Waterproof door device

Abstract

The present invention provides a waterproof door device in which a door body moves along a predetermined route to seal openings in a building and prevent water from entering, without requiring manual transport and installation of waterproof doors. [Solution] A waterproof door device 1 for preventing water from entering the interior of a building S through an opening P provided in the wall W of the building S when the water level rises, comprising a door body 10 for opening and closing an opening P provided in the wall W of the building S, and a driving means for applying a driving force to the door body to move the door body along a predetermined path parallel to the wall, characterized in that there exists a closed position on the path in which the door body covers the opening in a front view, and an open position in which the opening is exposed in a front view.

Description

Technical Field

[0001] The present invention relates to a waterproof door device for preventing water from entering the interior of a building when the water level rises.

Background Art

[0002] In recent years, in addition to heavy rain caused by the activation of typhoons and fronts, heavy rain that falls violently in a short period of time in a narrow area (so-called guerrilla heavy rain) has been observed in various places, mainly in urban areas, due to the effects of climate change and the heat island phenomenon, and many flood damage reports have been received. Among them, entrances to underground spaces such as subways, underground shopping arcades, underground parking lots, and underground elevators, and entrances to living spaces such as condominiums, office buildings, public facilities, and shopping centers are particularly severely damaged. Also, even outside heavy rain, the water level rises due to factors such as high tides, tsunamis, and snowmelt. And there are cases where the water level rises up to near the windows of a building. In such cases, the risk of water entering the interior of the building from the windows increases.

[0003] Therefore, a waterproof door for preventing water from entering through windows of a building during floods is known (see Patent Document 1). This waterproof door is configured to prevent water from entering through the window by installing it outside the window each time a flood occurs.

[0004] However, in order to waterproof using the waterproof door described in Patent Document 1, it is necessary to carry the waterproof door by hand, apply the waterproof door to the window outside the building, and further install members for fixing. That is, there is a problem that a person is exposed to danger because it is necessary for a person to work outdoors for a long time while the water level is rising.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] In view of the above problems, the present invention aims to provide a waterproof door device in which a door body moves along a predetermined route to seal an opening in a building and prevent water from entering, without requiring manual transport and installation of a waterproof door. [Means for solving the problem]

[0007] The waterproof door device according to the present invention was made to solve the above problems, and is a waterproof door device that prevents water from entering the interior through an opening provided in the wall of a building when the water level rises, and comprises a door body that opens and closes an opening provided in the wall of a building, and a driving means that applies a driving force to the door body and moves the door body along a predetermined path parallel to the wall, characterized in that there exists a closed position on the path in which the door body covers the opening in a front view, and an open position in which the opening is exposed in a front view.

[0008] Another waterproof door device according to the present invention is further characterized by comprising a compression means that presses the door body toward the wall as the door body approaches the closed position.

[0009] Another waterproof door device according to the present invention is characterized in that the path extends in the vertical direction, the closed position is below the open position, and the driving means has a screw jack coupled to the door body.

[0010] Another waterproof door device according to the present invention is characterized in that the driving means further comprises a drive wheel for inputting torque and a transmission path for transmitting torque from the drive wheel to the screw jack.

[0011] Another waterproof door device according to the present invention is characterized in that the driving means further comprises a clutch arranged in the transmission path that selectively switches between transmitting or disconnecting torque.

[0012] Another waterproof door device according to the present invention is characterized in that the driving means further includes a brake that applies friction to the rotation of a rotating shaft that constitutes the transmission path and transmits torque. [Effects of the Invention]

[0013] According to the present invention, a waterproof door device can be provided in which a door body that moves along a predetermined path closes an opening in a building, thereby preventing water from entering. [Brief explanation of the drawing]

[0014] [Figure 1] In a waterproof door device according to an embodiment of the present invention, the diagram shows the door body in the open position, where (a) is a front view and (b) is a view taken along the arrow AA in (a). [Figure 2] In a waterproof door device according to an embodiment of the present invention, the diagram shows the door body in the closed position, where (a) is a front view and (b) is a view taken along arrow BB in (a). [Figure 3] This is a magnified view of the area around the door in Figure 2(b). [Figure 4] This is a cross-sectional view showing an enlarged view of the CC section in Figure 2(a). [Figure 5] This figure shows the driving means of a waterproof door device according to an embodiment of the present invention, where (a) is a front view, (b) is a view taken along the arrow DD in (a), and (c) is a view taken along the arrow EE in (a). [Figure 6] This is a schematic front cross-sectional view showing the clutch of the driving means of a waterproof door device according to an embodiment of the present invention. [Figure 7] This is a schematic front cross-sectional view showing the brake of the driving means of a waterproof door device according to an embodiment of the present invention. [Figure 8] This figure shows the door body of a waterproof door device according to an embodiment of the present invention, where (a) is a front view and (b) is a cross-sectional view showing the FF section of (a). [Modes for carrying out the invention]

[0015] Next, an embodiment of the waterproof door device to which the present invention is applied will be described with reference to the drawings. Note that the embodiments described below are preferred embodiments of the present invention, and thus various technically preferable limitations are imposed. However, the scope of the present invention is not limited to these aspects unless otherwise specifically stated in the following description to limit the present invention.

[0016] An embodiment of the waterproof door device according to the present invention will be described based on FIGS. 1 to 8. FIG. 1 is a view showing a state in which the door body is in an open position in the waterproof door device according to an embodiment of the present invention, where (a) is a front view and (b) is a cross-sectional view taken along the line A-A of (a). FIG. 2 is a view showing a state in which the door body is in a closed position in the waterproof door device according to an embodiment of the present invention, where (a) is a front view and (b) is a cross-sectional view taken along the line B-B of (a). FIG. 3 is an enlarged view showing the vicinity of the door body in FIG. 2(b). FIG. 4 is an enlarged cross-sectional view of the C-C cross-section of FIG. 2(a). FIG. 5 is a view showing the driving means of the waterproof door device according to an embodiment of the present invention, where (a) is a front view, (b) is a cross-sectional view taken along the line D-D of (a), and (c) is a cross-sectional view taken along the line E-E of (a). FIG. 6 is a front partial cross-sectional view schematically showing a clutch of the driving means of the waterproof door device according to an embodiment of the present invention. FIG. 7 is a front partial cross-sectional view schematically showing a brake of the driving means of the waterproof door device according to an embodiment of the present invention. FIG. 8 is a view showing the door body of the waterproof door device according to an embodiment of the present invention, where (a) is a front view and (b) is a cross-sectional view of the F-F cross-section of (a).

[0017] First, the configuration of the waterproof door device 1 according to the present embodiment will be described based on FIGS. 1 and 2. The waterproof door device 1 is installed outside the building S and is adjacent to the wall W. The waterproof door device 1 is configured to prevent water from entering the interior of the building S through the opening P provided in the wall W of the building S when the water level rises. Note that the window glass, sash, etc. arranged in the opening P are omitted in all the figures. Further, the waterproof door device 1 has a rotating shaft, and they are rotatably supported by bearings, but the bearings are omitted in all the figures.

[0018] The waterproof door device 1 includes, as main components, a door body 10 and a driving means 30. The door body 10 is movable along a path parallel to the wall W by the driving means 30. In the present embodiment, this path extends in the vertical direction, and there are an open position and a closed position on this path. When the door body 10 is in the open position, as shown in FIG. 1, the door body 10 does not cover the opening P in a front view, and the opening P is exposed. When the door body 10 is in the closed position, as shown in FIG. 2, the door body 10 covers the opening P in a front view. The door body 10 has a rectangular shape in a front view and has a sufficient area to cover the opening P in the closed position. The details of the structure of the door body 10 will be described later. In the present embodiment, the closed position is below the open position, and when the door body 10 is in the open position, as shown in FIG. 1, the door body 10 is located above the opening P.

[0019] In the present embodiment, the waterproof door device 1 has column members 21, 22 that extend vertically. The column members 21, 22 are coupled to the wall W and are each located outside the opening P in the left-right direction in a front view. The column members 21, 22 have a C-shaped cross-section and have grooves extending in the longitudinal direction, and the left and right ends of the door body 10 are accommodated in these grooves. A driving means 30 described later is coupled to the column members 21, 22, and the column members 21, 22 serve to transmit the load of the door body 10 to the building S. Further, a pressing means 40 described later is coupled to the column members 21, 22.

[0020] The driving means 30 is a means for moving the door body 10. In this embodiment, the driving means 30 has a pair of screw jacks 31, 31. The screw jack 31 has a screw shaft 32 arranged to extend vertically, a jack body 33 that rotates the screw shaft 32, and a nut 34 fitted onto the screw shaft 32 and moving as the screw shaft 32 rotates. The jack bodies 33, 33 are connected to column members 21, 22, respectively. The nut 34 is connected to the door body 10. That is, the door body 10 is suspended by the screw shafts 32, 32. As the jack body 33 rotates the screw shaft 32, the door body 10 moves vertically via the nut 34. The screw jacks 31 can be selected arbitrarily, but it is also possible to use a type of screw jack 31 that does not self-lock, such as a ball screw jack or a screw shaft 32 that is a high-lead trapezoidal screw. The torque that rotates the screw shaft 32 is transmitted from the drive wheel 35 to the screw jack 31 via the transmission path R. Details of the transmission path R and the driving means 30 will be described later.

[0021] Next, the compression means 40 provided in the waterproof door device 1 in this embodiment will be described with reference to Figure 3. The waterproof door device 1 has a compression means 40 that presses the door body 10 toward the wall W as the door body 10 moves and approaches the closed position. As shown in Figure 3, the compression means 40 has wedges 41 and 43 connected to the column member 21, and wedges 42 and 44 connected to the door body 10 at a position opposite to the column member 21. Wedges 41 and 42 are positioned above the door body 10, and wedges 43 and 44 are positioned below the door body 10. In Figure 3, wedges 41, 42, 43, and 44 all have a slope that inclines to the right from top to bottom. When the door body 10 is in the closed position, wedges 41 and 42 and wedges 43 and 44 are in close contact via their respective slopes. In other words, as the door body 10 moves from the open position to the closed position, the wedges 41, 42, 43, and 44 press the door body 10 against the wall W. Although the above description has focused on wedges 41, 42, 43, and 44 installed at the column member 21, wedges with a similar configuration are also provided at the column member 22. Furthermore, the positions of wedges 41, 42, 43, and 44 can be arbitrarily set as long as wedge 41 and wedge 42 engage and wedge 43 and wedge 44 engage in the closed position.

[0022] Next, the watertightness between the door body 10 and the wall W will be explained based on Figures 3 and 4. As shown in Figures 3 and 4, the wall W is provided with a frame-shaped sealing frame 51 that protrudes so as to surround the opening P. The door body 10 also has a watertight material 52 provided in an annular shape adjacent to its edge. When the door body 10 is in the closed position, the watertight material 52 faces the sealing frame 51 (see Figure 3) or the flange 21a of the column member 21 (see Figure 4). At the position of the column member 22, symmetrically to Figure 4, the watertight material 52 faces the flange of the column member 22. When the door body 10 is pressed against the wall W by the compression means 40, the watertight material 52 and the sealing frame 51 and the flanges of the column members 21 and 22 come into close contact, thereby making the entire circumference of the opening P watertight. The material of the watertight material 52 can be set arbitrarily, but a material that can be elastically deformed to a moderate degree is preferred. Furthermore, a plate can be appropriately provided on the door body 10 to suppress the elastic deformation of the watertight material 52 when it is pressed down.

[0023] Next, the details of the drive mechanism 30 will be explained based on Figure 5. As mentioned above, the door body 10 is driven by a screw jack 31. Here, the transmission path through which torque for driving the door body 10 is transmitted from the drive wheel 35 to the screw jack will be explained in detail. As shown in Figure 5, the transmission path R for transmitting torque includes rotating shafts 36a, 36b, 36c, sprockets 37a, 37b, 37c, 37d, chains 38a, 38b, and a clutch 310. The rotating shaft 36a connects the drive wheel 35 and sprocket 37a. Chains 38a are wound around sprockets 37a and sprocket 37b. The rotating shaft 36b connects sprocket 37b and sprocket 37c via the clutch 310. Chains 38b are wound around sprockets 37c and sprocket 37d. A rotating shaft 36c is connected to the sprocket 37d, and the rotating shaft 36c constitutes the input shaft of the jack bodies 33, 33 of the two screw jacks 31, 31. In the following description, the rotation direction of the rotating shaft 36, the sprocket 37, and the screw shaft 32 of the screw jack 31 will be referred to as forward rotation when the door body 10 rises, and as reverse rotation when the door body 10 descends.

[0024] This section describes the operation of raising the door body 10. Torque is input when a person rotates the drive wheel 35 in the forward direction, and this torque is transmitted to the screw jack 31. The drive wheel 35 is provided with a handle 35a, and a person can rotate the drive wheel 35 by gripping the handle 35a. The torque input to the drive wheel 35 is transmitted to the rotating shaft 36a, and then from the rotating shaft 36a to the sprocket 37a. A brake 320 is interposed on the rotating shaft 36a, but the configuration and operation of the brake 320 will be described later. The torque transmitted to the sprocket 37a is transmitted to the sprocket 37b via the chain 38a, and then to the clutch 310 via the rotating shaft 36b.

[0025] The clutch 310 can selectively switch between transmitting or disengaging torque. Details of the clutch 310 will be described later. When the clutch 310 transmits torque, the torque from the rotating shaft 36b is transmitted to the sprocket 37c. The torque transmitted to the sprocket 37c is transmitted to the sprocket 37d via the chain 38b. The torque transmitted to the sprocket 37d is transmitted to the rotating shaft 36c and input to the two jack bodies 33, 33.

[0026] When the rotating shaft 36c connected to the jack body 33 rotates in the forward direction, the screw shaft 32 rotates in the forward direction, and the nut 34 fitted to the screw shaft 32 moves upward. The two nuts 34, 34 on the left and right are configured to move synchronously, which causes the door body 10 to rise.

[0027] Next, the details of the clutch 310 will be explained with reference to Figure 6. The clutch 310 is an element that can selectively switch between transmitting or disconnecting torque, and specifically, in this embodiment, a known component called a "torque keeper" (manufactured by Tsubakimoto Chain Co., Ltd.) is used. The clutch 310 using the "torque keeper" has a hub 311, an AF flange 312, and an adjustment nut 313 as its main elements. The torque acting on the hub 311 is transmitted to the AF flange 312 via friction between the hub 311 and the AF flange 312. The friction between the hub 311 and the AF flange 312 can be adjusted by the adjustment nut 313. When the adjustment nut 313 is tightened, strong friction is generated between the hub 311 and the AF flange 312, and torque is transmitted from the hub 311 to the AF flange 312 without slipping. When the adjustment nut 313 is loosened, no friction is generated between the hub 311 and the AF flange 312, causing rotation to slip, and the torque from the hub 311 to the AF flange 312 is disconnected. An adjustment handle 314 is attached to the adjustment nut 313, and by turning the adjustment handle 314, torque transmission and disconnection can be switched. A rotating shaft 36b is attached to the hub 311, and a sprocket 37c is attached to the AF flange 312. Therefore, the clutch 310 can selectively switch between transmitting or disconnecting torque between the rotating shaft 36b and the sprocket 37c.

[0028] When the door body 10 is in a position higher than the closed position, its own weight causes the rotating shaft 36 and sprocket 37 to rotate in the opposite direction. In particular, in the case of a screw jack 31 of a type that does not self-lock, such as a ball screw jack or a screw shaft 32 with a high-lead trapezoidal screw, the torque that attempts to rotate the rotating shaft 36 and sprocket 37 in the opposite direction is transmitted through the transmission path to the drive wheel 35 without being absorbed by friction, and there is a risk that the drive wheel 35 will rotate in the opposite direction. If the torque transmission is cut off by the clutch 310, the torque that attempts to rotate in the opposite direction will not be transmitted to the drive wheel 35, and the reverse rotation of the drive wheel 35 can be prevented. At this time, the door body 10 will descend by its own weight. That is, if the door body 10 is in the open position, for example, by operating the adjustment handle 314, it is possible to lower the door body 10 by its own weight and move it to the closed position.

[0029] Next, the brake 320 will be explained based on Figure 7. The brake 320 is an element that applies friction to the rotation of the rotating shaft 36a, and specifically, like the clutch 310, it employs a known component called a "torque keeper" (manufactured by Tsubakimoto Chain Co., Ltd.). The brake 320 using the "torque keeper" has a hub 321, an AF flange 322, and an adjustment nut 323 as its main components. The torque acting on the hub 321 is transmitted to the AF flange 322 via friction between the hub 321 and the AF flange 322, and the friction between the hub 321 and the AF flange 322 can be adjusted by the adjustment nut 323. The rotating shaft 36a is coupled to the hub 321, and the limiting plate 92 is coupled to the AF flange 312. The base 91 coupled to the column member 22 and the lower end of the limiting plate 92 are only a very small distance apart. Therefore, the AF flange 312 cannot rotate in effect. In other words, the brake 320 can apply friction to the rotation of the rotating shaft 36a connected to the hub 321, and the strength of the applied friction can be adjusted by adjusting the adjustment nut 323.

[0030] In the case of a screw jack 31 of a type that does not self-lock, such as a ball screw jack or a screw shaft 32 with a high-lead trapezoidal screw, the torque that attempts to reverse rotation due to the weight of the door body 10 is transmitted through the transmission path to the drive wheel 35 without being absorbed by friction, and there is a risk that the drive wheel 35 will rotate in reverse. By applying appropriate friction to the rotation of the rotating shaft 36a with the brake 320, the reverse rotation of the drive wheel 35 can be prevented. Furthermore, by tightening the adjustment nut 323 and applying strong friction to the rotating shaft 36a, the door body 10 can be stopped at any position. The brake 320 is particularly suitable for use when the screw jack 31 does not self-lock.

[0031] Next, the structure of the door body 10 will be described with reference to Figure 8. In this embodiment, the door body 10 has a rectangular plate-shaped face panel 11, a frame-shaped frame 12 adjacent to the face panel 11, and a reinforcing member 13 connected to the frame 12 and extending in the vertical direction. The face panel 11, frame 12, and reinforcing member 13 are made of metal. A watertight material 52 is connected to the frame 12. The watertight material 52 is annular in shape around the outer edge of the door body 10 when viewed from the front. In this embodiment, square pipes are used as the frame 12 and the reinforcing member 13, but members of any cross-section that can ensure sufficient strength and rigidity to withstand water pressure can be used. The door body 10 configured in this way can withstand water pressure without breaking, and the water pressure acting on the door body 10 can be transmitted to the wall W via the watertight material 52, seal frame 51, and column members 21, 22.

[0032] Next, the procedure for using the waterproof door device 1 according to this embodiment will be explained with reference to Figures 1 and 2. Under normal conditions when the water level is not rising, the door body 10 is in the open position. When the water level outside the building S rises due to heavy rain or other reasons and it is determined that waterproofing is necessary, the door body 10 is moved to the closed position. To lower the door body 10 to the closed position, the drive wheel 35 of the drive means 30 is rotated in the reverse direction. Alternatively, in the case of a screw jack 31 of a type that does not self-lock, such as a ball screw jack or a screw jack 31 with a high-lead trapezoidal screw shaft 32, when the torque transmission is cut off by the clutch 310, the door body 10 will descend by its own weight and move to the closed position. As the door body 10 descends and approaches the closed position, the wedges 41, 42, 43, and 44 of the compression means 40 act to press the door body 10 against the wall W. When the door body 10 is pressed against the wall W, the watertight material 52, the sealing frame 51, and the flanges of the column members 21 and 22 come into close contact, making the area around the opening P watertight. Even if the water level rises in this state and the door body 10 is submerged, the door body 10 will withstand the water pressure, preventing water from entering the building S through the opening P. In other words, simply by using the driving means 30, the door body 10 closes the opening P in the building S, preventing water from entering.

[0033] When the water level outside building S drops and waterproofing is no longer necessary, the door body 10 can be moved to the open position. To move the door body 10 toward the open position, the drive wheel 35 of the drive means 30 should be rotated forward. When the door body 10, which is in the closed position, rises and moves toward the open position, the force that was pressing it against wall B by the compression means 40 is released, and the watertight seal around the opening P is released. If the drive wheel 35 continues to rotate forward, the door body 10 will rise further and reach the open position.

[0034] (Modified example of a waterproof door device) Next, a modified example of the waterproof door device will be described using the reference numerals shown in Figures 1 to 8. In the embodiment described above, the waterproof door device 1 was located on the outside of the building S, but it can also be located on the inside of the building S. That is, the column members 21 and 22 can be located on the inside of the building S and connected to the wall W.

[0035] Furthermore, in the embodiment described above, the open position of the door body 10 was set above the closed position, but the open position can also be set below the closed position. In this case, when waterproofing, the lower door body 10 is raised to the closed position using the drive means 30. Then, when releasing the waterproofing, the door body 10 in the closed position is lowered to the open position using the drive means 30.

[0036] Furthermore, in the embodiment described above, the door body 10 was configured to move up and down, but it can also be configured to move left and right. That is, the rails supporting the door body 10 can be arranged to extend left and right, and the open position and closed position can be set to be in a left-right positional relationship. In addition, by appropriately arranging the rails supporting the door body 10, it is also possible to configure the door body 10 to move in an inclined direction.

[0037] In the embodiment described above, the compression means 40 that presses the door body 10 toward the wall W as it approaches the closed position consisted of two sets of wedges 41, 42 at the top and wedges 43, 44 at the bottom, but any number of sets can be used. Alternatively, instead of wedges, rollers or the like can be used as the compression means 40 to press the door body 10 toward the wall W as it approaches the closed position.

[0038] Furthermore, although a compression means 40 was provided in the embodiment described above, it is also possible to configure the waterproof door device 1 without using the compression means 40. That is, when the water level rises, the water pressure acting on the door body 10 will press the door body 10 against the wall W, so that the space between the door body 10 and the opening P becomes watertight.

[0039] In the previously described embodiment, the waterproof door device 1 had a pair of screw jacks 31, 31, but it is also possible to configure it so that the door body 10 is driven by a single screw jack 31. Furthermore, instead of the traveling nut system in which the nut moves up and down, a system in which the screw shaft moves up and down can be used. Also, instead of the screw jack 31 as the driving means 30, a wire rope or hydraulic jack can be used to apply force to move the door body 10. In the previously described embodiment, the transmission path was configured by combining a rotating shaft 36, a sprocket 37, and a chain 38, but instead, a bevel gearbox or the like can be used to configure the transmission path. The reduction ratio and other parameters can be set arbitrarily. Furthermore, instead of manually turning the drive wheel 35, it can be turned by a motor or the like. Additionally, as a screw jack 31 that does not self-lock, a highly efficient screw jack can be used in which any rolling element such as a ball or roller is housed in the nut. If a non-self-locking screw jack is used, the weight of the door body 10 will easily cause the screw shaft to rotate in the reverse direction.

[0040] In the embodiment described above, the brake 320 applied friction to the rotation of the rotating shaft 36a, but it can be configured to apply friction to any other rotating shaft. Furthermore, it is not limited to a "torque keeper," and any mechanism that applies friction to the rotating shaft can be used. It is also possible to omit the brake 320.

[0041] In the embodiment described above, the clutch 310 was interposed between the rotating shaft 36b and the sprocket 37c, but it can be placed at any location in the transmission path. Furthermore, it is not limited to a "torque keeper," and any mechanism for disconnecting torque can be employed. It is also possible to omit the clutch 310.

[0042] In the embodiment described above, the components constituting the door body 10 were made of metal, but the door body 10 can also be made of resin, composite material, or the like. [Explanation of Symbols]

[0043] 1 Waterproof door device 10 Door Body 11 Face plate 12 frames 13 Reinforcement 21,22 Column members 21a Flange 30 Driving means 31 Screw Jack 32 Screw shaft 33 Jack body 34 nuts 35 Drive wheels 35a Handle 36a, 36b, 36c Rotation axis 37a, 37b, 37c, 37d sprockets 38a, 38b Chain 310 Clutch 311 Hub 312 AF flange 313 Adjustment nut 314 Adjustable handle 320 Brake 321 Hub 322 AF flange 323 Adjustment nut 40 Compression methods 41, 42, 43, 44 Wedge 51 Sticker frame 52 Watertight material 91 mounting base 92 Restriction board S Building W Wall P opening R transmission pathway

Claims

1. A waterproof door device that prevents water from entering the interior through openings in the walls of a building when the water level rises, A door body that opens and closes an opening in the wall of a building, The system includes a drive means for moving the door body along a predetermined path parallel to the wall, Along the aforementioned path, there exists a closed position in which the door body covers the opening when viewed from the front, and an open position in which the opening is exposed when viewed from the front. The door body is further provided with a compression means that presses the door body toward the wall as it approaches the closed position, The aforementioned path extends in the vertical direction, The closed position is below the open position, The driving means has a screw jack coupled to the door body. A waterproof door device characterized by the following features.

2. The driving means further comprises a drive wheel that receives torque and a transmission path that transmits torque from the drive wheel to the screw jack. The waterproof door device according to feature 1.

3. The driving means further comprises a clutch positioned in the transmission path that selectively switches between transmitting or disconnecting torque. The waterproof door device according to feature 2.

4. The driving means further includes a brake that applies friction to the rotation of the rotating shaft that constitutes the transmission path and transmits torque. The waterproof door device according to claim 2 or 3, characterized by the features described above.

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