Introduction
The invention comprises a gauze and a gaupage retracting mechanism composed of a main pipe, a spring box, a shaft support, an inner shaft and an end seat, and has the function of a common screen window, and can adjust the opening degree of the window glass and the screen window as needed, when the glass window is When pushed open, the gauze expands with the glass window to cover the open part. When the glass window is closed, the gauze is wound on the inner shaft and stored in the main tube under the spring force of the retracting mechanism, which does not occupy space and does not affect the window. The beautiful appearance, with the glass window switch or hidden or existing, easy to assemble and disassemble, is an ideal screen window for use with sliding windows.
Invisible screens invisible screens are not really "invisible". The design principle of invisible screens is only that the material has a very small wire diameter (thousandth of a millimeter) and a very high light transmittance (96%). It is like “no screen window is almost the sameâ€: 1. The material that can make invisible screen window requires high tensile strength, transparency, corrosion resistance, weather resistance, stability and low refractive index. 2. Transparent monofilament must be used. 3, the compilation density is large, can form the diffraction phenomenon of light, forming "advanced white". 4, chemical coating, increase light transmittance.
Common window screens are glass fiber yarn, polyester yarn and Taiwan SPL yarn. Both the glass fiber yarn and the polyester yarn are plain weave yarns. Now we are using glass fiber flat weaving yarn. Available in black, grey and off-white. The north is more black, the south is more gray, but the black yarn is stronger than the gray yarn. The mill needs to add carbon black when producing black yarn, and add gray pigment when producing gray yarn. Carbon black itself is a stabilizer and adhesive that allows PVC to adhere better to fiberglass filaments. This is also the reason why the black yarn is stronger than the gray yarn. Polyester yarns are high in strength but not fire resistant and have been banned in some cities such as Beijing. Taiwan SPL yarn is twisted yarn, which is the strongest of these yarns, but the price is high, the key problem is still not fireproof. Some people use this yarn in home decoration, but it can not be used in engineering.
Nailless installation
At present, there are two main methods for installing invisible screens on the market: according to the opening type of the window, there are a flat type and a push-pull type, and the flat type is fixed on the window by a plurality of straight buckles and cannot be moved. The other is push-pull type, which is fixed directly on the slide rail and can be moved on the slide. The type of opening of the general window determines the way the screen is installed. The installation method of the nail-free invisible screen window is fixed by high-strength double-sided tape and glass glue. It can be used without damage to the window and is installed firmly. Therefore, it is used by more and more manufacturers, but it is not recommended for high-rise residential buildings. The use of nail-free shutter invisible screens is simple because there is no screw fixing. In case of invisible screens falling off, it will cause personal injury or property damage, so this invisible screen window is not recommended for high-rise residences.
Professional knowledge
1 When you purchase invisible screens, you must first look at the profiles. Now the market is mainly divided into aluminum alloy and plastic steel. The main market for plastic profiles is engineering, which lasts for about 1 year. The aluminum alloy profile market is divided into two aspects: engineering and home improvement. The engineering screen window has a service life of about 4 years, and the home decoration screen window has a service life of about 6 years. Note that (the age of use is not the overall damage of the screen window, but partial damage.)
Suggestion: The owner should look at the strength of the aluminum alloy when selecting the screen door and window, because there is a big difference in the thickness of the profile and pay attention to the hardness of the aluminum.
2 Bearing difference: Bearings are divided into domestic bearings and imported bearings.
Recommendation: Because Beijing has a lot of wind and sand weather, domestic bearings are open bearings. If you enter the dust, it will not work smoothly. It is best to buy imported fully enclosed silent bearings.
3 Spring selection: The spring is divided into a spring for the window and a spring for the door.
Suggestion: Because it is an invisible accessory, look at the rewinding effect with a few hand-drawings after installing the screen door. If the rewind is too slow, it may be a window spring for you.
4 The difference between gauze: gauze is divided into glass fiber mesh and polyester coated chemical fiber mesh.
Recommendation: Glass fiber mesh is the mainstream gauze in the market. Its advantages are flame retardant, aging and environmental protection. The best glass fiber gauze in China is the gauze exported from Tianjin. The general price is higher than that of Hebei gauze. The quality is better than that of Hebei. The quality of the gauze can mainly observe whether the hole is square and even, the color is uniform, and the gauze surface is flat. Generally, the fiberglass gauze has a service life of more than 8 years, but many times it is because of gauze dust. Too many to be replaced. The polyester coated chemical fiber net is mainly used for folding screens or folding screen doors, and is characterized by continuous folding, light weight and deformation. However, the service life is not long, and deformation usually occurs in 3-4 years.
5 Screen design: Because the current window height is too high and the width is too narrow, it is inconvenient when you use the screen window. For example, if the pull is too high, it will be too much effort. The gauze will be blown out by the wind, and the magnetic strip will not be able to automatically rewind and so on.
Recommendation: If your home's window height exceeds 1 meter 4 after. When you are ready to order, ask the designer to design a side pull style. Not only is it light to use, it does not cause the above reasons. The age of the screen window will also increase. Because the screen window is pulled out a short distance, the pressure on the screen accessories is relieved. Basically, it will not cause any malfunction during the warranty period.
6 Screen door design: Because the lower track is often stepped on by the foot, pay attention to the profile when purchasing the screen door, and have a unique anti-tread design.
Recommendation: After the screen door width exceeds 1 m 2 , the pair of screen doors should be installed. Because the screen door is pulled open on one side, the rewinding at this time is not smooth.
7 The color of the door and window: Because the color of the doors and windows in Beijing is complicated, it is necessary to pay attention to the quality of the color after the purchase of the screen door and window. Is there any color loss or shedding? The surface color treatment process of the invisible screen door of the large manufacturers is electrostatic powder. After the spraying, it is baked and shaped. This production process is used for the production process of broken aluminum doors and windows, so it is most suitable with the doors and windows and will not be the same.
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