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EP3731686B1 - Device for attaching interchangeable heels for shoes with two springs - Google Patents

Device for attaching interchangeable heels for shoes with two springs Download PDF

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Publication number
EP3731686B1
EP3731686B1 EP18833683.8A EP18833683A EP3731686B1 EP 3731686 B1 EP3731686 B1 EP 3731686B1 EP 18833683 A EP18833683 A EP 18833683A EP 3731686 B1 EP3731686 B1 EP 3731686B1
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EP
European Patent Office
Prior art keywords
spring
housing
locking
heel
mortise
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18833683.8A
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German (de)
French (fr)
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EP3731686A1 (en
Inventor
Margaux Cherif-Cheikh
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Individual
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Individual
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Publication date
Priority claimed from FR1771439A external-priority patent/FR3062036B1/en
Application filed by Individual filed Critical Individual
Publication of EP3731686A1 publication Critical patent/EP3731686A1/en
Application granted granted Critical
Publication of EP3731686B1 publication Critical patent/EP3731686B1/en
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Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B21/00—Heels; Top-pieces or top-lifts
    • A43B21/24—Heels; Top-pieces or top-lifts characterised by the constructive form
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B21/00—Heels; Top-pieces or top-lifts
    • A43B21/36—Heels; Top-pieces or top-lifts characterised by their attachment; Securing devices for the attaching means
    • A43B21/39—Heels; Top-pieces or top-lifts characterised by their attachment; Securing devices for the attaching means by rib groove
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B21/00—Heels; Top-pieces or top-lifts
    • A43B21/24—Heels; Top-pieces or top-lifts characterised by the constructive form
    • A43B21/30—Heels with metal springs
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B21/00—Heels; Top-pieces or top-lifts
    • A43B21/36—Heels; Top-pieces or top-lifts characterised by their attachment; Securing devices for the attaching means
    • A43B21/47—Heels; Top-pieces or top-lifts characterised by their attachment; Securing devices for the attaching means by resilient means
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B21/00—Heels; Top-pieces or top-lifts
    • A43B21/36—Heels; Top-pieces or top-lifts characterised by their attachment; Securing devices for the attaching means
    • A43B21/52—Interchangeable heel parts without special attachments

Definitions

  • the present invention relates to the field of shoes, and more particularly, heeled shoes. It aims to allow the interchangeability of heels in order to be able to easily and quickly vary heels, colors and shapes of heels, according to the user's desire, while keeping the same pair of shoes, thanks to a mechanism attached to the heel. the sole at the back of the shoe and in the heel.
  • the invention relates to a device for fixing removable interchangeable heels for shoes with a simple and economical mechanism under the shoe, at the heel.
  • this new mechanism allows better resistance to an external force and therefore better fixation of the heel on the shoe.
  • a notch 1 in the mortise part simply adapted to the lug of the locking spring and often machined in the same material as the heel, rigid, we have just added a second spring of complementary shape allowing a solid and elastic assembly .
  • This second spring makes it possible to avoid a complete rise of the lug of the flat locking spring, during a significant impact or the application of a continuous external force.
  • the deformation of the second spring in response to a force allows verticalization of its arms and therefore an improvement in the locking of the two springs between them.
  • the first device described in the patent application FR1770083 can be unlocked more easily when applying a force of more than 350 Newton, because the lug against a rigid material can go up because of its slope.
  • the specificity of this new patent is the assembly in double spring which can be deformed and allows the maintenance of the cohesion, during the application of a force of 550 to 720 Newton, according to the slope of the heel, knowing that 500 Newton is the minimum required for attaching heels to basic shoes.
  • US4805320 presents an embodiment with a flat spring, in a projecting part under the shoe, and a notch in the heel.
  • the notch in the heel presents the same problem of slope and rigidity, when applying a large force.
  • the heel is machined in one piece, which is very difficult to do industrially.
  • Our new mechanism has an exterior mortise part which is fixed after production. This mortise part is the same for all the heels, when it is fixed in the heels, and involves a lower production cost since it suffices to produce heels of basic shapes in which the mortise part of the mechanism is fixed.
  • FR1409019 presents, on the one hand, a mechanism with a flexible arm. This mechanism does not allow the automatic locking of the stud in the heel during interlocking, and requires an external tool to unlock the mechanism, which is much less practical than the present invention. On the other hand, this mechanism is not assembled by sliding from rear to front on fins but by a simple interlocking: only the pin blocks the assembly from top to bottom, which is much less solid than 'a transverse tenon-mortise joint which blocks the joint in many more directions.
  • the present invention comprises forms which allow the release by lifting of the tongue and an ease of industrial production due to the assembly of the housing / flat spring and mortise / second flat spring / heel, in addition to a locking strength. thanks to the two springs.
  • FR2907318 presents a device with a flexible part made under the shoe and accessible at the front of the heel.
  • a drawback of this system is that the flexible part allowing the locking and unlocking of the device is produced directly on the base under the boot, by cutting the latter. The need for the pivoting movement when using the mechanism can eventually lead to a break in the fixed part which serves as the axis of rotation.
  • Another drawback is that the user must maintain the accessible part of the flexible blade, when placing the heel on the shoe, in order to raise the pin, which is impractical.
  • the locking pin does not yet allow a real rotation due to its shape and vertical sides.
  • the object of the present invention is to solve the problems mentioned above, that is to say to be simpler, more economical, easily achievable industrially and above all more solid by offering a new removable heel assembly system on the shoe thanks to a locking of two flat springs.
  • the addition of a second flat spring in the notch of the mortise piece considerably improves the strength of the assembly.
  • the present invention consists of the use of an interchangeable heel locking and unlocking system, comprising a tenon base, which will be called a housing in which there is a flat locking spring, also called a clip, as well as a mortise part in which a second flat spring is inserted.
  • the tenon-mortise assembly is locked when the two flat springs, having complementary shapes, come into contact and lock.
  • This elastic system is discreetly and easily accessible by the user, at the level of one of the faces of the case. Accessibility of the system at the front face is privileged in order to guarantee the aesthetics and the practical side of the shoe.
  • the user can act on the tongue of the locking flat spring to rotate it and unlock the heel.
  • the flat spring automatically returns to its initial position thanks to its elasticity, when the user releases it.
  • the mechanism having two springs allows a better fixing of the heel on the shoe because of the adapted shapes of the latter and their elastic properties.
  • the housing with the flat locking spring and the mortise piece with the M-shaped spring can also be placed elsewhere in the mechanism.
  • the mechanism can in fact operate by fixing or machining the case in the heel and by fixing the mortise part to the first assembly of the shoe or by machining it under the sole of the shoe.
  • the case and the mortise piece can be fixed to the elements (shoe assembly insole and heel) by means of suitable fixing means, such as screws, for example.
  • the locking spring can also have a different shape by changing, for example, its V-shaped lug to an inverted M-shaped hollow shape and the M-shaped spring can also, for example, take an inverted V-shape in order to to become the locking pin.
  • the functions of the 2 springs can thus be easily exchanged.
  • the shapes and characteristics of the various elements can also vary while meeting the technical constraints of the invention.
  • An additional advantage of this embodiment is the possibility of changing the first flat spring if it were to be damaged or broken, without the need to change the entire housing, this elastic system being the most important part of the mechanism and being present on the most expensive part of the shoe / heel assembly.
  • FIG. 1 to 3 illustrate an embodiment of the present innovation. Alternative embodiments may take place with regard to the shapes, dimensions, positioning of the elements and certain characteristics and functions of the elements.
  • the shoe is not shown in the various figures.
  • the heel (10) is shown in dotted lines on the figure 1 .
  • the mortise piece (22) is shown complete on the figure 1 and cut on figures 2 and 3 .
  • the means for fixing to the shoes as well as the necessary holes in the housing (1) are not shown in the figures.
  • the box (1) can be fixed, on the one hand, to the shoe assembly insole thanks to fixing means such as screws and the mortise part (22) can be fixed to the heel thanks to fixing means such as screws.
  • the housing must be able to contain the flat spring (6) and be suitable for its size in order to prevent unwanted movements as much as possible.
  • the front opening (3) allows the insertion of the flat spring (6) by compressing it during assembly and the grip of the locking spring during its use.
  • the lower opening (4) allows the locking lug (9) to come out of the housing (1) and the upper opening (21) allows part of the locking spring (7) to be locked therein.
  • the housing may have a hole (5) on its left and right side in order to insert a rigid pin allowing the flat spring (6) to be blocked in addition to the locking elbow.
  • upper (7) which fits into the upper notch (21) of the housing.
  • the flat locking spring (6) was chosen because of its elastic properties and for its ease of production and implementation.
  • it can be machined in a single piece. Its shape may, however, vary in order to best meet the technical constraints of the device.
  • it can be machined, as shown in figure 2 , rounded in shape with an upper locking elbow (7), a bent end for the grip which will be called tongue (8) and a lower V-shaped locking lug (9).
  • the upper locking elbow (7) makes it possible to lock the spring (6) in the upper part (21) of the housing (1) as well as to help in the correct positioning of the spring when it is inserted into the housing.
  • the tongue (8) can come out of the housing (1) through the front opening (3) and can be pushed upwards by the user, which compresses the spring (6), in order to unlock the device.
  • the lower locking pin (9) must protrude from the housing (1) through the lower opening (4), when the spring is in the rest position. It is machined so as to snap into the spring M (24) of the mortise part (22) of the heel (10), which allows the assembly to be locked. It can go up in the housing, during the upward action of the user on the tongue (8), which compresses the spring (6). It is also machined so as to fit fully into the housing when the spring (6) is compressed.
  • the lug (9) can have any shape allowing suitable cohesion and blocking.
  • the resistance of the spring (6) is such that a pressure exerted by the user's finger allows the lug (9) to be raised (lever arm action).
  • the mortise piece (22) fixed to the heel (10) is the removable part of the device. It can have many shapes and heights in order to be best fixed in the heel. It is also machined so as to slide easily around the housing (1): the fins (2) of the housing can slide in the guides of the mortise part (22) and the latter (22) fits without play on the housing (1), thanks to a machining provided for this purpose.
  • the notch (23) of the mortise part (22) of the heel (10) must be machined to receive the spring M (24).
  • the M-shaped spring (24) is a flat spring bent at least three times (25; 26; 26 ') to have a suitable recessed shape (25) to receive the locking pin (9) of the locking spring (6).
  • the folding (26, 26 ') of the spring M must be adapted to the slopes of the locking pin (9) so that the latter locks there without play.
  • the spring M (24) can also be folded two more times to its ends in order to create two locking elbows (27; 27 ') allowing it to be locked in the notch (23) of the mortise part (22) of the heel (10).
  • the lug (9) does not block the sliding of the housing (1) in the mortise part (22) of the heel (10) due to its particular inclination given by an obtuse angle.
  • the lug (9) can then come out thanks to the elastic decompression of the flat spring (6).
  • the lug (9) is then positioned in the spring M (24) of the notch (23) of the mortise part (22), accompanied by a click audible by the user, which then locks the boot assembly / heel (10) or box (1) / mortise piece (22).
  • the tongue (8) of the spring is then positioned downwards, which, in addition to the click, indicates to the user that the lug (9) is properly engaged in the heel. This assembly is solid and without play.
  • the mortise piece (22) of the heel (10) can remain firmly attached to the housing (1) of the shoe thanks to the elastic thrust of the flat spring (6) which pushes and clamps the lug ( 9) in the spring M (24), when it is at rest.
  • the heel (10) can then no longer move in the three directions.
  • the sides of the housing (1) as well as the fins (2) reinforce the assembly, also blocking movement in all directions.
  • the user In order to separate the heel (10) from the shoe and therefore the mortise piece (22) from the housing (1), the user must push the tab (8) of the flat spring (6) upwards, which compresses it and the lug (9) being thus raised, the user can slide the heel (10) backwards to remove it from the body of the shoe.
  • the housing (1) and the mortise piece (22) of the figure 2 are machined from a hard and undeformable material.
  • the flat spring (6) and the M spring (24) of the figure 2 are machined in any metal meeting the constraints techniques. These materials must also be light so as not to make the shoe too heavy.
  • the M spring (24) must be thinner than the locking spring (6) so that it can deform unlike the locking spring (6) which must remain as inert as possible.
  • the locking system can be reversed by modifying the locking spring (6) so that it comprises a hollow part, in the form of an inverted M for example, in place of the lug (9 ) in the form of a V and by modifying the spring M (24) so that it is in the form of an inverted V, for example, and not of an M, in order to serve as a locking lug, in turn.
  • the box (1) could be fixed in the heel (10) and the mortise piece (22) could be fixed under the shoe, by modifying their shape in a suitable manner.
  • the device according to the invention is particularly intended for the simple and inexpensive manufacture of a pair of shoes with interchangeable heels which are easy to use.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Description

La présente invention concerne le domaine des chaussures, et plus particulièrement, des chaussures à talons. Elle vise à permettre l'interchangeabilité des talons afin de pouvoir facilement et rapidement varier de hauteurs, de couleurs et de formes de talons, selon l'envie de l'utilisateur, tout en gardant la même paire de chaussures, grâce un mécanisme fixé sur la semelle à l'arrière de la chaussure et dans le talon.
L'invention concerne un dispositif de fixation de talons interchangeables amovibles pour chaussures avec un mécanisme simple et économique sous la chaussure, au niveau du talon.The present invention relates to the field of shoes, and more particularly, heeled shoes. It aims to allow the interchangeability of heels in order to be able to easily and quickly vary heels, colors and shapes of heels, according to the user's desire, while keeping the same pair of shoes, thanks to a mechanism attached to the heel. the sole at the back of the shoe and in the heel.
The invention relates to a device for fixing removable interchangeable heels for shoes with a simple and economical mechanism under the shoe, at the heel.

Il est connu de nombreux systèmes de talons interchangeables. Cependant, ces mécanismes sont le plus souvent complexes, onéreux, peu pratiques et semblent parfois peu solides.Many systems of interchangeable heels are known. However, these mechanisms are most often complex, expensive, impractical and sometimes seem unsound.

Ce dispositif est une amélioration de la demande de brevet FR1770083 déjà déposée par nos soins.This device is an improvement of the patent application FR1770083 already filed by us.

En effet, ce nouveau mécanisme permet une meilleure résistance à une force extérieure et donc une meilleure fixation du talon sur la chaussure. A la place d'une encoche 1 dans la partie mortaise simplement adaptée à l'ergot du ressort de verrouillage et souvent usinée dans le même matériau que le talon, rigide, nous venons ajouter un second ressort de forme complémentaire permettant un assemblage solide et élastique. Ce deuxième ressort permet d'éviter une remontée complète de l'ergot du ressort plat de verrouillage, lors d'un choc important ou de l'application d'une force extérieure continue. La déformation du deuxième ressort en réponse à une force permet une verticalisation de ses bras et donc une amélioration du verrouillage des deux ressorts entre eux. Le premier dispositif décrit dans la demande de brevet FR1770083 peut se déverrouiller plus facilement lorsque l'on applique une force de plus de 350 Newton, car l'ergot contre un matériau rigide peut remonter du fait de sa pente. La spécificité de ce nouveau brevet est l'assemblage en double ressort qui peut se déformer et permet le maintien de la cohésion, lors de l'application d'une force de 550 à 720 Newton, selon la pente du talon, sachant que 500 Newton est le minimum requis pour la fixation de talons sur les chaussures basiques.Indeed, this new mechanism allows better resistance to an external force and therefore better fixation of the heel on the shoe. Instead of a notch 1 in the mortise part simply adapted to the lug of the locking spring and often machined in the same material as the heel, rigid, we have just added a second spring of complementary shape allowing a solid and elastic assembly . This second spring makes it possible to avoid a complete rise of the lug of the flat locking spring, during a significant impact or the application of a continuous external force. The deformation of the second spring in response to a force allows verticalization of its arms and therefore an improvement in the locking of the two springs between them. The first device described in the patent application FR1770083 can be unlocked more easily when applying a force of more than 350 Newton, because the lug against a rigid material can go up because of its slope. The specificity of this new patent is the assembly in double spring which can be deformed and allows the maintenance of the cohesion, during the application of a force of 550 to 720 Newton, according to the slope of the heel, knowing that 500 Newton is the minimum required for attaching heels to basic shoes.

US4805320 présente un mode de réalisation avec un ressort plat, dans une partie saillante sous la chaussure, et une encoche dans le talon. Outre le manque d'information au sujet de la forme du ressort plat et de sa fixation sous la chaussure, l'encoche dans le talon présente le même problème de pente et rigidité, lors de l'application d'une force importante. De plus, le talon est usiné en une seule pièce, ce qui est très difficile à faire industriellement. Notre nouveau mécanisme présente une partie mortaise extérieure et fixée après production. Cette partie mortaise est la même pour tous les talons, lorsqu'elle est fixée dans les talons, et implique un coût de production plus bas puisqu'il suffit de produire des talons de formes basiques dans lesquels on vient fixer la pièce mortaise du mécanisme. US4805320 presents an embodiment with a flat spring, in a projecting part under the shoe, and a notch in the heel. Besides the lack of information about the shape of the flat spring and its fixation under the shoe, the notch in the heel presents the same problem of slope and rigidity, when applying a large force. In addition, the heel is machined in one piece, which is very difficult to do industrially. Our new mechanism has an exterior mortise part which is fixed after production. This mortise part is the same for all the heels, when it is fixed in the heels, and involves a lower production cost since it suffices to produce heels of basic shapes in which the mortise part of the mechanism is fixed.

FR1409019 présente, d'une part, un mécanisme avec un bras flexible. Ce mécanisme ne permet pas le blocage automatique du téton dans le talon lors de l'emboitement, et nécessite un outil extérieur pour déverrouiller le mécanisme, ce qui est beaucoup moins pratique que la présente invention. D'autre part, ce mécanisme ne s'assemble pas par coulissement d'arrière vers l'avant sur des ailettes mais par un emboitement simple : seul le téton bloque l'assemblage d'haut en bas, ce qui est beaucoup moins solide qu'un assemblage tenon-mortaise transversal qui bloque l'assemblage dans beaucoup plus de directions. FR1409019 presents, on the one hand, a mechanism with a flexible arm. This mechanism does not allow the automatic locking of the stud in the heel during interlocking, and requires an external tool to unlock the mechanism, which is much less practical than the present invention. On the other hand, this mechanism is not assembled by sliding from rear to front on fins but by a simple interlocking: only the pin blocks the assembly from top to bottom, which is much less solid than 'a transverse tenon-mortise joint which blocks the joint in many more directions.

FR1409019 présente, d'autre part, une languette montée sur un tenon, avec une sollicitation élastique. Outre le manque d'information concernant le procédé élastique et le mode de fabrication, le mécanisme ne permet encore pas le blocage automatique du téton dans le talon. De plus, le téton de blocage semble beaucoup trop petit pour bien verrouiller l'assemblage et du fait de la rotation de la languette lorsqu'on la soulève, celui-ci pourrait encore moins se débloquer s'il avait une dimension plus importante. Avantageusement, la présente invention comprend des formes qui permettent le déblocage par soulèvement de la languette et une facilitation de réalisation industrielle dû à l'assemblage boitier/ressort plat et pièce mortaise/second ressort plat/talon, en plus d'une solidité de verrouillage grâce aux deux ressorts. FR1409019 has, on the other hand, a tongue mounted on a tenon, with an elastic bias. Besides the lack of information concerning the elastic process and the manufacturing method, the mechanism does not yet allow the automatic locking of the nipple in the heel. In addition, the locking pin seems much too small to properly lock the assembly and due to the rotation of the tab when lifting it, it could even less unlock if it had a larger dimension. Advantageously, the present invention comprises forms which allow the release by lifting of the tongue and an ease of industrial production due to the assembly of the housing / flat spring and mortise / second flat spring / heel, in addition to a locking strength. thanks to the two springs.

FR2907318 , présente un dispositif avec une partie flexible réalisé sous la chaussure et accessible à l'avant du talon. Cependant, un inconvénient de ce système est que la partie flexible permettant le verrouillage et le déverrouillage du dispositif est réalisée directement sur l'embase sous la chaussure, par découpe de celle-ci. La nécessité du mouvement pivotant lors de l'utilisation du mécanisme peut entraîner, à terme, une rupture au niveau de la partie fixe qui sert d'axe de rotation. Un autre inconvénient est que l'utilisateur doit maintenir la partie accessible de la lame flexible, lors de la mise en place du talon sur la chaussure, pour remonter le picot, ce qui est peu pratique. Enfin, le picot de verrouillage ne permet encore pas une vraie rotation du fait de sa forme et côtés verticaux. FR2907318 , presents a device with a flexible part made under the shoe and accessible at the front of the heel. However, a drawback of this system is that the flexible part allowing the locking and unlocking of the device is produced directly on the base under the boot, by cutting the latter. The need for the pivoting movement when using the mechanism can eventually lead to a break in the fixed part which serves as the axis of rotation. Another drawback is that the user must maintain the accessible part of the flexible blade, when placing the heel on the shoe, in order to raise the pin, which is impractical. Finally, the locking pin does not yet allow a real rotation due to its shape and vertical sides.

La présente invention a pour objectif de résoudre les problèmes évoqués ci-dessus, c'est à dire être plus simple, plus économique, facilement réalisable industriellement et surtout plus solide en proposant un nouveau système d'assemblage de talon amovible sur la chaussure grâce à un verrouillage de deux ressorts plats. L'ajout d'un deuxième ressort plat dans l'encoche de la pièce mortaise permet d'améliorer considérablement la solidité de l'assemblage.The object of the present invention is to solve the problems mentioned above, that is to say to be simpler, more economical, easily achievable industrially and above all more solid by offering a new removable heel assembly system on the shoe thanks to a locking of two flat springs. The addition of a second flat spring in the notch of the mortise piece considerably improves the strength of the assembly.

La présente invention consiste en l'utilisation d'un système de verrouillage et déverrouillage de talon interchangeable, comportant une embase à tenon, que l'on appellera boîtier dans lequel se trouve un ressort plat de verrouillage, aussi appelé clip, ainsi qu'une partie mortaise dans le lequel un second ressort plat est inséré.The present invention consists of the use of an interchangeable heel locking and unlocking system, comprising a tenon base, which will be called a housing in which there is a flat locking spring, also called a clip, as well as a mortise part in which a second flat spring is inserted.

L'assemblage tenon-mortaise est verrouillé quand les deux ressorts plats, ayant des formes complémentaires, entrent en contact et se bloquent.
Ce système élastique est discrètement et facilement accessible par l'utilisateur, au niveau de l'une des faces du boîtier. L'accessibilité du système au niveau de la face antérieure est privilégiée afin de garantir l'esthétique et le côté pratique de la chaussure. L'utilisateur peut agir sur la languette du ressort plat de verrouillage pour le faire pivoter et déverrouiller le talon. Le ressort plat reprend automatiquement sa position initiale grâce à son élasticité, quand l'utilisateur le relâche. Le mécanisme présentant deux ressorts permet une meilleure fixation du talon sur la chaussure du fait des formes adaptées de ceux-ci et de leurs propriétés élastiques.The tenon-mortise assembly is locked when the two flat springs, having complementary shapes, come into contact and lock.
This elastic system is discreetly and easily accessible by the user, at the level of one of the faces of the case. Accessibility of the system at the front face is privileged in order to guarantee the aesthetics and the practical side of the shoe. The user can act on the tongue of the locking flat spring to rotate it and unlock the heel. The flat spring automatically returns to its initial position thanks to its elasticity, when the user releases it. The mechanism having two springs allows a better fixing of the heel on the shoe because of the adapted shapes of the latter and their elastic properties.

Selon un mode particulier de réalisation :

  • Le boîtier, dans un matériau rigide et solide, peut être soit directement usiné sous la semelle de la chaussure ou bien fixé à la première de montage grâce à des moyens de fixations adaptés, tels que des boulons ou des vis, par exemple, ce qui est privilégié d'un point de vue économique.
    Il peut être usiné de façon à permettre le coulissement précis de la pièce mortaise, d'arrière vers l'avant, le long d'un chemin de guidage, tel que des ailettes et à permettre un assemblage type tenon-mortaise avec la pièce mortaise, ayant un rôle de tenon. Le mouvement d'emboitement de la pièce mortaise sur le boitier est un mouvement transversal d'arrière vers l'avant.
    Il peut être usiné de façon à contenir le ressort plat de verrouillage.
    Ce boîtier peut présenter trois ouvertures : une ouverture antérieure par laquelle on insère le ressort de verrouillage et par laquelle on y accède, une ouverture inférieure par laquelle sort l'ergot de blocage du ressort de verrouillage et une encoche supérieure dans laquelle un coude de blocage du ressort de verrouillage est bloqué. Ces ouvertures peuvent être usinées sur d'autres faces du boitier si le ressort plat de verrouillage est positionné différemment ou de forme différente.
  • Le ressort plat de verrouillage peut être formé d'un ergot de verrouillage, d'un coude de blocage supérieur pour être coincé dans l'encoche supérieure du boitier et d'une languette pliée permettant sa prise en main, à l'extérieur du mécanisme.
    Avantageusement, le ressort plat de verrouillage est bloqué dans le boîtier grâce à un axe fixé transversalement et grâce à un coude de blocage, au niveau de sa partie supérieure, ce qui permet son positionnement exact dans le boîtier.
    Le ressort plat peut être prolongé d'une languette légèrement pliée le faisant sortir vers l'une des faces du boîtier, favorablement vers l'avant, afin de permettre à l'utilisateur d'y accéder.
    Un ergot de forme angulaire, telle qu'en forme de V, est formé grâce à un pliage spécial du ressort plat et est destiné à verrouiller le système par engagement dans un second ressort plat de forme complémentaire, fixé dans la pièce mortaise du talon. Cet ergot peut dépasser sous le boîtier sous l'action de la poussée élastique du ressort en position de repos et peut remonter par action du doigt de l'utilisateur lorsqu'il agit sur la languette à l'extérieur du boîtier.
    La résistance du ressort plat doit être inférieure à la force appliquée par le doigt de l'utilisateur sur la languette afin de permettre le mouvement. Avantageusement, l'ergot ne bloque pas le coulissement du boitier dans la pièce mortaise grâce à son inclinaison particulière donnée par un angle obtus et obtenue par pliage. Cela permet d'éviter le blocage du mouvement lors de la mise en place de la pièce mortaise sur le boîtier.
  • La pièce mortaise, aussi appelée partie femelle, est adaptée de façon à s'emboiter sur le boitier et à contenir une encoche.
    Elle peut être usinée de manière à coulisser d'arrière vers l'avant sur le boîtier grâce à des glissières et à s'y emboîter sans jeu, de façon solide et stable, grâce à un usinage adapté.
    Elle peut être fixée au talon grâce à des moyens de fixations adaptés, tels que des vis par exemple, ce qui lui permet d'être identique pour tous les talons usinés ou bien elle peut être usinée directement dans le talon.
    Le verrouillage en position finale est assuré par la présence d'une encoche adaptée recevant l'ergot dépassant sous le boîtier. L'encoche adaptée est réalisée grâce à un deuxième ressort plat plié et inséré dans l'encoche de la pièce mortaise.
    Le déverrouillage de la pièce mortaise est réalisé en agissant sur l'extrémité du ressort de verrouillage, accessible au niveau de l'une des faces du boîtier, permettant son retrait vers l'arrière.
  • Le second ressort plat est plié au minimum trois fois pour avoir une forme adaptée en creux, telle qu'en forme de M par exemple, et pour être adapté de façon complémentaire à la forme du ressort plat de verrouillage, afin de recevoir l'ergot de ce dernier. Il peut être plié deux fois supplémentaires à ses extrémités afin de créer deux coudes de blocage lui permettant son positionnement exact et d'être bloqué dans l'encoche de la pièce mortaise. Sa poussée élastique et la fixation de la pièce mortaise sur le talon lui permettent le blocage en position finale.
According to a particular embodiment:
  • The case, in a rigid and solid material, can be either directly machined under the sole of the shoe or fixed to the insole by means of suitable fasteners, such as bolts or screws, for example, which is preferred from an economic point of view.
    It can be machined to allow precise sliding of the mortise piece, from back to front, along a guide path, such as fins and to allow a tenon-mortise type assembly with the mortise piece. , having a tenon role. The interlocking movement of the mortise piece on the case is a transverse movement from back to front.
    It can be machined to contain the locking flat spring.
    This housing can have three openings: a front opening through which the locking spring is inserted and accessed, a lower opening through which the locking pin of the locking spring exits and an upper notch in which a locking elbow of the locking spring is blocked. These openings can be machined on other faces of the case if the flat locking spring is positioned differently or of a different shape.
  • The flat locking spring can be formed of a locking lug, an upper locking elbow to be wedged in the upper notch of the case and a bent tab allowing it to be held in the hand, outside the mechanism .
    Advantageously, the flat locking spring is locked in the housing by virtue of an axis fixed transversely and by virtue of a locking elbow, at the level of its upper part, which allows its exact positioning in the housing.
    The flat spring can be extended by a slightly bent tab causing it to come out towards one of the faces of the housing, favorably towards the front, in order to allow the user to access it.
    An angularly shaped lug, such as a V-shaped, is formed by a special folding of the flat spring and is intended to lock the system by engagement in a second flat spring of complementary shape, fixed in the mortise piece of the heel. This lug can protrude under the housing under the action of the elastic thrust of the spring in the rest position and can go up by action of the user's finger when acting on the tongue outside the housing.
    The resistance of the flat spring must be less than the force applied by the user's finger on the tongue in order to allow movement. Advantageously, the lug does not block the sliding of the case in the mortise part thanks to its particular inclination given by an obtuse angle and obtained by folding. This makes it possible to avoid blocking the movement when the mortise piece is placed on the case.
  • The mortise piece, also called the female part, is adapted so as to fit on the case and to contain a notch.
    It can be machined in such a way that it slides from back to front on the housing thanks to the guides and fits into it without play, in a solid and stable manner, thanks to suitable machining.
    It can be fixed to the heel by means of suitable fixing means, such as screws for example, which allows it to be identical for all machined heels or it can be machined directly in the heel.
    Locking in the final position is ensured by the presence of a suitable notch receiving the lug protruding under the housing. The adapted notch is made using a second flat spring folded and inserted into the notch of the mortise piece.
    The mortise part is unlocked by acting on the end of the locking spring, accessible from one of the faces of the housing, allowing it to be withdrawn towards the rear.
  • The second flat spring is bent at least three times to have a suitable hollow shape, such as an M-shaped for example, and to be adapted in a complementary manner to the shape of the flat locking spring, in order to receive the lug of the last. It can be bent two more times at its ends to create two locking elbows allowing it to be exactly positioned and to be locked in the notch of the mortise piece. Its elastic thrust and the fixing of the mortise piece on the heel allow it to be blocked in the final position.

Selon une variante de l'invention, le boîtier avec le ressort plat de verrouillage et la pièce mortaise avec le ressort en forme de M peuvent aussi être placés ailleurs dans le mécanisme.
Le mécanisme peut en effet fonctionner en fixant ou usinant le boitier dans le talon et en fixant la pièce mortaise à la première de montage de la chaussure ou bien en l'usinant sous la semelle de la chaussure.
Dans tous les modes de réalisation, le boitier et la pièce mortaise peuvent être fixés aux éléments (première de montage de la chaussure et talon) grâce à des moyens de fixations adaptés, tels que des vis, par exemple.According to a variant of the invention, the housing with the flat locking spring and the mortise piece with the M-shaped spring can also be placed elsewhere in the mechanism.
The mechanism can in fact operate by fixing or machining the case in the heel and by fixing the mortise part to the first assembly of the shoe or by machining it under the sole of the shoe.
In all the embodiments, the case and the mortise piece can be fixed to the elements (shoe assembly insole and heel) by means of suitable fixing means, such as screws, for example.

Le ressort de verrouillage peut aussi avoir une forme différente en modifiant, par exemple, son ergot en forme de V en une forme creuse en forme de M inversé et le ressort de forme M peut aussi, par exemple, prendre une forme en V inversé afin de devenir l'ergot de blocage. Les fonctions des 2 ressorts peuvent être ainsi échangés facilement.
Les formes et caractéristiques des différents éléments peuvent aussi varier tout en répondant aux contraintes techniques de l'invention.The locking spring can also have a different shape by changing, for example, its V-shaped lug to an inverted M-shaped hollow shape and the M-shaped spring can also, for example, take an inverted V-shape in order to to become the locking pin. The functions of the 2 springs can thus be easily exchanged.
The shapes and characteristics of the various elements can also vary while meeting the technical constraints of the invention.

Un avantage supplémentaire de cette réalisation est la possibilité de changer le premier ressort plat s'il venait à s'abîmer ou à se casser, sans la nécessité de changer le boîtier entier, ce système élastique étant la partie la plus importante du mécanisme et étant présente sur la partie la plus coûteuse de l'assemblage chaussure/talon.An additional advantage of this embodiment is the possibility of changing the first flat spring if it were to be damaged or broken, without the need to change the entire housing, this elastic system being the most important part of the mechanism and being present on the most expensive part of the shoe / heel assembly.

La présente invention sera mieux comprise en étudiant un mode de réalisation particulier pris à titre d'exemple, nullement limitatif et illustré par les dessins annexés, sur lesquels :

  • La figure 1 est une vue en perspective d'un mode de réalisation présentant l'assemblage boitier, pièce mortaise et talon (en pointillé).
  • La figure 2 est une coupe de l'assemblage tenon-mortaise verrouillé, avec la pièce mortaise coupée.
  • La figure 3 est une vue en coupe de l'assemblage verrouillé lorsque celui-ci subit une force antérieure.
The present invention will be better understood by studying a particular embodiment taken by way of example, in no way limiting and illustrated by the appended drawings, in which:
  • The figure 1 is a perspective view of an embodiment showing the housing, mortise part and heel assembly (in dotted lines).
  • The figure 2 is a section of the locked tenon-mortise assembly, with the mortise piece cut.
  • The figure 3 is a sectional view of the locked assembly when it experiences an anterior force.

Les figures 1 à 3 illustrent un mode de réalisation de la présente innovation. Des variantes de réalisation peuvent avoir lieu en ce qui concerne les formes, les dimensions, le positionnement des éléments et certaines caractéristiques et fonctions des éléments.The figures 1 to 3 illustrate an embodiment of the present innovation. Alternative embodiments may take place with regard to the shapes, dimensions, positioning of the elements and certain characteristics and functions of the elements.

La chaussure n'est pas représentée sur les différentes figures. Le talon (10) est représenté en pointillé sur la figure 1. La pièce mortaise (22) est représentée entière sur la figure 1 et coupée sur les figures 2 et 3.
Les moyens de fixation sur les chaussures ainsi que les perçages nécessaires du boîtier (1) ne sont pas représentés sur les figures.
Le boitier (1) peut être fixé, d'une part, à la première de montage de la chaussure grâce à des moyens de fixations tels que des vis et la partie mortaise (22) peut être fixé au talon grâce à des moyens de fixations tels que des vis.The shoe is not shown in the various figures. The heel (10) is shown in dotted lines on the figure 1 . The mortise piece (22) is shown complete on the figure 1 and cut on figures 2 and 3 .
The means for fixing to the shoes as well as the necessary holes in the housing (1) are not shown in the figures.
The box (1) can be fixed, on the one hand, to the shoe assembly insole thanks to fixing means such as screws and the mortise part (22) can be fixed to the heel thanks to fixing means such as screws.

Le boîtier doit pouvoir contenir le ressort plat (6) et être adapté à sa dimension afin d'empêcher au maximum les mouvements non voulus.
L'ouverture antérieure (3) permet l'insertion du ressort plat (6) en le comprimant lors du montage et la prise en main du ressort de verrouillage lors de son utilisation. L'ouverture inférieure (4) permet à l'ergot de verrouillage (9) de sortir du boitier (1) et l'ouverture supérieure (21) permet d'y bloquer une partie du ressort de verrouillage (7) .
Le boîtier peut comporter un perçage (5) sur son côté gauche et son côté droit afin d'y insérer un axe rigide permettant de bloquer le ressort plat (6) en plus du coude de blocage supérieur (7), venant s'insérer dans l'encoche supérieure (21) du boitier.The housing must be able to contain the flat spring (6) and be suitable for its size in order to prevent unwanted movements as much as possible.
The front opening (3) allows the insertion of the flat spring (6) by compressing it during assembly and the grip of the locking spring during its use. The lower opening (4) allows the locking lug (9) to come out of the housing (1) and the upper opening (21) allows part of the locking spring (7) to be locked therein.
The housing may have a hole (5) on its left and right side in order to insert a rigid pin allowing the flat spring (6) to be blocked in addition to the locking elbow. upper (7), which fits into the upper notch (21) of the housing.

Le ressort plat de verrouillage (6) a été choisi du fait de ses propriétés élastiques et pour sa facilité de production et de mise en œuvre. Avantageusement, il peut être usiné en une seule pièce. Sa forme peut, néanmoins, varier afin de répondre au mieux aux contraintes techniques du dispositif.
A titre d'exemple non limitatif, il peut être usiné, comme la montre la figure 2, de forme arrondie avec un coude supérieur de blocage (7), une extrémité pliée pour la prise en main que l'on appellera languette (8) et un ergot inférieur de blocage en forme de V (9).
Le coude supérieur de blocage (7) permet de bloquer le ressort (6) dans la partie supérieure (21) du boîtier (1) ainsi que d'aider au bon positionnement du ressort lors de son insertion dans le boîtier.
La languette (8) peut sortir du boîtier (1) par l'ouverture antérieure (3) et peut être poussée vers le haut par l'utilisateur, ce qui comprime le ressort (6), afin de déverrouiller le dispositif.
L'ergot inférieur de blocage (9) doit dépasser du boîtier (1) par l'ouverture inférieure (4), lorsque le ressort est en position de repos. Il est usiné de sorte à s'encliqueter dans le ressort M (24) de la pièce mortaise (22) du talon (10), ce qui permet de verrouiller l'assemblage. Il peut remonter dans le boîtier, lors de l'action vers le haut de l'utilisateur sur la languette (8), qui comprime le ressort (6). Il est aussi usiné de sorte à rentrer entièrement dans le boîtier lorsque le ressort (6) est comprimé.
L'ergot (9) peut avoir toutes les formes permettant une cohésion et un blocage adaptés.The flat locking spring (6) was chosen because of its elastic properties and for its ease of production and implementation. Advantageously, it can be machined in a single piece. Its shape may, however, vary in order to best meet the technical constraints of the device.
By way of non-limiting example, it can be machined, as shown in figure 2 , rounded in shape with an upper locking elbow (7), a bent end for the grip which will be called tongue (8) and a lower V-shaped locking lug (9).
The upper locking elbow (7) makes it possible to lock the spring (6) in the upper part (21) of the housing (1) as well as to help in the correct positioning of the spring when it is inserted into the housing.
The tongue (8) can come out of the housing (1) through the front opening (3) and can be pushed upwards by the user, which compresses the spring (6), in order to unlock the device.
The lower locking pin (9) must protrude from the housing (1) through the lower opening (4), when the spring is in the rest position. It is machined so as to snap into the spring M (24) of the mortise part (22) of the heel (10), which allows the assembly to be locked. It can go up in the housing, during the upward action of the user on the tongue (8), which compresses the spring (6). It is also machined so as to fit fully into the housing when the spring (6) is compressed.
The lug (9) can have any shape allowing suitable cohesion and blocking.

La résistance du ressort (6) est telle qu'une pression exercée par le doigt de l'utilisateur permette de remonter l'ergot (9) (action de bras de levier).The resistance of the spring (6) is such that a pressure exerted by the user's finger allows the lug (9) to be raised (lever arm action).

La pièce mortaise (22) fixée sur le talon (10) est la partie amovible du dispositif. Elle peut avoir de nombreuses formes et hauteurs afin d'être au mieux fixée dans le talon. Elle est aussi usinée de façon à coulisser facilement autour du boîtier (1) : les ailettes (2) du boîtier peuvent glisser dans des glissières de la pièce mortaise (22) et celle-ci (22) vient s'emboîter sans jeu sur le boîtier (1), grâce à un usinage prévu à cet effet.
L'encoche (23) de la pièce mortaise (22) du talon (10) doit être usinée pour recevoir le ressort M (24).The mortise piece (22) fixed to the heel (10) is the removable part of the device. It can have many shapes and heights in order to be best fixed in the heel. It is also machined so as to slide easily around the housing (1): the fins (2) of the housing can slide in the guides of the mortise part (22) and the latter (22) fits without play on the housing (1), thanks to a machining provided for this purpose.
The notch (23) of the mortise part (22) of the heel (10) must be machined to receive the spring M (24).

Le ressort en forme de M (24) est un ressort plat plié au minimum trois fois (25 ; 26 ; 26') pour avoir une forme adaptée en creux (25) pour recevoir l'ergot de blocage (9) du ressort de verrouillage (6). Le pliage (26, 26') du ressort M doit être adapté aux pentes de l'ergot de blocage (9) afin que ce dernier s'y bloque sans jeu. Le ressort M (24) peut aussi être plié deux fois supplémentaires à ses extrémités afin de créer deux coudes de blocage (27 ; 27') lui permettant d'être bloqué dans l'encoche (23) de la pièce mortaise (22) du talon (10).The M-shaped spring (24) is a flat spring bent at least three times (25; 26; 26 ') to have a suitable recessed shape (25) to receive the locking pin (9) of the locking spring (6). The folding (26, 26 ') of the spring M must be adapted to the slopes of the locking pin (9) so that the latter locks there without play. The spring M (24) can also be folded two more times to its ends in order to create two locking elbows (27; 27 ') allowing it to be locked in the notch (23) of the mortise part (22) of the heel (10).

Nous allons décrire le fonctionnement du dispositif lors de la mise en place du talon, lors de l'application d'une force extérieure importante puis du changement de talon.We will describe the operation of the device when the heel is put in place, when a significant external force is applied and then when the heel is changed.

Lors du coulissement de la pièce mortaise (22), et donc du talon (10), vers l'avant sur le boîtier (1), l'ergot (9) remonte, sans effort, dans le boîtier (1) par compression du ressort plat (6).When the mortise piece (22), and therefore the heel (10), slides forward on the housing (1), the lug (9) rises effortlessly in the housing (1) by compressing the flat spring (6).

L'ergot (9) ne bloque pas le coulissement du boitier (1) dans la pièce mortaise (22) du talon (10) du fait de son inclinaison particulière donnée par un angle obtus.
L'ergot (9), ainsi rentré dans le boîtier, ne bloque plus le coulissement de la pièce mortaise (22) et donc du talon (10) qui peut alors continuer son chemin jusqu'à s'emboîter complètement sur le boîtier (1).The lug (9) does not block the sliding of the housing (1) in the mortise part (22) of the heel (10) due to its particular inclination given by an obtuse angle.
The lug (9), thus inserted into the housing, no longer blocks the sliding of the mortise part (22) and therefore of the heel (10) which can then continue its way until it engages completely on the housing (1 ).

Lorsque l'ouverture inférieure (4) du boîtier (1) arrive en face de l'encoche (23) de la pièce mortaise (22) du talon (10), par poursuite du mouvement, l'ergot (9) peut alors ressortir grâce à la décompression élastique du ressort plat (6). L'ergot (9) se positionne alors dans le ressort M (24) de l'encoche (23) de la pièce mortaise (22), accompagné d'un clic audible par l'utilisateur, ce qui verrouille alors l'assemblage chaussure/talon (10) ou boitier (1)/pièce mortaise (22).
La languette (8) du ressort est alors positionnée vers le bas, ce qui, en plus du clic, indique à l'utilisateur que l'ergot (9) est bien enclenché dans le talon.
Cet assemblage est solide et sans jeu. La pièce mortaise (22) du talon (10) peut rester fixée solidement au boîtier (1) de la chaussure grâce à la poussée élastique du ressort plat (6) qui pousse et coince l'ergot (9) dans le ressort M (24), lorsqu'il est au repos.
Le talon (10) ne peut alors plus bouger dans les trois directions. Les côtés du boîtier (1) ainsi que les ailettes (2) renforcent l'assemblage, bloquant aussi le mouvement dans toutes les directions.When the lower opening (4) of the housing (1) comes in front of the notch (23) of the mortise part (22) of the heel (10), by continuing the movement, the lug (9) can then come out thanks to the elastic decompression of the flat spring (6). The lug (9) is then positioned in the spring M (24) of the notch (23) of the mortise part (22), accompanied by a click audible by the user, which then locks the boot assembly / heel (10) or box (1) / mortise piece (22).
The tongue (8) of the spring is then positioned downwards, which, in addition to the click, indicates to the user that the lug (9) is properly engaged in the heel.
This assembly is solid and without play. The mortise piece (22) of the heel (10) can remain firmly attached to the housing (1) of the shoe thanks to the elastic thrust of the flat spring (6) which pushes and clamps the lug ( 9) in the spring M (24), when it is at rest.
The heel (10) can then no longer move in the three directions. The sides of the housing (1) as well as the fins (2) reinforce the assembly, also blocking movement in all directions.

Lorsque le talon subit une force extérieure importante, représentée par la flèche sur la figure 3, dû, par exemple, à un à-coup contre une marche d'escalier ou un à-coup de course, cette force se répercutera sur la pièce mortaise (22), le ressort M (24) et sur l'ergot de blocage (9). L'action élastique antagoniste des deux ressorts viendra ajouter la solidité nécessaire afin d'éviter la désolidarisation du montage.
En effet, par exemple, comme le montre la figure 3, si une force antérieure extérieure venait s'appliquer, sur le talon (10) et donc sur la pièce mortaise (22), l'ergot de blocage (9) pourrait être poussé vers l'arrière, remonter et impliquer le déverrouillage du système.
Néanmoins, grâce à son élasticité, le ressort M (24) pourrait se déformer et comprimer l'angle alpha. Cette légère compression impliquerait un mouvement de la pente antérieure du ressort M (24) qui deviendrait alors plus verticale. Cette verticalité bloquerait alors la poussée de l'ergot de verrouillage (9) qui ne pourrait plus remonter. Une force de réaction plus importante augmenterait ainsi encore plus le blocage de l'ergot (9) sur le ressort M (24). L'ajout d'un deuxième ressort au montage implique donc une amélioration du verrouillage lors de l'utilisation quotidienne du dispositif.When the heel is subjected to a significant external force, represented by the arrow on the figure 3 , due, for example, to a jerk against a staircase or a jerk of stroke, this force will be reflected on the mortise part (22), the spring M (24) and on the locking pin (9). The opposing elastic action of the two springs will add the necessary strength in order to avoid the separation of the assembly.
Indeed, for example, as shown in figure 3 , if an external anterior force were to be applied, on the heel (10) and therefore on the mortise part (22), the locking lug (9) could be pushed backwards, go up and involve the unlocking of the system .
Nevertheless, thanks to its elasticity, the spring M (24) could deform and compress the angle alpha. This slight compression would involve a movement of the anterior slope of the spring M (24) which would then become more vertical. This verticality would then block the thrust of the locking lug (9) which could no longer go up. A greater reaction force would thus further increase the locking of the lug (9) on the spring M (24). The addition of a second spring to the assembly therefore implies an improvement in the locking during daily use of the device.

Afin de désolidariser le talon (10) de la chaussure et donc la pièce mortaise (22) du boîtier (1), l'utilisateur doit pousser la languette (8) du ressort plat (6) vers le haut, ce qui le comprime et l'ergot (9) étant ainsi relevé, l'utilisateur peut faire glisser le talon (10) vers l'arrière pour le retirer du corps de la chaussure.In order to separate the heel (10) from the shoe and therefore the mortise piece (22) from the housing (1), the user must push the tab (8) of the flat spring (6) upwards, which compresses it and the lug (9) being thus raised, the user can slide the heel (10) backwards to remove it from the body of the shoe.

Le boîtier (1) et la pièce mortaise (22) de la figure 2 sont usinés dans un matériau dur et indéformable. Le ressort plat (6) et le ressort M (24) de la figure 2 sont usinés dans n'importe quel métal répondant aux contraintes techniques. Ces matériaux doivent aussi être légers afin de ne pas rendre la chaussure trop lourde.The housing (1) and the mortise piece (22) of the figure 2 are machined from a hard and undeformable material. The flat spring (6) and the M spring (24) of the figure 2 are machined in any metal meeting the constraints techniques. These materials must also be light so as not to make the shoe too heavy.

Le ressort M (24) doit être plus fin que le ressort de verrouillage (6) afin qu'il puisse se déformer à la différence du ressort de verrouillage (6) qui doit rester le plus inerte possible.The M spring (24) must be thinner than the locking spring (6) so that it can deform unlike the locking spring (6) which must remain as inert as possible.

Selon un autre mode de réalisation, le système de verrouillage peut être inversé par une modification du ressort de verrouillage (6) afin qu'il comprenne une partie creuse, en forme de M inversé par exemple, à la place de l'ergot (9) en forme de V et par une modification du ressort M (24) afin que celui-ci soit en forme de V inversé, par exemple, et non de M, afin de servir d'ergot de blocage, à son tour.According to another embodiment, the locking system can be reversed by modifying the locking spring (6) so that it comprises a hollow part, in the form of an inverted M for example, in place of the lug (9 ) in the form of a V and by modifying the spring M (24) so that it is in the form of an inverted V, for example, and not of an M, in order to serve as a locking lug, in turn.

Selon encore un autre mode de réalisation, le boitier (1) pourrait être fixé dans le talon (10) et la pièce mortaise (22) pourrait être fixée sous la chaussure, en modifiant leur forme de façon adaptée.According to yet another embodiment, the box (1) could be fixed in the heel (10) and the mortise piece (22) could be fixed under the shoe, by modifying their shape in a suitable manner.

La réalisation de l'invention est donc possible de différentes manières. Nous avons choisi d'exposer, en guise d'exemple, la réalisation la plus simple et la plus avantageuse.The realization of the invention is therefore possible in different ways. We have chosen to show, by way of example, the simplest and most advantageous realization.

Le dispositif selon l'invention est particulièrement destiné à la fabrication simple et peu coûteuse d'une paire de chaussures à talons interchangeables d'utilisation facile.The device according to the invention is particularly intended for the simple and inexpensive manufacture of a pair of shoes with interchangeable heels which are easy to use.

Claims (10)

  1. Device for attaching removable interchangeable heels for shoes comprising:
    - a housing (1),
    - a flat locking spring (6), locked in the housing (1),
    - a removable heel (10),
    - a mortise piece (22) also called female part, configured to fit on the housing (1) and to contain a notch (23),
    - a second flat spring (24), locked in the notch (23) of the mortise piece (22), configured to be compatible with the flat locking spring (6).
  2. Device according to claim 1, wherein the housing (1) is fixed to the insole or machined under the sole of the shoe and the mortise piece (22) is fixed or machined in the heel (10).
  3. Device according to claim 1, according to another embodiment, wherein the housing (1) is fixed or machined in the heel (10) and the mortise piece (22) is fixed to the insole or machined under the shoe sole.
  4. Device according to any of the preceding claims, wherein the housing (1) and the mortise piece (2) are fixed to the elements (insole of the shoe and heel) by fasteners, such as screw, for example.
  5. Device according to any of the preceding claims, wherein the flat locking spring (6) is formed by a locking protruding member (9), by an upper bent part (7) to be locked in the notch (21) of the housing (1) and by a folded tab (8) allowing it to be grasped, outside the mechanism.
  6. Device according to any of the preceding claims, wherein the second flat spring (24) is a flat spring folded at least three times (25; 26; 26') to have a suitable hollow shape (25), such as a M-shaped, for example, to receive the protruding member (9) of the locking spring (6).
  7. Device according to any of the preceding claims, wherein the second spring (24) can be folded twice more at its ends in order to create two locking bent parts (27; 27 ') allowing it to be locked in the notch (23) of the mortise piece (22).
  8. Device according to any of Claims 1 to 4, according to another embodiment, wherein the locking spring (6) comprises a hollow part like an inverted M shape instead of a protruding V shape (9) and wherein the second spring (24) forms an inverted V and not a M, in order to serve as the locking protruding part.
  9. Device according to any of the preceding claims, wherein the interlocking movement of the mortise piece (22) on the housing (1) is a transverse movement from rear to front.
  10. Device according to any one of the preceding claims, wherein the protruding member (9) does not jam the sliding of the housing (1) in the mortise piece (22) thanks to its particular inclination given by an obtuse angle.
EP18833683.8A 2017-12-28 2018-12-27 Device for attaching interchangeable heels for shoes with two springs Active EP3731686B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1771439A FR3062036B1 (en) 2017-01-26 2017-12-28 DEVICE FOR FIXING INTERCHANGEABLE HEELS FOR SHOES WITH TWO SPRINGS
PCT/FR2018/000272 WO2019129938A1 (en) 2017-12-28 2018-12-27 Device for attaching interchangeable heels for shoes with two springs

Publications (2)

Publication Number Publication Date
EP3731686A1 EP3731686A1 (en) 2020-11-04
EP3731686B1 true EP3731686B1 (en) 2021-07-21

Family

ID=65019540

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18833683.8A Active EP3731686B1 (en) 2017-12-28 2018-12-27 Device for attaching interchangeable heels for shoes with two springs

Country Status (3)

Country Link
US (1) US20240225194A1 (en)
EP (1) EP3731686B1 (en)
WO (1) WO2019129938A1 (en)

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Also Published As

Publication number Publication date
US20240225194A1 (en) 2024-07-11
WO2019129938A1 (en) 2019-07-04
EP3731686A1 (en) 2020-11-04

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