JP2023157496A - Water stop device - Google Patents

Abstract

To raise a water stop height according to the rise in water level.SOLUTION: A water stop device includes a main water stop plate 11 provided so as to cross the flow of water, and an auxiliary water stop plate 12 provided so as to be movable upward with respect to the main water stop plate 11. The auxiliary water stop plate 12 moves upward due to buoyancy to increase a water stop height of the main water stop plate 11.SELECTED DRAWING: Figure 4

Description

The present invention relates to a water stop device that prevents water from entering openings in buildings, underground passages, etc. when water levels rise.

If swollen water from typhoons or torrential rains enters openings in buildings, underground passages, etc., it can cause serious damage. Therefore, in preparation for such a situation, in advance, grooved pillars are erected facing each other on both sides of the openings of buildings, underground passages, etc., and water stop plates are stored near these pillars. It is conventionally known that when water rises, a water stop plate is inserted into the groove of the support column to close the opening and prevent water from entering (see Patent Document 1).
By the way, according to such a conventional technique, the water level becomes higher than the height at which water can be stopped by the water stop plate, and the increased water may climb over the water stop plate. Therefore, in anticipation of such an increase in water, it may be possible to set the water stop plate higher in advance.

Japanese Patent Application Publication No. 2005-2644

However, if the water stop plate is set high in advance, problems may occur, such as evacuees being unable to cross the water stop plate and pass through.

In view of such problems, one aspect of the present invention includes the following configuration.
The main water stop plate is provided to intersect with the flow of water, and the auxiliary water stop plate is provided to be movable upward with respect to the main water stop plate, and the auxiliary water stop plate is moved upward by buoyancy. A water stop device characterized in that the height of the water stop by the main water stop plate is increased.

Since the present invention is configured as described above, the water stop height can be increased in accordance with the rise in the water level.

It is a perspective view which shows the state before an auxiliary water stop plate moves upward about an example of the water stop device based on this invention. It is a perspective view which shows the state after an auxiliary water stop plate has moved upward in the same water stop device. FIG. 2 is a perspective view of the main parts of the same water stop device with the watertight material removed. It is a longitudinal cross-sectional view showing a state in which the auxiliary water stop plate is moving upward due to buoyancy in the same water stop device. It is a perspective view which shows the state before an auxiliary water stop plate moves upward about another example of the water stop device based on this invention. It is a perspective view which shows the state after an auxiliary water stop plate has moved upward in the same water stop device. It is a perspective view which shows the state before an auxiliary water stop plate moves upward about another example of the water stop device based on this invention. It is a perspective view which shows the state after an auxiliary water stop plate has moved upward in the same water stop device. It is a longitudinal cross-sectional view which shows the state after one auxiliary|assistant water stop plate has moved upward about another example of the water stop device based on this invention. It is a longitudinal cross-sectional view which shows the state where the auxiliary|assistant water stop plate is moving upward by buoyancy about another example of the water stop device based on this invention. It is a longitudinal cross-sectional view which shows the state where the auxiliary|assistant water stop plate is moving upward by buoyancy about another example of the water stop device based on this invention. It is a longitudinal cross-sectional view showing another example of the water stop device according to the present invention, (a) shows a state where the auxiliary water stop plate is in the initial position, and (b) shows the initial movement of the auxiliary water stop plate in the upward movement. Indicates a state assisted by a mechanism. It is a longitudinal cross-sectional view showing another example of the water stop device according to the present invention, (a) shows a state where the auxiliary water stop plate is in the initial position, and (b) shows the initial movement of the auxiliary water stop plate in the upward movement. Indicates a state assisted by a mechanism.

Next, embodiments according to the present invention will be described in detail based on the drawings.

<First embodiment>
Next, a specific embodiment having the above characteristics will be described in detail based on the drawings.
The water stop device 1 includes a water stop plate 10 provided to intersect the flow of water, and left and right water stop body supports 20, 20 that support the water stop plate 10 on both sides, and is suitable for openings in buildings, etc. It is installed on an immovable surface such as the floor so as to block the area.
Note that, according to the illustrated example, the one side and the other side are an outdoor side and an indoor side, respectively. In addition, as another example, it is also possible that the one side is the indoor side and the other side is the outdoor side.
Further, according to the illustrated example, the outdoor side is the upstream side of water flow, and the indoor side is the downstream side, but as another example, the water stop plate 10 may be installed in the opposite direction, so that the indoor side is the upstream side and the outdoor side is the downstream side. can be on the downstream side.

The water stop plate 10 faces the main water stop plate 11 extending between the left and right water stop body supports 20, 20, and moves upward (rotates upward according to the illustrated example) due to buoyancy. It includes an auxiliary water stop plate 12 that increases the water stop height.
Further, between the main water stop plate 11 and the auxiliary water stop plate 12, a holding mechanism 35 is provided as necessary to hold the auxiliary water stop plate 12 at a predetermined position so as not to be able to move up and down.

The main water stop plate 11 is a horizontally elongated rectangular plate-like member, and is detachably attached to the water stop body support parts 20, 20 on both sides from the outdoor side (upstream side).
The main water stop plate 11 has a notch 11a on the upper side that is concave in a front view and penetrates in the thickness direction, and has a handheld portion 11b on the upper end.
The main water stop plate 11 is made of a hard material such as a metal material, and has a solid shape or a hollow shape having a water drainage structure.

The notch 11a has a concave shape in front view with an upper opening, and penetrates the main water stop plate 11 in the thickness direction.
A projecting piece 11a1 is provided near the indoor end of the inner surface of the notch 11a so as to protrude toward the space inside the notch 11a.

Watertight materials 31, 32, and 33 are provided on the inner surface of this notch portion 11a so as to be compressed while being sandwiched between the auxiliary water stop plate 12 located at the upper position (water stop position).
These watertight materials 31, 32, and 33 are each formed from an elastic material such as rubber or elastomer resin.

The watertight material 31 is formed into a plate shape that overlaps the left side portion of the inner surface of the notch portion 11a (see FIG. 3).
At the outdoor end of the watertight material 31, a guide slope is provided so as to gradually incline toward the inside of the notch 11a from the outdoor side to the indoor side so as to guide the auxiliary water stop plate 12 into the notch 11a. A surface 31a is formed extending in the vertical direction. This guide inclined surface 31a allows the auxiliary water stop plate 12 to fit smoothly into the notch 11a.
Furthermore, a protrusion 31b is formed at the indoor end of the watertight material 31 in the vertical direction so as to abut the protrusion 11a1 of the notch 11a. When the auxiliary water stop plate 12 is fitted into the notch 11a, the protrusion 31b is compressed between the auxiliary water stop plate 12 and the protrusion 11a1 to make the gap between them watertight. to block.

The watertight material 32 is formed laterally symmetrically with the watertight material 31, and has a guide slope 32a, a protrusion 32b, and the like.

The watertight material 33 is formed into a rectangular flat plate shape that is in contact with the bottom inner surface of the notch portion 11a. In addition, as another example, it is also possible to make this watertight material 33 have the same cross-sectional shape as the watertight materials 31 and 32.
This watertight material 33 is compressed by being sandwiched between the lower end surface of the auxiliary water stop plate 12 and the inner bottom surface of the notch 11a when the auxiliary water stop plate 12 is in the upper position (see FIG. 2). , seal the gap between them watertight.

The auxiliary water stop plate 12 is formed, for example, into a rectangular plate shape from a hollow metal material, a foamed material, or the like, and this auxiliary water stop plate 12 itself has buoyancy to move upward in water.
Other examples of the material of the auxiliary waterstop plate 12 include wood, a synthetic resin material with buoyancy, and other materials with low specific gravity.
This auxiliary water stop plate 12 only needs to have buoyancy as a whole, and may be constructed entirely of a material that easily floats on water, or may be constructed of a material that does not have buoyancy and a material that has buoyancy. It is possible to take a configured form or the like.
Further, a preferable embodiment of the auxiliary waterstop plate 12 may be one having a shape that is susceptible to buoyancy (for example, see FIG. 10).

This auxiliary water stop plate 12 is rotatably supported via a hinge 13 with respect to the main water stop plate 11, and in the initial state where there is no water around it, it is in the lower position with the notch 11a open (see FIG. 1). When there is water in the surrounding area, it moves upward due to buoyancy and reaches the upper position (see FIG. 2) where the notch 11a is watertightly closed.

To be more specific, the auxiliary water stop plate 12 has its opposite end connected to the main water stop plate 11 via one or more hinges 13 so that one end of the auxiliary water stop plate 12 can rotate upward due to buoyancy. It is pivotally supported. According to the illustrated example, the hinge 13 is attached between the outdoor side surfaces of the main water stop plate 11 and the auxiliary water stop plate 12, with the rotation axis aligned along the bottom of the cutout portion 11a.

The holding mechanism 35 may be any mechanism that holds the auxiliary water stop plate 12 at a predetermined position on the vertical movement path so that it cannot move up and down, or releases this holding state by a predetermined operation.
The illustrated holding mechanism 35 includes a magnet 35a fixed to the main water stop plate 11, and a magnetic member 35b fixed to the auxiliary water stop plate 12 so as to be attracted to the magnet 35a. This holding mechanism 35 is such that when the auxiliary water stop plate 12 is fitted into the notch 11a, the magnet 35a attracts the magnetic member 35b by magnetic force, and the auxiliary water stop plate 12 is moved in the opposite direction by manual operation or the like. to release the adsorption.
Note that the predetermined operation for canceling the holding state may be a manual release operation as described above, but as another preferable example, it may also be an automatic release using increased water. be.

Next, the characteristic functions and effects of the water stop device 1 having the above structure will be explained in detail.
In the initial state where there is no water on the outdoor side, as shown in FIG. 1, the auxiliary water stop plate 12 is in the lower position and the notch 11a is open.
Therefore, in this initial state, the water stop height H1 by the water stop plate 10 is the maximum height of the main water stop plate 11 minus the height of the notch portion 11a.
The cutout portion 11a can be used for a person to step over.

When the water rises on the outdoor side, the auxiliary water stop plate 12 floats on the increasing water that tries to overcome the main water stop plate 11 at the cutout portion 11a. Therefore, the auxiliary waterstop plate 12 rotates upward about the hinge 13 and gradually fits between the watertight materials 31, 31, 32 from the bottom to the top (Fig. 4 reference). During this rotation, the lower part of the auxiliary waterstop plate 12 partially fits between the watertight members 31, 31, 32, thereby preventing water from passing through.

Then, the auxiliary water stop plate 12 is in the upper position (closed state shown in FIG. 2) where the entire notch 11a is closed watertightly. In particular, when the holding mechanism 35 is provided (see FIG. 1), the auxiliary water stop plate 12 can be smoothly brought into the closed state by the magnetic force of the holding mechanism 35, and this closed state can be stably maintained. can do.
In the upper position (closed state), the water stop height H2 at which water can be stopped by the entire water stop plate 10 is approximately the same as the maximum height of the main water stop plate 11 (see FIG. 2).

In this way, according to the water cutoff device 1, the water cutoff height can be gradually increased as the water level rises.

<Second embodiment>
Next, other embodiments according to the present invention will be described. In addition, since the embodiment shown below is one in which a part is changed from the water stop device 1 mentioned above, the changed part will mainly be explained in detail, and overlapping detailed explanation will be omitted.

The water stop device 2 shown in FIG. 5 and FIG. 11', an auxiliary water stop plate 14, left and right rails 15, 15, and a watertight material 34 have been replaced.

According to the illustrated example, the main water stop plate 11' is the same as the main water stop plate 11 without the projecting portion 11a1. Note that it is also possible to use the main water stop plate 11 as it is as the main water stop plate 11'.

The auxiliary water stop plate 14, like the auxiliary water stop plate 12 described above, is formed into a rectangular plate shape from a hollow metal material, foamed material, or the like, and has buoyancy.
Other examples of the material of the auxiliary water stop plate 14 include materials with low specific gravity, such as wood and synthetic resin materials having buoyancy.
This auxiliary water stop plate 14 only needs to have buoyancy as a whole, and may be constructed entirely of a material that easily floats on water, or may be constructed of a material that does not have buoyancy and a material that has buoyancy. It is possible to take a configured form or the like.
In addition, a preferable embodiment of the auxiliary water stop plate 14 may be one having a shape that is susceptible to buoyancy (for example, see FIG. 11).

This auxiliary water stop plate 14 has a size that overlaps the watertight material 34 so as to cover the cutout portion 11a from the outdoor side.

The left and right rails 15, 15 are fixed to the outdoor side surface of the main water stop plate 11 with the cutout 11a placed therebetween.
Each rail 15 guides the auxiliary water stop plate 14 in the vertical direction on both left and right sides, and according to the illustrated example, has a substantially L-shaped cross section that loosely fits into the left end or right end of the auxiliary water stop plate 14. are continuous in the vertical direction.
Furthermore, a locking portion (not shown) is provided on the lower end side of each rail 15 to hold the auxiliary water stop plate 14 at a predetermined lower position (lower limit position illustrated in FIG. 5).

The watertight material 34 is formed from an elastic material such as rubber or elastomer resin into an appropriate shape such as a flat plate. According to the illustrated example, the watertight material 34 is adhesively fixed to the outdoor side surface of the main water stop plate 11' in a concave shape in plan view along the notch 11a.
In addition, as another example, a watertight material similar to that described above may be provided on the indoor side surface of the auxiliary water stop plate 14.

Therefore, according to the water stop device 2 having the above configuration, in the initial state where there is no water outdoors, the auxiliary water stop plate 12 is in the lower position, the notch 11a is open, and the water stop height by the water stop plate 10 is lowered. The height H1 is a dimension obtained by subtracting the height of the notch portion 11a from the maximum height of the main water stop plate 11'. In this initial state, people, etc. can pass by straddling the notch 11a.

When the water rises on the outdoor side, the auxiliary water stop plate 14 slides upward due to buoyancy, and assumes the upper position where the notch 11a is watertightly closed (see FIG. 6).
In this upper position, the water stop height H2 by the water stop plate 10 is approximately the same as the maximum height of the main water stop plate 11'.

In this way, according to the water cutoff device 2, the water cutoff height can be automatically increased as the water level rises. Furthermore, according to this water stop device 2, when the water level falls, the auxiliary water stop plate 12 is lowered by its own weight, so that the water stop height can be automatically lowered.

<Third embodiment>
The water stop device 3 shown in FIGS. 7 and 8 is the same as the water stop device 1 in which the water stop plate 10 is replaced with a water stop plate 40.

The water stop plate 40 has a main water stop plate 41 provided so as to intersect with the flow of water, and a water stop plate 40 that moves upward (rotates upward according to the illustrated example) due to buoyancy relative to the main water stop plate 41 to increase the water stop height. It also includes an auxiliary water stop plate 42 that increases the height.

The main water stop plate 41 is a horizontally elongated rectangular plate-like member, and is detachably attached to the lower half side of the water stop body supports 20, 20 on both sides from the outdoor side.
The upper end portion of this main water stop plate 41 is a substantially horizontal surface with no unevenness. A watertight material 41a is continuously provided on this surface over substantially the entire length in the width direction. The watertight material 41a is sandwiched between the auxiliary waterstop plate 42 and the main waterstop plate 41 to maintain watertightness when the auxiliary waterstop plate 42 rotates upward.

The auxiliary water stop plate 42 is formed of, for example, a hollow metal material, a foamed material, or the like into a rectangular plate shape having a width dimension that is approximately the same as the total length in the lateral direction of the main water stop plate 41, and has buoyancy.
Other examples of the material of the auxiliary waterstop plate 42 include wood, a synthetic resin material with buoyancy, and other materials with low specific gravity.
This auxiliary water stop plate 42 only needs to have buoyancy as a whole, and may be constructed entirely of a material that easily floats on water, or may be constructed of a material that does not have buoyancy and a material that has buoyancy. It is possible to take a configured form or the like.
Further, a preferable embodiment of the auxiliary water stop plate 42 may be one having a shape that is susceptible to buoyancy.

The auxiliary water stop plate 42 extends from a lower position below the upper end of the main water stop plate 41 (see FIG. 7) to an upper position protruding above the upper end of the main water stop plate 41 (see FIG. 8). It is supported by the main water stop plate 41 via a plurality of hinges 13 so as to rotate upward.

Therefore, according to the water stop device 3 having the above configuration, in the initial state where there is no water outdoors, the auxiliary water stop plate 42 is located below the upper end of the main water stop plate 41, and the water stop height H1 is , the height from the lower end to the upper end of the main water stop plate 11 (see FIG. 7).

Further, when the water level increases on the outdoor side, the auxiliary water stop plate 42 rotates upward due to buoyancy and closes the space above the main water stop plate 41. Therefore, the water stop height H2 is the height from the lower end of the main water stop plate 11 to the upper end of the auxiliary water stop plate 42 located at the upper position (see FIG. 8).

That is, the water cutoff device 3 having the above structure can also automatically increase the water cutoff height as the water level rises.

In addition, as another example of the water stop device 3, it is possible to provide the auxiliary water stop plate 42 so as to slide in the vertical direction similarly to the water stop device 2 (see FIGS. 5 and 6). In this case, the water stop height can be automatically changed according to the rise and fall of the water level.

<Fourth embodiment>
In addition, the water stop device 4 shown in FIG. 9 is provided with an auxiliary water stop plate 14, a rail 15, a watertight material 34, etc. on both the front side and the back side of the main water stop plate 11' in the water stop device 2 described above. It is something that
The main water stop plate 11' in this water stop device 4 is configured so that it can be attached to the water stop body support portion 20 on either the front side or the back side thereof.

Therefore, according to the water stop device 4 having the above configuration, in the work of attaching the water stop plate 10 to the water stop body support part 20, there is no need for the operator etc. to be conscious of the attachment surface to the water stop body support part 20, and the operator etc. Good workability.
When the water increases outdoors or indoors, the auxiliary water stop plate 14 on the upstream side where the water has increased can be automatically raised and lowered.

<Fifth embodiment>
A water stop device 5 shown in FIG. 10 is the water stop device 1 described above, in which a floating portion 12a is added to the auxiliary water stop plate 12 having the above configuration.
The floating portion 12a protrudes from the surface of the auxiliary water stop plate 12 on the tip side of the auxiliary water stop plate 12, and extends from the surface of the auxiliary water stop plate 12 in a manner that increases the buoyancy force received at the initial stage of upward rotation of the auxiliary water stop plate 12. Increases surface area and volume.
The floating portion 12a is preferably formed from a material having greater buoyancy than the auxiliary water stop plate 12, but it can also be integrally formed from the same material as the auxiliary water stop plate 12.
According to an example shown in FIG. 10, the shape of the floating portion 12a is a horizontally oriented square column extending in the width direction of the auxiliary water stop plate 12. This shape can be a floating portion 14a (see FIG. 11), which will be described later, or other shapes.

Therefore, according to the water stop device 5 shown in FIG. 10, the auxiliary water stop plate 12 can be rotated upward more smoothly by the buoyancy of the floating portion 12a.

<Sixth embodiment>
The water stop device 6 shown in FIG. 11 is the water stop device 2 described above, in which a floating portion 14a is added to the auxiliary water stop plate 14 having the above configuration.
The floating portion 14a protrudes from the surface of the auxiliary water stop plate 14 at the lower end side of the auxiliary water stop plate 14 and increases the surface area and volume of the portion that comes into contact with water so as to increase the buoyancy force received by the auxiliary water stop plate 14. There is.
The floating portion 14a is preferably formed from a material having greater buoyancy than the auxiliary water stop plate 14, but it can also be integrally formed of the same material as the auxiliary water stop plate 14.
According to an example shown in FIG. 11, the shape of the floating portion 14a is a horizontal triangular prism shape spanning the width direction of the auxiliary water stop plate 14. This shape can be the above-mentioned floating portion 12a (see FIG. 10) or other shapes.

Therefore, according to the water stop device 6 shown in FIG. 11, the auxiliary water stop plate 14 can be slid upward more smoothly by the buoyancy of the floating portion 14a.

<Seventh embodiment>
The water stop device 7 shown in FIGS. 12(a) and 12(b) is the same as the water stop device 1 described above, but is provided with an assist mechanism 50 that assists the initial upward movement of the auxiliary water stop plate 12.
The assist mechanism 50 includes a plate-shaped piece 51 extending upwardly between the main water stop plate 11 and the auxiliary water stop plate 12, and a plate-shaped piece 51 extending downward and diagonally upstream from the lower end of the piece 51. The cross section of the water stop plate 51 and the other long plate-like part 52 is integral with each other, and the boundary between the one part 51 and the other part 52 is rotatably supported with respect to the water stop plate 10. Ru.

According to this water stop device 7, when there is no water, one piece 51 is located between the lower end side of the auxiliary water stop plate 12 and the main water stop plate 11, and the other piece 52 is positioned downward. It slopes diagonally upstream.
When water due to increased water flows toward the water stop plate 10, the other piece 52 is pushed by the water flow and rotates downstream, and the one piece 51 rotates upstream.
Therefore, the auxiliary water stop plate 12 is pushed by the piece 51 and rotates slightly upward, tilting the lower end side toward the upstream side. Therefore, when the water level rises further and reaches the lower end of the auxiliary water stop plate 12, the auxiliary water stop plate 12 smoothly rotates upward due to buoyancy.

Therefore, according to the water stop device 7 shown in FIG. 12, the initial movement of the auxiliary water stop plate 12 can be made smooth.

<Eighth embodiment>
The water stop device 8 shown in FIGS. 13(a) and 13(b) is the same as the water stop device 1 described above, but is provided with an assist mechanism 60 that assists the initial upward movement of the auxiliary water stop plate 12.
The assist mechanism 60 includes a vertically groove-shaped guide section 61 formed on the main water stop plate 11 and a floating member 62 that can rise along the guide section 61.
The material, surface area, volume, shape, etc. of the floating member 62 are appropriately adjusted so that the buoyancy is greater than that of the auxiliary water stop plate 12. The upper end of the floating member 62 is formed into a generally wedge-shaped longitudinal section so as to fit between the lower end of the auxiliary water stop plate 12 and the main water stop plate 11 .

According to this water stop device 8, when there is no water, the floating member 62 is located below the auxiliary water stop plate 12 and above the floor surface or the like.
When the water level of the surrounding water rises, the floating member 62 floats on this water, and the wedge-shaped portion on the upper end side of the floating member 62 enters between the auxiliary water stop plate 12 and the main water stop plate 11, and the slope of the wedge-shaped portion increases. The auxiliary water stop plate 12 is pushed upstream by the surface.
For this reason, the auxiliary waterstop plate 12 rotates slightly upward and tilts its lower end toward the upstream side. Then, when the water level rises further and reaches the lower end of the auxiliary water stop plate 12, the auxiliary water stop plate 12 smoothly rotates upward due to buoyancy.

Therefore, the water stop device 8 shown in FIG. 13 can also make the initial movement of the auxiliary water stop plate 12 smooth.

<Other variations>
In the above embodiment, as an example, the holding mechanism 35 (see FIG. 1) holds the auxiliary water stop plate 12 at the upper position (water stop position). The plate may be held at the lower position, the auxiliary water stop plate may be held at the upper position and the lower position, the auxiliary water stop plate may be held at an intermediate position in the vertical movement direction, etc. It is also possible.
By holding the auxiliary water stop plate in a predetermined position in this way, it is possible to prevent problems caused by slight movement or rattling of the auxiliary water stop plate during use or transportation. I can do it.

Further, in the embodiment described above, the holding mechanism 35 is constituted by the magnet 35a and the magnetic member 35b, but as another example of this holding mechanism, the auxiliary water stop plate 12 itself is formed from a magnetic material and is magnetically attached to the magnet 35a. You can do it like this.
Furthermore, other examples of the holding mechanism may include a locking/disengaging mechanism called a roller catcher or the like, or other engaging structures or fitting structures.

Further, according to the above embodiment, the auxiliary water stop plate is moved upward by rotation or sliding, but in another example, the auxiliary water stop plate is moved upward by both rotation and sliding. It is also possible to move it. Specifically, the auxiliary water stop plate slides upward due to buoyancy and then rotates to the upper position (water stop position), and the auxiliary water stop plate rotates upward due to buoyancy and then slides. It is possible to adopt a mode in which the auxiliary water stop plate moves to the upper position, or a mode in which the auxiliary water stop plate rotates while sliding upward due to buoyancy and moves to the upper position.

Further, according to the water stop devices 1 and 2, the main water stop plate 11 is provided with a single notch 11a, but as another example, a plurality of notches 11a are provided on the main water stop plate 11 at intervals in the width direction. It is also possible to provide a cutout.
In this case, the plurality of notches may be closed together by a single horizontally long auxiliary waterstop, or the plurality of notches may be closed individually by a plurality of auxiliary waterstops. You can also do this.

Further, according to the above embodiment, the single notch is closed by a single auxiliary water stop plate, but in another example, the single notch is closed by a plurality of auxiliary water stop plates arranged in the width direction. It is also possible to close it with a board.

Further, according to the above-mentioned water stop device 4, the auxiliary water stop plate 14 that slides upward is provided on both the front side and the back side. It is also possible to provide the plate 12 on both the front side and the back side. In this case, the auxiliary water stop plates 12, 12 on the front side and the back side may be fitted into one half side and the other half side in the thickness direction within the notch, respectively.

In addition, when the auxiliary water stop plates are provided on both the front and back sides of the main water stop plate, both of the auxiliary water stop plates must be of the same type (for example, both are slide types, or both are rotatable. They may be of different types (for example, one side is a sliding type and the other side is a rotating type).

Further, according to the above embodiment, the auxiliary water stop plate is configured to automatically move upward due to buoyancy, etc., but the auxiliary water stop plate does not need to wait for the auxiliary water stop plate to automatically move upward due to buoyancy or the like. , it is possible to increase the water stop height in advance by manually moving it upward.

Further, according to the above embodiment, the auxiliary water stop plate is moved upward only by buoyancy, but in another preferred embodiment, the auxiliary water stop plate is moved upwardly by buoyancy. A biasing mechanism for biasing the water plate upward may be provided.
This biasing mechanism may be achieved by, for example, adding a torsion spring to the hinge 13 of the above-mentioned rotary type water stop devices 1, 3, 5, 7, and 8 to bias the auxiliary water stop plate upward. . That is, the hinge 13 may be replaced with a spring-loaded hinge or the like.
Further, in the slide type water stop devices 2, 4, and 6 described above, the auxiliary water stop plate may be urged upward by, for example, a compression spring or a tension spring.
Further, the biasing mechanism may be configured by a spring having a configuration other than the above, a hydraulic mechanism, a pneumatic mechanism, an electric mechanism, or the like.
According to the water stop device with the urging mechanism added, the auxiliary water stop plate can be automatically moved upward in a short time by the buoyancy and the urging force of the urging mechanism, and the notch 11a can be closed. .

Further, the present invention is not limited to the specific configuration described above, and can be modified as appropriate without changing the gist of the present invention.

<Summary>
As described above, the following inventions are disclosed in the above embodiments.
(1) A main water stop plate provided so as to intersect with the flow of water, and an auxiliary water stop plate provided so as to be movable upward with respect to the main water stop plate, wherein the auxiliary water stop plate A water stop device (see FIGS. 1 to 8), characterized in that the main water stop plate moves upward to increase the water stop height.
Here, the water stop height means a height that can prevent water from flowing over the main water stop plate and the auxiliary water stop plate. This water stop height is higher in a state after the auxiliary water stop plate has moved upward than in a state before the auxiliary water stop plate has moved upward.
(2) The water stop device according to (1), wherein the auxiliary water stop plate is provided so as to rotate upward due to buoyancy (see FIGS. 1 to 4 and 7 to 8). ).
(3) The water stop device according to (1) or (2), wherein the auxiliary water stop plate is provided to slide upward due to buoyancy (FIGS. 5, 6, and 9). .
(4) The main water stop plate is provided with a through-shaped notch that is open at the top,
The water stop device according to any one of (1) to (3), wherein the auxiliary water stop plate moves upward from a lower position where the cutout is open to an upper position where the cutout is closed. (See Figures 1 to 6).
(5) The auxiliary water stop plate is provided over the entire length of the main water stop plate in the width direction, and extends from a lower position below the upper end of the main water stop plate to above the upper end of the main water stop plate. The water stop device according to any one of (1) to (3), characterized in that it moves upward to a protruding upper position (see FIGS. 7 and 8).
(6) The stop according to any one of claims (1) to (5), wherein the auxiliary water stop plate is provided on both the front side and the back side of the main water stop plate. Water device (see Figure 9).
(7) The water stop device according to any one of (1) to (6), further comprising a holding mechanism that holds the auxiliary water stop plate at a predetermined position so as to be immovable up and down.
(8) Claims (1) to (7) characterized in that a biasing mechanism is provided that urges the auxiliary water stop plate upward by assisting the upward movement of the auxiliary water stop plate due to buoyancy. ) The water stop device described in any of the above.
(9) The water stop device according to any one of (1) to (8), further comprising an assist mechanism that assists the initial upward movement of the auxiliary water stop plate.

1, 2, 3, 4, 5, 6, 7, 8: Water stop device 10, 40: Water stop plate 11, 11', 41: Main water stop plate 12, 14, 42: Auxiliary water stop plate 12a, 14a : Floating part 13: Hinge 20: Water stop body support part 31, 32, 33, 34: Watertight material 50, 60: Assist mechanism H1, H2: Water stop height

Claims (9)

A main water stop plate installed to intersect the flow of water;
and an auxiliary water stop plate that is movable upward with respect to the main water stop plate,
A water stop device characterized in that the auxiliary water stop plate moves upward due to buoyancy to increase the water stop height of the main water stop plate. The water stop device according to claim 1, wherein the auxiliary water stop plate is provided so as to rotate upward due to buoyancy. The water stop device according to claim 1, wherein the auxiliary water stop plate is provided so as to slide upward due to buoyancy. The main water stop plate is provided with a through-shaped notch that is open at the top,
2. The water stop device according to claim 1, wherein the auxiliary water stop plate moves upward from a lower position where the cutout is open to an upper position where the cutout is closed. The auxiliary water stop plate is provided over the entire length of the main water stop plate in the width direction, and has an upper side that projects upward from the upper end of the main water stop plate from a lower position that is below the upper end of the main water stop plate. 2. The water stop device according to claim 1, wherein the water cutoff device moves upward to a fixed position. The water stop device according to claim 1, wherein the auxiliary water stop plate is provided on both the front side and the back side of the main water stop plate. 2. The water stop device according to claim 1, further comprising a holding mechanism that holds the auxiliary water stop plate at a predetermined position so as to be immovable up and down. 2. The water stop device according to claim 1, further comprising a biasing mechanism that urges the auxiliary water stop plate upward by assisting upward movement of the auxiliary water stop plate due to buoyancy. 9. The water stop device according to claim 1, further comprising an assist mechanism for assisting the initial upward movement of the auxiliary water stop plate.

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