Hinge (hinge) is used for vertical hinged door and inner casement window, connecting door and window frame Japanese fan to realize the opening and closing function of doors and windows, which is the inner vertical hinged door
The load-bearing part of the window.
According to the use of object division, hinge is divided into two categories: door hinge (hinge) and window hinge (hinge).
When we mention the hinge, what will come to mind first? The author believes that the most impressive thing is its repeated "tossing" in life scenes ".
Yes, Hinge (hinge) is to use actions to interpret what is called "Endless Life, endless tossing".
I can't see you, the resultant force on doors and windows has experienced many repeated ups and downs under the action of external force at ordinary times. It not only has to be tested in gravity, but also has to bear the responsibility in the wind pressure, it's just a model worker on the door and window hardware.
The ant can lift objects that weigh about 100 times more than its weight, and the hinge also has a body that is no less than the ant's tendon.
Assuming that the same quality is 50kg, the tensile force (static load) on the quality of doors and windows must reach 500N.
The above picture is taken from: book 《 aluminum alloy doors and windows Table 5-2 door upper hinge (hinge) bearing static load (tension)
however, in Casement, the tensile force (static load) required to reach 1400N.
The picture above is taken from: book aluminum alloy doors and windows Table 5-3 upper hinge of window (hinge) bearing static load (tension)
in "building doors and windows hardware hinge (hinge)" (JG/T 125-2007), the terms and definitions, classification and marking, requirements, test methods, the inspection rules and signs are clearly stipulated.
(1) appearance, corrosion resistance, film thickness and adhesion should comply with JG/T 212-2007 regulations.
(2) mechanical performance requirements
to be honest, the hinge on aluminum alloy doors and windows is so capable of tossing and tossing, which is inseparable from its strict requirements on mechanical properties.
So what are these strict requirements? Please see below.
① static load
hinge (hinge) bearing static load refers to the upper hinge (hinge) bearing static load: requiring the upper hinge (hinge) of the door to bear static load (tension) and the upper hinge (hinge) of the window bearing static load (tension) shall meet the relevant provisions in Table 5-2 and Table 5-3 respectively.
In addition, the bearing torque should also be mentioned. After a group of hinges (hinges) bear the actual bearing mass and attach the external force of the suspension end, the change value of the vertical position of the free end of the door (window) fan should not be greater than 1.5mm, the test piece has no deformation or damage and can be opened and closed normally.
② turning effort
hinge (hinge) turning effort should not be greater than 40N.
② repeated opening and closing
the requirement of repeated opening and closing is that according to the actual bearing quality, after door hinge (hinge) is repeatedly opened and closed for 100000 times, after window hinge (hinge) is repeatedly opened and closed for 25000 times, the change value of the vertical position of the free end of the door and window fan should not be greater than 2mm, and there is no serious deformation or damage to the test piece.
③ hanging end lifting weight
after the suspension lifting test, the doors and windows are required not to fall off.
④ impact hole
it means that through the free fall of heavy objects, the door and window fan is tested against the hole. After repeated three times, the door and window fan must not fall off.
⑤ impact obstacles
similar to the impact hole test, here refers to the test of door and window fan impact obstacles through the free fall of heavy objects. After repeated three times, the door and window fan must not fall off.
The sword front is honed out, and the plum blossom fragrance comes from bitter cold.
Only by passing the above tests based on strict requirements can hinge (hinge) be truly qualified hinge.
What needs to be mentioned here is that hinge and hinge belong to similar products in the national standard, but in general concept, hinge usually refers to two-piece metal parts used for doors and windows; the difference of hinge is that it has the function of spring and positioning.
As a metal blade connected to the door, window, box, cabinet and other fan walls in hardware, we can start from the following points when purchasing:
workmanship
when we enter the store to select hinge (hinge) products, observe their appearance with naked eyes, which can be used as the basis for judging their comfort.
Generally speaking, products with good workmanship have beautiful surface, exquisite details and small gap, which makes them more reliable to use.
Taking the door leaf bearing hinge as an example, the well-made hinge bearings can intuitively realize their smoothness, mute and durability in daily use. However, if it is an inferior product without ball bearings, the materials are often cheap and the service life is short.
Material
when selecting hinge (hinge), selecting according to its material and environmental characteristics can also reduce some detours for purchase.
Copper hinge has the characteristics of antibacterial and corrosion resistance, and is usually used in sanitary ware; Steel hinge is relatively easy to rust and not suitable for use in humid environment; Stainless steel hinge has better appearance and functionality, which is a common choice for many consumers.
However, sometimes some manufacturers on the market will use ordinary steel hinges as stainless steel hinges, and the surface is coated to achieve the purpose of being fake, which also requires buyers to pay attention to distinguish.
Component
we know that hinge (hinge) can be applied to different scenarios according to the material. At present, the main materials commonly used in the market are aluminum, copper, steel, stainless steel and plastic, etc, among them, the use range of plastic hinge is limited, and in general, metal texture is still the main one.
We should pay attention to identifying products that cut corners on the market.
This kind of inferior product is the easiest to find problems in thickness. The nominal value is 3mm, which actually shrinks to 2.5mm. However, those who claim to have a thickness of 2.5mm do not even reach 1.5mm, because the strength and rigidity of this product are not standardized, consumers often have hidden safety risks for their lives when they buy it at home. Therefore, we may as well pay attention to the weight of hinge and hinge after buying it. The quality is thick, compliance is the first glare
conclusion
today's introduction to aluminum alloy doors and windows hinge is about this. This article will help you have a preliminary understanding of hinge.
In fact, hinges not only love "tossing", but also can withstand "tossing". The better the quality of hinges (hinges), the more excellent they can witness in the accumulated tossing.
