JP7627945B2 - Water stop device - Google Patents

Description

Article 30, Paragraph 2 of the Patent Act applied May 1, 2021 Estimates published price version, May 2021 issue, page 61, published by the Economic Research Institute, a general incorporated foundation

The present invention relates to a water stop device equipped with a water stop plate.

The entrances and exits of buildings, hospitals, subway stations, underground parking lots, and other structures are prone to water flowing into them due to sudden downpours or typhoons, and so preventing this with water stops has been considered. A known conventional water stop is a ceiling-retractable type, as disclosed in Patent Document 1, in which the water stop is installed so that it can be raised and lowered by a chain and pulled up into the ceiling when not in use.

Japanese Utility Model Application Publication No. 3-93820

However, with conventional ceiling-retractable water stops, if the height was increased to ensure watertightness, the water stop would not fit completely inside the ceiling, and the bottom of the water stop would protrude from the ceiling, making it difficult to enter or exit the structure.

The present invention aims to provide a water stop device that allows compact storage while ensuring the required height of the water stop, and also allows the water stop to be installed quickly and easily.

The object of the present invention is achieved by a waterstop device comprising a waterstop, a lifting mechanism for raising and lowering the waterstop, and a pair of guide mechanisms for engaging with both the left and right sides of the waterstop to guide the raising and lowering of the waterstop, the guide mechanism comprising a first guide portion for guiding the waterstop, which stands in the installation position, to rise while remaining in the upright state, and a second guide portion above the first guide portion for tilting the waterstop to guide it to a storage position, the lifting mechanism comprising a lifting rope having one end attached to the lower part of the waterstop , the waterstops being arranged so that multiple waterstops are stacked one on top of the other in the installation position, and the lifting mechanism and the pair of guide mechanisms being individually provided corresponding to each waterstop .

The waterstop can be configured so that the surface side that receives water pressure faces downward, guided by the second guide portion. Alternatively, the waterstop can be configured so that the surface side that receives water pressure faces upward, guided by the second guide portion.

It is preferable that the water stop is guided along the first guide portion and the second guide portion by rollers.

The water stop preferably has a bottom water stop material interposed between the water stop plate and the installation surface, and the bottom water stop material preferably has a protruding portion that protrudes toward the surface side that receives water pressure.

It is preferable that a counterweight is attached to the other end of the lift rope via a sheave.

The present invention provides a water stop device that allows compact storage while ensuring the required height of the water stop, and also allows the water stop to be installed quickly and easily.

1 is a front view of a water stopping device according to an embodiment of the present invention. 2 is a cross-sectional view taken along line AA of FIG. 1. This is a cross-sectional view taken along line B-B of FIG. FIG. 4 is a cross-sectional view of a main part of the waterproofing device shown in FIG. 3 . 4 is a cross-sectional view for explaining the operation of the waterproofing device shown in FIG. 3. FIG. 4 is a cross-sectional view of a water stopping device according to another embodiment of the present invention. FIG. 11 is a front view of a water stopping device according to still another embodiment of the present invention. This is a cross-sectional view taken along the line CC of FIG. This is a cross-sectional view taken along the line D-D of FIG. FIG. 10 is an enlarged view of a main part of FIG. 9 . 10 is a cross-sectional view for explaining the operation of the waterproofing device shown in FIG. 9 . 7 is a plan view of a main portion showing a modified example of the water stopping device shown in FIG. 6. FIG. 4 is a cross-sectional view showing a modified example of the waterproofing device shown in FIG. 3 .

The embodiment of the present invention will be described below with reference to the attached drawings. FIG. 1 is a front view of a water stop device according to one embodiment of the present invention. FIG. 2 is a cross-sectional view taken along line A-A in FIG. 1, and FIG. 3 is a cross-sectional view taken along line B-B in FIG. 2. As shown in FIGS. 1 to 3, the water stop device 1 includes a water stop plate 10, a pair of guide mechanisms 20a, 20b arranged on both the left and right sides of the water stop plate 10, and a lifting mechanism 30 for lifting the water stop plate 10. The water stop device 1 can be arranged to stop water from entering and exiting an entrance 93 formed in the front part between the pair of opposing side walls 91a, 91b in a structure including a pair of opposing side walls 91a, 91b that stand upright so as to face each other from an installation surface F such as a floor surface on which the water stop plate 10 is installed, and a pair of front side walls 92a, 92b that are respectively connected to the front parts of the pair of opposing side walls 91a, 91b.

The waterstop plate 10 comprises a rectangular flat plate body 11, a bottom waterstop material 12 provided on the bottom surface of the plate body 11, and back waterstop materials 13a, 13b provided on both the left and right sides of the plate body 11. The plate body 11 can be, for example, a honeycomb panel in which an aluminum honeycomb-structured core material is covered with an aluminum plate, which allows for weight reduction while maintaining rigidity. At the bottom of the front side (outdoor side) of the plate body 11 that receives water pressure, a horizontally extending rod-shaped handle 14 is supported by a bracket so as to protrude from the surface of the plate body 11.

The bottom water stop material 12 and the back water stop materials 13a, 13b are both strip-shaped or plate-shaped members made of rubber, resin, or the like. The bottom water stop material 12 is provided over the entire left-right direction of the bottom surface of the plate body 11, and has a protruding portion 121 that protrudes beyond the surface side of the plate body 11. The back water stop materials 13a, 13b are provided over the entire top-bottom direction of the plate body 11 on both the left and right sides of the back surface of the plate body 11.

The pair of guide mechanisms 20a, 20b are provided with rectangular cylindrical casings 21a, 21b that extend vertically, and guide rails 22a, 22b that are fixed to the inner walls of the casings 21a, 21b and guide the elevation and lowering of the waterstop 10. Note that while FIG. 3 is a cross-sectional view of one guide mechanism 20a, the other guide mechanism 20b has similar components arranged symmetrically to the one guide mechanism 20a, so in FIG. 3, the reference numerals of the components of the other guide mechanism 20b that correspond to the components of the one guide mechanism 20a are written in parentheses.

Enlarged sections 211a, 211b are formed at the top of the casings 21a, 21b, with enlarged internal spaces, and the enlarged sections 211a, 211b are connected to each other by a horizontally extending housing-like storage member 23 so that the internal spaces are in communication. The back sides of the casings 21a, 21b are fixed to a pair of front side walls 92a, 92b, and the storage member 23 is arranged to span above the entrance/exit 93.

The casings 21a and 21b have slits extending vertically on their opposing surfaces, into which both left and right ends of the waterstop 10 are inserted. On both the left and right sides of the waterstop 10, rotatably supported rollers 15a and 15b are provided so as to protrude laterally, and the guide rails 22a and 22b engage with grooves formed in the circumferential direction of the rollers 15a and 15b, causing the waterstop 10 to rise and fall along the guide rails 22a and 22b.

As shown in FIG. 3, the guide rails 22a, 22b are provided with linear first guide portions 221a, 221b that guide the water stop plate 10, which stands on the installation surface F in the installation position, so that it rises while remaining in an upright state, and arc-shaped second guide portions 222a, 222b that tilt the water stop plate 10 above the first guide portions 221a, 221b so that the front side faces downward and guide it to a storage position within the storage member 23 (see FIG. 1).

The lifting mechanism 30 includes lifting ropes 31a, 31b, sheaves 32a, 32b, and counterweights 33a, 33b arranged in the casings 21a, 21b of the pair of guide mechanisms 20a, 20b. One end of the lifting ropes 31a, 31b is attached to mounting parts 16a, 16b provided at both the left and right ends of the waterstop 10. The other end of the lifting ropes 31a, 31b is attached to counterweights 33a, 33b via sheaves 32a, 32b supported on the upper part of the inner wall of the casings 21a, 21b. The total weight of the counterweights 33a, 33b is set to be approximately the same as the weight of the lifting plate 10. The mounting parts 16a, 16b are provided below the center of the waterstop 10 in the vertical direction (height direction).

The casings 21a and 21b are provided with vertically rising strip-shaped abutment sections 24a and 24b inside. Cam members 17a and 17b are provided on the left and right surfaces of the waterstop 10, and cam members 25a and 25b are also provided on the lower part of the inner wall of the casings 21a and 21b that face the cam members 17a and 17b. The waterstop 10 and counterweights 33a and 33b are arranged on both the front and back sides of the abutment sections 24a and 24b.

As shown in FIG. 4(a), the cam surfaces of the cam members 17a, 17b; 25a, 25b are inclined in the same direction relative to the vertical direction, and when the waterstop 10 descends from the state shown in FIG. 4(a), the cam surfaces slide against each other, and the waterstop 10 moves in the direction of the arrow X. As a result, as shown in FIG. 4(b), when the waterstop 10 is installed on the installation surface F, the back surface waterstop materials 13a, 13b are in close contact with the abutment portions 24a, 24b, and the bottom surface waterstop material 12 of the waterstop 10 is in close contact with the installation surface F, enabling water to be stopped. The bottom surface waterstop material 12 has a protruding portion 121 that protrudes from the surface side of the waterstop 10, so that when water accumulates on the surface side of the waterstop 10 due to heavy rain, the protruding portion 121 is pressed by water pressure, and the bottom surface waterstop material 12 is securely in close contact with the installation surface F.

The water stop plate 10 has engagement pieces 18a, 18b at both left and right ends that protrude toward the back surface, and engagement holes 241a, 241b are formed at the bottom of the abutment parts 24a, 24b. As shown in FIG. 4(b), the engagement pieces 18a, 18b engage with the engagement holes 241a, 241b, thereby reliably holding the water stop plate 10 in the installed position.

According to the water stop device 1 having the above configuration, in a situation where water stopping is required, water can be stopped by setting the water stop 10 in the installation position as shown in Figures 1 to 3. On the other hand, in normal times when the water stop 10 is not used, the water stop 10 is raised in an upright state along the first guide parts 221a, 221b by holding the grip part 14 and lifting the water stop 10 upward, and then tilted along the second guide parts 222a, 222b as shown in Figure 5, and stored in the storage part 23 (see Figure 1) in a substantially horizontal state. This makes it possible to make the storage space for the water stop 10 compact. Since the water stop 10 is balanced with the counterweights 33a, 33b, the water stop 10 can be easily lifted to the storage position with little force. The lifting ropes 31a, 31b are attached to the lower part of the waterstop 10, which is below the center of gravity of the waterstop 10, so the waterstop 10 can be tilted smoothly by the weight of the counterweights 33a, 33b.

When using the waterstop 10 stored in the storage position, the waterstop 10 can be quickly and easily set up in the installation position by pulling down the handle 24 using a rod with a hook or the like to raise the waterstop 10 upright. Note that if the waterstop 10 can be securely stored and held in the storage position, the weight of the waterstop 10 may be made slightly greater than the total weight of the counterweights 33a, 33b, which allows the waterstop 10 to be set up more quickly and easily.

Thus, the water stop device 1 of this embodiment, despite its simple and inexpensive configuration, allows the water stop 10 to be stored and installed easily and reliably, and even if the height of the water stop 10 is increased, storage space can be reduced, preventing the water stop 10 from obstructing entrances and exits 93, etc.

Although one embodiment of the present invention has been described above in detail, the specific aspects of the present invention are not limited to the above embodiment. For example, in this embodiment, the rollers 15a, 15b that guide the waterstop 10 along the first guide parts 221a, 221b and the second guide parts 222a, 222b are provided on the waterstop 10, but as shown in FIG. 6, the waterstop 10 may be guided by the first guide parts 221a, 221b and the second guide parts 222a, 222b consisting of a plurality of rollers 26a, 26b rotatably supported on the inner walls of the casings 21a, 21b. The rollers 26a, 26b that constitute the first guide parts 221a, 221b and the second guide parts 222a, 222b are spaced apart along the guide direction of the waterstop 10 and come into contact with the surfaces on both the left and right sides of the plate body 11 of the waterstop 10. In FIG. 6, components similar to those shown in FIG. 1 to FIG. 4 are given the same reference numerals (as in the following figures). With this configuration, there is no need to provide rollers on the waterstop 10, so the waterstop 10 can be made lighter and can be easily raised and lowered and installed. The first guide portion 221a in FIG. 6 may be configured to clamp the guided plate 19 extending out to the side of the waterstop 10 between rollers 26a, 26a, as shown in the plan view of the main part in FIG. 12, which allows the waterstop 10 to be raised and lowered smoothly.

In this embodiment, the water stop 10 stored in the storage position is guided by the second guide parts 222a, 222b so that the surface side that receives water pressure faces downward. With this configuration, the storage position of the water stop 10 is configured to protrude to the outdoor side, so that the reduction in indoor space due to the installation of the water stop device 1 can be suppressed. On the other hand, if the protrusion to the outdoor side due to the installation of the water stop device 1 is a problem, as shown in FIG. 13, the second guide parts 222a, 222b may be formed in a curved shape toward the back side of the water stop 10 (the right side of FIG. 13), so that the water stop 10 is stored so that the surface side that receives water pressure faces upward. Even with this configuration, the bottom water stop material 12 and the back water stop materials 13a, 13b of the water stop 10 can be brought into close contact with the installation surface F and the abutment parts 24a, 24b, respectively, to ensure reliable water stoppage.

In this embodiment, the lifting mechanism 30 has counterweights 33a, 33b attached to the other ends of the lifting ropes 31a, 31b that raise and lower the waterstop 10. However, by providing a hoist in place of the counterweights 33a, 33b and operating the hoist manually or electrically to wind up and unwind the lifting ropes 31a, 31b, the waterstop 10 can be raised and lowered without touching it.

In addition, the water stop device 1 of this embodiment is configured so that a single water stop plate 10 can be raised and lowered, but it is also possible to provide multiple water stops 10 and arrange them so that they are stacked vertically at the installation position. In this configuration, a lifting mechanism 30 and a pair of guide mechanisms 20a, 20b are provided individually for each of the multiple water stops 10, allowing each water stop plate 10 to be stored and installed individually and independently. With this configuration, it is possible to reduce the height of each water stop plate 10, allowing for compact storage, while increasing the maximum water stop height. In addition, the number of water stops 10 to be installed can be appropriately selected depending on the required water stop height.

Figure 7 is a front view of a water stop device according to another embodiment of the present invention, Figure 8 is a cross-sectional view taken along the line C-C of Figure 7, and Figure 9 is a cross-sectional view taken along the line D-D of Figure 8. As shown in Figures 7 to 9, the water stop device 1' comprises two water stops 10 arranged so as to overlap one above the other at the installation position, a lifting mechanism 30 that lifts and lowers each water stop 10 individually to guide it, and a pair of guide mechanisms 20a, 20b.

The guide mechanisms 20a, 20b are provided with two guide rails 22a, 22b to correspond individually to each waterstop 10. The specific configurations of each waterstop 10, each guide rail 22a, 22b, and each lifting mechanism 30 are similar to the configurations of the waterstop 10, guide rails 22a, 22b, and lifting mechanism 30 shown in Figures 1 to 4, so in Figures 7 to 9, components similar to those shown in Figures 1 to 4 are given the same reference numerals and detailed description is omitted.

As shown in FIG. 9, the thickness of the upper water stop 10 is set smaller than that of the lower water stop 10 when the two water stops 10 are installed at the installation position, and the entire floor surface water stop material 12 provided on the upper water stop 10 is in close contact with the upper surface of the lower water stop 10, thereby stopping water in this area. Also, as shown in FIG. 10, the two counterweights 33a, 33a arranged vertically inside the casing 21a are configured so that they can be raised and lowered without interfering with each other by forming a through hole 331a and a balance hole 332a in the upper counterweight 33a, and the lifting rope 31a attached to the lower counterweight 33a extends upward through the through hole 331a.

The water stop device 1' shown in Figures 7 to 9 can be stored in a stacked state by lifting the upper water stop plate 10 from the installed position as shown in Figure 11(a) and storing it in the storage position, and then lifting the lower water stop plate 10 and storing it in the storage position as shown in Figure 11(b), tilting the two water stops 10 approximately horizontally. In this way, the two water stops 10 can be stored in a compact state while increasing the maximum water stop height. The number of water stops 10 may be three or more, and can be configured in the same way as the water stop device 1' described above.

REFERENCE SIGNS LIST 1 Water stop device 10 Water stop plate 12 Bottom water stop material 121 Projection portion 15a, 15b Roller 20a, 20b Guide mechanism 221a, 221b First guide portion 222a, 222b Second guide portion 26a, 26b Roller 30 Lifting mechanism 31a, 31b Lifting rope 32a, 32b Sheave 33a, 33b Counterweight

Claims (6)

The water stop is provided with a water stop plate, a lifting mechanism for lifting and lowering the water stop plate, and a pair of guide mechanisms for engaging with the left and right sides of the water stop plate to guide the lifting and lowering of the water stop plate,
The guide mechanism includes a first guide portion that guides the water stop plate, which stands at the installation position, to rise while remaining in the upright state, and a second guide portion that tilts the water stop plate above the first guide portion and guides it to a storage position,
The lifting mechanism includes a lifting rope having one end attached to a lower portion of the waterstop ,
The water stop plates are arranged so that multiple plates are stacked one on top of the other at the installation position,
A water stopping device in which the lifting mechanism and the pair of guide mechanisms are individually provided corresponding to each of the water stopping plates . The water stop device according to claim 1 , wherein the water stop is guided by the second guide portion so that a surface side receiving water pressure faces downward. The water stop device according to claim 1 , wherein the water stop is guided by the second guide portion so that the surface side receiving the water pressure faces upward. The water stop device according to claim 1 , wherein the water stop plate is guided along the first guide portion and the second guide portion by rollers. The water stop plate has a bottom water stop material interposed between the bottom water stop plate and the installation surface,
The water-stopping device according to claim 1 , wherein the bottom water-stopping material has a protruding portion that protrudes toward a surface side that receives water pressure. 6. A water stop device according to claim 1, wherein a counterweight is attached to the other end of the lifting rope via a sheave.

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