[Hardware lock] How to replace the lock core of the old security door

Old-fashioned anti-theft door locks are relatively early security door locks, and the backwardness of anti-theft performance has been eliminated by more and more families. However, there are many rental houses that use the old-style locks used in the following pictures. Some of our renters are in need of safety to replace the door locks. Here is how to change the old-fashioned anti-theft door locks.

How to change the lock core of the old security door

First, the old-fashioned security door lock heart classification

According to the shape of different keyholes, it can be divided into various types, and the anti-theft force level is "one" shape, "ten" shape, round shape, crescent type and so on.

Crescent shape: The tooth position is on both sides of the key, and the anti-theft performance is general.

Ring: ring keyhole, can not have side slots, especially the two sides of the slot with a 180 degree angle, with side slots, can be regarded as a figure, these lock core anti-theft, because of the progress of the tool, only to the extent The difference is not a qualitative difference.

Idling lock: The keyholes are commonly seen in the shape of a "ten", crescent-shaped, etc.

Blade lock: Carefully designed for blade shape and spatial position.

According to the quality classification, there are stainless steel coated copper, pure copper, zinc alloy coated copper, iron-clad copper, aluminum alloy coated copper, etc. The lock core material is made of zinc alloy with low strength and brittleness. The best choice of steel is made by heat treatment and hardening. This can resist sputum and resist pliers.

Second, how to change the old-fashioned anti-theft door lock

Step 1: Change the anti-theft door lock core: We must first prepare the corresponding tools: a plum screwdriver, a new lock cylinder with a matching size, and a hammer. Then we should use a Torx screwdriver to screw down the two screws on the top and bottom of the hand panel. Then screw off the screws on both sides of the lock burglar sleeve and remove the lock cap. Note: Do not screw the two screws too tightly during installation. When you press the anti-theft shell, you should have a sense of activity.

Step 2: Change the anti-theft door lock core: Remove the lock core anti-theft cover. (Note: the same method is used for installation.) When you remove the lock, the core is locked, but when you screw it off or lock it, you should use a hammer to gently knock around the lock. Hit, knowing to take out the old lock cylinder.

Step 3: Change the anti-theft door lock core: After the operation, the lock core will be completely disassembled. Now, we have to start to install the new lock cylinder. First insert the safety plug, then start to close the inner and outer handles. When closing, it is best to find someone to hold the outer handle, which will help you. The screw holes of the inner and outer handles must be aligned before the screws can be rotated.

Change the anti-theft door lock core Step 4: When inserting the screw, it must be inserted vertically. If the nut is not aligned, use your finger to gently shake the screw. Because the screw head is pointed, it has a good feeling and can help. You quickly do it. If this step is completed successfully, we will complete the basic step of the lock cylinder. At this time, we should carefully check whether the door lock can be used normally.

The idling lock cylinder is a relatively cost-effective old security door lock cylinder. The key or other object protrudes into the lock cylinder. Even the other lock keys of the same model can only rotate the lock core freely, but can not open the lock, the idling lock cylinder Still have a certain degree of security. The lock cylinder is especially important in the safety of old-fashioned anti-theft door locks.

Editor in charge: Liu Jiehui

Carbon Steel Four Way

Carbon Steel Cross,Equal Carbon Steel Pipe Cross,Equal Butt Welding Connection Cross,Forged Malleable Casting Iron Cross

Cangzhou Youlong Pipe Fitting Manufacturing Co., LTD , https://www.youlongpipe.com