RU127115U1 - PROFILE FORMING IMPOST - Google Patents

Abstract

1. The profile forming the impost is made of polyvinyl chloride and has a T-shaped section with the main part and a shelf protruding from both sides, the main part is made with a central cavity mating through the inner partition with the central end located on the end opposite the end with the shelf, a small cavity, on the other hand, the central cavity through the internal partition mates with the cavities of the shelf, made with four cavities sequentially located across the width of the shelf, separated by partitions, the first the partition is located along the symmetry axis of the section between the outer wall of the shelf and the partition with the Central cavity, and the second and third partitions are symmetrically and each of them lies between the wall of the profile, forming the outer surface of the shelf profile from the outside, and the walls forming the outer surfaces of the shelf inside angles between the sides of the shelf and the main part, while the second and third partitions are located at the same angles to the walls adjoining to it, the value of which lies in the range of 5-30 °, and the thickness external walls is in the range of 2.5-2.8 mm. 2. A profile according to claim 1, characterized in that the thickness of the internal partitions is less than the thickness of the outer walls of the profile. A profile according to claims 1 and 2, characterized in that the thickness of the outer wall of the profile forming the impost is in the range of 2.5-2.8 mm with a weight of the glass unit, respectively, in the range from 30 to 50 kg. 4. The profile according to claims 1 and 2, characterized in that the ratio of the thickness of the outer wall of the profile to the thickness of its inner wall is in the range from 1.075 with a weight in a glass unit of 30 kg or less to 1.25 with a weight of a glass unit �

Description

The utility model relates to construction, and specifically to the profile forming an impost in the manufacture of window and door blocks, display cases, dividing walls and other glazing systems, which is made of polyvinyl chloride.

Polyvinyl chloride (PVC) is a polymeric material (plastic) with high fire-fighting qualities: it is difficult to ignite and does not support the combustion process in the absence of a fire source, it emits less heat when burning than wood. It consists of natural components such as rock salt, lime, water and oil (coal), and various additives to improve the appearance, stability of the composition, increase resistance to ultraviolet radiation, temperature fluctuations.

PVC profile is produced by continuous extrusion. The PVC profile, inside is hollow, has several chambers, the number of which, depending on the climatic zone and the purpose of the building, usually varies from two to six.

Impost is a plastic profile with several cameras, inside of which there is a reinforcing profile.

Impost is designed to connect two or more wings in a single window design. In this case, each of the wings can open independently of each other. Impost also has a second purpose: it can be used to connect two double-glazed windows or sandwiches in the design of a sash or frame.

The weight of the opening shutters of a plastic window reaches 30-70 kg, in connection with which the PVC profile is reinforced with a metal profile, made, as a rule, in the form of a rectangular pipe of a closed or open U-shaped profile. The reinforcing profile is usually made of galvanized steel, less often - from aluminum, from metal - usually from galvanized steel, less often - from aluminum. It is the reinforcing profile that has the greatest influence on the weight of the PVC profile. In addition to the extra weight, the metal also contributes to the freezing of the structure, which reduces the insulating performance of the glass. Along with galvanized steel and aluminum, they are beginning to use specially developed plastic, the rigidity of which is not inferior to metal, in particular, it is plastic jointly developed by Aluplast and BASF.

Depending on the wall thickness, the profiles are divided into three classes: A, B, C. The assignment of a profile to one of these classes depending on the thickness of the outer wall is determined in accordance with Interstate standard GOST 30673-99 “PVC profiles for window and door blocks” ( Table 1). The thickness of the inner walls of the profiles, its ratio with the thickness of the outer walls of GOST 30673-99, is not standardized.

Table 1. Outer wall Thickness of external walls, mm, not less than for classes BUT AT FROM Facial 3.0 2,5 Not standardized Non-facial 2,5 2.0 Also

Wall thickness is one of the indirect characteristics of shape stability and strength profiles.

The mounting width (depth) is one of the indicators that affect the heat-insulating characteristics of the profile - the wider the plastic profile, the warmer it is. Typically, the mounting depth of 3-chamber profile systems is about 60 mm, 4-chamber about 70 mm, 5-chamber about 80 mm.

The profile system is also characterized by the width of the possible filling. The higher this indicator, the more options for double-glazed windows that can be installed in this profile system.

A known set of profiles made of polyvinyl chloride with different configurations of sections (RU C1 No. 2250336, publ. 04/20/2005, MKI 7 EV 3/22,). These profiles are designed to form window or door frames and other glazing systems; they differ in their purpose and size.

A common feature of the profiles is the presence of several cavities separated by partitions. During assembly, metal reinforcement is introduced into the main cavity of the profiles to give rigidity to the assembled structure. The cavity cavities located on the side of the outer, visible surfaces, when assembling the frame structure remain empty.

The system includes at least one profile forming a window frame, at least one profile forming a sash, and at least one profile forming an impost of a T-shaped cross section formed by a shelf and a stand, separated by partitions into chambers, one of which it is designed to accommodate the reinforcing profile and is equipped with protrusions facing the inside of the chamber, the impost shelf is divided by partitions parallel to the longitudinal axis of the rack into the central and side chambers, and the central chamber is limited from the side racks the first partition located parallel to the rear wall of the shelf and offset relative to its inner surface along the longitudinal axis to the rack chamber by a distance greater than the thickness of the partition, and in each of the profiles in which the block is glazed, grooves are made to accommodate the seal on the outside of the glazing and glazing beads with a seal on the inside of the glazing. The central chamber of the impost shelf is provided with at least one additional partition located inside the chamber in the plane of the rear wall of the shelf with the formation of at least one additional volume of the chamber, the first partition is offset from the rear wall of the shelf by a distance exceeding the thickness of the outer walls of the profile, and the glazing bead seal is made in the form of a removable sealing gasket installed in the groove formed in the side surface of the glazing bead facing the profile glazing, and the working part the relative gasket is made in cross section in the form of two teeth facing the vertices of the glazing surface, the tooth forming the outer side of the seal is located at an angle of at least 45 ° to the axis of the gasket, and the tips of the teeth are equipped with pads designed to abut the glazing surface.

The invention according to patent No. 2250336 solves the problem of improving the operational characteristics of window and / or door blocks by reducing heat loss through various structural elements, ensuring their durability and reliability, improving manufacturability and productivity of assembly and installation of blocks.

Moreover, to increase the strength of the window or door block structure, the system additionally includes at least one profile forming a door leaf of a T-shaped cross section formed by a shelf and a stand, divided by partitions into chambers, the lower side wall of the rack chamber designed to accommodate the reinforcing profile , made in the form of a solid partition, and a hardware groove is located under it with the formation of a separate chamber.

To increase the strength of the connection of the window or door block structure with auxiliary and additional profiles of the window or doorway, the thickness of the legs of the mounting projections of the profile forming the window or door frame is made not less than the thickness of the outer walls of the profiles.

The outer walls of the profiles are made with a thickness of at least 3 mm, and the thickness of the partitions in the chambers of the profiles is from 1.3 to 1.6 mm. Those. the product according to GOST 30673-99 belongs to class A. Issues of the thickness of the external and internal walls depending on any other parameters of the double-glazed window, the description of the patent No. 2250336 does not affect, as well as issues of the ratio of the thickness of the internal and external walls in the function of any technical indicator.

A known profile forming an impost in the manufacture of window and door blocks, display cases, dividing walls and other glazing systems, which is made of polyvinyl chloride (RF patent No. 54999, publ. 07.27.2006, MKI E06B 3/00).

During shrinkage of the curable polyvinyl chloride from which the profile is made, sagging is formed, visible depressions on the outer surfaces of the profile on the side of the surfaces opposite to the interface between the septum and the corresponding profile wall. The creation of the utility model according to patent No. 54999 is aimed at preventing the formation of sagging, for which it is proposed that the internal partition be thinner than the outer wall of the profile. Then, due to the difference in thickness, the inner partition will be deformed, and not the outer wall of the profile.

For those cases when this measure is not enough (the partition is located between the outer walls of the profile), structural changes have to be made to the profile.

The profile has a T-shaped section with the main part and a shelf protruding from both sides. The main part is made with a central cavity mating through an internal partition with a small cavity located at the end of the central part, opposite the end with the shelf. On the other hand, the central cavity through the internal partition mates with the cavities of the shelf.

The shelf is made with four cavities sequentially spaced across the width, separated by partitions. One (first) partition is located along the axis of symmetry of the section between the outer wall of the shelf and the partition with a central cavity. The second and third partitions are located symmetrically and each of them lies between the profile wall, forming the outer surface of the profile flange on its outer side, and the walls, forming the outer surface of the flange inside the corners between the sides of the flange and the main part. In this case, the second and third partitions are located at equal angles to the walls adjoining to it, the value of which lies in the range of 5-30 °. In the best embodiment, these angles are 15 °, the partitions 10 and 11 are inclined towards the central part of the profile with a cavity 1, and the thickness of the internal partitions is less than the thickness of the outer walls of the profile.

Due to the inclined arrangement of the second partition, it is possible to remove the weights from the front surface of the shelf, since each of the forces applied to the profile wall from the side of the second and third partitions, when they are inclined, can be decomposed into two mutually perpendicular components and the magnitude of the component perpendicular to the profile wall, obviously, less than in the case of a force acting in the same direction when the partitions are located at right angles, that is, in the case when the forces from the action of the partitions will not decay to mutually perpendicular components. The coupling of the partitions with the free sections of the outer walls of the profile without reference to the mating nodes of several walls and partitions of the section, allows to achieve good indicators of the strength of the profile. When performing the profile in accordance with this utility model, high manufacturability and productivity of its manufacture are retained.

In the best case, the second and third partitions are inclined towards the central part of the profile, and the thickness of the internal partitions is less than the thickness of the outer walls of the profile.

As in the invention according to patent No. 2250336, utility model No. 54999 does not address the issue of the ratio of the thicknesses of the front and inner walls of the profile, the dependence of the thickness of the walls of the profile on the weight of the glass unit.

Class A profiles produced by the applicant organization are characterized by the following technical indicators (“Windows, Doors and Facades” Journal No. 5 (34) 2009).

System Composition

- Profile of a box with an optical height of 64 mm. and a width of 70 mm.

- Impost / cross-section profile with an optical height of 86 mm. and a width of 70 mm.

- Bead profile with coextruded seal - 3 types, with an optical height of 18 mm and different widths.

- Sash profile with an optical width of 80 mm. and a width of 70 mm.

- Connecting profile with an optical height of 3 mm. and a width of 70 mm.

- Connecting profile with an optical height of 65 mm. and a width of 70 mm.

- A support profile with an optical height of 30 mm.

- Additional profiles with a width of 70 mm. and optical heights of 20, 40, 45 and 100 mm.

- Bay window profiles: A pipe with a diameter of 54 mm., And a bay window profile with an optical height of 40 mm. and a width of 70 mm.

The profiles of the 4-chamber profile Brusbox - 60-4 class A with a double-glazed window from 4 to 32 mm in size are made of plasticized polyvinyl chloride, high impact strength and resistance to climatic influences. The structural width of the profile is 60 mm. Installation width (depth) - 60 mm. The profile is made with double-circuit seals with an overlap of seals of 8 mm, with a natal gap of 3 mm, a false clearance of 12 mm, an offset of the axis of the locking device of 13 mm, with a filler height of 20 mm, with a bead height of 18 mm and a maximum filling thickness of 32 mm. At the same time, the heat transfer resistance (without reinforcement) is 0.82 m2 C / W, the sound insulation in different window assemblies reaches 46 dB. The profile modification -Brusbox-60-3 of the same class as Brusbox - 60-4 has the same characteristics, differing in the number of chambers - 3 instead of 4 and, accordingly, heat transfer resistance -0.76 m2 C / W (without reinforcement).

Brusbox-70-6 profiles of class A, with six cameras, with an installation width (depth) of 70 mm and a double-glazed unit with a size of 4 mm to 32 mm, are characterized by the following design features: the presence of external and internal pre-chambers in the profile allows optimal thermal protection, large the inner chamber for reinforcement allows you to place in it metal inserts of optimal cross-section, corresponding to the specific static conditions of the profiles.

The technical features of the profiles of the Brusbox-70-6 system in comparison with the Brusbox-60-3 are shown in Table 2.

Table 2. Brusbox Profile - 70-6 Brusbox Profile - 60-3 structural width - 70 mm. structural width - 60 mm. number of cameras - 6 pcs. number of cameras - 3 pcs. double seal double seal seal overlap - 8 mm. seal overlap - 8 mm. narture clearance - 3 mm narture clearance - 3 mm falslift - 12 mm. falslift - 12 mm. the displacement of the axis of the locking device is 13 mm. the displacement of the axis of the locking device is 13 mm. weld height - 20 mm weld height - 20 mm glazing bead height -18 mm glazing bead height -18 mm maximum filling thickness - 40 mm maximum filling thickness - 32 mm

From Table 2 it follows that in addition to the number of chambers, the profiles differ in the size of the maximum filling thickness, respectively, in the Brusbox - 70-6 system, a larger number of double-glazed window options can be installed.

Given the fact that the manufactured products belong to class A, the thickness of the front walls of the profile in them is at least 3 mm. This thickness is not always justified, since basically the strength of the profile is determined by the presence of the reinforcing profile, its configuration and the material from which it is made. Moreover, the implementation of the outer walls with a thickness of at least 3 mm leads to increased consumption of raw materials, to weighting the glass unit as a whole. The implementation of the inner walls of a smaller thickness to reduce the likelihood of occurrence of weights, at the same time reduces the weight of the glass and the consumption of raw materials for its manufacture. But the question is, to what limits and taking into account which parameters it is possible to reduce the thickness of the inner wall requires additional research.

The technical result, the achievement of which is aimed at creating the claimed utility model, is to reduce the weight of the profile forming the impost and the cost of raw materials for its manufacture without compromising its strength characteristics.

Unit weight Double-glazed windows Weight kg / m2 4-16-4 (two glasses 4 mm thick and one air chamber 16 mm thick) 20,0

4-10-4-10-4 (three glasses of 4 mm each and two air chambers 10 mm thick), 4-16-4-12-4 (three glasses of 4 mm and two air chambers 12 and 16 mm thick) 30,0 6-8-4-10-4 (one glass is 6 mm. Two by 4 mm and two air chambers by 8 and 10 mm thick) 35.0 8 (triplex) -10-4-6-4 40,0 4-6-3-16-4,4-12-3-24-4 27.5

The weight of a double-glazed window is the net weight of the 1st sq. double-glazed window assembly. The weight of the double-glazed unit affects the likelihood of sagging of the sash, a change in its geometry and, consequently, a violation of tightness, as well as the timing of wear of the fittings.

It has been experimentally established that for the outer wall of the profile for double-glazed windows weighing up to 70 kg, a thickness of up to 2.8 mm is sufficient from the point of view of strength characteristics of the profile, i.e. the thickness is less than that required by GOST 30673-99 for products of class A, without deterioration of technical indicators characteristic of products of this class.

The minimum thickness of the external wall of the profile, at which the technical parameters of the double-glazed window, with such an impost, are kept within the limits typical for class A products, is 2.5 mm.

The ratio of the thicknesses of the outer and inner walls of the profile, depending on the weight of the glass unit, is non-linear. Separate values of the thickness of the outer and inner walls for different ranges of values of the weight of the glass are shown in Table 3.

Table 3 The thickness of the external walls of the profile, mm The thickness of the inner walls of the profile, mm Unit weight, kg 2,5 2.0 up to 30 2.7 2,3 from 30 to 50 2,8 2.6 more than 50

When the weight of the glass unit is in the range from 30 to 50 kg, the ratio of the thicknesses of the external and internal walls of the profile forming the impost is in the range 1.17-1.18, linearly increasing with decreasing weight of the glass unit. When the weight of the double-glazed unit goes beyond 50 kg, the ratio of the thickness of the outer wall of the profile to the thickness of its inner wall changes nonlinearly, approaching the value 1, 075. Similarly, when the weight of the double-glazed unit is lower than 30 kg, the ratio of the thickness of the outer wall of the profile to the thickness of its inner the wall varies according to a nonlinear law, approaching the value of 1.25.

The utility model is illustrated by a specific example of a profile forming an impost in the manufacture of the frame shown in the drawing.

The profile has a T-shaped section with the main part and a shelf protruding from both sides.

The main part is made with a Central cavity 1, mating through the inner partition 2 with located on the end of the Central part, opposite the end with the shelf, a small cavity 3. On the other hand, the Central cavity 1 through the inner partition 4 is mated with the cavities 5 and 6 of the shelf. The shelf has four cavities, two central 5 and 6 and two peripheral 7 and 8. The cavities 5, 6, 7 and 8 are located sequentially across the width of the shelf and are separated by partitions 9, 10 and 11.

The first partition 9 is located along the axis of symmetry of the section between the outer wall 12 and the partition 2, and the second 10 and third 11 partitions are symmetrically located and each of them lies between the wall 12 and the walls 13 and 14.

Partitions 10 and 11 are located at the same angles to the walls 12, 13 and 14 conjugated with it, the magnitude of which lies in the range of 5-30 ° and in this particular case, the angles are 15 °. Partitions 10 and 11 are inclined towards the central part of the profile with a cavity 1.

Technical indicators of a particular system with an impost, the wall thickness of which is determined according to table 3:

Number of cameras: - 3

System Class - B

Mounting Depth, mm: - 60

Filling thickness, mm: - from 4 to 32

A universal system designed for different climatic zones and a variety of construction projects.

The height of the impost is 78 mm;

Quantity of contours of consolidation - 2;

Seal overlap - 8 mm;

Nesting clearance - 3 mm;

Faltsluft - 12 mm;

The offset axis of the locking device is 3 mm;

Depth height - 20 mm;

Bead height - 18 mm;

The maximum thickness is 32 mm.

When the outer wall thickness exceeds the specified limits in the direction of its decrease below 2.8 mm, respectively, with a double-glazed window weight of 50 kg and higher, the likelihood of a violation of the geometry of the wings, the occurrence of weights increases, the wear of fittings is unacceptably accelerated, and dimensional stability decreases.

With a decrease in the thickness of the inner wall below 2.5 mm, the likelihood of the appearance of weights, changes in the geometry of the structure increases, the wear of the hardware is accelerated, and the form stability is also reduced.

Moreover, the likelihood of an unacceptable decrease in the quality level, the inability to maintain the technical indicators characteristic of structures with the thickness of the external walls belonging to class A, outweighs the benefits of reducing weight and saving raw materials.

The profile is manufactured on a twin-screw extruder manufactured by the industry by extrusion of a powder composition with vacuum calibration. The production and assembly of window or door blocks is carried out according to generally accepted technology.

Claims (5)

1. The profile forming the impost is made of polyvinyl chloride and has a T-shaped section with the main part and a shelf protruding from both sides, the main part is made with a central cavity mating through the inner partition with the central end located on the end opposite the end with the shelf, a small cavity, on the other hand, the central cavity through the internal partition mates with the cavities of the shelf, made with four cavities sequentially located across the width of the shelf, separated by partitions, the first the partition is located along the symmetry axis of the section between the outer wall of the shelf and the partition with the Central cavity, and the second and third partitions are symmetrically and each of them lies between the wall of the profile, forming the outer surface of the shelf profile from the outside, and the walls forming the outer surfaces of the shelf inside angles between the sides of the shelf and the main part, while the second and third partitions are located at the same angles to the walls adjoining to it, the value of which lies in the range of 5-30 °, and the thickness external walls is in the range of 2.5-2.8 mm. 2. The profile according to claim 1, characterized in that the thickness of the internal partitions is less than the thickness of the outer walls of the profile. 3. The profile according to claims 1 and 2, characterized in that the thickness of the outer wall of the profile forming the impost is in the range of 2.5-2.8 mm with a weight of the glass unit, respectively, in the range from 30 to 50 kg. 4. The profile according to claims 1 and 2, characterized in that the ratio of the thickness of the outer wall of the profile to the thickness of its inner wall is in the range from 1.075 with a weight in a double-glazed unit of 30 kg or less to 1.25 with a weight of a double-glazed unit in 50 kg or more . 5. The profile according to claims 1 and 2, characterized in that when the weight of the glass unit is in the range from 30 to 50 kg, the ratio of the thickness of the outer wall of the profile to the thickness of its inner wall is in the range from 1.17 to 1.18.

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