JP2004245038A - Rainwater storing/discharging device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rainwater storing/discharging device easily attached/detached with a small installation space because of being directly attached to a rain gutter, manufactured at a low cost because of simple structure and capable of optionally taking in water through a drain cock while positively preventing rainwater from overflowing outside from a storage tank. <P>SOLUTION: This rainwater storing/discharging device is provided with the storage tank for storing rainwater; a storage tank cover provided at the upper face of the storage tank to cover it; a water supply pipe connected to the upper face of the storage tank cover to allow rainwater to flow into the storage tank; a drain pipe erected at the bottom face of the storage tank so that an upper end opening part is located in a position slightly off a position directly below the water supply pipe and slightly lower than the upper end of the storage tank; and the drain cock disposed at the lower end part of the storage tank. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

  TECHNICAL FIELD The present invention relates to a rainwater storage and discharge device that can be used by storing and discharging rainwater by being installed in an existing rain gutter.

Conventionally, rainwater storage and discharge devices have been installed in existing rain gutters for storing rainwater, and the stored rainwater is used for watering gardens, washing toilets, washing water or drinking water, and the like. I have.
(Patent Document 1) states, "Even if the amount of rainfall is large, the rainwater collecting device can surely maintain the rainwater storage amount in the water storage tank at a predetermined amount or less and prevent the rainwater from overflowing from the water storage tank. Is disclosed.
JP-A-10-88629

However, the conventional technique has the following problems.
In (1) (Patent Document 1), since the valve mechanism closes the inlet of the water supply pipe when the amount of water stored in the water storage tank reaches a predetermined amount, the rainwater is stored even when the amount of rainfall is extremely large. Although it is possible to prevent overflow from the tank to the outside, there is a problem that unless rainwater once stored is used, new rainwater is not supplied and old rainwater remains stored, which is unsanitary.
(2) In (Patent Literature 1), since the water supply pipe is inserted into and fixed to the opening of the rain gutter, the connection work is easy. However, since the water supply pipe is inserted into the rain gutter, the water flows in the rain gutter. There was a problem that the resistance of rainwater caused the clogging of trash in the rain gutter, and the water in the rainwater basin stuck and became a breeding place for mosquitoes.
(3) Further, in (Patent Document 1), since the water supply pipe inserted into the opening of the rain gutter is connected to the device, it is difficult to install the device near a wall, and a large installation space is required. Had.

  The present invention solves the above-mentioned conventional problems. Since it is directly attached to the rain gutter, the installation space is small, the attachment and detachment is simple, the structure is simple, the manufacturing can be performed at low cost, and the rainwater overflows from the water storage tank. Water can be arbitrarily taken out by a drain cock, and almost all the water stored during rainfall can be automatically and repeatedly flown to the rain gutters. An object of the present invention is to provide a rainwater storage and discharge device capable of keeping the inside of a rainwater basin clean.

In order to solve the above problems, a rainwater storage and discharge device of the present invention has the following configuration.
The rainwater storage and discharge device according to claim 1 of the present invention includes a water storage tank for storing rainwater, a water storage tank cover covered on an upper surface of the water storage tank, and a water storage tank connected to an upper surface of the water storage tank cover for storing the rainwater. A water supply pipe that flows into the tank, a drain pipe erected on the bottom surface of the water storage tank such that an upper end opening is displaced from immediately below the water supply pipe and slightly lower than an upper end of the water storage tank, and the water storage tank And a drain cock disposed at the lower end.
With this configuration, the following operation is provided.
(1) Since it can be installed simply by connecting a water supply pipe and a drain pipe to an existing rain gutter, it can be arranged near a wall of a building such as a house, and the installation space can be reduced.
(2) Since the upper end opening of the drainage pipe is located slightly lower than the upper end of the water storage tank, water can be stored up to the height of the drainage pipe, and the water level does not exceed the upper end of the drainage pipe. It is possible to reliably prevent overflow from the water storage tank to the outside, and to drain rainwater in excess of a required amount to the rain gutter, so that the rain gutter and the rainwater basin can be kept clean.
(3) Since the upper end of the drainage pipe is displaced from immediately below the water supply pipe, it is possible to prevent rainwater flowing from the water supply pipe from directly flowing into the upper end opening of the drainage pipe and being drained.
(4) Since a drain cock is provided at the lower end of the water storage tank, it is possible to store the required amount of rainwater in a separate container such as a plastic tank, a bucket, and a jar, or to connect a hose directly. Depending on the installation location, it can be used in emergencies such as disasters, and can be sprayed on gardens, greenhouses, street trees, etc.
(5) Since the water storage tank is sealed by the water storage tank cover, there is an insect repellent effect, and the inside of the water storage tank can be kept clean.
(6) By removing the water storage tank cover, the remaining water in the bath, washing drainage, tap water and disinfectant can be supplied to store water, and the water storage tank and rainwater basin can be cleaned and disinfected.
(7) Since the water storage tank cover is removable with respect to the water storage tank, it is possible to easily take out debris such as dead leaves accumulated in the water storage tank, and to easily attach and detach the rainwater storage and discharge device to the rain gutter. It can be removed to clean the water tank.
(8) Since it can be installed at a high place, water can be sprinkled directly from the drain cock using water pressure.

Here, it is desirable that the water storage tank is made of a transparent or translucent synthetic resin. This makes it possible to easily check the water storage amount by directly looking at the inside of the water storage tank, and easily change the capacity and shape of the water storage tank according to the use and the installation location. For general household use, the capacity of the water storage tank is about 10 L to 40 L. However, since the water storage tank is supported by providing a reinforcing bracket for fixing the water storage tank on the bottom surface of the water storage tank, the capacity of the water storage tank is increased. It can also be used as water for sprinkling and fire protection during sunshine. By providing the scale on the outer surface of the water storage tank, the disinfectant can be easily mixed in accordance with the amount of water stored in the water storage tank.
Further, a supply hole may be formed on the upper surface of the water storage tank cover. This makes it possible to easily supply remaining hot water, washing drainage, tap water and disinfectant from the supply hole to store water, and to wash and disinfect the water storage tank and rainwater basin without opening the water storage tank cover. By providing a cover that can be opened and closed in the supply hole, it is possible to prevent insects such as garbage and mosquitoes from entering the water storage tank in a normal state.

When installing a rainwater storage and discharge device on an existing rain gutter, the water supply pipe and the drainage pipe will be aligned, so the rainwater flowing from the water supply pipe and the water supply pipe and drainage water will not flow directly into the drainage pipe. It is necessary to shift the position of the upper end opening of the pipe, and it is desirable to incline the water supply pipe or the drain pipe or to bend the pipe.
Furthermore, since the drainage is performed from the upper end of the drainage pipe, if the end of the water supply pipe for flowing rainwater into the water storage tank is extended to the lower end of the water storage tank, the rainwater in the water storage tank can be replaced in the water storage state.
Further, the water supply pipe and the drain pipe may be connected by a tubular body or a net whose side surface is meshed. As a result, even if garbage such as dead leaves that have accumulated in the rain gutter flows in from the water supply pipe in the early stage of rainfall, rainwater containing only small garbage that passes through the mesh is stored, and large garbage is drained through the drainpipe as it is. Therefore, garbage taken into the water storage tank can be reduced. These connections are made by inserting a water supply pipe and a drain pipe inside the mesh tubular body or the net, and screwing a synthetic resin or metal band from above the mesh tubular body or the net, or using a spring to make the diameter. Is performed by fitting a metal band that expands and contracts.
In addition, the rainwater storage and drainage system can be easily installed if there is an existing rain gutter, so it can be installed at multiple locations and used for different purposes.In addition to watering the garden, it can be used for flushing toilets and washing water. can do. Further, not only rainwater but also laundry drainage, remaining hot water in a bath, and the like may be stored.

The rainwater storage and discharge device according to claim 2 of the present invention is a water storage tank for storing rainwater, a water storage tank cover covered on an upper surface of the water storage tank, and a water storage tank connected to an upper surface of the water storage tank cover for storing the rainwater. A water supply pipe for flowing into the tank, a drain hole disposed on the bottom surface of the water storage tank, a drain hole opening / closing mechanism that opens the drain hole when the amount of water stored in the water storage tank reaches a predetermined amount, and And a drain cock disposed at the lower end of the water storage tank.
With this configuration, the following operation is obtained in addition to the operation of the first aspect.
(1) It has a drain hole opening / closing mechanism that opens the drain hole when the amount of water in the water storage tank reaches a predetermined amount, so that the stored rainwater can be flushed automatically and the rainwater basin is cleaned. To prevent breeding of mosquitoes.
(2) A drain hole opening / closing mechanism that opens the drain hole when the amount of water stored in the water storage tank reaches a predetermined amount ensures that rainwater does not overflow from the water storage tank. It is possible to replace the rainwater in the water storage tank and keep the water storage tank, the rain gutter, and the rainwater basin clean.

Here, the drain hole opening / closing mechanism that opens the drain hole opens and closes a drain hole opening / closing valve that is rotatably disposed on the bottom of the water storage tank with a float that moves up and down according to the water level. There is a method in which a valve and a float are connected to each other by a shaft or a chain that is rotatably pivoted with respect to each. In addition, as a stopper mechanism that controls the rise of the float, a stopper release float that rotates with the rise of the water level and opens the float is provided, so that rainwater is held until the amount of water stored in the water storage tank reaches a predetermined amount can do. When the drain hole opening / closing valve and the float are connected by a chain, a protrusion is provided on the float or the drain hole opening / closing valve, and the projection comes into contact with the drain hole opening / closing valve or the float when the float descends, and the drain hole opening / closing valve rotates. By doing so, the drain hole can be reliably closed after draining.
Also, a rib is provided on the inner wall surface of the water storage tank as a guide to prevent horizontal movement and rotation of the float and smooth up and down movement, or a through hole is made in the float to stand on the bottom of the water storage tank. It is desirable to insert into a fixed guide shaft.

The invention according to claim 3 is the rainwater storage and discharge device according to claim 1 or 2, wherein an upper connection pipe that connects the water supply pipe and an upper rain gutter, and the drainage water that is disposed on a bottom surface of the water storage tank. And a lower connecting pipe connected to the lower rain gutter in communication with the lower end of the pipe.
With this configuration, the following operation is obtained in addition to the operation of the first or second aspect.
(1) Since there is an upper connecting pipe connecting the water supply pipe and the upper rain gutter, and a lower connecting pipe disposed on the bottom of the water storage tank and communicating with the lower end of the drainage pipe and connected to the lower rain gutter, the existing rain gutter is used. It can be easily installed simply by inserting the upper connecting pipe and the lower connecting pipe.
Here, the upper connection pipe connecting the water supply pipe and the upper rain gutter may be a separate member in which the water supply pipe and the upper rain gutter are inscribed. After the insertion, the bellows may be extended and fixed. At this time, the reason why the upper rain gutter is inscribed in the upper connection pipe is to prevent rainwater flowing from the upper rain gutter from leaking from the connection portion. In addition, it is desirable that a lower connecting pipe connected to the lower rain gutter is provided with a taper or a step, and at least a connecting portion is inserted into the lower rain gutter. Thereby, it is possible to prevent rainwater drained from the lower connection pipe from leaking from the connection portion. In addition, if the outer peripheral cross section of the connection part of the lower connection pipe is made substantially U-shaped, and the lower rain gutter is inserted into the substantially U-shaped opening, the lower connection pipe and the lower rain gutter can be more reliably connected. Can be fixed. In addition, by sealing the outer periphery of the connection portion with a sealing material such as silicone after connection, water leakage can be reliably prevented.

The invention described in claim 4 is the rainwater storage and discharge device according to claim 2 or 3, wherein the upper end opening is located at a position shifted from immediately below the water supply pipe and slightly lower than the upper end of the water storage tank. In this manner, a drain pipe is provided upright on the bottom surface of the water storage tank and communicates with the lower connection pipe.
With this configuration, the following operation is obtained in addition to the operation of the second or third aspect.
(1) Since a drain pipe is provided upright on the bottom surface of the water storage tank so that the upper end opening is displaced from immediately below the water supply pipe and slightly lower than the upper end of the water storage tank and communicates with the lower connection pipe, the drain hole opening and closing mechanism is provided. Even if a malfunction occurs and drainage from the drain hole becomes impossible, the water level of the rainwater in the water storage tank does not exceed the upper end of the drain pipe, and it is ensured that the rainwater overflows from the water storage tank. In addition, the rainwater exceeding the required amount is drained to the rain gutter, so that the rain gutter and the rainwater basin can be kept clean.
(2) Since the upper end of the drainage pipe is shifted from immediately below the water supply pipe, it is possible to prevent rainwater flowing from the water supply pipe from directly flowing into the upper end opening of the drainage pipe and being drained.
Here, a drainage pipe connection part for guiding and draining rainwater drained from the drainage hole and the drainage pipe to the lower connection pipe is formed on the bottom surface of the water storage tank. By connecting the lower connecting pipe to the lower rain gutter, it is possible to guide rainwater drained from the drain hole and the drain pipe to the lower connecting pipe via the drain pipe connecting portion, and to reliably connect to the lower rain gutter. Can be drained.

A rainwater storage and discharge device according to claim 5 of the present invention is the rainwater storage and discharge device according to any one of claims 2 to 4, wherein the drain hole opening / closing mechanism includes a base and the base. A drain hole opening / closing valve having a valve closing weight and a rotating shaft connected to the lower end of the base; and one end pivoted on the upper surface of the drain hole opening / closing valve and the other end pivoted by a sliding portion. Opening and closing shaft, a sliding guide plate having a sliding groove in which the sliding portion slides, and moving the sliding portion upward as the water level rises and pressing the valve closing weight after draining. A valve opening / closing float that closes the drain hole opening / closing valve, a float retainer that controls the elevation of the valve opening / closing float, and a stopper that is connected to a stopper that controls the elevation of the float retainer, and one end of which is provided on the inner wall of the upper end of the water storage tank. A pivot shaft, and the other end of the float shaft And it has a configuration in which and a stopper releasing the float to rotate together with the stopper Re increased while with the water level.
According to this configuration, in addition to the function of any one of claims 2 to 4, the following function is provided.
(1) The water level is increased until the amount of water stored in the water storage tank reaches a predetermined amount and the stopper is released by the stopper release float because the float retainer and the stopper for controlling the rise of the float retainer are provided. Even if the valve opening / closing float rises, the drain hole opening / closing valve remains closed, so that rainwater can be held in the water storage tank.
(2) The valve opening / closing float is lowered at the time of drainage, and the drainage hole opening / closing valve is rotated by pressing the valve closing weight, so that the drainage hole is surely closed when the water storage tank is almost empty. Water can be automatically restarted.

Here, a shaft supporting portion that supports a rotating shaft connected to the lower end of the base of the drain hole opening / closing valve is fixed to a side surface of the sliding guide plate or a plate extending or disposed perpendicular to the sliding guide plate. Is preferred. Thereby, the sliding guide plate, the sliding portion, the opening / closing shaft, and the drain hole opening / closing valve can be integrated and installed simply by placing them on the bottom surface of the water storage tank. If the ribs or grooves for guiding the sliding guide plate are formed on the inner wall of the water storage tank, the installation work can be facilitated.
The valve closing weight is necessary because the drain hole opening / closing valve does not float due to buoyancy, and is desirably formed of a synthetic resin which is easy to process and has high strength. In addition, the valve closing weight is preferably pressed against the bottom surface of the valve opening / closing float after draining to rotate the drain hole opening / closing valve, so that the contact surface with the valve opening / closing float preferably has an inclination, It is desirable to have a triangular shape such as a mountain shape.
Further, the drain hole opening / closing valve is preferably formed of a synthetic resin. Thereby, it is lightweight and can be easily processed. Further, it is necessary to securely close the drain hole and to have a structure that does not leak water, and it is desirable to provide a hemispherical member or packing formed of an elastic body on the bottom surface of the drain hole opening / closing valve. As the elastic body, hard rubber is preferable, and by making it hemispherical, the weight can be used to make the closing more reliable.
Further, the float for opening and closing the valve and the float for releasing the stopper are desirably formed of a synthetic resin which is easy to process and has strength. Both have a hollow structure to float on the water, but the valve opening / closing float needs the weight to push back the valve closing weight and close the drain hole opening / closing valve, and the bottom is thickened to lower the center of gravity. Is preferred. Further, it is desirable to provide unevenness on the contact surface of the valve opening / closing float with the sliding guide plate. This makes it possible to minimize the contact surface with the sliding guide plate and to smoothly slide the float for opening and closing the valve up and down.
The float shaft provided with the stopper and the stopper release float is pivoted on the inner wall of the upper end of the water storage tank, but may be pivoted on the upper surface inside the water storage tank cover. Thereby, attachment and removal can be performed integrally with the water storage tank cover, and the assembling work can be facilitated.

The rainwater storage and discharge device according to claim 6 of the present invention is the rainwater storage and discharge device according to claim 5, wherein the drain hole opening / closing mechanism has a manual opening / closing lever.
With this configuration, the following operation is obtained in addition to the operation of the fifth aspect.
(1) Since the drain hole opening / closing mechanism can be opened / closed manually, even if the amount of water stored in the water storage tank has not reached a predetermined amount, the drain hole is manually opened to discharge water at an arbitrary time. be able to.
(2) The drain hole opening and closing mechanism can be opened and closed by manual operation, and can be forcibly fixed in a state where the drain hole is closed, so that drainage is not performed even if the amount of water stored in the water storage tank reaches a predetermined amount. In addition, rainwater can be retained in the water storage tank.
Here, the manual opening / closing lever opens and closes the drain hole by rotating a float shaft or a stopper connected to the stopper releasing float, and the float shaft or the stopper is provided at the opening of the substantially U-shaped arm portion. And a structure in which a substantially L-shaped arm portion is brought into contact with a float shaft or a stopper. The manual opening / closing lever may be either a slide type or a rotary type.The drain shaft is opened by rotating the float shaft or stopper at the arm, or the drain shaft is closed by pressing and fixing the float shaft or stopper at the arm. Can be

The rainwater storage and discharge device according to claim 7 of the present invention is the rainwater storage and discharge device according to any one of claims 2 to 4, wherein the drain hole opening / closing mechanism is formed in a substantially spherical shape. A drain hole opening / closing floating body for opening / closing a drain hole, a float portion connected to the drain hole opening / closing floating body and moving up and down with a change in water level, a float portion guide portion for guiding the float portion to move up and down, and the water supply pipe A storage part for storing rainwater flowing from the storage part, a storage part for controlling a float part having a water level adjustment opening formed in the storage part and allowing a certain amount or more of rainwater in the storage part to flow out to the water storage tank, and the float part control Storage means for rotatably supporting the storage part above the float part.
According to this configuration, in addition to the function of any one of claims 2 to 4, the following function is provided.
(1) Since the reservoir for controlling the float has a reservoir for storing rainwater flowing from the water supply pipe, even if the water level of the rainwater flowing out from the water level adjusting opening of the reservoir to the water tank rises, the float is controlled. With only the buoyancy, the float control storage cannot be rotated, and the float becomes stationary, and a certain amount of rainwater can be stored in the water storage tank.
(2) A certain amount of rainwater is stored in the water storage tank, and buoyancy acts on the float control storage, so that the float starts to rise and the bottom is pressed by the float to control the float. Rotates while draining the rainwater in the reservoir into the water storage tank, and the float rises further, so that the drainage opening / closing floating body connected to the float overcomes the backwater pressure and rises, opening the drainage and opening the drainage tank. Rainwater stored inside can be drained at once.
(3) Since the water level in the water storage tank decreases and the drain hole can be kept open until the drain hole opening / closing floating body closes the drain hole, almost all of the rainwater stored in the water storage tank is drained. be able to.
(4) Since the float portion guide portion is provided, the float portion can be smoothly raised as the water level rises, and the drain opening / closing floating body connected to the float portion can be reliably pulled up, and the drain hole is opened. Drainage can be performed.
(5) Since the storage portion support means rotatably supports the storage portion for controlling the float portion above the float portion, the storage portion for controlling the float portion can be rotated with the vertical movement of the float portion. The operation of water storage and drainage in the water storage tank can be automatically and repeatedly performed.

Here, the drain hole opening / closing floating body is formed of an elastic synthetic resin, rubber, or the like. The drain hole opening / closing body floats on the water by having a hollow structure, but when the drain hole is closed, the backwater pressure is larger than the buoyancy applied to the drain hole opening / closing body, and the initial stage of storing water in the water storage tank Therefore, the drain hole opening / closing floating body does not rise and the drain hole is not opened.
When the water level in the water storage tank reaches a certain level and the float connected to the drain hole opening / closing body rises, the drain hole can be opened by overcoming the backwater pressure acting on the drain hole opening / closing body. In addition, the drainage opening / closing floating body floats on the water when draining, so that the water level in the water storage tank drops, and the drainage can be drained until the drainage hole opening / closing floating body closes the drainage hole. Can drain rainwater.
The drain hole opening / closing floating body and the float portion are connected by a connecting member such as a synthetic resin or metal chain, wire, or rope. A non-stretchable connecting member is preferably used. Thereby, the drain hole opening / closing floating body can be reliably pulled up at the float portion. When the connecting member is made of metal, it is desirable to use a corrosion-resistant material or to perform a corrosion-resistant treatment. Thereby, rust can be prevented from being generated in the connecting member, and the water storage tank and the rainwater stored in the water storage tank can be kept clean.

The float portion is formed of a rigid synthetic resin in a hollow shape. A substantially arc-shaped contact part is formed on the upper surface of the float part. As a result, as the float rises, the bottom surface of the float control storage can be smoothly moved along the arc surface of the contact portion, so that the float control storage rotates smoothly. And the vertical movement of the float can be stabilized.
By contacting the float part guide part back and forth and left and right of the float part, horizontal movement and rotation of the float part can be prevented, and up and down movement of the float part can be made smooth. The float section guide section is formed by arranging a rib on the inner wall surface of the water storage tank, or erecting and fixing a frame body conforming to the outer shape of the float section to the bottom surface of the water storage tank. By making only the outer peripheral corners of the float portion come into contact with the float portion guide portion, the contact area can be reduced and the float portion can be reliably guided without obstructing the movement of the float portion. When the float guide is formed of a frame, it can be manufactured separately from the water storage tank, can be easily attached to and detached from the water storage tank, can be easily assembled, and has excellent maintainability.

A float holding portion is formed in the float guide to abut on the bottom of the float to hold the float at a predetermined height. Thereby, when the water level in the water storage tank decreases, the float portion can be prevented from falling below a predetermined height, and only the drain hole opening / closing floating body connected to the float portion falls with the decrease in the water level, When almost all the rainwater in the water storage tank is drained, the drain hole can be closed by the drain hole opening / closing floating body.
Also, in the case where a stopper portion is formed in the float portion guide portion to contact the upper portion of the float portion, when the water level in the water storage tank rises, it is possible to reliably prevent the float portion from rising above a predetermined height, It is possible to prevent the float portion and the storage portion for controlling the float portion from being damaged due to contact with the water storage tank cover, and to stabilize the operation of the float portion and the storage portion for controlling the float portion.
When the float guide is formed by a frame different from the water storage tank, installation stability can be improved by providing the bottom plate. At this time, a communication hole having a larger diameter than the drain hole is formed in the bottom plate portion. Thereby, the water in the water storage tank can be guided from the communication hole to the drain hole and drained, and the drain opening / closing floating body can be directly fitted to the drain hole to open and close the drain hole. it can. Alternatively, the diameter of the communication hole may be smaller than that of the drain hole, and a cylindrical fitting portion may be formed on the outer periphery of the communication hole so as to fit into the drain hole. This makes it possible to easily position the float portion guide portion, and it is excellent in assembling workability. At this time, the drain hole can be opened and closed by fitting the drain hole opening and closing floating body into the communication hole. By arranging the packing between the outer periphery of the fitting portion and the inner periphery of the drain hole, it is possible to prevent the water in the water storage tank from leaking from the gap between the fitting portion and the drain hole, and to open and close the drain hole. Open / close of the floating body can reliably switch between water storage and water discharge. The float guide may be detachable from the water storage tank, or may be fixed by bonding or the like.

The float control storage has a storage having an open upper surface for storing rainwater flowing from a water supply pipe. The water level adjustment opening is formed in a notch shape on the outer peripheral wall of the storage portion or a hole is formed at a predetermined height in order to allow a certain amount or more of rainwater to flow into the water storage tank. The height of the water level adjustment opening is determined by the balance of the buoyancy acting on the float and the float control reservoir and the amount of water stored in the water storage tank.
The storage part support means for rotatably supporting the storage part for controlling the float part can be formed in the water storage tank or the water storage tank cover, or can be connected to the float part guide part. When the storage section support means is formed on the water storage tank cover, the float section control storage section can be handled integrally with the water storage tank cover, and by simply covering the water storage tank cover, the float section control storage section can be used. Can be installed. When the reservoir support means is connected to the float guide that is formed independently of the water tank, all of the drain hole opening / closing mechanism can be handled as a single unit. In addition, maintainability can be improved.

  The storage section support means supports both sides and the bottom of the float section control storage section by means of an outer periphery support section formed in a substantially U-shaped cross section, and both sides of the float section control storage section on both sides of the outer periphery support section. The one that is rotatably supported is preferably used. In order to rotatably support the float control storage, the rotation support holes formed on both sides of the outer peripheral support support the rotation support protruding on both sides of the float control storage. Conversely, a rotation support portion may be protruded on both sides of the outer peripheral support portion, and a rotation support hole that does not penetrate may be formed on both sides of the float control storage portion. It is preferable that the diameter of the rotation support hole be larger than the outer diameter of the rotation support portion. As a result, since there is play between the rotation support hole and the rotation support portion, the movement of the float control storage portion in the vertical and horizontal directions is not restricted, and the occurrence of malfunction during rotation can be prevented. Can be reduced. In particular, when the rotation support hole is formed in a vertically long hole shape or a U-shape, the rotation operation can be started smoothly without hindering the rise of the float control storage portion due to buoyancy.

The rainwater storage and drainage device according to claim 8 of the present invention is the rainwater storage and discharge device according to claim 7, wherein the storage portion support means is provided at a predetermined distance from an upper end of an end of the float control storage portion. A structure provided with a storage part rotation suppressing member that rotates the float part control storage part by contacting the upper end of the end part of the float part control storage part that is arranged and floats with the rise of the water level. Have.
With this configuration, the following operation is obtained in addition to the operation of the seventh aspect.
(1) Since the storage unit has a storage unit rotation suppressing member disposed at a predetermined distance from the upper end of the storage unit for float control, the upper end of the storage unit for float control that floats as the water level rises. The storage portion rotation suppressing member can be brought into contact with the storage portion, and the bottom of the storage portion pressed by the rise of the float portion is rotated so that the storage portion for controlling the float portion is used as the fulcrum of the storage portion rotation suppression member. The rainwater stored in the storage portion of the storage portion for controlling the float portion can flow out into the water storage tank, and can be prepared for the next water storage operation.
(2) Since the storage portion rotation suppressing member is disposed at a predetermined distance from the upper end of the end portion of the float portion control storage portion, there is a degree of freedom in the operation of the float portion control storage portion. Hardly breaks.
(3) Since the storage portion rotation suppressing member is arranged at a predetermined interval from the upper end of the end portion of the float portion control storage portion, the float portion control storage portion can be attached / detached in a short time, and can be assembled or replaced. Can be easily performed.

Here, the storage section rotation suppressing member is disposed above an end of the float section control storage section that is apart from the position of the float section that presses the bottom surface of the float section control storage section. Thus, the float control storage can be smoothly and reliably rotated.
The storage portion support means is provided with an outer peripheral support portion which is formed to have a substantially U-shaped cross section and supports both sides and the bottom portion of the storage portion for controlling the float portion in the same manner as described above. Further, a rotation support portion is provided on both sides of the float portion control storage portion, and a notch-shaped rotation support hole having a predetermined width and depth is provided on both sides of the outer peripheral support portion so as to surround the rotation support portion. In this case, the movement of the float control storage in the longitudinal direction can be restricted by the rotation support portion and the rotation support hole. Thus, the float control storage can be rotated in a state where the storage rotation control member is securely brought into contact with the end of the float control storage.

A rainwater storage and discharge device according to claim 9 of the present invention is the rainwater storage and discharge device according to any one of claims 1 to 8, wherein the water supply pipe has one end pivotally connected to the water supply pipe. And an opening / closing means for opening the insect-proof cover by inflow of rainwater.
With this configuration, the following operation is provided in addition to the operation of any one of the first to eighth aspects.
(1) Since the water supply pipe has the insect repellent lid that opens when the rainwater flows in, the water storage tank is in a closed state except when the rainwater flows in, so that the propagation of insects and the like can be prevented.
Here, as means for opening and closing the insect-proof cover, for example, a method of providing a torsion coil spring on the pivot of the insect-proof lid, or connecting the end of the insect-proof lid facing the pivot with a water supply pipe with a helix spring, etc. Is mentioned. Thus, the water supply pipe can be automatically closed in the normal state, and the insect-controlling lid can be opened when rainwater flows.

A rainwater storage and discharge device according to claim 10 of the present invention is the rainwater storage and discharge device according to any one of claims 1 to 9, wherein the rainwater storage and discharge device is provided at a position slightly lower than an upper end of the water storage tank. And an overflow drain pipe.
With this configuration, the following operation is provided in addition to the operation of any one of the first to ninth aspects.
(1) By arranging the overflow drain pipe at a position slightly lower than the upper end of the water storage tank, if the drain hole opening / closing mechanism fails or the drain hole, drain pipe, lower rain gutter, etc. become clogged, etc. Also, it is possible to reliably drain rainwater exceeding a predetermined amount.

As described above, according to the rainwater storage and discharge device of the present invention, the following advantageous effects can be obtained.
According to the first aspect of the present invention, the following effects are provided.
(1) Since it can be installed simply by connecting a water supply pipe and a drain pipe to an existing rain gutter, it can be placed near the wall of a building such as a house, and the installation space can be reduced. A water storage and discharge device can be provided.
(2) Since the upper end opening of the drainage pipe is located slightly lower than the upper end of the water storage tank, water can be stored up to the height of the drainage pipe, and the water level does not exceed the upper end of the drainage pipe. It is possible to reliably prevent overflow from the water storage tank to the outside, and to drain rainwater in excess of the required amount to the rain gutter, and to keep the rain gutter and rainwater basin clean and sanitary and reliable. An excellent rain water storage and discharge device can be provided.
(3) Since the upper end of the drain pipe is displaced from immediately below the feed pipe, rainwater flowing from the feed pipe can be prevented from flowing directly into the upper end opening of the drain pipe to be drained, and water can be reliably stored. It is possible to provide a rainwater storage and discharge device with excellent reliability.
(4) Since a drain cock is provided at the lower end of the water storage tank, the required amount of rainwater can be stored in a separate container such as a plastic tank or a bucket, or a hose can be directly connected. It is possible to provide a rainwater storage / spouting device excellent in convenience and versatility, which can be used in an emergency such as a disaster depending on the location, and can be sprayed on gardens, greenhouses, and street trees.
(5) Since the water storage tank is hermetically sealed by the water storage tank cover, it is possible to provide a rainwater storage and discharge device which has an insect repellent effect, can keep the inside of the water storage tank clean, and has excellent hygiene and reliability.
(6) Hygienic, maintainable, and versatile that removes the water storage tank cover and supplies remaining hot water from the bath, washing drainage, tap water and disinfectant to store water, and cleans and disinfects water storage tanks and rainwater basins. It is possible to provide an excellent rainwater storage and discharge device.
(7) Since the water storage tank cover is removable with respect to the water storage tank, it is possible to easily take out debris such as dead leaves accumulated in the water storage tank, and to easily attach and detach the rainwater storage and discharge device to the rain gutter. It is possible to provide a rainwater storage and discharge device excellent in reliability and maintainability that can be detached to clean the inside of the water storage tank.
(8) Since it can be installed at a high place, it is possible to provide a rainwater storage and discharge device excellent in versatility and convenience, which can spray water directly from a drain cock using water pressure.

According to the second aspect of the present invention, the following effects are obtained in addition to the effects of the first aspect.
(1) It has a drain hole opening / closing mechanism that opens the drain hole when the amount of water in the water storage tank reaches a predetermined amount, so that the stored rainwater can be flushed automatically and the rainwater basin is cleaned. It is possible to provide a sanitary and highly functional rainwater storage and discharge device capable of preventing breeding of mosquitoes and the like while keeping the water temperature.
(2) A drain hole opening / closing mechanism that opens the drain hole when the amount of water stored in the water storage tank reaches a predetermined amount ensures that rainwater does not overflow from the water storage tank. In addition, it is possible to provide a sanitary and highly reliable rainwater storage and discharge device capable of replacing rainwater in the water storage tank and keeping the water storage tank, the rain gutter, and the rainwater basin clean.

According to the third aspect of the invention, the following effects are obtained in addition to the effects of the first or second aspect.
(1) Since there is an upper connecting pipe connecting the water supply pipe and the upper rain gutter, and a lower connecting pipe disposed on the bottom of the water storage tank and communicating with the lower end of the drainage pipe and connected to the lower rain gutter, the existing rain gutter is used. A rainwater storage and drainage device that can be easily installed simply by inserting the upper connecting pipe and the lower connecting pipe, does not require special parts or processing, and is excellent in installation workability. can do.

According to the fourth aspect of the invention, the following effect is obtained in addition to the effect of the second or third aspect.
(1) Since a drain pipe is provided upright on the bottom surface of the water storage tank so that the upper end opening is displaced from immediately below the water supply pipe and slightly lower than the upper end of the water storage tank and communicates with the lower connection pipe, the drain hole opening and closing mechanism is provided. Even if a malfunction occurs and drainage from the drain hole becomes impossible, the water level of the rainwater in the water storage tank does not exceed the upper end of the drain pipe, and it is ensured that the rainwater overflows from the water storage tank. To provide a sanitary and highly reliable rainwater storage and drainage device that can prevent rainfall and drain rainwater in excess of a required amount to a rain gutter, so that the rain gutter and rainwater basin can be kept clean. Can be.
(2) Highly reliable rainwater that can prevent rainwater that flows in from the water supply pipe from flowing directly into the upper end opening of the drainage pipe and being drained because the upper end of the drainage pipe is shifted from immediately below the water supply pipe A water storage and discharge device can be provided.

According to the fifth aspect of the present invention, the following effect is obtained in addition to the effect of any one of the second to fourth aspects.
(1) The water level is increased until the amount of water stored in the water storage tank reaches a predetermined amount and the stopper is released by the stopper release float because the float retainer and the stopper for controlling the rise of the float retainer are provided. Even if the valve opening / closing float rises, the drain hole opening / closing valve remains closed, so that it is possible to provide a rainwater storage / water discharge device excellent in operability and reliability capable of holding rainwater in the water storage tank.
(2) The valve opening / closing float is lowered at the time of drainage, and the drainage hole opening / closing valve is rotated by pressing the valve closing weight, so that the drainage hole is surely closed when the water storage tank is almost empty. It is possible to provide a rainwater storage and discharge device excellent in operability and reliability in which water can be automatically restarted while being able to restart water storage.

According to the invention of claim 6, in addition to the effect of claim 5, the following effect is obtained.
(1) Since the drain hole opening / closing mechanism can be opened / closed manually, even if the amount of water stored in the water storage tank has not reached a predetermined amount, the drain hole is manually opened to discharge water at an arbitrary time. It is possible to provide a rainwater storage and discharge device excellent in operability and general versatility.
(2) The drain hole opening and closing mechanism can be opened and closed by manual operation, and can be forcibly fixed in a state where the drain hole is closed, so that drainage is not performed even if the amount of water stored in the water storage tank reaches a predetermined amount. In addition, it is possible to provide a rainwater storage and discharge device excellent in versatility and reliability that can hold rainwater in a water storage tank.

According to the invention of claim 7, in addition to the effect of any one of claims 2 to 4, the following effect is obtained.
(1) Since the reservoir for controlling the float has a reservoir for storing rainwater flowing from the water supply pipe, even if the water level of the rainwater flowing out from the water level adjusting opening of the reservoir to the water tank rises, the float is controlled. With only the buoyancy of the float part, the storage part for float part control does not rotate, the float part becomes stationary, and it is possible to store a certain amount of rainwater in the water storage tank. A rainwater storage and discharge device can be provided.
(2) A certain amount of rainwater is stored in the water storage tank, and buoyancy acts on the float control storage, so that the float starts to rise and the bottom is pressed by the float to control the float. Rotates while draining the rainwater in the reservoir into the water storage tank, and the float rises further, so that the drainage opening / closing floating body connected to the float overcomes the backwater pressure and rises, opening the drainage and opening the drainage tank. Sanitary and reliable rainwater that can drain rainwater that has been stored inside at once, drain excess rainwater to the rain gutter, and keep the rain gutter and rainwater basin clean. A water storage and discharge device can be provided.
(3) Since the water level in the water storage tank decreases and the drain hole can be kept open until the drain hole opening / closing floating body closes the drain hole, almost all of the rainwater stored in the water storage tank is drained. This makes it possible to provide a sanitary and highly functional rainwater storage and discharge device that can keep the rainwater basin clean and prevent breeding of mosquitoes and the like.
(4) Since the float portion guide portion is provided, the float portion can be smoothly raised as the water level rises, and the drain opening / closing floating body connected to the float portion can be reliably pulled up, and the drain hole is opened. Thus, it is possible to provide a highly reliable rainwater storage and discharge device capable of reliably draining water.
(5) Since the storage portion support means rotatably supports the storage portion for controlling the float portion above the float portion, the storage portion for controlling the float portion can be rotated with the vertical movement of the float portion. In addition, it is possible to provide a rainwater storage and discharge device excellent in functionality and reliability in which the operation of storing and draining water in the water storage tank can be automatically and repeatedly performed.

According to the eighth aspect of the present invention, the following effect is obtained in addition to the effect of the seventh aspect.
(1) Since the storage unit has a storage unit rotation suppressing member disposed at a predetermined distance from the upper end of the storage unit for float control, the upper end of the storage unit for float control that floats as the water level rises. The storage portion rotation suppressing member can be brought into contact with the storage portion, and the bottom of the storage portion pressed by the rise of the float portion is rotated so that the storage portion for controlling the float portion is used as the fulcrum of the storage portion rotation suppression member. Rainwater stored in the storage part of the float part control storage part can flow out into the water storage tank, and can be prepared for the next water storage operation. A water discharge device can be provided.
(2) Since the storage portion rotation suppressing member is disposed at a predetermined distance from the upper end of the end portion of the float portion control storage portion, there is a degree of freedom in the operation of the float portion control storage portion. It is possible to provide a rainwater storage and discharge device which is excellent in reliability and durability in which breakage is unlikely to occur.
(3) Since the storage portion rotation suppressing member is disposed at a predetermined interval from the upper end of the float portion control storage portion, the float portion control storage portion can be detached from the storage portion support means in a short time. Thus, it is possible to provide a rainwater storage and discharge device which is easy to assemble and replace and has excellent productivity and maintainability.

According to the ninth aspect of the present invention, the following effect is obtained in addition to the effect of any one of the first to eighth aspects.
(1) Since the water supply pipe has an insect repellent lid that opens when rainwater flows in, the water storage tank is closed except when rainwater flows in, which is hygienic and highly reliable with insect repellent effect. A rainwater storage and discharge device can be provided.

According to the tenth aspect, in addition to the effects of any one of the first to ninth aspects, the following effects are provided.
(1) By arranging the overflow drain pipe at a position slightly lower than the upper end of the water storage tank, if the drain hole opening / closing mechanism fails or the drain hole, drain pipe, lower rain gutter, etc. become clogged, etc. In addition, it is possible to provide a highly reliable rainwater storage and discharge device that can reliably drain rainwater exceeding a predetermined amount.

(Embodiment 1)
The rainwater storage and discharge device according to Embodiment 1 of the present invention will be described below with reference to the drawings.
FIG. 1 is a partially broken whole perspective view of a rainwater storage and discharge system according to Embodiment 1 of the present invention.
In FIG. 1, reference numeral 1 denotes a rainwater storage and discharge device according to the first embodiment of the present invention, and 2 denotes a translucent water storage tank formed in a rectangular, elliptical, or circular shape with an upper surface opening and having an internal volume of 10 L to 40 L. Reference numeral 2a denotes a bottom surface of the water storage tank 2, 2c denotes a water level scale, 3 denotes a water tank cover covered on the upper surface of the water storage tank 2, and 4 denotes a water tank that is fitted on the upper surface of the water storage tank cover 3 and allows rainwater to flow into the water storage tank 2. A water supply pipe 5 is a supply hole cover for closing a supply hole 5 a formed in the upper surface of the water storage tank cover 3, and 6 is a water supply tank 2 having an upper end opening 6 a positioned slightly lower than an upper end in the water storage tank 2. A drain pipe erected on the bottom surface 2a is inclined, 6b is a net body connecting the water supply pipe 4 and the drain pipe 6, and 6c and 6d are metal screws for fixing the net body 6b to the water supply pipe 4 and the drain pipe 6. Stop type fixed band, 7 is a water storage tank Lower portion disposed in the drainage cock, 8 is a lower connection pipe to the lower end communicating with the water storage tank 2 is disposed on the bottom surface 2a drain pipe 6.

Regarding the rainwater storage and discharge device of the first embodiment configured as described above, a method of installing the same in the rain gutter will be described below.
2 (a) and 2 (b) are front views showing an installation method of the rainwater storage and discharge device according to Embodiment 1 of the present invention, and FIG. 3 is an installation state of the rainwater storage and discharge device according to Embodiment 1 of the present invention. FIG.
In FIG. 2, reference numeral 8a denotes a fitting groove formed at the lower end of the lower connecting pipe 8, reference numeral 9 denotes an upper connecting pipe connecting the water supply pipe 4 and the upper rain gutter 20a, and reference numeral 20b denotes a lower connecting pipe 8 and the fitting groove. 8a is a lower rain gutter whose upper end is connected.
When installing the rain water storage and discharge device 1 on the existing rain gutter 20, after cutting the rain gutter 20 about 10 mm longer than the total length A of the rain water storage and discharge device 1, the upper connecting pipe 9 is connected to the upper rain gutter 20a. The lower connecting pipe 8 connected to the bottom of the water storage tank 2 is inserted and connected to the lower rain gutter 20b, and the upper connecting pipe 9 is shifted downward and connected to the water supply pipe 4 on the upper surface of the water storage tank 2. And fix it with waterproof tape.
The opening of the water supply pipe 4 may be larger than the outer shape of the upper rain gutter 20a, and the upper rain gutter 20a may be inserted into the water supply pipe 4.
In FIG. 3, a support bracket 25 for reinforcement is provided on the bottom surface of the water storage tank 2, and the lower end of the lower rain gutter 20 b is connected to the rain water basin 50.

Next, the operation of the rainwater storage and discharge device according to the first embodiment of the present invention will be described with reference to FIG.
In FIG. 1, rainwater is stored in the water storage tank 2, but since the upper end opening 6 a of the drain pipe 6 is set up on the bottom surface 2 a of the water storage tank 2 so as to be slightly lower than the upper end of the water storage tank 2. In addition, the water level does not exceed the upper end opening 6a of the drain pipe 6, and rainwater is reliably prevented from overflowing from the water storage tank 2.
At this time, by inclining the drainage pipe 6, rainwater flowing from the water supply pipe 4 is prevented from flowing directly into the upper end opening 6 a of the drainage pipe 6 and being drained. Further, by connecting the water supply pipe 4 and the drain pipe 6 with the net body 6b, it is possible to prevent large trash such as dead leaves from being taken into the water storage tank.
Further, the supply hole 5a formed in the water storage tank cover 3 takes off the supply hole cover 5 and supplies remaining hot water, tap water, and disinfectant in the bath to store water, and cleans and disinfects the water storage tank and rainwater basin. You can do it.

As described above, the rainwater storage and discharge device according to Embodiment 1 has the following functions.
(1) Since the water supply pipe 4 and the lower connection pipe 8 can be installed in the existing rain gutter 20 simply by inserting the same, it can be arranged near a wall of a building such as a house, and the installation space can be reduced.
(2) Since the upper end opening 6a of the drain pipe 6 is disposed so as to be slightly lower than the upper end of the water storage tank 2, water can be stored up to the height of the drain pipe 6, and the water level exceeds the upper end of the drain pipe 6. Without rainwater, it is possible to reliably prevent rainwater from overflowing out of the water storage tank 2 and to drain rainwater exceeding a required amount to the rain gutter 20, so that the rain gutter 20 and the rainwater basin 50 are kept clean. be able to.
(3) Since the upper end of the drain pipe 6 is displaced from immediately below the water supply pipe 4, it is possible to prevent rainwater flowing from the water supply pipe 4 from directly flowing into the upper end opening 6a of the drain pipe 6 and being drained.
(4) By disposing the drain cock 7 at the lower end of the water storage tank 2, it is possible to store the required amount of rainwater in a separate container such as a plastic tank, a bucket, a jar, or to directly connect a hose or the like. It can be used in emergencies such as disasters, depending on the installation location, and can be sprayed on gardens, greenhouses, and street trees.
(5) Since the water storage tank 2 is hermetically sealed by the water storage tank cover 3, there is an insect repellent effect and the inside of the water storage tank 2 can be kept clean.
(6) Since the supply hole 5a is provided on the upper surface of the water storage tank cover 3, the remaining hot water in the bath, washing drainage, tap water and disinfectant are supplied from the supply hole 5a to store water, and the water storage tank 2 and the rainwater basin are supplied. 50 can be washed and disinfected.
(7) Since it can be installed at a high place, it is possible to spray water directly from the drain cock 7 using water pressure.
(8) By connecting the water supply pipe 4 and the drain pipe 6 with the net body 6b, it is possible to prevent large trash such as dead leaves from being taken into the water storage tank 2.
(9) Since the water storage tank cover 3 is detachable with respect to the water storage tank 2, it is easy to take out debris such as dead leaves accumulated in the water storage tank 2, and to easily attach the rainwater storage and discharge device 1 to the rain gutter 20. The water tank 2 can be removed to clean the inside of the water storage tank 2.
(10) By providing the reinforcing bracket 25 for fixing the water storage tank 2 on the bottom surface 2a of the water storage tank 2, it is safe even if the capacity of the water storage tank 2 is increased, and large-scale such as agricultural, industrial or emergency use. It can be used as a thing.
(11) By providing the water level scale 2c on the outer surface of the translucent water storage tank 2, the amount of water stored in the water storage tank 2 can be viewed directly, and the disinfecting liquid can be easily mixed in accordance with the amount of water storage.

(Embodiment 2)
A rainwater storage and discharge device according to Embodiment 2 of the present invention will be described below with reference to the drawings.
FIG. 4 is a partially broken whole perspective view of a rainwater storage and discharge device according to Embodiment 2 of the present invention.
The same components as those in the first embodiment are denoted by the same reference numerals, and the description is omitted.
In FIG. 4, reference numeral 1a denotes a rainwater storage and discharge device according to the second embodiment of the present invention, and 4a is connected to a lower end of the water supply pipe 4 by a torsion coil spring (not shown) and covers the lower end of the water supply pipe 4. An insect-proof lid, 6 'is a drain pipe erected on the bottom surface 2a of the water storage tank 2 at a position shifted from immediately below the water supply pipe 4, 6a' is an upper end opening of the drain pipe 6 ', and 8b is formed on the bottom face 2a. A drain hole 8c is a drain pipe connecting portion for guiding and draining rainwater drained from the drain pipe 6 'and the drain hole 8b to the lower connecting pipe 8, 10 is a drain hole opening / closing valve for opening and closing the drain hole 8b, and 10b is a drain hole. A valve closing weight 10c disposed on the base 10a of the on-off valve 10 is a rotating shaft connected to the lower end of the base 10a, 10d is a shaft supporting portion fixed to the bottom surface 2a and supporting the rotating shaft 10c, 10e is an inclined portion of the valve closing weight 10b, and 11 is one end of which is pivotally mounted on the upper surface of the drain hole opening / closing valve 10. An opening / closing shaft pivotally pivoted at the other end to the pivot portion 12a; 12 is a sliding portion having a pivot portion 12a and a sliding plate 12b formed substantially in an L shape on the opposite side of the pivot portion 12a; Is a sliding guide plate erected on the bottom surface 2a, 13a is a sliding groove formed on the sliding guide plate 13 and slidably fitted to the pivot 12a of the sliding portion 12, and 14 is a sliding guide plate. 13, a valve opening / closing float arranged so as to abut on a sliding plate 12b on the back side, 14a is a float bottom surface of the valve opening / closing float 14, and 15 faces the sliding guide plate 13 via the valve opening / closing float 14. Float press base 15a erected on the bottom surface 2a, a float press portion 15b rotatably connected to the float press base 15a via a pivot portion 15c, and a pivot press portion 15e pivotally connected to the float press portion 15b. Possible stopper pusher A float retainer 16 having a portion 15d, a substantially L-shaped stopper 17 having a shaft 16a connected to the float shaft 17a and a pressing portion 16b formed by bending the end of the shaft 16a; Is a float for releasing a stopper disposed on the float shaft 17a, 18 is a stopper pivot portion which is disposed on the upper portion of the side wall 2b and pivotally moves the float shaft 17a, and 19 has an inclined surface 19b and a shaft pressing portion 19c. The lever is provided with a substantially U-shaped arm 19a.
The base 10d, the sliding guide plate 13, the valve opening / closing float 14, and the float holding base 15a are not provided on the bottom surface 2a, but are provided with a base plate (not shown). The guide plate 13 and the float holding base 15a may be erected and fixed. Thereby, it can be installed simply by placing it on the bottom surface 2a of the water storage tank 2. Further, the stopper pivot 18 that pivotally pivots the float shaft 17a may be disposed and fixed on the upper surface of the inner wall of the water storage tank cover 3 instead of being disposed above the side wall 2b. Thus, the stopper releasing float 17 and the stopper 16 can be attached and detached together with the water storage tank cover 3 in a state where the float shaft 17a and the arm portion 19a are engaged, and the assembling can be easily performed.

The operation of the rainwater storage and drainage device according to Embodiment 2 of the present invention configured as described above will be described below.
In FIG. 4, the insect-proof cover 4a is pivotally connected at one end to the water supply pipe 4, and the water supply pipe 4 is closed by a torsion coil spring (not shown) in a normal state. It automatically opens to take in rainwater into the water storage tank 2 and, when the weather is fine, closes the water supply pipe 4 to prevent mosquitoes and other insects from entering the water storage tank 2 to generate bow hula and the like.
Rain water is stored in the water storage tank 2 and the water level increases, and the valve opening / closing float 14 starts to rise. However, since the tip of the stopper pressing portion 15 d of the float retainer 15 is pressed by the pressing portion 16 b of the stopper 16, the valve opening / closing is stopped. The use float 14 is blocked from ascending in a state of contact with the float pressing portion 15b. When the water level further increases and the float 17 for releasing the stopper rises, the stopper 16 connected to the float shaft 17a rotates and the stopper pressing portion 15d is opened, so that the float 14 for opening and closing the valve rises due to buoyancy and slides. By pressing the moving plate 12b, the float pressing portion 15b rotates, and further, the sliding portion 12 slides upward along a sliding groove 13a formed in the sliding guide plate 13, and the sliding portion 12 The drain hole opening / closing valve 10 is opened by the opening / closing shaft 11 rotatably pivoted to the pivot portion 12a of the above, and drainage is performed. In the drainage, the water level is lowered, and the float bottom surface 14a of the valve opening / closing float 14 presses the inclined portion 10e of the valve closing weight 10b disposed on the base 10a of the drain hole opening / closing valve 10, and the drain hole opening / closing valve 10 is moved. It is performed until it is closed, and then returns to the state where water can be stored. The float pressing portion 15b and the stopper pressing portion 15d of the float retainer 15 rotate by their own weight and return to the initial state. However, a torsion coil spring may be provided on the pivot 15c and / or the pivot 15e. Thus, the pivotal movement of the pivot 15c and / or the pivot 15e is urged, and malfunction due to adhesion of scale, dust, or the like can be prevented.

The lever 19 is provided with a substantially U-shaped arm portion 19a. By sliding the lever 19 in the opening direction, the float shaft 17a is manually lifted by the shaft pressing portion 19c, and the stopper 16 is moved. By releasing, even if the amount of water stored in the water storage tank 2 has not reached the predetermined amount, the drainage opening / closing valve 10 can be opened to drain water.
Further, an inclined surface 19b equal to the inclination of the float shaft 17a when the stopper release float 17 is at the lowest point is formed on the upper surface of the substantially U-shaped opening of the arm portion 19a. Can be brought into contact with and fixed to the upper surface of the float shaft 17a by sliding in the closing direction. Even if the amount of water stored in the water storage tank 2 reaches a predetermined amount, the stopper 16 is not released, and drainage is performed. No rainwater can be maintained at a constant level. Further, since the shaft portion 16a of the stopper 16 can be pressed and fixed by the shaft pressing portion 19c, the arm portion 19a may have a simple L-shaped structure having only the shaft pressing portion 19c.
At this time, the rainwater exceeding a predetermined amount flows into the drainage pipe 6 from the upper end opening 6a 'and is drained to the lower connection pipe 8 through the drainage pipe connection part 8c, so that the rainwater overflows from the water storage tank. Will not leave.
Since the position of the drain pipe 6 'is shifted from the water supply pipe 4, rainwater flowing from the water supply pipe 4 does not directly flow into the upper end opening 6a' of the drain pipe 6 'and is not drained.

As described above, since the rainwater storage and discharge device in the second embodiment is configured, the following operation is obtained in addition to the operation described in the first embodiment.
(1) A drain hole opening / closing mechanism that opens the drain hole 8b when the amount of water stored in the water storage tank 2 reaches a predetermined amount allows the rainwater that has been stored to flow automatically at a stretch, and a rainwater basin. 50 can be kept clean to prevent breeding of mosquitoes and the like.
(2) A drain hole opening / closing mechanism that opens the drain hole 8b when the amount of water stored in the water storage tank 2 reaches a predetermined amount ensures that rainwater does not overflow from the water storage tank 2 to the outside. It is possible to replace the rainwater in the water storage tank 2 and keep the water storage tank 2, the rain gutter 20, and the rainwater basin 50 clean.
(3) Since the float retainer 15 and the stopper 16 for controlling the rise of the float retainer 15 are provided, the amount of water stored in the water storage tank 2 reaches a predetermined amount and the stopper 16 is released by the stopper release float 17 until the stopper 16 is released. Since the drain hole opening / closing valve 10 remains closed even if the water level increases and the valve opening / closing float 14 rises, rainwater can be held in the water storage tank 2.
(4) During drainage, the valve opening / closing float 14 is lowered, and the drain hole opening / closing valve 10 is rotated by pressing the valve closing weight 10b, so that it is ensured that the water storage tank 2 is almost empty. The drain hole 8b can be closed, and the water can be automatically restarted.
(5) Since the drain hole opening / closing mechanism can be opened and closed by manual operation, even if the amount of water stored in the water storage tank 2 does not reach the predetermined amount, the drain hole 8b is manually opened to drain the water at an arbitrary time. It can be performed.
(6) The drain hole opening and closing mechanism can be opened and closed by manual operation, and the drain hole 8b can be forcibly fixed in a closed state, so that drainage is performed even if the amount of water stored in the water storage tank 2 reaches a predetermined amount. Without doing so, rainwater can be held in the water storage tank 2.
(7) Rainwater exceeding a predetermined amount is drained from the drainage pipe 6 ′ to the lower connection pipe 8 through the drainage pipe connection part 8 c, so that the rainwater does not overflow from the water storage tank 2 to the outside, and the rainwater does not exceed the predetermined amount. Can be held.
(8) The insect control cover 4a is pivoted at one end to the water supply pipe 4, and in a normal state, the water supply pipe 4 is closed by a torsion coil spring, and the water supply pipe 4 is opened only when rainwater flows in. Insects can be prevented from invading and breeding bow hula.

(Embodiment 3)
A rainwater storage and discharge device according to Embodiment 3 of the present invention will be described below with reference to the drawings.
FIG. 5 is a partially broken whole perspective view of a rainwater storage and discharge device according to Embodiment 3 of the present invention.
The same components as those in the first and second embodiments are denoted by the same reference numerals, and the description is omitted.
In FIG. 5, 1b is a rainwater storage and discharge device according to Embodiment 3 of the present invention, 4b is a water supply guide connected to the water supply pipe 4, 30a is a base plate mounted on the bottom surface 2a of the water storage tank 2, 30b Is a guide plate extending or arranged perpendicular to the base plate 30a, 30c is a guide shaft vertically erected and fixed to the base plate 30a, and 31 is a pivot pivotally rotatable at one end on the upper surface of the drain hole opening / closing valve 10. Valve-side opening / closing shaft 31a, a float-side opening / closing shaft 31b pivotally pivoted at one end to a pivot portion 32c, and a pivot portion 31c pivotally pivoting the valve-side opening / closing shaft 31a and the float-side opening / closing shaft 31b. 32, a valve opening / closing float mounted on the base plate 30a; 32a, a guide hole formed in the valve opening / closing float, through which the guide shaft 30c is inserted; and 32b, a valve opening / closing float 32. Float side, 32c A pivot portion, which is arranged on the float side surface 32b and pivotally pivots the float side opening / closing shaft 31b, is fixed to the base plate 30a and is fixed to the base plate 30a to pivotally support the pivot shaft 10c, and 35 is a guide plate portion to the guide plate 30b. The protruding float holding base 35a, the float pressing portion 35b rotatably connected to the float pressing base 35a via the pivot 35c, and the rotatable connection to the float pressing portion 35b via the pivot 35e. A float retainer having a stopper pressing portion 35d provided, 36 is an overflow drain pipe disposed at the upper end of the water storage tank 2, and 37 is disposed above the guide plate 30a and pivotally moves the float shaft 17a. This is the stopper pivot.

The operation of the rainwater storage and discharge device configured as described above according to Embodiment 3 of the present invention will be described below.
In FIG. 5, rainwater is stored in the water storage tank 2, the water level increases, and the valve opening / closing float 32 starts to rise. However, the tip of the stopper pressing portion 35 d of the float retainer 35 is pressed by the pressing portion 16 b of the stopper 16. Therefore, the valve opening / closing float 32 is blocked from rising in a state of contact with the float pressing portion 35b. When the water level further increases and the stopper release float 17 rises, the stopper 16 connected to the float shaft 17a rotates and the stopper pressing portion 35d is opened, so that the valve opening / closing float 32 is attached to the guide shaft 30c by buoyancy. Then, the float pressing portion 35b is rotated and the drain hole opening / closing valve 10 is opened by the opening / closing shaft 31 rotatably pivoted to the pivot portion 32c provided on the float side surface 32b, and drainage is performed. If there is a gap between the valve opening / closing float 32 and the float pressing portion 35b or between the tip of the stopper pressing portion 35d and the pressing portion 16b of the stopper 16, the valve opening / closing float 32 rises and the drain hole opening / closing valve 10 is simultaneously opened. Since it is opened and no water is stored, it is of a folding type having a valve-side opening / closing shaft 31a and a float-side opening / closing shaft 31b in order to allow a margin for the operation of the opening / closing shaft 31. The opening / closing shaft 31 may use a shaft that slides and expands or contracts, or may use a long slack chain instead of the shaft. Drainage is performed until the water level drops, the valve opening / closing float 32 reaches the base plate 30a, and the drain hole opening / closing valve 10 is closed. A plurality of guide shafts 30c for guiding the valve opening / closing float 32 may be provided to prevent the valve opening / closing float 32 from rotating in a horizontal plane.
By bending the water supply guiding portion 4b connected to the water supply pipe 4, the flow rate of rainwater flowing from the water supply pipe 4 is reduced, and it is prevented that the rain water flows directly to the vicinity of the drain hole opening / closing valve 10 immediately below. The damage to the hole opening / closing mechanism is reduced.
In addition, the provision of the overflow drain pipe 36 at the upper end of the water storage tank 2 causes a malfunction in the drain hole opening / closing mechanism, and ensures that even if the drainage is stopped due to malfunction, rainwater exceeding a predetermined amount is reliably discharged. Can be drained.
Further, since the pivot support 33 and the stopper pivot 37 are provided on the base plate 30a and the guide plate 30b, the entire drain hole opening / closing mechanism can be installed simply by placing it on the bottom surface 2a of the water storage tank 2.

As described above, the rainwater storage and discharge device according to the third embodiment is configured, so that the following operation is obtained in addition to the operation of the first or second embodiment.
(1) Since the drain hole opening / closing valve 10 and the valve opening / closing float 32 are directly connected to each other by the pivotable opening / closing shaft 31 pivotally pivoted, the operation is stable and the drain hole opening / closing is ensured. The valve 10 can be opened and closed to store and drain water.
(2) The flow rate of the rainwater flowing from the water supply pipe 4 is reduced by bending the water supply guide part 4b connected to the water supply pipe 4 so as to prevent the rainwater from directly falling around the drain hole opening / closing valve 10 immediately below. Damage to the drain hole opening / closing mechanism due to this can be reduced.
(3) The entire drain hole opening / closing mechanism is formed integrally with the base plate 30a and the guide plate 30b, and can be installed simply by placing it on the bottom surface 2a of the water storage tank 2, so that maintenance can be easily performed.

(Embodiment 4)
A rainwater storage and discharge device according to Embodiment 4 of the present invention will be described below with reference to the drawings.
FIG. 6 is a partially cutaway perspective view of the rainwater storage and discharge device according to the fourth embodiment of the present invention, and FIG. 7 is a schematic cross-sectional view of a main part showing the operation of the rainwater storage and discharge device according to the fourth embodiment of the present invention. is there.
The same components as those in the first to third embodiments are denoted by the same reference numerals, and the description is omitted.
In FIG. 6, 1c is a rainwater storage and discharge device according to Embodiment 3 of the present invention, 40 is a drain hole opening / closing mechanism, 41 is a cylindrical fitting portion 42a protruding from the bottom surface of the bottom plate portion 42 on the lower surface of the water storage tank 2. A frame-shaped float guide portion 42b fitted into a drain hole 8b formed on the bottom surface 2a and erected and fixed to the bottom surface 2a of the water storage tank 2 is formed in the bottom plate portion 42 and formed on the bottom surface 2a of the water storage tank 2. A communication hole communicating with the drain hole 8b, a packing 42c is provided between an outer periphery of the fitting portion 42a and an inner periphery of the drain hole 8b to prevent water leakage, and 43 is provided upright at four corners of the bottom plate portion 42. The vertical movement guide portion 43a of the float portion guide portion 41 for guiding the vertical movement of the float portion 46 by contacting the corner portion of the float portion 46 is disposed at a predetermined height of the float portion guide portion 41 and the bottom portion of the float portion 46. Predetermined float part 46 by contacting 46a A float holding portion 44 for holding at a height, a substantially spherical drain hole opening / closing floating body 44 fitted into the communication hole 42b of the float portion guide portion 41 and opening and closing the drain hole 8b, 46 is a synthetic resin, metal or the like A float portion 46 b connected to the drain opening / closing floating body 44 by a connecting member 45 such as a chain, a wire, or a rope and moving up and down with a change in the water level in the water storage tank 2 is formed on the upper surface of the float portion 46. A substantially arc-shaped abutting portion that abuts on the bottom surface 49d of the float portion control storage portion 49 provided at the upper portion, 47 is connected to the float portion guide portion 41 and allows the float portion control storage portion 49 to rotate freely. The supporting portion 48 is formed in a substantially U-shaped cross section, and the outer peripheral supporting portion of the storing portion supporting means 47 supporting the bottom surface 49d and both side surfaces 49e of the storing portion 49 for controlling the float portion. The longitudinal movement of the floating part control storage part 49 formed on both sides of the outer peripheral support part 48 with a predetermined width and depth so as to surround the rotation support part 49f protruding from both side surfaces 49e of the storage part 49 is provided. The notch-shaped rotary support hole 48b for regulating is disposed in the outer peripheral support portion 48 above the rear surface 49g side of the float portion control storage portion 49 at a predetermined interval from the upper surface of the float portion control storage portion 49. The storage portion rotation suppression member of the storage portion support means 47 that rotates the float portion control storage portion 49 by contacting the upper end of the float portion control storage portion 49 that rises with the rise of the water level, 49 A storage portion 49a formed in a substantially rectangular parallelepiped shape having an open upper surface for storing rainwater flowing from the water supply pipe 4, and a certain amount or more of rainwater formed in the storage portion 49a formed at the upper end of the front surface 49b of the storage portion 49a are stored in the water storage tank 2. Off to drain A float control storage portion having a notched water level adjusting opening 49c and having a bottom surface 49d and both side surfaces 49e supported by an outer peripheral support portion 48 of the storage portion support means 47 and arranged above the float portion 46. .
The bottom plate portion 42 of the float portion guide portion 41 and the bottom surface 2a of the water storage tank 2 are fixed by bonding, thereby reliably preventing water leakage.

The operation of the rainwater storage and discharge device configured as described above according to Embodiment 4 of the present invention will be described below.
6 and 7, the rainwater flowing from the water supply pipe 4 is first stored in the storage portion 49a of the float portion control storage portion 49. When a certain amount of rainwater in the storage part 49a flows out of the water level adjustment opening 49c into the water storage tank 2, the water storage in the water storage tank 2 is started. Even when the water storage in the water storage tank 2 is started, the backwater pressure is larger than the buoyancy applied to the drainage opening / closing floating body 44, so the drainage hole 8b is not opened, and the water level in the water storage tank 2 rises. I do.
When the water level rises, buoyancy is generated in the float part 46 and the float part 46 tends to rise. However, rainwater is stored in the storage part 49a of the float part control storage part 49 disposed above the float part 46. Therefore, the float control unit storage unit 49 cannot be lifted only by the buoyancy of the float unit 46, and the water storage is continued while the float unit 46 and the float unit control storage unit 49 are kept in an equilibrium state.
When the water level further rises, buoyancy is generated in the float control storage 49, and the float control storage 49 starts floating. Triggered by the floating of the float control storage 49, the float 46, which has been prevented from rising by the float control storage 49, starts to rise at once and pushes up the float control storage 49. At this time, since the storage section rotation suppressing member 48b of the storage section support means 47 is disposed above the rear surface 49g side of the float section control storage section 49, the storage section rotation suppressing member 48b and the floating section control The upper end of the end of the storage portion 49 abuts, and the storage portion 49 for float control rotates so as to use the storage portion rotation suppressing member 48b as a fulcrum. By the rotation of the float control storage 49, the rainwater stored in the storage 49a flows into the water storage tank 2 from the rear surface 49g side of the storage 49a.

In addition, since the rotation support portion 49f is provided on both side surfaces 49e of the float portion control storage portion 49, the longitudinal movement of the float portion control storage portion 49 is restricted by the rotation support hole 48a of the outer peripheral support portion 48. Accordingly, the float control storage 49 can be rotated in the direction of the arrow a in a state where the storage rotation control member 48b is securely brought into contact with the end of the float control storage 49.
Further, since the substantially arc-shaped contact portion 46b is formed on the upper surface of the float portion 46, the bottom surface 49d of the float portion control storage portion 49 can be smoothly moved along the arc surface of the contact portion 46b. Accordingly, the float control storage 49 can be smoothly rotated, and the vertical movement of the float 46 can be stabilized.

When the float 46 rises to a predetermined height, the drain hole opening / closing floating body 44 connected by the connecting member 45 is pulled up, and the drain hole 8b is opened to start draining. When the water is drained and the water level is lowered, the float 46 and the drain hole opening / closing floating body 44 are lowered, and the float control storage 49 is also rotated in the direction of arrow b to return to the initial horizontal state. .
When the water level drops to a predetermined height due to the drainage, the bottom 46a of the float 46 contacts the float holder 43a provided in the float guide 41, and the lowering of the float 46 stops.
When the water level further decreases, only the drain hole opening / closing floating body 44 connected to the float portion 46 lowers as the water level decreases. When almost the entire amount of rainwater in the water storage tank 2 is drained, the drainage opening / closing floating body 44 is fitted into the communication hole 42 communicating with the drainage hole 8b, and the drainage hole 8b is closed to prepare for water storage.

As described above, the rainwater storage and discharge device according to the fourth embodiment is configured, so that the following operation is obtained in addition to the operation of the first to third embodiments.
(1) Since the storage unit 49 for controlling the float unit has the storage unit 49a for storing the rainwater flowing from the water supply pipe 4, the water level of the rainwater flowing out to the water storage tank 2 from the water level adjustment opening 49c of the storage unit 49a rises. Even if the buoyancy of the float part 46 alone is used, the float part control storage part 49 cannot be rotated, and the float part 46 becomes stationary, and a certain amount of rainwater is stored in the water storage tank 2. be able to.
(2) A certain amount of rainwater is stored in the water storage tank 2 and buoyancy acts on the float control storage 49, so that the float 46 starts to rise and the bottom 49d is pressed by the float 46. The unit control storage unit 49 rotates while draining the rainwater in the storage unit 49a to the water storage tank 2, and further the ascending float unit 46 raises the drainage opening / closing floating body 44 connected to the float unit 46 to the backwater pressure. By overcoming and rising, the drainage hole 8b is opened, and the rainwater stored in the water storage tank 2 can be drained at a stretch.
(3) Since the water level in the water storage tank 2 decreases and the drain hole 8b can be kept open until the drain hole opening / closing float 44 closes the drain hole 8b, the rainwater stored in the water storage tank 2 can be maintained. Almost all can be drained.
(4) Since the float portion guide portion 41 is provided, the float portion 46 can be smoothly raised as the water level rises, and the drain hole opening / closing floating body 44 connected to the float portion 46 can be reliably pulled up. Drainage can be performed by opening the drainage hole 8b.
(5) By forming the substantially arc-shaped contact part 46b on the upper surface of the float part 46, the bottom surface 49d of the float part control storage part 49 is brought into contact with the circular surface of the contact part 46b as the float part 46 rises. , The float control storage 49 can be smoothly rotated, and the vertical movement of the float 46 can be stabilized.
(6) By forming the float guide 41 as a frame separately from the water storage tank 2, the float 41 can be easily attached to and detached from the water storage tank 2 to improve assemblability, and is excellent in maintenance.
(7) The water level in the water storage tank 2 is lowered by forming the float holding portion 43a that abuts the bottom 46a of the float 46 on the float guide 41 and holds the float 46 at a predetermined height. At this time, it is possible to prevent the float portion 46 from lowering below a predetermined height, and only the drain hole opening / closing floating body 44 connected to the float portion 46 is lowered with a decrease in water level, and almost the entire amount in the water storage tank 2 is reduced. When the rainwater is drained, the drain hole 8b can be closed by the drain hole opening / closing floating body 44.
(8) The installation stability can be improved by providing the bottom plate portion 42 in the float portion guide portion 41 formed of the frame, and the communication hole 42b having a smaller hole diameter than the drain hole 8b is formed in the bottom plate portion 42. By forming the cylindrical fitting portion 42a on the outer periphery of the communication hole 42b and fitting the fitting portion 42a into the drain hole 8b, the float portion guide portion 41 can be easily positioned, and the assembling workability is excellent.
(9) By connecting the storage part support means 47 to the float part guide part 41 formed independently of the water storage tank 2, the entire drain hole opening / closing mechanism 40 can be integrally handled, and It is extremely easy to attach and detach, and it is possible to improve the ease of assembly and maintenance.
(10) Since the rotation control member 48b is provided at a predetermined distance from the upper end of the end of the storage portion 49 for floating part control, the end of the storage portion 49 for floating part control that floats as the water level rises. The storage portion rotation suppressing member 48b can be brought into contact with the upper end of the storage portion, and further, the float control portion 49 is pressed against the bottom surface 49d of the storage portion 49 by the rise of the float portion 46. Can be rotated as a fulcrum, and the rainwater stored in the storage portion 49a of the float portion control storage portion 49 can be discharged into the water storage tank 2 to prepare for the next water storage operation. Can be.
(11) Since the storage-portion rotation suppressing member 48b is disposed at a predetermined interval from the upper end of the float-portion control storage portion 49, the operation of the float-portion control storage portion 49 has a degree of freedom, resulting in malfunction. And damage to components are unlikely to occur.
(12) Since the float control storage 49 is merely mounted on the outer peripheral support 48 and is not fixed to the storage support 47, it can be detached in a short time and assembly and replacement can be easily performed. be able to.
(13) The rotation control portion 49f formed on both sides 49e of the float portion control storage portion 49 and the rotation support holes 48a formed on both sides of the outer peripheral support portion 48 form the float portion control storage portion 49. Since the movement in the longitudinal direction can be restricted, the float-unit control storage unit 49 is rotated in a state where the storage-unit rotation suppression member 48b is securely in contact with the end of the float-unit control storage unit 49. be able to.

  The present invention is particularly advantageous in that the installation space is small by directly attaching to the rain gutter, the installation and dismounting is simple, the structure is simple, the manufacturing can be performed at low cost, and the rainwater can be surely prevented from overflowing from the water storage tank. In addition to being able to take water arbitrarily with a drain cock, it is also possible to automatically repeat almost all of the water stored during rainfall at a stroke, so that it can be repeatedly operated automatically. It can be suitably used as a rainwater storage and discharge device that can be maintained, and can be used in emergencies such as disasters depending on the installation location, and can be sprayed on gardens, greenhouses, street trees, etc. Excellent, can effectively use rainwater, and is excellent in resource saving.

Partially broken whole perspective view of a rainwater storage and discharge device according to Embodiment 1 of the present invention. The front view which shows the installation method of the rain water storage and discharge apparatus in Embodiment 1 of this invention. The perspective view which shows the installation state of the rain water storage and discharge apparatus in Embodiment 1 of this invention. A partially broken whole perspective view of a rainwater storage and discharge device according to a second embodiment of the present invention. A partially broken whole perspective view of a rainwater storage and discharge device according to a third embodiment of the present invention. A partially broken whole perspective view of a rainwater storage and discharge device according to a fourth embodiment of the present invention. Principal cross-sectional schematic diagram showing the operation of the rainwater storage and discharge device in Embodiment 4 of the present invention

Explanation of reference numerals

1. Rainwater storage and discharge device in Embodiment 1 1a Rainwater storage and discharge device in Embodiment 2 1b Rainwater storage and discharge device in Embodiment 3 1c Rainwater storage and discharge device in Embodiment 4 2 Storage tank 2a Bottom surface 2b Side wall 2c Water scale Reference Signs List 3 water storage tank cover 4 water supply pipe 4a insect repellent lid 4b water supply guide part 5 supply hole lid 5a supply hole 6, 6 'drain pipe 6a, 6a' top opening 6b net body 6c, 6d fixing band 7 drain cock 8 lower connection Pipe 8a Fitting groove 8b Drain hole 8c Drain pipe connection 9 Upper connection pipe 10 Drain hole opening / closing valve 10a Base 10b Valve closing weight 10c Rotating shaft 10d Shaft support 10e Inclined portion 11 Opening / closing shaft 12 Sliding portion 12a Pivot shaft 12b Sliding plate 13 Sliding guide plate 13a Sliding groove 14 Valve opening / closing float 14a Float bottom 15 Float push Even 15a Float holding base 15b Float pressing part 15c Pivot part 15d Stopper pressing part 15e Pivot part 16 Stopper 16a Shaft part 16b Pressing part 17 Float for releasing stopper 17a Float shaft 18 Stopper pivot part 19 Lever 19a Arm pressing part 19c Slope Part 20 Rain gutter 20a Upper rain gutter 20b Lower rain gutter 25 Reinforcement bracket 30a Base plate 30b Guide plate 30c Guide shaft 31 Opening / closing shaft 31a Valve side opening / closing shaft 31b Float side opening / closing shaft 31c Axis part 32 Valve opening / closing float 32a Guide hole 32b Float side surface 32c Axis part 33 Axis support part 35 Float retainer 35a Float retainer base 35b Float press part 35c Axis part 35d Stopper press part 35e Axis part 36 Overflow drain pipe 37 Str Par pivot part 40 Drain hole opening / closing mechanism 41 Float part guide part 42 Bottom plate part 42a Fitting part 42b Communication hole 42c Packing 43 Vertical movement guide part 43a Float part holding part 44 Drain hole open / close floating body 45 Connecting member 46 Float part 46a Bottom part 46b Contact part 47 Storage part support means 48 Peripheral support part 48a Rotation support hole 48b Storage part rotation suppression member 49 Float part control storage part 49a Storage part 49b Front surface 49c Water level adjustment opening 49d Bottom surface 49e Side surface 49f Rotation support part 49g Rear 50 Rainwater measure

Claims (10)

  A water storage tank for storing rainwater, a water storage tank cover overlying the water storage tank upper surface, a water supply pipe connected to the upper surface of the water storage tank cover to allow rainwater to flow into the water storage tank, and an upper end opening having the water supply pipe Having a drain pipe erected on the bottom surface of the water storage tank so as to be located at a position shifted from immediately below and slightly lower than an upper end of the water storage tank, and a drain cock disposed at a lower end portion of the water storage tank. A rainwater storage and discharge device comprising:   A water storage tank for storing rainwater, a water storage tank cover overlying the water storage tank upper surface, a water supply pipe connected to the upper surface of the water storage tank cover to allow rainwater to flow into the water storage tank, and a water supply pipe disposed on a bottom surface of the water storage tank. A drain hole provided, a drain hole opening / closing mechanism that opens the drain hole when the amount of water stored in the water storage tank reaches a predetermined amount, and a drain cock disposed at a lower end of the water storage tank. A rainwater storage and discharge device comprising:   An upper connection pipe connecting the water supply pipe and the upper rain gutter, and a lower connection pipe disposed on the bottom of the water storage tank and connected to the lower rain gutter in communication with the lower end of the drain pipe. The rainwater storage and discharge device according to claim 1.   A drain pipe is provided upright on the bottom face of the water storage tank such that an upper end opening is shifted from a position immediately below the water supply pipe and slightly lower than an upper end of the water storage tank and communicates with the lower connection pipe. The rainwater storage and discharge device according to claim 2 or 3.   The drain hole opening / closing mechanism has a base, a valve closing weight protruding from the base, and a drain hole opening / closing valve having a rotating shaft connected to the lower end of the base, and an upper surface of the drain hole opening / closing valve. An opening / closing shaft having one end pivoted and the other end pivoted to a sliding portion, a sliding guide plate having a sliding groove in which the sliding portion slides, and the sliding portion moving upward as the water level rises A valve opening / closing float for closing the drain hole opening / closing valve by pressing the valve closing weight after moving and draining, a float holding member for controlling the rise of the valve opening / closing float, and controlling the rise of the float holding member. A float shaft connected to a stopper and having one end pivotally connected to the inner wall of the upper end of the water storage tank; and a stopper release float disposed at the other end of the float shaft and rising together with the water level and rotating together with the stopper. A contract characterized by having Rainwater reservoir water discharge device according to any one of claim 2 to 4.   The rainwater storage and discharge device according to claim 5, wherein the drain hole opening / closing mechanism has a manual opening / closing lever.   A drain hole opening / closing mechanism, which is formed in a substantially spherical shape and opens and closes the drain hole; a float portion connected to the drain hole opening / closing body and moving up and down with a change in water level; A float portion guiding portion for guiding the movement, a storage portion for storing rainwater flowing from the water supply pipe, and a water level adjusting opening formed in the storage portion and allowing a certain amount or more of rainwater in the storage portion to flow out to the water storage tank. 5. The storage unit according to claim 2, further comprising a storage unit for controlling the float unit, and storage unit supporting means for rotatably supporting the storage unit for float unit control above the float unit. 2. The rainwater storage and discharge device according to claim 1.   The reservoir support means is disposed at a predetermined interval from an upper end of the float control reservoir and abuts on an upper end of the float control reservoir that floats with rising water level. The rainwater storage and discharge device according to claim 7, further comprising a storage part rotation suppressing member that rotates the storage part for float part control.   9. The water supply pipe according to any one of claims 1 to 8, wherein the water supply pipe has an insect repellent lid whose one end is pivotally connected to the water supply pipe, and an opening / closing means for opening the insect repellent lid by inflow of rainwater. 2. The rainwater storage and discharge device according to claim 1. The rainwater storage and discharge device according to any one of claims 1 to 9, further comprising an overflow drain pipe penetrating a position slightly lower than an upper end of the water storage tank.

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