JP2001011904A - Domestic rainwater storage device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently store rainwater in a building having a flat roof and no rain gutter by fitting a rainwater collecting tank on the outer wall of the building, and opening the rainwater collecting tank at the time of a rainfall to collect and store rainwater in the rainwater storage tank. SOLUTION: This domestic rainwater storage device is constituted of a rainwater collecting tank 10 fitted on the outer wall 2 of a building 1 and a water storage tank 20 connected to the rainwater collecting tank 10 by a connecting pipe 3 and provided below the rainwater collecting tank 10. A rainfall sensor 4 is fitted to the outer wall 2, the rainfall sensor 4 is connected to a drive motor 5 opening or closing the rainwater collecting tank 10, and the drive motor 5 is automatically rotated by the rainfall sensor 4 in the opening direction of the rainwater collecting tank 10 at the time of a rainfall. The connecting pipe 3 is connected to the lower section of the rainwater collecting tank 10 and is communicated with the water storage tank 20 through the outer wall 2, and the rainwater collected in the rainwater collecting tank 10 is stored in the water storage tank 20 via the connecting pipe 3, thereby rainwater can be efficiently stored even in a building having a flat roof and no rain gutter.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a household rainwater storage device that can collect and store rainwater during rainfall and use it effectively.

[0002]

2. Description of the Related Art Conventionally, as a household rainwater storage device for storing rainwater, as shown in FIG. 4, rainwater falling on a mountain-shaped roof 51 of a building 50 is collected by a rain gutter 52, and a water storage tank provided underground. It is common to store the water at 53 and use it for a bath 55, a toilet 56, or middle water such as watering by a pump 54 as necessary. Further, there has been an attempt to attach a purifying device such as a filter (not shown) to the water storage tank 53 and use rainwater for drinking water or other clean water.

[0003]

In the above-mentioned conventional household rainwater storage device, the roof has a mountain shape and the rain gutter can efficiently collect rainwater as in a general residential building in Japan. In the environment, there is no problem, for example,
In a building having a flat roof and no rain gutter, such as an apartment house, there has been a problem that rainwater cannot be collected by a conventional household rainwater storage device using a rain gutter.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a household rainwater storage device capable of efficiently storing rainwater even in a building having a flat roof and no rain gutter. Is provided.

[0005]

To achieve the above object, the present invention provides a rain water collecting tank attached to an outer wall of a building, a water collecting tank connected to the water collecting tank, and provided below the water collecting tank. The rainwater collecting tank is opened during rainfall to collect rainwater and stored in the water storage tank. Further, the water collecting tank is characterized in that a rotatable support shaft is provided at a lower portion, an upper portion is configured to be openable by bellows, and a cross section is a substantially inverted triangular tank. Further, the water storage tank is an underground tank. Further, the water storage tank is provided on a wall of the building. Further, a rain sensor is provided on the outer wall, and the rain sensor detects rain and automatically opens the water collecting tank.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings. FIG. 1 is a partially cutaway schematic view showing an outline of a household rainwater storage device according to the present invention, FIG. 2 is a side view showing a water collecting tank of the household rainwater storage device of FIG. 1, and FIG. 1 is a partially broken schematic view showing an embodiment of the household rainwater storage device according to the present invention.

As shown in FIG. 1, a household rainwater storage device of the present invention includes a rainwater collecting tank 10 attached to an outer wall 2 of a building 1, and a water collecting tank 10 connected to the water collecting tank 10 by a connecting pipe 3. And a water storage tank 20 provided at a lower portion. The water collection tank 10 is opened at the time of rain to collect rainwater and stored in the water storage tank 20.

A rain sensor 4 is attached to the outer wall 2 so as to detect a rain condition. The rain sensor 4 is connected to a drive motor 5 for opening and closing the water collecting tank 10. The sensor 4 automatically rotates the drive motor 5 in the direction in which the water collecting tank 10 is opened when it rains. The rain sensor 4 and the drive motor 5 are connected to a switch 6 in the room, and the switch 6 is turned off.
In the case of the state, the drive motor 5 does not rotate even if the rainfall sensor 4 detects the rainfall state.

As shown in FIG. 2, the water collecting tank 10 can be opened and closed in a bellows manner by a drive motor 5 and is attached to a recess formed in the outer wall 2. This water collecting tank 10
Is provided with a support shaft 11 at the bottom, and a front side plate 12 formed of metal or synthetic resin and a plurality of supports 13, 13, 13,... Are rotatably mounted on the support shaft 11. . The water collecting tank 10 is fixed to the outer wall 2 by a rear plate 14.

The water collecting tank 10 has a waterproof cloth 15 made of a waterproof canvas or a sheet of a flexible synthetic resin between the front side plate 12 and the rear side plate 14.
Rainwater can be temporarily stored inside. The plurality of columns 13, 13, 13,... Attached to the waterproof cloth 15 at equal intervals serve as bones of an umbrella.

A drive motor 5 for opening and closing the water collecting tank 10
Denotes a reversible motor, which is attached to the side surface of the outer wall 2. In this drive motor 5, a sprocket gear 5a is attached to a drive shaft, and a chain 16 meshes with the sprocket gear 5a. The front end 16a of the chain 16 is connected to the front side plate 12, and the rear end 16b is free. Then, the rotation of the sprocket gear 5a drives the chain 16, and the water collecting tank 1
0 is opened and closed. That is, FIG.
When the sprocket gear 5a rotates clockwise, the chain 16 is sent out, and the front side plate 12 opens. Then, as shown in FIG. 2B, when the sprocket gear 5a rotates counterclockwise, the chain 16 is pulled toward the rear end 16b, and the front plate 12 is closed. Also, the rear end 16 of the chain 16
b denotes a water collecting tank 1 which is not in a free state, for example, is provided with a not-shown recoil type storage chamber using a coil spring.
When closing 0, the chain 16 may be automatically wound up.

The rain sensor 4 (see FIG. 1) for starting the drive motor 5 is a known humidity sensor using ceramic or semiconductor. When the rainfall occurs, the humidity rises, the moisture is absorbed by the sensor, and the electric resistance decreases. Therefore, the rainfall sensor 4 is automatically turned on and the drive motor 5 is turned on.
, A current flows to rotate in a clockwise direction, and the water collecting tank 10 is opened. Therefore, even if the resident of the building to which this device is attached is out of the office, it is possible to automatically open the water collecting tank 10 and collect rainwater when it rains. The switch 6 (FIG. 1)
) Is always set to the ON state.
When 0 is not used, the water collecting tank 10 is set to an OFF state so that the water collecting tank 10 is not automatically opened even in a rainy state.

Further, when the water collecting tank 10 is closed, when the rain stops and the humidity decreases, the rain sensor 4 is turned off. When the water is turned off, the drive motor 5 is automatically turned counterclockwise. A switch circuit (not shown) for reverse rotation may be provided, or a reverse switch for the drive motor 5 may be provided in connection with the switch 6.

A connection pipe 3 is connected to a lower part of the water collecting tank 10 and penetrates the outer wall 2 to communicate with a water storage tank 20.
Rainwater collected in the water collecting tank 10 is stored in the water tank 20 via the connection pipe 3. This water storage tank 20 is an underground tank provided underground. In addition, water tank 20
, A pump 21 is installed, and the pump 21 supplies water to an indoor bath 23 and a toilet 24 or an outdoor sprinkler 24.

The household rainwater storage device thus configured does not have a mountain-shaped roof, but has a rain gutter so that it can efficiently collect rainwater even in a building and use the rainwater effectively.

A household rainwater storage device B shown in FIG.
In the figure, a water collecting tank 10 is attached to a flat surface without forming a concave portion on an outer wall 2 of a building 1. The water tank 30 is embedded in the wall of the building 1. The household rainwater storage device B configured as described above does not need to form a concave portion for mounting the water collecting tank 10, and can be retrofitted to the wall of the building 1 already completed.

In the household rainwater storage device B, since the water tank 30 is provided on the wall of the building 1, there is no need to separately provide an underground tank, and the dead space of the building 1 is effectively used. Further, as an effective use method of the dead space of the building 1, it is also possible to form a water storage tank on a ceiling wall or under a floor, or on a veranda wall or a fence wall.

In the above-described embodiment, a case has been described where the household rainwater storage device is used for drinking water, such as a bath, a toilet, or water sprinkling. Of course, it can be used.

[0020]

As described above, the household rainwater storage device according to the present invention includes a rainwater collection tank attached to the outer wall of a building, and a water storage tank connected to the water collection tank and provided below the water collection tank. A tank, which is configured to open the water collecting tank during rainfall to collect rainwater, store the rainwater in the water storage tank, the water collecting tank is provided with a rotatable support shaft at a lower part, and an upper part is configured to be openable with a bellows. The cross section is formed in a substantially inverted triangular tank, and the water storage tank is an underground tank, so that it does not have a mountain-shaped roof, has a rain gutter, and efficiently collects rainwater even in a building,
It has an excellent effect that the rainwater can be used effectively. Further, since the water storage tank is provided on the wall of the building, an effect that the dead space of the building can be effectively used can be obtained. Further, a rain sensor is provided on the outer wall, and the rain sensor detects the rain and automatically opens the water collecting tank, so that it is not necessary to open the water collecting tank according to the rain, and the usability of the household rainwater storage device is improved. Is greatly improved.

[Brief description of the drawings]

FIG. 1 is a partially broken schematic view showing an embodiment of a household rainwater storage device according to the present invention.

FIG. 2 is a side view showing a water collecting device of the present invention.

FIG. 3 is a partially broken schematic view showing an embodiment of the household rainwater storage device of the present invention.

FIG. 4 is a schematic view showing a conventional household rainwater storage device.

[Explanation of symbols]

 Reference Signs List A home rainwater storage device B home rainwater storage device 1 building 2 outer wall 3 connection pipe 4 rain sensor 5 drive motor 6 switch 10 water collecting tank 11 support shaft 12 front plate 13 support column 14 rear plate 15 waterproof cloth 16 chain 20 water storage tank 21 Pump 22 Bath 23 Toilet 24 Sprinkler tap

Claims (5)

[Claims] 1. A rainwater collecting tank attached to an outer wall of a building, and a water tank connected to the water collecting tank and provided below the water collecting tank, wherein the water collecting tank is opened during rainfall to collect rainwater. And a household rainwater storage device, wherein the rainwater is stored in the water storage tank. 2. The water collecting tank according to claim 1, wherein a rotatable support shaft is provided at a lower part, an upper part is configured to be openable with bellows, and a cross section is a substantially inverted triangular tank. Household rainwater storage equipment. 3. The household rainwater storage device according to claim 1, wherein the water storage tank is an underground tank. 4. The household rainwater storage device according to claim 1, wherein the water storage tank is provided on a wall of the building. 5. The rainfall sensor is provided on the outer wall, and the rainfall sensor detects rainfall and automatically opens the water collecting tank. Household rainwater storage equipment.