The Origin Of Automatic Doors

The birth of the first automatic door

Automatic doors are one of the most commonly used inventions in business and residential settings. The first automatic door is believed to have been invented by Hiero, an ancient Greek mathematician who created many innovative inventions that are considered very eccentric. Examples include the first vending machine, the steam-powered engine and the wind turbine. Most astoundingly, he invented an automatic door for temples.

The idea was that the temple door should open automatically when the fire was lit and close automatically when the fire was extinguished. By lighting the fire on the ground at the altar in front of the temple, heat would build up and create pressure in a welded container under the temple. The liquid inside the container would pass through a hose into another container suspended from the ceiling and connected to the underground doorpost of the temple door. With the weight of the water increasing, the door would magically open for the audience by dragging the pulley rope and slowly pulling the rope attached to the doorpost. When the flame goes out and the heat dissipates, the liquid will be sucked back into the first container, the second container will become lighter, and the well-balanced counterweight will pull in the other direction, closing the door behind it. It was an amazing invention, however, the idea was soon shed as many people thought it gave burglars an easier opportunity to open the temple.

 Retrofit and use of automatic doors

The concept was later redesigned and adapted by a pair of American engineers and was first used in 1931 when they were mainly used in military warehouses, important factories, for fire prevention, bullet-proof and easy to open. 1950s, automatic doors are increasingly widely used, forming mass production. Many large banks, hotels, hotels, buildings to improve the level of class and service, in order to match the high level of the building, competing to use automatic doors, promoting the rapid development of automatic doors. In the late twenties, the United States, the opening of the supermarket, automatic doors began to be used. 1930, the United States Stanley took the lead in the world's first automatic door (this history is recorded in the New York Times). By 1962, the electrical type had begun to appear, after which the field of automatic door technology increased every year along with the construction of cities. The real mass production and application came after the 70s. Currently the main producers of automatic doors are developed countries such as the United States, Germany, Italy, the Netherlands and Japan. At the beginning, with the supply of power to the building with motor speed control is difficult, had to carry out oil pressure, air pressure speed control, conversion but because of the low efficiency of energy use, however, along with the development of electrical control technology, electrical control technology has matured, direct control of the motor electrical automatic doors gradually become mainstream. For example: a variety of automatic special doors with identifiable control, such as: induction automatic doors (infrared induction, microwave induction, touch induction, foot induction), card automatic doors, etc..

There are three main methods of operation of modern automatic doors.

 Automatic doors began to be used on buildings after the twentieth century.

There are three main methods of operation of modern automatic doors.

① Foot pedal type: A pressure switch is installed under the pedal.

② Photoelectric beam type: A light beam emitting device and a photoelectric sensing device are installed near the door.

③Button method: Pressing a button similar to a switch by hand to make the door open. Automatic doors open and close the door by sliding, hinging or folding. In order to prevent theft, must also be equipped with special equipment, such as automatic doors for families need to be equipped with visitor identification devices or TV monitors, etc., to strictly limit the personnel outside the home. Automatic doors in shopping malls, hotels, restaurants, airports, stations, banks and other occasions have been widely used.

Automatic opening and closing controlled by various signals, and has a running device, induction device and door body parts of the general term. (Induction retractable doors see outdoor doors.)

 Automatic Door in China

The application of automatic doors in China started late, the first is mainly the introduction of foreign production technology and equipment manufacturing, to meet the growing market demand, but with the development of progress, the current domestic technical force and production capacity to manufacture their own design of automatic doors. 80s in the middle of the automatic door project has been rapid development, and gradually formed an independent industry.

Why HEINDA Automatic Doors

Haida Door Control Co., Ltd. is a group of companies specializing in the production of hydraulic hardware door control and intelligent induction door control series, integrating design and development, manufacturing, sales and service.

Haida Door Control Co., Ltd. is the main drafting unit of the standard of "Automatic Smooth Door Unit" and "Indoor Induction Door". Haida induction door from the development of 20 years of history, good market reputation, stable quality. The sales volume of induction doors is one of the best in the country, with a monthly output of more than 10,000 units, which have been exported to 72 countries and regions. We have a complete induction door industry chain, controller, motor, sensor, remote control, hardware hanger and even screw accessories are developed and produced by ourselves. And we have national CNAS laboratory with the most complete testing equipment for raw materials, parts and finished products. Product quality is excellent, welcome to buy Haida products!