Door handle mechanism is an important consideration while designing door handles

A door handle or knob is a simple handle usually fastened to a door with a lever or pull. Door handles are available on all kinds of doors including internal and external doors of commercial and residential properties, cabinet doors, closet doors and car doors. There are various styles of door handle available, based upon the correct usage. The material of the knob or handle differs also depending upon the usage. Sliding handles are used in exterior doors to handle with extension spring are used in internal and bedroom doors.

Sliding door handles are made of different materials such as aluminum, stainless steel, brass or chrome-plated metal. They are designed for easy sliding movement of doors. Extension spring door handles are generally made up of aluminum, brass or chrome-plated material. Spring loaded handles offer smooth operation, comfort and security. They can also be used for multiple purposes such as holding a flashlight, purse or keys.

Door handle mechanism is an important consideration while designing door handles. The mechanism has to provide sufficient stiffness or rigidity so that it can hold a heavy door handle without any sideways movement. The most common mechanism is a pinion or a rack and pinion arrangement. Door handle pins are usually formed either out of metal or plastic. Some other materials that are used as door handles include glass, stone, ivory, wood, plastic, leather and fiber glass.

Door handle locks are used at the time of opening or closing of a door. A lock provides added protection to your property and is considered to be the most secure component of the door handle mechanism. The most commonly used type of lock is the single-cylinder lock that can only be opened by using a key fitted into a small hole in the center of the lock. There are also double-cylinder locks that require use of a key and a pin to open. Security holes are often drilled into the lock to allow the use of torsion wrench.

The door handle is fastened to the backplate by a notice system. The backplate is usually made of cast iron or stainless steel. To ensure proper tension, the backplate may be adjusted during manufacturing. The spring cylinder serves as the pull unit for the door handle and the back plate adds tension to the lock mechanism.

Door knobs have come a long way from their simple and rudimentary beginnings. Today's door handles are sophisticated and decorative. They add more functionality to doors by adding functionality, style and safety. Door knobs are available in a wide variety of finishes to suit both your taste and the theme of your home. There are also door handles that can be mounted in on wall or just to the floor.