Rear anchoring type doorsill-free damp-proof door

Abstract

The utility model discloses a rear anchoring type doorsill-free damp-proof door which comprises a door leaf, a door frame mechanism, a hinge and a locking mechanism, the door frame mechanism is fixed in a wall, the door leaf is connected to the door frame mechanism through the hinge, and the locking mechanism is arranged on the door leaf and connected with the door frame mechanism; the locking mechanism comprises a rotary locking structure and a sealing structure, the rotary locking structure and the sealing structure are arranged on the door leaf, the sealing structure is connected with the rotary locking structure, when the door is locked, the rotary locking structure is connected with the door frame mechanism, and the sealing structure is attached to the door frame mechanism in a sealed mode. The locking mechanism adopted by the utility model is simpler in structure, so that the door leaf is easier to open and close, the opening and closing efficiency of the door leaf is improved, the sealing effect of the sealing structure is better, and the moisture-proof and waterproof effects are improved; a split type modular structure is adopted, the automation level of production is better, and installation and maintenance operation are more convenient.

Description

Technical Field

[0001] This utility model relates to the field of airtight protective doors, specifically to a rear-anchored thresholdless moisture-proof door. Background Technology

[0002] Airtight protective doors are an important component of underground protective facilities. To ensure protective performance, heavy-duty high-resistance protective doors are often used. These heavy-duty high-resistance protective doors typically employ electric opening and closing mechanisms and are equipped with thresholds to enhance their protective effect. However, heavy-duty high-resistance protective doors are not suitable for all scenarios. Some scenarios have lower protection requirements, and protective doors are mainly installed in locations requiring moisture and water resistance. Therefore, lightweight waterproof and moisture-proof doors are needed to meet these requirements. For example, the thresholdless waterproof airtight door disclosed in CN118273635A can meet the requirements for waterproofing and moisture resistance. However, its door lock linkage system is too complex, making manual opening difficult and resulting in poor opening and closing efficiency. Moreover, its complex structure leads to cumbersome production and installation, hindering rapid production and installation. Furthermore, the pre-embedded installation method makes construction complex and inefficient. This utility model provides a rear-anchored thresholdless moisture-proof door to solve the above problems. Utility Model Content

[0003] This utility model provides a rear-anchored thresholdless moisture-proof door, which adopts a modular structure and improves the installation strength, production and installation efficiency of the protective door through a rear-anchored installation method, and is more convenient to use and has a better protective effect.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is:

[0005] A rear-anchored thresholdless moisture-proof door includes a door leaf, a door frame mechanism, hinges, and a locking mechanism. The door frame mechanism is fixed in the wall, the door leaf is connected to the door frame mechanism via hinges, and the locking mechanism is located on the door leaf and connected to the door frame mechanism.

[0006] The locking mechanism includes a rotary locking structure and a sealing structure, which are installed on the door leaf. The sealing structure is connected to the rotary locking structure. When the door is locked, the rotary locking structure is connected to the door frame mechanism, and the sealing structure is fitted and sealed to the door frame mechanism.

[0007] Furthermore, the rotary locking structure includes a rotary locking head, a side connecting rod, an upper connecting rod, and a drive assembly. The drive assembly is mounted on the door leaf, the upper connecting rod is connected to the drive assembly, the side connecting rod is movably connected to the upper connecting rod, and the rotary locking head is movably connected to the side connecting rod. The sealing structure includes a sealing seat, a lower connecting rod, an actuating connecting rod, and a limiting assembly. The lower connecting rod is connected to the drive assembly via the actuating connecting rod. The sealing seat is located at the bottom of the lower connecting rod, and the limiting assembly is located on the door leaf and connected to the sealing seat. The bottom end of the side connecting rod is connected to the lower connecting rod.

[0008] Furthermore, the door leaf includes a door panel and a frame, the door panel is located on the front and rear sides of the frame, and the locking mechanism is located on the rear door panel; the frame includes crossbeams and longitudinal beams, and the longitudinal beams are spaced apart between the crossbeams; both the crossbeams and longitudinal beams include main beams and reinforcing beams, and the reinforcing beams are located in the main beams.

[0009] Furthermore, the door frame mechanism includes a frame, a threshold, and an anchoring structure. The frame is installed in the doorway of the wall via the anchoring structure, and the threshold is located at the bottom of the frame. The frame includes a door frame panel and a door casing panel, with the door frame panel located on the front side of the door casing panel. A sealing strip is provided on the door frame panel. The anchoring structure includes an anchor plate and anchor bolts. The anchor plate is connected to the door frame panel and the door casing panel, and the anchor plate is fixedly connected to the wall via anchor bolts. When the door is locked, the door leaf is in contact with the door frame panel, and the sealing structure is in contact with the threshold.

[0010] Furthermore, the hinge includes a hinge shaft, a shaft seat, and a hinge cover. The shaft seat and the hinge cover are fixedly mounted on the anchor plate, the hinge shaft is movably mounted in the shaft seat, and the door leaf is fixedly connected to the hinge shaft.

[0011] Furthermore, the drive assembly includes a handwheel, a drive shaft, a drive gear, a mounting base, and a drive rack. The mounting base is located on the rear side of the door leaf. The drive gear is movably mounted in the mounting base. The handwheel is connected to the drive gear via the drive shaft. The drive rack is movably mounted in the mounting base and meshes with the drive gear. The upper connecting rod and the actuating connecting rod are respectively connected to the upper and lower ends of the drive rack.

[0012] Furthermore, the sealing seat includes a sill sealing strip and a lower pressure seat, the lower pressure seat being located at the bottom of the lower connecting rod, and the sill sealing strip being located on the lower pressure seat.

[0013] Furthermore, the limiting assembly includes a bearing housing, a linear bearing, and a guide shaft. The bearing housing is located on the rear side of the door leaf, the linear bearing is located in the bearing housing, and is connected to the sealing seat through the guide shaft.

[0014] Furthermore, the locking mechanism is provided with an outer cover, which is located on the door leaf.

[0015] Furthermore, the threshold is provided with corner blocks, which are correspondingly arranged with the sealing seat and cooperate with each other.

[0016] The beneficial effects of this utility model are as follows:

[0017] The locking mechanism adopted is simpler, making the door easier to open and close, improving the efficiency of the door opening and closing, and the sealing structure has a better sealing effect, improving the moisture and water resistance; the split modular structure adopts a better level of automation in production, and makes installation and maintenance operations more convenient.

[0018] The post-anchoring fixing method simplifies the construction operations of the main structure in the early stage, while improving the installation strength of the protective door and making the overall construction speed faster. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the usage state of this utility model;

[0020] Figure 2 This is a rear view diagram of the present invention in its installed state;

[0021] Figure 3 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the door leaf structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the internal structure of the door leaf of this utility model;

[0024] Figure 6 This is a schematic diagram of the combined state of the main beam and the reinforcing beam of this utility model;

[0025] Figure 7 This is a schematic diagram of the door frame structure of this utility model;

[0026] Figure 8 A schematic diagram showing the setting status of the sealing strip on the frame of this utility model;

[0027] Figure 9 This is a schematic diagram of the hinge structure of this utility model;

[0028] Figure 10 This is a schematic diagram showing the connection state between the locking structure of this utility model and the door leaf;

[0029] Figure 11 This is a schematic diagram of the overall structure of the locking structure of this utility model;

[0030] Figure 12 This is a front view schematic diagram of the locking structure of this utility model;

[0031] Figure 13 This is a schematic diagram of the drive component structure of this utility model;

[0032] Figure 14 This is a schematic diagram of the internal structure of the drive component of this utility model;

[0033] Figure 15 This is a schematic diagram of the limiting component structure of this utility model;

[0034] Figure 16 This is a schematic diagram of the sealing seat structure of this utility model;

[0035] Figure 17 This is a schematic diagram of the anchoring structure of the present invention, which connects to the door frame and hinges.

[0036] Figure 18 This is a schematic diagram of the anchoring structure of the present invention connected to the door frame.

[0037] Reference numerals: 1. Door leaf; 11. Door panel; 12. Frame; 121. Main beam; 122. Reinforcing beam; 2. Door frame mechanism; 21. Frame; 22. Threshold; 23. Anchoring structure; 3. Hinge; 4. Locking mechanism; 41. Rotary locking structure; 411. Rotary locking head; 412. Side link; 413. Upper link; 414. Drive assembly; 42. Sealing structure; 421. Sealing seat; 422. Lower link; 423. Action link; 424. Limiting assembly. Detailed Implementation

[0038] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0039] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0040] like Figure 1 , 2As shown in Figure 3, a rear-anchored thresholdless moisture-proof door adopts a modular structure, including a door leaf 1, a door frame mechanism 2, a hinge 3, and a locking mechanism 4. The door frame mechanism 2 is fixed in the wall, and the door leaf 1 is connected to the door frame mechanism 2 through the hinge 3. The locking mechanism 4 is located on the door leaf 1. The locking mechanism 4 adopts a modular structure and is set on the rear side of the door leaf 1, which can realize more convenient installation and maintenance operations. The locking mechanism 4 is connected to the door frame mechanism 2 when the door is closed.

[0041] This utility model comprises various modules including a door leaf 1, a door frame mechanism 2, a hinge 3, and a locking mechanism 4. In particular, the door leaf 1 and the locking mechanism 4 adopt a split modular construction, placing the locking mechanism 4 on the rear side of the door leaf 1 instead of inside it. This improves the production efficiency of the door leaf 1 and the locking mechanism 4, reduces production difficulty, and ensures ease of maintenance and the overall structural strength of the door leaf 1. The door frame mechanism 2 adopts a threshold-free construction, utilizing the sealing structure 42 in the locking mechanism 4 to achieve a seal at the bottom of the door leaf 1, improving the safety of personnel and vehicles. The external sealing structure 42 provides better sealing performance and simplifies the structural complexity of the locking mechanism 4. It adopts a rotary locking structure 41, which is linked with the sealing structure 42, ensuring both ease of operation and sealing performance. Furthermore, the rear-anchored installation method, combined with the modular structure, effectively meets the needs of civil defense and ensures safety and reliability during use. It also features high connection strength, simple installation and operation, and high construction efficiency. It does not interfere with the initial concrete pouring and improves the construction efficiency of the concrete structure.

[0042] like Figure 10 , 11 As shown in Figure 12, the locking mechanism 4 includes a rotary locking structure 41 and a sealing structure 42. The rotary locking structure 41 and the sealing structure 42 are provided on the door leaf 1. The sealing structure 42 is connected to the rotary locking structure 41. When locking the door, the rotary locking structure 41 is connected to the door frame mechanism 2, and the sealing structure 42 is fitted and sealed to the door frame mechanism 2.

[0043] The working principle of the locking mechanism 4 is as follows: The operator manually operates the handwheel, which rotates and drives the drive gear to rotate via the drive shaft. The drive gear meshes with the drive rack. When the drive gear rotates, the drive rack moves up and down. The up and down movement of the drive rack drives the upper connecting rod 413 above it and the lower actuating connecting rod 423 below it to move synchronously. The movement of the upper connecting rod 413 drives the side connecting rod 412 to move, and the actuating connecting rod 423 drives the lower connecting rod 422 to move. The movement of the lower connecting rod 422 also drives the side connecting rod 412 to move. The side link 412 moves under the drive of the upper link 413 and the lower link 422, causing the rotating locking head 411 at its end to rotate and lock. The sealing seat 421 on the lower link 422 moves synchronously with the lower link 422. Due to the limitation of the limiting component 424, the sealing seat 421 moves up and down. When the rotating locking head 411 is open, the sealing seat 421 moves upward and disengages from the sill 22. When the rotating locking head 411 is locked, the sealing seat 421 moves downward and fits against the sill 22 to seal.

[0044] like Figure 10 , 11 As shown in Figure 12, the rotary locking structure 41 further includes a rotary locking head 411, a side connecting rod 412, an upper connecting rod 413, and a drive assembly 414. The drive assembly 414 is disposed on the door leaf 1. The upper connecting rod 413 is connected to the drive assembly 414. The side connecting rod 412 is movably connected to the upper connecting rod 413. The rotary locking head 411 is movably connected to the side connecting rod 412. The sealing structure 42 includes a sealing seat 421, a lower connecting rod 422, an actuating connecting rod 423, and a limiting assembly 424. The lower connecting rod 422 is connected to the drive assembly 414 through the actuating connecting rod 423. The sealing seat 421 is disposed at the bottom of the lower connecting rod 422. The limiting assembly 424 is disposed on the door leaf 1 and connected to the sealing seat 421. The bottom end of the side connecting rod 412 is connected to the lower connecting rod 422. Power is transmitted from the drive assembly 414 to the upper link 413 and the action link 423. The action link 423 is transmitted to the lower link 422. The upper link 413 and the lower link 422 work together to drive the side link 412 to move. The movement of the side link 412 causes the rotating locking head 411 to rotate. The sealing seat 421 moves synchronously with the lower link 422 and is limited by the limiting assembly 424 to move up and down.

[0045] like Figure 13 , 14As shown, the drive assembly 414 further includes a handwheel, a drive shaft, a drive gear, a mounting base, and a drive rack. The mounting base is located on the rear side of the door leaf 1 and serves as the mounting base for the drive gear and drive rack. The drive gear is movably mounted in the mounting base. The handwheel is connected to the drive gear via the drive shaft. When the handwheel rotates, the action is transmitted to the drive gear via the drive shaft. The drive rack is movably mounted in the mounting base and meshes with the drive gear. The rotation of the drive gear causes the drive rack to move up and down. The upper connecting rod 413 and the action connecting rod 423 are respectively connected to the upper and lower ends of the drive rack.

[0046] like Figure 16 As shown, the sealing seat 421 further includes a sill sealing strip and a lower pressure seat. The lower pressure seat is located at the bottom of the lower connecting rod 422, and the sill sealing strip is located on the lower pressure seat.

[0047] Furthermore, both the lower pressure seat and the threshold sealing strip have a 7-shaped structure. The front side of the threshold sealing strip is attached to the door panel 11 on the rear side of the door leaf 1, the bottom side of the threshold sealing strip is attached to the threshold 22, and both ends of the threshold sealing strip are attached to the corner blocks on the threshold 22. Through the above settings, the threshold sealing strip completely seals the bottom of the door leaf 1, achieving the effect of moisture and water resistance.

[0048] like Figure 15 As shown, the limiting component 424 further includes a bearing housing, a linear bearing, and a guide shaft. The bearing housing is located on the rear side of the door leaf 1, and the linear bearing is housed within the bearing housing and connected to the sealing seat 421 via the guide shaft. The bottom end of the guide shaft is connected to the sealing seat 421, and its top end is connected to the linear bearing. The linear bearing, housed within the bearing housing, can only perform linear motion, thus restricting the vertical lifting and lowering of the sealing seat 421. Furthermore, the limiting components 424 are arranged in pairs.

[0049] Furthermore, the inner end of the rotating locking head 411 is connected to the side connecting rod 412, and the middle part is movably connected to the door leaf 1. Driven by the side connecting rod 412, the rotating locking head 411 uses the middle part as a fulcrum and its outer end moves to realize the locking and unlocking.

[0050] like Figure 4 , 5 As shown in Figure 6, further, the door leaf 1 includes a door panel 11 and a frame 12. The door panel 11 is located on the front and rear sides of the frame 12, and the locking mechanism 4 is located on the rear door panel 11. The frame 12 includes a crossbeam and a longitudinal beam, and the longitudinal beam is spaced between the crossbeams. Both the crossbeam and the longitudinal beam include a main beam 121 and a reinforcing beam 122, and the reinforcing beam 122 is located in the main beam 121.

[0051] Furthermore, the main beam 121 is a bent steel plate, and the reinforcing beam 122 is a hot-rolled H-beam. The reinforcing beam 122 is located in the inner cavity of the main beam 121 to improve the structural strength.

[0052] like Figure 7 , 8 As shown in Figures 17 and 18, the door frame mechanism 2 further includes a frame 21, a threshold 22, and an anchoring structure 23. The frame 21 is set in the door opening of the wall through the anchoring structure 23, and the threshold 22 is located at the bottom of the frame 21. The frame 21 includes a door frame plate and a door casing plate. The door frame plate is located on the front side of the door casing plate, and a sealing strip is provided on the door frame plate. The anchoring structure 23 includes an anchor plate and an anchor bolt. The anchor plate is connected to the door frame plate and the door casing plate, and the anchor plate is fixedly connected to the wall by the anchor bolt using a rear anchoring method. The anchoring method has the advantages of high fixing strength and high stability. The rear anchoring method improves the construction efficiency of concrete pouring and protective door installation. Moreover, no cooperation is required during construction, which simplifies the operation and reduces the construction difficulty. When the door is locked, the door leaf 1 is in contact with the door frame plate, and the sealing structure 42 is in contact with the threshold 22.

[0053] Furthermore, the frame 21 is roll-formed, which has good structural integrity, can effectively meet the strength requirements of anchoring installation, and also has stronger impact resistance.

[0054] Furthermore, the anchor bolt is an anchoring expanded-base bolt.

[0055] Furthermore, the anchoring structure 23 is provided with a locking seat, and the rotating locking head 411 is located in the locking seat in the anchoring structure 23 when locked.

[0056] like Figure 9 , 17 As shown, the hinge 3 is further fixedly installed on the anchoring structure 23, including a hinge shaft, a shaft seat and a hinge cover. The shaft seat and the hinge cover are provided on the anchor plate, the hinge shaft is movably disposed in the shaft seat, and the door leaf 1 is fixedly connected to the hinge shaft.

[0057] Furthermore, the locking mechanism 4 is provided with an outer cover on the outside, and the outer cover is provided on the door leaf 1.

[0058] Furthermore, the threshold 22 is provided with corner blocks at both ends. When the door is closed and the sealing structure 42 is in contact, the ends of the sealing structure 42 are squeezed by the corner blocks to achieve a seal. The corner blocks are correspondingly provided with the sealing seat 421 and cooperate with each other.

[0059] Furthermore, the corner block is a scalloped block, and the end shape of the threshold sealing strip of the sealing seat 421 matches the corner block.

[0060] When installing this utility model, each module is prefabricated in the factory and then transported to the construction site. First, the door frame mechanism 2 is installed. During operation, the frame 21 is first anchored to the concrete wall through the anchoring structure 23. Then, the threshold 22 is fixed to the bottom concrete using anchoring expansion bolts. After the door frame mechanism 2 is installed, the threshold 22 is flush with the ground and does not affect the passage of personnel and vehicles. Then, the hinge 3 is installed on the anchoring structure 23. After the hinge 3 is installed, the locking mechanism 4 is installed on the back of the door leaf 1, or the locking mechanism 4 is pre-installed on the door leaf 1 directly in the factory. Then, the door leaf 1 is hoisted. In the hoisted state, the door leaf 1 is connected to the hinge 3 to complete the installation. Then, the locking mechanism 4 is tested. After passing the test, the entire installation process is completed.

[0061] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A rear-anchored, thresholdless moisture-proof door, characterized in that: It includes a door leaf (1), a door frame mechanism (2), a hinge (3) and a locking mechanism (4). The door frame mechanism (2) is fixed in the wall. The door leaf (1) is connected to the door frame mechanism (2) through the hinge (3). The locking mechanism (4) is provided on the door leaf (1) and connected to the door frame mechanism (2). The locking mechanism (4) includes a rotary locking structure (41) and a sealing structure (42). The rotary locking structure (41) and the sealing structure (42) are provided on the door leaf (1). The sealing structure (42) is connected to the rotary locking structure (41). When the door is locked, the rotary locking structure (41) is connected to the door frame mechanism (2), and the sealing structure (42) is fitted and sealed to the door frame mechanism (2).

2. A rear-anchored thresholdless moisture-proof door according to claim 1, characterized in that: The rotary locking structure (41) includes a rotary locking head (411), a side connecting rod (412), an upper connecting rod (413), and a drive assembly (414). The drive assembly (414) is mounted on the door leaf (1). The upper connecting rod (413) is connected to the drive assembly (414). The side connecting rod (412) is movably connected to the upper connecting rod (413). The rotary locking head (411) is movably connected to the side connecting rod (412). The sealing structure (42) The device includes a sealing seat (421), a lower connecting rod (422), an action connecting rod (423), and a limiting component (424). The lower connecting rod (422) is connected to the drive component (414) through the action connecting rod (423). The sealing seat (421) is located at the bottom of the lower connecting rod (422). The limiting component (424) is located on the door leaf (1) and is connected to the sealing seat (421). The bottom end of the side connecting rod (412) is connected to the lower connecting rod (422).

3. A rear-anchored thresholdless moisture-proof door according to claim 1, characterized in that: The door leaf (1) includes a door panel (11) and a frame (12). The door panel (11) is located on the front and rear sides of the frame (12), and the locking mechanism (4) is located on the rear door panel (11). The frame (12) includes a crossbeam and a longitudinal beam, and the longitudinal beam is spaced between the crossbeams. Both the crossbeam and the longitudinal beam include a main beam (121) and a reinforcing beam (122), and the reinforcing beam (122) is located in the main beam (121).

4. A rear-anchored thresholdless moisture-proof door according to claim 1, characterized in that: The door frame mechanism (2) includes a frame (21), a threshold (22), and an anchoring structure (23). The frame (21) is set in the door opening of the wall through the anchoring structure (23), and the threshold (22) is set at the bottom of the frame (21). The frame (21) includes a door frame plate and a door casing plate. The door frame plate is set on the front side of the door casing plate, and a sealing strip is provided on the door frame plate. The anchoring structure (23) includes an anchor plate and an anchor bolt. The anchor plate is connected to the door frame plate and the door casing plate, and the anchor plate is fixedly connected to the wall through the anchor bolt. When the door is locked, the door leaf (1) is in contact with the door frame plate, and the sealing structure (42) is in contact with the threshold (22).

5. A rear-anchored thresholdless moisture-proof door according to claim 4, characterized in that: The hinge (3) includes a hinge shaft, a shaft seat and a hinge cover. The shaft seat and the hinge cover are fixedly mounted on the anchor plate. The hinge shaft is movably mounted in the shaft seat. The door leaf (1) is fixedly connected to the hinge shaft.

6. A rear-anchored thresholdless moisture-proof door according to claim 2, characterized in that: The drive assembly (414) includes a handwheel, a drive shaft, a drive gear, a mounting base, and a drive rack. The mounting base is located on the rear side of the door leaf (1). The drive gear is movably mounted in the mounting base. The handwheel is connected to the drive gear via the drive shaft. The drive rack is movably mounted in the mounting base and meshes with the drive gear. The upper connecting rod (413) and the actuating connecting rod (423) are respectively connected to the upper and lower ends of the drive rack.

7. A rear-anchored thresholdless moisture-proof door according to claim 2, characterized in that: The sealing seat (421) includes a threshold sealing strip and a lower pressure seat. The lower pressure seat is located at the bottom of the lower connecting rod (422), and the threshold sealing strip is located on the lower pressure seat.

8. A rear-anchored thresholdless moisture-proof door according to claim 2, characterized in that: The limiting component (424) includes a bearing housing, a linear bearing and a guide shaft. The bearing housing is located on the rear side of the door leaf (1), and the linear bearing is located in the bearing housing and connected to the sealing seat (421) through the guide shaft.

9. A rear-anchored thresholdless moisture-proof door according to claim 1, characterized in that: The locking mechanism (4) is provided with an outer cover on the outside of the door leaf (1).

10. A rear-anchored thresholdless moisture-proof door according to claim 4, characterized in that: The threshold (22) is provided with a corner block, which is correspondingly set with the sealing seat (421) and cooperates with each other.

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