Water-stopping structure

Abstract

To provide a water stop structure for realizing a water stop door suitable for everyday use without requiring any prior installation work when used and without requiring any special force to close the door. [Solution] The door comprises a hanging side structure in which, when the door is closed in a non-waterlogged state and not subjected to water pressure, a hanging side elastic waterstop member arranged on the hanging side vertical frame of the door frame is compressed with a pressure that exerts watertightness between the door and the hanging side structure; a door end side structure in which, when the door is closed in a non-waterlogged state, the door end side elastic waterstop member arranged on the end side vertical frame of the door frame is compressed between the door and the door with a pressure below the contact pressure that generates a limit of elastic force that allows the door to be easily closed by hand, or does not come into contact with the door; and a bottom frame side structure in which, when the door is closed in a non-waterlogged state, a bottom frame elastic waterstop member arranged on the bottom frame of the door frame comes into contact with or does not come into contact with the door with a pressure gradient from the hanging side to the door end side, from the compression pressure in the hanging side structure to the compression pressure in the door end side structure or a non-contact state; and further, the door is allowed to rotate in order to compress the door end side elastic waterstop member to a state in which water pressure exerts watertightness when the door is closed in a waterlogged state.

Description

[Technical field]

[0001] The present invention relates to a waterproof structure for preventing water from entering through a hinged door. [Background technology]

[0002] 2. Description of the Related Art Conventionally, various water stop devices have been proposed to prevent flood damage to buildings and the like in the event of rainfall exceeding drainage capacity.

[0003] In particular, retrofit-type waterstop devices that can give waterstop functionality to doors that do not have waterstop capabilities eliminate the need to replace the door or door frame itself with a waterstop door, and therefore can significantly reduce the cost and effort required to prevent water intrusion in existing swing doors (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6707246 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the above-mentioned conventional waterproofing devices have the problem that the elastic material must be constantly clamped between the door and the door to prevent water from entering through gaps in the door frame, and force is required to close the door, making them unsuitable for everyday use.

[0006] In addition, as a water-stopping device that improves on these points, for example, JP 2019-100121 A is known, which is attached to a door when a water-stopping function is required and can be removed in normal times.

[0007] However, when flood damage is expected, such water stop devices naturally need to be installed in advance, which is cumbersome.

[0008] The present invention has been made in consideration of the above circumstances, and provides a watertight structure for realizing a watertight door suitable for everyday use without requiring any prior installation work when in use and without requiring any special force to close the door. [Means for solving the problem]

[0009] In order to solve the above-mentioned problems, the waterproof structure of the present invention provides: (1) a waterproof structure that prevents water from entering through gaps in the door frame at least on the left, right, and bottom three sides of a closed hinged door by using elastic waterproof members arranged along the three sides, and when the door is closed in a non-waterlogged state where the door is not subjected to water pressure, the hanging-side elastic waterproof member arranged on the hanging-side vertical frame of the door frame is compressed with a pressure that exerts watertightness between the door and the hanging-side elastic waterproof member arranged on the hanging-side vertical frame of the door frame when the door is closed in a non-waterlogged state, and The door frame has a door-end side structure in which a door-end side elastic water-stopping member arranged on a door-end side vertical frame of the door frame is compressed between the door or does not come into contact with the door at a pressure equal to or lower than a contact pressure at which a limit of elastic force is generated that allows the door to be easily closed by hand, and a bottom frame side structure in which a bottom frame elastic water-stopping member arranged on a bottom frame of the door frame comes into contact with or does not come into contact with the door at a pressure gradient from the hanging side to the door end side, from the compression pressure at the hanging side structure to the compression pressure or non-contact state at the door end side structure, when the door is closed in a non-water-submerged state. ,before When the door is closed in a flooded state, the door is allowed to rotate in order to compress the elastic water-stopping member on the door end side until the water pressure causes the door to exhibit watertightness. Each of the elastic water-stopping members is disposed on the door frame so as to come into contact with the door on the inside of the area of ​​the door facing the door stop of the door frame when the door is closed in a flooded state, and a contact pressure adjustment means is provided for adjusting the contact pressure of each of the elastic water-stopping members against the door. The bottom frame elastic water-stopping member comprises a long base member having a generally J-shaped cross section and a screw hole formed therein, a long support member having a generally U-shaped cross section and a long screw hole formed in a position facing the screw hole of the base member, and a long elastic seal member having a generally rectangular cross section. The bottom surface of the support member is opposed to the wide surface on the inner side of the bend of the base member, and is arranged in the longitudinal direction, a predetermined width inward from the edge of the wide surface to form a seal member arrangement space, and an elastic seal member is arranged in the seal member arrangement space. The bottom frame elastic water-stopping member is attached to the bottom frame of the door frame by inserting screws into the screw holes of the base member and the support member, and the contact pressure adjustment means adjusts the front-to-rear mounting position of the elastic seal member together with the support member by using an elongated screw hole formed in the support member. It was decided to do so.

[0010] The waterproof structure according to the present invention is also characterized in the following respects. (2 )before The elastic water-stopping member on the hanging side is disposed on the door end side facing surface of the hanging side vertical frame at a position that does not come into contact with the hanging side corner when the door is opened or closed. ( 3 ) An auxiliary water-stopping member is provided to prevent water from entering through the gaps in the door frame when the door is flooded with water at a water pressure lower than the water pressure at which the water-tightness of the door-end elastic water-stopping member is exerted. 。 Effect of the Invention

[0011] According to the water stop structure of the present invention, the water stop structure prevents water from entering through gaps in the door frame at least on the left and right lower three sides of the closed hinged door by using elastic water stop members arranged along the three sides, and the water stop structure has a hanging side structure in which, when the door is closed in a non-waterlogged state where the door is not subjected to water pressure, the hanging side elastic water stop member arranged in the hanging side vertical frame of the door frame is compressed with a pressure that exerts watertightness between the door and the hanging side elastic water stop member arranged in the end side vertical frame of the door frame is compressed between the door and the door with a pressure equal to or lower than the contact pressure that generates the limit of elastic force that allows the door to be easily closed by hand, or a door end side elastic water stop member that does not come into contact with the door. and a lower frame side structure in which, when the door is closed in a non-waterlogged state, a lower frame elastic water-stopping member arranged on the lower frame of the door frame comes into contact with or is not in contact with the door with a pressure gradient from the hanging side to the door end side, from the compression pressure in the hanging side structure to the compression pressure in the door end side structure or a non-contact state, and further, the door is allowed to rotate to compress the door end side elastic water-stopping member to a state in which water pressure causes watertightness to be exhibited when the door is closed in a waterlogged state, thereby providing a water-stopping structure that does not require prior installation work when used and does not require special force to close the door, making it suitable for everyday use.

[0012] In addition, each elastic water-stopping member is arranged on the door frame so that when the door is closed while the door is flooded, it abuts inside the area of ​​the door that faces the door stop of the door frame, thereby more reliably preventing water from entering.

[0013] In addition, the hanging side elastic water-stopping member is arranged at a position on the door-end-side orientation surface of the hanging side vertical frame that does not come into contact with the hanging side corner when the door is opened or closed, thereby preventing deterioration of the hanging side elastic water-stopping member due to contact with the corner of the door.

[0014] In addition, an auxiliary water-stopping member is provided to prevent water from entering through gaps in the door frame when the door is flooded with water at a water pressure lower than the level at which the watertightness of the door-end elastic water-stopping member is demonstrated.This makes it possible to prevent water from entering as much as possible even at low water pressure.

[0015] Furthermore, since the contact pressure adjusting means is provided for adjusting the contact pressure of each of the elastic water-stopping members against the door, the contact pressure between each of the elastic water-stopping members and the door can be easily adjusted. [Brief description of the drawings]

[0016] [Figure 1] 1 is an explanatory diagram showing the configuration of a watertight door device equipped with a watertight structure according to an embodiment of the present invention; [Diagram 2] An explanatory diagram showing the configuration of the hanging side structure and the door end side structure. [Diagram 3] FIG. 4 is an explanatory diagram showing the configuration of a hanging-side elastic water-stopping member. [Figure 4] An explanatory diagram showing the configuration of the hanging side structure and the door end side structure. [Diagram 5] An explanatory diagram showing the configuration of the hanging side structure and the door end side structure. [Figure 6] FIG. 4 is an explanatory diagram showing the configuration of the hanging side structure. [Figure 7] An explanatory diagram showing the configuration of the lower frame side structure. [Figure 8] 5 is an explanatory diagram conceptually showing a compressed state of the elastic seal member. FIG. [Figure 9] An explanatory diagram showing the configuration of the hanging side structure and the door end side structure. [Figure 10] 5 is an explanatory diagram conceptually showing a compressed state of the elastic seal member. FIG. [Figure 11] 13 is an explanatory diagram showing the configuration of the hanging side structure and the door end side structure of a watertight door device according to a modified example. [Figure 12] 5A to 5C are explanatory diagrams conceptually showing the compressed state of the elastic seal member and the degree of watertightness of the auxiliary water-stopping member. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] The present invention relates to a waterproof structure that prevents water from entering through gaps in the door frame on at least the lower left and right three edges of a closed swing door by using elastic waterproof members arranged along the edges.The present invention provides a waterproof structure that does not require prior installation work when in use and does not require special force to close the door, making it suitable for everyday use.

[0018] The waterproof structure according to the present embodiment may be used as a structure for a newly created hinged door, but may also be used to provide a waterproof function to an already installed hinged door, for example, a normal hinged door that does not have a function for preventing water from entering. In particular, in the latter case, measures against water ingress can be implemented quickly and inexpensively compared to removing an existing hinged door and replacing it with a waterproof door or performing large-scale construction such as modifying an existing door frame.

[0019] The hinged door may be a single-leaf door, or a double-leaf door such as a double door or a parent-child door. In this case, the edge of one door on the mating side functions as the door frame for the other door.

[0020] The material of the hinged door is not particularly limited as long as it is a material that can ensure watertightness, but a steel door, for example, is preferable.

[0021] In addition, the hinged door for which the waterproof structure according to this embodiment should be adopted is a hinged door in which the direction in which pressure is applied to the door by the water pressure of water attempting to infiltrate during flooding coincides with the direction in which the door is closed. Hereinafter, such a hinged door will also be referred to as a pressure-closed hinged door.

[0022] A characteristic feature of the water-stopping structure according to this embodiment is that it is equipped with a predetermined hanging side structure, a door end side structure, and a sill side structure.

[0023] The hanging side structure is a structure in which, when the door is closed in a non-waterlogged state and not subjected to water pressure, the hanging side elastic water-stopping member arranged on the hanging side vertical frame of the door frame is compressed with a pressure that provides watertightness between the door and the hanging side elastic water-stopping member.

[0024] Here, the non-flooded state in which the door is not subjected to water pressure refers to a state in which water has not reached the door, and more specifically, for example, a normal state.

[0025] In addition, when the door is closed, it means that the door is fitted in the door frame, and in particular, it can be understood as the state in which the door is fitted in the door frame with the latch bolt and deadbolt capable of being engaged on the strike side.

[0026] In addition, compressing with a pressure that exhibits watertightness means, for example, when the height of the upper end position of the elastic water-stopping member on the hanging side is lower than the height at which the door handle, lock, etc. are installed (the height of the front and back penetration part), and when the height of the upper end position of the elastic water-stopping member on the hanging side is higher than the height of the front and back penetration part, the elastic water-stopping member is compressed with a pressure that does not allow water to seep in through the gaps in the door frame even if water approaches the door at least up to the height of the front and back penetration part.

[0027] The door-end structure is designed so that when the door is closed in a non-waterlogged state, the door-end elastic water-stopping member arranged on the door-end vertical frame of the door frame is compressed between the door and the member at a pressure below the contact pressure that generates the limit of elastic force that allows the door to be easily closed by hand, or does not come into contact with the door.

[0028] The contact pressure that produces the limit of elasticity that allows the door to be easily closed by hand does not mean a contact pressure where the repulsive force from the elastic water-stopping member on the door end is so strong that the door cannot be closed without pushing down hard, but a contact pressure that produces a repulsive force that allows the door to be opened and closed smoothly, taking into account the weight and size derived from the door material.

[0029] To give a concrete example to aid understanding, we can imagine a contact pressure that generates a repulsive force sufficient to close the door by inertia even if you let go of it, or sufficient to close the door by the force of the door closer.

[0030] Such an elastic water-stopping member on the door end side, compressed between the door and the door at a pressure below the contact pressure (easy closing pressure) that creates the limit of elastic force that allows the door to be easily closed by hand, may or may not be watertight when the door is closed in a non-waterlogged state.

[0031] In addition, when the door is closed in a non-waterlogged state, the elastic water-stopping member on the door end side may not be in contact and may not be receiving any compressive force from the door.

[0032] The bottom frame side structure is a structure in which, when the door is closed in a non-waterlogged state, the bottom frame elastic water-stopping member arranged on the bottom frame of the door frame comes into contact with or is not in contact with the door with a pressure gradient from the hanging side to the door end side, from the compression pressure in the hanging side structure to the compression pressure or a non-contact state in the door end side structure.

[0033] In other words, the lower frame elastic water-stopping member in the lower frame side structure is not pressurized with a uniform pressure from the hanging side to the door end side when the door is closed in a non-waterlogged state, but is pressurized with different pressures ranging from a pressure that can demonstrate watertightness to a pressure below the easy closing pressure or even to an unpressurized state.

[0034] A further feature of the water-stopping structure of this embodiment is that when the door is closed while submerged in water, the door is allowed to rotate in order to compress the elastic water-stopping member on the door end side to a state where water pressure ensures watertightness.

[0035] In other words, the door is left with enough rotational space to be pushed further into the door frame (in the door closing direction) against the elastic force of the elastic water-stopping member on the door edge, and when the door is pushed in by water pressure using this rotational space, the elastic water-stopping member on the door edge is compressed by the pressure that exerts watertightness. This rotational space can be obtained by using the gap provided as play between the door and the door frame in a normal door opening and closing device. In this case, if there is a spacer (doorstop cushion) to maintain the gap, the rotational space will be restricted, so by removing this, the rotational space can be secured.

[0036] In this way, the water-stopping structure of this embodiment comprises the specified hanging side structure, door end side structure, and sill side structure as described above, and further comprises a rotation allowance structure that allows further rotation via the rotation allowance to exhibit watertightness when water pressure is applied, thereby making it possible to provide a water-stopping structure that does not require prior installation work when in use, and does not require special force to close the door, making it suitable for everyday use.

[0037] Although not particularly limited, it is desirable that the door be parallel to the door frame when closed in a non-flooded state. In other words, by fitting the door parallel to the door frame in normal times, just like a normal swing door, it will not only feel the same in use, but also look the same as a normal swing door, preventing any visual discomfort.

[0038] In addition, it is desirable that the door end elastic water-stopping member is compressed by water pressure to a state where watertightness is exhibited, that is, when the door is closed in a flooded state, the door end side is further pressed into the door frame and is housed at a slight angle. In this state, watertightness can be exhibited reliably.

[0039] The waterproof structure according to this embodiment will be further described below with reference to the drawings. In the following description, an area where flooding is expected or has already occurred will be referred to as a flooded area, and an area where flood damage should be suppressed will be referred to as a protected area, as shown in Fig. 1(a), for example. In other words, the hinged door employing the waterproof structure according to this embodiment is located at the boundary between the flooded area and the protected area (hereinafter also referred to as a waterproof boundary).

[0040] In addition, in the explanation of the doors and each part, the direction between the flooded area and the protected area is also referred to as the front-rear direction as shown in Figure 1(a), the width direction of the door, etc. is also referred to as the left-right direction, and the height direction of the door, etc. is also referred to as the up-down direction as shown in Figure 1(b). For convenience of explanation, the front-rear direction may also be referred to as the direction in which people enter and exit, or the direction in which the door opens and closes (door opening direction, door closing direction).

[0041] FIG. 1 is an explanatory diagram showing a watertight door device 10, where FIG. 1(a) is an explanatory diagram showing a cross section taken along line XX in FIG. 1(b), and FIG. 1(b) is a front view of the watertight door device 10 as seen from the protected area side.

[0042] The watertight door device 10 is a pressure-closed door device to which the watertight structure S of this embodiment is applied, which is created by retrofitting a watertight component 11 to an existing steel fire door device that does not have a watertight function.

[0043] As shown in FIG. 1(a) and FIG. 1(b), the watertight door device 10 is composed of a door frame 12, a door 13, a door closer 16, and a watertight component 11.

[0044] The door frame 12 is a frame for storing a door 13 that can be opened and closed freely, and is installed by penetrating the wall 14. As shown in Figure 1(b), the door frame 12 comprises a hanging side vertical frame 12a and a door end side vertical frame 12b that extend in the vertical direction, and a lower frame 12c and an upper frame 12d that extend in the left-right direction.

[0045] The door 13 is a member for closing an opening within the door frame 12, and in this embodiment, as shown in FIG. 1(a), it is attached to the hanging side vertical frame 12a on the right side of the page via a hinge 15 so as to be able to swing freely.

[0046] The door closer 16 is a device for automatically closing the door 13 slowly by hydraulic pressure, and the door 13 is biased in the closing direction by the door closer 16.

[0047] The water-stopping component 11 is a component for preventing water from seeping in through gaps in the door frame on the lower left and right three edges when the door 13 is closed, and is composed of a hanging side elastic water-stopping component 11a arranged on the hanging side vertical frame 12a, a door end side elastic water-stopping component 11b arranged on the door end side vertical frame 12b, and a bottom frame elastic water-stopping component 11c arranged on the bottom frame 12c.

[0048] In addition, the water-stopping structure S is composed of a hanging side structure S1 constructed by the hanging side vertical frame 12a, the hanging side edge 13a of the door 13, and the hanging side elastic water-stopping member 11a, a door end side structure S2 constructed by the door end side vertical frame 12b, the door end side edge 13b of the door 13, and the door end side elastic water-stopping member 11b, and a bottom frame side structure S3 constructed by the bottom frame 12c, the lower edge 13c of the door 13, and the bottom frame elastic water-stopping member 11c.

[0049] FIG. 2 is an explanatory diagram showing the configuration of the hanging side structure S1 and the door end side structure S2, and omits the left and right directions of the door 13 and the space between the hanging side vertical frame 12a and the door end side vertical frame 12b.

[0050] As shown in Figure 2, the opening 17 formed inside the door frame 12 (near the center of the page) has an opening width that is approximately the same as the left-right width of the door 13, and approximately half of it on the flood area side is a flood side opening 17a, and an opening width that is shorter than the left-right width of the door 13, and approximately half of it on the protected area side is a protected side opening 17b.

[0051] Both the flood side opening 17a and the protected side opening 17b function as an entrance for passage between the flooded area and the protected area, but the flood side opening 17a in particular also functions as a door accommodating section that accommodates the waterstop door device 10 when the door is closed.

[0052] In addition, a step portion 17c is formed at the boundary between the flood side opening 17a and the protection side opening 17b due to the difference in opening width and opening height, and the surface of the step portion 17c facing the flood area side is a door stop surface 17d.

[0053] The hanging side structure S1 shown on the right side of Figure 2 is composed of the hanging side vertical frame 12a of the door frame 12, as described above, the hanging side elastic water-stopping member 11a arranged in the hanging side vertical frame 12a of the water-stopping component 11, and the hanging side edge 13a of the door 13, and its function is achieved by the cooperation of these.

[0054] The hanging side elastic water-stopping member 11a is disposed on the surface of the hanging side vertical frame 12a (hereinafter referred to as the protected side hanging inner surface 18a) which is the surface (including the door stop surface 17d, hereinafter referred to as the inner surface) that constitutes the protected side opening 17b of the door frame 12 and is fixed in place with screws 19.

[0055] Similarly, the door-end side structure S2 shown on the left side of Figure 2 is composed of the door-end side vertical frame 12b of the door frame 12, a door-end side elastic water-stopping member 11b arranged on the door-end side vertical frame 12b of the water-stopping part 11, and the door-end side edge 13b of the door 13, and its function is achieved by the cooperation of these members. The door-end side elastic water-stopping member 11b is arranged on the protected side inner surface of the door frame 12, which is the surface of the door-end side vertical frame 12b (hereinafter referred to as the protected side door-end inner surface 18b), and is fixed with screws 19.

[0056] Here, the structure of the hanging-side elastic water-stopping member 11a will be described with reference to Fig. 3. Note that the structure of the door-end-side elastic water-stopping member 11b is substantially the same as that of the hanging-side elastic water-stopping member 11a, so a description thereof will be omitted.

[0057] As shown in Figure 3(a), the hanging side elastic water-stopping member 11a is composed of a long base member 20 that is roughly L-shaped in cross section, a long support member 21 that is also roughly U-shaped in cross section, and an elastic seal member 22 that is also long and roughly rectangular in cross section.

[0058] The construction of the suspension-side elastic waterstop member 11a is as follows. First, the bottom surface 21a of the support member 21 is arranged along the longitudinal direction while facing the wide surface 20a on the inner side of the bend of the substrate member 20. At this time, the support member 21 is arranged closer to the inner side (closer to the narrow surface 20b) by a predetermined width d1 from the edge of the wide surface 20a, and a seal member arrangement margin 20c is formed along the edge. Note that the predetermined width (the width of the seal member arrangement margin) d1 is smaller than the width d2 of the elastic seal member 22 (d1 < d2), and is also smaller than the maximum width d3 at which the elastic seal member 22 can exhibit watertightness due to compression from the door 13 (d1 < d3 < d2). In this embodiment, an elastic seal member 22 with a width d2 of 10 mm in the free state and a maximum width d3 of 9 mm at which watertightness can be exhibited is adopted, and the predetermined width (the width of the seal member arrangement margin) d1 is 5 mm.

[0059] Next, as shown in FIG. 3(b), by arranging the elastic seal member 22 in the seal member arrangement margin 20c, the suspension-side elastic waterstop member 11a is constructed.

[0060] The attachment of the suspension-side elastic waterstop member 11a to the inner peripheral surface 18a of the protection-side suspension end is performed by inserting a screw 19 into a screw hole 23 formed in the suspension-side elastic waterstop member 11a, as shown in the lower right of FIG. 4.

[0061] Also, as shown in the upper right of FIG. 4, the screw hole 23 is a long hole with the longitudinal direction in the front-rear direction. Therefore, as shown by the broken line in the lower right of FIG. 4 for the suspension-side elastic waterstop member 11a, it is possible to easily adjust the front-rear mounting position of the suspension-side elastic waterstop member 11a with respect to the inner peripheral surface 18a of the protection-side suspension end. Hereinafter, this configuration is referred to as the front-rear position adjustment mechanism.

[0062] Also, the configuration of the door-tip side elastic waterstop member 11b and the attachment of the same door-tip side elastic waterstop member 11b to the inner peripheral surface 18b of the protection-side door tip are the same as the configuration of the suspension-side elastic waterstop member 11a described above and the attachment of the same suspension-side elastic waterstop member 11a to the inner peripheral surface 18a of the protection-side suspension end, and the front-rear mounting position of the door-tip side elastic waterstop member 11b can be easily adjusted by the front-rear position adjustment mechanism.

[0063] Fig. 5 is an explanatory diagram showing the structure of the waterproof door device 10 when the door is closed and not flooded. As shown in the lower diagram of Fig. 5, when the door is closed and not flooded, the door 13 is fitted parallel to the door frame 12 with a certain gap d4 between the door stop surface 17d on both the hanging side and the door end side.

[0064] Also, on the hanging side, as shown in the upper right diagram of Figure 5, the hanging side elastic water-stopping member 11a arranged on the hanging side vertical frame 12a of the door frame 12 is compressed with a pressure that exerts watertightness between it and the hanging side edge 13a of the door 13, thereby constructing the hanging side structure S1.

[0065] In other words, the attachment position of the hanging side elastic waterstop member 11a is adjusted using the front-rear position adjustment mechanism, that is, the protruding position with respect to the door 13 is adjusted, so that the width of the elastic seal member 22 becomes width d5 ​​at which watertightness is sufficiently exhibited by pressure from the door 13 when the door is closed in a non-waterlogged state (for example, the biasing force from the door closer 16). In this embodiment, the width d5 ​​at which the hanging side structure S1 is sufficiently watertight is set to 8 mm, which is 2 mm compressed from the width d2=10 mm of the elastic seal member 22 in the free state when the door is closed. This is a state further compressed than the width d3=9 mm at which watertightness can be exhibited as described above.

[0066] Furthermore, in the hanging side structure S1, the hanging side elastic water-stopping member 11a is disposed on the protected side hanging inner surface 18a of the door frame 12 so that it abuts inside the opposing area with the doorstop surface 17d of the door 13 when the door is closed, providing more reliable water-stopping compared to when an elastic seal member 22 is disposed on the doorstop surface 17d to achieve water-stopping.

[0067] In addition, in the hanging side structure S1, as shown in Figure 6, the position of the hanging side elastic water-stopping member 11a is set to a position on the inner surface (door-end-side facing surface) of the hanging side vertical frame 12a where it does not come into contact with the hanging side corner portion 13e when the door 13 is opened or closed (non-contact position), or where, even if it does come into contact, it only lightly touches the hanging side corner portion 13e without causing significant twisting of the elastic sealing member 22 (light contact position).

[0068] For example, to refer more specifically to the case of the non-contact position, the position of the hanging-side elastic water-stopping member 11a is adjusted by the front-to-rear position adjustment mechanism so that the elastic sealing member 22 does not come into contact with the rotational trajectory (indicated by a dashed line) of the hanging-side corner 13e when the door 13 is opened or closed, and is compressed to a width d5 ​​= 8 mm (corner non-contact / watertight width in normal operation) at which watertightness is fully exhibited when the door is closed.

[0069] This configuration can prevent the elastic seal member 22 from being twisted and degraded by contact with the hanging-side corner 13e that accompanies the rotation of the door 13. In addition, the elastic seal member 22 is compressed toward the protection area in a direction substantially perpendicular to the contact surface of the elastic seal member 22 by the hanging-side edge 13a that is substantially parallel to the left-right direction, so that the uniform compression can reliably prevent water leakage.

[0070] In this manner, the front-rear position adjustment mechanism functions as a contact pressure adjustment means for adjusting the contact pressure of the hanging side elastic water-stopping member 11a against the door 13, thereby constructing the hanging side structure S1.

[0071] On the other hand, on the door end side, as shown in the upper left diagram of Figure 5, the door end side elastic water-stopping member 11b arranged on the door end side vertical frame 12b of the door frame 12 is compressed between the door end side edge 13b of the door 13 at a pressure lower than the easy closing pressure, thereby forming the door end side structure S2.

[0072] In other words, the attachment position of the door-end elastic water-stopping member 11b is adjusted using the front-rear position adjustment mechanism (contact pressure adjustment means), that is, the protruding position relative to the door 13 is adjusted so that the width of the elastic seal member 22 is a width that generates a repulsive force smaller than the repulsive force of the door closer or the limit repulsive force that allows the door to be easily closed by hand due to pressure from the door 13 when the door is closed in a non-waterlogged state, and is a width (width d6 that exhibits sufficient watertightness when rotated within a range of rotational allowance described below) that exhibits sufficient watertightness when the door is flooded. In this embodiment, the width d6 that exhibits watertightness when the door is closed and is easy to close in normal state (d2=10 mm) is 9.9 mm, which is compressed by 0.1 mm. This is a width within the range of the rotation allowance (d4 = 3 mm) described below, for example, a maximum width d3 = 9 mm or less at which the elastic seal member 22 can exhibit watertightness when rotated by 0.9 mm or more in the closing direction.

[0073] Also in the door-end side structure S2, the door-end side elastic water-stopping member 11b is arranged on the protected side door-end inner surface 18b of the door frame 12 so that it abuts inside the opposing area with the door-stopping surface 17d of the door 13 when the door is closed, thereby achieving more reliable water-stopping compared to when an elastic seal member 22 is placed on the door-stopping surface 17d.

[0074] In addition, the gap d4 of the door-end structure S2 also functions as a rotation allowance 24 for ensuring watertightness when the door is closed in a flooded state. That is, when the door is closed in a non-flooded state, the door-end structure S2 allows the door 13 to rotate so that the door 13 is watertight due to water pressure, that is, the elastic seal member 22 of the door-end elastic waterstop member 11b is compressed to d3 = 9 mm or less.

[0075] Next, the lower frame side structure S3 will be described with reference to Fig. 7. Fig. 7 is an explanatory diagram showing the configuration of the lower frame side structure S3. Fig. 7(a) is an explanatory diagram showing a YY cross section of Fig. 1(b) with some parts omitted, and Fig. 7(b) is an exploded explanatory diagram showing the vicinity of the lower frame 12c of Fig. 7(a) with the door 13 omitted.

[0076] As shown in Figure 7(a), the lower frame side structure S3 is composed of the lower frame 12c of the door frame 12, a lower frame elastic water-stopping member 11c arranged in the lower frame 12c of the water-stopping component 11, and the lower edge 13c of the door 13, and its function is performed by the cooperation of these.

[0077] As shown in Figure 7(b), the lower frame elastic water-stopping member 11c is composed of a long base member 30 that is bent into an approximately J-shape in cross section, a long support member 31 that is also approximately U-shaped in cross section, and an elastic sealing member 22 that is also long and approximately rectangular in cross section.

[0078] The lower frame elastic water-stopping member 11c is constructed in substantially the same manner as the hanging side elastic water-stopping member 11a described above, by combining the base member 30, the support member 31 and the elastic seal member 22 while aligning them in the longitudinal direction.

[0079] The lower frame elastic water-stopping member 11c assembled in this manner is arranged on the protected side inner surface of the door frame 12, which is the surface of the lower frame 12c part (hereinafter referred to as the protected side lower frame inner surface 18c), as shown in Figures 7(a) and 7(b), and fixed with screws 19.

[0080] Further, an elongated screw hole 31b is formed in the bottom surface 31a of the support member 31 at a position facing the screw hole 30a provided in the base member 30, making it possible to easily adjust the attachment position of the elastic sealing member 22 in the front-rear direction together with the support member 31 relative to the support member 31 and lower frame 12c fastened by the screw 19. That is, the lower frame side structure S3 is also provided with a front-rear position adjustment mechanism, which is also configured to function as contact pressure adjustment means.

[0081] A characteristic of the lower frame side structure S3 is that the elastic sealing member 22 is configured to come into contact with the door with a pressure gradient from the hanging side to the door end side, from the compression pressure at the hanging side structure to the compression pressure at the door end side structure.

[0082] Fig. 8 is an explanatory diagram conceptually showing the compressed state of the elastic seal members 22 arranged on the hanging-side elastic water-stopping member 11a, the door-end-side elastic water-stopping member 11b, and the sill-frame elastic water-stopping member 11c when the door is closed in a non-water-submerged state. In Fig. 8, the degree of compression of the elastic seal members 22 in each water-stopping member is shown by shading, with the stronger the pressure received from the door 13 and the higher the degree of compression being shown by a darker color (black), and conversely, the weaker the pressure received from the door 13 and the lower the degree of compression being shown by a lighter color (white).

[0083] The compressed state of the elastic sealing member 22 in the hanging side structure S1 when the door is closed in a non-waterlogged state is a compressed state with the corner non-contact / normal watertight width d5 ​​= 8 mm as described above. Since this is a width that ensures sufficient watertightness even when the door is closed in a non-waterlogged state, it is in a highly compressed state as shown in dark color (black) as shown in Figure 8.

[0084] In addition, the compressed state of the elastic sealing member 22 when the door is closed in a non-waterlogged state in the door end structure S2 is a compressed state with the easy-to-close width in normal operation / watertightness when flooded d6 = 9.9 mm as described above, which is a state in which the door 13 lightly abuts against the elastic sealing member 22, and as shown in Figure 8, it is in a low compression state indicated by a light color (white).

[0085] Furthermore, when the door is closed in a non-waterlogged state in the lower frame side structure S3, a pressure gradient is formed from the hanging side to the door end side, ranging from high compression (dark color) in the hanging side structure to low compression (light color) in the door end side structure.

[0086] Furthermore, when considering the operability of opening and closing the watertight door device 10 equipped with such a watertight structure S in a non-waterlogged state, it would at first glance appear that the operability of opening and closing the door 13 in normal times would be deteriorated, since the door 13 is subjected to a strong repulsive force by the highly compressed elastic sealing member 22 of the hanging side structure S1.

[0087] However, the repulsive force from the elastic seal member 22 at the hanging side does not interfere with the closing operation due to the leverage, so the user performing the door closing operation does not feel an excessive weight.

[0088] In addition, on the door end side, the elastic sealing member 22 of the door end structure S2 is in a compressed state with an easy-to-close width in normal operation and a watertight width when flooded d6 = 9.9 mm, i.e., it is in a state where it only lightly contacts the door 13, so the user performing the door closing operation does not feel any excessive weight.

[0089] In addition, on the lower frame side, the elastic sealing member 22 of the lower frame side structure S3 forms a pressure gradient in which the repulsive force becomes stronger from the door end side to the hanging side, but since the leverage action also occurs strongly from the door end side to the hanging side, it does not interfere with the door closing operation and the user performing the door closing operation does not feel excessive weight.

[0090] In this way, the waterproof structure S of this embodiment can be said to be a waterproof structure for realizing a waterproof door device 10 that does not require special force to close the door and is suitable for everyday use.

[0091] Next, the state of the door 13 when it is closed and water pressure is applied due to flooding is shown in Figure 9. When water pressure due to flooding is applied to the door 13 as shown by the white arrow in the approximate center of the page, the door 13 rotates against the elastic force from the elastic seal member 22 of the door-end elastic water-stopping member 11b due to the rotation allowance 24 shown in the upper left of Figure 5, and becomes housed at an angle to the door frame 12 as shown in the lower diagram of Figure 9 (the door-end side is rotated further in the door-closing direction than parallel).

[0092] In this state, the hanging side structure S1 is almost the same as when the door is closed and not submerged in water, and since the watertightness is maintained, water is prevented from entering the protected area.

[0093] In the door-end structure S2, the elastic seal member 22, which has a watertight width d6=9.9 mm when the door 13 is closed easily under normal circumstances and when water ingresses, is compressed by water pressure through the door 13. For example, in this embodiment, as shown in the upper left of Fig. 9, the door 13 is compressed until it abuts against the door-stopping surface 17d, and the elastic seal member 22 is compressed further to 6.9 mm from the width d3=9 mm when the above-mentioned watertightness is exerted, exerting watertightness and preventing water from infiltrating into the protected area.

[0094] As shown in Figure 10, the pressure gradient structure in the sill side structure S3 from the hanging side to the door end is a pressure gradient from a highly compressed state in which watertightness is exhibited to a highly compressed state in which watertightness is also exhibited, and watertightness is also exhibited in the left-right direction, preventing water from entering the protected area.

[0095] In other words, the waterproof structure S according to this embodiment can be said to be a waterproof structure that can realize the waterproof door device 10 without the need for prior installation work when in use.

[0096] [Modifications] Next, a water stopping structure T according to a modified example will be described with reference to the drawings. Fig. 11 is an explanatory diagram showing a cross section in a plan view of a water stopping door device 40 to which the water stopping structure T according to a modified example is applied.

[0097] The watertight door device 40 has a configuration substantially similar to that of the watertight door device 10 described with reference to Figure 5, but differs in that it is equipped with an auxiliary watertight member 70 that exerts a watertight effect mainly in the early stages of water ingress.

[0098] Specifically, when the door 13 is flooded and sufficient water pressure is applied to it, the hanging side structure T1, door end side structure T2, and sill side structure T3 of the watertight door device 40 exhibit the same action and effect as the hanging side structure S1, door end side structure S2, and sill side structure S3 described above, and are able to prevent water from entering.

[0099] However, when flooding occurs but the water is not yet deep enough to apply sufficient water pressure, in the aforementioned watertight door device 10, the compression of the elastic watertight member 11b on the door end side using the pivot allowance 24 is not sufficient, and it is expected that the watertightness provided by the elastic sealing member 22 will be broken and water will enter the protected area through the gap between the door 13 and the door frame 12.

[0100] In this regard, in the watertight structure T adopted in the watertight door device 40 of this modified example, an auxiliary watertight member 70 is arranged at the position of the door stop surface 17d, which makes it possible to prevent water from entering through gaps in the door frame 12 when the door 13 is flooded with water at a water pressure that is lower than the water pressure at which the watertightness of the watertight component 11, particularly the door-end side elastic watertight member 11b which may lack watertightness under normal circumstances, is demonstrated.

[0101] This auxiliary water-stopping member 70 is positioned within a storage recess 41 formed by recessing a portion of the aforementioned doorstop surface 17d toward the protected area, and is positioned protruding toward the water-submerged area beyond the storage recess edge wall 42, which actually functions as the doorstop.

[0102] In addition, the auxiliary water-stopping member 70 is a flexible, elongated member that is accommodated in a storage recess 41 formed along the periphery of the lower half of the door frame 12, and is composed of a base portion 71, an expandable portion 72, and an adhesive portion 73, extending from the rear side of the storage recess 41 to the door 13 side (from the protected area side to the water-submerged area side) as shown in the enlarged upper view of Figure 11.

[0103] The base portion 71 is a portion that is disposed at the innermost portion of the accommodating recess 41 , and functions as a base portion that prevents the auxiliary water-stopping member 70 from falling out of the accommodating recess 41 .

[0104] The expandable portion 72 is a portion that connects the suction portion 73 to the base portion 71. The expandable portion 72 is made of a flexible material so as to be expandable in the front-rear direction, and supports the suction portion 73 relative to the base portion 71 so as to be movable in the front-rear direction.

[0105] The adhesion part 73 is a member that adheres to the surface of the door 13 on the side of the protected area to ensure watertightness. In particular, in this embodiment, the adhesion part 73 has a permanent magnet disposed therein, and is capable of being attracted to the steel door 13 by magnetic force. In addition, the magnetic force (adsorption force) is set to a level that can prevent the ingress of water at a depth below the water depth at which the elastic seal member 22 of the door-end elastic water-stopping member 11b can exhibit watertightness.

[0106] Also, although not shown in the figures, in the watertight door device 40 according to this modified example, a similar auxiliary watertight structure is constructed using the auxiliary watertight member 70 in the lower frame side structure T3 as well.

[0107] Figure 12 is a conceptual diagram similar to Figure 8, but shows the compressed state of the elastic sealing member 22 arranged in the water-stopping component 11 when the door is flooded but the water is not yet deep enough to apply sufficient water pressure, and the degree of watertightness at each part of the auxiliary water-stopping member 70 at the hanging side, door end side, and sill side.

[0108] As can be seen from Figure 12, the hanging side elastic water-stopping member 11a, the door end side elastic water-stopping member 11b, and the bottom frame elastic water-stopping member 11c, which are arranged on the inner side of the door frame 12 (near the center of the page), are in a compressed state similar to that of the previous water-stopping structure S.

[0109] In other words, the compression state of the elastic sealing member 22 in the hanging side structure T1 is a highly compressed state indicated by a dark color (black), the compression state in the door end side structure T2 is a low compressed state indicated by a light color (white), and the compression state in the bottom frame side structure T3 is a state in which a pressure gradient is formed from the hanging side to the door end side, ranging from high compression (dark color) to low compression (light color).

[0110] Therefore, there are cases in which sufficient watertightness cannot yet be expected from the door-end side elastic water-stopping member 11b of the door-end side structure T2.

[0111] On the other hand, however, the auxiliary water-stopping member 70 maintains a level of watertightness that allows for uniform auxiliary water-stopping from the hanging side to the sill side and door end side. In other words, as shown by the symbol P in the legend for the degree of watertightness of the auxiliary water-stopping member shown at the bottom of Figure 12, the auxiliary water-stopping member 70 exerts watertightness by adsorbing with a force sufficient to prevent water from entering if the water pressure is due to a water depth below the water depth at which the elastic seal member 22 becomes watertight.

[0112] In this way, the watertight door device 40 of this modified example is equipped with an auxiliary watertight member 70 for preventing water from entering through gaps in the door frame 12 when the door 13 is flooded with water at a water pressure that is lower than the water pressure at which the watertightness of the watertight component 11, particularly the door-end side elastic watertight member 11b, is demonstrated, so that water entry can be prevented as much as possible even at low water pressure.

[0113] As described above, the water stop structure according to the present embodiment (for example, water stop structures S and T) is a water stop structure that prevents water from entering through gaps in the door frame at least on the left and right lower three sides of a closed hinged door by using elastic water stop members arranged along the three sides, and has a hanging side structure in which, when the door is closed in a non-waterlogged state where the door is not subjected to water pressure, the hanging side elastic water stop member arranged in the hanging side vertical frame of the door frame is compressed with a pressure that exerts watertightness between the door and the hanging side structure, and when the door is closed in a non-waterlogged state, the door end side elastic water stop member arranged in the door end side vertical frame of the door frame is compressed with a pressure equal to or lower than the contact pressure that generates a limit of elastic force that allows the door to be easily closed by hand, or The door is provided with a door-end side structure that does not come into contact with the door, and a lower frame side structure in which, when the door is closed in a non-waterlogged state, a lower frame elastic water-stopping member arranged on the lower frame of the door frame comes into contact with or does not come into contact with the door with a pressure gradient from the hanging side to the door end side from the compression pressure in the hanging side structure to the compression pressure in the door end side structure or a non-contact state, and further, when the door is closed in a waterlogged state, the door is allowed to rotate to compress the door-end side elastic water-stopping member to a state where watertightness is exhibited by water pressure, so that there is no need for prior installation work when used, and no special force is required to close the door, making it suitable for everyday use.

[0114] Finally, the above-mentioned embodiments are merely examples of the present invention, and the present invention is not limited to the above-mentioned embodiments. Therefore, even if the above-mentioned embodiments are different, various modifications can be made depending on the design, etc., as long as they do not deviate from the technical idea of ​​the present invention. [Explanation of symbols]

[0115] 11a Hanging side elastic water-stopping member 11b Door end elastic water stopper member 11c Lower frame elastic water-stopping member 12 Door frame 12a Hanging side vertical frame 12b Door end vertical frame 12c bottom frame 13 Door 13a Hanging side edge 13b Door edge 13c Lower margin 13e Hanging side corner 18a Inner circumferential surface of protection side hanging base 18b Protective side door end inner circumference 18c Inner surface of lower frame on protective side 22 Elastic sealing member 23 Screw holes 24 Rotation allowance 40 Watertight door device 70 Auxiliary water-stopping material S,T Water stop structure S1, T1 Hanging side structure S2, T2 Door end structure S3, T3 Lower frame structure d5 Corner non-contact / watertight width under normal conditions d6 Easy-to-close width in normal conditions / watertight width when submerged

Claims

1. A waterproof structure that prevents water from entering through gaps in the door frame at least on the left and right bottom three sides of a closed hinged door by using elastic waterproof members arranged along the said edges, When the door is closed in a non-water-filled state and not subjected to water pressure, a hanging-side elastic water-stopping member disposed on the hanging-side vertical frame of the door frame is compressed with a pressure that exerts watertightness between the door and the hanging-side elastic water-stopping member. A door-end structure in which, when the door is closed in a non-flooded state, the door-end elastic water-stopping member arranged on the door-end vertical frame of the door frame is compressed between the door and the door at a pressure equal to or less than the contact pressure at which a limit of elastic force that allows the door to be easily closed by hand is generated, or does not come into contact with the door; When the door is closed in a non-submerged state, a bottom frame elastic water-stopping member arranged in the bottom frame of the door frame is in contact with or out of contact with the door with a pressure gradient from the hanging side to the door end side, from the compression pressure in the hanging side structure to the compression pressure or out of contact state in the door end side structure. The door is allowed to rotate in order to compress the door end elastic water-stopping member to a state where water-tightness is exerted by water pressure when the door is closed in a flooded state, Each of the elastic water-stopping members is disposed on the door frame so as to abut against a region of the door facing a door stop of the door frame on the inside when the door is closed in a flooded state, a contact pressure adjusting means for adjusting the contact pressure of each of the elastic water-stopping members against the door; The lower frame elastic water-stopping member comprises a long base member having a generally J-shaped cross section and a screw hole formed therein, a long support member having a generally U-shaped cross section and a long screw hole formed in a position opposite the screw hole of the base member, and an elastic seal member having a generally rectangular cross section and is constructed by placing the bottom surface of the support member opposite the wide surface on the inner side of the bend of the base member, aligning it in the longitudinal direction and a predetermined width inward from the edge of the wide surface to form a seal member placement space, and placing an elastic seal member in the seal member placement space; The bottom frame elastic water-stopping member is disposed on the bottom frame of the door frame by inserting screws into the screw holes of the base member and the support member to fix them, A water-stopping structure characterized in that the contact pressure adjusting means adjusts the front-to-rear attachment position of the elastic seal member together with the support member by using an elongated screw hole formed in the support member.

2. The water-stopping structure described in claim 1, characterized in that the hanging side elastic water-stopping member is arranged at a position on the door end side orientation surface of the hanging side vertical frame so as not to come into contact with the hanging side corner when the door is opened or closed.

3. A water-stopping structure as described in claim 1, characterized in that it is provided with an auxiliary water-stopping member for preventing water from entering through gaps in the door frame when the door is flooded with water at a water pressure that is lower than the water pressure at which the watertightness of the door-end elastic water-stopping member is demonstrated.

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