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How to choose and design hardware fittings for doors and windows?
Release time:2022-06-24

abstract:How to choose and design hardware fittings for doors and windows?

Wenzhou Hardware Locks Exhibition was published in Zhejiang 

Hardware is the heart of doors and windows, not the supporting role! The cost of hardware will not be too small in a door and window. The cost of good door and window hardware accounts for 15%-30% of the total cost of doors and windows, so the purchase of door and window hardware is also very important for the owners!pictureone1. In addition to the physical and mechanical properties of doors and windows, what conditions do hardware fittings for doors and windows have to meet?① Easy operation, single point control: various opening functions can be realized by changing the position of the handle; (2) Standardization and serialization, so that door and window enterprises and construction companies can quickly install; ③ adjustability; ④ Strong bearing capacity; ⑤ High safety; ⑥ Widely used; ⑦ Strong applicability (high quality specification)picture2. How should hardware fittings for doors and windows be selected and designed?① When selecting hardware fittings, try to choose products with guaranteed quality. The quality grade of hardware fittings should be consistent with that of doors and windows. The structure and shape of hardware fittings should be consistent with profiles, with harmonious and beautiful colors, correct functions, flexible operation and convenient installation.② Installation of hardware fittings should be complete, standardized, reliable and accurate. After installation, doors and windows are beautiful in appearance, flexible and convenient to open, and free from deformation, obstruction and collision.③ Stainless steel products shall be preferred for exposed fasteners of hardware fittings.④ Multi-locking points should be adopted when the doors and windows with flat doors and large sliding doors and windows are closed, otherwise the air tightness will be greatly reduced under the negative pressure difference. Considering the convenience of operation, it is best to use multi-locking point handles or actuators.picture3. How wide is the sash of casement window?What are the disadvantages of installing an oversized sash? Some owners like big sashes, and think that they have good ventilation effect. In fact, there is little difference between the ventilation effect of bigger sashes and smaller sashes. And what are the shortcomings of a casement that is too big? First, the heavy sash increases the load of sliding supports, hinges, hinges and other accessories, increases the friction, shortens the service life of accessories, and also increases the resistance to opening and closing. Second, when the window sash is opened and closed, the stroke of the hand lock is increased, which requires more arms to be extended, which will also increase the difficulty of opening and closing and increase the danger.Generally, the width of window sash is 60-65cm. Some owners want to be 75cm wide, which is a bit too big.4. How high is the position of door and window handle?It is best to explain the position of the casement handle lock when placing an order, so as to adjust the parameters in the design and processing. After all, they are customized according to the specific situation of the owner. How high is the position of the handle lock appropriate? Once, a 1.8-meter-tall male owner liked to install it higher, but when the designer came to the door and saw his wife who was only 1.5 meters tall, he changed his plan. Indeed, it is more important to know the height of female owners when designing. Generally, female owners are 1.5-1.6 meters tall, but they are even shorter when they wear slippers at home. The locks are too high, which makes it inconvenient for female owners to open and close the window sash, especially when the window sash is opened to a large angle, which requires the female owner's body to lean out of the window, which is not only laborious but also dangerous. But too low is not suitable for male owners.Under normal circumstances, the height of the handle lock from the ground should be near the shoulder of the female owner, usually about 1.4 meters. If the female owner is tall, it should be raised.5. Poor-quality sliding supports will loosen after being used for a period of time, which will seriously cause the casement to fall off and cause potential safety hazards. What are the requirements for high-quality sliding supports in terms of materials?The sliding brace must be protected from rust, because rust will affect the smoothness of sliding and reduce the mechanical properties of sliding brace, which will lead to fracture. To have good corrosion resistance, it is necessary to choose high-grade stainless steel above 300 series, such as 304 stainless steel. This kind of stainless steel has high corrosion resistance, high strength and toughness, while low-grade stainless steel with 2-prefix, such as 201 and 202, has lower corrosion resistance than 300 series. Moreover, 304 stainless steel has high wear resistance.In addition, the thickness of the sliding brace also affects the bearing capacity. When the sash is heavy, it is best to choose the sliding brace with a thickness of more than 2.5.6. Why does the hinge show grease after a period of time?After the hinge runs for a period of time, the viscosity of the grease added in it decreases and it is easier to flow out; At the same time, the shaft core and reel of the hinge will be worn to different degrees. When the wear is serious, more black iron powder will be produced, which will blacken the grease. Therefore, depending on the use of oil and processing accuracy, transparent or black grease will flow out sooner or later, which will affect the appearance to varying degrees.7. It is often said that door and window hardware, which "five" gold do you mean?① Building door locks: locks installed on doors and doorframes of buildings that need to be opened and closed. Generally, it consists of lock body (including bolt, door and window hardware, control mechanism and braking mechanism), lock panel, handle and cover plate.② Handle: used to open and close the metal window sash. Generally, it is installed in the middle of the edge of the window sash, and some are designed as a mechanism that connects the door and window hardware with the bolt. Brass, low carbon steel, zinc alloy, stainless steel and other materials are used for punching, and the surface is plated with nickel, chromium or zinc.③ Support: used to position the opened metal sash. Generally installed at the lower edge of the window sash, and some are designed as mechanisms used with hinges.④ Hinge: also called hinge. It is the connector between door and frame, window and window frame, which can make the door and window rotate freely and open and close the door and window hardware. Hinge is formed by connecting blades and pins.⑤ Door Closer: An appliance that can automatically close or fix the opened door leaf in a certain position.picture8. How to properly maintain the door and window hardware to prolong its service life?① Stainless steel handles and other stainless steel "hardware" can be scrubbed with brightening agent, which can increase the brightness.② Movable parts such as hinges, lifting wheels, casters, etc. may reduce their functions due to the adhesion of dust during long-term movement. Playing with one or two drops of lubricating oil every six months can keep them smooth.③ Pay special attention to the direction of handle rotation and stretching, and avoid using dead force. In particular, children should be taught not to dangle from the doorknob, which is likely to cause danger and harm to the inner door. But once the lock is broken, basically, the house seems to be undefended, and the potential safety hazard is very great!④ When the lock core is not sensitive enough, a small amount of black powder can be scraped off the pencil lead and blown into the lock hole lightly. This is because graphite is an excellent solid lubricant. Do not drip lubricating oil, as it will be easier to adhere to dust.picture9. Why can door and window hardware affect the economic performance of doors and windows and the life of the whole window?There is also fierce market competition in the door and window industry. One of the important ways to get rid of single price competition and create a benign market environment is to continuously enrich product functions and expand product profit margins with technical advantages. And the important link that can enrich the functions of doors and windows products is hardware accessories. The quality of hardware also affects the life of doors and windows. Good hardware should look thick, with good surface gloss, dense protective layer and no scratch. The most important thing is that it should be opened flexibly.pictureWith the improvement of life and the development of modern science and technology, building doors and windows are made of different materials. Nowadays, in residential and other construction projects, there are generally polyvinyl chloride (PVC), aluminum alloy, stainless steel, color steel and other materials. However, the hardware fittings of building doors and windows made of different materials are also different. The opening methods of doors and windows are push-pull, flat opening and hanging up, and the hardware fittings of doors and windows used should be consistent with them. Hardware accessories can be called the heart of doors and windows. The full play of all properties of doors and windows, such as wind pressure resistance, air tightness, water tightness, heat insulation and sound insulation, are closely related to hardware accessories.