JP2023075548A - Watertight device - Google Patents

Abstract

To provide a watertight device that can maintain good watertight performance between the lower end surface of a watertight member and the installation surface of the watertight member.SOLUTION: A watertight device 1 of the present invention is installed to seal an opening, and includes a watertight member 2 installed on an installation surface (a bottom inner surface 14 of a door frame 10) and watertight maintaining means 3, 5, 5 provided between the bottom end surface of the watertight member 2 and the installation surface, in which the watertight member 2 is provided at the bottom end side thereof with a force receiving portion 4 for receiving a force to maintain the watertight of the watertight maintenance means 3, 5, 5 provided between the installation surface and the watertight member 2.SELECTED DRAWING: Figure 7

Description

The present invention relates to a water stop device for preventing water from passing through an opening.

2. Description of the Related Art A water stop device is known that is installed on the lower side of an opening inside a door frame provided in a building structure to prevent water from passing through the opening (see Patent Document 1).
Further, there is known a water stop device installed in front of a doorway (opening) to prevent water from passing through the doorway (see Patent Document 2).

JP 2014-218794 A JP 2020-193517 A

However, in the water stop device disclosed in Patent Document 1, a lower seal is provided on the lower end face of the water stop plate as a water stop member. However, since the water stop plate is installed only so that the lower seal on the lower end surface of the water stop plate and the lower inner surface of the door frame (surface on which the water stop plate is installed) are in contact with each other, the lower end surface of the water stop plate and the door frame The lower seal between the lower inner surface of the door frame cannot be sufficiently compressed, and the watertight performance between the lower end surface of the waterstop and the lower inner surface of the door frame may not be maintained well.
In addition, in the water stop device disclosed in Cited Document 2, by pressing the upper part of the water stop plate as a water stop member downward, the gap between the lower end surface of the water stop plate and the passage (installation surface of the water stop plate) It has a T-shaped handle that compresses the packing of the However, since the T-shaped handle only presses downward the upper portions of the left and right ends of the water stop plate, there is a gap between the lower end surface of the water stop plate and the passage at the center between the left and right sides of the water stop plate. packing cannot be sufficiently compressed, and there is a possibility that good watertight performance cannot be maintained between the lower end surface of the water stop plate and the passage.
That is, according to the conventional water stop device, there is a problem that the watertight performance between the lower end surface of the water stop plate as a water stop member and the installation surface of the water stop plate may not be maintained satisfactorily.

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a water stop device capable of maintaining good watertight performance between the lower end surface of a water stop member and the installation surface of the water stop member.

A water stop device according to the present invention is a water stop device that is installed so as to close an opening, the water stop member installed on an installation surface, and between the lower end surface of the water stop member and the installation surface. The watertightness maintaining means provided on the lower end side of the watertightness member has a force for maintaining the watertightness maintenance means provided between the bottom end surface of the watertightness member and the installation surface in a watertight state. It is characterized by comprising a force receiving portion for receiving.
In addition, the watertightness maintaining means is composed of a watertightness maintaining means on the side of the waterstopping member provided in the waterstopping member and a watertightness maintaining means on the side of the opening provided in the waterstopping member. The means is provided continuously over the left end surface, the lower end surface and the right end surface of the water cutoff member, and the watertightness maintaining means on the opening side is provided at the boundary portion between the left end surface and the lower end surface of the water cutoff member. provided in the vicinity of the boundary between the left and lower surfaces of the opening facing each other, and in the vicinity of the boundary between the right and lower surfaces of the opening facing the boundary between the right and lower surfaces of the waterproof member, Between the lower end surface of the water stop member installed to block the opening and the lower surface of the opening, between the left end surface of the water stop member and the left surface of the opening, between the right end surface of the water stop member and the The watertightness maintaining means between the right side of the opening is maintained in a watertight state.
The opening is an opening inside a door frame to which a hinged door is attached so that it can be opened and closed. A lower plate portion to be formed, a left plate portion forming a left end surface facing the left inner surface of the door frame that is the left surface of the opening, and a right end surface that is the right surface of the opening and is opposed to the right inner surface of the door frame. a right plate portion to be formed, a wall plate portion connecting the rear edge of the lower plate portion, the rear edge of the left plate portion and the rear edge of the right plate portion, the wall plate portion and the lower plate portion and a recess formed by the left plate portion and the right plate portion, a lower locking portion extending from the front edge of the lower plate portion and locking to the door stop on the lower side of the door frame, A left engaging portion that extends from the front edge of the left plate portion and engages the door stop on the left side of the door frame, and a left engaging portion that extends from the front edge of the right plate portion and engages the door stop on the right side of the door frame. and the force receiving portion extending forward from the lower end side of the lower locking portion, and the water stop member is installed in a predetermined state on the lower side of the opening so that the door is closed. When the door is closed, the force-receiving portion is pressed down by receiving force from the door, thereby maintaining watertightness between the lower end surface of the water stop member and the lower inner surface of the door frame, which is the lower surface of the opening. It is characterized in that the means are kept watertight.
Further, when the water stop member is installed in a predetermined state on the lower side of the opening so that the front surface of the lower engaging portion constitutes a vertical surface, the upper surface of the force receiving portion is the lower engaging portion. It is characterized in that it is configured as an inclined surface extending obliquely downward to the front side from the lower end side of the part.
According to the water stop device of the present invention, by providing the force receiving portion, the watertight maintenance means between the lower end surface of the water stop member and the mounting surface of the water stop member can be maintained in a watertight state. Therefore, it is possible to provide a water stop device capable of maintaining good watertight performance between the lower end surface of the water stop member and the installation surface of the water stop member.

The front view which looked at the state installed so that the water stop device might close the lower part side of opening inside a door frame from the front side (outdoor side). The perspective view which shows the relationship between a water stop device and opening of a door frame. The perspective view which looked at the waterproofing member from the rear side. The perspective view which looked at the waterproofing member with a watertightness maintenance means from the back side. FIG. 4 is a perspective view showing the relationship between the watertightness maintenance means provided at the lower corner of the opening of the door frame and the watertightness member with the watertightness maintenance means on the side of the opening. The perspective view which shows the water stop device installed in the lower part side of opening of a door frame. FIG. 6 is a cross-sectional view showing a water stop device installed on the lower side of the opening of the door frame (cross-sectional view along line AA in FIG. 6); Sectional drawing which shows the state of the lower corner part of the opening of a door frame in the water stop apparatus installed in the lower side of the opening of a door frame.

Embodiment 1
A water stop device 1 according to Embodiment 1 will be described below with reference to FIGS. 1 to 8. FIG.
A water stop device 1 according to Embodiment 1 is a water stop device for blocking an opening having a left surface, a right surface, and a lower surface to prevent water from passing through the opening. 1 is a water stop device 1 for blocking the lower side of an inner opening 11 in a door frame 10 of a door 9 provided in a building structure to prevent passage of water through the opening 11. FIG.
In this specification, up, down, left, right, front, and rear are defined as the directions shown in FIGS.
The front side of the opening 11 is "one of the indoor side and the outdoor side," and the rear side of the opening 11 is "one of the indoor side and the outdoor side." A case where the side is the outdoor side and the rear side of the opening 11 is the indoor side will be described as an example.
The term "building structure" refers to so-called buildings such as single-family homes, condominiums, buildings, warehouses, and factories, exterior structures such as garages, carports, gates, and fences, and structures such as tunnels and underground malls.

As shown in FIG. 1, the door 9 is, for example, a swing door type entrance door.
A door 9 is attached to the door frame 10 via a hinge 91 so that it can be opened and closed. FIG. 1 illustrates the door 9 which is attached to the right side (right frame) of the door frame 10 via a hinge 91 and is rotatable to the front side (outdoor side) about the hinge 91 as the center of rotation.
The left inner surface 12 , right inner surface 13 , lower inner surface 14 and upper inner surface 15 of the door frame 10 constitute the left surface, right surface, lower surface and upper surface of the inner opening 11 of the door frame 10 .
The door stop 16 on the left side of the door frame 10 is a left frame front portion extending leftward from the front edge of the left inner surface 12 of the door frame 10 .
The door stop 17 on the right side of the door frame 10 is a right frame front portion extending rightward from the front edge of the right inner surface 13 of the door frame 10 .
The door stop 18 on the lower side of the door frame 10 is a lower frame front portion that extends downward from the front edge of the lower inner surface 14 of the door frame 10 .
The door stop 19 on the upper side of the door frame 10 is the front portion of the upper frame that extends upward from the front edge of the upper inner surface 15 of the door frame 10 .
That is, the door stops 16, 17, 18, and 19 of the door frame 10 are front portions of the inner frame portion 10A facing the peripheral edges of the door surface 92 on the rear side (indoor side) of the closed door 9. , the door stops 16, 17, 18, 19 are arranged such that the peripheral edge portion of the door surface 92 of the door 9 and the door frame 10 are not in direct contact, and the peripheral edge portion of the door surface 92 of the door 9 and the door frame A cushioning material called "airtight rubber" or the like is provided in order to ensure close contact with 10 (see cushioning material 20 in FIG. 7).
An outer frame portion 10B having a size surrounding the inner frame portion 10A is provided in front of the doorstops 16, 17, 18, and 19, and the closed door 9 is provided inside the outer frame portion 10B. It is configured to fit (see FIG. 7).

As shown in FIGS. 1 and 2, the water stop device 1 has a structure including a water stop member 2 and watertight maintenance means 3 and 5. As shown in FIGS.
That is, the water shutoff device 1 includes a water shutoff member 2, a watertightness maintaining means 3 on the water shutoff member side provided in the water shutoff member 2, and a watertightness maintaining means 5 on the opening side provided in the opening 11. Configured.

Watertightness member 2 has watertightness maintaining means 3 and 5 positioned between lower end surface 24 of watertightness member 2 and lower inner surface 14 of door frame 10 as an installation surface of watertightness member 2 on the lower end side. A force receiving portion 4 is provided for receiving a force to maintain the state.

That is, as shown in FIGS. 2 and 3, the water shutoff member 2 includes a wall plate portion 2a, a left plate portion 2b, a right plate portion 2c, a lower plate portion 2d, an upper plate portion 2e, and a left engagement member. A stop portion 6 , a right locking portion 7 , a lower locking portion 8 , and a force receiving portion 4 are provided.
As shown in FIG. 3, the outer plate surfaces of the left plate portion 2b, the right plate portion 2c, and the lower plate portion 2d extending from the wall surface 21b serving as the wall surface on the rear side (indoor side) of the wall plate portion 2a provide a stop. A left end surface 22, a right end surface 23, and a lower end surface 24 of the water member 2 are formed. That is, the water stop member 2 may be configured without the upper plate portion 2e.
That is, the water stop member 2 includes at least a lower plate portion 2d forming a lower end surface 24 facing the lower inner surface 14 of the door frame 10, which is the lower surface of the opening 11, and a left inner surface of the door frame 10, which is the left surface of the opening 11. 12, a right plate portion 2c forming a right end surface 23 facing the right inner surface 13 of the door frame 10, which is the right surface of the opening 11, and the lower plate portion 2d. The wall plate portion 2a connecting the edge, the rear edge of the left plate portion 2b, and the rear edge of the right plate portion 2c, the wall plate portion 2a, the left plate portion 2b, the right plate portion 2c, and the lower plate portion 2d. , a lower locking portion 8 extending from the front edge of the lower plate portion 2d and locking to the doorstop 18 on the lower side of the door frame 10, and extending from the front edge of the left plate portion 2b and a left engaging portion 6 that engages the door stop 16 on the left side of the door frame 10, and a right engaging portion that extends from the front edge of the right plate portion 2c and engages the door stop 17 on the right side of the door frame 10. 7 and a force receiving portion 4 extending forward from the lower end side of the lower engaging portion 8 .
That is, the left inner surface 12, the right inner surface 13, the lower inner surface 14, and the upper inner surface 15 of the door frame 10 described above are the inner surfaces of the inner frame portion 10A, and the water stop member 2 is the inner surface of the inner frame portion 10A. A left end surface 22, a right end surface 23, and a lower end surface 24 facing the left inner surface 12, the right inner surface 13, and the lower inner surface 14 of the door frame 10; 18, a left engaging portion 6, a right engaging portion 7, a lower engaging portion 8, a force receiving portion 4 provided so as to extend from the lower engaging portion 8, a left end face 22, a right end A surface 23 and a wall plate portion 2a provided so as to connect the rear ends of the lower end surface 24 are provided.
The rear edge described above is the edge positioned on the indoor side when the water shutoff member 2 is installed on the lower side of the opening 11. 11 is positioned on the outdoor side when installed on the lower side.
The front-to-rear width dimensions of the left end surface 22, the right end surface 23, and the lower end surface 24 of the water cutoff member 2 are set to a dimension (for example, 5 cm or more) that is larger than the plate thickness dimension of the plate forming these end surfaces.

The wall plate portion 2a is formed of, for example, a rectangular flat plate having a plate surface orthogonal to the front-rear direction, and the lateral width dimension of the plate surface forming the wall surfaces 21a and 21b of the wall plate portion 2a is the left side of the door frame 10. It is formed to have a dimension slightly smaller than the dimension between the inner surface 12 and the right inner surface 13, and the vertical width dimension of the plate surface (wall surfaces 21a, 21b) is the dimension between the lower inner surface 14 and the upper inner surface 15 of the door frame 10. It is formed to have a dimension smaller than the dimension, for example, about 1/5 to 1/2 of the dimension between the lower inner surface 14 and the upper inner surface 15 .
The left plate portion 2b is formed of a flat plate extending forward from the left edge of the wall plate portion 2a.
The right plate portion 2c is formed of a flat plate extending forward from the right edge of the wall plate portion 2a.
The lower plate portion 2d is formed of a flat plate extending forward from the lower edge of the wall plate portion 2a.
The upper plate portion 2e is formed of a flat plate extending forward from the upper edge of the wall plate portion 2a.
That is, the water stop member 2 includes a recessed portion 2U surrounded by the wall plate portion 2a, the left plate portion 2b, the right plate portion 2c, the lower plate portion 2d, and the upper plate portion 2e. is configured to

The left engaging portion 6 is provided so as to extend from the left end surface 22 of the water stop member 2 . That is, the left locking portion 6 is formed by a flat plate extending leftward from the front edge of the left plate portion 2b, and is a portion that locks onto the left door stop 16 of the door frame 10. As shown in FIG.
The right engaging portion 7 is provided so as to extend from the right end surface 23 of the water cutoff member 2 . In other words, the right locking portion 7 is a portion formed of a flat plate extending rightward from the front edge of the right plate portion 2c and engaged with the door stop 17 on the right side of the door frame 10. As shown in FIG.
The lower engaging portion 8 is provided so as to extend from the lower end surface 24 of the water cutoff member 2 . In other words, the lower engaging portion 8 is formed by a flat plate extending downward from the front edge of the lower plate portion 2d and engaged with the door stop 18 on the lower side of the door frame 10. .

In the water stop member 2, for example, the wall surfaces 21a and 21b of the wall plate portion 2a are orthogonal to the plate surfaces of the left plate portion 2b, the right plate portion 2c, the lower plate portion 2d, and the upper plate portion 2e. and the plate surface of the left engaging portion 6 are perpendicular to each other, the plate surface of the right plate portion 2c and the plate surface of the right engaging portion 7 are perpendicular to each other, the plate surface of the lower plate portion 2d and the lower engaging portion It is formed so as to be perpendicular to the plate surface of the portion 8 .

The force receiving portion 4 has an upper surface 41 that slopes downward toward the front side (outdoor side) in a state in which the water stop member 2 is installed so as to block the lower side of the opening 11 of the door frame 10. , is provided at the lower end of the water stop member 2. As shown in FIG.
Specifically, in a state in which the water stop member 2 is installed so as to block the lower side of the opening 11 of the door frame 10 , the force receiving portion 4 serves as the lower end portion of the water stop member 2 . A plate provided to extend from the lower end, that is, an inclined surface that extends downward from the lower end of the front surface (outdoor surface) 81 of the lower locking portion 8 toward the front side (outdoor side) It is composed of a force receiving plate having a formed upper plate surface (upper surface) 41 .
That is, the force receiving portion 4 is inclined forward obliquely downward from the lower end of the lower engaging portion 8 provided continuously between the lower front end of the left plate portion 2b and the lower front end of the right plate portion 2c. It is composed of a force receiving plate provided so as to extend. In other words, the force receiving portion 4 is provided continuously across the left and right width of the wall plate portion 2a of the water stop member 2, and the upper surface 41 is a force receiving plate formed on an inclined surface that slopes obliquely downward to the front side. It is configured.
Incidentally, the force receiving portion 4 may be provided so as to extend from at least the lower end side of the lower engaging portion 8 .

The waterproof member 2 is formed of, for example, a metal plate such as a steel plate or an aluminum plate, a synthetic resin plate, or the like.
The method of manufacturing the water stop member 2 is not particularly limited, but for example, the wall plate portion 2a, the left plate portion 2b, the right plate portion 2c, the right plate portion 2c, the lower plate portion 2d, the left locking portion 6, the right locking portion, and the like. After forming a plate in which each portion of the stop portion 7, the lower locking portion 8, and the force receiving portion 4 is developed, the boundaries of each portion are bent.
Note that the wall plate portion 2a, the left plate portion 2b, the right plate portion 2c, the right plate portion 2c, the lower plate portion 2d, the left locking portion 6, the right locking portion 7, the lower locking portion 8, and the force receiving portion 4 At least part of each part may be separately produced, and the water stop member 2 may be manufactured by combining the individually produced parts.

The watertight maintenance means 3 includes a left end surface 22, a lower end surface 24, and a right end surface 23 of the water stop member 2, and wall plates that are surfaces continuous with the left end surface 22, the lower end surface 24, and the right end surface 23 of the water stop member 2. The wall surface (the wall surface located on the indoor side) 21b of the portion 2a is provided continuously over the left end side, the lower end side, and the right end side.
In this case, as the watertightness maintaining means 3, for example, the length reaches the upper end of the right end surface 23 via the left end surface 22, the lower end surface 24, and the right end surface 23 from the upper end of the left end surface 22 of the waterproof member 2. The length dimension and width until the end face (left end face 22, lower end face 24, right end face 23) of the water stop member 2 and the end side (left end side, lower end side, right end side) of the wall surface 21b of the wall plate portion 2a A watertightness maintaining means 3 formed in a long plate-like shape with a predetermined thickness and having a width dimension capable of covering the watertightness is used.
Then, one plate surface of the plate-like watertightness maintaining means 3 is attached to the end surfaces (left end surface 22, lower end surface 24, right end surface 23) of the water stop member 2 using a mounting means such as double-sided adhesive tape or adhesive. and the end side (left end side, lower end side, right end side) of the wall surface 21b of the wall plate portion 2a, as shown in FIG. A water shutoff member 2A with a watertight maintenance means is provided continuously over the end surface 24, the right end surface 23, and the left end side, the lower end side, and the right end side of the wall surface (indoor side wall surface) 21b of the wall plate portion 2a. will be
That is, the water shutoff member 2A with watertight maintenance means has a length from the upper end side (for example, the upper end or near the upper end) of the left end surface 22 of the water shutoff member 2 via the left end surface 22, the lower end surface 24, and the right end surface 23. The length and width until reaching the upper end (for example, the upper end or near the upper end) of the right end surface 23 are the same as the left end surface 22, the lower end surface 24, the right end surface 23 of the water stop member 2 and the wall surface (roof) of the wall plate portion 2a. One plate surface of the watertight maintenance means 3 formed in a long plate shape with a predetermined thickness and having a width dimension capable of covering the left end side, the lower end side, and the right end side of the inner wall surface 21b is a stop. It is attached to the left end surface 22, the lower end surface 24, and the right end surface 23 of the water member 2, and the left end side, the lower end side, and the right end side of the wall surface (indoor side wall surface) 21b of the wall plate portion 2a.
The water-tightness member 2A with the water-tightness maintaining means has a left-right dimension between the left end surface 22 and the right end surface 23 of the water-tightness member 2 that is the left-right dimension between the left inner surface 12 and the right inner surface 13 of the door frame 10. and provided on the outer surface (the other plate surface) of the watertight maintenance means 3 provided on the left end surface 22 of the water stop member 2 and the right end surface 23 of the water stop member 2 The lateral dimension between the outer surface (the other plate surface) of the watertightness maintaining means 3 is slightly larger than the lateral dimension between the left inner surface 12 and the right inner surface 13 of the door frame 10. It has a configuration.
Therefore, when installing the watertightness member 2A with the watertightness maintaining means on the lower side of the opening 11 of the door frame 10, the watertightness maintenance means 3 provided on the left end surface 22 of the watertightness member 2 is placed on the left side of the door frame 10. The watertightness maintaining means 3 provided on the right end surface 23 of the watertightness member 2 is pressed against the right inner surface 13 of the door frame 10, thereby fitting the watertightness member 2A with the watertightness maintenance means into the opening 11. After that, the water shutoff member 2A with the watertight maintenance means can be easily installed on the lower side of the opening 11 of the door frame 10 by pressing the water shutoff member 2A with the watertightness maintenance means downward.
In addition, in the water-stopping member 2A with the water-tightness maintaining means, the front-rear width dimension of the left end face 22, the right end face 23, and the lower end face 24 of the water-stopping member 2 is made larger than the plate thickness dimension of the plate forming these end faces. The water shutoff member 2A with the watertight maintenance means is set so that it is easy to stand on its own when installed.
Furthermore, the frictional force between the watertight maintenance means 3 provided on the left end surface 22 of the water cutoff member 2 and the left inner surface 12 of the door frame 10, and the watertightness maintenance means 3 provided on the right end surface 23 of the water cutoff member 2 Frictional force with the right inner surface 13 of the door frame 10 allows the water shutoff member 2A with the watertight maintenance means to be maintained in a self-supporting state, which facilitates the installation work.
As described above, according to Embodiment 1, it is possible to provide the waterproof member 2A with watertight maintenance means that is excellent in installation workability.

In addition, as shown in FIG. 4, the watertight maintenance means 3 includes the left end surface 22, the lower end surface 24, and the right end surface 23 of the water shutoff member 2, and the left end side of the wall surface (indoor side wall surface) 21b of the wall plate portion 2a, When the water shutoff member 2A with the watertightness maintaining means is continuously provided from the lower end side to the right end side, the watertightness member 2A with the watertightness maintaining means covering the corner a of the watertightness member 2 is effectively be able to produce well.
The angle a is the boundary angle between the left end surface 22 and the lower end surface 24 of the water stop member 2, the boundary angle between the right end surface 23 and the lower end surface 24 of the water stop member 2, the left end surface 22 of the water stop member 2, and the lower end surface 24. This is the boundary angle between the end face 24, the right end face 23, and the wall surface 21b of the wall plate portion 2a (see FIG. 3).

For example, the left end surface 22, the lower end surface 24, the right end surface 23 of the water stop member 2, the left end side, the lower end side, and the right end side of the wall surface (indoor side wall surface) 21b of the wall plate portion 2a. When the watertightness maintaining means 3, 3... are prepared and the watertightness maintaining means 3 is individually attached to each part to form a water shutoff member with the watertightness maintaining means, the watertightness member with the watertightness maintaining means is used. Since it is necessary to individually attach the watertightness maintaining means 3 in the manufacturing process, the production efficiency of the waterproof member with the watertightness maintaining means deteriorates.
In addition, since the individual watertightness maintaining means 3, 3, ... are separately adhered to each part, the adhesion area of each individual watertightness maintaining means 3, 3, ... is reduced, and the individual watertightness maintaining means 3, 3, ... is reduced. As a result, the watertightness performance deteriorates, and when the water stop member 2 is installed, the corner a of the water stop member 2 is exposed and damages the left inner surface 12, the right inner surface 13, and the lower inner surface 14 of the door frame 10. There is a high possibility that it will be lost.

On the other hand, according to the embodiment, the watertightness maintaining means 3 includes the left end surface 22, the lower end surface 24, the right end surface 23 of the water cutoff member 2, and the left end side and the lower end of the wall surface (indoor side wall surface) 21b of the wall plate portion 2a. Since the water shutoff member 2A with the watertightness maintaining means is continuously provided over the side and the right end side, the productivity of the watertightness member 2A with the watertightness maintaining means can be improved.
In addition, since the adhesion area of the watertightness maintaining means 3 to the surface of the watertightness member 2 can be increased, the watertightness maintaining means 3 is less likely to come off, and a watertightness member 2A with a watertightness maintenance means can be provided that can suppress deterioration in watertight performance. .
In addition, since the watertightness member 2A with the watertightness maintenance means 3 covering the corner a of the watertightness member 2 can be configured, the watertight performance is lowered and the left inner surface 12, the right inner surface 13, and the lower side of the door frame 10 are prevented. It is possible to provide a water cutoff member 2A with a watertightness maintaining means that can prevent the inner surface 14 from being damaged.

In addition, as shown in FIG. 4, the watertightness maintaining means 3 includes the left end surface 22, the lower end surface 24, and the right end surface 23 of the water shutoff member 2, and the left end side of the wall surface (indoor side wall surface) 21b of the wall plate portion 2a, When the water shutoff member 2A with the watertightness maintaining means is provided continuously from the lower end side to the right end side, the outside of the boundary between the left end surface 22 and the lower end surface 24 of the water shutoff member 2 and the water shutoff member 2A. The outer surface of the watertight maintenance means 3 covering the outside of the boundary between the right end surface 23 and the lower end surface 24 of the water member 2 becomes curved surfaces 3R, 3R.
Therefore, between the boundary between the left inner surface 12 of the door frame 10 (the left surface of the opening 11) and the lower inner surface 14 of the door frame 10 (the lower surface of the opening 11) and the left curved surface 3R, and the door frame 10 Between the curved surface 3R and the boundary between the right inner surface 13 (right surface of the opening 11) and the lower inner surface 14 (lower surface of the opening 11) of the door frame 10, spaces 5S and 5S are generated (Fig. 8 reference).
Therefore, as shown in FIG. The vicinity of the boundary portion between the left inner surface 12 and the lower inner surface 14 of the door frame 10 facing the boundary portion between the left end surface 22 and the lower end surface 24 of the member 2, that is, the lower left and right corners of the opening 11 of the door frame 10 After installing the watertight maintenance means 5 on the opening 11 side in the part, as shown in FIGS. The door 9 is closed.
As a result, the left and right curved surfaces 3R, 3R of the lower part of the watertight maintenance means 3 of the water shutoff member 2A with the watertightness maintenance means and the left and right end sides of the lower inner surface 14 of the door frame 10 (lower left and right corner portions of the opening 11) are formed. The watertight maintenance means 5, 5 on the side of the opening 11 installed in the space 5S are crushed to be in close contact (see FIG. 8), and the space 5S is maintained in a watertight state by the opening side watertight maintenance means 5, and the space 5S is maintained in a watertight state by the opening 11. It becomes possible to configure the water stop device 1 that can prevent the passage of water.
That is, the left end surface 22, the lower end surface 24, and the right end surface 23 of the water stop member 2 face the left surface, the lower surface, and the right surface of the opening 11 (the left inner surface 12, the lower inner surface 14, and the right inner surface 13 of the door frame 10), and , between the lower end face 24 of the water stop member 2 and the lower face of the opening 11, between the left end face 22 of the water stop member 2 and the left face of the opening 11, between the right end face 23 of the water stop member 2 and the right face of the opening 11 By installing the water shutoff member 2A with the watertightness maintaining means so that the watertightness maintaining means 3, 5 between the watertightness maintaining means 3 and 5 are maintained in a watertight state, the water shutoff device 1 capable of preventing passage of water through the opening 11 can be constructed. .

As the watertightness maintenance means 3 on the water cutoff member side and the watertightness maintenance means 5 on the opening side, for example, a rubber sealing material such as a rubber sponge made of EPDM (ethylene propylene diene rubber), which has water swelling performance, is used. However, a sealing material made of other materials may also be used.
As shown in FIG. 8, the left and right curved surfaces 3R, 3R of the lower portion of the watertightness maintaining means 3 of the water stop device 1 and the watertightness maintaining means 5 on the opening side installed on the left and right end sides of the lower inner surface 14 of the door frame 10, 5 are crushed together to be in close contact, the watertightness maintaining means 3 on the water cutoff member side and the watertightness maintaining means 5 on the opening side are, for example, a rubber compounded with a foaming agent. It is preferable to use a semi-closed and semi-open cell type foamed EPDM sealing material in which rubber is formed into a porous structure by gas generated by thermal decomposition of .

After the opening-side watertightness maintaining means 5, 5 are provided at the lower left and right corners of the opening 11 of the door frame 10, the water stop device 1 is installed so as to block the lower side of the opening 11. This state is shown in FIGS. As an example of the door frame 10 shown in FIG. 7, the door frame 10 is provided with an anti-slip member (for example, an anti-slip member having an uneven (waveform) top surface) 14a on the lower inner surface 14 of the door frame 10. ing. In the cross-sectional view of FIG. 7, hatching of the cross-sectional portions of the door 9 and the door frame 10 other than the water stop device 1 is omitted.

An example of a method for configuring the water stop device 1 will be described below with reference to FIGS. 5 to 8. FIG.
First, the opening-side watertight maintenance means 5, 5 are installed at the left and right corners of the opening 11 of the door frame 10 (see FIG. 5).
After that, the water shutoff member 2A with watertight maintenance means is installed in a predetermined state on the lower side of the opening 11 so that the front surface 81 of the lower engaging portion 8 constitutes a vertical surface. For example, the water shutoff member 2A with watertight maintenance means is fitted between the left inner surface 12 and the right inner surface 13 of the door frame 10, and the left engaging portion 6 of the watertightness member 2A with watertightness maintenance means is attached to the door frame 10. After engaging the left side doorstop 16 and engaging the right locking portion 7 of the water shutoff member 2A with the watertight maintenance means with the right doorstop 17 of the door frame 10, the watertightness member 2A with the watertightness maintenance means is engaged. is pushed downward to engage the lower engaging portion 8 of the water shutoff member 2A with the watertight maintenance means with the door stop 18 on the lower side of the door frame 10. - 特許庁That is, the lower side of the opening 11 is closed, the front surface 81 of the lower engaging portion 8 constitutes a vertical surface, and the upper surface (upper plate surface) 41 of the force receiving portion 4 is the front side (outdoor side (when the door 9 opens and closes). The water shutoff member 2A with watertight maintenance means is installed on the lower side of the opening 11 so as to form an inclined surface that slopes downward toward the side )).
As described above, when the water shutoff member 2A with watertight maintenance means is installed in a predetermined state on the lower side of the opening 11, the upper surface (inclined surface) 41 of the force receiving portion 4 and the front surface of the lower engaging portion 8 ( It is configured such that the angle α formed with the vertical plane 81 is greater than 90 degrees (see the enlarged view of part A in FIG. 7).
The angle α may be, for example, about 91 degrees to 100 degrees, but is more preferably set to about 92 degrees to 95 degrees.

After the water shutoff member 2A with watertight maintenance means is installed in a predetermined state on the lower side of the opening 11, the door 9 is closed.
In the process of closing the door 9, the lower end portion 93 of the door surface 92 on the indoor side of the door 9 contacts the upper plate surface 41 of the force receiving portion 4 and presses the upper plate surface 41 downward (see FIG. 7).
That is, when the door 9 is closed with the water shutoff member 2A with the watertight maintenance means installed in a predetermined state on the lower side of the opening 11 (the latch 96 of the doorknob 95 in FIG. 1 is engaged with the latch receiver 97). case), the force receiving portion 4 provided on the lower end side of the water cutoff member 2A with watertight maintenance means is pushed down by the force from the door 9, and the lower end surface 24 of the water cutoff member 2A with watertightness maintenance means is downward. move to
As a result, the gap between the lower end surface 24 of the water-stopping member 2 and the lower inner surface 14 of the door frame 10 (installation surface of the water-stopping member 2 ) is maintained in a watertight state by the watertight maintaining means 3 and 5 , and the water-stopping member 2 is kept watertight. The watertight performance between the lower end surface 24 and the lower inner surface 14 of the door frame 10 can be improved, and the watertight maintenance means 3, 5 between the left end surface 22 of the water stop member 2 and the left inner surface 12 of the door frame 10, Then, the watertight maintenance means 3, 5 between the right end surface 23 of the water shutoff member 2 and the right inner surface 13 of the door frame 10 are maintained in a watertight state, thereby preventing water from passing through the opening 11. A water device 1 is thus constructed.
That is, between the lower end face 24 of the water stop member 2 installed to close the opening 11 and the lower face of the opening 11, between the left end face 22 of the water stop member 2 and the left surface of the opening 11, Thus, the water shutoff device 1 is configured in which the watertightness maintaining means 3 and 5 between the right end surface 23 and the right surface of the opening 11 are maintained in a watertight state.
When the door 9 is closed, as shown in FIG. 7, the door surface 92 of the door 9 on the indoor side is the front surface 81 of the lower locking plate 8 of the water stop member 2 and the front surface of the left locking plate 6. 61, since it contacts or is close to the front surface 71 of the right locking plate 7, it is possible to prevent the water-tightening member 2A with the watertightness maintaining means from falling forward (outdoor side), and the watertightness member 2A with the watertightness-maintaining means can be prevented from falling toward the door. The left and right curved surfaces 3R, 3R of the lower part of the watertightness maintaining means 3 of the watertight member 2A with the watertightness maintaining means and the lower inner surface of the door frame 10 are maintained in the state of being installed on the lower side of the opening 11 of the frame 10. The watertightness maintaining means 5, 5 installed at the left and right ends of 14 are crushed to be in close contact with each other, and as shown in FIG. Thus, the water stop device 1 that can prevent this is constructed.
Therefore, when water rushes from the front side (outdoor side) of the water stop device 1 mounted in a desired state so as to block the lower side of the opening 11 of the door frame 10, the water stop device 1 Intrusion of water to the rear side (indoor side) can be prevented.

That is, according to the water stop device 1 according to Embodiment 1, the opening is the opening 11 inside the door frame 10 to which the swing door type door 9 is attached so that it can be opened and closed, and the water stop member 2 is the opening 11. A lower plate portion 2d forming a lower end surface 24 facing the lower inner surface 14 of the door frame 10 serving as the lower surface, and a left plate portion forming a left end surface 22 facing the left inner surface 12 of the door frame 10 serving as the left surface of the opening 11. 2b, a right plate portion 2c forming a right end surface 23 facing the right inner surface 13 of the door frame 10 which is the right surface of the opening 11, a rear edge of the lower plate portion 2d, a rear edge of the left plate portion 2b and a right edge of the left plate portion 2b. A wall plate portion 2a connecting the rear edge of the plate portion 2c, a concave portion 2U formed by the wall plate portion 2a, the left plate portion 2b, the right plate portion 2c, and the lower plate portion 2d, and the lower plate portion 2d. A lower engaging portion 8 that extends from the front edge and engages with the door stop 18 on the lower side of the door frame 10 , and a lower engaging portion 8 that extends from the front edge of the left plate portion 2 b and engages with the door stop 16 on the left side of the door frame 10 . a right engaging portion 7 extending from the front edge of the right plate portion 2c and engaging the door stop 17 on the right side of the door frame 10; A force receiving portion 4 extending forward is provided.
Further, the watertightness maintaining means is composed of a watertightness maintaining means 3 on the watertightness member side provided in the watertightness member 2 and watertightnessness maintenance means 5, 5 on the opening side provided in the opening 11. The watertightness maintaining means 3 on the side is provided continuously over the left end surface 22, the lower end surface 24, and the right end surface 23 of the water shutoff member 3, and the watertightness maintaining means 5 on the opening side is provided on the left and right end sides of the lower surface of the opening 11. (The left and right corners on the lower side of the opening 11 of the door frame 10).
When the water shutoff member 2A with watertight maintenance means is installed in a predetermined state on the lower side of the opening 11 and the door 9 is closed, the force receiving portion 4 receives force from the door 9 and is pushed down. , the watertight maintenance means 3, 5, 5 between the lower end surface 24 of the water cutoff member 2A and the lower inner surface 14 of the door frame 10 (lower surface of the opening 11) in the watertight member 2A with the watertightness maintenance means are maintained in a watertight state. Therefore, the watertight performance between the lower end surface 24 of the water stop member 2 and the lower inner surface 14 of the door frame 10 (the lower surface of the opening 11 (installation surface of the water stop member 2)) 14 in the water stop member 2A with watertightness maintaining means is A water stop device 1 that can be improved is constructed.

In addition, if the water shutoff member 2A with watertight maintenance means is not installed in a predetermined state on the lower side of the opening 11 of the door frame 10, when the door 9 is to be closed, the door surface on the indoor side of the door 9 92 collides with the front end 4t of the force receiving portion 4. Therefore, the force receiving portion 4 determines whether or not the water shutoff member 2A with watertight maintenance means is correctly installed in a predetermined state on the lower side of the opening 11 of the door frame 10. It also functions as an inspection device for judging
Therefore, when the door surface 92 on the indoor side of the door 9 collides with the front end 4t of the force receiving portion 4, the installation state of the water shutoff member 2A with watertightness maintenance means is confirmed, and the watertightness member 2A with watertightness maintenance means is installed. is correctly installed in a predetermined state, and then the door 9 is closed, so that the water shutoff member 2A with watertight maintenance means can be reliably installed in a desired state. 24 and the lower inner surface 14 of the door frame 10 (surface on which the water shutoff member 2 is installed) can be configured to improve the watertight performance.

Further, in Embodiment 1, when the watertightness member 2A with the watertight maintenance means is attached to the opening 11 of the door frame 10, the watertightness maintenance means 3 contacts the left inner surface 12, the right inner surface 13, and the lower inner surface 14 of the door frame 10. Therefore, the door frame 10 is hardly damaged.
Further, in Embodiment 1, the left engaging portion 6, right engaging portion 7, and lower engaging portion 8 of the water shutoff member 2 are in direct contact with the door stops 16, 17, and 18 of the door frame 10, and the left engaging portion Since there is no member between the stopping portion 6, the right engaging portion 7, the lower engaging portion 8 and the door stops 16, 17, 18 of the door frame 10, the door 9 cannot be closed as intended. As a result, it is possible to provide a water shutoff member 2A with a watertightness maintaining means which hardly impairs the original functions of the door 9 such as the opening/closing operation and the locking operation of the door 9.例文帳に追加

In the first embodiment, as shown in FIG. 4, the watertight maintenance means 3 includes the left end surface 22, the lower end surface 24, and the right end surface 23 of the water shutoff member 2, the left end side of the wall surface 21b of the wall plate portion 2a, The watertightness member 2A with the watertightness maintaining means, which is continuously provided over the respective parts on the lower end side and the right end side, has been exemplified. It may be a water cutoff member with a watertight maintenance means having a configuration in which is provided.

In addition, the watertightness maintaining means 3 is provided continuously over the left end surface 22, the lower end surface 24, and the right end surface 23 of the watertightness member 2. , a water-tightness member with a water-tightness maintaining means may be used, which is individually provided at each of the left end surface 22, the lower end surface 24, and the right end surface 23 of the water-stopping member 2, respectively. That is, although it is preferable to provide the watertightness maintaining means 3 for covering the left end side, the lower end side, and the right end side of the wall surface 21b of the wall plate portion 2a, it is not necessary to provide it.
In this case, as the watertightness maintaining means 3, for example, the length reaches the upper end of the right end surface 23 via the left end surface 22, the lower end surface 24, and the right end surface 23 from the upper end of the left end surface 22 of the waterproof member 2. A watertightness maintaining means 3 is used, which is formed in a long plate-like shape with a predetermined thickness and having a length dimension up to the end of the watertightness.
That is, in this case, the water shutoff member with the watertight maintenance means extends from the upper end side (for example, the upper end or near the upper end) of the left end surface 22 of the water shutoff member 2 to the right end via the left end surface 22, the lower end surface 24, and the right end surface 23. One plate surface of the watertight maintenance means 3 formed in a long plate shape of a predetermined thickness having a length dimension until reaching the upper end side (for example, the upper end or the vicinity of the upper end) of the surface 23 is a water stop member 2 are attached to the left end surface 22, the lower end surface 24, and the right end surface 23 of FIG.
That is, a water-tightness member with a water-tightness maintenance means may be used in which the watertightness maintenance means 3 is provided continuously over the left end surface 22 , the lower end surface 24 and the right end surface 23 of the water-tightness member 2 .

Further, in the first embodiment, the water-tightness maintaining means 5, 5 are installed in advance on the left and right ends of the lower surface of the opening 11 (the lower left and right corners of the opening 11 of the door frame 10). , watertight maintenance means in which watertightness maintenance means 5 having a shape corresponding to the space 5S described above is attached to the left and right curved surfaces 3R, 3R of the lower portion of the watertightness maintenance means 3 of the water shutoff member 2A with watertightness maintenance means. It is good also as a water stop device comprised by the attached water stop member.
Further, as described above, in the case of configuring the water shutoff member with watertightness maintaining means in which the watertightness maintaining means 3 is individually provided at each part of the watertightness member 2, the watertightness keeping member with the watertightness maintaining means The water shutoff device may be configured by a water shutoff member with a watertightness maintenance means having a watertightness maintenance means 5 provided in a portion of the water member corresponding to the space 5S.

In addition, without using a waterproof member with a watertightness maintaining means, the lower inner surface 14 of the door frame 10 that is the lower surface of the opening 11, the left inner surface 12 of the door frame 10 that is the left surface of the opening 11, and the door frame that is the right surface of the opening 11. A water shutoff device may be configured such that after installing a watertight maintenance member on the right inner surface 13 of the door frame 10 in advance, the water shutoff member 2 described above is installed in a desired state on the lower side of the opening 11 of the door frame 10 .

Further, in Embodiment 1, the water-stopping member 2A with watertightness maintaining means is positioned at the lower side of the opening 11 so that the front surface 81 of the lower engaging portion 8 of the water-stopping member 2A forms a vertical plane. When installed in the state of , the upper surface 41 of the force receiving portion 4 is configured as an inclined surface that extends forward and downward from the lower end of the lower locking portion 8, and the front surface 81 of the lower locking portion 8 and the An example is shown in which the angle α between the force receiving portion 4 and the upper surface 41 satisfies 90°<α<100°. It may also be configured in a more forwardly extending plane, for example a horizontal plane.
Even in this case, if the lower end portion 93 of the closed door 9 is set in contact with the upper surface 41 of the force receiving portion 4, the force receiving portion 4 receives the force from the door 9 and is maintained in the depressed state. As a result, the watertight maintenance means 3, 5, 5 between the lower end surface 24 of the water cutoff member 2 and the lower surface 14 of the opening 11 (the lower inner surface of the door frame 10 (installation surface of the water cutoff member 2)) are in a watertight state. This is because the same effect as in the first embodiment can be obtained.

Embodiment 2
In Embodiment 1, the case where the lower side of the opening 11 inside the door frame 10 of the swing door type door 9 provided in the building structure is closed with the water stop device 1 was illustrated, but the water stop of the present invention is illustrated. The configuration of the device includes openings other than hinged doors, such as the inner opening in the door frame of a sliding door (entrance sliding door, automatic door, etc.), the opening between the left and right guide rails of the shutter device, gates and fences. The present invention can also be applied to a water stop device that closes an opening that constitutes an entrance, such as a port, or other openings to prevent passage of water. In other words, the opening that can be blocked by the waterproof device of the present invention to prevent passage of water may be an opening having a left surface, a right surface and a lower surface.

For example, after installing the water shutoff member 2A with the watertight maintenance means described in the first embodiment in a predetermined state on the lower side of the opening other than the hinged door type described above, the force receiving portion 4 of the water shutoff member 2A is pressed downward. A door-like member may be provided instead of the door to be used. As in the first embodiment, it is preferable to install watertightness maintaining means 5, 5 in advance on the left and right end sides of the lower surface of the opening (the left and right corners on the lower side of the opening).
In this case, the door-like member may be attached to the mounting portions such as frames and posts located on the left and right sides of the opening so as to be rotatable in the same manner as the door 9 by using hinges or the like.
Further, the door-like member may be non-rotatably fixed to a fixed part such as a frame body or a post positioned on the left and right sides of the opening. In this case, the force-receiving portion of the water-stopping member 2A with the watertightness maintaining means is, for example, a force-receiving portion formed so that the upper surface becomes a horizontal surface when the water-stopping member 2A is installed on the installation surface. After the above-described door-shaped member is placed on the upper surface of the force-receiving portion and the force-receiving portion is pressed downward, the door-shaped member may be fixed to the fixing portion.
Even in this manner, similarly to the first embodiment, it is possible to improve the watertight performance between the lower end surface of the water stop member 2 and the lower surface of the opening (surface on which the water stop member is installed).

Further, for example, as in Patent Document 2, when configuring a water stop device that is installed on the lower side, for example, in front of an opening other than the hinged door type and prevents the passage of water through the opening, the water stop member A force receiving portion extending forward from the lower edge of the front surface is provided, and after the above-described door-shaped member is placed on the upper surface of the force receiving portion and the force receiving portion is pressed downward, the door-shaped member is moved to the left and right of the opening. It may be fixed so as not to be rotatable to a fixing portion such as a frame body or a post positioned at the position of the frame.
Even in this way, similarly to the first embodiment, it is possible to improve the watertight performance between the lower end face of the water stop member and the installation surface of the water stop member.
Further, in this case, the water stop member is, for example, a simple flat plate shape that does not include a recess surrounded by the wall plate portion 2a, the left plate portion 2b, the right plate portion 2c, the lower plate portion 2d, and the upper plate portion 2e. and a force receiving portion extending from the lower end of the wall plate portion so as to be orthogonal to the plate surface of the wall plate portion and formed so that the upper surface is a horizontal surface. do it.

Thus, according to each embodiment, the water-stopping member and the watertight maintenance means can constitute a water-stopping device that can prevent water from entering behind the water-stopping member (indoor side).

That is, the water stop device according to the present invention installed so as to close an opening comprises a water stop member installed on the installation surface, and watertight maintenance means provided between the lower end surface of the water stop member and the installation surface. and the water stop member has a force receiving portion on the lower end side for receiving a force for maintaining the watertightness of the watertight maintenance means provided between the lower end surface of the water stop member and the installation surface. With such a configuration, it is possible to provide a water shutoff device capable of improving the watertight performance between the lower end surface of the water shutoff member and the installation surface of the water shutoff member.

In each embodiment, the example in which the force receiving portion is provided continuously along the lateral width direction of the water stop member is shown, but the force receiving portion is located on the center side of the water stop member in the lateral width direction. It is good also as a structure intermittently provided in multiple numbers along the left-right width direction of a water cutoff member.

1 water stop device 2 water stop member 2a wall plate portion of water stop member 2b left plate portion of water stop member
2c the right plate portion of the water stop member, 2d the lower plate portion of the water stop member, 2U the concave portion of the water stop member,
3 watertight maintenance means on the water cutoff member side, 4 force receiving portion, 5 watertightness maintenance means on the opening side,
6 left locking portion 7 right locking portion 8 lower locking portion 9 door 10 door frame
11 inner opening of the door frame, 12 left inner surface of the door frame (left surface of the opening),
13 right inner surface of door frame (right surface of opening), 14 lower inner surface of door frame (lower surface of opening),
16 left door stop, 17 right door stop, 18 bottom door stop,
22 left end face of water stop member, 23 right end face of water stop member,
24 lower end surface of water stop member, 41 upper surface of force receiving portion, 81 front surface of lower locking portion.

Claims (4)

A water stop device installed to block an opening,
a water stop member installed on the installation surface;
watertight maintenance means provided between the lower end surface of the water stop member and the installation surface,
The water-stopping member has a force receiving portion on the lower end side for receiving a force for maintaining the watertightness maintaining means provided between the lower end surface of the water-stopping member and the installation surface in a watertight state. A water stop device characterized by The watertightness maintenance means is composed of a watertightness maintenance means on the side of the waterstopping member provided in the waterstopping member and a watertightness maintenance means on the side of the opening provided in the opening,
The water-tightness maintaining means on the side of the water-stopping member is provided continuously over the left end surface, the lower end surface and the right end surface of the water-stopping member,
The watertightness maintaining means on the opening side is provided in the vicinity of the boundary portion between the left side and the bottom surface of the opening facing the boundary portion between the left end surface and the bottom end surface of the water cutoff member, and the right end surface and the bottom of the water cutoff member. provided in the vicinity of the boundary portion between the right surface and the bottom surface of the opening facing the boundary portion with the end surface,
Between the lower end surface of the water stop member installed to block the opening and the lower surface of the opening, between the left end surface of the water stop member and the left surface of the opening, between the right end surface of the water stop member and the 2. The water stop device according to claim 1, wherein said watertightness maintaining means between the right side of the opening is maintained in a watertight state. The opening is an opening inside a door frame to which a hinged door is attached so that it can be opened and closed,
The water stop member has a lower plate portion forming a lower end surface facing the lower inner surface of the door frame, which is the lower surface of the opening, and a left end surface facing the left inner surface of the door frame, which is the left surface of the opening. a right plate portion forming a right end surface facing a right inner surface of the door frame serving as a right surface of the opening; a rear edge of the lower plate portion; a rear edge of the left plate portion; A wall plate portion connecting the rear edge of the right plate portion, a recess formed by the wall plate portion, the lower plate portion, the left plate portion, and the right plate portion, and a front edge of the lower plate portion. A lower engaging portion that extends to engage with the door stop on the lower side of the door frame, and a left engaging portion that extends from the front edge of the left plate portion and engages with the door stop on the left side of the door frame. a right engaging portion that extends from the front edge of the right plate portion and engages the door stop on the right side of the door frame; and the force receiving portion that extends forward from the lower end side of the lower engaging portion. with
When the water-stopping member is installed in a predetermined state on the lower side of the opening and the door is closed, the force-receiving portion receives force from the door and is pushed down, thereby preventing the water-stopping member from 3. The water shutoff device according to claim 1, wherein a watertight maintaining means between the lower end surface and the lower inner surface of the door frame serving as the lower surface of the opening is maintained in a watertight state. When the water stop member is installed in a predetermined state on the lower side of the opening so that the front surface of the lower engaging portion constitutes a vertical surface, the upper surface of the force receiving portion faces the lower engaging portion. 4. The water stop device according to claim 3, wherein the water stop device is formed as an inclined surface extending obliquely forward and downward from the lower end side.

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