WO2011043747A2

WO2011043747A2 - Innovation improving heat and sound insulation on moving canopies and providing more lighting from sunlight in the area covered by the awning

Info

Publication number: WO2011043747A2
Application number: PCT/TR2010/000196
Authority: WO
Inventors: Timoteos Ozyurek
Original assignee: Skan Ic Ve Dis Ticaret Insaat Elektronik Tekstil Gida Ve Maden Sanayi Anonim Sirketi
Priority date: 2009-10-06
Filing date: 2010-09-30
Publication date: 2011-04-14
Also published as: TR200907553A2; WO2011043747A3

Abstract

This invention involves the innovation improving the heat and sound insulation of the folding awnings, and enabling more sunlight enter in the area covered by the awning; and its characteristic is using PVC convex membrane (B6) consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part (B6-3) (or fabric having similar or same features with this material) as awning fabric.

Description

SPECIFICATIONS

INNOVATION IMPROVING HEAT AND SOUND INSULATION ON MOVING CANOPIES AND PROVIDING MORE LIGHTING FROM SUNLIGHT IN THE AREA COVERED BY THE AWNING

TECHNICAL FIELD

This invention can be used in all rail folding canopies.

KNOWN STATUS OF THE TECHNIQUE

Today, various fabrics are used in making rail folding canopies. It has not been so long since rail folding canopies were brought into use of people. Therefore, as the problems in use regarding rail folding canopies are defined, new inventions are made to solve these problems. The fabrics called "blackout", used in rail folding canopies, consist of a three-layered structure. This three-layered structure is intended for providing heat insulation (no to allow entry of heat entry to the area covered by the awning in summer; not to allow the heat in the area covered by the awning escape outside in winter). The awning fabric called "blackout" or other fabrics used to provide heat insulation do not reach the maximum heat insulation level. Also, these type of fabrics prevent sunlight by 100% from entering in the area covered by the awning. Therefore, it becomes vital to make lighting even in daytime in the area covered by the awning. Such lighting brings a cost. Also, these types of fabrics cannot make the function of preventing outside voices (traffic sound, sound of the crowd, etc.) from entering the area covered by the awning, and the inside voices (music, etc.) from going outside.

DESCRIPTION OF THE INVENTION

The invention eliminates the abovementioned disadvantages. The fabric used in rail canopies is made of PVC convex membrane and of the material having this feature. The characteristic of this material is showing additional insulation characteristics thanks to the air bubbles in its structure. Heat insulation (preventing the outside heat from entering the area covered by the awning in summer; and the inside heat from escaping outside in winter) is better compared to blackout fabric and other fabrics. By this way, the reduction in the energy used for cooling the area covered by the awning in summer; and for heating the area covered by the awning in winter leads to a decrease in the energy cost. Entry of sunlight in the area covered by the awning is better compared to blackout and other fabrics. By this way, the reduction in the amount of electricity used for daytime lighting also leads to a decrease in the lighting cost. The PVC convex membrane used in the product subject for invention prevents the outside sound from entering inside of the awning or the sound inside the awning from going outside the more effectively than other fabrics. The invention involves the constructions that allow use of PVC convex membrane and other materials having this feature in the rail folding awnings as fabric, and use of these materials in rail folding awnings.

NUMBERING OF PARTS

Moving System

A1. Motor box

A2. Motor box shaft tube axis

A3. Shaft tube

A4. Shaft axis connector

A5. Shaft tube pulley gear connection axis

A6. Pulley bearing

A7. Pulley gear

A8. T10 trigger belt

A9. Rail profile

Fabric

B1. Fabric front profile cart B2. Fabric front profile

B3. Fabric middle profile cart

B4. Fabric middle profiles

B5. Fabric back fixed profiles

B6. PVC convex membrane

B6-1. Upper PVC

B6-2. Lower PVC

B6-3. Convex part

B7. Fabric cord

B8. Fabric spacer

B9. Cable duct

B10. Middle profile side plastic Construction

C1. Post

C2. Front joist

C3. Middle joists

C4. Rail middle joist connection apparatus C5. Middle joist back connection apparatus

C6. Middle joist front connection apparatus

C7. Stainless post shoe

C8. Back registration

C9. Wall assembly stand

C10. Middle joist back connection apparatus

C11. Roof carrier registration

C12. Roof carrier assembly apparatus

C13. Aluminum roof

C14. Aluminum joist roof

C15. Drain

C16. Fall PVC Convex Membrane

D1. H-corded bend

D2. Hollowed

D3. Bottom-ducted bent

D4. Double-sided bend ducted

D5. Top-ducted bent

D6. Fabric duct BRIEF EXPLANATION OF DRAWINGS

Figure 1. View of the PVC convex membrane subject for invention on the awning together with other parts consisting the awning while the awning is disassembled Figure 2. View of the PVC convex membrane subject for invention together with other parts constituting the awning while the awning is assembled

Figure 3. Cross-section view of the structure of the PVC convex membrane subject for invention consisting of the upper PVC and convex part

Figure 4. Cross-section view of the structure of the PVC convex membrane subject for invention consisting of the lower PVC and convex part

Figure 5. Cross-section view of the structure of the PVC convex membrane subject for invention consisting of the upper PVC, lower PVC and convex part

Figure 6. Cross section view of the structure of the PVC convex membrane subject for invention consisting of the upper PVC, lower PVC and convex part assembled with the H-corded bend PVC convex membrane while the awning is opened.

Figure 7. Cross section view of the structure of the PVC convex membrane subject for invention consisting of the upper PVC, lower PVC and convex part assembled with the H-corded bend PVC convex membrane While the awning is closed.

Figure 8. Cross-section view of the structure of the PVC convex membrane subject for invention consisting of the upper PVC, lower PVC and convex part, hollowed at certain twisting points while the awning is opened.

Figure 9. Figure 9. Cross-section view of the structure of the PVC convex membrane subject for invention consisting of the upper PVC, lower PVC and convex part, hollowed at certain twisting points while the awning is closed.

Figure 10. View of the structure of the PVC convex membrane subject for invention consisting of the upper PVC, lower PVC and convex part, with bottom ducts opened at twisting points while the awning is opened.

Figure 11. View of the structure of the PVC convex membrane subject for invention consisting of the upper PVC, lower PVC and convex part, with bottom ducts opened at twisting points while the awning is closed. Figure 12. View of the structure of the PVC convex membrane subject for invention consisting of the upper PVC, lower PVC and convex part, with double- sided ducts opened at twisting points while the awning is opened.

Figure 13. View of the structure of the PVC convex membrane subject for invention consisting of the upper PVC, lower PVC and convex part, with double- sided ducts opened at twisting points while the awning is closed.

Figure 14. View of the structure of the PVC convex membrane subject for invention consisting of the upper PVC, lower PVC and convex part, with top ducts opened at twisting points while the awning is opened. Figure 15. View of the structure of the PVC convex membrane subject for invention consisting of the upper PVC, lower PVC and convex part, with top ducts opened at twisting points while the awning is closed. Figure 16. View of the PVC convex membrane subject for invention on the perspective drawing of the awning with fabric duct opened.

Figure 17. Detailed view of the PVC convex membrane subject for invention on the awning with fabric duct opened.

EXPLANATION OF THE INVENTION

Construction Assembly: After the assembly stands (CP) are assembled to the wall, the back registrations (C) are fastened to the wall assembly stands (C9) by bolts. After the middle joist back connection apparatuses (C5) are assembled to the back registration (C8) by screw, the main joists (C3) are fastened with by bolts. After the post (C1) and front joist (C2) are fixed to each other, the middle joist front connection apparatuses (C6) are fastened to the middle joist back connection apparatus (C5) by screws, and the middle joists (C3) are inserted into the middle joist front connection apparatus (C6), and fastened by screws. Then, the rail profiles (A9) are fastened to the rail middle joist connection apparatus (C4) by bolts. The motor box (A1) is mounted to the back registration (C8) by screws, and the motor box shaft tube axes (A2) are inserted to the right and left sides of the motor box (A1). The shaft tubes (A3) are inserted into the motor box shaft tube axes (A2), and the shaft tube pulley gear connection axes (A5) are inserted into the shaft axis connectors (A4). The shaft tube gear connection axes (A5) inserted into the pulley bearings (A6) transmit the force from the motor box (A1) to the motor box shaft tube axis (A2). The motor box (A1) activates by electrical current, and the starts to rotate the motor box shaft tube axis (A2), shaft tube (A3) and shaft axis connector (A4). The force coming to the shaft tube pulley gear connection axis (A5) activates the pulley gear (A7) connected to the pulley bearing (A6). The T10 trigger belt (A8) connected to the pulley gear (A7) activates and starts to rotate. The moving fabric front profile cart (B1) fixed to the T10 trigger belt (A8) starts to move the fabric front profile (B2) connected to it and the fabric middle profile car (B3) forward. As the fabric front profile (B2) advances, it moves the fabric middle profile carts (B3) forward, and advances until the PVC convex membrane (B6) is stretched. The PVC convex membranes (B6) cut in various sizes proportionally with the product are affixed to each other. Fabric cords (B7) in a quantity proportional to the opening part are affixed on the combined PVC convex membranes (B6) by equal intervals. Cable ducts (B9) are affixed to the back edges of the PVC convex membrane (B6) perpendicularly to the fabric cords (B7). The fabric middle profiles (B4) cut proportionally to the PVC convex membrane (B6) is inserted into the fabric cords (B7). After the middle profile side plastics (B10) are attached to both sides of the fabric middle profiles (B4), the PVC convex membrane (B6) is stretched, and the fabric spacer (B8) is fixed to the PVC convex membrane by screws. The ready PVC convex membrane (B6) is fixed to the fabric front profile cart (B1) and fabric middle profile carts (B3) using the middle profile side plastics (B10) and bolts. The drain (C15) is connected to the front joist (C2) using silicon and bolts. A water hole is opened for the drain (C15) over the posts (CI), and the water fall (C16) is connected using silicon and bolts. After the post (C1) is balanced, the stainless post shoe (C7) is fastened to the ground by steel or chemical fixing plug, and the stainless post shoe (C7) is screwed to the post (C1). The roof carrier assembly apparatuses (C12) are fastened between the middle joists (C3) at a distance in the width of the PVC convex membrane (B6). The roof carrier registrations (C11) are assembled between the roof carrier assembly apparatuses (C12), and the aluminum roof (C13) is assembled by silicon and sealed screw.

Use of the PVC convex membrane (B6) subject for invention in the rail moving awnings improves the heat and sound insulation on the moving awnings, and allows the sunlight make more lighting in the area covered by the awning.

The PVC convex membrane (B6) subject for invention can be attained in multiple structures: First is the structure seen in figure 5. In this structure, the PVC convex membrane (B6) consists of upper PVC (B6-1), lower PVC (B6-2), and convex part (B6-3).

Second is the structure seen in figure 3. In this structure, the PVC convex membrane (B6) consists of upper PVC (B6-1), and convex part (B6-3).

Third is the structure seen in figure 4. In this structure, the PVC convex membrane (B6) consists of lower PVC (B6-2), and convex part (B6-3). The cross-section view of the PVC convex membrane (B6) is shown in figure 5. The PVC convex membrane (B6) seen in figure 5 consists of upper PVC (B6-1), lower PVC (B6-2), and convex part (B6-3). These three structures can be combined to each other by affixing, laminating by heat or a different method. In use of the PVC convex membrane (B6) made by this way in rail moving awnings, it is impossible for the PVC convex membrane (B6) to be folded while the awning is being closed. The reason is: the lower and upper part is rigid, and the middle part is flexible, so that folding is physically impossible in this state. When PVC convex membrane (B6) consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part (B6-3) is used in rail moving awnings, the lower structures are applied to the PVC convex membrane (B6) to enable the PVC convex membrane (B6) be folded while the awning is being closed.

The structures having the same result with the lower structures are included in the subject of this patent, and they shall be considered equivalent with the structures explained in detail below.

The rail moving awning the drawing of which is shown in figure 1 is used by assembling PVC convex membrane (B6) onto it. The PVC convex membrane (B6) consisting of upper PVC (B6-1 ), lower PVC (B6- 2) and convex part (B6-3) can be used by combining the H-corded bend with the PVC convex membrane (D1) using and combining method (affixing, laminating by heat, etc.). Here, the existence of H-corded bend PVC convex membrane (D1) is intended for ensuring the PVC convex membrane (B6) consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part (B6-3) and used in the moving awnings, be folded while the moving awning is being closed. For this purpose, the H-corded membrane (D1) may whether be used on the PVC convex membrane (B6), consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part (B6-3), in the quantity as seen in figure 6, or may be used in various quantities (less or more) so that it enables the PVC convex membrane (B6) be folded while the awning is being closed. Figure 6 shows the view of the H-corded bend PVC convex membrane (D1), PVC convex membrane (B6) consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part, and of the fabric middle profiles (B4) while the moving awning is opened. Figure 7 shows the view of the H-corded bend PVC convex membrane (D1), PVC convex membrane (B6) consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part, and of the fabric middle profiles (B4) while the moving awning is closed. In this structure, on the H-corded bend PVC convex membrane (D1) parts, it is seen that it is enabled for the PVC convex membrane convex membrane (B6) consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part (B6-3) and used as moving awning fabric be folded such that it does not affect the closing of the awning. For the PVC convex membrane (B6) consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part (B6-3) subject for invention, the hollowed (D2) parts as seen in figure 8 can be used in the structure of the PVC convex membrane (B6) by being attained using any hollowing method. Here, the existence of hollowed (D2) parts is intended for ensuring the PVC convex membrane (B6) consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part (B6-3), used in the rail moving awnings be folded while the moving awning is being closed. The hollowed (D2) parts may whether be used on the PVC convex membrane (B6) consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part (B6-3) in the quantity as seen in figure 8, or may be used in various quantities (less or more) so that it enables the PVC convex membrane (B6) be folded while the awning is being closed. Figure 6 shows the view of the hollowed (D2) part, PVC convex membrane (B6) consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part, and of the fabric middle profiles (B4) while the rail moving awning is opened. Figure 9 shows the view of the hollowed (D2) part, PVC convex membrane (B6) consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part, and of the fabric middle profiles (B4) while the rail moving awning is closed. In this structure, on the hollowed (D1) parts, it is seen that it is ensured for the PVC convex membrane convex membrane (B6) consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part (B6-3) and used as moving awning fabric be twisted such that it does not affect the closing of the awning.

For the PVC convex membrane (B6) consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part (B6-3) subject for invention, the bottom-ducted bent (D3) structure as seen in figure 10 can be used in the structure of the PVC convex membrane (B6) by being attained using any bottom-duct opening method. Here, the existence of bottom-ducted bent (D3) structure is intended for enabling the PVC convex membrane (B6), consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part (B6-3), used in the rail moving awnings, be folded while the moving awning is being closed. For this purpose, the bottom-ducted bent (D3) structure may whether be used on the PVC convex membrane (B6) consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part (B6-3) in the quantity as seen in figure 11 , or may be used in various quantities (less or more) so that it enables the PVC convex membrane (B6) be folded while the awning is being closed. Figure 10 shows the view of the bottom-ducted bent (D3) structure, PVC convex membrane (B6) consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part, and of the fabric middle profiles (B4) while the rail moving awning is opened. Figure 11 shows the view of the bottom-ducted bent (D3) structure, PVC convex membrane (B6) consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part, and of the fabric middle profiles (B4) while the moving awning is closed. Here, on the bottom-ducted structure, it is seen that it is enabled for the PVC convex membrane (B6) consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part (B6-3) and used as moving awning fabric be twisted such that it does not affect the closing of the rail folding awning. Especially, in case the awning is being closed, two bottom-ducted bent (D3) are opened to the PVC convex membrane consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part (B6-3) at the location corresponding exactly to the twist point so that the PVC convex membrane consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part (B6-3) can be folded.

For the PVC convex membrane (B6) consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part (B6-3) subject for invention, the double-sided bend ducted (D4) structure as seen in figure 12 can be used in the structure of the PVC convex membrane (B6) by being attained using any double-sided duct opening method. Here, the double-sided bend ducted (D4) structure is intended for enabling the PVC convex membrane (B6) used in the rail moving awnings be folded while the moving awning is being closed. For this purpose, the double-sided bend ducted (D4) structure may whether be used on the PVC convex membrane (B6) consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part (B6-3) in the quantity as seen in figure 12, or may be used in various quantities (less or more) so that it enables the PVC convex membrane (B6) be folded while the awning is being closed. Figure 12 shows the view of the double-sided bend ducted (D4) structure, PVC convex membrane (B6) consisting of upper PVC (B6-1 ), lower PVC (B6-2) and convex part, and of the fabric middle profiles (B4) while the moving awning is opened. Figure 13 shows the view of the double-sided bend ducted (D4) structure, PVC convex membrane (B6) consisting of upper PVC (B6- 1), lower PVC (B6-2) and convex part, and of the fabric middle profiles (B4) while the moving awning is closed. Here, on the double-sided ducted structure, it is seen that it is enabled for the PVC convex membrane (B6) consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part (B6-3) and used as moving awning fabric be twisted such that it does not affect the closing of the awning. Especially, in case the awning is being closed, two double-sided bend ducted (D4) are opened to the PVC convex membrane consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part (B6-3) at the location corresponding exactly to the twist point so that the PVC convex membrane consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part (B6-3) can be folded.

For the PVC convex membrane (B6) consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part (B6-3) subject for invention, the top-ducted bent (D5) structure as seen in figure 14 can be used in the structure of the PVC convex membrane (B6) consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part (B6-3) by being attained using any top-duct opening method. Here, the top- ducted bend (D5) structure is intended for enabling the PVC convex membrane (B6) used in the moving awnings be folded while the moving awning is being closed. For this purpose, the top-ducted bent (D5) structure may whether be used on the PVC convex membrane (B6) consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part (B6-3) in the quantity as seen in figure 14, or may be used in various quantities (less or more) so that it enables the PVC convex membrane (B6) be folded while the awning is being closed. Figure 14 shows the view of the top-ducted bent (D5) structure, PVC convex membrane (B6) consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part, and of the fabric middle profiles (B4) while the moving awning is opened. Figure 15 shows the view of the top- ducted bent (D5) structure, PVC convex membrane (B6) consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part, and of the fabric middle profiles (B4) while the moving awning is closed. Here, on the top-ducted structure, it is seen that it is enabled for the PVC convex membrane (B6) consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part (B6-3) and used as moving awning fabric be twisted such that it does not affect the closing of the awning. Especially, in case the awning is being closed, two bottom ducted bent (D3) are opened to the PVC convex membrane consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part (B6-3) at the location corresponding exactly to the twist point so that the PVC convex membrane consisting of upper PVC (B6-1), lower PVC (B6- 2) and convex part (B6-3) can be folded. If the configuration of the PVC convex membrane (B6) consisting of upper PVC (B6-1), lower PVC (B6-2) and convex part (B6-3), in case the moving awning is being closed, the PVC convex membrane (B6) must be processed in various geometrical structures (bottom-ducted bent (D3), double-sided bend ducted (D4), top-ducted bent (D5), hollowed (D2) part, H-corded bend PVC convex membrane (D1)) using the abovementioned methods or other methods so that the moving awning can be folded. In the configuration of the PVC convex membrane consisting of upper PVC (B6-1) and convex part (B6-3), or in case it is used in the configuration consisting of the lower PVC (B6-1) and convex part (B6-3), when the moving awning is being closed, the awning fabric is twisted so that it can be folded without being subject to additional geometrical processes (bottom-ducted bent (D3), double-sided bend ducted (D4), top-ducted bent (D5), hollowed (D2) part, H-corded bend PVC convex membrane (D1)). In this case, cord (B7) is used on the sides of the awning over fabric to be used to prevent the rain water pass this cord, thus, the rain water is prevented from entering inside the awning. In case the awning fabric is made of PVC convex membrane (B6), it is possible to use it by opening ducts (D6), without affixing cords (B7) on the sides. In this case, rain water cannot enter in the awning from the duct (D6). When duct is (D6) used instead of cord (B7) on the PVC convex membrane (B6), the cost of the cord and the process of fixing (by stitching, affixing or other methods) the cord to the PVC convex membrane (B6) to be used as awning fabric are being eliminated. The PVC convex membrane (B6) in this structure is seen in figure 17 and figure 18.

Water repellent chemicals are added onto the surface of the PVC convex membrane (B6) consisting of lower PVC (B6-2) and convex part (B6-3), or the PVC convex membrane (B6) consisting of lower PVC (B6-1) and convex part (B6- 3) to prevent it from absorbing the rain water.

Claims

It involves the PVC convex membrane (B6) specified in Claim 1, and its characteristic is having the capability of being combined with the H-corded bend PVC convex membrane (D1) using any combining method (affixing, laminating by heat, etc.) so that it can be folded while the awning is being closed.

It involves the PVC convex membrane (B6) specified in Claim 1, and its characteristic is existence of H-corded bend PVC convex membranes (D1) in an adequate quantity on adequate locations of the PVC convex membrane (B6) so that it can be folded while the awning is being closed.

It involves the PVC convex membrane (B6) specified in Claim 1 , and its characteristic is that hollows (D2) in an adequate quantity are made on adequate locations of the PVC convex membrane (B6) using any hollowing method.

It involves the PVC convex membrane (B6) specified in Claim 1, and its characteristic is that bottom-ducted bents (D3) in an adequate quantity are made on adequate locations of the PVC convex membrane (B6) using any bottom-duct opening method.

It involves the PVC convex membrane (B6) specified in Claim 1 , and its characteristic is that double-sided duct bend ducted (D3) in an adequate quantity are made on adequate locations of the PVC convex membrane (B6) using any double-sided duct opening method.

7. It involves the PVC convex membrane (B6) specified in Claim 1, and its characteristic is that top-ducted bents (D3) in an adequate quantity are made on adequate locations of the PVC convex membrane (B6) using any top-duct opening method.

8. This invention involves the innovation improving the heat and sound insulation of the folding awnings, and enabling more sunlight enter in the area covered by the awning; and its characteristic is using PVC convex membrane (B6) consisting of upper PVC (B6-1) and convex part (B6-3) (or fabric having similar or same features with this material) as awning fabric.

9. This invention involves the innovation improving the heat and sound insulation of the folding awnings, and enabling more sunlight enter in the area covered by the awning; and its characteristic is using PVC convex membrane (B6) consisting of lower PVC (B6-2) and convex part (B6-3) (or fabric having similar or same features with this material) as awning fabric.

10. lt involves the PVC convex membrane (B6) specified in claim 1 , claim 8 and claim 9, and its characteristic is that a duct (D6) is opened so that rain water cannot enter in the awning.

11. It involves the PVC convex membrane (B6) specified claim 8 and claim 9, and its characteristic is that water repellent chemicals are added onto the surface of the PVC convex membrane (B6) to prevent the awning from absorbing the rain water over the PVC convex membrane (B6).