RU2815112C1 - Method of fixing soundproof curtain - Google Patents

Abstract

FIELD: protective devices.

SUBSTANCE: invention relates to protective devices for closing window, door and similar openings, in particular to acoustic building elements protecting public and residential premises from noise. Method of attachment of curtains containing cloth installed in window opening by means of at least three guides. Cloth is made of 100% polyester with a fire-retardant finish. Cloth is made of fabric with convex pattern of recessed squares—waffle cloth, where the square of the canvas is with edge of 0.6 mm, depth of 0.05 mm, fabric density of 425 g/m², and fixed by hooks on guides, the latter represent are rectangular cavities located in upper, lower and side parts of window opening and installed without gaps. Fastening of the opened sound-insulating cloth is carried out by means of a sticky tape on the side wall of the window opening.

EFFECT: reduced acoustic effect of traffic noise.

6 cl, 3 dwg

Description

Field of technology

The claimed technical solution relates to protective devices for closing window, door and similar openings, in particular to acoustic building elements that protect public and residential premises from noise.

State of the art

A roller blind is known (RU2049899, application 93051708/33, 11/09/1993, publ. 12/10/1995), including a fabric wound on a movable drum mounted on a stationary shaft, a torsion spring placed inside the drum, one end of which is connected to the movable drum, and the other with a fixed shaft, a locking device and a flexible element, where the locking device is made in the form of a spring-loaded finger installed in the housing with the possibility of interacting with the flexible element with a groove facing the movable drum, and a locking element in the form of a ball or cylindrical roller installed in a hole made in the housing with the ability to interact with a spring-loaded pin and drum grooves made on its outer surface.

The disadvantage of this design is the structural complexity of the constituent elements and the lack of noise protection properties.

A device for raising and lowering curtains is known (RU122427, application: 2012132371/12, 07/30/2012, publ. 11/27/2012), containing a housing installed inside it with the possibility of rotation on fixed axes, a drum having means for attaching the curtains to it, and a rotating mechanism located inside the drum with a return-spring working body, one end of which is connected to the drum, and the other to a fixed axis, where the rotating mechanism includes two symmetrically located return-spring working bodies, made in the form of rubber bands closed in rings, connected by one the ends with plugs-clamps placed inside the drum, and the fixed axes are made integral with the plugs installed at the ends of the body, while the ends of the axes are equipped with cutouts for attaching the other ends of the rubber bands of the rotating mechanism.

The disadvantage of this device for raising and lowering curtains is its use only for protection from solar radiation and mosquito protection, as well as the lack of noise protection properties due to sound absorption.

The closest technical solution to the stated technical solution for the device is a noise-proof curtain (SU575401, application: 2306218, 12/31/1975, publ. 10/05/1977) for protecting window openings, including a soundproofing panel moving along guides, and a drum for winding the curtains, fixed at the end of the panel and connected to the lifting rods, where, in order to ensure ventilation of the room, the guides and/or drum are made of hollow elements of a closed section, and longitudinal partitions are installed in the cavity of the guides and/or drum, while in the guides and/or drum holes are formed for the passage of air, and in the side walls of the guides there are longitudinal slots for the passage of the edges of the panel, while in order to increase the degree of noise suppression in the guides, the edges of the panel are equipped with a layer of sound-absorbing material.

The disadvantage of this noise-proof curtain design is its complex design and the use of sound-absorbing material only in the form of an additional layer.

The closest technical solution to the claimed technical solution for the method is a roller blind (RU91366, application: 2009129929/22 dated 08/05/2009, published on 02/10/2010), containing a rectangular-shaped canvas connected to a roll-up drive mounted in a housing in the form a horizontally oriented elongated box with the possibility of rotation and to which is attached the edge of the specified web, brought out through a longitudinal slot in the body, as well as a drive for folding the canvas, having a cord closed in a ring, where the drive for folding the canvas is made in the form of a pulley located in the body, covered by a closed a ring with a cord with elements of engagement with the pulley and through a coupling connected to the end of the shaft for winding the fabric onto the shaft when pulling the cord branches brought out from the body outside through the pulley, and the ends of the body are adjacent to vertically oriented L-shaped guides, under which the side edges of the fabric are inserted, the bottom the edge of which is connected to a horizontally oriented strip, the ends of which are also placed under vertically oriented guides.

The disadvantage of the above curtain is the lack of sound insulation, since structurally this curtain does not have noise-proofing properties, in addition, the vertically oriented L-shaped guides can create an obstacle to the full folding opening of the doorway.

The objective of the proposed technical solution for the device is to develop a soundproofing curtain that reduces the acoustic impact of various noise flows.

The objective of the proposed technical solution for the method is to develop a fastening for a soundproofing curtain that eliminates the obstacle when the opening sash is fully tilted.

DISCLOSURE OF THE ESSENCE OF THE TECHNICAL SOLUTION

The solution to the above problem is to develop a soundproofing curtain containing a fabric installed in the opening using guides, where a 100% polyester fabric with a fire-retardant finish is used, while the fabric itself is made of fabric with a characteristic convex pattern of recessed squares - waffle fabric. The specified technical solution reduces the acoustic impact created by traffic flows.

A technical solution is possible, where the square of the fabric is made with an edge of 0.6 mm, a depth of 0.05 mm, and a fabric density of 425 g/ ^m2 . The specified technical solution provides an index of sound insulation of airborne noise from traffic flow.

A technical solution is possible where the number of guides varies from 3 to 6 and depends on the size of the opening. The specified technical solution ensures a tight fit of the soundproofing curtain.

A possible technical solution is where the opening is a window or door. The specified technical solution ensures a reduction in the noise level generated by transport.

The solution to the above problem is to develop a method for attaching curtains to a window opening and is carried out through the use of at least three guides, where the latter are located at least at a distance S from the window frame, while the distance S is determined by the product of the height h of the window sash and the tangent of the opening angle α doors The specified technical solution ensures a tight fit of the soundproofing curtain.

A technical solution is possible where the distance S is in the range from 100 to 350 mm, but at a distance of no more than 500 mm.

A technical solution is possible where the height h of the sash is in the window opening height range from 500 to 2100 mm.

A possible technical solution is where the opening angle α of the sash is in the range from 15 to 45 degrees. The specified technical solutions ensure a tight fit of the soundproof curtain.

SHORT LIST OF DRAWINGS

It should be noted that the attached FIGS. 1-3 show the most preferred embodiment of the technical solution and cannot be considered as a limitation on the content of the technical solution, which includes other embodiments.

In fig. Figure 1 shows the inventive soundproofing curtain, which consists of a soundproofing fabric 1, one edge of the fabric is additionally stitched with a Velcro strip fixed in the side wall, a guide 2 moving along the guides 3 and 4, which are located in the upper and lower parts of the opening, up to the Velcro strip 5, which is equipped on the opposite side of the opening. Guides 2, 3, 4 are rectangular cavities located in the upper, lower and side parts of the opening 6 and installed without gaps.

In fig. 2 - shows the installation of guides 3 and 4 in the window opening, which are mounted in the window opening, without recesses and at a distance S necessary for opening the sash.

In fig. 3 - shows a guide 3, in which there is a single-row cornice 7, fastening hooks 8 with a soundproofing curtain.

Pos. 1 - fabric made of 100% polyester, with a fire-retardant finish and is a fabric with waffle weave, edge 0.6 mm, depth 0.05 mm, fabric density 425 g/m ² .

Pos. 2 - guide, which is a rectangular cavity fixed in the side wall of the window opening. A single-row profile aluminum cornice is attached to this cavity, and hooks are attached to the cornice. The cavity ends below the beginning of the soundproofing curtain, in order to avoid reducing the soundproofing properties.

Pos. 3 - guide, which is a rectangular cavity fixed in the upper part of the opening. A single-row profile aluminum cornice is attached to this cavity, and hooks are attached to the cornice. The cavity ends below the beginning of the soundproofing curtain, in order to avoid reducing the soundproofing properties.

Pos. 4 - guide, which is a rectangular cavity fixed in the lower part of the opening. A single-row profile aluminum cornice is attached to this cavity, and hooks are attached to the cornice. The cavity ends below the beginning of the soundproofing curtain, in order to avoid reducing the soundproofing properties.

Pos. 5 - adhesive tape for curtains, which is an adhesive-based tape. This tape is attached to the side wall of the opening, which must first be cleaned and degreased.

Pos. 6 - opening, mainly window.

IMPLEMENTATION OF THE SOLUTION

In the technical solution, the terms used mean the following concepts:

The sash is a movable window element assembled from a PVC profile and made in the form of a window frame with a double-glazed window installed. The element is attached to fittings, which provide the necessary functionality - opening, closing, turning, etc.;

distance S is the distance from the installed window frame to the point of maximum tilting of the window sash, while the distance S itself is in the range from 100 to 350 mm, but at a distance of no more than 520 mm;

the height h of the sash is the distance between the height of the window opening along the frame, while the height of the sash is in the window opening height range from 500 to 2100 mm;

sash opening angle (α) is the angle at which the window sash will open from the closed position. The opening angle range of the sash is between 15 and 45 degrees, since the opening angle is limited by the weight of the window sash, i.e. the larger the window, the heavier it is and, accordingly, the smaller the opening angle, while the fittings (fastening elements) may not withstand the weight, and the sash will simply fall out of the window, therefore, according to the standards, the opening angle is usually no more than 45 degrees;

guide - a technical part that ensures the movement of the curtain along the window and acts as a reliable clamp for the curtain on the windows;

cavity - an empty space inside a window opening where the guide is located.

There is a known waffle fabric that is produced with a characteristic convex pattern of recessed squares. The cells come in different calibers from 2 to 10 mm. Towels are made from small soft wafers, large bathrobes are used, and household and technical napkins are made from medium-sized ones.

In the claimed technical, shown in Fig. 1-3, the specified waffle fabric 1 is used, installed using guides 2-4, which are located in the cornice 7 and mounted in the window opening 6, secured with adhesive tape 5, using hooks 8.

At the same time, the technical result for the device was achieved experimentally, where 6 prototypes (PE - polyester) were tested in a sound-measuring reverberation chamber:

- fabric curtain No. 1 surface density 379 g/ ^m2 (100% PE without finishing),

- fabric fire-retardant curtain No. 1 surface density 429 g/ ^m2 (100% PE, fire-retardant finish),

- fabric curtain No. 2 (waffle) surface density 329 g/ ^m2 (100% PE, fire-retardant finish),

- fabric curtain No. 2 (waffle) surface density 359 g/ ^m2 (100% PE, fire retardant finish),

- fabric curtain No. 2 (waffle) surface density 369 g/ ^m2 (100% PE, fire-retardant finish),

- fabric curtain No. 2 (waffle) surface density 425 g/ ^m2 (100% PE, fire-retardant finish).

The purpose of the study was to determine the values of sound insulation R, sound insulation index R _W of airborne noise, spectral adaptation members: A-corrected pink noise CA and A-corrected noise of urban traffic flow STr of a window block.

Of all the prototypes, fabric curtain No. 2 (waffle) with a surface density of 425 g/ ^m2 (100% PE, fire-retardant finish) showed the best results, providing the stated technical result, namely: reducing the acoustic impact of various noise flows, including and transport.

Tests were carried out in accordance with GOST R ISO 10140-1-2012 Acoustics. Laboratory measurements of sound insulation of building elements. Part 1. Rules for testing building products of a certain type. As a result of the experiment, the sound insulation index of airborne noise from traffic flow RW=5 dBA was achieved.

The technical result of the method is achieved experimentally, where the structure, using at least three guides, is located at least at a distance S equal to the product of the height h of the sash and the tangent of the opening angle α of the sash. This formula was obtained through experimental studies, including those in accordance with GOST 23166-2021, GOST 30777-2012.

The width of a plastic window sill ranges from 10 cm to 1 m, in increments of 5 cm, but usually the width of window sills is from 100 mm to 600 mm. Therefore, the distance S is taken in the range from 100 to 520 (max), since it is necessary to leave space for installing the curtain.

In accordance with GOST 30777-2012, a standard tilt-and-turn window measuring 1100x1200 is taken for testing; the sash opening angle α depends on the size of the fastening elements and ranges from 15 to 45 degrees.

Window (dimensions), mm Sash height h, mm Tangent of the angle α of opening the sash Opening angle
α, deg Distance S, mm 1100x1200 1100 0.268 15 295 1100x1200 1100 0.364 20 400 1100x1200 1100 0.466 25 513 570x570 500 0.268 15 134 570x570 500 0.364 20 182 570x570 500 0.466 25 233 570x570 500 0.577 thirty 289 570x570 500 0.700 35 350 570x570 500 0.839 40 420 570x570 500 1 45 500 1320x970 1250 0.268 15 335 1320x970 1250 0.364 20 455

Using the stated technical ratio, you can calculate absolutely any window, the main thing is to know the height of the sash and the opening angle.

The claimed technical solution works as follows: a soundproofing curtain in the form of the claimed fabric 1 is attached to all guides 2,3,4 located in the cavity of the window opening. Fastening is carried out using hooks.

The mechanism for opening the curtains involves movement along two guides of a soundproofing sheet secured with hooks on the guides.

The opened soundproofing sheet 1 is secured using adhesive tape 5 on the side wall of the window opening 6.

The declared technical solution is reliable in operation, simple and technologically advanced in manufacturing and assembly, has a high soundproofing effect, and also ensures unhindered opening of the window.

Claims (6)

1. A method of attaching a curtain containing a canvas installed in a window opening using at least three guides, characterized in that the curtain is made of soundproofing fabric made of 100% polyester with a fire-retardant finish, while the soundproofing fabric is made of fabric with a convex pattern of recessed squares - waffle fabric, where the square of the soundproofing fabric is made with an edge of 0.6 mm, a depth of 0.05 mm, fabric density 425 g/ ^m2 , which is secured with hooks on the guides, the latter are rectangular cavities located in the upper, lower and on the side parts of the window opening, which are installed without gaps, while the soundproofing sheet is opened and secured with adhesive tape on the side wall of the window opening. 2. The method according to claim 1, characterized in that the guides are located at least at a distance S from the window frame, while the distance S is determined by the product of the height h of the window sash and the tangent of the opening angle α of the sash. 3. The method according to claim 2, characterized in that the distance S is in the range from 100 to 350 mm, but at a distance of no more than 500 mm. 4. The method according to claim 2, characterized in that the height h of the sash is in the window opening height range from 500 to 2100 mm. 5. The method according to claim 2, characterized in that the opening angle α of the sash is in the range from 15 to 45 degrees. 6. The method according to claim 1, characterized in that the number of guides varies from 3 to 6 and depends on the size of the window opening.