EP2508095A1 - Magnetic attachment loop with permanent magnets and mechanical locking - Google Patents

Magnetic attachment loop with permanent magnets and mechanical locking Download PDF

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Publication number
EP2508095A1
EP2508095A1 EP12354026A EP12354026A EP2508095A1 EP 2508095 A1 EP2508095 A1 EP 2508095A1 EP 12354026 A EP12354026 A EP 12354026A EP 12354026 A EP12354026 A EP 12354026A EP 2508095 A1 EP2508095 A1 EP 2508095A1
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EP
European Patent Office
Prior art keywords
loop
plug
permanent magnet
receiving element
magnetic
Prior art date
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Granted
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EP12354026A
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German (de)
French (fr)
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EP2508095B1 (en
Inventor
Antonin Gaudillere
Alain Maurice
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Zedel SAS
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Zedel SAS
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Publication of EP2508095A1 publication Critical patent/EP2508095A1/en
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    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B11/00—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts
    • A44B11/25—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts with two or more separable parts
    • A44B11/26—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts with two or more separable parts with push-button fastenings
    • A44B11/266—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts with two or more separable parts with push-button fastenings with at least one push-button acting parallel to the main plane of the buckle and perpendicularly to the direction of the fastening action
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/32—Buckles, buttons, clasps, etc. having magnetic fastener

Definitions

  • the document WO 2008/006355 discloses an attachment loop having a permanent magnet, and a pair of locking levers on one of the coupling members.
  • the other coupling element is equipped with a ferromagnetic fixed yoke mounted transversely in a groove extending perpendicularly to the coupling direction of the two elements.
  • the magnetic flux of the permanent magnet is channeled through the yoke, causing a magnetic attraction between the elements, followed by mechanical locking in the closed state of the loop.
  • the magnetic attraction effect remains insufficient because of the magnetic field moderate of the magnet. It is then necessary to guide the movable element over a distance, to the detriment of the bulk of the loop.
  • the object of the invention is to provide a magnetic coupling loop with quick engagement, and reduced space.
  • the fastening buckle according to the invention is characterized in that the body of the first plug-in element comprises a pair of guide pins protruding on either side of a first housing orifice of the first permanent magnet, the two guide lugs being parallel with respect to the longitudinal axis of the loop, and the second receiving element being provided with a flat support plate, the assembly being able to ensure a self-centering effect of the first plug-in element in said longitudinal direction.
  • This magnetic self-centering effect results in addition to the distribution of the lines of force of the magnetic fields of the two magnets, which are in opposite directions on either side of the longitudinal axis.
  • the uniform magnetic attraction in the gap between the two permanent magnets tends to axially move the first plug-in element until it comes into contact with the second receiver element.
  • the maintenance by magnetic attraction of the loop in the closed position is confirmed by the mechanical locking of the locking arms in the cap.
  • the two permanent magnets are formed by cylindrical pins with axial polarization, and extending in alignment with the longitudinal axis.
  • the cap of the second receiver element is provided with a pair of recesses arranged on either side of a second housing orifice of the second permanent magnet, the recesses being intended to receive in the closed position of attraction, said lugs guide, as well as stops provided at the ends of the locking arms.
  • Permanent magnets can be made of a ferrous material (iron, steel, nickel, cobalt, etc.) or ferrite.
  • a magnetic fastening loop 10 comprises a first plug-in element 11 intended to be introduced into a second receiving element 12 to close the fastening loop 10.
  • the first plug-in element 11 comprises a molded plastic body 13 having, at one end, a first slotted device 14 for the passage of a strap, a pair of locking arms 15, 16 coplanically extending along opposite sides, and a first permanent magnet 17 housed in a first central orifice 18 of the body 13 between the two locking arms 15, 16.
  • One end of each locking arm 15, 16 is secured to the door-to -false to the body 13 to allow lateral elastic deformation during the manual unlocking phase.
  • the second receiving element 12 is equipped with a flat support plate 19 surmounted by a cap 20 delimiting an open space 21 for receiving the locking arms 15, 16, and a second orifice 22 in which a second permanent magnet is housed. 23.
  • a second slot device 24 is provided at the rear of the cap 20 for the passage of the other end of the strap.
  • the two permanent magnets 17, 23 are formed as examples by cylindrical studs magnetized magnetic material, said pads being aligned along the longitudinal axis XY.
  • the permanent magnets 17, 23 may be made of a ferrous material (iron, steel, nickel, cobalt, etc.) or ferrite.
  • Each permanent magnet 17, 23 comprises a pole N and a pole S, located respectively at each end of the pads.
  • the poles of the two permanent magnets 17, 23 facing each other, have opposite magnetic polarities, so as to create a magnetic attraction effect between them.
  • the pole N of the first permanent magnet 17 is positioned axially facing the pole S of the second permanent magnet 23.
  • the lines the force of the magnetic field leaving the pole N of the first permanent magnet 17 are in the opposite direction with those entering the pole S of the second permanent magnet 23. This results in a magnetic attraction between the two magnets 17, 23, and the coming into contact of the two elements 11, 12 corresponding to the closed position of the loop (illustrated in FIG. figure 6 ).
  • the two locking arms 15, 16 have identical profiles and symmetrical with respect to the vertical median plane having as a trace the longitudinal axis XY.
  • Each elastic locking arm 15, 16 is composed of a gripping sector 24, and a guide surface 25 terminating at the free end by a stop 26.
  • the body 13 further comprises two guide lugs 30 projecting on either side of the first orifice 18 of the magnet 17 so as to contribute to the longitudinal centering of the first plug-in element 11.
  • the cap 20 of the second receiver element 12 is provided with a pair of recesses 27 disposed on either side of the second orifice 22 of the magnet 23.
  • the stop 26 of each locking arm 15, 16, and the guide pins 30 engage in the corresponding recesses 27 of the cap 20 to ensure both the centering and the mechanical locking in the closed position.
  • the input of the support plate 19 is advantageously provided with a positioning notch 28 in which axially a protrusion 29 for guiding the body 13 during the magnetic attraction stroke is inserted axially.
  • the system of the two magnets 17, 23 generates magnetic repulsion fields in the air gap capable of restoring axial guidance in the longitudinal direction XY.

Abstract

The buckle (10) has a plug-in element (11) provided with a permanent magnet (17) and locking arms (15, 16) that occupy locked and unlocked positions. A receiving element (12) includes an open space (21) into which the plug-in element is enclosed by magnetic attraction. A body (13) of the plug-in element has a pair of guiding pins (30) protruding on sides of central opening (18) housing the magnet. The pins are parallel to a longitudinal axis of the buckle and the receiving element is provided with a flat support plate (19) to ensure a self-centering effect of the plug-in element in the axis.

Description

Domaine technique de l'inventionTechnical field of the invention

L'invention concerne une boucle d'attache magnétique comprenant :

  • un premier élément à enfichage équipé d'un premier aimant permanent et d'au moins un bras de verrouillage destiné à occuper une position verrouillée lors de la fermeture de la boucle, et une position déverrouillée pour l'ouverture de la boucle,
  • un deuxième élément récepteur ayant un espace ouvert dans lequel s'engage le premier élément à enfichage par attraction magnétique, ledit deuxième élément récepteur comportant un deuxième aimant permanent tel que les pôles juxtaposés des deux aimants en regard l'un avec l'autre présentent des polarités magnétiques opposées.
The invention relates to a magnetic fastening loop comprising:
  • a first plug-in element equipped with a first permanent magnet and at least one locking arm intended to occupy a locked position when closing the loop, and an unlocked position for opening the loop,
  • a second receiver element having an open space in which the first magnetic attraction plug element engages, said second receiver element comprising a second permanent magnet such that the juxtaposed poles of the two magnets facing each other have opposite magnetic polarities.

État de la techniqueState of the art

Le document WO 2008/006355 décrit une boucle d'attache ayant un aimant permanent, et une paire de leviers de verrouillage sur l'un des éléments d'accouplement. L'autre élément d'accouplement est équipé d'une culasse fixe ferromagnétique logée transversalement dans une rainure s'étendant perpendiculairement à la direction d'accouplement des deux éléments. Le flux magnétique de l'aimant permanent est canalisé par la culasse, provoquant une attraction magnétique entre les éléments, suivi d'un verrouillage mécanique dans l'état fermé de la boucle. L'effet d'attraction magnétique reste néanmoins insuffisant à cause du champ magnétique modéré de l'aimant. Il est alors nécessaire de guider l'élément mobile sur une certaine distance, au détriment de l'encombrement de la boucle.The document WO 2008/006355 discloses an attachment loop having a permanent magnet, and a pair of locking levers on one of the coupling members. The other coupling element is equipped with a ferromagnetic fixed yoke mounted transversely in a groove extending perpendicularly to the coupling direction of the two elements. The magnetic flux of the permanent magnet is channeled through the yoke, causing a magnetic attraction between the elements, followed by mechanical locking in the closed state of the loop. The magnetic attraction effect remains insufficient because of the magnetic field moderate of the magnet. It is then necessary to guide the movable element over a distance, to the detriment of the bulk of the loop.

Le document WO 2009/103279 mentionne une boucle d'attache magnétique équipée de deux aimants permanents de polarités opposées. Le centrage de l'élément d'enfichage nécessite néanmoins des moyens difficiles à mettre en oeuvre.The document WO 2009/103279 mentions a magnetic attachment loop equipped with two permanent magnets of opposite polarities. The centering of the plugging element nevertheless requires means that are difficult to implement.

Objet de l'inventionObject of the invention

L'objet de l'invention consiste à réaliser une boucle d'attache magnétique à enclenchement rapide, et à encombrement réduit.The object of the invention is to provide a magnetic coupling loop with quick engagement, and reduced space.

La boucle d'attache selon l'invention est caractérisée en ce que le corps du premier élément à enfichage comporte une paire d'ergots de guidage faisant saillie de part et d'autre d'un premier orifice de logement du premier aimant permanent, les deux ergots de guidage étant parallèles par rapport à l'axe longitudinal de la boucle, et le deuxième élément récepteur étant doté d'une plaque d'appui plane, l'ensemble étant apte à assurer un effet d'autocentrage du premier élément à enfichage dans ladite direction longitudinale.The fastening buckle according to the invention is characterized in that the body of the first plug-in element comprises a pair of guide pins protruding on either side of a first housing orifice of the first permanent magnet, the two guide lugs being parallel with respect to the longitudinal axis of the loop, and the second receiving element being provided with a flat support plate, the assembly being able to ensure a self-centering effect of the first plug-in element in said longitudinal direction.

Cet effet d'autocentrage magnétique résulte en plus de la répartition des lignes de force des champs magnétiques des deux aimants, lesquelles sont de sens contraire de part et d'autre de l'axe longitudinal. L'attraction magnétique uniforme dans l'entrefer entre les deux aimants permanents, tend à déplacer axialement le premier élément à enfichage jusqu'à sa venue en contact avec le deuxième élément récepteur. Le maintien par attraction magnétique de la boucle en position fermée est confirmé par le blocage mécanique des bras de verrouillage dans le chapeau.This magnetic self-centering effect results in addition to the distribution of the lines of force of the magnetic fields of the two magnets, which are in opposite directions on either side of the longitudinal axis. The uniform magnetic attraction in the gap between the two permanent magnets, tends to axially move the first plug-in element until it comes into contact with the second receiver element. The maintenance by magnetic attraction of the loop in the closed position is confirmed by the mechanical locking of the locking arms in the cap.

Selon un mode de réalisation préférentiel, les deux aimants permanents sont formés par des plots cylindriques à polarisation axiale, et s'étendant en alignement avec l'axe longitudinal. Le chapeau du deuxième élément récepteur est doté d'une paire d'évidements disposés de part et d'autre d'un deuxième orifice de logement du deuxième aimant permanent, les évidements étant destinés à recevoir en position de fermeture d'attraction, lesdits ergots de guidage, ainsi que des butées prévues aux extrémités des bras de verrouillage.According to a preferred embodiment, the two permanent magnets are formed by cylindrical pins with axial polarization, and extending in alignment with the longitudinal axis. The cap of the second receiver element is provided with a pair of recesses arranged on either side of a second housing orifice of the second permanent magnet, the recesses being intended to receive in the closed position of attraction, said lugs guide, as well as stops provided at the ends of the locking arms.

Les aimants permanents peuvent être réalisés en un matériau ferreux (fer, acier, nickel, cobalt, etc..) ou en ferrite.Permanent magnets can be made of a ferrous material (iron, steel, nickel, cobalt, etc.) or ferrite.

Description sommaire des dessinsBrief description of the drawings

D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre d'un mode de réalisation de l'invention donné à titre d'exemple non limitatif et représenté aux dessins annexés, dans lesquels :

  • la figure 1 est une vue en perspective de la boucle d'attache selon l'invention, représentée dans l'état désaccouplé ;
  • la figure 2 montre une vue identique de la figure 1, lors de la phase d'accouplement de la boucle ;
  • les figures 3 à 6 représentent des vues en plan de la boucle, respectivement en position d'ouverture au début de la phase d'insertion, puis lors du déplacement progressif par attraction magnétique le long de la plaque d'appui, et en fin de course de fermeture après verrouillage mécanique ;
  • les figures 7 et 8 sont des vues en perspective de dessous de la boucle, respectivement en position désaccouplée, et lors de l'insertion ;
  • la figure 9 montre une vue de profil de la boucle en position de fermeture.
Other advantages and features will emerge more clearly from the following description of an embodiment of the invention given by way of non-limiting example and represented in the accompanying drawings, in which:
  • the figure 1 is a perspective view of the fastening buckle according to the invention, shown in the uncoupled state;
  • the figure 2 shows an identical view of the figure 1 during the coupling phase of the loop;
  • the Figures 3 to 6 represent plane views of the loop, respectively in the open position at the beginning of the insertion phase, and during the progressive displacement by magnetic attraction along the support plate, and at the end of the closing stroke after locking. mechanical ;
  • the figures 7 and 8 are perspective views from below of the loop, respectively in uncoupled position, and during insertion;
  • the figure 9 shows a profile view of the loop in the closed position.

Description détaillée de l'inventionDetailed description of the invention

Sur les figures, une boucle d'attache 10 magnétique comporte un premier élément à enfichage 11 destiné à être introduit dans un deuxième élément récepteur 12 pour assurer la fermeture de la boucle d'attache 10.In the figures, a magnetic fastening loop 10 comprises a first plug-in element 11 intended to be introduced into a second receiving element 12 to close the fastening loop 10.

Le premier élément à enfichage 11 comprend un corps 13 en matière plastique moulée, ayant à l'une des extrémités un premier dispositif à fentes 14 pour le passage d'une sangle, une paire de bras de verrouillage 15, 16 s'étendant coplanairement le long des côtés opposés, et un premier aimant permanent 17 logé dans un premier orifice 18 central du corps 13 entre les deux bras de verrouillage 15, 16. L'une des extrémités de chaque bras de verrouillage 15, 16 est solidarisée en porte-à-faux au corps 13 pour permettre une déformation élastique latérale lors de la phase manuelle de déverrouillage.The first plug-in element 11 comprises a molded plastic body 13 having, at one end, a first slotted device 14 for the passage of a strap, a pair of locking arms 15, 16 coplanically extending along opposite sides, and a first permanent magnet 17 housed in a first central orifice 18 of the body 13 between the two locking arms 15, 16. One end of each locking arm 15, 16 is secured to the door-to -false to the body 13 to allow lateral elastic deformation during the manual unlocking phase.

Le deuxième élément récepteur 12 est équipé d'une plaque d'appui 19 plane surmontée d'un chapeau 20 délimitant un espace 21 ouvert de réception des bras de verrouillage 15, 16, et un deuxième orifice 22 dans lequel est logé un deuxième aimant permanent 23. Un deuxième dispositif à fentes 24 est prévu à l'arrière du chapeau 20 pour le passage de l'autre bout de sangle.The second receiving element 12 is equipped with a flat support plate 19 surmounted by a cap 20 delimiting an open space 21 for receiving the locking arms 15, 16, and a second orifice 22 in which a second permanent magnet is housed. 23. A second slot device 24 is provided at the rear of the cap 20 for the passage of the other end of the strap.

Les deux aimants permanents 17, 23 sont formés à titre d'exemples par des plots cylindriques en matière magnétique aimantée, lesdits plots étant alignés selon l'axe longitudinal XY. Les aimants permanents 17, 23 peuvent être réalisés en un matériau ferreux (fer, acier, nickel, cobalt, etc..) ou en ferrite. Chaque aimant permanent 17, 23 comprend un pôle N et un pôle S, situé respectivement à chaque extrémité des plots. Les pôles des deux aimants permanents 17, 23 se faisant face, présentent des polarités magnétiques opposées, de manière à créer un effet d'attraction magnétique entre eux.The two permanent magnets 17, 23 are formed as examples by cylindrical studs magnetized magnetic material, said pads being aligned along the longitudinal axis XY. The permanent magnets 17, 23 may be made of a ferrous material (iron, steel, nickel, cobalt, etc.) or ferrite. Each permanent magnet 17, 23 comprises a pole N and a pole S, located respectively at each end of the pads. The poles of the two permanent magnets 17, 23 facing each other, have opposite magnetic polarities, so as to create a magnetic attraction effect between them.

Comme le montre à titre d'exemple la figure 5, le pôle N du premier aimant permanent 17 est positionné axialement en regard du pôle S du deuxième aimant permanent 23. Lors du mouvement de rapprochement des deux éléments 11 et 12 dans le plan horizontal parallèle à la plaque d'appui 19, les lignes de force du champ magnétique sortant du pôle N du premier aimant permanent 17 sont de sens inverse avec celles rentrant dans le pôle S du deuxième aimant permanent 23. Il en résulte une attraction magnétique entre les deux aimants 17, 23, et la venue en contact des deux éléments 11, 12 correspondant à la position de fermeture de la boucle ( illustrée à la figure 6).As shown by way of example figure 5 , the pole N of the first permanent magnet 17 is positioned axially facing the pole S of the second permanent magnet 23. During the movement of bringing the two elements 11 and 12 into the horizontal plane parallel to the support plate 19, the lines the force of the magnetic field leaving the pole N of the first permanent magnet 17 are in the opposite direction with those entering the pole S of the second permanent magnet 23. This results in a magnetic attraction between the two magnets 17, 23, and the coming into contact of the two elements 11, 12 corresponding to the closed position of the loop (illustrated in FIG. figure 6 ).

Les deux bras de verrouillage 15, 16 présentent des profils identiques et symétriques par rapport au plan médian vertical ayant comme trace l'axe longitudinal XY. Chaque bras de verrouillage 15, 16 élastique est composé d'un secteur de préhension 24, et d'une surface de guidage 25 se terminant à l'extrémité libre par une butée 26.The two locking arms 15, 16 have identical profiles and symmetrical with respect to the vertical median plane having as a trace the longitudinal axis XY. Each elastic locking arm 15, 16 is composed of a gripping sector 24, and a guide surface 25 terminating at the free end by a stop 26.

Le corps 13 comporte en plus deux ergots de guidage 30 faisant saillie de part et d'autre du premier orifice 18 de l'aimant 17 de manière à contribuer au centrage longitudinal du premier élément à enfichage 11.The body 13 further comprises two guide lugs 30 projecting on either side of the first orifice 18 of the magnet 17 so as to contribute to the longitudinal centering of the first plug-in element 11.

Le chapeau 20 du deuxième élément récepteur 12 est doté d'une paire d'évidements 27 disposés de part et d'autre du deuxième orifice 22 de l'aimant 23. En fin de course de fermeture de la boucle, la butée 26 de chaque bras de verrouillage 15, 16, et les ergots de guidage 30 s'engagent dans les évidements 27 correspondants du chapeau 20 pour assurer à la fois le centrage et le verrouillage mécanique en position de fermeture.The cap 20 of the second receiver element 12 is provided with a pair of recesses 27 disposed on either side of the second orifice 22 of the magnet 23. At the end of the closing stroke of the loop, the stop 26 of each locking arm 15, 16, and the guide pins 30 engage in the corresponding recesses 27 of the cap 20 to ensure both the centering and the mechanical locking in the closed position.

L'entrée de la plaque d'appui 19 est munie avantageusement d'une encoche 28 de positionnement dans laquelle s'insère axialement une protubérance 29 de guidage du corps 13 pendant la course d'attraction magnétique.The input of the support plate 19 is advantageously provided with a positioning notch 28 in which axially a protrusion 29 for guiding the body 13 during the magnetic attraction stroke is inserted axially.

La fermeture et l'ouverture de la boucle d'attache 10 magnétique s'effectuent de la manière suivante :

  • A partir de la position d'ouverture représentée à la figure 3, il suffit d'approcher le premier élément à enfichage 11 du deuxième élément récepteur 12 pour que s'établisse l'attraction magnétique entre les deux aimants permanents 17, 23. Les deux bras de verrouillage 15, 16 se déplacent au-dessus de la plaque d'appui 19 en direction du chapeau 20, l'attraction magnétique augmentant avec la diminution de l'entrefer entre les deux aimants 17, 23.
The closing and opening of the magnetic fastening loop is carried out as follows:
  • From the open position represented at figure 3 it is sufficient to approach the first plug-in element 11 of the second receiving element 12 so that the magnetic attraction between the two permanent magnets 17, 23 is established. The two locking arms 15, 16 move over the support plate 19 towards the cap 20, the magnetic attraction increasing with the decrease of the gap between the two magnets 17, 23.

Dans la position centrée de la figure 5, on note que les lignes de force des champs magnétiques des deux aimants 17, 23 sont de sens contraire de part et d'autre de l'axe longitudinal XY. L'attraction magnétique est ainsi uniforme dans la totalité de l'entrefer, et permet un déplacement axial du premier élément à enfichage 11 jusqu'à sa venue en contact avec le deuxième élément récepteur 12 (figure 6). Dans cette position fermée de la boucle, les ergots 30 de guidage et les butées 30 sont insérés dans les évidements 27, et la protubérance 29 est logée dans l'encoche 28. Le maintien magnétique de la boucle en position fermée est en plus confirmé par le blocage mécanique des bras de verrouillage 15, 16 dans le chapeau 20.In the centered position of the figure 5 it is noted that the magnetic field of force lines of the two magnets 17, 23 are in opposite directions on either side of the longitudinal axis XY. The magnetic attraction is thus uniform throughout the air gap, and allows axial displacement of the first plug-in element 11 until it comes into contact with the second receiver element 12 ( figure 6 ). In this closed position of the loop, the guide pins 30 and the stops 30 are inserted into the recesses 27, and the protrusion 29 is housed in the notch 28. The magnetic retention of the loop in the closed position is further confirmed by the mechanical locking of the locking arms 15, 16 in the cap 20.

Il est indispensable que le rapprochement du premier élément à enfichage 11 se fasse le long et au-dessus de la plaque d'appui 19 du deuxième élément récepteur 12. En cas d'une inclinaison ou d'un positionnement aléatoire du premier élément à enfichage 11, le système des deux aimants 17, 23 engendre des champs magnétiques de répulsion dans l'entrefer susceptibles de rétablir un guidage axial dans la direction longitudinale XY.It is essential that the approximation of the first plug-in element 11 takes place along and above the support plate 19 of the second receiving element 12. In the event of inclination or random positioning of the first plug-in element 11, the system of the two magnets 17, 23 generates magnetic repulsion fields in the air gap capable of restoring axial guidance in the longitudinal direction XY.

Pour ouvrir la boucle, il suffit de pincer latéralement entre deux doigts les bras de verrouillage 15, 16 dans les sens opposés des flèches F1 et F2 pour assurer le déverrouillage mécanique. On exerce ensuite une traction axiale manuelle sur le premier élément à enfichage 11 en l'éloignant du deuxième élément récepteur 12, la force de traction étant opposée et supérieure à la force d'attraction magnétique des aimants 17, 23.To open the loop, it is sufficient to pinch laterally between two fingers the locking arms 15, 16 in opposite directions of the arrows F1 and F2 to ensure mechanical unlocking. Axial traction is then exerted manually on the first plug-in element 11 away from the second receiving element 12, the pulling force being opposite and greater than the magnetic attraction force of the magnets 17, 23.

Claims (4)

Boucle d'attache magnétique comprenant : - un premier élément à enfichage (11) équipé d'un premier aimant permanent (17) et d'une paire de bras de verrouillage (15, 16) destinée à occuper une position verrouillée lors de la fermeture de la boucle, et une position déverrouillée pour l'ouverture de la boucle, - un deuxième élément récepteur (12) ayant un espace (21) ouvert dans lequel s'engage le premier élément à enfichage par attraction magnétique, ledit deuxième élément récepteur (12) comportant un deuxième aimant permanent (23) tel que les pôles juxtaposés des deux aimants en regard l'un avec l'autre présentent des polarités magnétiques opposées, caractérisée en ce que : le corps (13) du premier élément à enfichage (11) comporte une paire d'ergots de guidage (30) faisant saillie de part et d'autre d'un premier orifice (18) de logement du premier aimant permanent (17), les deux ergots de guidage (30) étant parallèles par rapport à l'axe longitudinal XY de la boucle, et le deuxième élément récepteur (12) étant doté d'une plaque d'appui (19) plane, l'ensemble étant apte à assurer un effet d'autocentrage du premier élément à enfichage (11) dans ladite direction longitudinale XY. Magnetic attachment loop comprising: a first plug-in element (11) equipped with a first permanent magnet (17) and a pair of locking arms (15, 16) intended to occupy a locked position when closing the loop, and a position unlocked for opening the loop, a second receiving element (12) having an open space (21) into which the first magnetic attraction plugging element engages, said second receiving element (12) comprising a second permanent magnet (23) such as the juxtaposed poles of the two magnets facing each other have opposite magnetic polarities, characterized in that : the body (13) of the first plug-in element (11) has a pair of guide pins (30) protruding on either side of a first housing opening (18) of the first permanent magnet (17), the two guide lugs (30) being parallel with respect to the longitudinal axis XY of the loop, and the second receiving element (12) being provided with a flat bearing plate (19), the assembly being suitable for ensuring a self-centering effect of the first plug-in element (11) in said longitudinal direction XY. Boucle d'attache selon la revendication 1, caractérisée en ce que les deux aimants permanents (17, 23) sont formés par des plots cylindriques à polarisation axiale, et s'étendant en alignement avec l'axe longitudinal XY.Fastening loop according to claim 1, characterized in that the two permanent magnets (17, 23) are formed by cylindrical pins with axial polarization, and extending in alignment with the longitudinal axis XY. Boucle d'attache selon la revendication 1, caractérisée en ce que le deuxième élément récepteur (12) comprend un chapeau (20) doté d'une paire d'évidements (27) disposés de part et d'autre d'un deuxième orifice (22) de logement du deuxième aimant permanent (23), les évidements (27) étant destinés à recevoir en position de fermeture d'attraction, lesdits ergots de guidage, ainsi que des butées (26) prévues aux extrémités des bras de verrouillage (15, 16).Fastening loop according to claim 1, characterized in that the second receiving element (12) comprises a cap (20) having a pair of recesses (27) arranged on either side of a second orifice ( 22) housing the second permanent magnet (23), the recesses (27) being intended to receive in the closed position of attraction, said lugs as well as stops (26) provided at the ends of the locking arms (15, 16). Boucle d'attache selon la revendication 1, caractérisée en ce que l'entrée de la plaque d'appui (19) comporte une encoche (28) de positionnement dans laquelle s'insère axialement une protubérance (29) de guidage du corps (13) en fin de course d'attraction magnétique.Fastening buckle according to claim 1, characterized in that the inlet of the bearing plate (19) has a notch (28) for positioning in which is axially inserted a protuberance (29) for guiding the body (13). ) at the end of the magnetic attraction race.
EP20120354026 2011-04-06 2012-04-02 Magnetic attachment loop with permanent magnets and mechanical locking Active EP2508095B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1101039A FR2973659B1 (en) 2011-04-06 2011-04-06 MAGNETIC ATTACHING LOOP WITH PERMANENT MAGNETS AND MECHANICAL LOCKING

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EP2508095A1 true EP2508095A1 (en) 2012-10-10
EP2508095B1 EP2508095B1 (en) 2015-05-20

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US (1) US8914951B2 (en)
EP (1) EP2508095B1 (en)
CN (1) CN102726891B (en)
ES (1) ES2543155T3 (en)
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WO2019063948A2 (en) 2017-09-29 2019-04-04 Birota Human-powered vehicle suitable for compact storage
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Also Published As

Publication number Publication date
ES2543155T3 (en) 2015-08-17
CN102726891B (en) 2016-01-20
US8914951B2 (en) 2014-12-23
FR2973659B1 (en) 2014-04-04
EP2508095B1 (en) 2015-05-20
FR2973659A1 (en) 2012-10-12
US20120255144A1 (en) 2012-10-11
CN102726891A (en) 2012-10-17

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