Landing type double-leaf air-tight door
By introducing an adjustment component and a matching threshold design into the drop-down airtight door, the problem of cumbersome operation of existing airtight doors during flood prevention is solved, and automatic threshold adjustment is achieved, improving sealing performance and operational efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2026-03-24
AI Technical Summary
Existing drop-down airtight doors are urgent and cumbersome to operate during flood prevention work, requiring sealing strips to completely seal the door, resulting in tight operation time and complicated procedures.
Design a drop-down double-leaf airtight door, including a door frame assembly, door leaves, adjustment assembly and threshold. The adjustment assembly, through the cooperation of a drive assembly and a moving assembly, drives the threshold to move vertically, so that the threshold is flush with the ground when open and extends when closed to improve the sealing performance.
By adjusting the design of the components, the threshold automatically adjusts its position as the door rotates, simplifying flood prevention operations and improving the sealing performance and operational efficiency of the airtight door.
Smart Images
Figure CN224032452U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of airtight doors, specifically to a drop-down double-leaf airtight door. Background Technology
[0002] Slide-down airtight doors are widely used in underground parking garages, shopping malls, hospitals, and warehouses. To facilitate the entry and exit of people and vehicles, they typically do not have thresholds. Slide-down airtight doors can also be used for flood prevention, making them widely used in coastal cities, river basins, and low-lying areas prone to flooding. However, because of their thresholdless design, they require sealing strips to completely seal during flood prevention, making the process time-sensitive and cumbersome for operators. Therefore, improvements to existing airtight doors are needed. Utility Model Content
[0003] The purpose of this application is to provide a sealed door that can solve at least one of the defects in the above-mentioned background art.
[0004] To achieve at least one of the above objectives, the technical solution adopted in this application is as follows: a drop-type double-leaf airtight door, comprising a door frame assembly, door leaves, an adjustment assembly, and a threshold; the door leaves are adapted to be connected to the door frame assembly, and the door leaves are adapted to rotate about the axis of the connection point; the adjustment assembly is disposed within the door frame assembly and is connected to the door leaves; the threshold is vertically slidably installed on the ground, and the adjustment assembly extends partially from the door frame assembly and is connected to the threshold; the door leaves are adapted to rotate so that the adjustment assembly drives the threshold to change its position in the vertical direction.
[0005] Preferably, the adjustment component includes a drive component and a moving component; the drive component is installed on the door leaf and corresponds to the rotation axis of the door leaf, the moving component is horizontally slidably installed on the ground, the moving component is in transmission cooperation with the drive component, and the moving component is in cooperation with the threshold through a traction structure; the drive component is adapted to rotate with the door leaf to drive the moving component to translate, and the moving component drives the threshold to move vertically through the traction structure.
[0006] Preferably, the threshold is vertically and elastically slidably mounted on the ground by a spring; the moving component is provided with a wedge-shaped surface, and the moving component cooperates with the threshold through the wedge-shaped surface to form the traction structure; the moving component moves horizontally to make different positions of the wedge-shaped surface contact the threshold to drive the threshold to move vertically.
[0007] Preferably, the driving component includes a first gear; the moving component includes a rack; the first gear is adapted to engage with the door leaf, and the first gear is adapted to engage with the rack; the first gear is adapted to rotate with the door leaf to drive the rack to translate; the end of the rack near the threshold is provided with a wedge-shaped surface that engages with the threshold.
[0008] Preferably, the drive assembly further includes a second gear; there is a pair of racks; the second gear is adapted to engage with the first gear, and the second gear is adapted to engage with the other rack; the rotation of the first gear causes the second gear to rotate, thereby causing both racks to engage with the threshold in a wedge shape.
[0009] Preferably, the adjustment component includes a rotating member; the rotating member is mounted on the door leaf and corresponds to the rotation axis position of the door leaf; the end of the rotating member and the threshold are connected by a traction structure so that the rotating member drives the threshold to move in the vertical direction by rotation.
[0010] Preferably, the rotating member is columnar, and a protrusion is provided on the outer side of the rotating member; the end of the threshold is provided with an arc-shaped surface concentric with the rotating member, and a cam groove is provided on the arc-shaped surface; the protrusion is adapted to cooperate with the cam groove to form the traction structure, and then the threshold is driven to move vertically by sliding the protrusion along the cam groove.
[0011] Compared with the prior art, the beneficial effects of this application are as follows:
[0012] Compared to existing airtight doors, this application includes a threshold and an adjustment component. The adjustment component is connected to the door leaf and can rotate around the connection point; simultaneously, the adjustment component is also connected to the threshold, allowing the threshold to move vertically. When the door leaf is open, the threshold retracts and becomes flush with the ground; when the door leaf is closed, the threshold extends to engage with the door leaf for a sealed enclosure. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0014] Figure 2 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model.
[0015] Figure 3 This utility model Figure 2 A magnified view of a portion of point A in the middle.
[0016] Figure 4This is a schematic diagram showing the disassembled state of the adjustment component in Embodiment 1 of this utility model.
[0017] Figure 5 This is a cross-sectional structural diagram of Embodiment 1 of this utility model.
[0018] Figure 6 This is a schematic diagram of the wedge-shaped fit between the adjustment component and the threshold in Embodiment 1 of this utility model.
[0019] Figure 7 This is a top view of Embodiment 2 of the present invention.
[0020] Figure 8 This is a simplified schematic diagram of Embodiment 2 of the present invention.
[0021] In the diagram: door frame assembly 1, door frame 10, column 11, support 12, door leaf 2, connector 20, adjustment assembly 3, drive assembly 30, rotating part 300, protrusion 3000, first gear 301, second gear 302, moving assembly 31, first rack 310, second rack 311, wedge surface 312, threshold 4, baffle 40, cam groove 41, spring 5, ground 6. Detailed Implementation
[0022] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0023] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this application.
[0024] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.
[0025] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.
[0026] One preferred embodiment of this application, such as Figures 1 to 8 As shown, a drop-down double-leaf airtight door includes a door frame assembly 1, door leaves 2, an adjusting assembly 3, and a threshold 4. Door leaves 2 can be connected to the door frame assembly 1 and can rotate about the axis of the connection point. The adjusting assembly 3 is disposed within the door frame assembly 1 and is connected to the door leaves 2. The threshold 4 is vertically slidably mounted on the ground 6, and a portion of the adjusting assembly 3 extends out of the door frame assembly 1 and is connected to the threshold 4. Rotation of the door leaves allows the adjusting assembly 3 to drive the threshold 4 to change its vertical position.
[0027] It should be noted that sliding airtight doors are widely used in underground parking garages, shopping malls, hospitals, and warehouses. To facilitate the entry and exit of people and vehicles, these doors typically do not have thresholds. They can also be used for flood prevention, making them widely used in coastal cities, river basins, and low-lying areas prone to flooding. However, because of their thresholdless design, sliding airtight doors require sealing strips to completely seal them during flood prevention operations, thus blocking floodwaters. This makes flood prevention operations extremely time-sensitive and cumbersome for operators. Therefore, improvements to existing airtight doors are necessary.
[0028] If a movable threshold is installed on the drop-type airtight door, that is, the threshold 4 is installed below the ground 6, the threshold 4 drops to be flush with the ground 6 when the airtight door is open; when the airtight door is closed, the threshold 4 rises back to abut against the bottom of the airtight door, so as to improve the overall sealing performance of the airtight door.
[0029] Therefore, in this embodiment, an adjustment component 3 is provided. The threshold 4 is slidably installed under the ground 6. The threshold 4 and the adjustment component 3 are connected in cooperation. The adjustment component 3 and the door leaf 2 are connected in cooperation. The door leaf 2 can drive the adjustment component 3 to rotate, so that the adjustment component 3 can drive the threshold 4 to move in the vertical direction, thereby making the threshold 4 flush with the ground 6 or protrude from the ground 6.
[0030] It should be understood that there are many ways to achieve the connection and drive of the adjustment component 3 and the threshold 4, and the specific structure of each method is different; for ease of understanding, the following two embodiments can be used to illustrate this.
[0031] Example 1:
[0032] In this embodiment, as Figures 2 to 4 As shown, the threshold 4 is block-shaped, and baffles 40 are provided on both sides of the threshold 4 along the width direction; the threshold 4 is set on the ground 6, and the baffles 40 are elastically slidably connected to the threshold 4 and the ground 6 through elastic elements; the adjustment component 3 includes a drive component 30 and a moving component 31.
[0033] It should be understood that the drive assembly 30 is installed on the door leaf 2 and corresponds to the rotation axis of the door leaf 2. The moving assembly 31 is horizontally slidably installed on the ground 6. The moving assembly 31 and the drive assembly 30 are engaged in transmission, and the moving assembly 31 and the threshold 4 are engaged through a traction structure. The drive assembly 30 can rotate with the door leaf 2 to drive the moving assembly 31 to translate, and the moving assembly 31, through the traction structure, drives the threshold 4 to move vertically.
[0034] It is understood that there are various specific implementations of the traction structure, but in this embodiment, the traction structure is set as follows: a wedge-shaped surface 312 is provided on the moving component 31, and the moving component 31 cooperates with the threshold 4 through the wedge-shaped surface 312 to form a traction structure. The moving component 31 moves horizontally to make different positions of the wedge-shaped surface 312 contact the threshold 4 to drive the threshold 4 to move vertically.
[0035] It should be understood that, as described above, the baffle 40 drives the threshold 4 and the ground 6 to slide elastically through the elastic element. In this embodiment, the elastic element is set as a spring 5.
[0036] In this embodiment, the door frame assembly 1 includes a door frame 10, a post 11, and a support 12. The door frame 10 is fixedly connected to the post 11, and the door frame 10 and the post 11 are also fixedly connected to the wall. The post 11 is vertically installed on the ground 6. The support 12 is located at the lower end of the post 11, and the lower end of the support 12 is connected to the ground 6. At this time, the door leaf 2 is rotatably connected to the post 11, and the door leaf 2 can stably rotate around the axis of the post 11.
[0037] It should be noted that, in order to facilitate the rotatable connection between the door leaf 2 and the column 11, the door leaf 2 is provided with connectors 20 at both the top and bottom ends on the side used for rotatable connection with the column 11; the door leaf 2 is rotatably connected to the column 11 through the connectors 20.
[0038] As can be understood from the above, the drive assembly 30 can rotate with the door leaf 2; the drive assembly 30 includes a rotating component 300, which is connected to the connector 20 at the lower end of the door leaf 2. At the same time, the rotating component 300 and the column 11 are coaxially arranged so that when the door leaf 2 rotates around the axis of the column 11 through the connector 20, the rotating component 300 can rotate with the connector 20 because of the connection between the rotating component 300 and the connector 20.
[0039] Specifically, such as Figure 5 As shown, the connector 20 is sleeved on the outside of the rotating member 300, while the rotating member 300 is sleeved on the outside of the column 11. It should be noted that the connector 20 and the rotating member 300 are fixedly sleeved, while the rotating member 300 and the column 11 are rotatably sleeved, so that when the door leaf 2 rotates, the rotation of the door leaf 2 can drive the rotating member 300 to rotate around the axis of the column 11. Simultaneously, the rotating member 300 and the support part 12 are also rotatably connected, and the lower end of the rotating member 300 extends out of the support part 12.
[0040] In this embodiment, as can be seen from the above, the driving component 30 can drive the moving component 31 to translate by rotation, and at the same time, the moving component 31 and the threshold 4 can be wedge-shaped to allow the moving component 31 to control the vertical movement of the threshold 4 by translation.
[0041] Therefore, in this embodiment, as Figures 4 to 6 As shown, the drive assembly 30 includes a first gear 301; the moving assembly 31 includes a rack. The first gear 301 can be coaxially fixedly disposed at the lower end of the rotating member 300 extending from the support portion 12, so that the first gear 301 can rotate with the rotation of the rotating member 300. Since the rotating member 300 rotates with the rotation of the door leaf 2, the first gear 301 can be understood as rotating with the rotation of the door leaf 2, that is, the first gear 301 can be connected to the door leaf 2.
[0042] It is understandable that the rack can mesh with the first gear 301, so that the first gear 301 can drive the rack to translate when it rotates.
[0043] It is also understandable that the rack has a wedge-shaped surface 312 that engages with the sill 4 at one end, so that the rack can control the movement of the sill 4 in the vertical direction through translation.
[0044] In this embodiment, as Figure 2 and Figure 6As shown, multiple springs 5 are installed on the baffles 40 on both sides of the threshold 4 along its width. The upper and lower ends of the springs 5 are connected to the ground 6 and the baffles 40, respectively. Driven by the rotation of the first gear 301, the rack moves horizontally. After the wedge-shaped engagement between the rack and the threshold 4, the threshold 4 begins to move vertically downwards, becoming flush with the ground 6. When the door 2 is closed, the rack begins to move horizontally in the opposite direction, and the threshold 4 returns to its original state under the elastic force of the springs 5, i.e., the threshold 4 extends beyond the ground 6.
[0045] It is understandable that the baffle 40 is provided in pairs, while if only one rack is provided, it may cause uneven force on the threshold 4; therefore, in this embodiment, if... Figure 6 As shown, there is a pair of racks, namely a first rack 310 and a second rack 311. The first rack 310 is directly engaged with the first gear 301. If the second rack 311 is also directly engaged with the first gear 301, the translational direction of the second rack 311 will be opposite to the translational direction of the first rack 310.
[0046] Therefore, in this embodiment, as Figure 6 As shown, the drive assembly 30 also includes a second gear 302; the second gear 302 can mesh with the first gear 301, and the second rack 311 and the second gear 302 are also meshed. Thus, when the first gear 301 rotates with the door leaf 2, it can simultaneously drive the first rack 310 and the second gear 302 to rotate. The rotation of the second gear 302 can drive the second rack 311 to rotate, thereby causing the second rack 311 to translate in the same direction as the first rack 310. Therefore, the rotation of the first gear 301 can drive the first rack 310 and the second rack 311 to simultaneously engage with the threshold 4 in a wedge-shaped manner, allowing the threshold 4 to move vertically downwards with uniform force.
[0047] Example 2:
[0048] Compared to Example 1, Example 2 differs in that: Figure 7 and Figure 8 As shown, the rotating part 300 can be directly connected to the threshold 4.
[0049] In this embodiment, the adjustment component 3 includes a rotating member 300, which is mounted on the door leaf 2 and corresponds to the rotation axis position of the door leaf 2. The ends of the rotating member 300 and the threshold 4 are connected by a traction structure so that the rotating member 300 drives the threshold 4 to move vertically by rotating.
[0050] As can be seen from the above, the rotating component 300 can be directly connected to the threshold 4, meaning that the rotating component 300 can directly drive the threshold 4 to move in the vertical direction through rotation. However, there are many ways in which the ends of the rotating component 300 and the threshold 4 are connected by a traction structure. For ease of understanding, an embodiment will be explained below.
[0051] In this embodiment, as Figure 7 and Figure 8 As shown, the rotating component 300 can be connected to the door leaf 2 in the same way as in Embodiment 1 above. The rotating component 300 is also coaxially arranged with the column 11. The rotating component 300 is columnar, and a protrusion 3000 is provided on the outer side of the rotating component 300. The end of the threshold 4 is provided with an arc-shaped surface concentric with the rotating component 300, and a cam groove 41 is provided on the arc-shaped surface. The protrusion 3000 can cooperate with the cam groove 41 to form a traction structure, and then the threshold 4 is driven to move vertically by the sliding of the protrusion 3000 along the cam groove 41.
[0052] Specifically, when the door leaf 2 rotates, it can drive the rotating component 300 to rotate, thereby causing the protrusion 3000 to rotate. The protrusion 3000 extends into the cam groove 41. When the protrusion 3000 rotates, the threshold 4 cannot rotate, so that the threshold 4 can only move vertically under the drive of the rotation of the protrusion 3000. That is, the rotating component 300 can directly move the threshold 4 vertically through the cam structure between the protrusion 3000 and the cam groove 41, thereby allowing the threshold 4 to extend out of the ground 6 or to be flush with the ground 6.
[0053] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.
Claims
1. A drop-side bi-parting security door comprising, include: The present invention comprises a door frame assembly, a door leaf, an adjustment assembly, and a threshold; the door leaf is adapted to be connected to the door frame assembly and is adapted to rotate about an axis at the connection point; the adjustment assembly is disposed within the door frame assembly and is connected to the door leaf; the threshold is vertically slidably mounted on the ground, and the adjustment assembly extends partially from the door frame assembly and is connected to the threshold; the door leaf is adapted to rotate so that the adjustment assembly drives the threshold to change its position in the vertical direction.
2. A drop-side bi-parting door as claimed in claim 1 wherein: The adjustment assembly includes a drive assembly and a moving assembly; the drive assembly is installed on the door leaf and corresponds to the rotation axis of the door leaf, the moving assembly is horizontally slidably installed on the ground, the moving assembly is driven by the drive assembly, and the moving assembly is engaged with the threshold through a traction structure; the drive assembly is adapted to rotate with the door leaf to drive the moving assembly to translate, and the moving assembly drives the threshold to move vertically through the traction structure.
3. A drop-side bi-parting door as claimed in claim 2 wherein: The threshold is vertically and elastically slidably mounted on the ground by a spring; the moving component is provided with a wedge-shaped surface, and the moving component cooperates with the threshold through the wedge-shaped surface to form the traction structure; the moving component moves horizontally to make different positions of the wedge-shaped surface contact the threshold to drive the threshold to move vertically.
4. A drop-side bi-parting door as claimed in claim 3 wherein: The drive assembly includes a first gear; the moving assembly includes a rack; the first gear is adapted to engage with the door leaf, and the first gear is adapted to engage with the rack. The first gear is adapted to rotate with the door leaf to drive the rack to translate; the rack is provided with a wedge-shaped surface that cooperates with the threshold at one end.
5. A drop-side bi-parting door as claimed in claim 4 wherein: The drive assembly further includes a second gear; there is a pair of racks; the second gear is adapted to engage with the first gear and the other rack; the rotation of the first gear causes the second gear to rotate, thereby causing both racks to engage with the threshold in a wedge shape.
6. A drop-type double-leaf airtight door as described in claim 1, characterized in that: The adjustment assembly includes a rotating component; the rotating component is mounted on the door leaf and corresponds to the rotation axis position of the door leaf; the end of the rotating component and the threshold are connected by a traction structure so that the rotating component drives the threshold to move in the vertical direction by rotation.
7. A drop-type double-leaf airtight door as described in claim 6, characterized in that: The rotating component is cylindrical, and a protrusion is provided on the outer side of the rotating component; the end of the threshold is provided with an arc-shaped surface concentric with the rotating component, and a cam groove is provided on the arc-shaped surface; the protrusion is adapted to cooperate with the cam groove to form the traction structure, and then the threshold is driven to move vertically by sliding the protrusion along the cam groove.