The security door must be closed with great force

After the door lock is installed, if it is difficult to close the door, it should be checked.

1。Whether the gap between the door leaf and the door frame has reached a reasonable gap, the door can not be forcibly closed, which will lead to a shortened service life after long-term use. Sometimes due to the nature of the door leaf, there will be a phenomenon of cold shrinkage and heat expansion that is loose in winter and tight in summer, at this time, the gap between the door seams should be adjusted to avoid forced opening and closing, which will affect the normal service life of the door lock.

It is best to find a professional to adjust the gap between the door cracks).

2。Whether the friction between the deadbolt and the keyhole is too large, due to long-term use or moisture, it may cause rust or deformation, so the friction between the deadbolt and the keyhole becomes large, then just use a pencil to paint the place where the deadbolt and the keyhole come into contact. (The graphite in the pencil is lubricating).

Hope it helps.

Check whether the "tongue" on the door lock is not in good alignment with the gap on the door frame? This problem occurs when it has been used for a long time or is not installed properly.

Use a file to repair the deviation on the door frame.

The problem of the door. Let's see if it's a lock problem, and if so, put some oil. If you don't have it, use cooking oil.

Brother, the approximate reasons for this problem are as follows, 1The door leaf is not on the vertical line, which is more troublesome to repair, 2As the upstairs brother said, check whether the gap between the deadbolt and the door frame lap is appropriate, if the gap is too small, use a frustration knife to grind down the lap interface on the door frame

A common little annoyance, easy to solve, keep a grease at home for the removal of rust and lubrication of hinges and hinges.

Macalon and other well-known hinge brands use tiger head hotolube or Kruber hinge grease, colorless and transparent, good adhesion and good durability. There is a 130-gram tube package in the leopard, which is also suitable for sliding door slides, etc. Apply grease directly to the hinge and it will slowly penetrate into the hinge.

The maintenance interval is four to six months.

It is not advisable to use lubricating oil or ordinary butter, which is easy to lose or freeze at low temperature, and will volatilize harmful odors. Vegetable oil quickly rancid, develops odors and loses its lubricating effect. ,.