ES1320052U

ES1320052U - DEVICE FOR DRIVING MOBILE ARCHES ON RETRACTABLE COVERS ON TRUCK BOXES.

Info

Publication number: ES1320052U
Application number: ES202432343U
Authority: ES
Inventors: Navarro German Garasa
Original assignee: Toldos Botero S L
Current assignee: Toldos Botero S L
Priority date: 2024-12-17
Filing date: 2024-12-17
Publication date: 2025-06-16
Anticipated expiration: 2034-12-17
Also published as: ES1320052Y

Abstract

Mechanism for supporting and moving mobile arches in retractable covers of truck boxes, being of the type intended to be implanted in the box of a truck, and which incorporate a plurality of arches (1-1') in an inverted "U", to which a folding cover (2) is linked, one of the arches, the closest to the cabin, being attached to the box of the vehicle, while the rest of the arches (1-1') are movable along guides (3), by means of carriages (4), characterized in that the carriage (4) associated with the rear end arch (1') is attached to a steel cable (5), cable (5) that is distributed along the truck box through a pair of extreme pulleys (7) forming a closed loop, where the axis (8) of one of these pulleys is associated with a drive mechanism, such as a crank, or an electric motor with its corresponding push button, having been provided that the guides (3) have an omega profile, in which a narrowed lower slot (9) is defined, such that the lateral narrowings of said slot determine respective rolling tracks (10-10') for the wheels (11) of the carriages (4), carriages that are materialized in a plate of "L" profile, whose vertical branch includes holes for the passage of the axles of the corresponding wheels (11) of movement of the carriage on the rolling tracks (10-10'), vertical branch that has a thickness according to the width of the lower slot (9) through which it passes, extending below it to suffer a bend that ends in a horizontal surface, provided with holes (12) for screwing the lower end of the arch (1-1'). (Machine-translation by Google Translate, not legally binding)

Description

DESCRIPCIÓNDESCRIPTION

Dispositivo de accionamiento de arcos móviles en cubiertas retráctiles de cajas de camiones Device for driving movable arches on retractable truck bed covers

SECTOR DE LA TÉCNICATECHNICAL SECTOR

La presente invención se refiere a un dispositivo de accionamiento de arcos móviles en cubiertas retractiles de cajas de camiones, cuya evidente finalidad es la de facilitar sensiblemente la maniobra de desplazamiento de este tipo de arcos en la caja de un camión u otro vehículo de transporte. The present invention relates to a device for driving mobile arches on retractable covers of truck boxes, the obvious purpose of which is to significantly facilitate the movement of this type of arches on the box of a truck or other transport vehicle.

El objeto de la invención es por tanto ofrecer un mecanismo que permita realizar la extensión y retracción de la cubierta mediante una maniobra sumamente sencilla y eficaz. The object of the invention is therefore to offer a mechanism that allows the extension and retraction of the cover through an extremely simple and effective maneuver.

ANTECEDENTES DE LA INVENCIÓNBACKGROUND OF THE INVENTION

En el ámbito de aplicación práctica de la invención, son conocidas cubiertas retráctiles para cubrir la caja de un camión que comprenden una lona o similar soportada por unos arcos móviles que se desplazan desde una posición en la que la caja queda descubierta y en donde los arcos se encuentran agrupados en uno de los extremos de la misma, hasta otra posición cubierta de la caja, donde se encuentran repartidos sobre la misma soportando la lona extendida. In the field of practical application of the invention, retractable covers are known for covering the bed of a truck, which comprise a canvas or similar supported by mobile arches that move from a position in which the bed is uncovered and where the arches are grouped at one of its ends, to another position covered in the bed, where they are distributed over it supporting the extended canvas.

Usualmente el arrastre desde una posición a la otra se realiza mediante un arco móvil extremo, quedando fijo el otro arco extremo, y disponiendo el arco extremo móvil de unos medios de arrastre, mientras que los arcos intermedios a su vez son arrastrados por el movimiento de la propia lona. Usually, the drag from one position to another is carried out by means of a mobile extreme arch, with the other extreme arch remaining fixed, and the mobile extreme arch having dragging means, while the intermediate arches are in turn dragged by the movement of the canvas itself.

De forma más concreta, los arcos se vinculan a correderas que discurren por guías laterales. More specifically, the arches are linked to sliding doors that run along lateral guides.

Sin embargo esta configuración presenta problemas, ya que las correderas disponen de patines que se enganchan frecuentemente en las guías, o bien de rodamientos con un apoyo excéntrico que tiende a doblar su eje o partirlo. Además el apoyo metal con metal entre el anillo exterior del rodamiento y la guía genera arañazos y en general con el tiempo va empeorando la circulación del rodamiento por la guía. However, this configuration presents problems, as the slides have runners that frequently catch on the guides, or bearings with an eccentric support that tends to bend or break the axis. Furthermore, the metal-to-metal contact between the outer ring of the bearing and the guide causes scratches and generally impairs the bearing's movement in the guide over time.

De igual manera, para traccionar de estos arcos hace falta emplear grandes esfuerzos físicos que a todas luces sería deseable evitar. Similarly, pulling these arches requires great physical effort, which would clearly be desirable to avoid.

EXPLICACIÓN DE LA INVENCIÓNEXPLANATION OF THE INVENTION

El dispositivo de accionamiento de arcos móviles en cubiertas retráctiles de cajas de camiones que la invención propone resuelve de forma plenamente satisfactoria la problemática anteriormente expuesta en los dos aspectos comentados. The device for driving mobile arches in retractable covers of truck boxes that the invention proposes fully satisfactorily resolves the problems previously described in the two aspects discussed.

Para ello, y de forma más concreta, partiendo de la estructuración convencional anteriormente descrita, en el que la caja de camión incluye una cubierta plegable, en la que participa una lona o similar soportada por una pluralidad de arcos móviles, los cuales se desplazan desde una posición de recogida, en la que la caja del camión queda descubierta, hasta una posición de máxima extensión, en la que dicha caja queda cubierta, siendo uno de los arcos extremos solidario al chasis de la caja del camión, mientras que el otro arco extremo, el posterior incluye medios de arrastre, la invención centra sus características en el hecho de que los arcos móviles se vinculan por su extremidad libre e inferior a un carro deslizante, que incluye medios de fijación a dicha extremidad y que, se vincula a una guía abierta inferiormente, y debidamente estrangulada de modo que el carro que se desplaza por el interior de la guía solo se ve sometido a esfuerzos verticales, por el propio peso del conjunto que soporta, así como longitudinales, debido al desplazamiento que provoca la recogida y extensión de los arcos, de modo que se evitan esfuerzos excéntricos sobre los ejes de rodadura del carro, evitando así el dañado de dichos ejes, así como el atascamiento de sus ruedas debido a este tipo de esfuerzos que tienden a inclinar dichos ejes y por lo tanto la disposición de las ruedas del carro sobre la citada guía. To this end, and more specifically, starting from the conventional structure described above, in which the truck box includes a folding cover, in which a canvas or similar supported by a plurality of mobile arches participates, which move from a collected position, in which the truck box is uncovered, to a maximum extension position, in which said box is covered, one of the extreme arches being integral with the chassis of the truck box, while the other extreme arch, the rear one, includes dragging means, the invention focuses its characteristics on the fact that the mobile arches are linked by their free and lower end to a sliding carriage, which includes means for fixing to said end and which is linked to a guide open at the bottom, and duly strangled so that the carriage that moves inside the guide is only subjected to vertical forces, due to the weight of the assembly that it supports, as well as longitudinal forces, due to the movement caused by the collection and extension of the arches, so that eccentric forces on the axes of rolling of the cart, thus avoiding damage to said axles, as well as the jamming of its wheels due to this type of efforts that tend to tilt said axles and therefore the arrangement of the wheels of the cart on the aforementioned guide.

Paralelamente, se ha previsto que los medios de arrastre del arco extremo móvil se materialicen en un cable de acero que se solidariza al carro móvil de dicho arco extremo, de modo que el cable se distribuye a lo largo de la caja del camión a través de una pareja de poleas extremas formando un lazo cerrado, estando el eje de una de dichas poleas asociado a un mecanismo de accionamiento, que puede materializarse en una manivela, o bien un motor eléctrico con su correspondiente pulsador. In parallel, it has been planned that the means of pulling the mobile end arch will be materialized in a steel cable that is attached to the mobile carriage of said end arch, so that the cable is distributed along the truck box through a pair of extreme pulleys forming a closed loop, the axis of one of said pulleys being associated with a drive mechanism, which can be materialized in a crank, or an electric motor with its corresponding push button.

De esta manera, al activar el motor o accionar la manivela se provoca el giro de la polea motriz, provocando el desplazamiento del cable al que es solidario el citado carro portador del arco extremo móvil, de modo que, al estar éste vinculado a través de la cubierta flexible al resto de arcos, su desplazamiento en uno u otro sentido provocará el desplazamiento del resto de arcos, a excepción del arco extremo fijo, hasta sendas posiciones extremas de replegado o extensión total de la cubierta, pasando por cualquier punto intermedio. In this way, by activating the motor or turning the crank, the drive pulley is rotated, causing the cable to which the aforementioned mobile end arch carrying carriage is attached to move, so that, as it is linked to the rest of the arches through the flexible cover, its movement in one direction or another will cause the rest of the arches to move, with the exception of the fixed end arch, to the extreme positions of folding or full extension of the cover, passing through any intermediate point.

Se consigue de esta manera un mecanismo de accionamiento sumamente efectivo, sencillo y fácil de accionar, que permite recoger y extender la cubierta del camión en un tiempo mínimo y con un mínimo esfuerzo. This creates a highly effective, simple, and easy-to-operate drive mechanism that allows the truck's cover to be retracted and extended in minimal time and with minimal effort.

BREVE DESCRIPCIÓN DE LOS DIBUJOSBRIEF DESCRIPTION OF THE DRAWINGS

Para complementar la descripción que seguidamente se va a realizar y con objeto de ayudar a una mejor comprensión de las características del invento, de acuerdo con un ejemplo preferente de realización práctica del mismo, se acompaña como parte integrante de dicha descripción, un juego de planos en donde con carácter ilustrativo y no limitativo, se ha representado lo siguiente: To complement the description that follows and in order to help better understand the characteristics of the invention, in accordance with a preferred example of practical implementation thereof, a set of drawings is attached as an integral part of said description, in which the following has been represented for illustrative and non-limiting purposes:

La figura 1.- Muestra una vista en perspectiva posterior de un camión camión provisto de un dispositivo de accionamiento de arcos móviles realizado de acuerdo con el objeto de la presente invención. Figure 1.- Shows a rear perspective view of a truck provided with a mobile arch drive device made in accordance with the object of the present invention.

La figura 2.- Muestra una vista en perspectiva lateral del camión a nivel de los medios de accionamiento de su arco móvil extremo. Figure 2.- Shows a side perspective view of the truck at the level of the drive means of its extreme mobile arch.

La figura 3.- Muestra una vista en perspectiva del carro desplazable sobre el que van montados los arcos móviles de la cubierta.. Figure 3.- Shows a perspective view of the mobile carriage on which the mobile arches of the roof are mounted.

La figura 4.- Muestra, finalmente un detalle en perfil del carro de la figura 3 montado sobre la correspondiente guía en la que es desplazable. Figure 4.- Finally, it shows a profile detail of the carriage in figure 3 mounted on the corresponding guide on which it can be moved.

REALIZACIÓN PREFERENTE DE LA INVENCIÓNPREFERRED EMBODIMENT OF THE INVENTION

A la vista de las figuras reseñadas, puede observarse como el mecanismo de la invención está destinado a ser implantado en la caja de un camión, en la que participan una serie de arcos (1) en "U” invertida, a los que se vincula una cubierta flexible (2) y plegable, en el que el arco mas próximo a la cabina es solidario a la caja del camión, mientras que el resto de arcos son desplazables a lo largo de una pareja de guías (3) laterales. In view of the figures shown, it can be seen how the mechanism of the invention is intended to be implemented in the box of a truck, in which a series of arches (1) in an inverted "U" shape are involved, to which a flexible and foldable cover (2) is linked, in which the arch closest to the cabin is integral with the box of the truck, while the rest of the arches are movable along a pair of lateral guides (3).

De forma más concreta, el arco extremo posterior (1’) está vinculado a un carro (4) al que se solidariza un cable (5) de acero, mediante presillas (6) o elementos equivalentes, de modo que el cable (5) se distribuye a lo largo de la caja del camión a través de una pareja de poleas (7) extremas formando un lazo cerrado. More specifically, the rear end arch (1') is linked to a trolley (4) to which a steel cable (5) is attached, by means of clips (6) or equivalent elements, so that the cable (5) is distributed along the truck box through a pair of extreme pulleys (7) forming a closed loop.

Pues bien, el eje (8) de una de estas poleas está asociado a un mecanismo de accionamiento, que puede materializarse en una manivela, o bien un motor eléctrico con su correspondiente pulsador. Well, the axis (8) of one of these pulleys is associated with a drive mechanism, which can be materialized in a crank, or an electric motor with its corresponding push button.

Consecuentemente, al activar el motor o accionar la manivela se produce un desplazamiento angular de la polea (7), lo que provoca un desplazamiento longitudinal el cable (5) y consecuentemente del carro (4) vinculado al arco extremo posterior (1’), el cual se desplazará a lo largo de la pareja de guías (3). Consequently, when activating the motor or turning the crank, an angular displacement of the pulley (7) occurs, which causes a longitudinal displacement of the cable (5) and consequently of the carriage (4) linked to the rear end arch (1'), which will move along the pair of guides (3).

Tal y como se ha dicho anteriormente, al estar vinculados entre sí los arcos por la cubierta flexible (2), esto hace que el desplazamiento del arco extremo posterior (1’) ya sea en una u otra dirección, provoque finalmente el desplazamiento de todo el conjunto de arcos ya sea traccionados por la propia cubierta en las maniobras de despliegue o empujados por el arco desplazado al presionar el carro asociado al cable con el resto de carros con los que se va encontrando en su desplazamiento, permitiendo así, mediante el desplazamiento de un único arco, controlar el desplazamiento del resto de arcos de la estructura. As stated above, as the arches are linked together by the flexible cover (2), this means that the movement of the rearmost arch (1'), whether in one direction or another, ultimately causes the movement of the entire set of arches, whether pulled by the cover itself during deployment manoeuvres or pushed by the displaced arch when the trolley associated with the cable presses against the rest of the trolleys it encounters during its movement, thus allowing, by moving a single arch, to control the movement of the rest of the arches in the structure.

De acuerdo con otra de las características de la invención, y tal y como se puede observar en las figuras 3 y 4, In accordance with another of the characteristics of the invention, and as can be seen in figures 3 and 4,

Pues bien, de acuerdo ya con la invención, se ha previsto que la guía (3) presenta un perfil en omega, en el que se define una ranura inferior (9) estrangulada, de modo que los estrangulamientos laterales de dicha ranura determinan sendas pistas de rodadura (10-10’) para las ruedas (11) del carro (4), el cual presenta una configuración en "L”, cuya rama vertical incluye unos orificios para paso de los ejes de las ruedas (11) de desplazamiento del carro sobre las pistas de rodadura (10-10’), presentando el carro preferentemente cuatro ruedas dispuestas en dos agrupaciones paralelas sobre los extremos anterior y posterior de dicha rama vertical del carro. Well, according to the invention, it has been provided that the guide (3) has an omega profile, in which a narrowed lower slot (9) is defined, such that the lateral narrowings of said slot determine respective rolling tracks (10-10') for the wheels (11) of the carriage (4), which has an "L" configuration, whose vertical branch includes holes for the passage of the axles of the wheels (11) for the movement of the carriage on the rolling tracks (10-10'), the carriage preferably having four wheels arranged in two parallel groups on the front and rear ends of said vertical branch of the carriage.

La rama vertical presentará un espesor acorde al espesor de la ranura inferior (9) por la que es pasante, prolongándose ligeramente por debajo de ésta para sufrir un acodamiento que se remata en una superficie horizontal, dotada de orificios (12) para atornillado del extremo inferior (13) del arco (1’), el cual sufrirá un acodamiento horizontal en su extremo, tal como muestra la figura 4. The vertical branch will have a thickness in accordance with the thickness of the lower slot (9) through which it passes, extending slightly below this to undergo a bend that ends in a horizontal surface, provided with holes (12) for screwing the lower end (13) of the arch (1'), which will undergo a horizontal bend at its end, as shown in figure 4.

Solo resta señalar por último que, las ruedas (11) estarán asistidas por los correspondientes rodamientos, pudiendo materializarse directamente en rodamientos, los cuales comprenderán cierres laterales de estanqueidad u, opcionalmente anillos exteriores con recubrimiento elastomérico. It only remains to point out finally that the wheels (11) will be assisted by the corresponding bearings, which may be materialized directly in bearings, which will comprise lateral sealing seals or, optionally, outer rings with elastomeric coating.

Se consigue de esta manera un mecanismo cuyo accionamiento resulta mucho más suave que los mecanismos convencionales, que no se ve sometido a esfuerzos torsores que pudieran dañar los ejes de rodadura de las ruedas, incrementando sensiblemente su vida útil, así como reduciendo drásticamente las labores de mantenimiento. This results in a mechanism that operates much smoother than conventional mechanisms and is not subjected to torque stresses that could damage the wheel axles. This significantly increases its lifespan and drastically reduces maintenance work.

Claims

1a.- Mechanism for supporting and moving mobile arches in retractable covers of truck boxes, being of the type that are intended to be implanted in the box of a truck) and that incorporate a plurality of arches (1-1 ') in an inverted "U", to which a folding cover (2) is linked, one of the arches, the closest to the cabin being attached to the box of the vehicle, while the rest of the arches (1-1') are movable along guides (3), by means of carts (4), it is characterized in that the cart (4) associated with the rear end arch (1') is attached to a steel cable (5), cable (5) that is distributed along the truck box through a pair of extreme pulleys (7) forming a closed loop, where the axis (8) of one of these pulleys is associated with a drive mechanism, such as a crank, or an electric motor with its corresponding push button, it having been foreseen that the guides (3) have an omega profile, in which a narrowed lower slot (9) is defined, such that the lateral narrowings of said slot determine respective rolling tracks (10-10') for the wheels (11) of the carriages (4), carriages that are materialized in an "L" profile plate, whose vertical branch includes holes for the passage of the axles of the corresponding wheels (11) for the movement of the carriage on the rolling tracks (10-10'), vertical branch that has a thickness according to the width of the lower slot (9) through which it passes, extending below it to suffer a bend that ends in a horizontal surface, provided with holes (12) for screwing the lower end of the arch (1 1').