Waterproof door

Abstract

The utility model provides a waterproof door which comprises a fixing structure, a door plate and a sealing strip, an access opening is formed in the middle of the fixing structure, the sealing strip is arranged around the access opening, the door plate is arranged on one side of the fixing structure in a turnover mode, the door plate can abut against the sealing strip to seal the access opening, and the waterproof door is provided with a first rotating shaft and a second rotating shaft. In the door opening state, the distance from the first rotating shaft to the sealing strip is larger than that from the second rotating shaft to the sealing strip. In the door closing process, the door plate rotates forwards around the first rotating shaft, so that a safe distance is formed between the door plate and the sealing strip, and then the door plate rotates forwards around the second rotating shaft, so that the door plate can be in sealed connection with the sealing strip; the sealing structure is good in sealing performance, and the sealing strip can be prevented from being scratched in the rotating process of the door plate.

Description

Technical Field

[0001] The utility model relates to the technical field of flood control at the entrance and exit of underground space, and specifically relates to a waterproof door. Background Art

[0002] When urban waterlogging occurs, effective waterproof measures should be taken at the entrance and exit positions of underground spaces such as underground garages, subway projects, building ground floors, and underground shopping malls for flood control needs. The waterproof measures include: (1) simple and traditional methods such as piling up flood control sandbags and equipping flood control baffles for waterproofing, but the manual handling of flood control sandbags and flood control baffles is time-consuming and laborious; (2) setting sealing strips around the entrance and exit, and setting a rotatable waterproof door on one side of the entrance and exit. Under normal conditions, the waterproof door is in an open state to facilitate the passage of pedestrians or vehicles. When a flood occurs, the waterproof door rotates and presses the sealing strip to block the entrance and exit and prevent flood water from entering.

[0003] For the existing waterproof door, since enough rotating space needs to be reserved at the end of the waterproof door close to the entrance and exit, if the end of the waterproof door is relatively close to the sealing strip, during the closing process of the waterproof door, the end of the waterproof door is likely to scratch the sealing strip, thereby affecting the sealing performance and service life of the sealing strip and easily causing water seepage or leakage; if the end of the waterproof door is relatively far from the sealing strip, after the waterproof door is closed, there will be a gap or poor sealing between the waterproof door and the sealing strip, resulting in a poor sealing effect of the waterproof door. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a waterproof door with good sealing performance and capable of preventing the sealing strip from being scratched during the rotation of the door panel.

[0005] To achieve the above purpose, the utility model provides a waterproof door, including a fixed structure, a door panel, and a sealing strip. An entrance and exit is opened in the middle of the fixed structure. The sealing strip is arranged around the entrance and exit. The door panel is rotatably arranged on one side of the fixed structure. The door panel can abut against the sealing strip to block the entrance and exit. The waterproof door is provided with a first rotating shaft and a second rotating shaft. In the open state, the distance from the first rotating shaft to the sealing strip is greater than the distance from the second rotating shaft to the sealing strip; during the closing process, the door panel first rotates positively around the first rotating shaft, so that there is a safe distance between the door panel and the sealing strip, and then the door panel rotates positively around the second rotating shaft, so that the door panel can be hermetically connected with the sealing strip.

[0006] As can be seen from the above solution, with the above settings, during the door closing process, the door panel first rotates counterclockwise around the first rotation axis, so that the end of the door panel close to the entrance and exit can move away from the sealing strip, forming a safety distance to prevent the door panel from contacting the sealing strip and avoid scratching the sealing strip, which is beneficial to ensuring the sealing performance and service life of the sealing strip; thereafter, the door panel rotates counterclockwise around the second rotation axis, so that the surface of the door panel contacts and presses the sealing strip, which not only seals the entrance and exit, but also can be hermetically connected to the sealing strip to prevent leakage or water leakage.

[0007] A further solution is that during the door opening process, the door panel first rotates reversely around the second rotation axis to separate the door panel from the sealing strip, and then the door panel rotates reversely around the first rotation axis.

[0008] A further solution is that the waterproof door further includes a first driving device, a hinge plate, a first hinge seat and a locking pin. The first driving device can drive the door panel to rotate. The first hinge seat is arranged on one side of the door panel. The hinge plate is movably connected between the first hinge seat and the door panel. The first rotation axis is arranged between the hinge plate and the door panel, and the second rotation axis is arranged between the hinge plate and the first hinge seat; the locking pin is arranged on the door panel and can be detachably connected to the hinge plate. When the locking pin is connected to the hinge plate, the door panel and the hinge plate rotate together around the second rotation axis.

[0009] As can be seen from the above solution, with the above settings, when the door panel rotates counterclockwise around the first rotation axis, the door panel can rotate relative to the hinge plate; when the door panel rotates counterclockwise to 60°, the locking pin is inserted into the hinge plate to connect the door panel and the hinge plate. Thereafter, the door panel and the hinge plate rotate counterclockwise around the second rotation axis to 90°, which is beneficial to realizing the rotation of the door panel along the first rotation axis and switching to the rotation of the door panel around the second rotation axis, and has the advantages of simple structure and convenient operation.

[0010] A further solution is that the hinge plate includes a mounting portion, and a locking hole is formed in the mounting portion; a second driving device is arranged on the door panel, and the second driving device can drive the locking pin to insert into or withdraw from the locking hole.

[0011] As can be seen from the above solution, with the above settings, it is beneficial to realize the detachable connection between the door panel and the hinge plate.

[0012] A further solution is that the mounting portion is provided with a protruding portion on the side facing the door panel, and the protruding portion extends obliquely, and the door panel can abut against the protruding portion.

[0013] As can be seen from the above solution, with the above settings, when the door panel is in a horizontal state, the door panel can abut against the corner of the first end of the protruding portion. When the door panel rotates counterclockwise to 60°, the door panel can abut against the end face of the first end of the protruding portion. On the one hand, it plays a role in supporting the door panel, and on the other hand, it is beneficial to ensure that the locking pin can be aligned with the locking hole, facilitating the insertion of the locking pin into the locking hole.

[0014] A further solution is that the hinge plate further includes an extension portion that extends radially along the first rotation axis or the second rotation axis; the waterproof door further includes a resistance member disposed on the extension portion, and the resistance member can be a counterweight or an elastic member.

[0015] As can be seen from the above solution, with the above arrangement, when the door panel rotates counterclockwise, the resistance member can prevent the hinge plate from moving together with the door panel.

[0016] A further solution is that the sealing strip includes a first sealing section, a second sealing section, and a third sealing section connected in sequence. The first sealing section, the second sealing section, and the third sealing section are integrally formed. The first sealing section and the third sealing section are respectively disposed on opposite sides of the entrance and exit, and the second sealing section is disposed on the lower side of the entrance and exit.

[0017] As can be seen from the above solution, with the above arrangement, the sealing strip is a continuous sealing strip and extends along the periphery of the entrance and exit. Compared with the solution of using three disconnected sealing strips respectively disposed on the bottom side and the left and right sides of the entrance and exit, it can effectively prevent moisture from passing through the gap between two adjacent sealing strips, and has the advantage of better sealing effect.

[0018] A further solution is that the door panel is provided with a first end and a second end, and the first rotation axis is disposed between the first end and the second end of the door panel; in the open door state, the first end of the door panel is disposed above the third sealing section.

[0019] A further solution is that two relief grooves are formed in the first end of the door panel. The relief grooves are recessed from the end face of the first end, and the two relief grooves are respectively disposed corresponding to the first sealing section and the second sealing section.

[0020] As can be seen from the above solution, with the above arrangement, the first sealing end and the second sealing end can enter the corresponding relief grooves, so that the end face of the first end of the door panel can be as close as possible to the fixed structure without colliding with the sealing strip, which is beneficial to reducing the gap between the end face of the first end of the door panel and the fixed structure and preventing garbage and sundries from entering below the door panel.

[0021] A further solution is that a floor groove is formed in the lower part of the entrance and exit. The floor groove is provided with a notch facing upward, and the door panel is disposed in the notch, and the door panel can block or protrude from the notch.

[0022] As can be seen from the above solution, with the above arrangement, when the door panel is in a horizontal state, it is convenient for people or vehicles to walk freely on the door panel; when the panel protrudes upward from the notch, it can be used to block the entrance and exit and play a role in flood control. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of the fixed structure in an embodiment of the present invention.

[0024] Figure 2 It is a structural diagram when the door panel is in a horizontal state in the embodiment of the present utility model.

[0025] Figure 3 It is Figure 2 an enlarged view of part A in

[0026] Figure 4 It is a structural diagram when the door panel is at 60° in the embodiment of the present utility model.

[0027] Figure 5 It is Figure 4 an enlarged view of part B in

[0028] Figure 6 It is a structural diagram when the door panel is at 90° in the embodiment of the present utility model.

[0029] Figure 7 It is a side view when the door panel is in a horizontal state in the embodiment of the present utility model.

[0030] Figure 8 It is a side view when the door panel is at 60° in the embodiment of the present utility model.

[0031] Figure 9 It is a side view when the door panel is at 90° in the embodiment of the present utility model.

[0032] Figure 10 It is a structural diagram of the hinge plate in the embodiment of the present utility model.

[0033] Figure 11 It is a schematic diagram when the resistance member is a counterweight in the embodiment of the present utility model.

[0034] The present utility model will be further described below in conjunction with the drawings and embodiments. Specific Embodiments

[0035] Refer to Figure 1 and Figure 3 In this embodiment, a waterproof door provided includes a fixed structure 1, a door panel 3, and a sealing strip 2. The fixed structure 1 is a retaining wall or door frame provided at the exit or entrance of an underground space. An entrance / exit 11 for pedestrians or vehicles to enter and exit is provided in the middle of the fixed structure 1. The sealing strip 2 is protrudingly provided around the entrance / exit 11, and the sealing strip 2 is specifically provided on the lower side and the left and right sides of the entrance / exit 11.

[0036] The sealing strip 2 is provided with a "U" - shaped structure. The sealing strip 2 includes a first sealing section 21, a second sealing section 22 and a third sealing section 23 which are connected in sequence. The first sealing section 21 and the third sealing section 23 are respectively arranged on the left and right sides of the entrance - exit 11, and the second sealing section 22 is arranged on the lower side of the entrance - exit 11. The first sealing section 21, the second sealing section 22 and the third sealing section 23 are integrally formed to avoid gaps between adjacent two sealing sections.

[0037] The door panel 3 is rotatably arranged on one side of the fixed structure 1. Preferably, the door panel 3 is rotatably arranged on the lower side of the fixed structure 1. In the normal state, the door panel 3 is basically flush with the ground of the fixed structure 1, which is convenient for pedestrians or vehicles to pass. At this time, the door panel 3 is located above the second sealing section 23. During flood control, the door panel 3 can be turned upwards to block the entrance - exit 11. At this time, the door panel 3 presses the sealing strip 2 to block the gap between the door panel 3 and the fixed structure 1, preventing flood water from passing through the entrance - exit 11. The door panel 3 and the sealing strip 2 can be arranged on the side of the fixed structure 1 facing the flood, or can be arranged on the side of the fixed structure 1 facing away from the flood. In this embodiment, the former is preferred.

[0038] In this embodiment, the ground of the fixed structure 1 is horizontally arranged. At this time, in the normal state, the door panel 3 is in a horizontal state. During flood control, the door panel 3 can be turned upwards by 90° to close the flood - proof door.

[0039] In another embodiment, the ground of the fixed structure can be arranged to slope downwards. At this time, in the open - door state, the door panel is flush with this ground, that is, the door panel extends obliquely downwards, and the door panel forms a negative angle with the horizontal plane, such as - 10°, - 20° or - 30°, etc. During flood control, the angle by which the door panel is turned upwards is greater than 90°, with the criterion of being able to close the flood - proof door.

[0040] In yet another embodiment, the ground of the fixed structure can be arranged to slope upwards. At this time, in the open - door state, the door panel is flush with this ground, that is, the door panel extends obliquely upwards, and the door panel forms an acute angle with the horizontal plane, such as 5°, 10°, 20°, etc. During flood control, the angle by which the door panel is turned upwards is less than 90°, with the criterion of being able to close the flood - proof door.

[0041] Combined Figure 3 、 Figures 7 to 9 In this embodiment, the flood - proof door is provided with a first rotating shaft 4 and a second rotating shaft 5 which are arranged parallel to each other. The door panel 3 is provided with a first end 32 and a second end 33. The first rotating shaft 4 is arranged between the first end 32 and the second end 33, and the distance from the first rotating shaft 4 to the first end 32 of the door panel 3 is less than the distance from the first rotating shaft 4 to the second end 33 of the door panel 3. When the door panel 3 rotates around the first rotating shaft 4, the rotating directions of both ends of the door panel 3 are opposite. In this embodiment, the first end 32 of the door panel 3 refers to the end of the door panel 3 close to the fixed structure 1; the second end 33 of the door panel 3 refers to the end of the door panel 3 far from the fixed structure 1.

[0042] When the door panel 3 is in a horizontal state when the door is opened, the distance L1 from the first rotating shaft 4 to the sealing strip 2 is greater than the distance L2 from the second rotating shaft 5 to the sealing strip 2 at this time.

[0043] When it is necessary to close the door, the door panel 3 first rotates positively around the first rotating shaft 4, so that there is a safety distance between the first end 32 of the door panel 3 and the sealing strip 2. This safety distance means that when the door panel 3 rotates, the door panel 3 does not contact the sealing strip 2, avoiding scratching the sealing strip 2, which is beneficial to ensuring the sealing performance and service life of the sealing strip 2; when the door panel 3 rotates positively by a first preset angle, the first preset angle is preferably 60°, the door panel 3 drives the first rotating shaft 4 to start rotating positively around the second rotating shaft 5 together, so that the door panel 3 can contact and squeeze the sealing strip 2, realizing the sealed connection between the door panel 3 and the fixed structure 1, ensuring the effective blocking of the entrance 11 and preventing floods from passing through the entrance 11. The positive rotation in this embodiment is counterclockwise rotation, and correspondingly, the reverse rotation is clockwise rotation.

[0044] When it is necessary to open the door, the door panel 3 drives the first rotating shaft 4 to rotate reversely around the second rotating shaft 5 by a second preset angle. The sum of the second preset angle and the first preset angle is 90°, and the second preset angle is preferably 30°, so that the door panel 3 is separated from the sealing strip 2; then the door panel 3 continues to rotate reversely around the first rotating shaft 4 until the door panel 3 rotates to a horizontal state.

[0045] Combined Figures 2 to 6 with, in order to realize the flipping of the door panel 3, the floodgate of this embodiment further includes a first driving device 6, a hinge plate 7, a first hinge seat 8, a locking pin 9, a second driving device 10 and a second hinge seat 20.

[0046] There are two first hinge seats 8 and hinge plates 7 respectively. The two first hinge seats 8 are respectively arranged on the left and right sides of the door panel 3. The hinge plate 7 is movably connected between the corresponding first hinge seat 8 and the door panel 3. The first rotating shaft 4 is arranged between the hinge plate 7 and the door panel 3, and the second rotating shaft 5 is arranged between the hinge plate 7 and the first hinge seat 8, so that the door panel 3 can rotate relative to the first hinge seat 8, can also rotate relative to the hinge plate 7, and can also rotate synchronously with the hinge plate 7. Specifically:

[0047] The door panel 3 is provided with a first mounting hole on the side wall facing the hinge plate 7.

[0048] The articulated plate 7 includes a mounting portion 71 and an extension portion 72. The mounting portion 71 is configured as an approximately triangular structure. The extension portion 72 extends from one side of the mounting portion 71 away from the fixed structure 1, and the extension direction of the extension portion 72 is perpendicular to the first rotation axis 4 or the second rotation axis 5. The upper part of the mounting portion 71 is provided with the first rotation axis 4. One end of the first rotation axis 4 is inserted into the first mounting hole and is in clearance fit with the first mounting hole, so that the door panel 3 can rotate relative to the articulated plate 7 around the first rotation axis 4. A second mounting hole is formed in the lower part of the mounting portion 71, and the axial direction of the second mounting hole is parallel to the axial direction of the first mounting hole.

[0049] The first hinge seat 8 is provided with the second rotation axis 5. The second rotation axis 5 extends horizontally. The second rotation axis 5 is inserted into the second mounting hole of the articulated plate 7, and the second rotation axis 5 is in clearance fit with the second mounting hole, so that the articulated plate 7 can rotate relative to the first hinge seat 8 around the second rotation axis 5.

[0050] In order to drive the door panel 3 to flip, the number of the first driving devices 6 and the second hinge seats 20 are both set to two. The first driving device 6 in this embodiment is preferably a cylinder or a hydraulic cylinder. The first driving device 6 is inclinedly arranged below the door panel 3. The first end of the first driving device 6 is hinged to the bottom wall of the door panel 3, and the second end of the first driving device 6 is hinged to the corresponding second hinge seat 20. When the first driving device 6 makes a telescopic movement, it can drive the door panel 3 to flip up and down.

[0051] In order to realize the rotation of the door panel 3 around the first rotation axis 4 and switch to rotation around the second rotation axis 5, the door panel 3 in this embodiment is detachably connected to the articulated plate 7 through a locking pin 9. Specifically:

[0052] The door panel 3 is provided with a locking pin 9 and a second driving device 10. The bottom wall of the door panel 3 is provided with a receiving groove for receiving the locking pin 9 and the second driving device 10. The receiving groove is recessed in the bottom wall of the door panel 3. Both the locking pin 9 and the second driving device 10 are arranged in the receiving groove, and one end of the locking pin 9 protrudes from the side wall of the door panel 3.

[0053] A locking hole 711 is further formed in the mounting portion 71. The locking hole 711 is arranged on one side of the first rotation axis 4 and is correspondingly arranged with the locking pin 9. The second driving device 10 can drive the locking pin 9 to insert into or withdraw from the locking hole 711 to realize the detachable connection between the door panel 3 and the articulated plate 7. In this embodiment, the locking pin 9 is inserted into the locking hole 711 movably along its axial direction. In other embodiments, the locking pin can also be inserted into the locking hole rotatably around one of its ends. The second driving device 10 can be a cylinder or a hydraulic cylinder.

[0054] When the locking pin 9 is connected to the articulated plate 7, the door panel 3 can rotate relative to the first hinge seat 8 around the second rotation axis 5 together with the articulated plate 7.

[0055] Combined with Figure 3 、Figure 5 and Figure 10 In order to facilitate the alignment of the locking pin 9 with the locking hole 711, a protruding portion 712 is provided on one side of the mounting portion 71 facing the door panel 3. The protruding portion 712 protrudes from the side wall of the mounting portion 71 facing the door panel 3, and the protruding portion 712 extends obliquely downward in the direction of the extension portion 72.

[0056] When the door panel 3 is in a horizontal state, the bottom wall of the door panel 3 can abut against the corner 7121 of the first end of the protruding portion 712; when the door panel 3 rotates counterclockwise to the first preset angle of 60°, the bottom wall of the door panel 3 can abut against the end face 7122 of the first end of the protruding portion 712. At this time, the locking hole 711 is directly opposite to the locking pin 9, facilitating the accurate insertion of the locking pin 9 into the locking hole 711.

[0057] Combined with Figure 4 、 Figure 6 and Figure 10 In this embodiment, the hinge plate 7 further includes an extension portion 72. The extension portion 72 extends from the mounting portion 71 away from the fixed structure 1, and the extension portion 72 extends along the radial direction of the first rotation axis 4 or the second rotation axis 5.

[0058] The waterproof door further includes a resistance member. The resistance member is provided at one end of the extension portion 72 away from the mounting portion 71. When the door panel 3 rotates counterclockwise to 60°, the resistance member can prevent the hinge plate 7 from rotating together with the door panel 3.

[0059] The resistance member can be an elastic member 30a. A fixing portion (not shown in the figure) is provided below the hinge plate 7. The elastic member 30a in this embodiment is a component capable of elastic expansion and contraction. The elastic member 30a can be a spring tensioner, a gas spring or a tension spring. The elastic member 30a is obliquely arranged. The first end of the elastic member 30a is hinged to the fixing portion, and the second end of the elastic member 30a is hinged to the extension portion 72. When the door panel 3 and the hinge plate 7 rotate together from 60° to 90°, the elastic member 30a is in an extended state; when the door panel 3 and the hinge plate 7 rotate together from 90° to 60°, the elastic member 30a is in a contracted state.

[0060] The resistance member can also be a counterweight 30b. As Figure 11 shown, the counterweight 30b is connected to the extension portion 72 by a rope or a chain.

[0061] In Figure 2 and Figure 3 , two relief grooves 31 are provided on the door panel 3. The relief grooves 31 are recessed from the end face of the first end 32 of the door panel 3. The two relief grooves 31 are respectively arranged corresponding to the first sealing section 21 and the second sealing section 22 to avoid the sealing strip 2, so that the end face of the first end 32 of the door panel 3 can be as close as possible to the fixed structure 1, which is beneficial to reducing the gap between the end face of the door panel 3 and the fixed structure 1 and preventing garbage and sundries from entering.

[0062] The waterproof door of this embodiment can be set on the ground or hidden below the ground. This embodiment preferably adopts the latter. A ground groove (not shown in the figure) is opened at the lower part of the entrance 11. The ground groove is recessed from the ground of the entrance 11 and has a notch facing upwards.

[0063] The first driving device 6, the first hinge seat 8, the second hinge seat 20, the fixing part and the hinge plate 7 are all arranged in the ground groove. When the door panel 3 is in a horizontal state, the door panel 3 blocks the notch of the ground groove. At this time, pedestrians or vehicles can pass on the top wall of the door panel 3. When the door panel 3 rotates upwards, the door panel 3 can protrude from the notch of the ground groove to block the entrance 11.

[0064] In summary, through the above settings of the present utility model, during the closing process of the door, the door panel 3 first rotates counterclockwise around the first rotation axis 4, so that one end of the door panel 3 close to the entrance 11 can be far away from the sealing strip 2, forming a safety distance to prevent the door panel 3 from contacting the sealing strip 2 and avoid scratching the sealing strip 2, which is beneficial to ensuring the sealing performance and service life of the sealing strip 2. Thereafter, the door panel 3 rotates counterclockwise around the second rotation axis 5, so that the surface of the door panel 3 contacts and presses the sealing strip 2, which not only blocks the entrance 11 but also can be hermetically connected with the sealing strip 2 to prevent leakage or water leakage.

[0065] Finally, it should be emphasized that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A waterproof door, comprising a fixing structure, a door panel and a sealing strip. The fixing structure is provided with an entrance and exit, the sealing strip is arranged around the entrance and exit, the door panel is rotatably arranged on one side of the fixing structure, and the door panel can abut against the sealing strip to block the entrance and exit. It is characterized in that: The waterproof door is provided with a first rotating shaft and a second rotating shaft. In the open door state, the distance from the first rotating shaft to the sealing strip is greater than the distance from the second rotating shaft to the sealing strip; During the closing process, the door panel first rotates positively around the first rotating shaft, so that there is a safety distance between the door panel and the sealing strip, and then the door panel rotates positively around the second rotating shaft, so that the door panel can be hermetically connected to the sealing strip.

2. The waterproof door according to claim 1, characterized in that: During the opening process, the door panel first rotates reversely around the second rotating shaft, so that the door panel is separated from the sealing strip, and then the door panel rotates reversely around the first rotating shaft.

3. The waterproof door according to claim 1, characterized in that: The waterproof door further comprises a first driving device, a hinge plate, a first hinge seat and a locking pin. The first driving device can drive the door panel to rotate. The first hinge seat is arranged on one side of the door panel. The hinge plate is movably connected between the first hinge seat and the door panel. The first rotating shaft is arranged between the hinge plate and the door panel, and the second rotating shaft is arranged between the hinge plate and the first hinge seat; The locking pin is arranged on the door panel and can be detachably connected to the hinge plate. When the locking pin is connected to the hinge plate, the door panel and the hinge plate rotate together around the second rotating shaft.

4. The waterproof door according to claim 3, characterized in that: The hinge plate comprises a mounting portion, and a locking hole is formed in the mounting portion; A second driving device is arranged on the door panel, and the second driving device can drive the locking pin to insert into or withdraw from the locking hole.

5. The waterproof door according to claim 4, characterized in that: The mounting portion is provided with a protruding portion on the side facing the door panel, the protruding portion extends obliquely, and the door panel can abut against the protruding portion.

6. The waterproof door according to claim 3, characterized in that: The hinge plate further comprises an extension portion, and the extension portion extends along the radial direction of the first rotating shaft or the second rotating shaft; The waterproof door further comprises a resistance member, the resistance member is arranged on the extension portion, and the resistance member can be a counterweight or an elastic member.

7. The waterproof door according to claim 1, characterized in that: The sealing strip comprises a first sealing section, a second sealing section and a third sealing section which are connected in sequence. The first sealing section, the second sealing section and the third sealing section are integrally formed. The first sealing section and the third sealing section are respectively arranged on opposite sides of the entrance and exit, and the second sealing section is arranged on the lower side of the entrance and exit.

8. The waterproof door according to claim 7, characterized in that: The door panel is provided with a first end and a second end, and the first rotating shaft is arranged between the first end and the second end of the door panel; In the open door state, the first end of the door panel is arranged above the third sealing section.

9. The waterproof door according to claim 8, wherein: Two avoidance grooves are formed in the first end of the door panel, the avoidance grooves are recessed in the end face of the first end, and the two avoidance grooves are respectively arranged corresponding to the first sealing section and the second sealing section.

10. The waterproof door according to claim 1, wherein: A floor groove is formed in the lower part of the entrance and exit, a notch is formed upward in the floor groove, the door panel is arranged in the notch, and the door panel can block or protrude from the notch.

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