What is an indoor handle lock? The indoor handle lock refers to the front and rear panels, the lock body and the lock head, and a switch square hole is arranged on the lock body, and a square shaft is arranged in the square hole of the switch, and the two ends of the square shaft are respectively connected with the inner and outer handles. The square shaft is composed of a metal sheet and a non-metal sheet, and the non-metal sheet is disposed between the two metal sheets, and the non-metal sheet may be a plastic sheet, a rubber sheet or the like. Since the square shaft adopts a method of providing a non-metal piece between the upper and lower metal pieces, when the square shaft is connected with the handle, the screw is directly connected between the two metal pieces through the screw hole of the handle, and The non-metal piece connection on the square shaft not only allows for tighter fixing, but also does not cause the square shaft and the handle to fall off after a period of use. Different from the commercial hardware standard, the civilian hardware accessories have been used for a long time, and it is prone to many problems here and there. Especially the door locks, such high-load operation parts, have a long service life, and it is inevitable that there will be some trouble. It is often found that some users and friends, the damage of the door locks in the home is often caused by improper use or maintenance. Do not use a damp cloth to wipe the door lock frequently. Otherwise, it is easy to enter the inside of the accessory. If the accessory is rusty, it will be easy to malfunction! In order to avoid the door handle touching the wall, it is best to install the door. The door is directly installed on the door. And free to control the opening angle. Will not damage the ground and the wall. Some things to pay attention to in the maintenance of door locks: First, do not use lubricants casually Some friends tend to drop some lubricity into the keyhole when the door locks are bun or tight. This way, the door locks may be smooth, but because the oil is easy to stick, the keyholes are later. It is easy to accumulate dust slowly and form oil putty, which makes the door lock more prone to failure. The correct solution: cut some pencil pieces or some candle pieces, blow them into the lock core through a thin tube, and then insert the key repeatedly to rotate several times. Second, do not force the key to open the door can not be too violent In some cases, due to the gravity of the door leaf, or the cause of the door leaf, the door leaf sinks, and the door lock or door opening is not smooth. At this time, it is often difficult to open the door with a key and lock the door. At this time, do not forcibly twist the key, so as not to break the key and increase trouble. If you really can't solve it yourself, don't act violently. You can ask the master who is eager to unlock the lock, or call the collar to help. The correct solution: you should first check the reason. If the door leaf sinks due to loose leaf, the loose leaf should be fastened with screws. If the door frame is deformed or its cause is unrecoverable, start with the door frame and expand the lock tongue accordingly, so that the door lock switch door can resume normal and smooth. We are a manufacture of complete Tool Set in China. Complete Socket Tool Set, complete Hand Tool Set, complete tool kits with different kinds of tools. We also provide customer OEM services with different kinds of complete tool set with customer logo. Please contact us if any needs or questions on tool kits. Complete Tool Set,Complete Tool Box Sets,Full Tool Kit Set,Complete Tool Kits SUZHOU NEWSTAR HARDWARE CO.,LTD. , https://www.newstarhardware.com