JP2020008375A - Water leakage detector - Google Patents

Abstract

To provide a water leakage detector which can detect a water leakage and also can prevent or reduce entrance of water to a body caused by the leakage until the part of the leakage is fixed.SOLUTION: A water leakage detector 1 is a device on a body 100 for detecting a water leakage from a waterproof sheet 300 to the body 100. The water leakage detector 1 is arranged on the back side of the waterproof sheet 300, and includes a water absorption sheet 2 for adsorbing water Q and a water detection unit 4 for detecting the water Q absorbed by the water absorption sheet 2. The water leakage detector detects the presence of a water leakage according to the result of detection by the water detection unit 4.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a water leak detection device.

  2. Description of the Related Art In recent years, with the demand for high durability of buildings, a waterproof structure in which a waterproof sheet is laid and constructed has been adopted on the rooftops and verandas of many buildings. Since the waterproof sheet is exposed to ultraviolet rays and wind and rain, it is inevitably deteriorated with time, and may be partially broken depending on the degree of the deterioration. In this case, there is a possibility that rainwater leaks out of the broken portion and enters the building. Therefore, it is known to use a water leakage detection system that detects water leakage (for example, see Patent Document 1). The water leak detection system described in Patent Literature 1 can specify a water leak location.

  However, the leak detection system described in Patent Literature 1 has a problem that even if a leak location is specified, rainwater intrusion into the building remains unchanged until the leak location is repaired.

JP 2008-233031 A

  An object of the present invention is to provide a water leakage detection device capable of detecting water leakage and preventing or suppressing intrusion of water due to the water leakage into a skeleton until the water leakage location is repaired.

Such an object is achieved by the following (1) to (8) of the present invention.
(1) A water leakage detection device laid on a skeleton and detecting water leakage from a waterproof sheet having waterproofness to the skeleton,
A water-absorbing sheet arranged on the back side of the waterproof sheet and absorbing moisture,
Comprising a moisture detector that detects the moisture absorbed by the water absorbing sheet,
The water leakage detection device according to claim 1, wherein the presence or absence of the water leakage can be determined according to a detection result of the water detection unit.

(2) The waterproof sheet is folded and laid,
The water leakage detecting device according to (1), wherein the water absorbing sheet is bent together with the waterproof sheet.

  (3) The water leakage detection device according to (1) or (2), wherein the moisture detection unit is disposed in contact with a back side of the water absorbing sheet.

(4) The water detecting section has a paper base provided in contact with the water absorbing sheet, and an electric circuit formed on the base.
The electric circuit is configured to be disconnectable according to the degree of expansion at the time of absorbing moisture in the base,
The water leakage detection device according to any one of (1) to (3), wherein the water leakage is caused when the electric circuit is disconnected.

  (5) The water leakage detection device according to any one of (1) to (4), further including a notification unit that notifies a detection result of the moisture detection unit.

  (6) The water leakage detection device according to (5), wherein the moisture detection unit and the notification unit are unitized.

(7) On the frame, a hard plate member is arranged on the back side of the waterproof sheet,
The water leakage detecting device according to any one of the above (1) to (6), wherein the water absorbing sheet is disposed on a back side of the plate member.

(8) a notifying unit that notifies a detection result of the moisture detecting unit;
The leak detection device according to (7), wherein the notification unit is disposed at a position not overlapping with the plate member in a plan view of the plate member.

  ADVANTAGE OF THE INVENTION According to this invention, while detecting a water leak, it can prevent or suppress the invasion of the water by the water leak until the leak location is repaired.

FIG. 1 is a partial vertical sectional view showing a use state of the water leakage detection device of the present invention. FIG. 2 is a diagram viewed from the direction of arrow A in FIG. FIG. 3 is a schematic diagram showing a state in which water leakage has not yet occurred. FIG. 4 is a schematic diagram showing a state in which water leakage has occurred.

Hereinafter, a water leakage detection device of the present invention will be described in detail based on a preferred embodiment shown in the accompanying drawings.
FIG. 1 is a partial vertical sectional view showing a use state of a water leakage detection device of the present invention. FIG. 2 is a diagram viewed from the direction of arrow A in FIG. FIG. 3 is a schematic diagram showing a state in which water leakage has not yet occurred. FIG. 4 is a schematic diagram showing a state in which water leakage has occurred. In addition, below, for convenience of explanation, the upper side in FIG. 1 is referred to as “upper” or “upper”, and the lower side is referred to as “lower” or “lower”. The left side in FIG. 1 is referred to as “left” or “front”, and the right side is referred to as “right” or “back”. The lower side in FIG. 2 is referred to as “front” and the upper side is referred to as “back”.

  As shown in FIG. 1, a waterproof structure 200 is installed on the skeleton 100. In the skeleton 100, the part where the waterproof structure 200 is constructed is not particularly limited, and examples thereof include a one-story roof and a veranda. In the present embodiment, the floor 101 and the floor 101 are erected from the floor 101. And a wall surface 102. It is preferable that the floor surface 101 is gently inclined from left to right in FIG. Thereby, rainwater or the like can flow downward in the inclined direction, and the drainage effect of the waterproof structure 200 is improved.

  The waterproof structure 200 is laid on the skeleton 100 and has a waterproof sheet 300 having a waterproof property to the skeleton 100, and is disposed on the back side of the waterproof sheet 300, that is, between the skeleton 100 and the waterproof sheet 300. And a certain steel plate 400.

  As shown in FIG. 1, the steel plate 400 has a horizontal portion 401 arranged along the floor surface 101 and a vertical portion 402 arranged along the wall surface 102. As shown in FIG. 2, in the waterproof structure 200, a plurality of steel plates 400 are arranged side by side along the wall surface 102 in the horizontal direction.

  The steel plate 400 is not particularly limited, and for example, a steel plate such as a galvalume steel plate (registered trademark) or a stainless steel plate coated with a film made of polyvinyl chloride can be used.

  As shown in FIG. 1, a waterproof sheet 300 is disposed on a steel plate 400. The waterproof sheet 300 is folded and laid, and has a horizontal portion 301 along the floor surface 101 and a vertical portion 302 along the wall surface 102. The horizontal part 301 covers the horizontal part 401 of the steel plate 400. The vertical portion 302 covers the vertical portion 402 of the steel plate 400. Further, as shown in FIG. 2, the waterproof sheet 300 covers a plurality of steel sheets 400 collectively per sheet.

  Examples of the constituent material of the waterproof sheet 300 include a vinyl chloride resin such as polyvinyl chloride, a polyolefin resin, an ethylene vinyl acetate copolymer, and the like, and one or more of these may be used in combination. Although it can be used, it is preferably polyvinyl chloride. Thereby, for example, the adhesion of the steel plate 400 to the resin cover layer can be improved. The waterproof sheet 300 and the resin cover layer are joined by various joining methods such as welding, fusion (thermal fusion, high-frequency fusion, ultrasonic fusion, and the like) and adhesion (adhesion with an adhesive or a solvent). I have.

  Incidentally, since the waterproof sheet 300 is exposed to ultraviolet rays and wind and rain, it is inevitably easily deteriorated with time, and may be partially broken depending on the degree of the deterioration. For example, in FIG. 1, in the waterproof sheet 300, a boundary portion between the horizontal portion 301 and the vertical portion 302 is broken to form a broken portion 303. In this case, there is a possibility that rainwater (hereinafter, referred to as “water Q”) leaks from the broken portion 303 and enters the skeleton 100. Therefore, such a problem can be solved by using the water leakage detection device 1 that detects water leakage from the waterproof sheet 300.

  As shown in FIG. 1, the water leakage detection device 1 is disposed on the back side of the waterproof sheet 300 and detects the water absorption sheet 2 that absorbs the water Q and the water Q absorbed by the water absorption sheet 2 and reports the fact. And a moisture detection unit 3. Hereinafter, the configuration of each unit will be described.

  The water absorbing sheet 2 is disposed on the back side of the steel plate 400, that is, between the skeleton 100 and the steel plate 400. Accordingly, the water Q can be absorbed by the waterproof sheet 300 before the water Q leaked from the break portion 303 of the waterproof sheet 300 reaches the frame 100. Thereby, it is possible to prevent the water Q from entering the skeleton 100.

  In addition, the water absorbing sheet 2 is disposed between the skeleton 100 and the steel plate 400 in the configuration illustrated in FIG. 1, but is not limited thereto. For example, the water absorbing sheet 2 is disposed between the waterproof sheet 300 and the steel plate 400. Is also good.

  In addition, as shown in FIG. 2, it is preferable that the water-absorbing sheet 2 is arranged to straddle between the two steel plates 400.

  As shown in FIG. 1, the water-absorbent sheet 2 is bent together with the waterproof sheet 300 via the steel plate 400. As a result, a horizontal portion 21 along the floor surface 101 and a vertical portion 22 along the wall surface 102 are formed on the water-absorbent sheet 2. The horizontal portion 21 covers a portion of the floor surface 101 on the wall surface 102 side. The vertical part 22 covers a lower part of the wall surface 102. By being bent in this manner, the water-absorbing sheet 2 can cover the skeleton 100 as widely as possible, and therefore, even if water leakage occurs, a sufficient area capable of absorbing the water Q can be secured.

  The water-absorbing sheet 2 is not particularly limited, and for example, a sheet in which woven or nonwoven fabric is filled with sodium-type bentonite, or a sheet in which high-density polyethylene is further welded as a curing sheet can be used. Thereby, the water absorbing sheet 2 can absorb the moisture Q without excess or deficiency. Further, even if the water absorbing sheet 2 absorbs the water Q, it is prevented from being excessively expanded.

  The moisture detecting unit 3 has a moisture detecting unit 4 for detecting the moisture Q absorbed by the water absorbing sheet 2 and a notifying unit 5 for notifying the detection result of the moisture detecting unit 4, and these are unitized. Thereby, the water detecting section 4 and the notifying section 5 can be collectively arranged at a predetermined position in the water leak detecting device 1. That is, the number of steps for installing the moisture detection unit 4 and the notification unit 5 can be reduced as compared with the case where the moisture detection unit 4 and the notification unit 5 are separately and separately configured.

  As shown in FIGS. 3 and 4, the moisture detecting unit 4 has a base 41 provided in contact with the water absorbing sheet 2 and an electric circuit 42 formed on the base 41.

  The base 41 is formed of a strip having a strip shape. As shown in FIG. 1, the base 41 of the moisture detecting section 4 is arranged in contact with the back side of the horizontal section 21 of the water absorbing sheet 2. As a result, the water Q can be absorbed in the water absorbing sheet 2 by the capillary action in the water absorbing sheet 2, travel toward the base 41, and finally reach the base 41. Further, as shown in FIG. 4, the water Q is also absorbed into the base 41 by capillary action at the base 41. Further, since the paper base 41 has swelling properties, it expands when it absorbs the water Q.

  An electric circuit 42 is formed on the front surface or the back surface of the base 41. The electric circuit 42 is formed of conductive ink by printing on the base 41. In the present embodiment, the electric circuit 42 is turned on by the power supply from the notification unit 5 (see FIG. 3).

  As described above, the base 41 expands when absorbing the water Q. The electric circuit 42 is configured to be disconnectable according to the degree of expansion at the time of absorbing moisture in the base 41. That is, when the base 41 expands due to the absorption of the moisture Q, a tensile force is generated in the electric circuit 42 accordingly. Then, when the electric circuit 42 exceeds the breaking limit due to the tensile force, as shown in FIG. 4, the electric circuit 42 is broken to form at least one broken portion 421. At this time, the electric circuit 42 is disconnected and the energized state is cut off. In the recording unit 422 of the electric circuit 42, the cutoff state is recorded, and it is determined that water is leaked.

  Thus, in the water leak detection device 1, it is possible to determine the presence or absence of water leak according to the detection result of the water detection unit 4. That is, in the water leakage detection device 1, if the energized state in the electric circuit 42 is maintained, water leakage has not yet occurred, and if the electric circuit 42 is in the cutoff state, it can be determined that water leakage has occurred. Then, by the notification by the notification unit 5 described later, for example, the resident can know the water leakage, and can request a repair contractor to repair the waterproof sheet 300. Until the waterproof sheet 300 is repaired, the water absorbing sheet 2 can prevent or suppress the intrusion of the water Q into the skeleton 100.

  The notification unit 5 is mounted on the base 41 of the moisture detection unit 4. The notification unit 5 can notify the detection result of the moisture detection unit 4.

  The notification unit 5 is not particularly limited, and for example, a unit having a built-in RFID (radio frequency identifier) can be used. Thereby, as shown in FIG. 4, the information “determined as water leak” stored in the recording unit 422 of the electric circuit 42 is transmitted to a mobile terminal such as the smartphone 500 by wireless communication. On the smartphone 500, a message indicating "water leakage has occurred" is displayed. Thereby, the resident can know that the water leakage has occurred.

  The notification unit 5 is not limited to the one that performs wireless communication, and may be one that performs wired communication.

  As illustrated in FIG. 2, the notification unit 5 is disposed at a position that does not overlap with the steel plate 400 in a plan view of the steel plate 400. This prevents the wireless communication to the smartphone 500 from being hindered by the steel plate 400, so that the wireless communication can be performed smoothly.

  As described above, the water leakage detection device of the present invention has been described with respect to the illustrated embodiment. However, the present invention is not limited to this, and each unit constituting the water leakage detection device may have any configuration that can exhibit the same function. Can be replaced with Further, an arbitrary component may be added.

DESCRIPTION OF SYMBOLS 1 Water leak detection apparatus 2 Water absorption sheet 21 Horizontal part 22 Vertical part 3 Water detection unit 4 Water detection part 41 Base part 42 Electric circuit 421 Break part 422 Recording part 5 Notification part 100 Body 101 Floor surface 102 Wall surface 200 Waterproof structure 300 Waterproof sheet 301 Horizontal Part 302 Vertical part 303 Break part 400 Steel plate 401 Horizontal part 402 Vertical part 500 Smartphone Q Moisture

Claims (8)

A water leakage detection device laid on the skeleton and detecting water leakage from a waterproof sheet having waterproofness to the skeleton,
A water-absorbing sheet arranged on the back side of the waterproof sheet and absorbing moisture,
Comprising a moisture detector that detects the moisture absorbed by the water absorbing sheet,
The water leakage detection device according to claim 1, wherein the presence or absence of the water leakage can be determined according to a detection result of the water detection unit. The waterproof sheet is folded and laid,
The water leakage detecting device according to claim 1, wherein the water absorbing sheet is bent together with the waterproof sheet.   The water leakage detection device according to claim 1, wherein the moisture detection unit is disposed in contact with a back side of the water absorbing sheet. The moisture detector has a paper base provided in contact with the water-absorbing sheet, and an electric circuit formed on the base.
The electric circuit is configured to be disconnectable according to the degree of expansion at the time of absorbing moisture in the base,
The water leakage detection device according to any one of claims 1 to 3, wherein the water leakage is caused when the electric circuit is disconnected.   The water leakage detection device according to any one of claims 1 to 4, further comprising a notification unit that notifies a detection result of the moisture detection unit.   The water leak detection device according to claim 5, wherein the moisture detection unit and the notification unit are unitized. On the skeleton, a hard plate member is arranged on the back side of the waterproof sheet,
The water leakage detecting device according to any one of claims 1 to 6, wherein the water absorbing sheet is disposed on a back side of the plate member. A notification unit that notifies a detection result in the moisture detection unit,
The water leak detection device according to claim 7, wherein the notifying unit is disposed at a position that does not overlap with the plate member in a plan view of the plate member.

Images