ES1275409U

ES1275409U - FRAME SYSTEM WITH FLAP AND LID FOR PASS DOORS (Machine-translation by Google Translate, not legally binding)

Info

Publication number: ES1275409U
Application number: ES202131015U
Authority: ES
Inventors: Sanchez Ignacio Alonso; Lisón Jesús Sánchez
Original assignee: Schegg Iberica Slu
Current assignee: Schegg Iberica Slu
Priority date: 2021-05-19
Filing date: 2021-05-19
Publication date: 2021-07-28
Anticipated expiration: 2031-05-19
Also published as: ES1275409Y

Abstract

Frame system with overlap and cover for passage doors on panels, either made of polyurethane foam or plasterboard, characterized in that the assembly is carried out by fixing the assembly already assembled and formed by the outer frame with overlap (3) and the leaf, or the leaves if the door has two passage leaves, to the outside of the panel (1) and on the inside of the panel (1) to fix the three profiles of the interior frame (4) to the panel (1) and to the outer frame with overlap (3) after which the assembly of the passage door would end when the 3 profiles of the flashing (2) were clipped on the outside of the panel (1) to the outer frame with overlap (3) and on the inside from the panel (1) to the inner frame (4). (Machine-translation by Google Translate, not legally binding)

Description

DESCRIPCIÓNDESCRIPTION

SISTEMA DE MARCO CON SOLAPE Y TAPETA PARA PUERTAS DE PASOFRAME SYSTEM WITH FLAP AND LID FOR PASS DOORS

OBJETO DE LA INVENCIÓNOBJECT OF THE INVENTION

El objeto de la presente invención es mostrar un sistema de montaje de puertas de paso fijadas sobre paneles, ya sean de espuma de poliuretano o de placa de yeso. En la actualidad, el enorme auge que están teniendo los sistemas de construcción mediante paneles, con espuma de poliuretano o placa de yeso(Pladur) esta propiciando la aparición de nuevas soluciones constructivas. The object of the present invention is to show a system for mounting passage doors fixed on panels, whether made of polyurethane foam or plasterboard. At present, the enormous boom that construction systems using panels, with polyurethane foam or plasterboard (Pladur) are having, is leading to the appearance of new construction solutions.

Si bien en su origen, los paneles de espuma de poliuretano casi exclusivamente eran utilizados para aplicaciones frigoríficas debido a sus magnificas características de aislamiento térmico, en la actualidad se utilizan también como elementos divisores y como tabiques livianos. Su facilidad de manipulación, su bajo peso especifico frente al hormigón y la bajada en sus costes de fabricación los hacen ideales para las construcciones modernas, tan apremiadas por bajar los tiempos de ejecución y bajar los costes. De igual modo, los paneles de placa de yeso que iniciaron su aplicación con múltiples detractores, al ampliar su oferta de modelos y mejorar sus características, han incrementado notablemente su cuota de mercado.Although originally, polyurethane foam panels were almost exclusively used for refrigeration applications due to their excellent thermal insulation characteristics, today they are also used as dividing elements and as lightweight partitions. Their ease of handling, their low specific weight compared to concrete and their lower manufacturing costs make them ideal for modern constructions, so hard-pressed to reduce execution times and lower costs. Similarly, the gypsum board panels that began their application with multiple detractors, by expanding their range of models and improving their characteristics, have notably increased their market share.

Por lógica, en todas aquellas instalaciones donde se utilicen paneles, se necesitarán instalar puertas que comuniquen unas estancias con las contiguas. Es este campo de aplicación, a donde se dirige la invención que se presenta.Logically, in all those installations where panels are used, it will be necessary to install doors that connect some rooms with the adjoining ones. It is this field of application where the invention being presented is directed.

ANTECEDENTES DE LA INVENCIÓNBACKGROUND OF THE INVENTION

Hasta el momento, las soluciones constructivas que se han utilizado para la instalación de puertas de paso sobre paneles se basan en la utilización de un marco y de un contramarco, ya sean de aluminio, de PVC o de fibra. La idea consiste en la utilización de dos perfiles con una forma genérica de ángulo, denominados marco y contramarco, de modo que cada uno se fija sobre una cara del panel, exterior e interior, produciéndose el solape de sus lados normalmente con un tomillo, se consigue un montaje final en forma de una U, que abraza el panel, a partir de dos ángulos en forma de L.Until now, the constructive solutions that have been used for the installation of passage doors on panels are based on the use of a frame and a counter frame, whether made of aluminum, PVC or fiber. The idea consists in the use of two profiles with a generic angle shape, called frame and counter frame, so that each one is fixed on one face of the panel, exterior and interior, producing the overlap of its sides. usually with a thyme, a final assembly in the shape of a U, which hugs the panel, is achieved from two L-shaped angles.

Este sistema supuso un gran avance, y permitió que con los mismos perfiles se pudieran acometer montajes con distintos tipos de anchura de paneles. Cuando los paneles son de escaso espesor el encuentro entre ambos ángulos es amplio y cuando el espesor aumenta el encuentro entre ambos ángulos se hace menor. This system represented a great advance, and allowed that with the same profiles it was possible to undertake assemblies with different types of panel width. When the panels are thin, the meeting between both angles is wide and when the thickness increases, the meeting between both angles becomes less.

Este sistema exige que tanto el marco como el contramarco se tengan que fijar en cada uno de sus perfiles a un lado del panel y posteriormente se deben fijar entre ellos por la cara vista del panel que aparece al generar el hueco, resultando un sistema de montaje muy flexible pero con una alta carga de mano de obra, porque una vez acabado de montar el marco hay que añadir la hoja, o las hojas, dependiendo si es una puerta de una hoja o de dos. Además, toda esta operativa de montaje se realiza en el lugar donde se encuentra el hueco, sin posibilidad de llevar parte del trabajo pre-montado. Como ejemplo de este sistema encontramos el Modelo de Utilidad U9701272.This system requires that both the frame and the counter-frame have to be fixed in each of their profiles to one side of the panel and subsequently they must be fixed between them by the visible face of the panel that appears when the gap is generated, resulting in a mounting system very flexible but with a high labor load, because once the frame is finished mounting, the leaf or leaves must be added, depending on whether it is a one-leaf or two-leaf door. In addition, all this assembly operation is carried out in the place where the hole is located, without the possibility of carrying part of the pre-assembled work. As an example of this system we find the Utility Model U9701272.

La innovación que se presenta viene a mejorar esta carencia de alta necesidad de mano de obra, pero sin perder las ventajas del antiguo sistema que le dotan de una alta flexibilidad para adaptarse a paneles de diferentes espesores con un número reducido de perfiles.The innovation that is presented improves this lack of high need for labor, but without losing the advantages of the old system that give it high flexibility to adapt to panels of different thicknesses with a reduced number of profiles.

EXPLICACIÓN DE LA INVENCIÓNEXPLANATION OF THE INVENTION

La innovación que se presenta consiste en un marco exterior con solape(3) que fijado mediante tornillos(7) a un marco interior(4), genera un conjunto que se fija al exterior del panel(1) mediante unos tornillos(5) y por el interior del panel(1) con otros tornillos(6). Al no existir la necesidad de introducir ningún tornillo por la cara vista que aparece en el panel(1) al generar el hueco, ya que todos los tornillos se aplican o en el exterior o en el interior del panel(1), surge la posibilidad de incorporar la hoja, ya instalada desde fábrica en el marco exterior con solape(3).The innovation that is presented consists of an outer frame with overlap (3) that is fixed by screws (7) to an inner frame (4), generates a set that is fixed to the outside of the panel (1) by means of screws (5) and inside the panel (1) with other screws (6). As there is no need to introduce any screw through the visible face that appears in the panel (1) when generating the hole, since all the screws are applied either on the outside or inside the panel (1), the possibility arises to incorporate the leaf, already installed from the factory in the outer frame with overlap (3).

Así, la novedad principal del sistema que se presenta reside en que el marco exterior con solape(3) junto con la hoja, o las hojas de la puerta si es de doble hoja, se instalan en el panel(1) pre-montados. El marco exterior con solape(3), ya viene con sus tres lados, dos laterales y el montante superior, unidos desde también viene desde fábrica la hoja, con sus cuatro lados completamente montados. De este modo, la instalación de la puerta consiste en atornillar con tomillos(5) el conjunto formado por el marco exterior con solape(3) y la hoja de la puerta al panel(1) y luego atornillar el marco interior(4), tanto al panel(1) mediante unos tornillos(6) como al marco exterior con solape(3) mediante otros tornillos(7). Este sistema de montaje es enormemente práctico y eficiente porque ahorra una gran cantidad de mano de obra y permite una gran flexibilidad.Thus, the main novelty of the system that is presented resides in that the outer frame with overlap (3) together with the leaf, or the leaves of the door if it is double leaf, are installed in the panel (1) pre-assembled. The outer frame with overlap (3), already comes with its three sides, two sides and the upper pillar, joined from the blade also comes from the factory, with its four sides fully assembled. Thus, the installation of the door consists of screwing with screws (5) the assembly formed by the outer frame with overlap (3) and the door leaf to the panel (1) and then screwing the inner frame (4), both to the panel (1) by means of screws (6) and to the outer frame with overlap (3) by means of other screws (7). This mounting system is extremely practical and efficient because it saves a great deal of labor and allows great flexibility.

Cuando el panel(1) es de un espesor de 40mm, el montaje es el que aparece en la Figura 1, pero y ¿cuándo el panel aumenta de espesor hasta 60mm, 80mm,...? Pues en la Figura 3 se presenta un montaje donde encontramos un perfil prolongador(8) que básicamente es un perfil de la serie 40mm, 40x10, 40x20, 40x40, 40x60 y 40x100, y que fijado al marco exterior con solape(3) mediante unos tornillos(7") insertados a través de unos orificios(12) en una de las paredes del tubo, permite al sistema adaptarse a los diferentes espesores de panel(1), ya que incluso podemos hacer combinaciones de estos perfiles de 40mm.When the panel (1) is 40mm thick, the assembly is as shown in Figure 1, but what about when the panel increases in thickness to 60mm, 80mm, ...? Well, in Figure 3 an assembly is presented where we find an extension profile (8) which is basically a profile of the 40mm, 40x10, 40x20, 40x40, 40x60 and 40x100 series, and which is fixed to the outer frame with overlap (3) by means of some Screws (7 ") inserted through holes (12) in one of the tube walls, allows the system to adapt to different panel thicknesses (1), since we can even make combinations of these 40mm profiles.

El sistema de montaje incluye un perfil de tapajuntas(2), que clipado al marco exterior con solape(3) y al marco interior(4), permite esconder los distintos tornillos de anclaje de los marcos al panel(1) y también mejorar la estética.The mounting system includes a flashing profile (2), which clipped to the outer frame with overlap (3) and to the inner frame (4), allows hiding the different anchoring screws of the frames to the panel (1) and also improves the esthetic.

BREVE DESCRIPCIÓN DE LOS DIBUJOSBRIEF DESCRIPTION OF THE DRAWINGS

Como complemento de las descripciones expuestas se acompañan 4 dibujos donde con carácter ilustrativo, y no limitativo, se visualizan las características de la invención que se pretende registrar, para una mejor comprensión de ésta. Así, se ha representado lo siguiente:As a complement to the exposed descriptions, 4 drawings are attached where, by way of illustration, and not limiting, the characteristics of the invention that it is intended to register are displayed, for a better understanding of it. Thus, the following has been represented:

Figura 1: Muestra una imagen de una sección transversal en un plano paralelo al suelo del conjunto de perfiles que constituyen el marco de la puerta de paso ya instalado sobre el panel y con su tapajuntas(2) por ambas caras del panel(1). Figure 1: Shows an image of a cross section in a plane parallel to the ground of the set of profiles that make up the frame of the passage door already installed on the panel and with its flashing (2) on both sides of the panel (1).

Figura 2: Muestra un despiece con una sección transversal de los tres perfiles que se necesitan para el montaje mas simplificado, y que son el marco exterior con solape(3), el marco interior(4) y el tapajuntas(2). Figure 2: Shows an exploded view with a cross section of the three profiles that are needed for a more simplified assembly, which are the outer frame with overlap (3), the inner frame (4) and the flashing (2).

conjunto de perfiles que constituyen el marco de la puerta de paso junto con un perfil prolongador(8) y ya instalado sobre el panel.set of profiles that make up the frame of the passage door together with an extension profile (8) and already installed on the panel.

Figura 4: Muestra una imagen en perspectiva del marco exterior con solape(3) pre-montado junto con la hoja y listo para atornillarse sobre la cara externa del panel(1) y sobre el que se cliparán los tres perfiles del tapajuntas(2). Por la parte interior del panel(1) se pueden observar los tres perfiles del marco interior(4) listos para ser atornillados sobre el marco exterior con solape(3) y sobre la cara interna del panel(1), apreciándose como a continuación el montaje concluiría con el clipado de los tres perfiles de tapajuntas(2) con el marco interior(4). Figure 4: Shows a perspective image of the outer frame with overlap (3) pre-assembled together with the sheet and ready to be screwed onto the external face of the panel (1) and onto which the three profiles of the flashing (2) will be clipped . On the inside of the panel (1) you can see the three profiles of the inner frame (4) ready to be screwed onto the outer frame with overlap (3) and onto the inner face of the panel (1), showing as below the Assembly would conclude with the clipping of the three flashing profiles (2) with the inner frame (4).

REALIZACIÓN PREFERENTE DE LA INVENCIÓNPREFERRED EMBODIMENT OF THE INVENTION

El sistema de montaje que se presenta comienza con los montajes en fábrica del marco exterior con solape(3) junto con la hoja completa, y en caso de ser necesario, también es en este momento cuando se adjunta al conjunto el perfil prolongador(8). Para la confección del marco exterior con solape(3) se unen los tres perfiles que lo componen, dos laterales y un montante superior, mediante unas escuadras de fijación en los dos encuentros entre los perfiles laterales y el montante superior. Estos encuentros entre los perfiles laterales y el montante, se realizan previo corte de los extremos de los perfiles que se confrontan en un ángulo de 45°, de forma que al unirlos mediante una escuadra queda constituida la unión a 90° entre ambos perfiles. Este proceso se repite de modo idéntico para los perfiles de la hoja, que formará un perímetro cerrado con dos perfiles laterales y dos montantes, uno superior y otro inferior.The assembly system presented begins with the factory assemblies of the outer frame with overlap (3) together with the complete sash, and if necessary, it is also at this time when the extension profile (8) is attached to the assembly. . To make the outer frame with overlap (3), the three profiles that compose it, two sides and a top upright, are joined by means of fixing brackets at the two junctions between the side profiles and the top upright. These encounters between the side profiles and the upright are made after cutting the ends of the profiles that face each other at an angle of 45 °, so that when they are joined by means of a square, the joint at 90 ° between both profiles is formed. This process is repeated identically for the sash profiles, which will form a closed perimeter with two side profiles and two uprights, one upper and one lower.

Con el marco exterior con solape(3) ya montado y unido a la hoja de la puerta ya montada, se procede a cortar los 6 perfiles tapajuntas(2), en corte recto en su encuentro con el suelo y en 45° en su encuentro entre el tapajuntas(2) lateral y el tapajuntas(2) en el montante. Llegados a este punto y tras haber cortado los 3 perfiles que constituyen el marco interior(4), cortes efectuados con las mismas características que los tapajuntas(2), podemos comenzar el montaje atornillando el conjunto formado por marco exterior con solape(3) y la hoja, al panel(1). Para fijar el marco exterior con solape(3) al panel(1) encontramos en el perfil unas acanaladuras(9) en toda la longitud del perfil, donde podemos fijar la punta de los tornillos(5) de modo que esta operación resulte mas rápida. Con el marco exterior con solape(3) ya fijado al hueco, se proceden a fijar los marcos para lo que nos valemos de una acanaladura(10) presente en toda la longitud del perfil. El paso siguiente es fijar los marcos entre si, para lo que insertamos unos tornillos(7) valiéndonos del punto de referencia que nos marca una segunda acanaladura(11) presente en toda la longitud del perfil del marco interior(4).With the outer frame with overlap (3) already assembled and attached to the door leaf already assembled, proceed to cut the 6 flashing profiles (2), in a straight cut where they meet the ground and 45 ° when they meet between the side flashing (2) and the flashing (2) on the stud. At this point and after having cut the 3 profiles that make up the inner frame (4), cuts made with the same characteristics as the flashing (2), we can begin the assembly by screwing the set formed by the outer frame with overlap (3) and the leaf, to the panel (1). To fix the outer frame with overlap (3) to the panel (1) we find grooves (9) in the profile along the entire length of the profile, where we can fix the tips of the screws (5) so that this operation is faster. . With the outer frame with overlap (3) already fixed to the hole, proceed to fix the frames for which we use a groove (10) present along the entire length of the profile. The next step is to fix the frames to each other, for which we insert some screws (7) using the reference point that marks us a second groove (11) present along the entire length of the inner frame profile (4).

El sistema que se propone tiene la capacidad de adaptarse a diferentes anchuras de panel(1), lo cuál resulta muy práctico porque en el mercado hay diferentes estándares. Para poder cubrir un aumento en el ancho del panel(1) en la Figura 3 se representa el montaje a seguir y que consiste en la introducción de un perfil prolongador(8) que quedará entre el marco exterior con solape(3) y el marco interior(4) y será fijado por unos tornillos(7"). Para fijar estos tornillos se practican unos orificios(12), en la pared del tubo de 40 enfrentada a la pared en contacto entre el marco exterior con solape(3) y el perfil prolongador(8), sirviendo estos orificios como accesos por donde introducir los tornillos(7") que fijan las paredes en contacto entre ambos perfiles. El perfil prolongador(8) es básicamente un tubo de la serie 40mm que puede tener diferentes medidas , manteniendo fija el lado de 40mm, para adaptarse a distintos espesores de panel(1). Así podemos utilizar prolongadores de 40mmx10mm, 40mmx20mm, 40mmx40mm, 40mmx60mm y 40mmx100mm.The proposed system has the ability to adapt to different panel widths (1), which is very practical because there are different standards on the market. In order to cover an increase in the width of the panel (1), Figure 3 represents the assembly to follow and that consists of the introduction of an extension profile (8) that will remain between the outer frame with overlap (3) and the frame (4) and it will be fixed by some screws (7 "). To fix these screws some holes (12) are drilled in the wall of the 40 tube facing the wall in contact between the outer frame with overlap (3) and the extension profile (8), these holes serving as accesses through which to insert the screws (7 ") that fix the walls in contact between both profiles. The extension profile (8) is basically a 40mm series tube that can have different measures, keeping the 40mm side fixed, to adapt to different panel thicknesses (1). Thus we can use extensions of 40mmx10mm, 40mmx20mm, 40mmx40mm, 40mmx60mm and 40mmx100mm.

Así, en el montaje con perfil prolongador(8) cuando ya se tiene conformado el conjunto de marco exterior con solape(3) y perfil prolongador(8) junto a la hoja, conjunto que viene conformado desde fábrica, se pasa a unir este conjunto en la obra con el panel(1). Para fijar el conjunto, se fija el marco exterior con solape(3) al panel(1) mediante unos tornillos(5) y utilizando unas acanaladuras(9) presentes en toda la longitud del perfil, donde podemos fijar la punta de los tornillos(5) de modo que esta operación resulte mas rápida. A continuación, fijamos el marco interior(4) al conjunto citado y al panel(1) por su parte interior, concluyéndose la fijación del sistema. Para la fijación del marco interior(4) al conjunto de marco exterior(3), perfil prolongador(8) y hoja nos valemos de unos tornillos(7) que fijados sobre una acanaladura(11) presente en toda la longitud del perfil del marco interior(4) fijarían a este y al perfil prolongador(8).Thus, in the assembly with an extension profile (8) when the set of outer frame with overlap (3) and extension profile (8) is already formed next to the leaf, a set that is made from the factory, this set is joined on site with panel (1). To fix the assembly, the outer frame with overlap (3) is fixed to the panel (1) by means of some screws (5) and using grooves (9) present along the entire length of the profile, where we can fix the tips of the screws ( 5) so that this operation is faster. Next, we fix the inner frame (4) to the aforementioned set and to the panel (1) from the inside, completing the fixing of the system. To fix the inner frame (4) to the outer frame assembly (3), extension profile (8) and sash, we use screws (7) that are fixed on a groove (11) present along the entire length of the frame profile. interior (4) would fix it and the extension profile (8).

Es importante reseñar que en el montaje con perfil prolongador(8) coexisten pasando por un mismo lugar, si se mira una perspectiva en planta del marco interior(4), los tornillos(7) utilizados con y sin perfil prolongador(8) y los tornillos(7") utilizados únicamente con perfil prolongador(8). Para poder utilizar este sistema se alternan los planos paralelos al suelo donde se utilizan los tornillos(7") introducidos a través de un orificio en el perfil prolongador(8) con un tomiNos(7) introducidos sobre la acanaladura(11). De no utilizar esta alternancia de tornillos, nos encontraríamos que si se intenta utilizar ambos tornillos en un mismo plano, el tornillo(7) introducido sobre la acanaladura(11) coincidiría con el orificio(12) haciendo inútil su función.It is important to note that in the assembly with an extension profile (8), when looking at a plan perspective of the interior frame (4), the screws (7) used with and without an extension profile (8) and the screws (7) coexist passing through the same place. screws (7 ") used only with the extension profile (8). To be able to use this system, alternate planes parallel to the ground where the screws (7") inserted through a hole in the extension profile (8) are used with a tomiNos (7) inserted over the groove (11). If this alternation of screws is not used, we would find that if we try to use both screws in the same plane, the screw (7) inserted on the groove (11) would coincide with the hole (12) rendering its function useless.

El paso siguiente y ya con los marcos fijados entre si, es fijar el marco interior(4) al panel(1) para lo que se utilizan unos tornillos(6) insertados en una acanaladura(10) presente en toda la longitud del perfil y que servirá de apoyo en la punta de los tornillos. Para acabar con el montaje se instala el tapajuntas(2) tanto por el perímetro interior del hueco como por el perímetro exterior. Este perfil se inserta clipado, como se muestra en las Figura 1, Figura 2 y en la Figura 3, en el marco exterior con solape(3) y también con al marco interior(4) de modo que los tornillos (5)(6)(7)(7") quedarán ocultos y darán al conjunto la estética y terminación necesaria. The next step, and with the frames fixed to each other, is to fix the inner frame (4) to the panel (1) for which some screws (6) inserted in a groove (10) present along the entire length of the profile are used and that will serve as a support on the tip of the screws. To finish the assembly, the flashing (2) is installed both on the inner perimeter of the hole and on the outer perimeter. This profile is inserted clipped, as shown in Figure 1, Figure 2 and Figure 3, in the outer frame with overlap (3) and also with the inner frame (4) so that the screws (5) (6 ) (7) (7 ") will be hidden and will give the whole the necessary aesthetics and finishing.

Claims

1. Frame system with overlap and cover for passage doors on panels, either made of polyurethane foam or plasterboard, characterized in that the assembly is carried out by fixing the assembly already assembled and formed by the outer frame with overlap (3) and the leaf, or leaves if the door has two passage leaves, to the outside of the panel (1) and on the inside of the panel (1) to fix the three profiles of the interior frame (4) to the panel itself (1) and to the outer frame with overlap (3) after which the assembly of the passage door would end when the 3 profiles of the flashing (2) were clipped on the outside of the panel (1) to the outer frame with overlap (3) and on the inside from the panel (1) to the inner frame (4).

2. Frame system with overlap and cover for interior doors according to claim 1, characterized in that the fixing of the assembly already assembled and formed by the outer frame with overlap (3) and the leaf, or the leaves if the door has two leaves of step, it is fixed to the outside of the panel (1) by means of screws (5) inserted from the outside of the panel (1) in grooves (9) present along the entire length of the overlapping outer frame profile (3).

3. Frame system with overlap and cover for interior doors according to claim 1, characterized in that the profiles of the inner frame (4) are fixed to the inside of the panel (1) by means of screws (6) inserted from the inside of the panel (1 ) on a groove (10) present along the entire length of the inner frame (4).

4. Frame system with overlap and cover for passage doors according to claim 1, characterized in that the assembly already assembled and formed by the outer frame with overlap (3) and the leaf, or the leaves if the door has two passage leaves, it is fixed to the profiles of the inner frame (4) by means of screws (7) inserted from the inside of the panel (1) on a groove (11) present along the entire length of the profile of the inner frame (4).

5. Frame system with overlap and cover for interior doors according to claims 1 to 3, characterized by having an alternative assembly that includes an extension profile (8) of 40mm series tube embedded in the outer frame with overlap (3) by the inner face using screws (7 ") that are inserted through a hole (12) in the 40mm tube.

6. Frame system with overlap and flap for interior doors according to claims 1 to 3 and 5, characterized in that the set formed by the outer frame with overlap (3) and the extension profile (8) is joined to the inner frame (4) by means of some screws inserted from the inside of the panel (1) through a groove (11) present along the entire length of the inside frame (4).