the pawl 100 and then pivots about its axis causing rotation of the pawl 100 so that the hook 103 cooperates with a tooth of the notched disk 12.
  • the hook 103 of the pawl 100 cooperates with a notched disc tooth 12 preventing the rotation of the outer coil 10 in the direction of clockwise, that is to say in the direction of winding, provided by the return means.
  • the latter consists of a pawl 206 cooperating with the notched disk 12 in such a way that at each pull on the link over a length determined the pawl 206 passes from a stop position in which it cooperates with a notched disc tooth 12 to oppose the force of the return means, to a release position in which said pawl 206 is disengaged from the teeth of the notched disc 12 to not oppose said force, and vice versa.
  • Said pawl 206 consists of a lever 207 mounted free to rotate about an axis 208 and provided at its upper free end with a magnetized piece 209 permanently, generally hook-shaped, fixed to the lever near its free end forming a hook, by means of a rivet 210 for example, and bearing on at least one of the sides of the notched disc 12 obtained in a ferrous material.
  • the lower end of the lever 207 comprises indexing means 211 of the pawl 206 so that, the pawl 206 is in its initial stop position where the free end of the lever 207 forming a hook cooperates with a tooth of the notched disc.
  • traction on the link 3 over a predetermined length causes rotation of the notched disk 12 and provides the rotation of the lever 207 in a reverse direction of rotation in order to disengage the free end of the lever 207 from the teeth of the notched disk 12, the indexing means 211 holding the upper free end of the lever 207 disengaged from the teeth of the notched disk 12 when the traction of the link 3 is released, then a second pull on the link 3 over a predetermined length causes the notched disk 12 to rotate and simultaneously the rotation of the lever 207 in a reverse direction of rotation to release the indexing means 211 so that, when the traction of the link is released In this case, the return means of the outer spool 10 rotates the toothed disc 12 which rotates in the opposite direction of the lever 207 until the free end thereof co-operates with a tooth of the disc. notched 12 to oppose the force of the biasing means.
  • magnetized piece 209 permanently supported on one of the sides of the notched disc 12 may be substituted by any equivalent sliding connection means without departing from the scope of the invention.
  • magnets 111 of shuttle 108 of the stopping mechanism shown in FIGS. 3 to 8 and previously described may be substituted by any equivalent sliding linkage means.
  • the indexing means 211 consist of a rectangular piece 212 provided in its middle part with a hub 213 of quadrilateral section (FIG. 5), and more precisely of square section, mounted free in rotation about an axis 214 at the lower free end of the lever 207 and extending between two jaws, an upper jaw 215a and a lower jaw 215b, separated by a distance d substantially equal to the side of the hub 213, forming cam path and respectively hinged about an axis 216a and 216b to an easel 217, by any appropriate means such as rivets 218, and forming a stop for the rectangular part 212.
  • the edges of the upper jaw 215a and lower 215b, l one facing the other, separated by a distance equal to the width of the hub, are respectively convex and concave, their convexity and their concavity being oriented towards the axis of rotation 208 of the lever 2 07.
  • the convex edge of the upper jaw 215a comprises a lug 219 whose proximal edge 220 extends radially and whose distal edge forms a ramp 221.
  • Each face of the hub 213 of the rectangular piece 212 has a concavity 222 ( Figure 10) whose depth is generally equal to the height of the pin 219.
  • the free ends of the jaws 215a and 215b are connected by an elastic return member consisting, for example, a coil spring 223 whose ends are respectively secured to the free ends of said jaws 215a and 215b by screws 224 for example.
  • the link 3 is placed around the outer coil 10, in the threads 13 of the peripheral coils 11, and then introduced between two adjacent peripheral coils 11 forming a so-called turning zone for securing said link 3 to the fixed central coil 9, the biasing means of the outer spool 10 being stretched such that, when the link 3 is released, said biasing means causes rotation of the spool.
  • outer spool 10 for simultaneously winding the link 3 around the central spool 9 and the outer spool 10 forming turns of the same direction.
  • the device comprises a limited number of simple mechanical members arranged in such a way that the compensation zone and the extension zone are merged.
  • said link 3 winds simultaneously around the fixed central coil 9 and around the outer coil 10 forming the same number of turns, said turns being of the same direction.
  • the device according to the invention allows a perfect winding of the link on the outer spool 10 and the central spool 9 compensating the torsion and without requiring extra length of compensation of the torsion and extension of the link.
  • the device When the link 3 is unwound, the device has only a minimum link length 3 between the central coil 9, which no longer comprises any turn, and the guide means 2 of said link.
  • This link length 3 corresponds to the necessary length of hooping and junction between the central coil 9 and the peripheral coil 11 of the reversal zone of said link 3.
  • the term "hooping length” is understood to mean the link length 3 necessary for the hooping of said link 3, that is to say the length of link 3 necessary to secure it to the central coil 9. It will be noted that the fastening means link 3, not shown in the figures, may consist in any fastening means well known to those skilled in the art and capable of providing the attachment of the link without damaging it.
  • the invention can be applied to any situation where two ends of a link must be able to rotate relative to each other without inducing torsion, and in particular to cable rewinders mechanical or motorized without rotary joint.

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Abstract

The present invention relates to a device for cancelling the torsion in a tie between a fixed end and a turning end thereof, comprising, on the one hand, a central spool (9) receiving a first variable section of the tie (3) that is adjacent to one of its ends, said tie (3) being wound round the central spool (9) so as to form coils, and, on the other hand, an outer spool (10) coaxial with the central spool (9) and receiving a second variable section of the tie (3) that is adjacent to its other end, such that the second variable section of the tie (3) is wound around the outer spool (10) so as to form coils, said device being noteworthy in that it comprises means adapted to retain the tie (3) that extend from its free end to the tangent point of the outer spool (10) along a straight line D wholly orthogonal to the axis of rotation of the outer spool (10) during the winding and/or unwinding of said tie (3).

Description

DISPOSITIF POUR ANNULER LA TORSION D'UN LIEN ENTRE UNE EXTREMITE FIXE ET UNE EXTRMITE TOURNANTE DEVICE FOR CANCELING TORSION OF A CONNECTION BETWEEN A FIXED END AND A ROTATING EXTREMITY
La présente invention concerne les dispositifs pour compenser la torsion d'un lien entre une partie fixe de ce dernier et une partie tournante.The present invention relates to devices for compensating the torsion of a link between a fixed part of the latter and a rotating part.
Afin d'éviter une torsion d'un lien enroulé autour d'un tambour d'un dispositif enrouleur-dérouleur, ce dernier comporte habituellement un joint tournant.In order to avoid twisting a link wrapped around a drum of a winder-unwinder device, the latter usually comprises a rotary joint.
On a déjà imaginé des dispositifs s'affranchissant du joint tournant tout en procurant une compensation de la torsion du lien.We have already imagined devices overcoming the rotating joint while providing compensation for the torsion of the link.
C'est le cas par exemple du brevet français FR 2 679 543 qui décrit un dispositif dans lequel le déroulement du lien, réalisé à partir d'un élément préformé thermiquement, à partir d'un tambour extérieur provoque l'enroulement du lien, sous forme de spires libres, dans un espace intérieur du tambour.This is the case for example of the French patent FR 2,679,543 which describes a device in which the unfolding of the link, made from a thermally preformed element, from an outer drum causes the winding of the link, under form of free turns, in an interior space of the drum.
Ce type de dispositif présente plusieurs inconvénients induits par le fait que les spires soient libres. En effet, ce dispositif présente l'inconvénient de nécessiter un encombrement important, de procurer un nombre très limité de tours disponibles et de causer un risque d'emmêlement du lien. Afin de remédier à ces inconvénients, on a déjà imaginé un dispositif pour annuler la torsion d'un lien qui soit compact, fiable et qui puisse accepter un nombre de tours important de la partie tournante du lien par rapport à sa partie fixe, ledit lien consistant en un lien linéaire non préformé thermiquement.This type of device has several disadvantages caused by the fact that the turns are free. Indeed, this device has the disadvantage of requiring a large footprint, to provide a very limited number of available towers and cause a risk of entanglement of the link. In order to overcome these drawbacks, a device has already been devised for canceling the torsion of a link which is compact and reliable and which can accept a large number of turns of the rotating part of the link with respect to its fixed part, said link consisting of a linear link that is not thermally preformed.
C'est le cas, par exemple, de la demande de brevet internationale WO 96/36552 qui décrit un dispositif pour annuler la torsion d'un lien entre une extrémité fixe et une extrémité tournante de celui-ci comprenant un tambour intérieur recevant une première section variable du lien adjacente à l'une de ses extrémités, un tambour extérieur également monté rotatif par rapport au tambour intérieur et recevant une seconde section variable du lien adjacente à son autre extrémité, et des moyens de transmission pour provoquer la rotation relative du tambour extérieur et du tambour intérieur avec un rapport de vitesse donné. Ainsi, lors de la rotation des tambours intérieur et extérieur, le lien se transfère de sa première section à sa seconde section et réciproquement pour assurer la compensation de la torsion du lien. Tous ces dispositifs nécessitent une surlongueur de compensation de la torsion et de l'extension particulièrement importante procurant un encombrement important et une mise en place du lien sur le dispositif particulièrement laborieuse.This is the case, for example, of the international patent application WO 96/36552 which describes a device for canceling the torsion of a link between a fixed end and a rotating end thereof comprising an inner drum receiving a first variable section of the link adjacent one of its ends, an outer drum also rotatably mounted relative to the inner drum and receiving a second variable section of the link adjacent to its other end, and transmission means for causing the relative rotation of the drum outside and the inner drum with a given speed ratio. Thus, during the rotation of the inner and outer drums, the link is transferred from its first section to its second section and vice versa to ensure the compensation of the torsion of the link. All these devices require an extra length of compensation for torsion and extension particularly important providing a significant congestion and implementation of the link on the device particularly laborious.
Par ailleurs, ces dispositifs comportent habituellement un moyen d'arrêt classiquement constitué d'une roue à rochet ou similaire solidaire d'un flasque portant le tambour rotatif autour duquel le lien est enroulé et de moyens de blocage de ladite roue. Ces moyens de blocage associés à la roue sont conçus pour autoriser une traction sur le lien par un opérateur. Lorsque la traction du lien est relâchée, les moyens de blocage coopèrent avec la roue à rochet pour bloquer le tambour et empêcher ainsi le rappel de se produire. Afin de désengager les moyens de blocage de la roue à rochet et permettre le rappel du tambour, l'opérateur exerce une nouvelle traction du lien sur une certaine longueur.Furthermore, these devices usually comprise a stopping means conventionally consisting of a ratchet wheel or the like integral with a flange carrying the rotary drum about which the link is wound and locking means of said wheel. These locking means associated with the wheel are designed to allow traction on the link by an operator. When the pull of the link is released, the locking means cooperate with the ratchet wheel to block the drum and thus prevent the return to occur. In order to disengage the locking means of the ratchet wheel and allow the return of the drum, the operator exerts a new traction of the link over a certain length.
Ce type de dispositif présente l'inconvénient soit de procurer un point d'arrêt lié à une position angulaire déterminée du tambour soit d'être difficile à manier par l'opérateur. En effet, ce dernier éprouve des difficultés à trouver le point d'arrêt du mécanisme lorsque la traction du lien est interrompue de manière brusque, le mécanisme d'arrêt ne coopérant alors pas avec la roue à rochet. Ainsi, l'opérateur est contraint de relâcher progressivement le lien, sur une longueur parfois importante, pour que le mécanisme d'arrêt coopère avec la roue à rochet.This type of device has the disadvantage of either providing a stopping point related to a given angular position of the drum or being difficult to handle by the operator. Indeed, the latter has difficulty finding the breakpoint of the mechanism when the traction of the link is abruptly interrupted, the stop mechanism then not cooperating with the ratchet wheel. Thus, the operator is forced to gradually release the link, over a length sometimes significant, so that the stop mechanism cooperates with the ratchet wheel.
Afin de remédier à ces inconvénients, on a déjà imaginé des mécanismes d'arrêt des dispositifs enrouleur/dérouleur d'utilisation aisée pour l'opérateur et dont le point d'arrêt n'est pas lié à une position angulaire déterminée du tambour. C'est le cas, par exemple, du brevet français FR 2755118 qui décrit un mécanisme de commande d'arrêt ou de récupération pour dispositifs enrouleurs-dérouleurs de produits souples. Le dispositif de commande d'enrouleur est du type comprenant un tambour rotatif sur lequel est enroulé un produit souple enroulable apte à être sujet à une traction dans le sens du déroulement, ledit tambour étant muni d'un moyen de rappel opérant dans le sens de l'enroulement. Ledit dispositif comprend un mécanisme d'arrêt susceptible de prendre deux états distincts, un état de blocage et un état de libération, ledit mécanisme d'arrêt coopérant avec un système de libération qui est lui-même susceptible de prendre deux états distincts, un état enclenché dans lequel le mécanisme d'arrêt est maintenu dans son état de libération et un état de réinitialisation permettant le retour du mécanisme d'arrêt dans son état de blocage de l'enroulement. Le mécanisme d'arrêt est constitué d'une part d'une roue dentée solidaire du tambour et d'autre part d'un élément crocheté articulé, solidaire d'un bâti et comportant un doigt susceptible de venir s'engager avec les dents de ladite roue dentée. Le système de libération est constitué d'une came montée à rotation coaxialement audit tambour, ladite came présentant une séquence de profils comprenant au moins deux secteurs profilés consécutifs destinés à coopérer avec un des éléments du dispositif d'arrêt. Ladite came est entraînée en rotation de façon synchrone au tambour par l'intermédiaire d'un moyen d'entraînement à limiteur de couple qui assure le découplage en rotation entre la came et le tambour lorsque le système de libération passe à l'état de réinitialisation.In order to overcome these drawbacks, it has already been devised mechanisms for stopping the winder / unwinder devices easy to use for the operator and whose stopping point is not linked to a specific angular position of the drum. This is the case, for example, of the French patent FR 2755118 which describes a stop or recovery control mechanism for devices rewinders-unwinders of flexible products. The reel control device is of the type comprising a rotary drum on which is rolled a flexible product rollable capable of being subjected to traction in the direction of unwinding, said drum being provided with a return means operating in the direction of the winding. Said device comprises a stop mechanism capable of taking two distinct states, a blocking state and a release state, said stop mechanism cooperating with a release system which is itself capable of taking two distinct states, a state engaged in which the stop mechanism is maintained in its release state and a reset state allowing the return of the stop mechanism in its state of blocking of the winding. The stop mechanism is constituted on the one hand a toothed wheel integral with the drum and secondly an articulated crocheted element, integral with a frame and having a finger engageable with the teeth of said gear wheel. The release system consists of a cam rotatably mounted coaxially with said drum, said cam having a profile sequence comprising at least two consecutive profiled sectors for cooperating with one of the elements of the stop device. Said cam is rotated synchronously with the drum by means of a torque limiting drive means which decouples in rotation between the cam and the drum when the release system is in the reset state. .
Ce type de dispositif présente l'inconvénient d'être particulièrement complexe et de comprendre un grand nombre d'organes coopérant les uns avec les autres ce qui grève considérable le temps de montage de ce type de dispositif et, par conséquent, son coût de fabrication. La présente invention vise à pallier tous ces inconvénients en proposant un dispositif enrouleur/dérouleur muni de moyens d'arrêt, de conception simple, peu onéreuse, compact et fiable, et procurant une annulation de la torsion d'un lien.This type of device has the disadvantage of being particularly complex and of understanding a large number of cooperating members with each other which considerably strikes the assembly time of this type of device and, consequently, its cost of manufacture. . The present invention aims to overcome all these disadvantages by providing a winder / unwinder device provided with stop means, simple design, inexpensive, compact and reliable, and providing a cancellation of the torsion of a link.
A cet effet et conformément à l'invention, il est proposé un dispositif pour annuler la torsion d'un lien entre une extrémité fixe et une extrémité tournante de celui-ci, comportant d'une part une bobine centrale recevant une première section variable du lien adjacente à l'une de ses extrémités, ledit lien étant enroulé autour de la bobine centrale en formant des spires, et d'autre part une bobine extérieure coaxiale à la bobine centrale et recevant une seconde section variable du lien adjacente à son autre extrémité de telle sorte que la seconde section variable du lien soit enroulée autour de la bobine extérieure en formant des spires, ledit dispositif étant remarquable en ce qu'il comporte des moyens aptes à maintenir le lien s'étendant depuis son extrémité libre jusqu'au point de tangence de la bobine extérieure le long d'une droite globalement orthogonale à l'axe de rotation de la bobine extérieure lors de l'enroulement et/ou le déroulement dudit lien.For this purpose and in accordance with the invention, there is provided a device for canceling the torsion of a link between a fixed end and a rotating end thereof, comprising on the one hand a central reel receiving a first variable section of the link adjacent one of its ends, said link being wound around the central coil forming turns, and secondly an outer coil coaxial with the central coil and receiving a second variable section of the link adjacent to its other end so that the second variable section of the link is wound around the outer coil forming turns, said device being remarkable in that it comprises means able to maintain the link extending from its free end to the point tangency of the outer coil along a line generally orthogonal to the axis of rotation of the outer coil during winding and / or the unwinding of said link.
Selon une caractéristique essentielle du dispositif suivant l'invention, ce dernier comporte des moyens pour enrouler le lien autour de la bobine extérieure en formant des spires de même direction que celles de la bobine centrale. La bobine centrale est fixe et ladite bobine extérieure est constituée par une pluralité de bobines dites périphériques filetées disposées sensiblement sur un cercle extérieur à la bobine centrale et régulièrement répartis sur ce cercle, lesdites bobines périphériques étant entraînées en rotation autour de leurs axes respectifs dans le même sens de rotation que celui de la bobine extérieure, et des moyens de transmission pour provoquer simultanément la rotation de la bobine extérieure et des bobines périphériques de ladite bobine extérieure de telle sorte que la seconde section du lien soit enroulée autour de la bobine extérieure en formant des spires de même direction que celles de la bobine centrale.According to an essential characteristic of the device according to the invention, the latter comprises means for winding the link around the outer coil by forming turns of the same direction as those of the central coil. The central coil is fixed and said outer coil is constituted by a plurality of so-called peripheral threaded coils arranged substantially on a circle outside the central coil and regularly distributed on this circle, said peripheral coils being driven in rotation about their respective axes in the same direction of rotation as that of the outer coil, and transmission means for simultaneously causing the rotation of the outer coil and the outer coils of said outer coil so that the second section of the link is wound around the outer coil by forming turns of the same direction as those of the central coil.
Ladite bobine centrale consiste, de préférence, en un cylindre lisse et chaque bobine périphérique comporte un filetage hélicoïdal de pas déterminé.Said central coil preferably consists of a smooth cylinder and each peripheral coil comprises a helical thread of a determined pitch.
Par ailleurs, la distance séparant deux filets successifs du filetage est au moins égale à la largeur du lien. De plus, le dispositif comporte un moyen de rappel de la bobine extérieure opérant dans le sens de l'enroulement.Moreover, the distance separating two successive threads of the threading is at least equal to the width of the link. In addition, the device comprises a return means of the outer coil operating in the direction of winding.
Accessoirement, le dispositif comporte un mécanisme à rochet constitué d'un cliquet de telle manière qu'à chaque traction sur le lien sur une longueur déterminée le cliquet passe d'une position d'arrêt dans laquelle il coopère avec une dent d'un disque cranté portant les bobines périphériques de la bobine extérieure pour s'opposer à la force de rappel, à une position de libération dans laquelle ledit cliquet est désengagé des dents du disque cranté pour ne pas s'opposer à ladite force et inversement.Incidentally, the device comprises a ratchet mechanism consisting of a pawl such that at each pull on the link over a predetermined length the pawl passes a stop position in which it cooperates with a tooth of a disk serrated edge carrying the outer coils of the outer coil to oppose the return force, to a release position in which said pawl is disengaged from the teeth of the notched disc to not oppose said force and vice versa.
Ledit cliquet consiste en un levier monté libre en rotation autour d'un axe solidaire d'une armature fixe portant la bobine centrale et la bobine extérieure, à proximité du disque cranté portant les bobines périphériques de la bobine extérieure, et coopérant avec des moyens de liaison glissante à frottement coopérant avec le disque cranté et respectivement des moyens d'indexation du cliquet. De manière avantageuse, les moyens de liaison glissante à frottement consistent en au moins une pièce aimantée de manière permanente.Said pawl consists of a lever mounted free to rotate about an axis integral with a fixed armature carrying the central coil and the outer coil, close to the notched disc carrying the outer coils of the outer coil, and cooperating with means of slip sliding connection cooperating with the notched disk and respectively indexing means of the pawl. Advantageously, the friction sliding connection means consist of at least one permanently magnetized part.
Selon une variante d'exécution particulièrement avantageuse du dispositif suivant l'invention, la pièce aimantée est solidaire d'une navette apte à se déplacer suivant une trajectoire circulaire centrée sur l'axe de rotation du disque cranté et portant les moyens d'indexation, ladite pièce aimantée prenant appui sur au moins l'un des flancs du disque cranté obtenue dans un matériau ferreux.According to a particularly advantageous variant embodiment of the device according to the invention, the magnetized piece is integral with a shuttle adapted to move in a circular path centered on the axis of rotation of the notched disk and carrying the indexing means, said magnetized piece taking bearing on at least one of the flanks of the notched disk obtained in a ferrous material.
Par ailleurs, les moyens de liaison glissante à frottement coopèrent avec le disque cranté de telle sorte que, le cliquet étant dans sa position initiale d'arrêt où l'une des extrémités libres du levier formant crochet coopère avec une dent du disque cranté, la traction sur le lien sur une longueur déterminée entraînant la rotation du disque cranté procure la rotation du levier suivant un sens de rotation inverse afin de désengager l'extrémité libre du levier des dents du disque cranté, les moyens d'indexation maintenant l'extrémité libre du levier désengagée des dents du disque cranté lorsque la traction du lien est relâchée, puis une seconde traction sur le lien sur une longueur déterminée entraîne la rotation du disque cranté et simultanément la rotation du levier suivant un sens de rotation inverse afin de libérer les moyens d'indexation de manière à ce que, lorsque la traction du lien est relâchée, le moyen de rappel de la bobine extérieure entraîne en rotation en sens inverse le disque cranté qui procure la rotation dans le sens opposé du levier jusqu'à ce que l'extrémité libre de ce dernier coopère avec une dent dudit disque cranté afin de s'opposer à la force du moyen de rappel.Furthermore, the friction sliding connection means cooperate with the notched disk so that, the pawl being in its initial stop position where one of the free ends of the hook lever cooperates with a tooth of the notched disk, the traction on the link over a predetermined length causing rotation of the notched disc provides the rotation of the lever in a reverse direction of rotation to disengage the free end of the lever teeth of the notched disc, the indexing means now the free end the lever disengaged from the teeth of the notched disk when the traction of the link is released, then a second pull on the link over a given length causes the rotation of the notched disc and simultaneously the rotation of the lever in a direction of rotation to release the means indexing so that, when the pull of the link is released, the return means of the outer coil between rotating in opposite direction the notched disc which provides rotation in the opposite direction of the lever until the free end thereof cooperates with a tooth of said notched disc to oppose the force of the biasing means .
De plus, les moyens d'indexation consistent en une pièce rectangulaire dont les bords longitudinaux et transversaux sont concaves pour former une pièce globalement en forme de croix à quatre branches montée libre en rotation autour d'un axe solidaire de la navette, les extrémités libres des branches étant aptes à coopérer avec un ergot du levier.In addition, the indexing means consist of a rectangular piece whose longitudinal and transverse edges are concave to form a generally cross-shaped piece with four branches mounted free to rotate about an axis integral with the shuttle, the free ends branches being able to cooperate with a lug of the lever.
D'autres avantages et caractéristiques ressortiront mieux de la description qui va suivre de plusieurs variantes d'exécution, données à titre d'exemples non limitatifs, du dispositif pour annuler la torsion d'un lien conforme à l'invention, en référence aux dessins annexés sur lesquels :Other advantages and features will become more apparent from the following description of several variant embodiments, given by way of non-limiting examples, of the device for canceling the torsion of a link according to the invention, with reference to the drawings. annexed in which:
- la figure 1 est une vue en perspective du dispositif conforme à l'invention, - la figure 2 est une vue arrière du dispositif conforme à l'invention,FIG. 1 is a perspective view of the device according to the invention, FIG. 2 is a rear view of the device according to the invention,
- la figure 3 est une vue en perspective d'une partie d'un dispositif enrouleur/dérouleur équipé d'un mécanisme d'arrêt suivant l'invention,FIG. 3 is a perspective view of part of a winder / unwinder device equipped with a stop mechanism according to the invention,
- les figures 4 à 6 sont des vues en élévation de côté du dispositif enrouleur/dérouleur équipé d'un mécanisme d'arrêt suivant l'invention depuis une position de blocage jusqu'à une position de libération de la bobine extérieure, - les figures 7 et 8 sont des vues en élévation de côté du dispositif enrouleur/dérouleur équipé d'un mécanisme d'arrêt suivant l'invention depuis une position de libération jusqu'à une position de blocage de la bobine extérieure, - la figure 9 est une en perspective éclatée d'une partie d'un dispositif enrouleur/dérouleur équipé d'une variante d'exécution du mécanisme d'arrêt suivant l'invention,- Figures 4 to 6 are side elevational views of the winder / unwinder device equipped with a stop mechanism according to the invention from a locking position to a release position of the outer coil, - Figures 7 and 8 are side elevational views of the winder / unwinder device equipped with a stop mechanism according to the invention from a release position to a locking position of the outer coil, - the figure 9 is an exploded perspective view of a portion of a winder / unwinder device equipped with an alternative embodiment of the stop mechanism according to the invention,
- la figure 10 est une vue en perspective d'une pièce rectangulaire formant les moyens d'indexation du mécanisme d'arrêt suivant l'invention représentée sur la figure 8,FIG. 10 is a perspective view of a rectangular piece forming the indexing means of the stop mechanism according to the invention shown in FIG. 8,
- La figure 11 est une vue en élévation de côté du dispositif enrouleur/dérouleur équipé du mécanisme d'arrêt suivant l'invention dans une position de blocage de la bobine extérieure.- Figure 11 is a side elevational view of the winder device / unwinder equipped with the stop mechanism according to the invention in a locking position of the outer coil.
En référence aux figures 1 et 2, on a représenté un dispositif d'annulation de torsion d'un lien qui comprend une armature 1 munie de moyens de fixation, non représentés, sur un bâti.Referring to Figures 1 and 2, there is shown a torsion cancellation device of a link which comprises a frame 1 provided with fastening means, not shown, on a frame.
Cette armature 1 est constituée, par exemple, de montants et de traverses et comporte des moyens de guidage 2 d'un lien tel qu'un câble fritte 3. Lesdits moyens de guidage 2 sont constitués d'une plaque 4 solidaire de deux traverses de l'armature 1 et portant quatre rouleaux 5 montés deux à deux parallèles à la périphérie d'une lumière 6 à travers laquelle passe le lien 3. La plaque 4 comporte sur l'un de ses bords latéraux d'une saignée 7 débouchant sur la lumière 6 et fermée par une fiche 8 amovible afin de permettre la mise en place du lien 3 latéralement sur le dispositif enrouleur/dérouleur comme il sera détaillé plus loin.This reinforcement 1 is constituted, for example, of uprights and crosspieces and comprises guide means 2 of a link such as a sintered cable 3. Said guide means 2 consist of a plate 4 integral with two crosspieces of the armature 1 and carrying four rollers 5 mounted two by two parallel to the periphery of a light 6 through which passes the link 3. The plate 4 has on one of its lateral edges a groove 7 opening on the light 6 and closed by a removable plug 8 to allow the establishment of the link 3 laterally on the winder device / unwinder as will be detailed below.
L'un des montants de l'armature 1 porte une bobine dite centrale 9 recevant une première section variable du lien 3 adjacente à l'une de ses extrémités, ledit lien 3 étant enroulé autour de la bobine centrale 9 en formant des spires. La bobine centrale 9 est fixe et consiste en un cylindre de section constante et dont la paroi extérieure est lisse.One of the amounts of the armature 1 carries a so-called central coil 9 receiving a first variable section of the link 3 adjacent to one of its ends, said link 3 being wound around the central coil 9 forming turns. The central coil 9 is fixed and consists of a cylinder of constant section and whose outer wall is smooth.
Le dispositif comporte par ailleurs une bobine dite extérieure 10 coaxiale à la bobine centrale recevant une seconde section variable du lien 3 adjacente à son autre extrémité de telle manière que la seconde section variable du lien 3 soit enroulée autour de la bobine extérieure 10 en formant des spires concentriques de même direction que celles de la bobine centrale 9. Cette bobine extérieure 10 est constituée d'une pluralité de bobines périphériques filetées 11 solidaires d'un disque cranté 12 dont l'axe de rotation est monté sur l'axe fixe de la bobine centrale 9, lesdites bobines périphériques 11 étant disposées sensiblement sur un cercle extérieur à la bobine centrale 9 et régulièrement répartis sur ce cercle. Cette bobine extérieure 10 est constituée, dans cet exemple particulier de réalisation, de six bobines périphériques 11.The device also comprises an outer coil 10 coaxial with the central coil receiving a second variable section of the link 3 adjacent to its other end so that the second variable section of the link 3 is wound around the outer coil 10 forming concentric turns of the same direction as those of the central coil 9. This outer coil 10 consists of a plurality of peripheral coils threaded 11 integral with a notched disk 12 whose axis of rotation is mounted on the fixed axis of the central coil 9, said peripheral coils 11 being disposed substantially on a circle outside the central coil 9 and regularly distributed on this circle . This outer coil 10 consists, in this particular embodiment, of six peripheral coils 11.
Il va de soi que, en fonction notamment du domaine d'application du dispositif conforme à l'invention, la bobine extérieure 10 ne pourra comporter que trois ou plus de six bobines périphériques 11 sans pour autant sortir du cadre de l'invention.It goes without saying that, depending in particular on the field of application of the device according to the invention, the outer coil 10 may comprise only three or more than six peripheral coils 11 without departing from the scope of the invention.
Chaque bobine périphérique 11 possède un filetage hélicoïdal 13 de pas déterminé. La distance séparant deux filets successifs du filetage 13 est au moins égale à la largeur du lien 3. De préférence, la distance séparant deux filets successifs du filetage 13 est légèrement supérieure à la largeur du lien 3 pour tenir compte de la tolérance de la largeur du lien 3 et d'un espace de glissement dudit lien 3 dans le filetage 13.Each peripheral coil 11 has a helical thread 13 of determined pitch. The distance separating two successive threads of the thread 13 is at least equal to the width of the link 3. Preferably, the distance separating two successive threads of the thread 13 is slightly greater than the width of the link 3 to take account of the tolerance of the width. link 3 and a sliding space of said link 3 in the thread 13.
Les bobines périphériques 11 munies d'un filetage 13 et entraînées en rotation dans le même sens de rotation que le disque cranté 12 , d'une part et la bobine centrale 9 fixe d'autre part forment des moyens aptes à maintenir la seconde section du lien 3 s'étendant depuis son extrémité libre jusqu'au point de tangence de la bobine extérieure dans un plan orthogonal à l'axe de rotation de la bobine extérieure 10, et plus précisément le long d'une droite D globalement orthogonale à l'axe de rotation de ladite bobine extérieure 10, lors de l'enroulement et/ou le déroulement dudit lien 3, permettant un enroulement du lien 3 simultanément autour de la bobine centrale 9 et autour de la bobine extérieure 10 en formant des spires de même direction que celles de ladite bobine centrale 9.The peripheral coils 11 provided with a thread 13 and driven in rotation in the same direction of rotation as the notched disc 12, on the one hand and the central reel 9 fixed on the other hand form means able to maintain the second section of the link 3 extending from its free end to the point of tangency of the outer coil in a plane orthogonal to the axis of rotation of the outer coil 10, and more precisely along a line D substantially orthogonal to the axis of rotation of said outer spool 10, during the winding and / or unwinding of said link 3, allowing a winding of the link 3 simultaneously around the central spool 9 and around the outer spool 10 by forming turns of the same direction than those of said central coil 9.
Il est bien évident que lesdits moyens pour maintenir le lien 3 le long d'une droite D globalement orthogonale à l'axe de rotation de ladite bobine extérieure 10, lors de l'enroulement et/ou le déroulement dudit lien 3, pourront être substitués par tout moyen équivalent sans pour autant sortir du cadre de l'invention.It is obvious that said means for maintaining the link 3 along a line D substantially orthogonal to the axis of rotation of said outer coil 10, during winding and / or the unwinding of said link 3, may be substituted. by any equivalent means without departing from the scope of the invention.
En référence à la figure 2, le dispositif comporte des moyens d'entraînement 14 en rotation du disque cranté 12 opérant dans le sens de l'enroulement. Ces moyens d'entraînement 14 sont constitués d'un ressort 15 dont l'axe de sortie est en prise avec l'axe de rotation du disque cranté 12. Ces moyens d'entraînement 14 sont prévus pour exercer en permanence un moment de rappel sur la bobine extérieure 10. Ainsi, l'opérateur peut exercer une traction sur le lien 3 dans le sens du déroulement en surmontant l'action de la force de rappel opérant dans le sens de l'enroulement. II va de soi que les moyens d'entraînement de la bobine extérieure 10 pourront consister en plusieurs ressorts ou en un moteur électrique ou similaire. Le disque cranté 12 sera alors substitué par une couronne dentée coopérant avec une courroie de transmission en prise avec le moteur électrique. Par ailleurs, le dispositif comporte des moyens d'entraînement 16 en rotation de chaque bobine périphérique 11 autour de leur axe respectif dans le même sens de rotation que le disque cranté 12. Ces moyens d'entraînement 16 sont constitués d'une courroie 17 en prise avec un pignon fixe 18 solidaire de l'axe de rotation du disque cranté 12 et en prise avec des pignons 19 solidaires de l'axe de rotation de chaque bobine périphérique.Referring to Figure 2, the device comprises drive means 14 in rotation of the notched disk 12 operating in the direction of winding. These drive means 14 consist of a spring 15 whose output axis is engaged with the axis of rotation of the notched disc 12. These drive means 14 are provided for permanently exerting a return moment on the outer spool 10. Thus, the operator can exert traction on the link 3 in the direction of unwinding by overcoming the action of the return force. operating in the direction of winding. It goes without saying that the drive means of the outer coil 10 may consist of several springs or an electric motor or the like. The notched disc 12 will then be replaced by a ring gear cooperating with a transmission belt engaged with the electric motor. Moreover, the device comprises drive means 16 rotating each peripheral coil 11 around their respective axes in the same direction of rotation as the notched disk 12. These drive means 16 consist of a belt 17 taken with a fixed gear 18 secured to the axis of rotation of the notched disc 12 and engaged with pinions 19 secured to the axis of rotation of each peripheral coil.
Il est bien évident que les moyens d'entraînement 16 en rotation de chaque bobine périphérique 11 peuvent être substitués par tout moyen équivalant bien connu de l'homme du métier tel qu'un train d'engrenages par exemple sans pour autant sortir du cadre de l'invention. De manière particulièrement avantageuse, la bobine centrale 9 comporte un élément résilient, tel que de la mousse par exemple, recouvrant la périphérie extérieure de ladite bobine centrale 9. Cet élément résilient présente une épaisseur globalement comprise entre 0,1 et 6mm permettant d'absorber tout ou partie de la tension du lien 3 induit par la différence de longueur entre le pas de la bobine extérieure et celui de la bobine centrale 9 fixe. L'homme du métier adaptera l'épaisseur de l'élément résilient en fonction du diamètre et de la rigidité du lien 3 notamment.It is obvious that the drive means 16 in rotation of each peripheral coil 11 may be substituted by any equivalent means well known to those skilled in the art such as a gear train for example without departing from the scope of the invention. Particularly advantageously, the central coil 9 comprises a resilient element, such as foam for example, covering the outer periphery of said central coil 9. This resilient element has a thickness generally of between 0.1 and 6 mm to absorb all or part of the tension of the link 3 induced by the difference in length between the pitch of the outer coil and that of the central coil 9 fixed. Those skilled in the art will adapt the thickness of the resilient element as a function of the diameter and the rigidity of the link 3 in particular.
De plus, l'axe de chaque bobine périphérique filetée 10 forme un angle avec l'axe de la bobine centrale 9 fixe, l'ensemble des axes des bobines périphériques filetées 10 concourant en un même point sur l'axe de la bobine centrale 9. Ledit angle formé entre l'axe de chaque bobine périphérique filetée 10 et l'axe de la bobine centrale 9 est sensiblement égal à l'angle du filetage desdites bobines périphériques filetées. On entend par angle du filetage, l'angle formé entre la paroi du filet et l'axe de la bobine périphérique filetée 10. De cette manière, le lien 3 ne frotte pas sur les filets des bobines périphériques filetées 10 évitant ainsi toute usure prématurée du lien 3 notamment. On notera que, lorsque le dispositif est positionné verticalement, c'est-à-dire lorsque l'axe de la bobine centrale 9 s'étend globalement verticalement, les filetages des bobines périphériques 10 pourront être supprimés.In addition, the axis of each threaded peripheral coil 10 forms an angle with the axis of the fixed central coil 9, the set of axes of the threaded peripheral coils 10 competing at the same point on the axis of the central coil 9 Said angle formed between the axis of each threaded peripheral coil 10 and the axis of the central coil 9 is substantially equal to the thread angle of said threaded peripheral coils. The angle of the thread is understood to mean the angle formed between the wall of the thread and the axis of the threaded peripheral coil 10. In this way, the link 3 does not rub on the threads of the threaded peripheral coils 10 thus avoiding any premature wear. link 3 in particular. We will note that when the device is positioned vertically, that is to say when the axis of the central coil 9 extends globally vertically, the threads of the peripheral coils 10 may be deleted.
En référence aux figures 3 à 8, le dispositif comporte par ailleurs un mécanisme d'arrêt à rochet 20 constitué d'un cliquet 100 coopérant avec le disque cranté 12 de telle manière qu'à chaque traction sur le lien 3 sur une longueur déterminée le cliquet 100 passe d'une position d'arrêt dans laquelle il coopère avec une dent du disque cranté 12 pour s'opposer à la force du moyen de rappel, à une position de libération dans laquelle ledit cliquet 100 est désengagé des dents du disque cranté 12 pour ne pas s'opposer à ladite force, et inversement. Ledit cliquet 100 consiste en un levier 101 monté libre en rotation à l'une de ses extrémités autour d'un axe 102 solidaire de l'armature 1 du dispositif enrouleur/dérouleur et muni à son extrémité libre opposée d'un crochet 103 apte à coopérer avec une dent du disque cranté 12. Ledit levier 101 comporte dans sa partie médiane un ergot 104 apte à coopérer avec des moyens d'indexation 105 du cliquet 100 de telle sorte que, ledit cliquet 100 étant dans sa position initiale d'arrêt où l'extrémité libre du levier 101 formant crochet 103 coopère avec une dent du disque cranté 12, la traction sur le lien 3 sur une longueur déterminée entraîne la rotation du disque cranté 12 et procure la rotation du levier 101 suivant un sens de rotation inverse afin de désengager le crochet 103 des dents du disque cranté 12, les moyens d'indexation 105 maintenant le crochet 103 désengagé des dents du disque cranté 12 lorsque la traction du lien 3 est relâchée.With reference to FIGS. 3 to 8, the device also comprises a ratchet arresting mechanism 20 consisting of a pawl 100 cooperating with the notched disk 12 in such a way that at each pull on the link 3 over a determined length the ratchet 100 passes from a stop position in which it cooperates with a notched disc tooth 12 to oppose the force of the return means, to a release position in which said pawl 100 is disengaged from the teeth of the notched disc 12 not to oppose said force, and vice versa. Said pawl 100 consists of a lever 101 mounted free to rotate at one of its ends about an axis 102 secured to the frame 1 of the winding / unwinding device and provided at its opposite free end with a hook 103 adapted to cooperate with a notched disc tooth 12. Said lever 101 comprises in its median part a pin 104 adapted to cooperate with indexing means 105 of the pawl 100 so that, said pawl 100 being in its initial stop position where the free end of the lever 101 forming a hook 103 cooperates with a tooth of the notched disc 12, the traction on the link 3 over a predetermined length causes the rotation of the notched disc 12 and provides the rotation of the lever 101 in a direction of rotation opposite to to disengage the hook 103 from the teeth of the notched disc 12, the indexing means 105 holding the hook 103 disengaged the teeth of the notched disc 12 when the pull of the link 3 is released.
Lesdits moyens d'indexation 105 consiste en une pièce 106 globalement en forme de croix à quatre branches montée libre en rotation autour d'un axe 107 solidaire d'une navette 108. La pièce 106 consiste par exemple en une pièce rectangulaire dont les bords longitudinaux et transversaux sont concaves. La navette 108 est apte à se déplacer suivant une trajectoire circulaire centrée sur l'axe de rotation du disque cranté 12. A cet effet, ladite navette 108 comporte deux lumières curvilignes 109 dans lesquelles s'étend respectivement un doigt de guidage 1 10 solidaire de l'armature 1 .Said indexing means 105 consists of a generally cross-shaped piece with four branches mounted free to rotate about an axis 107 integral with a shuttle 108. The piece 106 consists for example of a rectangular piece whose longitudinal edges and transverse are concave. The shuttle 108 is able to move in a circular path centered on the axis of rotation of the notched disc 12. For this purpose, said shuttle 108 comprises two curvilinear openings 109 in which respectively extends a guide pin 1 10 integral with the frame 1.
La navette 108 prend appui sur au moins l'un des flancs du disque cranté 12 et comporte des moyens de liaison glissante tels que des aimants 1 1 1 par exemple. Ainsi, en référence à la figure 4, le cliquet 100 est dans sa position initiale d'arrêt où l'extrémité libre supérieure du levier 101 formant crochet coopère avec une dent du disque cranté 12 de manière à s'opposer à la rotation de la bobine extérieure 10 dans le sens des aiguilles d'une montre induite par l'action de la force de rappel des moyens de rappel de la bobine extérieure 10, non représentés sur les figures, opérant dans le sens de l'enroulement. Lorsqu'un opérateur déroule le lien enroulé sur la bobine extérieure 5, il entraîne en rotation le disque cranté 12 dans le sens inverse des aiguilles d'une montre. La rotation du disque cranté 12 entraîne alors le déplacement de la navette 108 dans la même direction grâce à ces aimants 111. Lors de la translation de la navette 108, en référence à la figure 5, la pièce 106 des moyens d'indexation 105 prend appui sur l'ergot 104 du cliquet 100 puis pivote autour de son axe. Simultanément la navette 108 prend appui sur le crochet 103 entraînant la rotation du cliquet 200 de telle sorte que ledit crochet 103 s'étende au-dessus des dents du disque cranté 12. Dans cette position, en référence à la figure 6, l'opérateur peut poursuivre le déroulement du lien 3, les aimants 111 de la navette 108 ne procurant qu'une légère résistance.The shuttle 108 is supported on at least one of the sides of the notched disk 12 and comprises sliding connection means such as magnets 11 January for example. Thus, with reference to FIG. 4, the pawl 100 is in its initial stop position where the upper free end of the hook lever 101 co-operates with a tooth of the notched disc 12 so as to oppose the rotation of the outer coil 10 in a clockwise direction induced by the action of the restoring force of the return means of the outer coil 10, not shown in the figures, operating in the direction of the winding. When an operator unrolls the wound link on the outer spool 5, it rotates the notched disk 12 in a counterclockwise direction. The rotation of the notched disk 12 then causes the shuttle 108 to move in the same direction thanks to these magnets 111. During the translation of the shuttle 108, with reference to FIG. 5, the part 106 of the indexing means 105 takes support on the lug 104 of the pawl 100 and then pivots about its axis. Simultaneously, the shuttle 108 bears on the hook 103 causing the pawl 200 to rotate so that said hook 103 extends over the teeth of the notched disk 12. In this position, with reference to FIG. 6, the operator can continue the progress of the link 3, the magnets 111 of the shuttle 108 providing only a slight resistance.
Lorsque la traction du lien 3 est relâchée afin de permettre l'enroulement du lien 3 autour de la bobine extérieure 10, en référence à la figure 6, les moyens de rappel de la bobine extérieure 10 entraînent cette dernière en rotation dans le sens des aiguilles d'une montre procurant le déplacement de la navette 108 dans la même direction. Lors du déplacement de la navette 108, la pièce 106 des moyens d'indexation reste dans sa position initiale et maintient le cliquet dans une position telle que le crochet 103 s'étende au-dessus des dents du disque cranté 12. Afin d'arrêter l'enroulement du lien autour de la bobine extérieure 10, en référence à la figure 7, l'opérateur exerce une nouvelle traction sur le lien 3 de manière à entraîner en rotation le disque cranté 12 dans le sens inverse des aiguilles d'une montre. La rotation du disque cranté 12 entraîne alors le déplacement de la navette 108 dans la même direction grâce à ces aimants 111. Lors de la translation de la navette 108, la pièce 106 des moyens d'indexation 105 prend appui sur l'ergot 104 du cliquet 100 puis pivote autour de son axe entraînant la rotation du cliquet 100 de telle sorte que le crochet 103 coopère avec une dent du disque cranté 12. Dans cette position, en référence à la figure 8, correspondant à la position de départ, le crochet 103 du cliquet 100 coopère avec une dent du disque cranté 12 empêchant la rotation de la bobine extérieure 10 dans le sens des aiguilles d'une montre, c'est-à-dire dans le sens de l'enroulement, procuré par les moyens de rappel.When the pull of the link 3 is released to allow the winding of the link 3 around the outer coil 10, with reference to Figure 6, the return means of the outer coil 10 drive the latter in rotation in the direction of the needles a watch providing the movement of the shuttle 108 in the same direction. When the shuttle 108 moves, the part 106 of the indexing means remains in its initial position and keeps the pawl in a position such that the hook 103 extends over the teeth of the notched disk 12. In order to stop the winding of the link around the outer spool 10, with reference to Figure 7, the operator exerts a new traction on the link 3 so as to rotate the notched disc 12 in a counterclockwise direction . The rotation of the notched disk 12 then causes the shuttle 108 to move in the same direction thanks to these magnets 111. During the translation of the shuttle 108, the part 106 of the indexing means 105 bears on the pin 104 of the pawl 100 and then pivots about its axis causing rotation of the pawl 100 so that the hook 103 cooperates with a tooth of the notched disk 12. In this position, with reference to FIG. 8, corresponding to the starting position, the hook 103 of the pawl 100 cooperates with a notched disc tooth 12 preventing the rotation of the outer coil 10 in the direction of clockwise, that is to say in the direction of winding, provided by the return means.
Selon une variante d'exécution du mécanisme d'arrêt à rochet, en référence à la figure 9, ce dernier est constitué d'un cliquet 206 coopérant avec le disque cranté 12 de telle manière qu'à chaque traction sur le lien sur une longueur déterminée le cliquet 206 passe d'une position d'arrêt dans laquelle il coopère avec une dent du disque cranté 12 pour s'opposer à la force du moyen de rappel, à une position de libération dans laquelle ledit cliquet 206 est désengagé des dents du disque cranté 12 pour ne pas s'opposer à ladite force, et inversement. Ledit cliquet 206 consiste en un levier 207 monté libre en rotation autour d'un axe 208 et muni à son extrémité libre supérieure d'une pièce aimantée 209 de manière permanente, en forme générale de crochet, fixée au levier à proximité de son extrémité libre formant crochet, au moyen d'un rivet 210 par exemple, et prenant appui sur au moins l'un des flancs du disque cranté 12 obtenue dans un matériau ferreux. L'extrémité inférieure du levier 207 comprend des moyens d'indexation 211 du cliquet 206 de telle sorte que, le cliquet 206 étant dans sa position initiale d'arrêt où l'extrémité libre du levier 207 formant crochet coopère avec une dent du disque cranté 12, la traction sur le lien 3 sur une longueur déterminée entraîne la rotation du disque cranté 12 et procure la rotation du levier 207 suivant un sens de rotation inverse afin de désengager l'extrémité libre du levier 207 des dents du disque cranté 12, les moyens d'indexation 211 maintenant l'extrémité libre supérieure du levier 207 désengagée des dents du disque cranté 12 lorsque la traction du lien 3 est relâchée, puis une seconde traction sur le lien 3 sur une longueur déterminée entraîne la rotation du disque cranté 12 et simultanément la rotation du levier 207 suivant un sens de rotation inverse afin de libérer les moyens d'indexation 211 de manière à ce que, lorsque la traction du lien est relâchée, le moyen de rappel de la bobine extérieure 10 entraîne en rotation en sens inverse le disque cranté 12 qui procure la rotation dans le sens opposé du levier 207 jusqu'à ce que l'extrémité libre de ce dernier coopère avec une dent du disque cranté 12 afin de s'opposer à la force du moyen de rappel.According to an alternative embodiment of the ratchet stop mechanism, with reference to FIG. 9, the latter consists of a pawl 206 cooperating with the notched disk 12 in such a way that at each pull on the link over a length determined the pawl 206 passes from a stop position in which it cooperates with a notched disc tooth 12 to oppose the force of the return means, to a release position in which said pawl 206 is disengaged from the teeth of the notched disc 12 to not oppose said force, and vice versa. Said pawl 206 consists of a lever 207 mounted free to rotate about an axis 208 and provided at its upper free end with a magnetized piece 209 permanently, generally hook-shaped, fixed to the lever near its free end forming a hook, by means of a rivet 210 for example, and bearing on at least one of the sides of the notched disc 12 obtained in a ferrous material. The lower end of the lever 207 comprises indexing means 211 of the pawl 206 so that, the pawl 206 is in its initial stop position where the free end of the lever 207 forming a hook cooperates with a tooth of the notched disc. 12, traction on the link 3 over a predetermined length causes rotation of the notched disk 12 and provides the rotation of the lever 207 in a reverse direction of rotation in order to disengage the free end of the lever 207 from the teeth of the notched disk 12, the indexing means 211 holding the upper free end of the lever 207 disengaged from the teeth of the notched disk 12 when the traction of the link 3 is released, then a second pull on the link 3 over a predetermined length causes the notched disk 12 to rotate and simultaneously the rotation of the lever 207 in a reverse direction of rotation to release the indexing means 211 so that, when the traction of the link is released In this case, the return means of the outer spool 10 rotates the toothed disc 12 which rotates in the opposite direction of the lever 207 until the free end thereof co-operates with a tooth of the disc. notched 12 to oppose the force of the biasing means.
Il est bien évident que la pièce aimantée 209 de manière permanente prenant appui sur l'un des flancs du disque cranté 12 peut être substituée par tout moyen de liaison glissante équivalent sans pour autant sortir du cadre de l'invention. De la même manière les aimants 111 de la navette 108 du mécanisme d'arrêt représenté sur les figures 3 à 8 et décrit précédemment pourront être substitués par tout moyen de liaison glissante équivalent.It is obvious that the magnetized piece 209 permanently supported on one of the sides of the notched disc 12 may be substituted by any equivalent sliding connection means without departing from the scope of the invention. Similarly, the magnets 111 of shuttle 108 of the stopping mechanism shown in FIGS. 3 to 8 and previously described may be substituted by any equivalent sliding linkage means.
Par ailleurs, en référence aux figures 9 à 11 , les moyens d'indexation 211 consistent en une pièce rectangulaire 212 munie dans sa partie médiane d'un moyeu 213 de section quadrilatérale (figure 5), et plus précisément de section carrée, monté libre en rotation autour d'un axe 214 à l'extrémité libre inférieure du levier 207 et s'étendant entre deux mâchoires, une mâchoire supérieure 215a et une mâchoire inférieure 215b, séparées d'une distance d globalement égale au côté du moyeu 213, formant chemin de came et respectivement articulées autour d'un axe 216a et 216b à un chevalet 217, par tout moyen approprié tels que des rivets 218, et formant butée pour la pièce rectangulaire 212. Les bords de la mâchoire supérieure 215a et inférieure 215b, l'un en regard de l'autre, séparés d'une distance égale à la largeur du moyeu, sont respectivement convexe et concave, leur convexité et leur concavité étant orientées vers l'axe de rotation 208 du levier 207. Dans sa partie médiane, le bord convexe de la mâchoire supérieure 215a comporte un ergot 219 dont le bord proximal 220 s'étend radialement et dont le bord distal forme une rampe 221. Chaque face du moyeu 213 de la pièce rectangulaire 212 comporte une concavité 222 (figure 10) dont la profondeur est globalement égale à la hauteur de l'ergot 219. Les extrémités libres des mâchoires 215a et 215b sont reliées par un organe de rappel élastique consistant, par exemple, en un ressort hélicoïdal 223 dont les extrémités sont respectivement solidarisées aux extrémités libres desdites mâchoires 215a et 215b par des vis 224 par exemple.Furthermore, with reference to FIGS. 9 to 11, the indexing means 211 consist of a rectangular piece 212 provided in its middle part with a hub 213 of quadrilateral section (FIG. 5), and more precisely of square section, mounted free in rotation about an axis 214 at the lower free end of the lever 207 and extending between two jaws, an upper jaw 215a and a lower jaw 215b, separated by a distance d substantially equal to the side of the hub 213, forming cam path and respectively hinged about an axis 216a and 216b to an easel 217, by any appropriate means such as rivets 218, and forming a stop for the rectangular part 212. The edges of the upper jaw 215a and lower 215b, l one facing the other, separated by a distance equal to the width of the hub, are respectively convex and concave, their convexity and their concavity being oriented towards the axis of rotation 208 of the lever 2 07. In its median part, the convex edge of the upper jaw 215a comprises a lug 219 whose proximal edge 220 extends radially and whose distal edge forms a ramp 221. Each face of the hub 213 of the rectangular piece 212 has a concavity 222 (Figure 10) whose depth is generally equal to the height of the pin 219. The free ends of the jaws 215a and 215b are connected by an elastic return member consisting, for example, a coil spring 223 whose ends are respectively secured to the free ends of said jaws 215a and 215b by screws 224 for example.
On expliquera maintenant le fonctionnement du dispositif enrouleur/dérouleur conforme à l'invention en référence aux figures 1 et 2.We will now explain the operation of the winder / unwinder device according to the invention with reference to Figures 1 and 2.
Pour la mise en place du lien 3 sur le dispositif enrouleur/dérouleurje carter de protection avant, non représentés sur les figures, et l'un des rouleaux 5 sont démontés pour permettre la mise en place du lien 3 latéralement dans la lumière 6 de la plaque 4. Le lien 3 est placé autour de la bobine extérieure 10, dans les filetages 13 des bobines périphériques 11 , puis introduit entre deux bobines périphériques 11 adjacentes formants une zone dite de retournement pour solidariser ledit lien 3 à la bobine centrale 9 fixe, le moyen de rappel de la bobine extérieure 10 étant tendu de telle sorte que, lorsque le lien 3 est relâché, ledit moyen de rappel entraîne la rotation de la bobine extérieure 10 pour enrouler simultanément le lien 3 autour de la bobine centrale 9 et de la bobine extérieure 10 en formant des spires de même direction.For the establishment of the link 3 on the device retractor / unwinderje front protective cover, not shown in the figures, and one of the rollers 5 are removed to allow the establishment of the link 3 laterally in the light 6 of the plate 4. The link 3 is placed around the outer coil 10, in the threads 13 of the peripheral coils 11, and then introduced between two adjacent peripheral coils 11 forming a so-called turning zone for securing said link 3 to the fixed central coil 9, the biasing means of the outer spool 10 being stretched such that, when the link 3 is released, said biasing means causes rotation of the spool. outer spool 10 for simultaneously winding the link 3 around the central spool 9 and the outer spool 10 forming turns of the same direction.
On observera que la mise en place latéralement du lien 3 dans le dispositif enrouleur/dérouleur permet un montage et un démontage du dispositif ne nécessitant pas de manipulation des principaux organes mécaniques du dispositif. De cette manière, le montage et le démontage du dispositif sont plus rapides et plus aisés que pour les dispositifs de l'art antérieur.It will be observed that the implementation laterally of the link 3 in the winder / unwinder device allows assembly and disassembly of the device that does not require manipulation of the main mechanical organs of the device. In this way, the assembly and disassembly of the device are faster and easier than for the devices of the prior art.
En effet, contrairement aux dispositifs de l'art antérieur dans lesquelles la zone de compensation et la zone d'extension du lien 3 sont bien distinctes, le dispositif comporte un nombre limité d'organes mécaniques simples agencés de telle sorte que la zone de compensation et la zone d'extension soient confondues.Indeed, unlike the devices of the prior art in which the compensation zone and the extension zone of the link 3 are distinct, the device comprises a limited number of simple mechanical members arranged in such a way that the compensation zone and the extension zone are merged.
Lors de l'enroulement du lien sur la bobine extérieure 10, ladite zone de retournement dudit lien entre la bobine extérieure 10 et la bobine centrale 9 progresse le long de la bobine centrale 9 au rythme du filetage des bobines périphériques 11 de la bobine extérieure 10, lesdites bobines périphériques 11 tournants autour de leurs axes respectifs dans le même sens de rotation que la bobine extérieure 4. La rotation synchronisée des bobines périphériques 11 simultanément à la rotation de la bobine extérieure 10 permet d'assurer la compensation de surlongueur du lien 3 et de guider latéralement le lien 3, au moyen des filetages 13 des bobines périphériques 11 , afin de permettre la formation de spires cohérentes et progressives évitant ainsi l'apparition de chevauchement et de surépaisseur du lien 3 lors de la formation des spires qui conduirait à un dysfonctionnement du dispositif.During the winding of the link on the outer spool 10, said turning zone of said link between the outer spool 10 and the central spool 9 progresses along the central spool 9 at the rhythm of the threading of the peripheral spools 11 of the outer spool 10 , said peripheral coils 11 rotating around their respective axes in the same direction of rotation as the outer coil 4. The synchronized rotation of the peripheral coils 11 simultaneously with the rotation of the outer coil 10 makes it possible to compensate for the excess length of the link 3 and laterally guide the link 3, by means of the threads 13 of the peripheral coils 11, to allow the formation of coherent and progressive turns avoiding the appearance of overlap and excess thickness of the link 3 during the formation of turns that would lead to dysfunction of the device.
Par ailleurs, lors de l'enroulement, ledit lien 3 s'enroule simultanément autour de la bobine centrale 9 fixe et autour de la bobine extérieure 10 en formant le même nombre de spires, lesdites spires étant de même direction. Le dispositif suivant l'invention permet un parfait enroulement du lien sur la bobine extérieure 10 et la bobine centrale 9 en compensant la torsion et sans nécessiter de surlongueur de compensation de la torsion et d'extension du lien.Furthermore, during winding, said link 3 winds simultaneously around the fixed central coil 9 and around the outer coil 10 forming the same number of turns, said turns being of the same direction. The device according to the invention allows a perfect winding of the link on the outer spool 10 and the central spool 9 compensating the torsion and without requiring extra length of compensation of the torsion and extension of the link.
Lorsque le lien 3 est déroulé, le dispositif ne comporte qu'une longueur minimale de lien 3 entre la bobine centrale 9, qui ne comporte plus aucune spire, et les moyens de guidage 2 dudit lien. Cette longueur de lien 3 correspond à la longueur nécessaire de frettage et de jonction entre la bobine centrale 9 et la bobine périphérique 11 de la zone de retournement dudit lien 3.When the link 3 is unwound, the device has only a minimum link length 3 between the central coil 9, which no longer comprises any turn, and the guide means 2 of said link. This link length 3 corresponds to the necessary length of hooping and junction between the central coil 9 and the peripheral coil 11 of the reversal zone of said link 3.
On entend par longueur de frettage, la longueur de lien 3 nécessaire pour le frettage dudit lien 3, c'est-à-dire la longueur de lien 3 nécessaire pour assurer sa fixation sur la bobine centrale 9. On notera que les moyens de fixation du lien 3, non représentés sur les figures, pourront consister dans tout moyen de fixation bien connu de l'Homme de Métier et apte à procurer la fixation du lien sans le détériorer.The term "hooping length" is understood to mean the link length 3 necessary for the hooping of said link 3, that is to say the length of link 3 necessary to secure it to the central coil 9. It will be noted that the fastening means link 3, not shown in the figures, may consist in any fastening means well known to those skilled in the art and capable of providing the attachment of the link without damaging it.
Par ailleurs, il est bien évident que la présente invention n'est nullement limitée à la forme de réalisation décrite et représentée, mais l'homme de l'art saura y apporter toute variante ou modification conforme à l'esprit de l'invention.Furthermore, it is obvious that the present invention is not limited to the embodiment described and shown, but the skilled person will be able to make any variant or modification within the spirit of the invention.
Enfin, il va de soi que l'invention pourra s'appliquer à toute situation où deux extrémités d'un lien doivent pouvoir tourner l'une par rapport à l'autre sans y induire de torsion, et notamment aux enrouleurs-dérouleurs de câbles mécaniques ou motorisés sans joint tournant. Finally, it goes without saying that the invention can be applied to any situation where two ends of a link must be able to rotate relative to each other without inducing torsion, and in particular to cable rewinders mechanical or motorized without rotary joint.

Claims

REVENDICATIONS
1. Dispositif pour annuler la torsion d'un lien entre une extrémité fixe et une extrémité tournante de celui-ci, comportant d'une part une bobine centrale (9) recevant une première section variable du lien (3) adjacente à l'une de ses extrémités, ledit lien (3) étant enroulé autour de la bobine centrale (9) en formant des spires, et d'autre part une bobine extérieure (10) coaxiale à la bobine centrale (9) et recevant une seconde section variable du lien (3) adjacente à son autre extrémité de telle sorte que la seconde section variable du lien (3) soit enroulée autour de la bobine extérieure (10) en formant des spires, ledit dispositif étant caractérisé en ce qu'il comporte des moyens aptes à maintenir le lien (3) s'étendant depuis son extrémité libre jusqu'au point de tangence de la bobine extérieure (10) le long d'une droite D globalement orthogonale à l'axe de rotation de la bobine extérieure (10) lors de l'enroulement et/ou le déroulement dudit lien (3).1. Device for canceling the torsion of a link between a fixed end and a rotating end thereof, comprising on the one hand a central coil (9) receiving a first variable section of the link (3) adjacent to one at its ends, said link (3) being wound around the central spool (9) by forming turns, and secondly an outer spool (10) coaxial with the central spool (9) and receiving a second variable section of the spool. link (3) adjacent to its other end so that the second variable section of the link (3) is wound around the outer coil (10) forming turns, said device being characterized in that it comprises suitable means maintaining the link (3) extending from its free end to the point of tangency of the outer coil (10) along a straight line D substantially orthogonal to the axis of rotation of the outer coil (10) when winding and / or unwinding said link (3).
2. Dispositif suivant la revendication précédente caractérisé en ce qu'il comporte des moyens pour enrouler le lien (3) autour de la bobine extérieure (10) en formant des spires de même direction que celles de la bobine centrale (9). 2. Device according to the preceding claim characterized in that it comprises means for winding the link (3) around the outer coil (10) forming turns of the same direction as those of the central coil (9).
3. Dispositif suivant l'une quelconque des revendications 1 ou 2 caractérisé en ce que la bobine centrale (9) est fixe et en ce que ladite bobine extérieure (10) est constituée par une pluralité de bobines dites périphériques (11 ) filetées disposées sensiblement sur un cercle extérieur à la bobine centrale (9) et régulièrement répartis sur ce cercle, lesdites bobines périphériques (11 ) étant entraînées en rotation autour de leurs axes respectifs dans le même sens de rotation que celui de la bobine extérieure (10), et des moyens de transmission pour provoquer simultanément la rotation de la bobine extérieure (10) et des bobines périphériques (11 ) de ladite bobine extérieure (10) de telle sorte que la seconde section du lien (3) soit enroulée autour de la bobine extérieure (10) en formant des spires de même direction que celles de la bobine centrale (9).3. Device according to any one of claims 1 or 2 characterized in that the central coil (9) is fixed and in that said outer coil (10) is constituted by a plurality of so-called peripheral coil (11) threaded arranged substantially on a circle outside the central coil (9) and regularly distributed on this circle, said peripheral coils (11) being rotated about their respective axes in the same direction of rotation as that of the outer coil (10), and transmission means for simultaneously causing rotation of the outer coil (10) and the peripheral coils (11) of said outer coil (10) so that the second section of the link (3) is wound around the outer coil ( 10) by forming turns of the same direction as those of the central coil (9).
4. Dispositif suivant l'une quelconque des revendications 1 à 3 caractérisé en ce que la bobine centrale (9) consiste en un cylindre lisse.4. Device according to any one of claims 1 to 3 characterized in that the central coil (9) consists of a smooth cylinder.
5. Dispositif suivant la revendication 4 caractérisé en ce que la bobine centrale (9) comporte un élément résilient recouvrant la périphérie extérieure de ladite bobine centrale (9). 5. Device according to claim 4 characterized in that the central coil (9) comprises a resilient element covering the outer periphery of said central coil (9).
6. Dispositif suivant l'une quelconque des revendications 3 à 5 caractérisé en ce que chaque bobine périphérique (1 1 ) comporte un filetage hélicoïdal (13) de pas déterminé.6. Device according to any one of claims 3 to 5 characterized in that each peripheral coil (1 1) comprises a helical thread (13) of determined pitch.
7. Dispositif suivant la revendication 6 caractérisé en ce que la distance séparant deux filets successifs du filetage (13) est au moins égale à la largeur du lien (3).7. Device according to claim 6 characterized in that the distance separating two successive threads of the thread (13) is at least equal to the width of the link (3).
8. Dispositif suivant l'une quelconque des revendications 6 ou 7 caractérisé en ce que l'axe de chaque bobine périphérique filetée (10) forme un angle avec l'axe de la bobine centrale (9) fixe. 8. Device according to any one of claims 6 or 7 characterized in that the axis of each threaded peripheral coil (10) forms an angle with the axis of the central coil (9) fixed.
9. Dispositif suivant la revendication 8 caractérisé en ce que ledit angle formé entre l'axe de chaque bobine périphérique filetée (10) et l'axe de la bobine centrale (9) est sensiblement égal à l'angle du filetage desdites bobines périphériques filetées (10).9. Device according to claim 8 characterized in that said angle formed between the axis of each threaded peripheral coil (10) and the axis of the central coil (9) is substantially equal to the thread angle of said threaded peripheral coils (10).
10. Dispositif suivant l'une quelconque des revendications 1 à 9 caractérisé en ce qu'il comporte un moyen de rappel de la bobine extérieure opérant dans le sens de l'enroulement.10. Device according to any one of claims 1 to 9 characterized in that it comprises a return means of the outer coil operating in the direction of winding.
1 1 . Dispositif suivant la revendication 10 caractérisé en ce qu'il comporte un mécanisme à rochet (20) constitué d'un cliquet (100,206) de telle manière qu'à chaque traction sur le lien (3) sur une longueur déterminée le cliquet (100,206) passe d'une position d'arrêt dans laquelle il coopère avec une dent d'un disque cranté (12) portant les bobines périphériques (1 1 ) de la bobine extérieure (10) pour s'opposer à la force de rappel, à une position de libération dans laquelle ledit cliquet (100,206) est désengagé des dents du disque cranté (12) pour ne pas s'opposer à ladite force et inversement. 1 1. Device according to claim 10 characterized in that it comprises a ratchet mechanism (20) consisting of a pawl (100,206) so that each pull on the link (3) over a predetermined length of the ratchet (100,206) passing from a stop position in which it cooperates with a tooth of a notched disc (12) carrying the peripheral coils (1 1) of the outer coil (10) to oppose the restoring force, at a release position in which said pawl (100,206) is disengaged from the teeth of the notched disk (12) so as not to oppose said force and vice versa.
12. Dispositif suivant la revendication 1 1 caractérisé en ce que le cliquet (100,206) consiste en un levier (101 ,207) monté libre en rotation autour d'un axe solidaire d'une armature fixe portant la bobine centrale (9) et la bobine extérieure (10), à proximité du disque cranté (12) portant les bobines périphériques (1 1 ) de la bobine extérieure (10), et coopérant avec des moyens de liaison glissante à frottement (1 1 1 ,209) coopérant avec le disque cranté et respectivement des moyens d'indexation (105,21 1 ) du cliquet (100,206).12. Device according to claim 1 1 characterized in that the pawl (100,206) consists of a lever (101, 207) mounted free to rotate about an axis integral with a fixed armature carrying the central coil (9) and the outer coil (10), close to the notched disc (12) carrying the peripheral coils (1 1) of the outer coil (10), and cooperating with friction sliding connection means (1 1 1, 209) cooperating with the notched disk and indexing means (105,21 1) respectively of the pawl (100,206).
13. Dispositif suivant la revendication 12 caractérisé en ce que les moyens de liaison glissante à frottement consistent en au moins une pièce (1 1 1 ,209) aimantée de manière permanente. 13. Device according to claim 12 characterized in that the friction sliding connection means consist of at least one piece (1 1 1, 209) magnetized permanently.
14. Dispositif suivant la revendication 13 caractérisé en ce que la pièce aimantée (1 1 1 ) est solidaire d'une navette (108) apte à se déplacer suivant une trajectoire circulaire centrée sur l'axe de rotation du disque cranté (12) et portant les moyens d'indexation (105), ladite pièce aimantée (111 ) prenant appui sur au moins l'un des flancs du disque cranté (12) obtenue dans un matériau ferreux. 14. Apparatus according to claim 13 characterized in that the magnetized piece (1 1 1) is integral with a shuttle (108) adapted to move in a manner. circular trajectory centered on the axis of rotation of the notched disk (12) and carrying the indexing means (105), said magnetized part (111) bearing on at least one of the sides of the notched disc (12) obtained in a ferrous material.
15. Dispositif selon l'une quelconque des revendications 12 à 14 caractérisé en ce que les moyens de liaison glissante à frottement (111 ) coopèrent avec le disque cranté (12) de telle sorte que, le cliquet (100) étant dans sa position initiale d'arrêt où l'une des extrémités libres du levier (101 ) formant crochet coopère avec une dent du disque cranté (12), la traction sur le lien (3) sur une longueur déterminée entraînant la rotation du disque cranté (12) procure la rotation du levier (101 ) suivant un sens de rotation inverse afin de désengager l'extrémité libre du levier (101 ) des dents du disque cranté (12), les moyens d'indexation (105) maintenant l'extrémité libre du levier (101 ) désengagée des dents du disque cranté (12) lorsque la traction du lien (3) est relâchée, puis une seconde traction sur le lien (3) sur une longueur déterminée entraîne la rotation du disque cranté (12) et simultanément la rotation du levier (101 ) suivant un sens de rotation inverse afin de libérer les moyens d'indexation (105) de manière à ce que, lorsque la traction du lien (3) est relâchée, le moyen de rappel de la bobine extérieure (10) entraîne en rotation en sens inverse le disque cranté (12) qui procure la rotation dans le sens opposé du levier (101 ) jusqu'à ce que l'extrémité libre de ce dernier coopère avec une dent dudit disque cranté (12) afin de s'opposer à la force du moyen de rappel.15. Device according to any one of claims 12 to 14 characterized in that the friction sliding connection means (111) cooperate with the notched disk (12) so that, the pawl (100) being in its initial position for stopping where one of the free ends of the hook lever (101) cooperates with a tooth of the notched disk (12), the pulling on the link (3) over a predetermined length causing rotation of the notched disc (12) provides the rotation of the lever (101) in a reverse direction of rotation to disengage the free end of the lever (101) from the teeth of the notched disc (12), the indexing means (105) holding the free end of the lever ( 101) disengaged from the teeth of the notched disk (12) when the traction of the link (3) is released, then a second pull on the link (3) over a predetermined length causes the notched disc (12) to rotate and simultaneously the rotation of the lever (101) in a direction of r reverse rotation to release the indexing means (105) so that, when the pull of the link (3) is released, the return means of the outer coil (10) rotates the notched disc in the opposite direction (12) which provides rotation in the opposite direction of the lever (101) until the free end thereof cooperates with a tooth of said notched disc (12) to oppose the force of the biasing means .
16. Dispositif selon l'une quelconque des revendications 14 à 15 caractérisé en ce que les moyens d'indexation (105) consistent en une pièce (106) rectangulaire dont les bords longitudinaux et transversaux sont concaves pour former une pièce globalement en forme de croix à quatre branches montée libre en rotation autour d'un axe (107) solidaire de la navette (108), les extrémités libres des branches étant aptes à coopérer avec un ergot (104) du levier (101 ). 16. Device according to any one of claims 14 to 15 characterized in that the indexing means (105) consist of a rectangular part (106) whose longitudinal and transverse edges are concave to form a generally cross-shaped part. four-branched freely rotatable about an axis (107) integral with the shuttle (108), the free ends of the branches being adapted to cooperate with a lug (104) of the lever (101).
PCT/EP2007/059020 2006-08-29 2007-08-29 Device for eliminating the torsion in a tie between a fixed end and a turning end WO2008025810A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR06/07583 2006-08-29
FR0607583A FR2905366B1 (en) 2006-08-29 2006-08-29 DEVICE FOR CANCELING THE TORSION OF A CONNECTION BETWEEN A FIXED END AND A ROTATING END

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EP2548831A3 (en) * 2011-07-21 2013-11-06 Karl Storz GmbH & Co. KG Conduit reservoir for holding an electrical, optical or fluid conduit
EP2768100A1 (en) * 2013-02-14 2014-08-20 Haworth, Inc. Cable retractor

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US2976959A (en) * 1957-04-29 1961-03-28 American Machine & Metals Ratchet device
US3590656A (en) * 1969-12-24 1971-07-06 Wilsons Sons Inc William M Ratchet device for hose reel
CA1041977A (en) * 1977-01-04 1978-11-07 Indicel Co. Ltd. Cord winder
EP0044357A1 (en) * 1980-07-23 1982-01-27 Ir. H.M.W. Croese Raadgevend Ingenieursbureau B.V. Satellite reel
JPS62191382A (en) * 1986-02-13 1987-08-21 Tachikaho Sangyo Kk Cord reel
JPH0984244A (en) * 1995-09-13 1997-03-28 Nec Eng Ltd Cable winding mechanism
JP2000063047A (en) * 1998-08-25 2000-02-29 Marusu Denshi:Kk Cord relay device and cord reel device employing said cord relay device

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FR576849A (en) * 1924-02-06 1924-08-27 Winding device
US2976959A (en) * 1957-04-29 1961-03-28 American Machine & Metals Ratchet device
US3590656A (en) * 1969-12-24 1971-07-06 Wilsons Sons Inc William M Ratchet device for hose reel
CA1041977A (en) * 1977-01-04 1978-11-07 Indicel Co. Ltd. Cord winder
EP0044357A1 (en) * 1980-07-23 1982-01-27 Ir. H.M.W. Croese Raadgevend Ingenieursbureau B.V. Satellite reel
JPS62191382A (en) * 1986-02-13 1987-08-21 Tachikaho Sangyo Kk Cord reel
JPH0984244A (en) * 1995-09-13 1997-03-28 Nec Eng Ltd Cable winding mechanism
JP2000063047A (en) * 1998-08-25 2000-02-29 Marusu Denshi:Kk Cord relay device and cord reel device employing said cord relay device

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EP2548831A3 (en) * 2011-07-21 2013-11-06 Karl Storz GmbH & Co. KG Conduit reservoir for holding an electrical, optical or fluid conduit
US8899507B2 (en) 2011-07-21 2014-12-02 Karl Storz Gmbh & Co. Kg Conduit reservoir for intake of an electrical, optical or fluid conduit
EP2768100A1 (en) * 2013-02-14 2014-08-20 Haworth, Inc. Cable retractor
CN104044962A (en) * 2013-02-14 2014-09-17 霍沃思公司 Cable retractor
US9327938B2 (en) 2013-02-14 2016-05-03 Haworth, Inc. Cable retractor

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FR2905366B1 (en) 2008-12-05

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