JP6967461B2 - Water-stop structure - Google Patents

Description

The present invention relates to a water-stopping structure and to a water-stopping structure using a drainage groove lid.

Conventionally, in the event of flood damage such as heavy rain, tsunami, and flooding of rivers, water such as flooded water from the outside enters the inside of the structure (indoor) through the opening of the structure. A waterproof structure is provided at the opening. For example, a flexible waterproof sheet is provided on the back surface of the shutter as an opening / closing body, and a sealing member is provided on the guide member that guides the widthwise end of the shutter so as to face the waterproof sheet. There is a shutter device (Patent Document 1). In such a shutter device, when water pressure such as flood water acts on the surface of the shutter, the waterproof sheet is pressed against the sealing member and functions as a waterproof structure.

Japanese Patent No. 4459740

The waterproof structure as described above requires an opening / closing body that closes openings such as shutters and doors. Therefore, it cannot be used for an opening without an opening / closing body. Further, it is required to suppress the infiltration of water from the outdoor side to the indoor side, not limited to the opening.

The present invention has been made in view of the above, and an object of the present invention is to provide a waterproof structure capable of suppressing the intrusion of water from the outdoor side to the indoor side.

In order to solve the above-mentioned problems and achieve the object, the present invention has a water stop structure using a drainage ditch lid covering a drainage ditch formed on a floor surface, and the drainage ditch lid is used as the drainage ditch. On the other hand, the holding means for holding the drainage groove lid in an upright position and a waterproof waterproof sheet attached to the outdoor side of the drainage groove lid in the upright state are provided, and the waterproof sheet is the drainage groove lid in the upright state. covers at least a portion of the outdoor side, and extend to the surface to be continuous with the drainage ditch lid and bottom of the upright, the retaining means standing state indoor side the drainage ditch lid relative to the drainage ditch The waterproof sheet extends to the indoor side surface of the drainage ditch and to the bottom surface of the drainage ditch, and is placed on the portion of the waterproof sheet facing the bottom surface. It is characterized by having a weight.

Further, in the water blocking structure, the holding means may be a holding tool that is fixed to the floor surface on the indoor side of the standing drainage ditch lid and regulates the movement of the standing drainage ditch lid. preferable.

Further, in the water blocking structure, it is preferable that the holding means includes an insertion groove formed in at least the drainage groove or the floor and into which one end of the drainage groove lid in the indoor / outdoor direction is inserted.

Further, in the water-stopping structure, the holding means includes a rotation mechanism that rotates the drainage groove lid between an inverted state and an upright state that covers the drainage groove, a back surface side of the drainage groove lid, and the back surface side of the drainage groove lid. Of the drainage grooves, the drainage groove is provided between the side where the drainage groove lid stands up and the side opposite to the upright side, is housed in the drainage groove in the inverted state, and is housed in the drainage groove in the upright state. It is preferable to include a rotation restricting mechanism for restricting the rotation of the lid. Further, in the water stop structure, it is preferable that a drain hole formed in the drain groove and a sewer pipe connected to the drain hole are further provided, and a check valve is formed in the sewer pipe. Further, in the water blocking structure, a drainage hole formed in the drainage ditch and a sewer pipe connected to the drainage hole are further provided, and the drainage hole and the sewer pipe are formed on the side surface on the outdoor side. It is preferable to be done.

Since the outdoor side of the drainage ditch lid whose standing state is maintained by the holding means is covered with a waterproof sheet, it is possible to prevent water from entering from the outdoor side to the indoor side from the drainage ditch lid, and water going from the outdoor side to the indoor side. It has the effect of suppressing infiltration.

FIG. 1 is a plan view showing a schematic configuration example of the waterproof structure according to the first embodiment. FIG. 2 is a plan view showing a drainage ditch lid installed on the floor surface according to the first embodiment. FIG. 3 is a cross-sectional view showing a drainage groove lid in an inverted state. FIG. 4 is a partial plan view showing the drainage groove lid in the collapsed state. FIG. 5 is a cross-sectional view showing a configuration example of the waterproof structure according to the first embodiment. FIG. 6 is a partial plan view showing a configuration example of the waterproof structure according to the first embodiment. FIG. 7 is a cross-sectional view showing the drainage groove lid in the collapsed state according to the second embodiment. FIG. 8 is a cross-sectional view showing a configuration example of the waterproof structure according to the second embodiment. FIG. 9 is a cross-sectional view showing the drainage groove lid in the collapsed state according to the third embodiment. FIG. 10 is a cross-sectional view showing a configuration example of the waterproof structure according to the third embodiment. FIG. 11 is a cross-sectional view showing a configuration example of the waterproof structure according to the fourth embodiment. FIG. 12 is a plan view showing a drainage ditch lid installed on the floor surface according to the fifth embodiment. FIG. 13 is a plan view showing a schematic configuration example of the waterproof structure according to the fifth embodiment. FIG. 14 is a plan view showing a drainage ditch lid installed on the floor surface according to the sixth embodiment. FIG. 15 is a plan view showing a schematic configuration example of the waterproof structure according to the sixth embodiment.

Hereinafter, embodiments of the waterproof structure according to the present invention will be described in detail with reference to the drawings. The present invention is not limited to this embodiment. In addition, the components in the following embodiments include those easily conceivable by those skilled in the art or substantially the same.

[Embodiment 1]
First, the waterproof structure according to the first embodiment will be described. FIG. 1 is a plan view showing a schematic configuration example of the waterproof structure according to the first embodiment. FIG. 2 is a plan view showing a drainage ditch lid installed on the floor surface according to the first embodiment. FIG. 3 is a cross-sectional view showing a drainage groove lid in an inverted state. FIG. 4 is a partial plan view showing the drainage groove lid in the collapsed state. FIG. 5 is a cross-sectional view showing a configuration example of the waterproof structure according to the first embodiment. FIG. 6 is a partial plan view showing a configuration example of the waterproof structure according to the first embodiment. 3 is a sectional view taken along the line AA of FIG. 4, and FIG. 5 is a sectional view taken along the line BB of FIG.

As shown in FIG. 1, the water blocking structure 1-1 according to the present embodiment is a structure using a drainage groove lid 2. As shown in FIG. 2, the drainage ditch lid 2 covers the drainage ditch 110. In the present embodiment, the drainage ditch 110 is formed in the opening 210 provided in the building 200, and the length thereof is the width L of the opening 210. The opening 210 is composed of wall members 201 and 202 and a ceiling (not shown), and is an entrance / exit of a parking lot provided inside the building 200, an entrance / exit without a shutter and a door, and the inside of the building 200. On the indoor side, the outside of the building 200 is the outdoor side. The water stop structure 1-1 suppresses water such as flood water from the outside of the building 200 from entering the inside of the building 200.

As shown in FIG. 3, the drainage ditch 110 is formed by embedding a U-shaped, for example, a concrete block 120 in the floor surface 100 when viewed from the longitudinal direction (direction in which water flows). There is. The block 120 is formed with stepped portions 121 and 122 inside, and drainage is performed by contacting the stepped portions 121 and 122 with the end portions 22 and 23 in the lateral direction (indoor / outdoor direction) of the drainage ditch lid 2. The groove lid 2 is installed on the floor surface 100. The drainage ditch lid 2 is installed on the floor surface 100, that is, the state in which the ends 22 and 23 are in contact with the stepped portions 121 and 122 is referred to as an inverted state of the drainage ditch lid 2.

As shown in FIG. 1, a plurality of blocks 120 are continuously embedded according to the length of the drainage ditch 110 with respect to the floor surface 100. Adjacent blocks 120 are in contact with or in close proximity to their longitudinal ends. Further, as shown in FIG. 3, a drainage hole 123 is formed in the block 120. In the present embodiment, the drainage hole 123 is formed on the bottom surface 110a of the drainage ditch 110, is connected to the sewer pipe 130, and drains the water flowing into the drainage ditch 110 to the outside.

As shown in FIG. 1, the waterproof structure 1-1 includes a drainage groove lid 2, a holder 3, a waterproof sheet 4, and a weight 5.

As shown in FIGS. 3 and 4, the drainage ditch lid 2 is installed on the floor surface 100 by covering the drainage ditch 110 formed on the floor surface 100. The drainage ditch lid 2 is made of metal or resin, and a plurality of through holes 21 penetrating the front surface 2a exposed to the floor surface 100 side in the inverted state and the back surface 2b exposed to the drainage ditch 110 side are formed. There is. As shown in FIG. 3, when the drainage ditch lid 2 is placed in an inverted state and installed on the floor surface 100, the through hole 21 communicates the floor surface 100 with the drainage ditch 110. Therefore, the water W1 that has flowed from the outdoor side of the building 200 toward the indoor side through the opening 210 flows into the drainage ditch 110 through the through hole 21, and goes out through the drainage hole 123 and the sewer pipe 130. It is drained. The drainage groove lid 2 has a rectangular surface 2a, and in the present embodiment, the drainage groove lid 2 is formed in a rectangular shape as shown in FIG. Here, the length of the drainage groove lid 2 in the lateral direction, that is, the width of the drainage groove lid 2 is set so that the drainage groove lid 2 can be inserted into the drainage groove 110 and the end portions 22 and 23 come into contact with the step portions 121 and 122. ing. The drainage groove lid 2 is usually paired with the block 120, and the length in the longitudinal direction, that is, the length of the drainage groove lid 2 is set to the length in the longitudinal direction of the drainage groove 110 of the block 120. There is. A fastening hole 100a for fixing the holder 3 is formed on the indoor side of the floor surface 100 with respect to the drainage ditch 110. The fastening hole 100a is closed with, for example, a rubber cap 140 when the waterproof structure 1-1 is not used.

The holder 3 is a holding means in the present embodiment, and regulates the movement of the drainage ditch lid 2 in an upright state, that is, holds the drainage ditch lid 2 in an upright state with respect to the drainage ditch 110. As shown in FIG. 5, at least one is provided for one drainage ditch lid 2, and two are provided in this embodiment. In the present embodiment, the holder 3 is installed on the indoor side of the floor surface 100 with respect to the drainage ditch 110, and stands upright with the drainage ditch lid 2 on the indoor side and the end portion 23 in contact with the step portion 122. It is to be held in an upright position. The holder 3 is composed of a main body portion 31, a holding portion 32, and a fixing portion 33.

The main body 31 is composed of a fixing member 31a, a holding member 31b, and a support member 31c. The fixing member 31a is formed with a hole (not shown), and the holding tool 3 is fixed to the floor surface 100 by inserting and fastening the fixing portion 33 into the fastening hole 100a through the hole. The fixing member 31a is formed in a U shape, and an insertion pin 31d is inserted and fixed to one end thereof. The fixing member 31a is rotatably supported with respect to the holding member 31b by a support pin 31e at the other end. The holding member 31b is formed in a U-shape, and is formed so that the fixing member 31a can be accommodated inside when the fixing member 31a is rotated by the support pin 31e. The holding member 31b is rotatably supported with respect to the support member 31c by the support pin 31f at the end opposite to the end on which the support pin 31e is formed. The support member 31c regulates the rotation of the holding member 31b with respect to the fixing member 31a. The support member 31c is formed in a U-shape, and is formed so that the holding member 31b can be accommodated inside together with the fixing member 31a when the holding member 31b is rotated by the support pin 31f. The support member 31c is formed with a notch 31g into which the insertion pin 31d is inserted at the end opposite to the end on which the support pin 31f is formed. That is, the main body portion 31 can maintain a triangular shape by inserting the notch 31g into the insertion pin 31d. Further, since the fixing member 31a can be accommodated in the holding member 31b and the holding member 31b can be accommodated in the support member 31c, the main body portion 31 can be folded when the waterproof structure 1-1 is not used, and the storage space can be accommodated. Space can be saved.

In the present embodiment, the holding portion 32 projects toward the drainage ditch lid 2 in an upright state on the side where the support pin 31f of the holding member 31b is provided, that is, on the upper side of the main body portion 31, and the tip portion 32a is on the lower side. It is formed so as to protrude (on the drainage ditch 110 side). That is, the holding portion 32 is formed in an L shape when the holding tool 3 is viewed from the width direction (axial direction of each pin). The holding portion 32 restricts the drainage groove lid 2 from lying down by sandwiching the drainage groove lid 2 in an upright state between the drainage groove lid 2 and the holding member 31b.

The fixing portion 33 fixes the holder 3 to the floor surface 100. The fixing portion 33 is, for example, a hand tightening screw, a knob bolt, a wing bolt, or the like, which can be fastened to a fastening hole 100a, for example, a screw hole by an operator without using a tool. It is preferable to have two or more fixing portions 33 (two in the figure) in order to surely restrict the holding tool 3 from moving with respect to the floor surface 100.

As shown in FIG. 1, the waterproof sheet 4 is attached to the outdoor side of the drainage groove lid 2 in an upright state. The waterproof sheet 4 is made of a resin material or the like that is waterproof, that is, does not allow liquids to pass through and has flexibility. The waterproof sheet 4 is composed of one sheet. The width of the waterproof sheet 4 (the length in the longitudinal direction of the waterproof sheet 4) is at least longer than the width L of the opening 210, and as shown in FIG. 6, the ends 43 and 44 form the opening 210. It is formed to have a length of contact with the members 201 and 202, respectively. Further, as shown in FIG. 5, the height of the waterproof sheet 4 (the length of the waterproof sheet 4 in the lateral direction) covers at least a part of the outdoor side of the drainage groove lid 2 in the upright state and is in the upright state. A surface continuous with the drainage groove lid 2 on the lower side, in this embodiment, at least a part of the side surface 110b on the indoor side of the drainage groove 110 and the bottom surface 110a continuous with the side surface 110b (the weight 5 described later is mounted only on the waterproof sheet 4). It is formed to a length that covers (to the extent that it can be placed). As shown in FIG. 5, the waterproof sheet 4 includes a main body portion 41, a bottom portion 42, and end portions 43 and 44.

In the present embodiment, the main body 41 covers the entire surface of the drainage ditch lid 2 in the upright state on the outdoor side and the entire surface of the side surface 110b on the indoor side of the drainage ditch 110. The main body 41 is in close contact with the drainage groove lid 2 and the side surface 110b due to the water pressure of the water flowing into the drainage groove 110 and the water above the floor surface 100. The main body 41 closes the through hole 21 of the drainage groove lid 2 from the outdoor side to prevent water from entering from the outdoor side to the indoor side through the through hole 21 of the drainage groove lid 2. The main body 41 closes the boundary between the upright drainage groove lid 2 and the side surface 110b, that is, the block 120 from the outdoor side, so that water can flow from the outdoor side through the gap between the drainage groove lid 2 and the drainage groove 110. Prevent intrusion into the indoor side. Here, the method of fixing the main body portion 41 to the drainage ditch lid 2 is not particularly limited as long as the main body portion 41 can be attached to and detached from the drainage ditch lid 2. For example, the waterproof sheet 4 is hooked, attached, or hung on the upper side of the drainage groove lid 2, that is, the end portion 22 with a pinch (clip), an adhesive material, a hook, a string, or the like.

In the present embodiment, the bottom portion 42 covers a part of the bottom surface 110a of the drainage ditch 110. The bottom portion 42 is continuously formed with the main body portion 41, and the water flowing into the drainage groove 110 is brought into close contact with the bottom surface 110a due to the water pressure caused by the water flowing into the drainage groove 110, so that the water flowing into the drainage groove 110 becomes the main body portion 41 and the side surface 110b. Prevent intrusion in between. The bottom portion 42 is preferably installed so as to avoid the drainage hole 123. The bottom portion 42 in the present embodiment covers the bottom surface 110a on the indoor side of the drainage hole 123.

In the present embodiment, the ends 43 and 44 form a part of the wall members 201 and 202 and a part of the side surfaces 110c and 110d of the drainage groove 110 continuous with the wall members 201 and 202, respectively. It covers. The end portions 43 and 44 are continuously formed with the main body portion 41 and the bottom portion 42, respectively, and the wall members 201, 202 and the side surfaces are formed by the water pressure of the water flowing into the drainage groove 110 and the water above the floor surface 100. By being in close contact with the 110c and 110d, the water flowing into the drainage ditch 110 and the water above the floor surface 100 enter between the end portions 43 and 44 and the wall members 201 and 202 and the side surfaces 110c and 110d. To prevent that. Here, the method of fixing the end portions 43, 44 to the wall members 201, 202 and the drainage groove 110 can suppress the formation of a gap between the end portions 43, 44 and the wall members 201, 202 and the drainage groove 110. As long as it is removable, it is not particularly limited. For example, the core portion may be formed continuously from the upper end to the lower end of the end portions 43 and 44, and the core portion may be inserted into the receiving portion continuously formed from the wall members 201 and 202 to the drainage groove 110. Further, the ends 43 and 44 may be attached to the wall members 201 and 202 and the drainage groove 110 with a waterproof surface fastener. Further, the ends 43, 44 may be attached to the wall members 201, 202 and the drainage groove 110 with adhesive tape.

The weight 5 is placed on the bottom portion 42 of the waterproof sheet 4, that is, is placed on the portion of the waterproof sheet 4 facing the bottom surface 110a of the drainage groove 110. The weight 5 is a flat plate made of metal, and is formed of a single weight or a plurality of weights so that the weight 5 can be linearly placed on the bottom portion 42 from the end portion 43 to the end portion 44. That is, the weight 5 is continuously placed on the bottom portion 42 from the end portion 43 to the end portion 44 when the drainage ditch 110 is viewed from the outdoor side to the indoor side. Here, the weight 5 is placed between the main body portion 41 and the side surface 110b via between the bottom surface 110a and the bottom portion 42 before the water pressure due to the water flowing into the drainage groove 110 sufficiently acts on the bottom portion 42. It prevents water from entering.

Next, a procedure when the drainage groove lid 2 in the collapsed state is used as the waterproof structure 1-1 will be described. In the case of normal rainfall, as shown in FIG. 3, the water W1 flowing from the outdoor side of the building 200 toward the indoor side through the opening 210 is passed through the drainage ditch lid 2 in the collapsed state. It is drained to the outside by the drainage ditch 110. On the other hand, for example, in heavy rain, tsunami, flooding of rivers, etc., as shown in FIG. 5, a large amount of water W2 flows into the drainage ditch 110, so that the drainage to the outside by the drainage ditch 110 cannot follow and the water W2 is on the floor surface. There is a possibility of overflowing to 100. In such a case, first, the drainage ditch lid 2 in the inverted state is erected, and the end portion of the drainage ditch lid 2 in the upright state is placed between the holding portion 32 and the holding member 31b of the holder 3 which has been unfolded and assembled in advance. 22 is sandwiched. Next, the holder 3 is fixed to the floor surface 100 by the fixing portion 33. This work is performed on each holder 3 and each drainage groove lid 2, and the holder 3 maintains the upright state of all the drainage groove lids 2 installed in the opening 210. Next, the waterproof sheet 4 is installed on the outdoor side of the drainage groove lid 2 in an upright state. Specifically, after the end portions 43 and 44 are attached to the wall members 201 and 202 and the side surfaces 110c and 110d, the bottom portion 42 is expanded on the floor surface 100, the weight 5 is installed on the bottom portion 42, and the main body portion 41 is installed. Is attached to the drainage ditch lid 2. As a result, the water stop structure 1-1 using the drainage groove lid 2 is installed. The height of the drainage groove lid 2 in the upright state from the floor surface 100 is about 30 cm to 40 cm at the highest.

When a large amount of water W2 flows into the drainage ditch 110 and exceeds the drainage capacity of the drainage ditch 110, water begins to accumulate in the drainage ditch 110. Since the water pressure of the water stored in the drainage groove 110 acts on the waterproof sheet 4, the waterproof sheet 4 is in close contact with the bottom surface 110a and the side surfaces 110b, 110c, 110d, and the water in the drainage groove 110 is in close contact with the waterproof sheet 4 and the bottom surface 110a. And it is prevented from getting in between the side surfaces 110b, 110c and 110d. Further, when the water level WL rises above the floor surface 100, the water pressure of the water above the floor surface 100 acts on the waterproof sheet 4, so that the waterproof sheet 4 comes into close contact with the drainage groove lid 2 and the wall members 201 and 202. Water above the floor surface 100 is prevented from entering between the waterproof sheet 4, the drainage groove lid 2, and the wall members 201 and 202.

From the above, in the waterproof structure 1-1 according to the present embodiment, the waterproof sheet 4 attached to the indoor side of the drainage groove lid 2 in the upright state invades the indoor side of the water above the floor surface 100. Can be suppressed to a height H from the floor surface 100 to the upper end of the waterproof sheet 4. That is, even if the opening / closing body for closing the opening 210 such as a shutter or a door is not installed in the opening 210, it is possible to prevent water from entering from the outdoor side to the indoor side through the opening 210. .. Further, the water stop structure 1-1 according to the present embodiment is not a water stop structure using an opening / closing body, and the height of the drainage groove lid 2 in the upright state is a height that a person can sufficiently straddle. , The opening 210 can be used to move back and forth between the outside and the building 200. Further, as shown in FIG. 1, in the water blocking structure 1-1, since the water blocking structure 1-1 can be applied to all of the width directions of the opening 210, water from the opening 210 to the indoor side can be applied. Intrusion can be reliably prevented.

[Embodiment 2]
Next, the waterproof structure according to the second embodiment will be described. FIG. 7 is a cross-sectional view showing the drainage groove lid in the collapsed state according to the second embodiment. FIG. 8 is a cross-sectional view showing a configuration example of the waterproof structure according to the second embodiment. The difference between the waterproof structure 1-2 according to the second embodiment and the waterproof structure 1-1 according to the first embodiment is that the insertion groove 122a into which one end 23 (brimmed portion 23a) of the drainage groove lid 2 is inserted. Is the point where is formed. Since the basic configuration and operation of the waterproof structure 1-2 according to the second embodiment are the same as or almost the same as the basic configuration and operation of the waterproof structure 1-1 according to the first embodiment, the same reference numerals are used. The description of the elements shown will be omitted or simplified (the same applies to the following embodiments 3 to 6).

As shown in FIG. 7, the drainage groove lid 2 has brim portions 22a and 23a formed at the end portions 22 and 23. The brim portions 22a and 23a are formed at the end portions 22 and 23 so as to extend in the longitudinal direction of the drainage groove lid 2. The brim portions 22a and 23a come into contact with the floor surface 100 (in this embodiment, the upper end surface of the block 120 having the same plane as the floor surface 100) when the drainage ditch lid 2 is in an inverted state, so that the block 120 and the drainage ditch lid 2 are in contact with each other. Prevents foreign matter such as dust from entering the gap with 2.

The block 120 is formed with one end of the ends 22 and 23 of the drainage groove lid 2, and in the present embodiment, an insertion groove 122a into which the brim portion 23a is inserted is formed downward. The insertion groove 122a is a holding means together with the holder 3, and is formed in a step portion 122 formed on the indoor side of the drainage groove 110. In this embodiment, the drainage hole 123 is formed not on the bottom surface 110a of the drainage ditch 110 but on the side surface 110e on the outdoor side of the drainage ditch 110. Therefore, the water that has flowed into the drainage ditch 110 is drained to the outside through the drainage hole 123 and the sewer pipe 130 formed on the side surface 110e. In this case, since the bottom surface 110a does not have the drainage hole 123, the bottom portion 42 of the waterproof sheet 4 can be installed on the bottom surface 110a without considering the drainage hole 123.

The holder 3 has a holding portion 34 as shown in FIG. In the present embodiment, the holding portion 34 is formed in the central portion of the holding member 31b so as to project toward the drainage groove lid 2 in an upright state and the tip portion 34a projecting upward (opposite to the drainage groove 110 side). There is. That is, the holding portion 34 is formed in an L shape when the holding tool 3 is viewed from the width direction (axial direction of each pin). The holding portion 34 is inserted into the through hole 21 and sandwiches the drainage groove lid 2 in an upright state between the holding member 31b to prevent the drainage groove lid 2 from lying down.

Next, a procedure when the drainage groove lid 2 in the collapsed state is used as the waterproof structure 1-2 will be described. As shown in FIG. 8, first, the drainage ditch lid 2 in the collapsed state is erected, and the holding portion 34 of the holder 3 which has been unfolded and assembled in advance is inserted into the through hole 21 to form the holding portion 34 and the holding member 31b. The drainage ditch lid 2 in an upright state is sandwiched between them. Next, the holder 3 is fixed to the floor surface 100 by the fixing portion 33. This work is performed on each holder 3 and each drainage groove lid 2, and the holder 3 maintains the upright state of all the drainage groove lids 2 installed in the opening 210. Next, the waterproof sheet 4 is installed on the outdoor side of the drainage groove lid 2 in an upright state. As a result, the waterproof structure 1-2 using the drainage groove lid 2 is installed.

From the above, the waterproof structure 1-2 according to the present embodiment can exert the same effect as that of the first embodiment. Further, since the brim portion 23a of the drainage groove lid 2 in the upright state is inserted into the insertion groove 122a, it is possible to prevent the drainage groove lid 2 from lying down. Therefore, the upright state of the drainage groove lid 2 can be reliably maintained.

The holder 3 in the above-described first to second embodiments can be removed from the floor surface 100 and can be folded, but the present invention is not limited to this, and the holder 3 is fixed to the floor surface 100 and the drainage ditch lid 2 stands up. It suffices if the state can be maintained. For example, when the waterproof structure 1-1 is used, a structure that cannot be folded is fixed to the floor surface 100, or the drainage groove lid 2 that is flush with the floor surface 100 in the laid-down state and is in the upright state is used. It may be a foldable structure to be held.

[Embodiment 3]
Next, the waterproof structure according to the third embodiment will be described. FIG. 9 is a cross-sectional view showing the drainage groove lid in the collapsed state according to the third embodiment. FIG. 10 is a cross-sectional view showing a configuration example of the waterproof structure according to the third embodiment. The difference between the water-stopping structure 1-3 according to the third embodiment and the water-stopping structure 1-1 according to the first embodiment is that the drainage groove lid 2 is in an upright state and an inverted state by the rotation mechanism 6 and the rotation regulation mechanism 7. It is a point to switch to.

The rotating mechanism 6 constitutes a holding means, rotates the drainage groove lid 2 between an inverted state and an upright state, and includes a base 61 and a rotating shaft 62. ing. The base portion 61 rotatably supports the end portion 23 of the drainage groove lid 2, and is fixed to the step portion 122. The rotating shaft 62 is rotatably inserted into the end portion 23 of the drainage groove lid 2, and both ends thereof are fixed to the base portion 61.

The rotation regulation mechanism 7 constitutes a holding means and operates in conjunction with the rotation between the inverted state and the upright state of the drainage groove lid 2, and the drainage groove side base 71 and the drainage groove side base 71 and the drainage. The groove lid side base portion 72, the first arm 73, and the second arm 74 are included. The drainage ditch side base 71 is fixed to the side surface 110e which is the side opposite to the side where the drainage ditch lid 2 stands up, that is, the outdoor side. The drainage groove lid side base 72 is fixed to the back surface 2b side of the drainage groove lid 2. Both ends of the first arm 73 are rotatably supported by the drainage ditch side base 71 and the second arm 74 by support pins 75 and 76, respectively. Both ends of the second arm 74 are rotatably supported by the second arm 74 and the drainage groove lid side base 72 by support pins 76 and 77, respectively. That is, the rotation restricting mechanism 7 is provided across the back surface 2b side of the drainage groove lid 2 and the drainage groove 110 between the side on which the drainage groove lid 2 stands up and the opposite side. As shown in FIG. 9, the rotation restricting mechanism 7 is housed in the drainage ditch 110 in the inverted state of the drainage ditch lid 2. Further, as shown in FIG. 10, the rotation restricting mechanism 7 prevents the drainage groove lid 2 from lying down indoors because the first arm 73 and the second arm 74 are aligned with each other in the upright state of the drainage groove lid 2. regulate. Further, when the drainage groove lid 2 tries to lie down on the outdoor side, the straight first arm 73 and the second arm 74 serve as a support to prevent the drainage groove lid 2 from laying down on the outdoor side.

In the present embodiment, the check valve 150 is formed in the sewer pipe 130. The check valve 150 regulates the backflow of water from the sewer pipe 130 toward the drainage ditch 110. Therefore, even if the bottom surface 110a has the drainage hole 123, water does not flow from the drainage hole 123 toward the drainage groove 110. Therefore, the bottom portion 42 of the waterproof sheet 4 is formed on the bottom surface 110a without considering the drainage hole 123. Can be installed in.

Next, a procedure when the drainage groove lid 2 in the collapsed state is used as the waterproof structure 1-3 will be described. As shown in FIG. 9, first, the drainage groove lid 2 in the inverted state is erected by the rotation mechanism 6 with the end portion 23 as the rotation base point. At this time, the rotation restricting mechanism 7 operates in conjunction with the rotation of the drainage groove lid 2 from the inverted state to the upright state, and the first arm 73 and the second arm 74 are aligned. Next, the waterproof sheet 4 is installed on the outdoor side of the drainage groove lid 2 in an upright state. As a result, the water stop structure 1-3 using the drainage groove lid 2 is installed.

From the above, the water blocking structure 1-3 according to the present embodiment can exert the same effect as that of the first embodiment. Further, the rotation of the drainage ditch lid 2 from the inverted state to the upright state by the rotation mechanism 6 is interlocked with the rotation regulation mechanism 7 provided in advance, so that the drainage ditch lid 2 in the upright state is inverted. Since it operates so as to be regulated, the holder 3 is not required, and the waterproof structure 1-3 can be easily installed.

[Embodiment 4]
Next, the waterproof structure according to the fourth embodiment will be described. It is sectional drawing which shows the structural example of the waterproof structure which concerns on Embodiment 4. FIG. The difference between the waterproof structure 1-4 according to the fourth embodiment and the waterproof structure 1-3 according to the third embodiment is that the side where the drainage groove lid 2 stands up is the outdoor side, and the drainage of the drainage groove lid 2 in the upright state The point is that the waterproof sheet 4 is installed on the side opposite to the groove 110 side.

In the present embodiment, the main body 41 of the waterproof sheet 4 covers the entire surface of the drainage groove lid 2 in the upright state on the outdoor side. The main body 41 is in close contact with the drainage groove lid 2 due to the water pressure of the water on the floor surface 100. In the present embodiment, the bottom portion 42 covers a part of the floor surface 100. The bottom portion 42 is continuously formed with the main body portion 41, and by being in close contact with the floor surface 100 due to the water pressure of the water on the floor surface 100, the water on the floor surface 100 is brought into contact with the main body portion 41 and the floor surface 100. Prevent intrusion in between. The ends 43, 44 cover a part of the wall members 201, 202 in this embodiment. The end portions 43 and 44 are continuously formed with the main body portion 41 and the bottom portion 42, respectively, and are brought into close contact with the wall members 201 and 202 by the water pressure of water on the floor surface 100, respectively, so that the end portions 43 and 44 are on the floor surface 100. Prevents water from entering between the ends 43, 44 and the wall members 201, 202. The weight 5 is placed on the portion of the waterproof sheet 4 facing the floor surface 100.

Next, a procedure when the drainage groove lid 2 in the collapsed state is used as the waterproof structure 1-4 will be described. As shown in FIG. 11, first, the drainage groove lid 2 in the collapsed state is erected by the rotation mechanism 6 with the end portion 23 as the rotation base point. At this time, the rotation restricting mechanism 7 operates in conjunction with the rotation of the drainage groove lid 2 from the inverted state to the upright state, and the first arm 73 and the second arm 74 are aligned. Next, the waterproof sheet 4 is installed on the outdoor side of the drainage groove lid 2 in an upright state. As a result, the waterproof structure 1-4 using the drainage groove lid 2 is installed.

From the above, the waterproof structure 1-4 according to the present embodiment can exhibit the same effect as that of the third embodiment. Further, since the waterproof sheet 4 can be installed without using the drainage ditch 110, the waterproof structure 1-4 can be easily installed.

[Embodiment 5]
Next, the waterproof structure according to the fifth embodiment will be described. FIG. 12 is a plan view showing a drainage ditch lid installed on the floor surface according to the fifth embodiment. FIG. 13 is a plan view showing a schematic configuration example of the waterproof structure according to the fifth embodiment. The difference between the waterproof structure 1-5 according to the fifth embodiment and the waterproof structure 1-1 according to the first embodiment is that the width of the drainage groove 110 is longer than the width L of the opening 210.

In the present embodiment, as shown in FIG. 12, the drainage ditch 110 is formed on the outdoor side of the opening 210 provided in the building 200, and its length is longer than the width L of the opening 210. Both ends of the drainage ditch 110 are formed adjacent to the wall members 201 and 202.

In the waterproof structure 1-5 according to the present embodiment, as shown in FIG. 13, the waterproof sheet 8 extends to the wall members 201 and 202 continuous with the drainage groove lid 2 in the upright state, and the waterproof sheet 8 is formed. Both ends are attached to the wall members 201 and 202. Further, the waterproof sheet 8 is laid on the floor surface 100 in contact with the wall members 201 and 202 and the drainage ditch 110. It is preferable that the weight is placed not only on the portion of the waterproof sheet 8 facing the bottom surface 110a of the drainage groove 110 but also on the portion facing the floor surface 100. The waterproof structure 1-5 according to the present embodiment can also have the same effect as that of the first embodiment.

[Embodiment 6]
Next, the waterproof structure according to the sixth embodiment will be described. FIG. 14 is a plan view showing a drainage ditch lid installed on the floor surface according to the sixth embodiment. FIG. 15 is a plan view showing a schematic configuration example of the waterproof structure according to the sixth embodiment. The difference between the waterproof structure 1-6 according to the sixth embodiment and the waterproof structure 1-1 according to the first embodiment is that the width of the drainage groove 110 is shorter than the width L of the opening 210.

In the present embodiment, the drainage ditch 110 is formed in the opening 210 provided in the building 200 as shown in FIG. 14, and the length thereof is shorter than the width L of the opening 210. Both ends of the drainage ditch 110 are formed so as to be separated from the wall members 201 and 202.

In the waterproof structure 1-6 according to the present embodiment, as shown in FIG. 15, the waterproof sheet 9 does not extend to the wall members 201 and 202, and is attached to the outdoor side of the upright drainage ditch lid 2. ing. Therefore, a gap is formed between the waterproof sheet 9 and the wall members 201 and 202. A filling member 10 such as a sandbag is installed in this gap. In the waterproof structure 1-6 according to the present embodiment, it is possible to prevent water from entering from the outdoor side to the indoor side in a part of the area of the opening 210. In the water stop structure 1-6, the region of the opening 210 where the intrusion of water cannot be suppressed can suppress the intrusion of water in the entire region of the opening 210 by suppressing the intrusion of water by the filling member 10. ..

In the first to first to sixth embodiments, the adjacent drainage groove lids 2 may be connected by a connecting tool (not shown). In this case, since all the drainage groove lids 2 can be handled as one structure, it is not necessary to install the holder 3 corresponding to each drainage groove lid 2. As a result, the number of members constituting the waterproof structure 1-1 to 1-6 can be reduced.

Further, in the first to first to sixth embodiments, the waterproof sheet 4 may be attached to the wall members 201 and 202 by extending both end portions 43 and 44 to the wall members 201 and 202, respectively. Further, in the first to sixth embodiments, the waterproof sheet 4 may be attached to the filling member 10 by extending both ends 43 and 44 to the filling member 10, respectively. Further, in the first to sixth embodiments, the waterproof sheet 4 may be attached by extending both ends 43 and 44 to the filling member 10 and sandwiching the waterproof sheet 4 between the filling member 10 and the drainage water lid 2. ..

As described above, the waterproof structure according to the present invention is useful for an opening having no opening / closing body, and is particularly suitable for suppressing the intrusion of water from the outdoor side to the indoor side.

1-1-1-6 Water stop structure 2 Drainage ditch lid 3 Cage 4 Waterproof sheet 5 Weight 6 Rotation mechanism 7 Rotation regulation mechanism 100 Floor surface 110 Drainage ditch 120 Block 122a Insertion ditch 200 Building 201,202 Wall member

Claims (6)

It is a water-stop structure using a drainage ditch lid that covers the drainage ditch formed on the floor.
A holding means for holding the drainage ditch lid in an upright position with respect to the drainage ditch,
A waterproof tarpaulin attached to the outdoor side of the upright drainage groove lid, and
Equipped with
The tarpaulin covers at least a portion of the outdoor side ditch lid of the upright, and extend the until continuous surface drainage ditch lid and lower upright,
The holding means holds the drainage ditch lid in an upright state on the indoor side with respect to the drainage ditch.
The tarpaulin extends to the indoor side surface of the drainage ditch and to the bottom surface of the drainage ditch.
A waterproof structure characterized by having a weight placed on a portion of the waterproof sheet facing the bottom surface. The water-stopping structure according to claim 1 , wherein the holding means is fixed to the floor surface on the indoor side of the upright drainage groove lid, and is a holder for restricting the movement of the upright drainage groove lid. The water blocking structure according to claim 1 or 2 , wherein the holding means includes an insertion groove formed in at least the drainage ditch or the floor, and one end of the drainage ditch lid is inserted in the indoor / outdoor direction. The holding means is
A rotation mechanism that rotates the drainage ditch lid between the inverted state and the upright state that covers the drainage ditch.
It is provided between the back surface side of the drainage ditch lid and the side of the drainage ditch that is opposite to the side on which the drainage ditch lid stands up, and is housed in the drainage ditch in the inverted state. The water-stopping structure according to claim 1, further comprising a rotation restricting mechanism that regulates the rotation of the drainage groove lid by the rotating mechanism. Further provided with a drainage hole formed in the drainage ditch and a sewer pipe connected to the drainage hole.
The water stop structure according to claim 4, wherein a check valve is formed in the sewer pipe. Further provided with a drainage hole formed in the drainage ditch and a sewer pipe connected to the drainage hole.
The water blocking structure according to any one of claims 1 to 3, wherein the drain hole and the sewer pipe are formed on the side surface on the outdoor side.

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