Shield door with pressure relief structure

Abstract

The utility model discloses a shielding door with a pressure relief structure, which comprises a door frame, a door leaf and the pressure relief structure, and the door leaf is correspondingly matched with the door frame; the pressure relief structures are respectively connected to the same side surfaces of the door leaf and the door frame; the pressure relief structure comprises a first swing arm and a guide seat, the guide seat is installed on the surface of one side of the door frame, a first swing arm rotating rod is correspondingly installed on the surface of the corresponding side of the door leaf, and the first swing arm can abut against the guide seat in a matched mode by rotating to a preset site. An inclined guide face is arranged on the surface of the side, back to the door frame, of the guide seat relative to the door frame. According to the shielding door with the pressure relief structure, the part, connected to the door leaf, of the pressure relief structure is matched with the part, connected to the door frame, of the pressure relief structure, the door leaf can be driven to be staggered by the preset angle relative to the door frame, and therefore an airflow gap is formed between the door leaf and the door frame, and the pressure relief action of the shielding door in the sealed state is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of shielding doors, in particular to a shielding door with a pressure relief structure. Background Art

[0002] A shielded door is a type of security door typically used to restrict or control access to an area. These doors are commonly used in locations requiring high security, such as vaults, prisons, secure laboratories, nuclear power plants, and virus labs. Shielded doors are typically made of sturdy materials, such as steel or iron, to provide physical separation. This prevents people from easily traversing these doors, ensuring the security of the restricted area. Shielded doors are often integrated with access control systems, restricting access to authorized personnel. This can be achieved through authentication methods such as fingerprint recognition, card swipes, passwords, or biometrics. Shielded doors are designed to ensure a high degree of security when closed. They often feature multiple locking mechanisms to prevent unauthorized entry. Shielded door designs are often customized to specific needs. Different locations and applications may require different types and levels of shielded doors.

[0003] During use, due to its sealing and barrier properties, a shielded door (SPD) easily forms a closed space inside the door, preventing air exchange with the outside. This can easily create a pressure differential across the door. When this pressure differential becomes so large that the door cannot be opened, pressure relief is required on the high-pressure side until the pressure on both sides of the door reaches equilibrium, allowing the door to open with low resistance. Existing SPDs typically use a pressure relief valve to relieve pressure on the high-pressure side of the door. However, installation of this valve typically requires a through-hole in the door body, negatively impacting the door's structural strength and airtightness. Utility Model Content

[0004] Based on this, it is necessary to provide a shield door with a pressure relief structure to address the technical problem that the installation of a pressure relief valve on the existing shield door easily causes the door body structural strength and air tightness to be reduced.

[0005] A shielding door with a pressure relief structure comprises a door frame, a door leaf and a pressure relief structure. The door frame is installed in a wall provided with a door opening of preset size. The door leaf and the door frame cooperate with each other, so that the door leaf can be embedded in the door frame and can be opened and closed relative to the door frame. The pressure relief structure is respectively connected to the same side surfaces of the door leaf and the door frame. The part of the pressure relief structure connected to the door leaf cooperates with the part of the pressure relief structure connected to the door frame, which can drive the door leaf to be staggered by a preset angle relative to the door frame, thereby creating an airflow gap between the door leaf and the door frame.

[0006] The pressure relief structure includes a first swing arm and a guide seat. The guide seat is installed on one side surface of the door frame. Correspondingly, the first swing arm rotating rod is installed on the corresponding side surface of the door leaf, and the first swing arm can cooperate and abut with the guide seat by rotating to a preset position.

[0007] The surface of the guide seat facing away from the door frame is provided with an inclined guide surface relative to the door frame. Therefore, during the rotation cooperation between the first swing arm and the guide seat, one end of the first swing arm cooperating with the guide seat is gradually displaced and lifted along the inclined guide surface relative to the plane of the door frame, thereby forcing the door leaf to be displaced by a preset angle relative to the door frame to form an airflow gap.

[0008] In one embodiment, the above-mentioned first swing arm is provided with a first gripping portion and a first matching portion, and the first gripping portion and the first matching portion are respectively arranged at both ends of the first swing arm with the rotating axis of the first swing arm as the center, and the first matching portion is movably matched with the guide seat within the swinging range of the first swing arm.

[0009] In one embodiment, the above-mentioned shielding door with a pressure relief structure further includes a plurality of hinge mechanisms, wherein the plurality of hinge mechanisms are arranged on a side surface of the shielding door with a pressure relief structure and the corresponding pressure relief structure is arranged on the shielding door with a pressure relief structure, and the plurality of hinge mechanisms are arranged on the same side edge of the shielding door with a pressure relief structure; one end of each hinge mechanism is connected to the door frame, and the other end thereof is connected to the door leaf.

[0010] In one embodiment, the hinge mechanisms are provided in pairs, and the two hinge mechanisms are respectively provided at the top and bottom of one side edge of the shielding door with the pressure relief structure.

[0011] In one embodiment, the screen door with a pressure relief structure further includes a locking mechanism, which is provided on the door leaf, and one end of the locking mechanism can be movably engaged with the door frame.

[0012] In one embodiment, the above-mentioned locking mechanism includes a second swing arm and a matching block, and the matching block is installed on one side surface of the door frame; the second swing arm is rotatably installed on the side edge of the corresponding side surface of the door leaf corresponding to the matching block, and the second swing arm can movably cooperate with the matching block within the swing range.

[0013] In one embodiment, the second swing arm is provided with a second gripping portion and a second matching portion. The second gripping portion is used for pedestrians to grip and pull the second swing arm, and the second matching portion is movably matched with the matching block within the swing range of the second swing arm.

[0014] In one embodiment, the above-mentioned locking mechanism also includes a third swing arm and a connecting shaft, one end of the connecting shaft is connected to the rotation center of the second swing arm, and the other end of the connecting shaft passes through the door leaf and extends to the other side of the door leaf; the third swing arm is connected to the other end of the connecting shaft corresponding to the second swing arm, so that the third swing arm can be linked to the second swing arm through the connecting shaft and rotate synchronously relative to the door leaf seat.

[0015] In one embodiment, the above-mentioned door leaf includes a first steel plate, a fireproof core plate, a fireproof board and a second steel plate. The first steel plate is matched with one side of the door frame, and the fireproof core plate, the fireproof board and the second steel plate are stacked in sequence on the surface of the first steel plate and matched with the other side of the door frame.

[0016] In one embodiment, the other end of the plurality of hinge mechanisms relative to the door frame is connected to the first steel plate, so that the door leaf is hingedly connected to the door frame through the first steel plate.

[0017] In one embodiment, the first swing arm is rotatably mounted on the side surface of the first steel plate.

[0018] In one embodiment, the connecting shaft passes through the first steel plate, the fireproof core plate, the fireproof plate and the second steel plate in sequence.

[0019] The above-mentioned shielding door with a pressure relief structure can drive the door leaf to stagger relative to the door frame by a preset angle through the mutual cooperation of the portion of the pressure relief structure connected to the door leaf and the portion of the pressure relief structure connected to the door frame, thereby creating an airflow gap between the door leaf and the door frame, thereby achieving a pressure relief action of the shielding door in a sealed state. Specifically, the pressure relief structure includes a first swing arm and a guide seat, and the surface of the guide seat facing away from the door frame is provided with an inclined guide surface relative to the door frame. Therefore, during the rotational cooperation of the first swing arm and the guide seat, one end of the first swing arm, which cooperates with the guide seat, gradually rises and shifts relative to the plane of the door frame along the inclined guide surface, thereby forcing the door leaf to stagger relative to the door frame by a preset angle, forming an airflow gap, and then connecting the inside and outside of the shielding door, achieving a pressure relief action of the shielding door in a sealed state, balancing the air pressure inside and outside the shielding door, and facilitating the rapid opening of the shielding door when there is an air pressure difference between the inside and outside. Compared with the traditional shielding door's method of relieving pressure through a pressure relief valve, the shielding door of the present invention can use the elastic deformation recovery ability of the door body to achieve rapid pressure relief without damage, without opening a through hole in the door body to install a pressure relief valve, thereby avoiding affecting the structural strength of the door body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of a screen door with a pressure relief structure in one embodiment;

[0021] Figure 2 for Figure 3 A schematic cross-sectional view of the AA portion of the embodiment shown;

[0022] Figure 3 for Figure 2 An enlarged structural diagram of part I in the illustrated embodiment;

[0023] Figure 4 Schematic diagram of the guide seat structure of a shield door with a pressure relief structure in one embodiment. DETAILED DESCRIPTION

[0024] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0027] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0028] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0029] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0030] See also Figures 1 to 4The utility model discloses a shielding door with a pressure relief structure, which includes a door frame 100, a door leaf 200 and a pressure relief structure 300. The door frame 100 is installed in a wall with a door opening of a preset size, and the door leaf 200 corresponds to the door frame 100, so that the door leaf 200 can be embedded in the door frame 100 and can be opened and closed relative to the door frame 100; the pressure relief structure 300 is respectively connected to the same side surface of the door leaf 200 and the door frame 100, and the part of the pressure relief structure 300 connected to the door leaf 200 cooperates with the part of the pressure relief structure 300 connected to the door frame 100, which can drive the door leaf 200 to stagger relative to the door frame 100 by a preset angle, thereby creating an airflow gap between the door leaf 200 and the door frame 100, thereby realizing the pressure relief action of the shielding door in a sealed state. Specifically, the pressure relief structure 300 includes a first swing arm 310 and a guide seat 320. The guide seat 320 is installed on one side surface of the door frame 100. Correspondingly, the rotating rod of the first swing arm 310 is installed on the corresponding side surface of the door leaf 200, and the first swing arm 310 can cooperate with the guide seat 320 by rotating to a preset position; more specifically, the side surface of the guide seat 320 facing away from the door frame 100 is provided with an inclined guide surface a relative to the door frame 100. Therefore, during the rotation and cooperation between the first swing arm 310 and the guide seat 320, one end of the first swing arm 310 cooperates with the guide seat 320 and is gradually displaced and lifted relative to the plane of the door frame 100 along the inclined guide surface a, thereby forcing the door leaf 200 to be displaced by a preset angle relative to the door frame 100, forming an air flow gap, and then connecting the inside and outside of the shielding door, realizing the pressure relief action of the shielding door in a sealed state, balancing the air pressure inside and outside the shielding door, so that the shielding door can be quickly opened when there is an air pressure difference between the inside and outside. Compared with the traditional shielding door's method of relieving pressure through a pressure relief valve, the shielding door of the present invention can use the elastic deformation recovery ability of the door body to achieve rapid pressure relief without damage, without opening a through hole in the door body to install a pressure relief valve, thereby avoiding affecting the structural strength of the door body.

[0031] Furthermore, the first swing arm 310 is provided with a first gripping portion 311 and a first matching portion 312. The first gripping portion 311 and the first matching portion 312 are respectively arranged at both ends of the first swing arm 310 with the rotating axis of the first swing arm 310 as the center. The first gripping portion 311 is used for pedestrians to grip and pull the first swing arm 310, and the first matching portion 312 is movably matched with the guide seat 320 within the swinging range of the first swing arm 310. Therefore, when the shielding door needs to relieve pressure, the first gripping portion 311 is pulled to cause the first matching portion 312 to cooperate with the guide surface a of the guide seat 320, thereby forcing the door leaf 200 and the door frame 100 to perform a pressure relief action.

[0032] Furthermore, the screen door with a pressure relief structure further includes a plurality of hinge mechanisms 400. These hinge mechanisms 400 are disposed on a side surface of the screen door corresponding to the pressure relief structure 300 disposed thereon, and are also disposed on the same side edge of the screen door. Each hinge mechanism 400 is connected to the door frame 100 at one end and to the door leaf 200 at the other end, thereby enabling the door leaf 200 to be hingedly connected to the door frame 100 via the hinge mechanisms 400. In one embodiment, two hinge mechanisms 400 are provided, one at the top and one at the bottom of one side edge of the screen door with a pressure relief structure, thereby achieving a stable hinged connection between the door leaf 200 and the door frame 100, and improving the smoothness and stability of the opening and closing movements of the door leaf 200 and the door frame 100.

[0033] Furthermore, the shielding door with a pressure relief structure also includes a locking mechanism 500, which is arranged on the door leaf 200, and one end of the locking mechanism 500 can be movably engaged with the door frame 100. Therefore, when the door leaf 200 and the door frame 100 are engaged in place, the relative displacement between the door leaf 200 and the door frame 100 can be limited by the engagement of the locking mechanism 500 and the door frame 100, thereby realizing the locking action between the door leaf 200 and the door frame 100.

[0034] Specifically, the locking mechanism 500 includes a second swing arm 510 and a mating block 520, and the mating block 520 is installed on one side surface of the door frame 100; the second swing arm 510 is rotatably installed on the side edge of the corresponding side surface of the door leaf 200 corresponding to the mating block 520, and the second swing arm 510 can be movably matched with the mating block 520 within the swing range. When the second swing arm 510 is matched with the mating block 520, the door leaf 200 and the door frame 100 are relatively limited and locked. More specifically, the second swing arm 510 is provided with a second gripping portion 511 and a second matching portion 512. The second gripping portion 511 is used for pedestrians to grip and pull the second swing arm 510, and the second matching portion 512 is movably matched with the matching block 520 within the swing range of the second swing arm 510. Therefore, when the shielding door needs to be locked, the second gripping portion 511 is pulled to prompt the second matching portion 512 to cooperate with the matching block 520, thereby prompting the locking action between the door leaf 200 and the door frame 100 to be completed.

[0035] Furthermore, the locking mechanism 500 also includes a third swing arm 530 and a connecting shaft 540, one end of the connecting shaft 540 is connected to the rotation center of the second swing arm 510, and the other end of the connecting shaft 540 passes through the door leaf 200 and extends to the other side of the door leaf 200; the third swing arm 530 is connected to the other end of the connecting shaft 540 corresponding to the second swing arm 510, so that the third swing arm 530 can be linked to the second swing arm 510 through the connecting shaft 540, and rotate synchronously relative to the door leaf 200. Then, pedestrians on both sides of the shield door can respectively pull the second matching part 512 to rotate through the second swing arm 510 and the third swing arm 530, so that both sides can control the locking of the door leaf 200 and the door frame 100.

[0036] Furthermore, the door leaf 200 includes a first steel plate 210, a fireproof core plate 220, a fireproof board 230, and a second steel plate 240. The first steel plate 210 is mounted on one side of the door frame 100, and the fireproof core plate 220, the fireproof board 230, and the second steel plate 240 are sequentially stacked on the surface of the first steel plate 210 and mounted on the other side of the door frame 100, thereby achieving the shielding and fire protection functions of the shielded door. Specifically, a plurality of hinge mechanisms 400 are connected to the first steel plate 210 at the other end relative to the door frame 100, thereby hingedly connecting the door leaf 200 to the door frame 100 via the first steel plate 210; a first swing arm 310 is rotatably mounted on the side surface of the first steel plate 210; and a connecting shaft 540 sequentially passes through the first steel plate 210, the fireproof core plate 220, the fireproof board 230, and the second steel plate 240.

[0037] In summary, the shielding door with a pressure relief structure disclosed in the present invention can drive the door leaf to be offset by a preset angle relative to the door frame through the mutual cooperation of the portion of the pressure relief structure connected to the door leaf and the portion of the pressure relief structure connected to the door frame, thereby creating an airflow gap between the door leaf and the door frame, thereby achieving a pressure relief action of the shielding door in a sealed state. Specifically, the pressure relief structure includes a first swing arm and a guide seat, and the surface of the guide seat facing away from the door frame is provided with an inclined guide surface relative to the door frame. Therefore, during the rotational cooperation of the first swing arm and the guide seat, one end of the first swing arm cooperates with the guide seat and gradually rises and displaces relative to the plane of the door frame along the inclined guide surface, thereby forcing the door leaf to be offset by a preset angle relative to the door frame, forming an airflow gap, and then connecting the inside and outside of the shielding door, achieving a pressure relief action of the shielding door in a sealed state, balancing the air pressure inside and outside the shielding door, so that the shielding door can be quickly opened when there is an air pressure difference between the inside and outside. Compared with the traditional shielding door's method of relieving pressure through a pressure relief valve, the shielding door of the present invention can use the elastic deformation recovery ability of the door body to achieve rapid pressure relief without damage, without opening a through hole in the door body to install a pressure relief valve, thereby avoiding affecting the structural strength of the door body.

[0038] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A screen door with a pressure relief structure, characterized in that: include: A door frame, a door leaf, and a pressure relief structure, wherein the door frame is installed in a wall provided with a door opening of a preset size, and the door leaf and the door frame are matched accordingly, so that the door leaf can be embedded in the door frame and can be opened and closed relative to the door frame; the pressure relief structure is respectively connected to the same side surface of the door leaf and the door frame, and the part of the pressure relief structure connected to the door leaf and the part of the pressure relief structure connected to the door frame cooperate with each other, so that the door leaf can be driven to stagger by a preset angle relative to the door frame, thereby creating an airflow gap between the door leaf and the door frame; The pressure relief structure includes a first swing arm and a guide seat, wherein the guide seat is mounted on a side surface of the door frame, and correspondingly, a first swing arm rotation rod is mounted on a corresponding side surface of the door leaf, and the first swing arm can cooperate with and abut against the guide seat by rotating to a preset position; The side surface of the guide seat facing away from the door frame is provided with an inclined guide surface relative to the door frame. Therefore, during the rotational cooperation between the first swing arm and the guide seat, one end of the first swing arm cooperates with the guide seat and is gradually displaced and lifted relative to the plane of the door frame along the inclined guide surface, thereby forcing the door leaf to be displaced by a preset angle relative to the door frame to form an airflow gap.

2. The screen door with a pressure relief structure according to claim 1, characterized in that: The first swing arm is provided with a first gripping portion and a first matching portion. The first gripping portion and the first matching portion are respectively arranged at two ends of the first swing arm with the rotating axis of the first swing arm as the center. The first matching portion is movably matched with the guide seat within the swing range of the first swing arm.

3. The screen door with a pressure relief structure according to claim 1, characterized in that: The shielding door with a pressure relief structure also includes a plurality of hinge mechanisms, and the plurality of hinge mechanisms are arranged on a side surface of the shielding door corresponding to the pressure relief structure arranged on the shielding door with a pressure relief structure, and the plurality of hinge mechanisms are arranged on the same side edge of the shielding door with a pressure relief structure; one end of each hinge mechanism is connected to the door frame, and the other end thereof is connected to the door leaf.

4. The screen door with a pressure relief structure according to claim 3, characterized in that: The hinge mechanisms are provided in two, and the two hinge mechanisms are respectively provided at the top and the bottom of one side edge of the shielding door with the pressure relief structure.

5. The screen door with a pressure relief structure according to claim 1, characterized in that: The shield door with a pressure relief structure further includes a locking mechanism, which is arranged on the door leaf, and one end of the locking mechanism can be movably matched with the door frame.

6. The screen door with a pressure relief structure according to claim 5, characterized in that: The locking mechanism includes a second swing arm and a matching block, and the matching block is installed on one side surface of the door frame; the second swing arm is rotatably installed on the side edge of the corresponding side surface of the door leaf corresponding to the matching block, and the second swing arm can movably cooperate with the matching block within the swing range.

7. The screen door with a pressure relief structure according to claim 6, characterized in that: The second swing arm is provided with a second gripping portion and a second matching portion. The second gripping portion is used for pedestrians to grip and pull the second swing arm, and the second matching portion is movably matched with the matching block within the swing range of the second swing arm.

8. The screen door with a pressure relief structure according to claim 7, characterized in that: The locking mechanism also includes a third swing arm and a connecting shaft, one end of the connecting shaft is connected to the rotation center of the second swing arm, and the other end of the connecting shaft passes through the door leaf and extends to the other side of the door leaf; the third swing arm is connected to the other end of the connecting shaft corresponding to the second swing arm, so that the third swing arm can be linked to the second swing arm through the connecting shaft and rotate synchronously relative to the door leaf seat.

9. The screen door with a pressure relief structure according to claim 3, characterized in that: The door leaf includes a first steel plate, a fireproof core plate, a fireproof board and a second steel plate. The first steel plate is matched with one side of the door frame. The fireproof core plate, the fireproof board and the second steel plate are stacked in sequence on the surface of the first steel plate and matched with the other side of the door frame.

10. The screen door with a pressure relief structure according to claim 9, characterized in that: The other end of the plurality of hinge mechanisms relative to the door frame is connected to the first steel plate, so that the door leaf is hingedly connected to the door frame through the first steel plate.

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