TELESKOPISCHER WANDKLEMMRAHMEN

Description

PURPOSE OF THE INVENTION

[0001] This invention refers to a new telescopic wall-clamp frame unit for a door, meant to regulate based on the wall thickness of the work, improve the quality and speed of the installation and serving as a fire-break.HISTORY OF THE INVENTION

[0002] The invention pertains to the construction Technology Area, specifically, manufacture of doors with steel frame.

[0003] Doors with steel frame and fire-break system are widely known in the State of the Art, but regarding their installation, is common knowledge they are usually installed before finishing the work, which may cause a poor appearance of the door on the work, as it might receive blows, stains, scratches or other imperfections during it. There is also the risk of an incorrect handling of the door that may cause an incorrect adhesion of the concrete on the side of the door, which affects both the final appearance of the door and its physical characteristics, resistance and durability.

[0004] To optimise these aspects, a widely known technique is installing fixed size wall-clamping frames that form a constructive system based on their placement on a preestablished wall width. They are installed by securing them to the door frame and can adjust to the total width of the wall, with the inconvenience of not being able to adjust them, as they have fixed manufacturing measures.

[0005] Regarding adjustable or telescopic frames, several models are known in the market, with regulation ranges of around 25 millimetres, which serve to cover some minor irregularities of the wall surface but cannot adapt to a wide range of wall thicknesses. This is the case of the tool to secure a steel door frame described on invention ES 1 060 095 U, which has an inconvenience: the adjustment to the wall width depends on the tension screws joining the pieces, so the maximum adjustment is the size of the screw, and it can only be adjusted to a certain type of frame.

[0006] On the other hand, telescopic frame solutions based on similar models must be mentioned, but they have nothing in common with the object of this invention, as they are not a part of the steel frame door manufacturing field since they are manufactured with different materials and purposes. This is the case of invention ES 2 080 651 R, created from materials that are not steel, with a lower mechanical resistance than steel; besides, these solutions don't serve as fire-breaks. A further example of a telescopic wall-clamping frame for a door is disclosed in DE20109862 U1.DESCRIPTION OF THE INVENTION

[0007] The invention consists of a telescopic wall-clamping frame unit for a door according to claim 1, that serves as a fire-break, manufactured from steel, to solve the following problems: obtaining an adjustment of over 65 millimetres and improving the quality and speed of the product on-site installation. This invention includes a pressure angle that is attached to the frame as well as a wall clamp coupled to them.

[0008] The pressure angle is screwed to the frame secured to the wall; the pressure angle consists of two metallic profiles, attached at a minimum distance from each other by means of welding points. The internal profile has a 90° L shape and the external one is similar, but with an end fold. The pressure angle serves as a guide to lodge the wall clamp correctly, whose length can be adjusted depending on the specifications of the work. The frame to which the pressure angle plus wall clamp unit is attached is variable: it does not have to be a specific type of frame.

[0009] The telescopic wall-clamping frame is assembled after finishing the work, so the installation time is lower as the pressure angle shape, which serves as a fixed measure guide for the wall clamp, makes the installation simpler: there is no need to screw and the parts only have to be fitted in, given that the guide has the minimum distance to serve as a fastener and regulates the total length of the invention, because the wall clamp can cover the entire length of the pressure angle. The geometrical properties of the unit improve the physical and mechanical characteristics and the resistance of the telescopic wall-clamping frame, as this section has a high inertia to external efforts; in other words, it tends to remain stable from external mechanical aggressions.

[0010] As this invention is a highly adjustable telescopic frame there is no need to verify beforehand the fixed measure on-site and it also solves possible problems related to wall thickness or irregularities, as it is extendible and covers a wide regulation. This regulation is around three times higher than current solutions. The invention is based on the ability of the wall-clamping profile to cover a distance of over 65 millimetres thanks to the guideline provided by the pressure angle, so it can adapt to walls of very different thicknesses.

[0011] This invention also improves the mechanical characteristics of the door: it covers the entire width of the wall so the wall is protected, and the joint between the door and the wall and the lining are preserved. Specifically, it provides a higher resistance to the fire-break door in case of a fire because the joint between the telescopic wall-clamping frame and the total width of the wall is more resistant than in traditional solutions, where a part of the wall remains uncovered. Moreover, introducing several insulating materials between wall and frame is possible.DESCRIPTION OF THE DRAWINGS

[0012] In order to facilitate the understanding of this descriptive document, as an integral part, we provide now two illustrative, non-limiting figures showing the object of the invention. Figure 1.- It shows a plan view of the telescopic wall-clamping frame, retracted, containing a frame (1), a pressure angle (2), a wall clamp (3), an internal space (4) and a wall (5). Figure 2.- It shows a plan view of the telescopic wall-clamping frame, extended, with the same elements as the previous figure. Figure 3.- It shows a plan view of a telescopic wall-clamping frame, which does not form part of the claimed invention, retracted, containing a modified frame (6), and L-shaped profile (7), a wall clamp (3), an internal space (4) and a wall (5). Figure 4.- It shows a plan view of a telescopic wall-clamping frame, which does not form part of the claimed invention, extended, with the same elements as the previous figure. PREFERABLE ASSEMBLY OF THE INVENTION

[0013] The invention is used on steel frame doors. The frame (1) is attached to the wall (5) by traditional fastening means: clamps or screws. The pressure angle (2) is meant to be screwed to the frame (1) via pre-existing holes.

[0014] Once with the unit formed by the frame (1), pressure angle (2) fastened to the work, the wall clamp (3) is assembled and moved inside the pressure angle (2) until reaching the wall thickness of the work (5). This way, the unit can be adapted to, e.g., a 115 mm thick wall or a 180 mm thick wall, as the maximum adjustment possible is 65 millimetres.

[0015] The pressure angle (2), which represents the main innovation of this invention, consists of two metallic profiles joined at a minimum distance by means of welding points, the internal profile is L-shaped and the external one is similar, with an end fold.

[0016] There is an internal space (4) between the pressure angle (2), the wall clamp (3) and the wall (5) which can hold any insulating material, fire-break materials are preferred. The protective element of the back side of the telescopic wall-clamping frame is meant to be determined by a cement mortar screed covering its entire length, so the mechanical characteristics of the frame are preserved.

[0017] A second option for the assembly is forming a modified frame (6) with the frame and one of the pieces of the pressure angle, which will be coupled to the second piece of the pressure angle, an L-shaped profile (7) with screws, as in the previous model. The wall clamp (3) is introduce in the guide in an analogous manner as the previous one and the unit is installed and works in the same way, also forming an internal space (4) for placing any insulating materials, the only difference being the fasteners between the mentioned parts.

[0018] After an extensive description of this invention and how to install it, we deem further explanations unnecessary for an expert on the subject to understand its scope and the benefits it provides. We state that, given its simplicity, it can be put into practice by different assembly methods within the scope of the appended claims.

Claims

1. Telescopic wall-clamping frame for a door, comprising a steel frame (1) and a wall clamp (3), said telescopic wall clamping frame further including a pressure angle (2) which is fastened by means of screws to the steel frame (1), the pressure angle comprising two metallic profiles joined at a minimum distance by means of welding points, said two metallic profiles comprising an L-shaped internal profile (7) and a similar external one (6), with an end fold, so the telescopic wall-clamping frame can be coupled to a variable thickness wall (5), the wall clamp (3) being housed in the pressure angle , thereby creating an internal space (4) between the pressure angle (2), the wall clamp (3) and the variable thickness wall (5) to which the steel frame (1) is configured to be attached, for placing various insulating materials within it (4).

2. Telescopic wall-clamping frame, according to claim 1, wherein the internal profile of the pressure angle is L-shaped and the external profile is similar to the internal profile and contains said end fold, so the pressure angle serves to guide, house and secure the wall clamp (3) correctly.