door and window hardware, the first thing that ordinary people want is door and window handle and link sealing strip. In fact, in addition to these well-known door and window hardware accessories, there are some hardware that few people do not know but are very important, it is the door and window dagger and the single electric lock. As the two most important hardware parts of the door and window, it is very important, but usually people don't know its role, do you know?
I. Dagger
as a key part of the opening of dagger, Casement is related to whether the Casement can be successfully opened and the stability of the Casement. It is an important hardware accessory that plays a role in the normal switch and positioning of the Casement. Dagger share? Tough? Dam coal? Is there a dam? Screw? /p>
(1) dagger self-positioning force
? Tough? Can I take a rose curtain? Cow? Read the plaque? How about bad Tuo? 0N, otherwise, the Casement switch positioning capability becomes unstable, which will cause difficulties in opening and closing windows.
(2) window opening and closing force
? Tough? Is there a dam? Sodium sodium, sodium, sodium, sodium, and cymbal?? 0N, within the Casement opening range of 0-300mm, the opening and closing force of the dagger commonly used to open the upper suspension window should not exceed 40N.
(3) door and window gap
when Casement is in the closed state, under the action of external force, Ann? The change value of the sealing gap between the fan and frame at the dagger of the corner of the window should not exceed 0.5mm.
(4) rigidity of dagger
the judgment of rigidity of dagger should be judged according to the experiment, that is, Casement suffer different forces in three different parts to distinguish whether the performance of Dagger meets the requirements.
2. Single-point lock
single-point lock is suitable for aluminium alloy sliding window, indoor sliding door, etc., including semicircle lock, Hook Lock, etc.
(1) strength of locking parts
the locking parts of the single-point lock should not be destroyed after being under the pressure of 400N. The operating force of the single-point lock should be less than 20N, which is a qualified single-point lock.
(2) After 15000 repeated experiments, the single-point lock should be kept in normal use, which is a qualified lock.
In addition to some common hardware accessories, the two most important hardware parts of this door and window are door and window dagger and single electric lock device. These accessories are not known by ordinary people, but they are the key to the composition of doors and windows.
