Civil air defense door with movable threshold

Abstract

The utility model discloses a movable threshold civil air defense door which comprises a door frame and a door plate, and the side wall of one side of the door plate is rotationally connected to the inner wall of the door frame. The bottom of the threshold is rotationally connected to the side wall of the door frame, and the threshold can rotate relative to the door frame, so that the movable threshold civil air defense door has a sealing state that the door frame is in a vertical position and a passing state that the threshold is in a horizontal position; the threshold installation efficiency can be effectively improved.

Description

Technical Field

[0001] This utility model belongs to the field of civil defense door technology, and in particular relates to a civil defense door with a movable threshold. Background Technology

[0002] Civil defense doors are the doors at the entrances and exits of civil defense projects. Civil defense doors are classified in a relatively clear manner, including ordinary single and double-leaf protective airtight doors and airtight doors, as well as single and double-leaf protective airtight doors and airtight doors with movable thresholds, and other types of civil defense equipment.

[0003] The characteristic of movable thresholds is that no threshold is installed during normal times, the ground is flat, which facilitates the passage of people and vehicles, and the threshold can be quickly installed in wartime to meet the requirements of protection and airtightness, and quickly realize the conversion between peacetime and wartime functions. This type of door is suitable for the entrances and exits of civil defense projects such as underground shopping malls, hospitals, warehouses, and underground parking garages that combine peacetime and wartime functions.

[0004] Normally, movable door thresholds are fixed to the door panel with screws. In the event of war, the movable door threshold is removed and installed on the ground. This installation method greatly increases the time required to install the movable door threshold, resulting in low installation efficiency. Utility Model Content

[0005] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0006] In order to overcome the shortcomings of the prior art, this utility model provides a fire-resistant door with a movable threshold.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a retractable threshold air defense door, including a door frame and a door panel, one side wall of the door panel being rotatably connected to the inner wall of the door frame; the retractable threshold air defense door also includes a threshold, the bottom of which is rotatably connected to the side wall of the door frame, and the threshold can rotate relative to the door frame so that the retractable threshold air defense door has a sealed state with the door frame in a vertical position and a passage state with the threshold in a horizontal position.

[0008] Furthermore, a first connecting shaft is provided on the side wall of the door panel, and a first connecting groove corresponding to the first connecting shaft is provided on the threshold.

[0009] Furthermore, a first slider is provided on the side wall of the threshold, and a first groove is provided on the side wall of the threshold for the first slider to move. The first groove has an arc-shaped structure.

[0010] Furthermore, the threshold is provided with a first movable groove, the first movable groove is provided with a rotating wheel, the rotating wheel is provided with an annular groove, a steel wire rope is wound in the annular groove, and one end of the steel wire rope is fixed to the first slider.

[0011] Furthermore, the rotary wheel is equipped with multiple paddles that extend from the first movable slot.

[0012] Furthermore, the rotating wheel is provided with a second connecting shaft, and the side wall of the first movable groove is provided with a second connecting groove, and the second connecting shaft is inserted into the second connecting groove.

[0013] Furthermore, a cavity is provided on the side wall of the second connecting groove, a fixing block is provided inside the cavity, a first spring and a connecting rod are provided on the fixing block, the first spring abuts against the inner wall of the cavity, the connecting rod passes through the cavity, and a handle is provided on the connecting rod.

[0014] Furthermore, a second movable groove is provided on the side wall of the cavity, a stop block is provided in the second movable groove, a second spring and a push plate are provided on the stop block, one end of the second spring is fixed to the inner wall of the second movable groove, and the push plate extends out from the second movable groove; a notch corresponding to the stop block is provided on the fixed block.

[0015] Furthermore, the threshold is provided with an abutment plate, the bottom of the abutment plate is provided with multiple second sliders, and the threshold is provided with multiple second grooves for the second sliders to move.

[0016] Furthermore, a sealing strip made of rubber is provided at the bottom of the threshold.

[0017] The advantage of this utility model is that it provides a flexible threshold security door that improves installation efficiency. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0019] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0020] In the attached diagram:

[0021] Figure 1 This is a structural schematic diagram of a fire door with a movable threshold in one embodiment of the present invention.

[0022] Figure 2 for Figure 1 A cross-sectional view of the rollers of the movable threshold security door in the illustrated embodiment.

[0023] Figure 3 for Figure 2 Enlarged view of point A in the image.

[0024] Figure 4 for Figure 1A cross-sectional view of the fixing block of the movable threshold air defense door in the illustrated embodiment.

[0025] Figure 5 for Figure 4 Enlarged view of point B in the image.

[0026] Figure 6 for Figure 1 A cross-sectional view of the second slider of the movable threshold air defense door in the illustrated embodiment.

[0027] Figure 7 for Figure 6 Enlarged view of point C in the image.

[0028] The meanings of the reference numerals in the figure are as follows:

[0029] 101. Door frame; 102. Door handle; 103. Threshold; 104. Abutment plate; 1041. Inclined groove; 105. First slider; 106. First slide groove; 107. Rotary wheel; 1071. Ring groove; 108. Paddle; 109. Steel wire rope; 110. Handle; 111. Push plate; 112. First connecting shaft; 113. Fixing block; 1131. Notch; 114. First spring; 115. Connecting rod; 116. Stop block; 117. Second spring; 118. Second slider; 119. Second slide groove; 120. Sealing strip. Detailed Implementation

[0030] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0031] It should also be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0032] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0033] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0034] The names of messages or information exchanged between multiple devices in the embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of such messages or information.

[0035] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0036] like Figure 1-7 As shown, a movable threshold air-raid shelter door includes a door frame 101 and a door panel. One side wall of the door panel is rotatably connected to the inner wall of the door frame 101. The movable threshold air-raid shelter door also includes a threshold 103. The bottom of the threshold 103 is rotatably connected to the side wall of the door frame 101. The threshold 103 can rotate relative to the door frame 101 so that the movable threshold air-raid shelter door has a sealed state in which the door frame 101 is in a vertical position and a passage state in which the threshold 103 is in a horizontal position.

[0037] Specifically, a first connecting shaft 112 is provided on the side wall of the door panel, and a first connecting groove corresponding to the first connecting shaft 112 is provided on the threshold 103. The first connecting shaft 112 and the first connecting groove are used to realize the rotational connection between the threshold 103 and the door frame 101, so that the threshold 103 is in a horizontally folded state when not in use, which facilitates the entry and exit of vehicles and people.

[0038] A first slider 105 is provided on the side wall of the threshold 103, and a first groove 106 is provided on the side wall of the threshold 103 for the first slider 105 to move. The first groove 106 has an arc-shaped structure. The configuration of the first slider 105 and the first groove 106 serves to guide the rotation of the threshold 103, making the threshold 103 more stable when it rotates to a vertical position. The first groove 106 limits the maximum position of the first slider 105, so that the threshold 103 can only rotate within the range of 0-90 degrees. At the same time, the first groove 106 limits the direction of rotation of the threshold 103, so that the threshold 103 flips outward, saving internal space. When the first slider 105 abuts against the inner wall of the first groove 106, it provides support for the threshold 103, so as to fix the door in a vertical position and improve the stability of the use of the air-raid shelter door.

[0039] Furthermore, the threshold 103 is provided with a first movable groove, in which a rotating wheel 107 is provided, and the rotating wheel 107 is provided with an annular groove 1071. A steel wire rope 109 is wound in the annular groove 1071, and one end of the steel wire rope 109 is fixed to the first slider 105. The rotating wheel 107 is provided with a plurality of paddles 108, which extend from the first movable groove. The first movable groove is located on the side wall of the threshold 103 that is outside the room, so as to facilitate operation inside the room.

[0040] The rotating wheel 107 is provided with a second connecting shaft, and the side wall of the first movable groove is provided with a second connecting groove. The second connecting shaft is inserted into the second connecting groove. The side wall of the second connecting groove is provided with a cavity, and a fixing block 113 is provided in the cavity. The fixing block 113 is provided with a first spring 114 and a connecting rod 115. The first spring 114 abuts against the inner wall of the cavity, and the connecting rod 115 passes through the cavity. The connecting rod 115 is provided with a handle 110. The fixing block 113 is provided with a groove corresponding to the second connecting shaft. The inner wall of the groove is provided with rubber with a high coefficient of friction. When the inner wall of the groove abuts against the side wall of the second connecting shaft, the second connecting shaft is fixed.

[0041] A second movable groove is provided on the side wall of the cavity, and a stop block 116 is provided in the second movable groove. A second spring 117 and a push plate 111 are provided on the stop block 116. One end of the second spring 117 is fixed to the inner wall of the second movable groove, and the push plate 111 extends out from the second movable groove. A notch 1131 corresponding to the stop block 116 is provided on the fixed block 113.

[0042] When the threshold 103 needs to be used, pull the handle 110 away from the threshold 103. The handle 110 moves the fixing block 113, which disengages from the second connecting shaft. After the notch 1131 moves to be aligned with the stop block 116, the stop block 116 enters the cavity and abuts against the inner wall of the notch 1131 to fix the fixing block 113. Push the lever 108 to make the wheel 107 rotate. The rotation of the wheel 107 causes the wire rope 109 to be wound in the annular groove 1071. The wire rope 109 pulls the second slider 118 to move, and the first connecting shaft... The connecting shaft 112 rotates in the first connecting groove, and the second slider 118 enters the second sliding groove 119 and moves along the second sliding groove 119 to one end of the second sliding groove 119, flipping the threshold 103 to a vertical state, quickly completing the installation of the threshold 103; after the threshold 103 is flipped to a vertical state, the push plate 111 is pushed so that the stop block 116 moves into the second movable groove, and the first spring 114 pushes the fixing block 113 to move towards the second connecting shaft, and the groove abuts against the side wall of the second connecting shaft to fix the second connecting shaft, thus fixing the threshold 103 in a vertical state.

[0043] When the threshold 103 is not in use, pull the handle 110 to move it so that the fixing block 113 is disengaged from the second connecting shaft, push the threshold 103 down so that the threshold 103 flips to a horizontal position, and then push the push plate 111 to move it so that the fixing block 113 is reset, making it easier to enter and exit the air defense door.

[0044] Furthermore, the threshold 103 is provided with an abutment plate 104, and the bottom of the abutment plate 104 is provided with multiple second sliders 118. The threshold 103 is provided with multiple second sliding grooves 119 for the second sliders 118 to move. When the threshold 103 is flipped to the vertical position, the door panel closes and abuts against the abutment plate 104. The contact between the door panel and the abutment plate 104 improves the sealing effect of the threshold 103 and the door panel, further enhancing the airtightness of the air-raid shelter door.

[0045] The abutment plate 104 is provided with a sloping groove 1041. After the threshold 103 is lowered, the sloping groove 1041 makes it easier for vehicles to enter the room. At the same time, the second slider 118 and the second sliding groove 119 make the abutment plate 104 rest on the ground after the threshold 103 is lowered, reducing the height of the abutment plate 104 and making it easier for people and vehicles to enter and exit.

[0046] Furthermore, a sealing strip 120 is provided at the bottom of the threshold 103. The sealing strip 120 is made of rubber. When the threshold 103 is flipped to the vertical position, the sealing strip 120 presses against the ground to increase the sealing effect of the air defense door and further improve the reliability of the air defense door.

[0047] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in the embodiments of this disclosure is not limited to the specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A fire-resistant door with a movable threshold, comprising a door frame and a door panel, wherein one side wall of the door panel is rotatably connected to the inner wall of the door frame; characterized in that: The movable threshold air defense door also includes a threshold, the bottom of which is rotatably connected to the side wall of the door frame. The threshold can rotate relative to the door frame so that the movable threshold air defense door has a sealed state with the door frame in a vertical position and a passage state with the threshold in a horizontal position.

2. The fire-resistant door with a movable threshold according to claim 1, characterized in that: The door panel sidewall is provided with a first connecting shaft, and the threshold is provided with a first connecting groove corresponding to the first connecting shaft.

3. The fire-resistant door with a movable threshold according to claim 1, characterized in that: The threshold sidewall is provided with a first slider, and the threshold sidewall is provided with a first groove for the first slider to move, the first groove being an arc-shaped structure.

4. The fire-resistant door with a movable threshold according to claim 3, characterized in that: The threshold is provided with a first movable groove, the first movable groove is provided with a rotating wheel, the rotating wheel is provided with an annular groove, a steel wire rope is wound in the annular groove, and one end of the steel wire rope is fixed to the first slider.

5. The fire-resistant door with a movable threshold according to claim 4, characterized in that: The rotating wheel is provided with multiple paddles, which extend from the first movable slot.

6. The fire-resistant door with a movable threshold according to claim 4, characterized in that: The rotating wheel is provided with a second connecting shaft, and the side wall of the first movable groove is provided with a second connecting groove, and the second connecting shaft is inserted into the second connecting groove.

7. The fire-resistant door with a movable threshold according to claim 6, characterized in that: The second connecting groove has a cavity on its side wall, a fixing block is provided in the cavity, a first spring and a connecting rod are provided on the fixing block, the first spring abuts against the inner wall of the cavity, the connecting rod passes through the cavity, and a handle is provided on the connecting rod.

8. The fire-resistant door with a movable threshold according to claim 7, characterized in that: The cavity sidewall is provided with a second movable groove, the second movable groove is provided with a stop block, the stop block is provided with a second spring and a push plate, one end of the second spring is fixed to the inner wall of the second movable groove, and the push plate extends out from the second movable groove; The fixing block has a notch corresponding to the stop block.

9. The fire door with a movable threshold according to claim 1, characterized in that: The threshold is provided with an abutment plate, the bottom of the abutment plate is provided with a plurality of second sliders, and the threshold is provided with a plurality of second grooves for the second sliders to move.

10. The fire door with a movable threshold according to claim 1, characterized in that: The bottom of the threshold is provided with a sealing strip, which is made of rubber.

Images