RU215071U1 - FABRIC SEAL - Google Patents

Abstract

The utility model relates to the field of construction, namely to the structural elements of windows and doors related to feigned seals. It can be used as a window or door seal used for long-term sealing in the dynamic work of opening and closing the window or door structure. The technical result of the utility model is a soft pressure and a better recovery of the seal during working deformations. This technical result is achieved due to the fact that a feigned seal is claimed, made in the form of a hollow profile made of an elastic material having a closed cross-sectional profile with a base, at the junction of the walls of which a feigned part in the form of a petal made of an elastic material is fixed, characterized in that in the base with an adhesive layer is applied on the outer side, the petal is made with a double bend in the form of a C-shaped profile, the base on the side of the bent end of the petal has a ledge that goes beyond the boundaries of the walls of the closed profile, and the edge of the end of the petal is made with the possibility of abutting against the base ledge when pressure is applied to it .

Description

The utility model relates to the field of construction, namely to the structural elements of windows and doors related to feigned seals. It can be used as a seal for a window or door, used for long-term sealing in the dynamic work of opening and closing a window or door structure.

The constructions of adhesive seals known in the art for window and door blocks are a closed profile and consist of an elastic part made of thermoplastic elastomer or rubber, and also contain an adhesive layer in the form of an adhesive tape or applied glue (see the example "Sealant with / to windows and doors D2" at https://www.ancomi27.ru/goods/40416505-uplotnitel_s_k_dlya_okon_i_dverey_d2). The upper part of the elastic seal performs the functions of sealing the structure in the porch.

The currently known designs are prone to permanent deformations and permanent distortion and compression of the seal after a long closing of the door. The seal designs currently in use also do not recover well after compression.

From similar technical solutions according to patents EP 0644313 A (publ.: 1995-03-22), JP S57151193 U (publ.: 1982-09-22), US 3763595 A (publ.: 1973-10-09) seals are known, also having a closed, but more elastic profile contour.

This leads to the need to apply sufficient force to close the structure and to the fact that when slamming freely, the door or window “kicks off”, bounces off.

Also, with the design of a closed feigned contour, when pressed, the walls of the contour are deformed, which means that the accumulation of residual compression and a change in the appearance of the seal, its compression, curvature, and shrinkage. In the case of a feigned petal, the shape of the petal itself does not change, since it is not the petal that is deformed, but the place where it adjoins the base, which, due to the design, is not visible when installed on the door. The result of a long vestibule may be residual deformations, expressed not in the distortion of the shape of the petal, but only in its lowering closer to the chamber, while the appearance of the seal remains original, without distortion and deformation.

A known profile of a seal for a moving glass window of a car door (RU 36646U, published: 03/20/2004), containing the outer and inner side walls associated with the central base and forming a guide groove with it, and the end sections of the central base are made protruding beyond the outer and inner side walls provided with sealing tabs made in the area of the guide groove and with the possibility of adhering to the glass, the inner side wall is provided with a protruding element forming a groove with it for accommodating the inner flange of the door window frame, and the outer side wall is provided with a protruding element forming a groove with it to accommodate the outer flange of the door window frame, characterized in that the seal profile is made of thermoplastic elastomer.

In the well-known analogue as a vestibule, as the petal is compressed and deformed in the vestibule, the elasticity of the petal increases evenly in proportion to the magnitude of its deformation (pressing).

Since large deformations lead to high residual compressions, this design of the porch in the form of abutting petal is not resistant to increased deformations and does not exclude increased residual compressions of the seal.

The well-known seal is held on the door due to the shape of the structure and is suitable only for this type of door, not applicable in windows and doors of buildings.

In addition, the used sealing tab does not come into contact with the main body of the seal, in contrast to the claimed utility model, but serves to contact the lifting glass. That is, it has a different function.

A profile of a seal for a moving glass of a car door (RU 43504U, published: 01/27/2005) is known, containing a main body made of a C-shape with the possibility of covering the flange of the window opening of the door and formed by the central and upper walls interconnected by a jumper, and the end section the central wall is made in the form of a bend, sealing the petal, made in the upper zone of the main body with the possibility of adhering to the glass, characterized in that the sealant profile is additionally provided with protruding elements located inside the main body and forming with its upper wall a cavity facing the open zone to the side location of the central wall of the main body.

The prototype is held on the door due to the shape of the structure and is suitable only for this type of door, not applicable in windows and doors of buildings.

In addition, the used sealing tab does not come into contact with the main body of the seal, in contrast to the claimed utility model, but serves to contact the lifting glass. That is, it has a different function.

Known ELASTIC PROFILE SEAL FOR WINDOWS, DOORS OR OTHER SIMILAR STRUCTURES (patent RU 2347056, published: 20.02.2009). The elastic profile seal has an upper and lower part made in the form of a hollow profile. The lower part is made with at least one fastening rib. To cover the landing groove, a closing rib is provided. The upper part has a sealing section and a support section adjacent to it, located at an obtuse angle to each other. The sealing section at its one end is connected to the rear wall by a connecting section, which on its outer side has a V-shaped recess, the side surfaces of which are inclined at an obtuse angle to each other. The connecting section is made in that part of it, which extends from the bottom of the V-shaped recess towards the rear wall, with a continuously increasing thickness. The support section adjoins directly to the rear wall or to a transverse section extending from it, which, with its end far from the rear wall, is connected to the support section or to the end of the closing rib facing the rear wall. The junction of the support section to the rear wall, respectively, to the transverse section is located above the closing rib with an indent from it. The support section adjoins the sealing section to form an articulation with it.

According to the analogue, the device prevents undesirable "rolling into a tube" of its upper part, especially when used to seal windows, doors or similar structures with shutters flush with the frame, and provides better pressing of the sealing surface of the sealing area to the opposite sealing surface when they interact between yourself.

The sealing section in the place of its contact with the supporting one has a continuation in the form of a protrusion, which serves as a stop lever. But in contrast to the claimed utility model, although this ledge interacts with the main body of the seal, it does not form any air chamber at all, which would provide an effective shock-absorbing effect.

In addition, during operation, this protrusion gradually wears out or is pressed against the main body of the seal.

The closest analogue is an elastic profile seal (RU 124721U, published: 02/10/2013), made in the form of a hollow profile, consisting of the upper and lower parts connected to each other through the support platform and offset relative to the vertical axis, the lower part of the hollow profile is made in in the form of a fastening fungus, and the section of the upper part of the hollow profile is made closed with a freely protruding curved sponge, characterized in that the section line of the closed hollow profile forms a polygon, the base of which is formed by the shelf of the support platform, one wall of the closed hollow profile is made convex and provided with a protrusion, and the second the wall of the closed hollow profile is located in the middle part and is made in the form of a knee, the top of the polygon is formed by a protruding curved sponge and the walls of the closed hollow profile.

The technical problem of the prototype is that the protruding curved sponge is supported by a wall made in the form of a knee and, accordingly, there is an additional bending of the protruding curved sponge towards the pressing end of the window sash. As a result, there is a tight abutment of the protrusion to the end face of the window sash. The tight adjoining of the protruding curved sponge to the end face of the window sash leads to the formation of a cavity.

However, this cavity is formed between the body of the seal and the end face of the window sash. The protruding sponge itself does not effectively participate in the damping process of the seal, since when interacting with the end face of the window sash, pressure occurs on it in such a way that it deviates to the side and the resulting cavity is very small to create the desired effect. In addition, the formed cavity is not hermetic, since it is formed by the end face of the window sash, and not by the elastic body of the seal itself. Thus, air pressure does not arise inside the cavity, and as the sponge is used, it bends, and an air cavity is not formed at all.

As a result, soft pressure and good recovery of the seal for a given range of working deformations in the prototype is not provided.

The objective of the utility model is to eliminate all the above-described technical problems and disadvantages inherent in the known solutions.

The technical result of the utility model is a soft pressure and a better recovery of the seal during working deformations.

This technical result is achieved due to the fact that a feigned seal is claimed, made in the form of a hollow profile made of an elastic material having a closed cross-sectional profile with a base, at the junction of the walls of which a feigned part in the form of a petal made of an elastic material is fixed, characterized in that in the base with an adhesive layer is applied on the outer side, the petal is made with a double bend in the form of a C-shaped profile, the base on the side of the bent end of the petal has a ledge that goes beyond the boundaries of the walls of the closed profile, and the edge of the end of the petal is made with the possibility of abutting against the base ledge when pressure is applied to it .

The base of the seal can be made of the same material as the body and tab of the seal, or from another elastic material with increased adhesion to self-adhesive tape or glue.

Preferably, the inner shape of the tab near its end follows the shape of the upper part of the closed seal chamber in that part of it that has direct contact with the tab in the position where the tab rests against the ledge when pressure is applied to it.

Preferably, the profile of the seal, together with the tab, is in the form of FIG.

Brief description of the drawings

Figure 1 shows the seal device (sectional profile view).

Figure 2 shows an example of the possible manufacture of two seals with a jumper at once (sectional view of the profile).

Figure 3 shows the device of the seal with the selection of the contact parts (sectional view of the profile).

Figure 4 shows the seal in operation when the petal is compressed (sectional profile view).

In the drawings: 1 - petal, 2 - base, 3 - adhesive layer, 4 - ledge of the base, 5 - end of the petal, 6 - wall of the upper part of the closed chamber of the seal in that part that has direct contact with the petal in the position when the petal abuts against the ledge when pressure is exerted on it, 7 - air chamber, 8 - jumper, 9 - contact area of the petal with the seal body, 10 - contact area of the seal body with the petal, 11 - formed additional air chamber.

Implementation of the utility model

The feign seal is made in the form of a hollow profile made of an elastic material having a closed sectional profile with a base. At the junction of its walls, a feigned part is fixed in the form of a petal made of elastic material.

What is new is that (see Fig.1) at the base on the outside there is an adhesive layer 3, the petal 1 is made with a double bend in the form of a C-shaped profile, the base 2 from the side of the curved end of the petal has a ledge 4 extending beyond the boundaries of the walls closed profile, and the edge of the end of the petal 5 is made with the possibility of abutting against the ledge 4 of the base 2 when pressure is applied to it.

Preferably, the inner shape of the petal near its end 5 follows the shape 6 of the upper part of the closed seal chamber in that part of it that has direct contact with the petal in the position where the petal abuts against the ledge 4 when pressure is applied to it (see Fig.2). This repetition of shapes 5 and 6 ensures that the contact surfaces 9 and 10 (see FIG. 3) interact better in the case of severe deformation.

Preferably, the profile of the seal, together with the tab, is in the form of FIG. This option best reflects all the above advantages of the utility model.

The presence of a soft petal 1 allows you to recover better. In case of excessive compression of the seal, petal 1 due to a special shape according to the claimed utility model closes and resting against the ledge 4 of the base 2 gives additional rigidity and resistance to further deformation of the entire seal. Thus, it is precisely a given design that can be provided with a soft pressure and a good recovery of the seal in a given range of operating deformations. With increased deformations, additional increased elasticity of the seal is provided due to the additional air chamber 11 formed by the petal 1 (see Fig.4).

Unlike the seals used today for doors and windows, primarily steel doors, the design of the seal of the claimed utility model has the form of a horizontal air chamber 7 and a lobe 1 dynamically working on the porch. An adhesive layer 3 is applied to the base 2 of the seal during production, which may be a self-adhesive double-sided tape or simply applied adhesive layer.

Adhesive layer 3 can be applied to the surface of the substrate with a thin layer immediately before the installation of the seal in the structure, or it is possible to use an acrylic or rubber double-sided adhesive tape applied during the manufacture of the seal.

The seal can be made of thermoplastic elastomers or rubbers, both in a monolithic design, and in fully or partially foamed, as well as from one or more elastic materials.

For example, the base of the seal 2 can be made from the same material as the body and tab 1 of the seal, or from another elastic material with increased adhesion to sticky self-adhesive tape or glue.

The soft petal 1 and the main air chamber 7 perform the function of sealing the porch of the structure. The base 2 is used to fix the seal to the supporting surface with the help of the adhesive layer 3.

The design can be either single or adjacent, that is, during production, two seals can be made at once (see the example in Fig. 4), connected by a thin jumper 8. Before installation, the seals are easily separated, by breaking the jumper 8, thereby tearing off each from friend.

The shape of the seal according to the claimed utility model allows you to save the appearance of the seal after prolonged compression and reliable sealing of the porch.

The sham part of the seal is made in the form of a petal 1 made of an elastic polymeric material of thermoplastic elastomer or monolithic rubber, or low-density foam rubber, which performs the function of sealing a window or door when the window sash or door leaf is pressed against the window frame or door frame (see Fig. 4) .

Petal 1 is preferably made with a hardness of from 5 Shore A to 80 Shore A, most optimally from 15 to 60 Shore A.

The choice of the hardness level of petal 1 depends on how soft the pressure is to be provided in a wide range of gaps in the front part of the window or door structure, as well as on the shape of the end face of the window or door itself.

The C-shaped shape of the petal can be provided with a trapezoidal or semicircular shape of the inner part of the petal 9 (see the example in Fig.3), which repeats the shape of the upper part 10 of the closed seal chamber in that part that touches the end of the petal in the working position when pressed on petal (see Fig.3).

The ledge in the base 2 is important so that in the compressed state of the seal, the free end of the petal 1 falls and slides along the end of the lower chamber 7 until it stops against the ledge of the base (see Fig.3).

When closing the structure (window or door), petal 1 creates an additional closed air chamber 11 (see Fig.4) to increase the overall thermal resistance of the sealed gap. The upper part of the chamber 10 at the junction with the petal 1 also performs the function of additional support for the petal.

With further deformation of the seal, petal 1 is pressed more or even close to the lower chamber 7, repeating its contour (that is, sections 9 and 10 are closed). Thus, the main load of deformation is carried by the additional air chamber 11, which is formed due to the contact of the end 5 of the petal 1 with the body of the wall 6 of the seal and due to the abutment against the ledge 4 of the base 2.

The utility model was tested on prototypes manufactured according to the claimed solution.

Testing was carried out using research testing equipment, where

sample 1 - test sample of TPE LCS Material of shape (construction) according to utility model 4;

D-shaped control samples: 2 - foamed EPDM rubber, 3 - TPE based on SEBS.

As part of the tests carried out, the following were determined: resistance of sealants to shrinkage at high temperature levels; resistance of sealants to frost; resistance of the seal to fixed compression.

To select these tests, the following tests were used: GOST 31362-2007 and GOST 30778-2001.

Testing for resistance to shrinkage of seals at high temperatures was carried out during the day at a temperature of 100°C.

In accordance with clause 4.2.8 of GOST 30778-2001, seals that have been exposed to thermal energy cannot be changed in linear dimensions by more than 3% (this requirement is defined as common for EPDM and TPE).

The results of testing window seals for resistance to elevated temperatures are shown in Table 1.

Table 1.

sealant Length up to, mm Length after, mm Shrinkage after 24 hours at 100°C, % Sample #1 1000 995 0.5 Sample #2 1000 994 0.4 Sample #3 1000 992 0.7

The table shows the compliance of all four submitted samples with a predetermined requirement for shrinkage not exceeding 3%.

Testing to determine the level of frost resistance of the sealant was carried out in accordance with GOST 31362-2007. This study showed how the seal retains its own elastic characteristics at low temperatures.

The evaluation had a criterion limit of -40° C. with bar bending R=0 mm.

The results of testing seals for frost resistance are shown in table 2.

Table 2.

Temperature, °С Sample #1 Sample #2 Sample #3 -40 passed passed passed

Testing to determine the resistance of seals to compression was carried out in accordance with GOST 31362-2007. A characteristic of the resistance of seals to cyclic and fixed compression is the ability of seals to withstand without deformation a compression test in a cyclic or fixed form, which simulates the loads of operation.

This test is a simulation of the maximum loads, pressure and compression on the seal, fixed in the window groove with the sash closed. The test was carried out using a clamp, in which the seals are clamped, and an oven designed to hold the seal for three days in a 20% compressed state at a temperature of 70°C.

The compression test results are shown in Table 3.

Table 3

sealant Height up to, mm (H ₀ ) Clamp height 25% (H ₂ ) Height after restoration, mm (H ₁ ) Relative residual compression, % Sample #1 10.02 7.50 9.73 11.6 Sample #2 10.15 7.50 9.51 25.6 Sample #3 9.90 7.50 8.72 47.2

Formula for calculation

∆,% \u003d 100% ⋅ (H ₀ -H ₁ ) / (H ₀ -H ₂ )

The test result showed, in accordance with the values of the relative residual deformation, when deformed in a static form, all installed samples comply with clause 4.3.1 of GOST 30778-2001, but the sample according to the utility model had better recoverability.

In the course of practical tests, soft pressure and good recovery of the seal were tested for a given range of working deformations.

During cyclic testing of the seal Sample No. 1 at n.o. the results showed that it withstands 10,000 window opening / closing cycles and 10,000 door opening / closing cycles without deformation of the petal and the body of the seal itself. At the end of testing, the soft pressing of the window sash and door was maintained, the shape of the seal remained unchanged.

With regard to control samples No. 2, 3, it was noted that after continuous 10,000 opening / closing of the window and 10,000 opening / closing of the door, the shape of the seals was distorted, the height of the seals decreased, Sample No. 3 more significantly.

Based on the results of the research, it can be concluded that the seal according to the claimed utility model (sample No. 1) provides a softer pressure and better recovery of the seal during working deformations.

Claims (3)

1. A mock seal made in the form of a hollow profile made of an elastic material having a closed cross-sectional profile with a base, at the junction of the walls of which a mock part is fixed in the form of a petal made of an elastic material, characterized in that an adhesive layer is applied on the outside of the base, the petal is made with a double bend in the form of a C-shaped profile, the base on the side of the bent end of the petal has a ledge extending beyond the boundaries of the walls of the closed profile, and the edge of the end of the petal is made with the possibility of abutting against the base ledge when pressure is applied to it. 2. The device according to claim 1, characterized in that the base of the seal is made of the same material as the body and petal of the seal or from another elastic material with increased adhesion to self-adhesive tape or glue. 3. The device according to claim 1, characterized in that the inner shape of the petal near its end repeats the shape of the upper part of the closed chamber of the seal in that part of it that has direct contact with the petal in the position where the petal rests against the ledge when pressure is applied to it.

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