铰链发出声响

不知道大家有没有过这样的困扰：开、合防盗门时，铰链会发出声响，如果正好有人在休息，就难免会被打扰。铰链会响可能是因为空气潮湿或是安装防盗门时铰链盒内进入了灰尘，导致铰链与铰链销摩擦发出了声音。

调节一下铰链螺丝使铰链插销在同一轴线上即可。例如将门框中间铰链的两颗螺丝适当放松。在铰链销上注入液体润滑油或黄油。切勿使用物油或植物油(诸如猪油、豆油等。

门锁发涩、发紧

一般人在门锁出现发涩、或发紧的时候，往往喜欢向锁眼里滴上一些润滑油，这样，可能立马使门锁通体顺滑了。殊不知，因为油易黏灰，以后锁眼里会容易慢慢积存灰尘，而形成油腻子，这样反而使得门锁更容易出现故障了。

削一些铅笔碎末或一些蜡烛碎末，通过细管吹入锁芯内部，然后插入钥匙反复转动数次即可。

开、关门不顺畅

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由于门扇自身重力原因，或门活页原因，导致门扇下沉，有时候会出现锁门或开门不顺畅等现象。这个时候用钥匙开门、锁门往往非常吃力。此时，不要强行扭动钥匙，以免掰断钥匙，增加麻烦。

如果是因活页松动导致门扇下沉，应将松动的活页用螺丝固定紧即可。若是门框变形或其原因导致不可恢复的，可从门框入手，将锁舌相应扩充，这样，门锁开关门就可以恢复正常流畅了。