RU2807734C1 - Cassette modular suspended ceiling - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: elements of prefabricated suspended ceilings with noise reduction properties. A modular suspended ceiling cassette is proposed, which has front, back and lateral sides and includes a frame, a sound-absorbing panel and at least one fastener. The cassette frame includes two load-bearing and two non-load-bearing sidewalls, which together form the sides of the cassette and are located essentially in the form of a straight quadrangular prism, with the load-bearing sidewalls being parallel to each other and spaced apart at a distance determined by the location of the suspended ceiling guides. Each of these load-bearing sidewalls is equipped with at least one engagement means for detachable fastening into the suspended ceiling guide. On the front side of the cassette, each of the sidewalls is equipped with a protrusion made integral with the sidewalls and perpendicular to the sidewalls in the direction of the prism axis to form a stop for the sound-absorbing panel. The sound-absorbing panel is placed inside the frame with emphasis on the protrusions and is secured on the back side of the cassette with at least one lock. The lock includes a clamp for fixing the position of the sound-absorbing panel and two flanges made perpendicular to the clamp. These two flanges are permanently connected to the corresponding sidewalls of the frame.

EFFECT: improvement of the acoustic characteristics of the premises; ensuring the possibility of repeated dismantling of the cassette while maintaining its strength characteristics; reducing the resource consumption of the product; ensuring the possibility of installing the cassette into existing suspended ceiling systems; ensuring the possibility of using suspended ceiling cassettes in premises of arbitrary shape.

3 cl, 9 dwg

Description

TECHNICAL FIELD

The invention relates to the field of construction, and more precisely to elements of prefabricated suspended ceilings with noise reduction properties.

BACKGROUND OF THE ART

In modern designs of buildings and structures, modular suspended ceilings are widely used. Such a ceiling consists of a supporting lattice structure placed at a distance from the interfloor ceiling and modules or cassettes that are mounted in this structure with the possibility of dismantling. Due to the fact that the cassettes are fixed in the structure with the possibility of dismantling, easy access to ventilation and other communications is provided, which, as a rule, are located in the ceiling space of such a ceiling. In addition, a damaged cassette can be easily replaced if damaged.

Modular suspended ceilings with so-called hidden suspension systems are known, in which the supporting lattice structure, after installing the cassettes, is hidden and not visible from the front side of such a ceiling, that is, from the side facing the room. In this case, an essentially single plane of the ceiling is formed, and the appearance appears monolithic.

The lattice design of suspended ceilings with hidden suspension systems itself includes two types of guides. Guides of the first type, otherwise called traverses, are attached to the interfloor ceiling and are carriers for guides of the second type. Guides of the second type, otherwise called stringers, are used for mounting the cassettes themselves. Examples of such ceilings are systems offered by Knauf (https://www.knaufceilingsolutions.com/fileadmin/knaufceilingsolutions/01_products/02_metal/datasheets/sea/DS_Armstrong_MetalWorks_R-H200_Hook-On_System_EN_SEA_02.pdf), Albes (https://albes.ru /portfolio/kassetnye-potolki/sistema-perfaten-clip-in/), Metallist (https://www.grandline.ru/shop/drugie_tovary/podvesnye-i-potolocnye-sistemy/kassetnyj-potolok/zakrytyj-tip/) and others.

From the RF patent RU2658941 (published on June 26, 2018), a cassette for a modular suspended ceiling with noise reduction properties is known, which is the closest analogue of the claimed invention.

The disadvantages of the known solution are:

- excessive complexity of the cassette design;

- lack of information about how the sound-absorbing structural element is retained in the cassette and how deformation of the cassette is prevented during repeated dismantling;

- excess metal consumption of the cassette;

- the noise reduction efficiency is not optimal due to the fact that the sound-absorbing layer is located behind the perforated plane of the cassette frame;

- the shape of the cassette is limited by a rectangular parallelepiped; this reduces the range of room shapes in which such cassettes can be installed, since it becomes necessary to trim the cassettes according to the shape of the room, which reduces the strength of the known cassette and, in certain cases, installation of such a deformed cassette is not possible at all;

Therefore, there is a need to eliminate the shortcomings of the known level of technology, as well as to expand the arsenal of technical means to ensure the possibility of installing suspended ceiling cassettes with hidden suspension systems in rooms of any shape.

SUMMARY OF THE INVENTION

The technical results achieved by using the claimed invention are:

- improving the acoustic characteristics of the room;

- ensuring the possibility of repeated dismantling of the cassette while maintaining its strength characteristics;

- reducing the resource intensity of the product;

- ensuring the possibility of installing the cassette into existing suspended ceiling systems;

- ensuring the possibility of using suspended ceiling cassettes in rooms of arbitrary shape.

The stated problems are solved, and technical results are achieved due to the fact that a cassette of a modular suspended ceiling is proposed, which has a front, back and side sides and includes a frame, a sound-absorbing panel and at least one fastener. The cassette frame includes two load-bearing and two non-load-bearing sidewalls, which together form the sides of the cassette and are located essentially in the form of a straight quadrangular prism, with the load-bearing sidewalls being parallel to each other and spaced apart at a distance determined by the location of the suspended ceiling guides. Each of said load-bearing sidewalls is equipped with at least one engagement means for detachable fastening into the suspended ceiling guide. On the front side of the cassette, each of the sidewalls is equipped with a protrusion made integral with the sidewalls and perpendicular to the sidewalls in the direction of the prism axis to form a stop for the sound-absorbing panel. The sound-absorbing panel is placed inside the frame with emphasis on the protrusions and is secured on the back side of the cassette with at least one lock. The clamp includes a clamp for fixing the position of the sound-absorbing panel and two flanges made perpendicular to the clamp. These two flanges are permanently connected to the corresponding sidewalls of the frame.

In this case, in one of the embodiments of the invention, the engagement means is a bulge, convexly facing the outside of the cassette.

The cassette in plan is a quadrangle, selected from the group including a trapezoid or a parallelogram.

BRIEF DESCRIPTION OF THE DRAWINGS

In fig. 1 shows a prototype of the claimed invention for illustrative purposes.

In fig. Figure 2 shows typical suspended ceiling guides.

In fig. 3 shows a cassette assembly in accordance with one of the embodiments of the claimed invention.

In fig. Figure 4 shows the cassette frame.

In fig. 5 shows the sound-absorbing panel of the cassette.

In fig. 6 shows the latch.

In fig. 7 shows diagrams of cassette options.

In fig. Figure 8 shows embodiments of the cassettes and their location in the suspended ceiling guides (view from the front surface of the cassettes).

DETAILED DESCRIPTION OF THE INVENTION

The cassette according to the present invention is intended for installation in known hidden suspended ceiling systems. In fig. Figure 2 shows typical guides of such systems: traverse 1 and stringers 2. Stringer 2 has a groove 3 into which part of the cassette is inserted using the means described below. Stringers are generally placed so that two adjacent stringers run parallel to each other along their entire length. The distance between such stringers is determined by the design of the room and the selected range of products from the manufacturer.

One variant of the assembled cassette is shown in Fig. 3. Cassette 4 of a modular suspended ceiling includes a frame 5, a sound-absorbing panel 10 and a clamp 11.

The cassette frame 5, as illustrated in FIG. 4, has essentially the shape of a straight quadrangular prism. The two sides of this prism are the load-bearing sides 6 of the frame and are located parallel to each other at a distance determined by the distance between the stringers. The remaining two sides of this prism are the non-load-bearing sidewalls 7 of the frame and are located at any angle less than the unfolded one. Thus, essentially the cassette in plan can have the form of a square, rectangle, rhombus, rectangular trapezoid, isosceles trapezoid, unequal trapezoid, parallelogram; in other words, a convex quadrilateral, two of the four sides of which are parallel to each other.

These four sidewalls form the side 16 sides of the cassette4.

On the side of the cassette 4 facing the room, that is, from the front 15 side of the cassette 4, each of the sidewalls 6, 7 of the frame is equipped with a protrusion 9 running perpendicular to the plane of the sidewall in the direction of the prism axis. The protrusions 9 are made integral with the sidewalls 6, 7 of the frame and have a width of no more than 5 mm and are intended only to hold the sound-absorbing panel 10.

Each of the supporting 6 sidewalls of the frame 5 is equipped with at least one engagement means 8, which is located closer to the rear side of the cassette. By means of the engagement means 8, the cassette is mechanically held in the stringer 2 of the suspended ceiling system. In this case, the engagement means 8 is designed in such a way as to ensure its removal from the groove 3 of the stringer 2, and, if necessary, reintroduce the said engagement means 8 into the groove 3 without deforming the cassette 4. The number of engagement means 8 is determined by the length of the corresponding load-bearing sidewall 6 of the frame; It is preferable that at least one of the load-bearing sidewalls 6 is equipped with at least two engagement means 8.

The engagement means 8 can be a bulb, the convexity of which is directed towards the axis of the prism. It is preferable that the length of the bulb is greater than its width, and also that the bulb is made parallel to the edge of the supporting sidewall 6, located closer to the rear side of the cassette. In this case, the bullet, at least on part of the length of the supporting sidewall 6, additionally serves as a stiffener and thereby increases the strength of the cassette. It is also preferable that the depth of the groove is no more than half the width of the groove 3 of the stringer 2, so that two cassettes can be snapped into one stringer 2 at the same time.

The cassette frame 5 is preferably made of galvanized steel using known metalworking methods, in particular stamping, bending, and cutting. The choice of material thickness is determined by the required strength characteristics of the product. For cassettes that are supposed to be dismantled frequently, that is, at least once a month, for the purpose of operating communications running in the ceiling space of a suspended ceiling system, it is preferable to use steel up to 1 mm thick. If there is no need to frequently remove the cassette, it is possible to manufacture the product from thinner steel. The frame is painted after metalworking. It is preferable that the frame is made by stamping in one step.

The sound absorption panel 10 of the cassette, as shown in FIG. 5 has essentially the shape of a straight quadrangular prism corresponding to the shape of the cassette frame. The sound-absorbing panel is made of mineral wool with the front surface finished from glued pre-painted or post-painted fiberglass, and the rear surface finished from unpainted fiberglass. To create a sense of solidity, the frame is painted in the same shade of color as the canvas on the front surface of the slab. The sound absorption coefficient of the specified mineral wool panel is at least 0.95.

The ratio of the height of the frame 5 and the height of the sound-absorbing panel 10 is chosen such that the supporting 6 sidewalls of the frame 5 exceed the thickness of the panel 10, and the engagement means 8 are located above the upper edge of the panel 10 to prevent deformation of the panel 10.

In fig. 6 shows a front view and a top view of the cassette clamp. The latch 11 is made essentially U-shaped and includes a clamp 12 and two flanges 13. Each of the flanges 13 is perpendicular to the plane of the clamp 12, and the flanges are located at an angle to each other, allowing the flanges to be attached to adjacent sides 6, 7 of the frame 5. Thus , one of the flanges 13 of the latch 11 is attached to the load-bearing 6 sidewall of the frame 5, and the other flange 13 of this latch 11 is attached to the non-load-bearing sidewall 7 of the frame 5 adjacent to the said load-bearing 6 sidewall of the frame 5. The sound-absorbing panel 10 placed in the design position inside the frame 5 is fixed by the clamp 12 of the latch 11 , which is permanently mounted by means of flanges 13 to the corresponding sidewalls of the frame, for example, by riveting, welding, using adhesives or any other known method. The use of lock 11 prevents panel 10 from moving or spontaneously falling out of frame 5. The second purpose of lock 11 is to impart additional strength to the entire structure, thereby significantly reducing the risk of deformation of the cassette during repeated installation and dismantling operations. The clamp 11, like the frame 5, is preferably made of galvanized steel. To further reduce metal consumption, it is desirable that the retainer and frame are made from a single piece while minimizing the required area of the steel sheet.

In fig. 7a and 7b show diagrams of cassette options: rectangular and trapezoidal.

In fig. Figure 8 shows embodiments of cassettes 4 and their location in the suspended ceiling guides (view from the front 15 side of the cassettes). The shape of the cassettes can be selected taking into account the geometry of the room in which the suspended ceiling is installed.

The cassette is mounted as follows: placing the load-bearing 6 sidewalls of the frame 5 parallel to the stringers 2 of the suspended ceiling system, press the cassette into the slot of the stringer 2 so that the engaging means 8 enter the cavity 3 of the stringer 2 until it clicks.

The cassette is dismantled by pulling off the non-load-bearing 7 sidewalls using any suitable tool, for example, a spatula. In this case, the force is applied closer to the corners of the frame 5, preferably symmetrically on both sides.

Due to the fact that the front surface of the cassette is essentially the entire surface of a sound-absorbing panel, and the sound-reflecting components are represented only by the protrusions 9 of the frame 5, a high level of sound absorption in the room is ensured, which significantly improves acoustic characteristics, such as speech intelligibility, absence of echo and general background noise. These characteristics greatly influence labor productivity, the quality of education and treatment and prevention processes.

Due to the fact that the sound-absorbing panel is permanently fixed in the cassette frame, deformation of both the panel and the entire product is prevented, which allows you to repeatedly mount and dismantle the same cassette as needed, for example, when servicing communications located in the ceiling space.

Due to the fact that covering the front surface of the cassette with a perforated metal sheet, as indicated in the closest analogue, is not required in the claimed invention, the amount of material required for the manufacture of the cassette is significantly reduced. In addition, the shape of the frame of the claimed cassette makes it possible to place clamp blanks within the framework blank.

The offered cassettes are suitable for use in well-known clip-in suspended ceiling systems equipped with 2 stringers.

Due to the fact that the cassette can be made in the shape of a parallelepiped or trapezoid, it is possible to use suspended ceiling cassettes in rooms of arbitrary shape.

List of symbols

1. Traverse

2. Stringer

3. Stringer groove

4. Cassette assembly

5. Frame

6. Load-bearing sides of the frame

7. Non-load-bearing sides of the frame

8. Engaging means

9. Ledge

10. Sound-absorbing panel

11. Lock

12. Clamp clamp

13. Retainer flange

14. Cassette sides

15. Front side of the cassette

16. Back of the cassette

Claims (10)

1. Modular suspended ceiling cassette having front, back and sides and including frame, sound-absorbing panel and at least one fastener, the frame includes two load-bearing and two non-load-bearing sidewalls, which together form the lateral sides of the cassette and are located essentially in the form of a straight quadrangular prism, in this case, the load-bearing sidewalls are parallel to each other and spaced apart at a distance determined by the location of the suspended ceiling stringers, each of said load-bearing sidewalls is equipped with at least one engagement means for detachable fastening into a suspended ceiling stringer, on the front side of the cassette, each of the sidewalls is equipped with a protrusion made integral with the sidewalls and perpendicular to the sidewalls in the direction of the prism axis to form a stop for the sound-absorbing panel, the sound-absorbing panel is placed inside the frame with emphasis on the protrusions and is secured on the back side of the cassette with at least one lock, The clamp includes a clamp for fixing the position of the sound-absorbing panel and two flanges made perpendicular to the clamp, these two flanges are permanently connected to the corresponding sidewalls of the frame. 2. The cassette according to claim 1, in which the engagement means is a pin. 3. The cassette according to claim 1, characterized in that in plan it is a quadrangle, selected from the group including a trapezoid or a parallelogram.