ES2734738T3

ES2734738T3 - Variable geometry connection device for straps, objects, clothing parts and accessories

Info

Publication number: ES2734738T3
Application number: ES15817930T
Authority: ES
Inventors: Breton Yann Le
Original assignee: Readynovation SAS
Current assignee: Readynovation SAS
Priority date: 2014-11-03
Filing date: 2015-11-03
Publication date: 2019-12-11
Anticipated expiration: 2035-11-03
Also published as: FR3027774A1; US20170318912A1; EP3214964A1; EP3214964B1; WO2016071626A1; FR3027774B1; CN106998857A

Abstract

Dispositivo destinado a asegurar la conexión de correas, de objetos o de partes de ropa y de accesorios caracterizado por el hecho de que comprende dos piezas estrictamente idénticas y complementarias, de modo que se pueden asociar para que así formen un conjunto coherente, para hacer esto, estas piezas disponen de un cuerpo principal formado por dos o tres lóbulos (2) paralelos que son partes planas y curvas que se imbrican unas en las otras, el dispositivo se caracteriza por el hecho de que estos lóbulos, por una parte, están equipados con órganos móviles de forma circular que trabajan en flexión y que aseguran el bloqueo del dispositivo para su parte macho y, por otra parte, de órganos móviles de forma circular que trabajan en flexión como botones pulsadores (6) que aseguran el desbloqueo del dispositivo para su parte hembra, la arquitectura de las piezas y su modo de conexión no solo permite ensamblar dos piezas, sino también tres, cuatro, cinco piezas o más simultáneamente, permitiendo de esta forma responder a funcionalidades particulares o a geometrías de correas específicas.Device intended to ensure the connection of straps, objects or parts of clothing and accessories characterized by the fact that it comprises two strictly identical and complementary pieces, so that they can be associated so that they form a coherent set, to do this , these pieces have a main body formed by two or three parallel lobes (2) that are flat and curved parts that are interwoven in each other, the device is characterized by the fact that these lobes, on the one hand, are equipped with circularly moving bodies that work in flexion and that ensure the locking of the device for its male part and, on the other hand, of circularly moving bodies that work in flexion as push buttons (6) that ensure the unlocking of the device for its female part, the architecture of the pieces and its connection mode not only allows two pieces to be assembled, but also three, four, five pieces or more simultaneously nevertheless, allowing in this way to respond to particular functionalities or to specific belt geometries.

Description

DESCRIPCIÓNDESCRIPTION

Dispositivo de conexión de geometría variable para correas, objetos, partes de ropa y accesoriosVariable geometry connection device for straps, objects, clothing parts and accessories

La presente invención concierne a un dispositivo destinado a asegurar la conexión de correas, de objetos o de partes de ropas y de accesorios. Este dispositivo, que es una hebilla de enganche rápido, presenta un cierto número de ventajas con respecto a los sistemas clásicos, véase por ejemplo el sistema divulgado en el documento US5520036, en efecto, estos últimos no han sabido renovarse tanto a nivel de la funcionalidad como de la racionalización de sus componentes.The present invention concerns a device intended to ensure the connection of belts, objects or parts of clothing and accessories. This device, which is a quick hitch buckle, has a number of advantages over classic systems, see for example the system disclosed in document US5520036, in fact, the latter have failed to renew so much at the level of functionality as of the rationalization of its components.

El dispositivo según la invención permite responder a estas necesidades, en efecto, el mismo comprende según una primera característica dos piezas estrictamente idénticas y complementarias, de modo que se las puede asociar para que así formen un ensamblaje coherente, para ello, estas piezas disponen de un cuerpo principal dotado con dos o tres lóbulos paralelos que son partes planas y curvas que se imbrican unas en las otras, estos lóbulos están equipados por una parte con órganos móviles de forma circular que trabajan en flexión y que aseguran el bloqueo del dispositivo para su parte macho y, por otra parte, de órganos móviles de forma circular que trabajan en flexión como botones pulsadores, que aseguran el desbloqueo del dispositivo para su parte hembra, la arquitectura de las piezas y su modo de conexión permiten no solo el ensamblaje de dos piezas, sino también de tres, cuatro, cinco piezas o más, permitiendo de esa manera responder simultáneamente a funcionalidades particulares o a geometrías de correas específicas.The device according to the invention allows to respond to these needs, in fact, it comprises, according to a first characteristic, two strictly identical and complementary pieces, so that they can be associated so that they form a coherent assembly, for this, these parts have a main body endowed with two or three parallel lobes that are flat and curved parts that are interwoven in each other, these lobes are equipped on the one hand with circularly movable organs that work in flexion and that ensure the blocking of the device for male part and, on the other hand, of circularly moving bodies that work in flexion as push buttons, which ensure the unlocking of the device for its female part, the architecture of the parts and its connection mode allow not only the assembly of two pieces, but also of three, four, five pieces or more, thus allowing to respond simultaneously to functional particular ades or specific belt geometries.

Según modos particulares de realización:According to particular embodiments:

- La implantación de la hebilla destinada a la fijación de la correa puede variar, la misma puede estar implantada en saliente con respecto al cuerpo principal o estar directamente integrada en el mismo.- The implantation of the buckle destined to the fixation of the belt can vary, it can be implanted in projection with respect to the main body or be directly integrated in it.

- La geometría de los botones pulsadores puede variar en función de consideraciones relacionadas con la ergonomía o la geometría del cuerpo principal de la pieza.- The geometry of the push buttons may vary depending on considerations related to ergonomics or the geometry of the main body of the piece.

Los dibujos anexos ilustran la invención:The accompanying drawings illustrate the invention:

La figura 1 representa una de las piezas complementarias en vista delantera.Figure 1 represents one of the complementary pieces in front view.

La figura 2 representa una de las piezas complementarias en vista axonométrica.Figure 2 represents one of the complementary pieces in axonometric view.

La figura 3 representa una de las piezas complementarias vista desde el lado izquierdo.Figure 3 represents one of the complementary pieces seen from the left side.

La figura 4 representa una de las piezas complementarias vista desde el lado derecho.Figure 4 represents one of the complementary pieces seen from the right side.

La figura 5 representa dos piezas complementarias ensambladas en vista delantera y un corte horizontal y central según CC centrado en los órganos de bloqueo del dispositivo.Figure 5 represents two complementary pieces assembled in front view and a horizontal and central cut according to CC centered on the locking elements of the device.

La figura 6 representa una primera variante de una de las piezas complementarias en vista axonométrica.Figure 6 represents a first variant of one of the complementary parts in axonometric view.

La figura 7 representa una segunda variante de una de las piezas complementarias en vista delantera.Figure 7 represents a second variant of one of the complementary parts in front view.

La figura 8 representa una segunda variante de una de las piezas complementarias en vista axonométrica.Figure 8 represents a second variant of one of the complementary parts in axonometric view.

La figura 9 representa un ensamblaje bloqueado de una segunda variante de dos piezas complementarias en vista delantera y un corte vertical según EE, centrado en los órganos de bloqueo de la parte izquierda de dicho ensamblaje. Figure 9 represents a locked assembly of a second variant of two complementary parts in front view and a vertical section according to EE, centered on the locking members of the left part of said assembly.

En referencia a estos dibujos, el dispositivo comprende dos piezas de plástico o de cualquier otro material apropiado cuyo cuerpo principal dotado de una perforación (1), (véase la fig. 1) presenta una forma inscrita en un círculo; estas piezas son estrictamente idénticas. Estas dos piezas idénticas también son igualmente complementarias, ya que se pueden asociar y encajar para formar un ensamblaje funcional destinado a conectar correas, partes de accesorios y cualquier otro tipo de unión flexible o rígida. El modo de ensamblaje de estas dos piezas es intuitivo, ya que se basa en una arquitectura que no deja ninguna duda en cuanto a su complementariedad. De esta forma, cada pieza está constituida por un apilamiento de partes redondeadas que permiten su mutua imbricación. Estas partes redondeadas son lóbulos (2), (véase la fig. 3) cuyo trazado se define según una curva de tipo sinusoidal. Se distinguen tres tipos de lóbulo: el lóbulo superior (3), (véase la fig. 2) que constituye la parte alta de la pieza, el lóbulo inferior (4), (véase la fig.Referring to these drawings, the device comprises two pieces of plastic or any other appropriate material whose main body provided with a perforation (1), (see fig. 1) has a shape inscribed in a circle; These pieces are strictly identical. These two identical pieces are also equally complementary, since they can be associated and fitted to form a functional assembly intended to connect belts, parts of accessories and any other type of flexible or rigid joint. The mode of assembly of these two pieces is intuitive, since it is based on an architecture that leaves no doubt as to its complementarity. In this way, each piece is constituted by a stack of rounded parts that allow their mutual overlapping. These rounded parts are lobes (2), (see Fig. 3) whose layout is defined according to a sinusoidal curve. There are three types of lobe: the upper lobe (3), (see fig. 2) that constitutes the upper part of the piece, the lower lobe (4), (see fig.

2) que constituye la parte baja de la pieza y cuyo trazado se confunde con el del lóbulo superior (3). El lóbulo intermedio (5), (véase la fig. 2) que está cogido « en sándwich » entre los lóbulos superior (3) e inferior (4) y no se encuentra confundido con estos, sino construido a la inversa según un eje de simetría vertical y central. El lóbulo superior (3) está dotado en su parte central de un corte que lo atraviesa de lado a lado y que forma un botón pulsador (6), (véase la fig. 1) que tiene una perforación circular (7), (véase la fig. 1). Este botón pulsador (6) está unido al lóbulo superior (3), en su parte trasera, por un segmento de plástico que, de hecho, constituye una bisagra flexible (8), (véase la fig.2) which constitutes the lower part of the piece and whose layout is confused with that of the upper lobe (3). The intermediate lobe (5), (see fig. 2) which is caught "in sandwich" between the upper (3) and lower (4) lobes and is not confused with these, but built in reverse along an axis of vertical and central symmetry. The upper lobe (3) is provided in its central part with a cut that crosses it from side to side and forms a push button (6), (see fig. 1) that has a circular perforation (7), (see Fig. 1). This push button (6) is connected to the upper lobe (3), at its rear, by a plastic segment which, in fact, constitutes a flexible hinge (8), (see fig.

1) y que permite su movimiento a través del espesor del lóbulo superior (3) cuando se ejerce una presión sobre el mismo. Este botón pulsador (6) es de naturaleza asimétrica, ya que posee en una parte de su contorno orientada hacia la parte central de la pieza una protuberancia (9), (véase la fig. 1) de forma paralelepipédica. La cara inferior del botón pulsador (6) no se encuentra confundida con el plano de la cara inferior del lóbulo superior (3), sino que está ligeramente hacia atrás del mismo, lo que genera una zona de reserva destinada a recibir la parte saliente de una pieza complementaria que pertenece al lóbulo intermedio (5) de la pieza complementaria. La cara superior del botón pulsador (6) está abombada de modo que su perfil forma una parte saliente con respecto a la superficie externa del lóbulo superior (3). El lóbulo inferior (4) está dotado de una perforación (10), (véase la fig. 2) casi circular cuyo trazado está definido exactamente por una proyección del corte del botón pulsador (6) del lóbulo superior (3) a través de mismo.1) and that allows its movement through the thickness of the upper lobe (3) when a pressure is exerted on it. This push button (6) is of an asymmetric nature, since it has a part of its contour oriented towards the central part of the piece is a protuberance (9), (see fig. 1) in a parallelepipedic manner. The lower face of the push button (6) is not confused with the plane of the lower face of the upper lobe (3), but is slightly behind it, which generates a reserve zone intended to receive the projecting part of a complementary piece belonging to the intermediate lobe (5) of the complementary piece. The upper face of the push button (6) is bulged so that its profile forms a projecting part with respect to the outer surface of the upper lobe (3). The lower lobe (4) is provided with a perforation (10), (see Fig. 2) almost circular whose path is defined exactly by a projection of the cut of the push button (6) of the upper lobe (3) through it .

El lóbulo intermedio (5) tiene en su parte central un corte que lo atraviesa de lado a lado y que forma una arandela de bloqueo (11), (véase la fig. 1) cuyo perfil truncado (11a),(véase la fig. 4) sobresale ligeramente del plano de la superficie superior de este lóbulo intermedio (5). Esta arandela de bloqueo (11) está unida al lóbulo intermedio (5) en su parte delantera por un segmento de plástico que, de hecho, constituye una bisagra flexible (12), (véase la fig. 1) y que permite su movimiento a través del espesor del lóbulo intermedio (5) cuando se ejerce una presión sobre el mismo. La cara inferior de la arandela de bloqueo (11) no se encuentra confundida con el plano de la cara inferior del lóbulo intermedio (5), sino que está ligeramente hacia atrás del mismo, lo que genera una zona de reserva destinada a recibir el desplazamiento de esta arandela de bloqueo (11) de modo que su espesor se encuentra contenido exactamente en el espesor del lóbulo intermedio (5) en este momento. El cuerpo principal de la pieza tiene en su parte trasera una estructura saliente (13), (véase la fig. 1) que forma una presilla destinada a recibir el paso de una correa que la une a cualquier tipo de objeto, ropa o accesorio.The intermediate lobe (5) has in its central part a cut that crosses it from side to side and that forms a lock washer (11), (see fig. 1) whose truncated profile (11a), (see fig. 4) protrudes slightly from the plane of the upper surface of this intermediate lobe (5). This lock washer (11) is attached to the intermediate lobe (5) in its front part by a plastic segment which, in fact, constitutes a flexible hinge (12), (see fig. 1) and which allows its movement to through the thickness of the intermediate lobe (5) when a pressure is exerted thereon. The lower face of the lock washer (11) is not confused with the plane of the lower face of the intermediate lobe (5), but is slightly behind it, which generates a reserve area intended to receive the displacement of this lock washer (11) so that its thickness is exactly contained in the thickness of the intermediate lobe (5) at this time. The main body of the piece has a protruding structure (13) in its rear part (see fig. 1) that forms a clip designed to receive the passage of a strap that joins it to any type of object, clothing or accessory.

Según una primera variante ilustrada (véase la fig. 6), las partes laterales de los lóbulos de la pieza se pueden recortar para que la pieza presente una forma más recogida de tipo paralelepipédico y que, por esta razón, ofrezca una menor dimensión conforme a ciertas necesidades o utilizaciones. Este recorte no modifica las características esenciales de la pieza, la cual conserva las mismas propiedades funcionales. En este caso, se observa simplemente una redefinición de algunas partes de la misma, como los botones pulsadores (6) para que su funcionamiento esté en adecuación con estas nuevas características geométricas.According to a first variant illustrated (see Fig. 6), the lateral parts of the lobes of the piece can be cut so that the piece presents a more collected form of parallelepiped type and, for this reason, offers a smaller dimension according to Certain needs or uses. This cut does not modify the essential characteristics of the piece, which retains the same functional properties. In this case, there is simply a redefinition of some parts of it, such as the push buttons (6) so that its operation is in accordance with these new geometric characteristics.

Según una segunda variante ilustrada (véase la fig. 7), cada pieza del dispositivo solo presenta dos lóbulos. En este caso, ya no hay lóbulo intermedio, sino únicamente un lóbulo superior (15), (véase la fig. 7) y un lóbulo inferior (16), (véase la fig. 7) dividido por un eje de simetría vertical y central. Esta supresión de un lóbulo requiere ciertos acondicionamientos particulares que garanticen, por una parte, la perfecta tensión de las dos piezas en su unión y en segundo lugar, la preservación de las funcionalidades del dispositivo, en particular en términos de adición de piezas suplementarias.According to a second variant illustrated (see Fig. 7), each piece of the device has only two lobes. In this case, there is no longer an intermediate lobe, but only an upper lobe (15), (see fig. 7) and a lower lobe (16), (see fig. 7) divided by an axis of vertical and central symmetry . This suppression of a lobe requires certain particular conditioning that guarantees, on the one hand, the perfect tension of the two pieces at their junction and secondly, the preservation of the functionalities of the device, in particular in terms of adding additional parts.

Para garantizar una perfecta tensión de las dos piezas en su ensamblaje y, por tanto para obtener un bloqueo eficiente, la pieza integra nuevos acondicionamientos destinados a bloquear los lóbulos. Se observa, así, la presencia de una cavidad (17), (véase la fig. 8) parte hembra, acondicionada en la curvatura de la cara interna del lóbulo superior (15). De igual forma, se observa la presencia de una cavidad similar (18), (véase la fig. 9) acondicionada en la curvatura de la superficie interna del lóbulo inferior (16). Dentro de estas cavidades (17, 18), partes hembras, se alojan los extremos de los lóbulos de cada pieza, lo que permite una tensión total del ensamblaje constituido. Para poder penetrar estas cavidades (17, 18), los extremos de cada lóbulo presentan en sus bordes una zona de menor espesor (19), (véase la fig. 7). Esta zona de menor espesor no se limita al extremo delantero de cada lóbulo, sino que se desarrolla de manera concéntrica sobre todo su contorno externo.To guarantee a perfect tension of the two pieces in its assembly and, therefore, to obtain an efficient block, the piece integrates new conditioning designed to block the lobes. Thus, the presence of a cavity (17) is observed, (see Fig. 8) female part, conditioned in the curvature of the inner face of the upper lobe (15). Similarly, the presence of a similar cavity (18) is observed (see Fig. 9) conditioned on the curvature of the inner surface of the lower lobe (16). Within these cavities (17, 18), female parts, the ends of the lobes of each piece are housed, which allows a total tension of the constituted assembly. In order to penetrate these cavities (17, 18), the ends of each lobe have at their edges an area of smaller thickness (19), (see fig. 7). This area of smaller thickness is not limited to the front end of each lobe, but develops concentrically over its entire external contour.

En esta segunda variante, la pieza ya no tiene una estructura saliente (13), sino que la integra directamente conjuntamente con la perforación (1) de su cuerpo principal por medio de zonas de menor espesor (21), (véase la fig.In this second variant, the piece no longer has a projecting structure (13), but integrates it directly together with the perforation (1) of its main body by means of areas of smaller thickness (21), (see fig.

7) que forman así una presilla destinada a recibir el paso de una correa que permite unirla a cualquier tipo de objeto, ropa o accesorio7) thus forming a clip designed to receive the passage of a strap that allows it to be attached to any type of object, clothing or accessory

Por lo tanto, el dispositivo y sus variantes así definidas permiten conectar correas entre sí o directamente partes de objetos, ropa y accesorios que se deban unir o separar a voluntad. Cuando se conectan las dos partes idénticas y complementarias del dispositivo, los lóbulos se interpenetran y la arandela de bloqueo (11) de cada pieza es sometida a una presión del lóbulo superior (3, 15), (segunda variante) que la fuerza a bajar dentro de su alojamiento. En este momento, su espesor se encuentra perfectamente contenido en el espesor del lóbulo intermedio (5) o del lóbulo inferior (16) (segunda variante), permitiendo así a los lóbulos de cada pieza posicionarse perfectamente a tope en el fondo de la curvatura de su parte complementaria. En este momento, la arandela de bloqueo (11) de cada pieza ya no está en tensión por una presión vertical, ya que la misma encuentra la reserva de la cara inferior del botón pulsador (6) que le permite subir y alojarse en esta reserva. Por lo tanto, el ensamblaje se encuentra bloqueado. Para recibir una o varias piezas suplementarias, basta con ejercer una presión sobre uno de los botones pulsadores (6), que por lo tanto empujará la arandela de bloqueo (11) dentro del espesor de su lóbulo respectivo (5, 16) y permitirá la apertura parcial del ensamblaje. Efectivamente, en ese momento, las dos piezas solo están ensambladas por una sola arandela de bloqueo (11) que, de hecho, se convierte en un pivote. Este pivote induce un grado de libertad que permite la rotación de las piezas, una con respecto a la otra y, por lo tanto, la apertura del sistema que permite recibir y conectar una o varias piezas suplementarias en función de las necesidades que haya que satisfacer. Therefore, the device and its variants thus defined allow straps to be connected to each other or directly parts of objects, clothing and accessories that must be joined or separated at will. When the two identical and complementary parts of the device are connected, the lobes interpenetrate and the lock washer (11) of each piece is subjected to a pressure of the upper lobe (3, 15), (second variant) that the force to lower inside your accommodation. At this time, its thickness is perfectly contained in the thickness of the intermediate lobe (5) or the lower lobe (16) (second variant), thus allowing the lobes of each piece to position themselves perfectly butt at the bottom of the curvature of its complementary part. At this time, the lock washer (11) of each piece is no longer tensioned by a vertical pressure, since it finds the reserve of the lower face of the push button (6) that allows it to rise and stay in this reserve . Therefore, the assembly is locked. To receive one or more additional pieces, it is enough to exert pressure on one of the push buttons (6), which will therefore push the lock washer (11) into the thickness of its respective lobe (5, 16) and allow the partial opening of the assembly. Indeed, at that time, the two pieces are only assembled by a single lock washer (11) which, in fact, becomes a pivot. This pivot induces a degree of freedom that allows the rotation of the pieces, one with respect to the other and, therefore, the opening of the system that allows to receive and connect one or several additional pieces depending on the needs to be satisfied .

Claims

1. Device intended to ensure the connection of straps, objects or parts of clothing and accessories characterized by the fact that it comprises two strictly identical and complementary parts, so that they can be associated so that they form a coherent assembly, to To do this, these pieces have a main body formed by two or three parallel lobes (2) that are flat and curved parts that are interwoven in each other, the device is characterized by the fact that these lobes, on the one hand, they are equipped with circularly moving bodies that work in flexion and that ensure the locking of the device for its male part and, on the other hand, of circularly moving bodies that work in flexion as push buttons (6) that ensure the unlocking of the device for its female part, the architecture of the parts and its connection mode not only allows to assemble two pieces, but also three, four, five pieces or more simul simultaneously, thus allowing to respond to particular functionalities or to specific belt geometries.

2. Device according to claim 1, characterized in that each piece is constituted by a stack of rounded parts that allow their mutual overlapping, these rounded parts are lobes (2), whose layout is defined according to a sinusoidal type curve

Device according to claim 2, characterized in that three types of lobe are distinguished: an upper lobe (3), which constitutes the upper part of the piece, a lower lobe (4), which constitutes the lower part of the piece and whose path is confused with that of the upper lobe (3), an intermediate lobe (5), which is caught "in sandwich" between the upper (3) and lower lobes (4) and that is not confused with these , but built in reverse along an axis of vertical and central symmetry.

Device according to claim 3, characterized in that the upper lobe (3) is provided in its central part with a cut that crosses it from side to side and forms a push button (6), provided with a perforation circular (7).

Device according to claim 4, characterized in that this push button (6) is coupled to the upper lobe (3), at its rear, by a plastic segment which, in fact, constitutes a flexible hinge (8 ) and that allows its movement through the thickness of the upper lobe (3) when a pressure is exerted on it.

Device according to one of claims 4 or 5, characterized in that this push button (6) is of an asymmetric nature, since it has a protrusion in a part of its contour oriented towards the central part of the piece (9) , parallelepipedically.

Device according to one of claims 4 or 5, characterized in that the lower face of the push button (6) is not confused with the plane of the lower face of the upper lobe (3), but is slightly towards behind it, which generates a reserve zone intended to receive the projecting part of a complementary piece belonging to the intermediate lobe (5) of the complementary piece.

Device according to one of claims 4, 5 or 6, characterized in that the upper surface of the push button (6) is bulged so that its profile forms a projecting part with respect to the outer surface of the upper lobe ( 3).

Device according to one of claims 1 to 6, characterized in that the lower lobe (4) is provided with an almost circular hole (10) whose path is exactly defined by a projection of the cut of the push button ( 6) of the upper lobe (3) through it.

Device according to one of claims 1 to 3, characterized in that the intermediate lobe (5) is provided in its central part with a cut that crosses it from side to side and forms a lock washer (11 ), whose truncated profile (11a) protrudes slightly from the plane of the upper surface of this intermediate lobe (5).

Device according to claim 10 characterized in that the lock washer (11) is coupled to the intermediate lobe (5) in its front part by a plastic segment which, in fact, constitutes a flexible hinge (12) and which allows its movement through the thickness of the intermediate lobe (5) when a pressure is exerted on it.

12. Device according to one of claims 10 or 11 characterized in that the lower face of the lock washer (11) is not confused with the plane of the lower face of the intermediate lobe (5), but is slightly backwards of the same, which generates a reserve zone destined to receive the displacement of this lock washer (11) so that its thickness is exactly contained in the thickness of the intermediate lobe (5) at that time.

13. Device according to claim 1 characterized in that the main body of the piece is provided at its rear with a protruding structure (13), which forms a clip intended to receive the passage of a belt that joins it to any type of object, clothing or accessory.

14. Device according to claim 1 characterized in that the side parts of the lobes (3, 4 and 5) of the piece are cut so that the piece has a more cut shape of parallelepiped type, this cut does not modify The essential characteristics of the piece, which retains the same functional properties, are simply observed in this case a redefinition of some parts of it, such as push buttons (6) so that its operation is in accordance with these new geometric characteristics.

15. Device according to claim 1, characterized in that each piece of the device only has two lobes (15 and 16), in this case there is no intermediate lobe, but only an upper lobe (15), and a lower lobe (16), divided by an axis of vertical and central symmetry, this suppression of a lobe requires some particular conditioning that, on the one hand, guarantees the perfect tension of the two pieces at the time of their union and, secondly, the preservation of the functionalities of the device, in particular in terms of adding additional parts.