Fire box hidden door structure

Abstract

The invention relates to a fire box hidden door structure which comprises a U-type rotating shaft transmission device, two sector tri-petal type hinge devices and hyperbolic door guiding and limiting devices. The two sector tri-petal type hinge devices are arranged on the two sides of the U-type rotating shaft transmission device through a rotating shaft respectively to achieve eccentric moving and hyperbolic opening of a door. The hyperbolic door guiding and limiting devices comprise two wedge-shaped fixing blocks, wherein one hyperbolic door guiding and limiting device is fixed between the fire box hidden door and the rotating shaft, the hyperbolic door guiding and limiting device stops rotating when the door is opened to 180 degrees for the second time, and the other hyperbolic door guiding and limiting device is fixed inside the U-type rotating shaft transmission device to control a door leaf not to collide with an outer fade facing when the door leaf is opened for the first time. The fire box hidden door structure widens the applied range of a fire box, eccentric moving and hyperbolic opening are achieved, and thus the door leaf can be opened to 180 degrees.

Description

technical field [0001] The present invention relates to a door structure, in particular to a fire box concealed door which can open a heavy fire hydrant door leaf at a large angle, expands the use range of the fire box, realizes eccentric movement, hyperbolic opening, and enables the door leaf to be opened to 180 degrees. structure. Background technique [0002] The indoor fire hydrant box is an indispensable fire-fighting tool in public buildings. The indoor fire hydrant box is composed of a standard box (iron sheet) and a glass door frame, embedded in the building wall or exposed indoors. [0003] However, in some high-end hotels, shopping malls and other places, thick and heavy materials such as large stones are often used as wall decorations because of the overall decoration effect. It is composed of the load-bearing steel frame of the stone wall, the connecting piece, the rotating shaft, the closed decorative surface of the frame, and the decorative surface of stone, f...

AI Technical Summary

Problems solved by technology

[0007] The design of the hidden door of the indoor fire hydrant box solves these problems well, but there are quite a lot of potential safety hazards in the traditional "vertical pin shaft" of the hidden door of the fire box, for example: 1. The opening angle of the hidden door of the fire box is limited, and generally only Open to 90 degrees, in the fire emergency state, firefighters are limited to operate fire-fighting equipment within a range of less than 90 degrees, which affects the efficiency of use; 2. Such doors installed in public passages are in the emergency opening state, which will seriously affect the safety of the passage Evacuate the space, causing collisions, falls, stampedes and other accidents

3. The heavy fire trap door is easy to deform, and cannot be fully opened when we use it, and the heavy weight makes it difficult to open, etc.

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