Access door

Abstract

The invention discloses an access door. The access door comprises a passageway. A rotating shaft, a first door leaf and a second door leaf are arranged on the passageway, and the first door leaf or the second door leaf rotates along with the rotating shaft and can horizontally move on the rotating shaft. When the first door leaf blocks the passageway, the first door leaf rotates along with the rotating shaft but does not horizontally move, and the second door leaf rotates along with the rotating shaft and can horizontally move. When the second door leaf blocks the passageway, the second door leaf rotates along with the rotating shaft but does not move horizontally, and the first door leaf rotates along with the rotating shaft and can move horizontally. The passageway is always blocked by the first door leaf or the second door leaf. The access door can always keep the passageway blocked during one-way or two-way passing, the number of door leaves is small, the needed passageway width issmall, the effective passageway proportion is high, the structure is simple and practical, and the windproof effect can be easily achieved.

Description

technical field [0001] The invention relates to a door, in particular to an access door arranged on an aisle to control passage. Background technique [0002] In places such as many stations, airports and other public places, access doors will be set on the access passages. Some doors only allow one-way traffic, and some doors allow two-way traffic. In some one-way doors, in order to meet the requirements of one-way traffic, the cross bars spaced apart from each other are arranged into a comb-shaped door leaf, and more than two (usually four) door leaves are installed on the shaft for one-way rotation, and then Use a row of fixed comb-toothed door leaves to intersect with the rotating door leaves to prevent reverse traffic, which cannot prevent air circulation, has no windproof function, and the passage width is large, and the useless passage (that is, the space occupied by the fixed door leaves) occupies High ratio requires more revolving door leaves and consumes a certain...

AI Technical Summary

Problems solved by technology

In some one-way doors, in order to meet the requirements of one-way traffic, the cross bars spaced apart from each other are arranged into a comb-shaped door leaf, and more than two (usually four) door leaves are installed on the shaft for one-way rotation, and then Use a row of fixed comb-toothed door leaves to intersect with the rotating door leaves to prevent reverse traffic, which cannot prevent air circulation, has no windproof function, and the passage width is large, and the useless passage (that is, the space occupied by the fixed door leaves) occupies High ratio requires more revolving door leaves and consumes a certain amount of space. Other one-way doors have the disadvantage of complex structure; for two-way doors, airtight door leaves can be used, but in order to always block the passage, more than two door leaves are also required (generally four), and the width of the passage requires two door leaf widths, which is not practical for some occasions where only narrow passages can be set

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