JP7407033B2 - Liquid detection equipment and buildings - Google Patents

Description

TECHNICAL FIELD This disclosure relates to liquid detection devices and buildings.

A roof with a parapet is provided with a drain for draining rainwater and the like. However, if the drain is blocked by debris, water will accumulate on the roof, and if this condition is left untreated for a long period of time, the possibility of water leakage increases. On the other hand, it is not easy to recognize the condition of a roof with a parapet from the outside.

In response to such circumstances, systems have been known that detect abnormalities in drainage systems that discharge rainwater. For example, Patent Document 1 describes a system that determines the blockage state of a drainage system based on the detection result of a sensor and notifies the determination result.

Patent No. 6091986

However, when detecting a blocked state of a drainage system using electrical equipment including an electrical circuit, as in the system disclosed in Patent Document 1, deterioration of the electrical circuit etc. may cause the electrical equipment to may need to be inspected or updated. Furthermore, when introducing a system using an electric circuit into a building, it is necessary to bring the power system to the installation location of the electric circuit, which is time-consuming.

The present invention was made to solve the above problems, and an object of the present invention is to provide a liquid detection device and a building that can detect liquid without using an electric circuit.

A liquid detection device according to the present invention includes a substance that dissolves in a liquid,
a pressing mechanism that presses the substance;
It is equipped with the following.

Further, it is preferable that the liquid detection device of the present invention further includes a housing section that houses the substance and has an introduction hole into which the liquid can be introduced.

Further, the liquid detection device of the present invention further includes a liquid absorbent material capable of absorbing the liquid, and one end of the liquid absorbent material is accommodated in the interior of the accommodation portion through the introduction hole and is attached to the substance. Preferably, they are in contact.

Further, in the liquid detection device of the present invention, it is preferable that the other end opposite to the one end is located below the introduction hole when the liquid detection device is in use.

Further, it is preferable that the liquid detection device of the present invention further includes a cover portion that covers the periphery of the introduction hole.

Moreover, in the liquid detection device of the present invention, it is preferable that the inner wall of the cover part is formed to be spaced apart from the outer wall of the accommodating part by a predetermined distance or more.

Preferably, the liquid detection device of the present invention further includes a support portion that maintains the lower end of the substance or the lower end of the liquid absorbent material at a predetermined height from the floor surface when the liquid detection device is in use. .

Further, it is preferable that the liquid detection device of the present invention further includes a notification section that provides notification based on the displacement of the pressing mechanism.

Further, in the liquid detection device of the present invention, it is preferable that the notification section is constituted by a notification mechanism that is activated when the pressing mechanism is displaced by a predetermined distance or more.

Furthermore, in the liquid detection device of the present invention, it is preferable that the notification unit notifies that a drainage system of a building in which the liquid detection device is installed is blocked.

Further, a building according to the present invention includes the above-mentioned liquid detection device.

According to the present invention, it is possible to provide a liquid detection device and a building that can detect liquid without using an electric circuit.

1 is a diagram showing a schematic configuration of a liquid detection device according to a first embodiment of the present invention. FIG. 2 is a diagram illustrating a method of liquid detection by the liquid detection device shown in FIG. 1. FIG. FIG. 3 is a diagram showing a schematic configuration of a liquid detection device according to a second embodiment of the present invention. 4 is a diagram illustrating a method of liquid detection by the liquid detection device shown in FIG. 3. FIG. 4 is a diagram illustrating a method of liquid detection by the liquid detection device shown in FIG. 3. FIG. It is a figure showing the schematic structure of the liquid detection device concerning a 3rd embodiment of the present invention. 7 is an external perspective view of a detection section included in the liquid detection device shown in FIG. 6. FIG. FIG. 7 is a sectional view of a detection section included in the liquid detection device shown in FIG. 6; FIG. 7 is a schematic diagram showing a state in which the liquid detection device shown in FIG. 6 detects liquid.

Embodiments of the present invention will be described below with reference to the drawings. Note that common components in each figure are designated by the same reference numerals.

(First embodiment)
FIG. 1 is a diagram showing a schematic configuration of a liquid detection device 1 according to a first embodiment of the present invention. As shown in FIG. 1, the liquid detection device 1 according to the first embodiment includes a substance 2 that dissolves in a liquid (hereinafter also simply referred to as a “dissolved substance”) 2, and a pressing mechanism 3 that presses the dissolved substance 2. Be prepared. The dissolved substance 2 is a substance that is solid at room temperature. In this specification, the dissolved substance 2 will be described below as a solid substance that dissolves in liquid water. For example, the dissolved substance 2 can be sugar, salt, or the like. However, the dissolved substance 2 is not limited to the examples described here, and can be any suitable substance that dissolves in a liquid. Therefore, the liquid is not limited to water either. As the dissolved substance 2, it is preferable to select an appropriate substance based on its solubility in liquid. In this specification, the following description will be made assuming that the liquid is water and the dissolved substance 2 is sugar.

In the example shown in FIG. 1, the liquid detection device 1 is installed (placed) on a floor surface 4. As shown in FIG. The floor surface 4 may be, for example, the roof of a building, a balcony, or the like. In the example shown in FIG. 1 , the liquid detection device 1 is placed such that the dissolved substance 2 is in contact with the floor surface 4 . In the example shown in FIG. 1, the pressing mechanism 3 is arranged above the dissolved substance 2, and presses the dissolved substance 2 in the direction of the floor surface 4 as shown by the arrow. The pressing mechanism 3 can press the dissolved substance 2 in any manner. The pressing mechanism 3 has a spring mechanism inside, for example, and can press the dissolved substance 2 by the elastic force of the spring included in the spring mechanism.

Next, a method of liquid detection using the liquid detection device 1 will be explained. The liquid detection device 1 is placed on a floor surface 4 as shown in FIG. When water accumulates on the floor 4 due to rain or the like while the drainage system in a building having the floor 4 is blocked, the dissolved substances 2 of the liquid detection device 1 placed on the floor 4 may , comes into contact with water collected on the floor surface 4. Sugar, which is the dissolved substance 2, dissolves in the water it comes into contact with and its volume decreases. At this time, the dissolved substance 2 is pressed by the pressing mechanism 3, so as shown in FIG. is displaced in the direction of the floor surface 4, which is the pressing direction. This displacement makes it possible to detect liquid on the floor surface 4 on which the liquid detection device 1 is placed. Therefore, for example, a resident or manager of a building having the floor surface 4 can know whether or not liquid is detected by observing the displacement of the position of the pressing mechanism 3. Since the liquid detection device 1 does not use an electric circuit, it can detect liquid without using an electric circuit.

(Second embodiment)
FIG. 3 is a diagram showing a schematic configuration of a liquid detection device 11 according to a second embodiment of the present invention. As shown in FIG. 3, the liquid detection device 11 according to the second embodiment includes a dissolved substance 12 that dissolves in a liquid, and a pressing mechanism 13 that presses the dissolved substance 12.

The dissolved substance 12 may be the same as the dissolved substance 2 of the first embodiment, so a detailed explanation will be omitted here. In this embodiment as well, the explanation will be given assuming that the dissolved substance 12 is sugar that dissolves in water.

Like the pressing mechanism 3 of the first embodiment, the pressing mechanism 13 has, for example, a spring mechanism, and presses the dissolved substance 12 by the elastic force of the spring. In the present embodiment, the pressing mechanism 13 includes a lid portion 17, which will be described later, and a piston portion 13a fixed to the lid portion 17. In this embodiment, the piston portion 13a of the pressing mechanism 13 contacts the dissolved substance 12, and presses the dissolved substance 12 in the direction of the floor surface 14, as shown by the arrow in FIG.

The liquid detection device 11 according to the present embodiment further includes a housing section 16 in which a housing space 15 for housing the dissolved substance 12 is formed, in addition to the lid section 17 and the piston section 13a described above.

Specifically, a bottom surface 16 a that supports the dissolved substance 12 is provided at the lower end of the accommodation space 15 of the accommodation section 16 . The upper end of the accommodating space 15 of the accommodating portion 16 is open, and an upper end opening is formed. The lid portion 17 is configured as an upper lid that can cover the storage portion 16. In this embodiment, in the top plate 17a of the lid part 17 configured as an upper lid, a piston part is provided on the surface that becomes the housing space 15 side (that is, the lower side in FIG. 3) when the lid part 17 is placed over the housing part 16. 13a is attached. The dissolved substance 12 is accommodated in the accommodation space 15 formed by the accommodation section 16 and is pressed by the piston section 13a attached to the top plate 17a of the lid section 17. The piston part 13a presses the dissolved substance 12 in the accommodation space 15 toward the bottom surface 16a of the accommodation part 16 through the upper end opening of the accommodation part 16.

The housing portion 16 has an introduction hole 15a into which liquid can be introduced. In this embodiment, a through hole is formed in the bottom surface 16a of the accommodating portion 16, and the through hole functions as the introduction hole 15a. Note that the position where the introduction hole 15a is formed is not limited to the position described in this embodiment, but may be formed at any position of the accommodating part 16 where the liquid can be introduced into the interior of the accommodating space 15.

The liquid detection device 11 further includes a support section 60. The support 60 maintains contact between the dissolved substance 12 and the liquid at a predetermined height above the floor surface 14 . For example, the support portion 60 may be attached to the housing portion 16 or may be formed integrally with the housing portion 16. The support portion 60 may be configured to be installed (fixed) on a parapet provided in a building having the floor surface 14, for example. With the support section 60 installed on the parapet, the distance between the floor surface 14 and the accommodation space 15, that is, the height from the floor surface 14 to the bottom surface 16a of the accommodation section 16 in this embodiment, is set to a predetermined height H. maintained at ₁ .

In this embodiment, the liquid detection device 11 further includes a liquid absorbent material 18 that can absorb liquid. In this embodiment, the liquid-absorbing material 18 is made of a water-absorbing material that can absorb water. The liquid absorbent material 18 may be made of, for example, nonwoven fabric.

One end 18a of the liquid-absorbing material 18 is accommodated in the accommodation space 15 through the introduction hole 15a, and is in contact with the dissolved substance 12. The liquid-absorbing material 18 is configured such that one end 18a is housed inside the housing space 15 and hangs down from the housing space 15, and the other end 18b opposite to the one end 18a is located outside the housing space 15. has been done. In this embodiment, the length of the liquid absorbent material 18 is determined such that the other end 18b is located below the introduction hole 15a when the liquid detection device 11 is in use. By doing so, the water level can be detected not only at the height of the introduction hole 15a but also at the height of the other end 18b of the liquid-absorbing material 18 below the introduction hole 15a. In other words, the detectable water level can be adjusted by using the liquid absorbing material 18 regardless of the height of the accommodation space 15. Furthermore, by using the liquid-absorbing material 18, it is possible to prevent the liquid detection device 11 from erroneously detecting an accidental and temporary rise in the water level. Specifically, in this embodiment, the length of the liquid absorbent material 18 is determined such that the other end 18b is located at a predetermined height _H2 from the floor surface 14 when the liquid detection device 11 is in use. ing. The state in which the liquid detection device 11 is used refers to a state in which the liquid detection device 11 is installed on a parapet, and liquid can be detected on the floor surface 14. Even if the other end 18b of the liquid-absorbing material 18 comes into contact with water due to an accidental and temporary rise in the water level, it takes a predetermined time for the liquid-absorbing material 18 to be sucked up from the other end 18b to the one end 18a. Therefore, when the water level rises temporarily, the length, water absorption power, etc. of the liquid absorbent material 18 may be adjusted so that water cannot reach from the other end 18b to the one end 18a of the liquid absorbent material 18. This can prevent the liquid detection device 11 from erroneously detecting an accidental and temporary rise in the water level. The height H ₂ can be determined as appropriate, and is preferably in the range of 5 to 10 mm, for example. If the height H ₂ is set smaller than 5 mm, the liquid absorbing material 18 may absorb liquid due to a temporary rise in the water level during heavy rain, for example, and the liquid detection device 11 may cause the above-mentioned accidental temporary rise that is not the original detection target. There is a possibility of falsely detecting a rise in the water level. For example, even if the drainage system is not in a blocked state, if an amount of liquid that exceeds the drainage capacity of the drainage system temporarily accumulates on the floor surface 14, the liquid detection device 11 will detect the liquid. Conversely, if the height H ₂ is made larger than 10 mm, there is a possibility that detection will be delayed when liquid accumulates on the floor surface 14 due to a rise in the water level that should have been detected, rather than an accidental and temporary rise in the water level. be.

In this embodiment, the liquid detection device 11 includes a cover portion 19 that covers the introduction hole 15 a and the liquid absorbent material 18 hanging down from the accommodation space 15 . In this embodiment, the cover portion 19 is formed integrally with the housing portion 16. Specifically, the cover portion 19 is formed by the side wall 16b of the accommodating portion 16 not terminating at the bottom surface 16a, but extending downward in the vertical direction. The cover portion 19 can prevent raindrops from directly contacting the introduction hole 15a or directly contacting the liquid-absorbing material 18 and being absorbed, for example, when it rains.

The liquid detection device 11 includes a notification section 20. The notification unit 20 is a mechanism that provides notification based on the displacement of the pressing mechanism 13. In this embodiment, the notification section 20 includes a trigger section 21, a marker section 22, and a marker fixing section 23.

The trigger section 21 suppresses displacement of the marker section 22. The marker portion 22 is biased in a first direction (to the left in FIGS. 3 to 5) as described later, and the trigger portion 21 suppresses displacement of the marker portion 22 due to this bias. In this embodiment, displacement of the marker portion 22 is suppressed by engaging the marker portion 22 with the trigger portion 21 . In this embodiment, the trigger section 21 is fixed to the pressing mechanism 13. Specifically, the trigger part 21 is fixed to the surface of the top plate 17a of the lid part 17 of the pressing mechanism 13 on the side opposite to the side to which the piston part 13a is attached (that is, the upper side in FIG. 3). Therefore, the trigger section 21 is displaced together with the displacement of the lid section 17 of the pressing mechanism 13.

The sign section 22 is a sign that indicates to residents, managers, etc. that liquid has been detected by the liquid detection device 11. The shape of the marker portion 22 is not particularly limited. The marker portion 22 is biased in the first direction. The first direction can be determined as appropriate, and in this embodiment, it is assumed to be the left direction in FIG. The marker portion 22 may be biased by the elastic force of an elastic member such as a coil spring, for example. When the lid portion 17 of the pressing mechanism 13 is displaced by a predetermined distance or more, the trigger portion 21 is also displaced, and the displacement of the marker portion 22 is not suppressed. As a result, the marker portion 22 is displaced in the first direction. A resident, administrator, or the like can know whether or not liquid is detected by observing whether or not the marker portion 22 has been displaced.

The marker fixing section 23 supports (fixes) the marker section 22 in an initial state. The initial state is the initial state when the liquid detection device 11 is installed, and is a state in which liquid is not absorbed by the liquid absorbing material 18.

Next, a method of liquid detection using the liquid detection device 11 will be explained. As described above, the liquid detection device 11 is installed in a building by installing the support section 60 on, for example, a parapet. When the drainage system in a building having a floor surface 14 is blocked, water accumulates on the floor surface 14 due to rain, for example, and the water surface eventually rises to a height of _H2 from the floor surface 14, as shown in FIG. Then, the other end 18b of the liquid absorbent material 18 comes into contact with the water collected on the floor surface 14. Then, the water that came into contact with the other end 18b is absorbed by the nonwoven fabric serving as the liquid absorbing material 18. The water absorbed by the liquid-absorbing material 18 travels through the liquid-absorbing material 18 from the other end 18b side to the one end 18a side by capillary action, and is introduced into the accommodation space 15 from the introduction hole 15a. As a result, the dissolved substance 12 accommodated in the accommodation space 15 comes into contact with the water sucked up by the liquid-absorbing material 18, and the dissolved substance 12 is dissolved in the water. The dissolved substance 12 dissolved in water flows out of the accommodation space 15 through the water contained in the nonwoven fabric. In this embodiment, the dissolved substance 12 dissolved in water flows downward through the water contained in the nonwoven fabric, and flows out into the water collected on the floor surface 14. As a result, the volume of the dissolved substance 12 accommodated in the accommodation space 15 is reduced. Since the dissolved substance 12 in the storage space 15 is pressed by the pressing mechanism 13, when the volume of the dissolved substance 12 decreases, the pressing mechanism 13 and the trigger part 21 are displaced. Specifically, in the example shown in FIG. 4, the pressing mechanism 13 and the trigger section 21 are pressed down. When the volume of the dissolved substance 12 in the accommodation space 15 decreases by a predetermined amount or more and the pressing mechanism 13 and the trigger part 21 are displaced by a predetermined distance or more, the trigger part 21 and the marker part 22 are moved as shown in FIG. The marker portion 22 is disengaged and the biased marker portion 22 is displaced in the biasing direction, that is, the first direction (that is, the left direction in FIG. 5). A resident, administrator, or the like can recognize that liquid has been detected by the displacement of the marker 22.

In this way, the liquid detection device 11 according to the second embodiment also does not use an electric circuit, and therefore can detect liquid without using an electric circuit. Further, according to the liquid detection device 11 according to the present embodiment, since the liquid detection device 11 is fixed to the parapet of the building by the support portion 60, the dissolved substance 12 contained in the accommodation space 15 is removed from the floor surface 14. The height can be determined as appropriate. In this embodiment, the dissolved substance 12 is accommodated in the accommodation space 15, and the liquid is introduced into the accommodation space 15 through the introduction hole 15a, so that the dissolved substance 12 comes into contact with the liquid at a location other than the introduction hole 15a. This can be prevented. Further, in this embodiment, the liquid absorbing material 18 sucks up the liquid from the other end 18b to the one end 18a, and introduces the liquid from the introduction hole 15a. Therefore, as described above, by adjusting the length of the liquid-absorbing material 18, the height _H2 of the liquid level at which the liquid should be detected can be adjusted as appropriate. In addition, in this embodiment, the liquid-absorbing material 18 sucks up the liquid, the volume of the dissolved substance 12 in contact with the sucked-up liquid decreases, and the pressing mechanism 13 and the trigger part 21 are displaced by a predetermined distance or more. is detected. Therefore, even if the height of the liquid level temporarily exceeds _H2 by accident, if the height of the liquid level immediately falls below _H2 , the pressing mechanism 13 and the trigger part 21 will be displaced by a predetermined distance or more. If not, the liquid detection device 11 will not detect the liquid. Therefore, according to the liquid detection device 11, an accidental and temporary rise in the water level is unlikely to be erroneously detected.

(Third embodiment)
FIG. 6 is a diagram showing a schematic configuration of a liquid detection device 31 according to a third embodiment of the present invention. In the example shown in FIG. 6, the liquid detection device 31 is installed (fixed) on a parapet 51 of a building. As shown in FIG. 6, the liquid detection device 31 according to the third embodiment includes a detection section 40 that detects liquid, a support section 41 that fixes the liquid detection device 31 to a parapet 51 of a building, and a notification section that makes a notification. 42.

The support portion 41 is configured to be able to fix the liquid detection device 31 to the wall surface 51a of the parapet 51. The support portion 41 maintains contact between the dissolved substance 32 contained in the detection portion 40 described later and the liquid on the floor surface 34 of the building at a predetermined height from the floor surface 34 .

FIG. 7 is an external perspective view of the detection section 40 included in the liquid detection device 31. FIG. 8 is a sectional view of the detection unit 40 included in the liquid detection device 31, and specifically, is a sectional view taken along the line AA in FIG. As shown in FIGS. 7 and 8, the detection section 40 includes a housing section 36 and a lid section 37. As shown in FIG. 8, a housing space 35 for housing the dissolved substance 32 is formed in the housing section 36 of this embodiment. Specifically, the lid portion 37 is configured as an upper lid that can cover the storage portion 36. In the present embodiment, a piston portion 33a is attached to a top plate 37a of the lid portion 37 configured as an upper lid, on a surface that faces the storage space 35 when the lid portion 37 is placed over the storage portion 36.

The housing portion 36 has an introduction hole 35a into which liquid can be introduced. In this embodiment, the accommodating portion 36 has a generally cylindrical shape, and has an insertion hole 35b formed at one end for inserting the piston portion 33a, and an introduction hole 35a formed at the other end. . Note that the position where the introduction hole 35a is formed is not limited to the position described in this embodiment, but may be formed at any position where the liquid can be introduced into the accommodation space 35. As shown in FIG. 8, the diameter of the introduction hole 35a is preferably formed to be smaller than the inner diameter of the cylindrical housing portion 36. This makes it easier to prevent the liquid-absorbing material 38 accommodated in the accommodation space 35 from slipping out of the accommodation space 35 through the introduction hole 35a, as will be described later.

The detection unit 40 of the liquid detection device 31 includes a dissolved substance 32 that dissolves in the liquid, and a pressing mechanism 33 that presses the dissolved substance 32.

The dissolved substance 32 may be the same as the dissolved substance 2 of the first embodiment, so a detailed description thereof will be omitted here. In this embodiment as well, the explanation will be given assuming that the dissolved substance 32 is sugar that dissolves in water.

Like the pressing mechanism 3 of the first embodiment, the pressing mechanism 33 has, for example, a spring mechanism, and presses the dissolved substance 32 by the elastic force of the spring. In this embodiment, the pressing mechanism 33 includes a lid portion 37 and a piston portion 33a fixed to the lid portion 37. In this embodiment, the piston portion 33 a of the pressing mechanism 33 contacts the dissolved substance 32 and presses the dissolved substance 32 in the direction of the floor surface 34 . Specifically, the dissolved substance 32 is accommodated in the accommodation space 35 formed by the accommodation section 36, and is pressed by the piston section 33a.

In this embodiment, the dissolved substance 32 and the liquid-absorbing material 38 are housed in the housing space 35 . Specifically, in the accommodation space 35, the dissolved substance 32 is accommodated in the space on the insertion hole 35b side, and the liquid absorbent material 38 is accommodated in the space on the introduction hole 35a side. As shown in FIG. 8, the liquid absorbing material 38 is arranged adjacent to the introduction hole 35a. Furthermore, the liquid-absorbing material 38 and the dissolved substance 32 are in contact within the accommodation space 35 . Further, the dissolved substance 32 is in contact with the piston portion 33a and is pressed by the piston portion 33a. That is, the dissolved substance 32 is pressed while being sandwiched between the piston part 33a and the liquid-absorbing material 38 within the accommodation space 35 formed by the accommodation part 36.

The liquid absorbent material 38 is made of a material capable of absorbing liquid, and is made of, for example, nonwoven fabric.

In this embodiment, the housing section 36 includes a cover section 39 . The cover portion 39 includes a flange portion 39b that projects radially outward from the outer wall 36a of the accommodating portion 36, and a cover main body portion 39c that hangs down from the outer edge of the flange portion 39b. The cover main body portion 39c covers the periphery of the accommodating portion 36 at a position spaced apart from the radially outer side of the accommodating portion 36. Therefore, the cover portion 39 prevents, for example, raindrops from directly touching the introduction hole 35a. In this embodiment, as shown in FIGS. 7 and 8, the cover portion 39 is formed to cover the periphery of the introduction hole 35a of the accommodating portion 36. As shown in FIGS. Further, in this embodiment, the inner wall 39a of the cover portion 39 is formed to be spaced apart from the outer wall 36a of the cylindrical housing portion 36. Thereby, even if raindrops traveling along the outer wall of the cover part 39 enter the inner wall 39a from the lower end of the cover part 39, they can be made difficult to reach the introduction hole 35a. In particular, it is preferable that the inner wall 39a of the cover part 39 be formed so as to be spaced apart from the outer wall 36a of the cylindrical housing part 36 by a predetermined distance or more. The predetermined distance is a distance at which water droplets do not accumulate. If the distance between the inner wall 39a of the cover part 39 and the outer wall 36a of the accommodating part 36 is closer than a predetermined distance, the surface tension of the liquid causes water droplets to flow between the inner wall 39a of the cover part 39 and the accommodating part 36. There is a possibility of reaching the introduction hole 35a through the space between the outer wall 36a and the outer wall 36a. However, by setting the distance between the inner wall 39a of the cover part 39 and the outer wall 36a of the accommodating part 36 to a predetermined distance or more, it becomes easier to prevent water droplets from reaching the introduction hole 35a.

The lid portion 37 includes a connecting portion 37c protruding from the outer wall. An opening 37b is formed in the connecting portion 37c and extends through the connecting portion 37c along the pressing direction of the pressing mechanism 33, which is the displacement direction of the lid portion 37. The connecting part 37c is configured to be able to connect a part of the notification part 42 of the liquid detection device 31. In this embodiment, the extending rod 43 of the notification section 42 is fixed to the connecting section 37c while being inserted through the opening 37b.

The notification unit 42 provides notification based on the displacement of the pressing mechanism 33. Specifically, the notification unit 42 provides notification when the pressing mechanism 33 is displaced by a predetermined distance or more. In this embodiment, the notification unit 42 is configured by a notification mechanism that is mechanically activated when the pressing mechanism 33 is displaced by a predetermined distance or more.

Specifically, in the present embodiment, the notification unit 42 includes a marker portion 44 that is biased in the second direction by, for example, the elastic force of a spring, and a fixture that fixes the marker portion 44 at the initial position. It is composed of: Here, the second direction is a direction opposite to the direction in which the detection unit 40 is arranged with the parapet 51 in between. Since the detection unit 40 of the liquid detection device 31 is installed inside the parapet 51 so as to be able to detect liquid on the floor surface 34 of the building, the second direction is the direction toward the outside of the building across the parapet 51. becomes. The initial position is the position of the marker part 44 in the initial state of the liquid detection device 31, and is the position where it is fixed by the fixture (see FIG. 6).

The fixture is configured to be displaced in conjunction with the extension rod 43. It is configured such that when the pressing mechanism 33 is displaced by a predetermined distance or more and the extension rod 43 is accordingly displaced by a predetermined distance or more, the fixing state of the marker part 44 by the fixture is released. When the fixing state of the sign part 44 by the fixture is released, the sign part 44 biased in the second direction is displaced in the second direction, and for example, as shown in FIG. It will be in a state where it jumps out in the direction of.

Next, a method of liquid detection using the liquid detection device 31 will be explained. In this embodiment, the liquid detection device 31 is fixed to the parapet 51 by the support portion 41 so that the height of the introduction hole 35a from the floor surface 34 is a predetermined height. When the drainage system in a building having a floor surface 34 is blocked, water accumulates on the floor surface 34 due to rain, for example, and when the water surface eventually reaches the height of the introduction hole 35a, the water is collected from the introduction hole 35a. The water introduced into the space 35 comes into contact with the liquid absorbent material 38 . Water is absorbed by the nonwoven fabric as the liquid absorbent material 38. The water absorbed by the liquid-absorbing material 38 travels through the liquid-absorbing material 38 due to capillary action and comes into contact with the dissolved substance 32, and the dissolved substance 32 is dissolved in the water. The dissolved substance 32 dissolved in water flows out of the accommodation space 15 through the water contained in the nonwoven fabric. As a result, the volume of the dissolved substance 32 accommodated in the accommodation space 35 is reduced. Since the dissolved substance 32 in the accommodation space 35 is pressed by the pressing mechanism 33, when the volume of the dissolved substance 32 decreases, the pressing mechanism 33 is displaced. When the pressing mechanism 33 is displaced by a predetermined distance or more due to the volume of the dissolved substance 32 in the accommodation space 35 decreasing by a predetermined amount or more, the extension rod 43 is accordingly displaced by a predetermined distance or more, and the fixing member The fixed state of the marker portion 44 is released. Then, the sign portion 44 biased in the second direction is displaced in the second direction, and is in a state of protruding beyond the parapet 51 toward the outside of the building. A resident, manager, or the like can recognize that liquid has been detected by confirming that the sign portion 44 has been displaced to the outside of the building.

In this way, the liquid detection device 31 according to the third embodiment can also detect liquid without using an electric circuit.

In the above embodiment, it has been explained that the notification section 42 is constituted by a mechanically operated notification mechanism. However, the notification section 42 does not necessarily need to be configured by a mechanically operated notification mechanism. The notification unit 42 may be configured with a mechanism that provides notification using, for example, sound, light, vibration, or the like. In this case, when the pressing mechanism 33 in the third embodiment is displaced by a predetermined distance or more, a switch that starts outputting sound, light, or vibration is turned on, and outputting sound, light, or vibration is started. Residents, managers, etc. can recognize that liquid has been detected by sound, light, or vibration. Residents, managers, etc. can detect liquid detected by visually recognizing the sign 44 within the range of daily movement, without having to approach the area, because the sign 44 is placed outside the building. I can recognize that.

The notification unit 42 may notify that the drainage system of the building in which the liquid detection device 31 is installed is blocked. For example, the notification unit 42 may notify that the drainage system is blocked using a voice guide. For example, the notification unit 42 may notify that the drainage system is blocked by displaying text on the display to the effect that the drainage system is blocked. In this case, the resident, manager, etc. can recognize that the drainage system is blocked by the notification from the notification unit 42.

1, 11, 31: Liquid detection device 2, 12, 32: Dissolved substance 3, 13, 33: Pressing mechanism 4, 14, 34: Floor surface 13a, 33a: Piston part 15, 35: Accommodation space 15a, 35a: Introduction Holes 16, 36: Accommodation section 16a: Bottom surface 16b: Side walls 17, 37: Lid sections 17a, 37a: Top plates 18, 38: Liquid absorbing material 18a: One end 18b: Other end 19, 39: Cover section 20, 42: Notification Part 21: Trigger parts 22, 44: Label part 23: Label fixing part 35b: Insertion hole 36a: Outer wall 37b: Connection part 39a: Inner wall 39b: Flange part 39c: Cover body part 40: Detection part 41: Support part 43: Extension Rod 51: Parapet 51a: Wall surface 60: Support part

Claims (9)

substances that dissolve in liquid,
a pressing mechanism that presses the substance;
an accommodating part that accommodates the substance and has an introduction hole into which the liquid can be introduced;
A liquid absorbing material capable of absorbing the liquid,
In the liquid detection device, one end of the liquid-absorbing material is received from the introduction hole into the interior of the accommodating portion and is in contact with the substance . The liquid detection device according to claim 1 , wherein the other end opposite to the one end is located below the introduction hole when the liquid detection device is in use. The liquid detection device according to claim 1 or 2 , further comprising a cover portion that covers the periphery of the introduction hole. The liquid detection device according to claim 3 , wherein the inner wall of the cover part is formed to be spaced apart from the outer wall of the accommodating part by a predetermined distance or more. According to any one of claims 1 to 4 , further comprising a support part that maintains the lower end of the substance or the lower end of the liquid absorbing material at a predetermined height from the floor surface when the liquid detection device is in use. liquid detection device. The liquid detection device according to any one of claims 1 to 5 , further comprising a notification section that provides notification based on displacement of the pressing mechanism. 7. The liquid detection device according to claim 6 , wherein the notification section includes a notification mechanism that is activated when the pressing mechanism is displaced by a predetermined distance or more. The liquid detection device according to claim 6 or 7 , wherein the notification unit notifies that a drainage system of a building in which the liquid detection device is installed is blocked. A building comprising the liquid detection device according to any one of claims 1 to 8 .

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