In our daily life, we will inevitably encounter some cases where the door lock cannot be opened. Sometimes the key is forgotten at home, and sometimes the key is used to open the door. If it is the latter situation, it will be more depressing. Everyone will hesitate to unlock the door lock, in fact, there are many reasons why the door lock cannot be opened. Sometimes, for a change, the door lock may be opened. However, if the door lock is broken, you will need to find a maintenance master. Today we have a piece of research to study how the door lock cannot be opened . The inner and outer handles (lock handles) are spherical and are used for door locks installed on wooden doors, steel doors, aluminum alloy doors and plastic doors. The main feature is that it can be locked from the inside and cannot be opened from the outside. More applications are room door locks, bathroom locks, toilet locks, etc., because these occasions are related to privacy, from the outside can not be free to open the door, but in the room can be opened at will, to avoid the lock out. The door lock structure diagram (bedroom door lock structure) is actually a round lock. The emergency treatment is done for the case where the foreign matter stuck in the door lock causes the door lock to fail to open. In the general door lock, foreign matter is stuck inside, and it is difficult to open it with a key or a finger. If this is the case, we must find ways to open the lock. First, determine whether the door is open or open. If it is open to the inside, pull it inwards. If it is open to the outside, push it hard. At this time we need a knife, a sharp, thin knife. The sharper the knife edge, the better. First we must press the door outside the toilet door, and the middle part that can be shrunk is called the lock shaft. The lock shaft should not come into contact with the lock groove to reduce friction. When inserting the lock groove through the knife, it can withstand the lock shaft and force it in the free direction of the lock shaft. It may not be able to open once or twice, or try more. Maybe it will be opened. Generally, because the external force causes the door lock to fail to open, it may be because of the reason that the inside of the lock tongue is disengaged, or because the bolt has distorted the shape and the screw that holds the bolt is detached, resulting in the door getting stuck, and the exit is not going out. Into the entrance can not come, in this case, the best emergency treatment is to find the tongue, from the inside of the door to pull back the screw to pull out positioning. This method is limited to cases where the door lock cannot be opened due to foreign material. The first is to open the door lock yourself when the door lock cannot be opened. Then, in addition to this, when various methods are used and the door lock cannot be unlocked, you can ask a professional unlocking company to unlock it. Such unlocking companies generally have specialized techniques and unlocking techniques. Just spend money on your own pockets. Please unlock the locksmith and unlock it with the company. It may be the same in behavior, but there are still some differences in its nature. The professional unlocking company can professionally address intractable diseases caused by various door locks. It is an integrated realization, but the locksmith is a simple problem that cannot be opened for simple door locks, and is an individualized realization. Summary: What can I do if the door lock cannot be opened? This is a specific analysis of specific issues. If it is a minor fault, it can be opened. If there is a problem with the quality of the lock, then it is necessary to help unlock the master. Regarding how to do the door lock , I will introduce it here, I hope to help you, more decoration information, do this site, so stay tuned. Door lock
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What to do if the door lock does not open - the internal structure of the door: What can I do if the door lock cannot be opened?--Method 1 , 
What to do if the door lock cannot be opened--Method 2 , What can I do if I don't open the door lock?--Method 3 , 
What to do if the door lock cannot be opened - Method 4, What to do if the door lock cannot be opened - Method 5 