Novel indoor door opening and closing device for buildings

Abstract

The invention discloses a novel indoor door opening and closing device for buildings. The novel indoor door opening and closing device is characterized in that an upper guide rail and a lower guide rail are arranged on the indoor door opening and closing device; the upper guide rail and the lower guide rail are fixedly arranged at the upper position and the lower position of a wall in parallel; rolling pulleys are arranged on the top and the bottom of a door; the door is arranged between the upper guide rail and the lower guide rail by the rolling pulleys; four positioning pin shafts are arranged, wherein two positioning pin shafts are fixedly arranged on the wall above the upper guide rail; the connecting line of the two positioning pin shafts above the upper guide rail is parallel to the upper guide rail and the lower guide rail; the other two positioning pin shafts are fixedly arranged at the front surface of the door; the connecting line of the two positioning pin shafts arranged on the door is parallel to the connecting line of the two positioning pin shafts arranged above the upper guide rail, and the distance of the connecting lines is equal; two identical spring steel plates are arranged; and the two ends of each spring steel plate are correspondingly hinged on one positioning pin shaft above the upper guide rail and the positioning pin shaft on the door.

Description

technical field [0001] The invention relates to a door opening and closing device, in particular to a novel indoor door opening and closing device of a building, which belongs to the technical field of decoration. Background technique [0002] At present, there are various types of devices for opening and closing doors in buildings, including the most primitive hinges, split hinges and double-insert hinges, and fully automatic door opening devices and sliding door devices installed in indoor opening and closing doors. , in the above-mentioned sliding door devices, there are common problems: although the way of using hinges is convenient and flexible, it takes a long time to open and close the door, and it is easy to automatically return to the phenomenon after opening the door. Using a fully automatic door opening device has complex structure, high cost, and easy damage. Contents of the invention [0003] The purpose of the present invention is to provide a new type of in...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a new type of indoor opening and closing device for buildings. This opening and closing device has the advantages of simple structure, low cost, and fast door opening and closing speed, and overcomes the disadvantages of using hinges to open and close the existing opening and closing doors. It is easy to return to the closing phenomenon and adopts the defects of complex structure, high cost and easy damage of the automatic closing and opening device

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