The inner door lock refers to a front and rear panel, a lock body and a lock head.A switch square hole is arranged on the lock body, and a square shaft is arranged in the switch square hole. The two ends of the square shaft are respectively connected with the inside and outside holding hands. The square axis is composed of metal sheet and non-metal sheet. A nonmetallic sheet is arranged between two pieces of metal, and a nonmetallic sheet may be a plastic sheet, a rubber sheet, or other material. Because the square axis is arranged in a manner between the upper and lower metal sheets, when the square axis is connected to the handle, the screws are connected directly between the two pieces of metal through the screw holes in the holder and are connected to the non-metallic plates on the square axis, which not only can be fastened more tightly, but also can not make the square axis and the handle fall off after use.
And according to the different function,the inner door handle can be classified into many kinds:
1. The indoor handle lock is divided into split lock, conjoined lock and three-bar fast loading lock.
2. According to the pattern,the in door lock handle is divided into European style,Chinese style and the modern style.
3. According to the materials,the indoor handle lock is divided into zinc alloy door handle,stainless steel handle lock,copper handle lock,the aluminum handle lock.
The most commonly used clasp core,has two kinds of four specifications MM70, small 70, big 68, small 68.And generally have aluminum alloy, zinc alloy, copper as the materials for core.
Thus,how to maintain and install it.One,please don’t use the wet cloth to wipe the door handle lock.If not,the hardware inside it will be rusty.In order to avoid the door handle to hit the wall,it is better to install the door stop firstly.The door stop can be installed onto the door directly,and it can control the opening angle of the door.