JP2022130705A - Deaeration device, waterproof structure and parking lot - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a deaeration device, a waterproof structure and a parking lot which can suppress swelling of a waterproof layer, prevent hindrance in traveling of a vehicle, and do not impair the appearance of a parking lot.

SOLUTION: A deaeration device includes a deaeration cylinder 63 provided on a waterproof layer 1 formed on a surface of a substrate 31 of a parking area of a parking lot, and a car stop surrounding the deaeration cylinder 63. An opening 1a is formed in the waterproof layer 1. A lower hole 32 communicating with the opening 1a is formed in the substrate 31. The deaeration cylinder 63 includes an annular base part 65 surrounding the opening 1a, a cylindrical part 66 projecting from the base part 65, and a cover part 62 covering an upper opening of a cylinder part 66. In an outer peripheral surface of the cylinder part 66, a screw part and a ventilation groove are formed. The cover part 62 includes a top wall part 69 covering the upper opening of the cylinder part 66, and a peripheral wall part 70. In an inner peripheral surface of the peripheral wall part 70, the screw part fitted to the screw part of the cylinder part 66 is formed. The ventilation groove communicates an internal space of the cylinder part 66 with a space outside the deaeration cylinder 63.

SELECTED DRAWING: Figure 7

COPYRIGHT: (C)2022,JPO&INPIT

Description

The present invention relates to a deaerator, a waterproof structure and a parking lot.

For example, a self-propelled parking lot provided on the roof of a facility such as a store often employs an exposed waterproof structure using a waterproof layer made of a urethane coating film. In this waterproof structure, if the moisture management of the substrate becomes insufficient, the moisture contained in the substrate is released as water vapor due to temperature rise due to the influence of solar radiation, which may cause the waterproof layer to swell. Blistering of the waterproof layer is not only an aesthetic problem, but can also be an obstruction to traffic. The swollen portion of the coating film may be damaged by an external force, which may affect the waterproof performance of the waterproof layer.
Parking lots are often constructed after construction of the main building structure. If there is a delay in the construction period for major structures, securing the curing days for the underlying concrete may become a problem. Sufficiently lengthening the curing period of concrete leads to a delay in construction work schedule. If the number of curing days is short, waterproofing will be applied, for example, when the surface of the foundation is dry.
A waterproof structure formed by an insulation method (breathable buffer construction method) used for roof waterproofing uses a breathable buffer layer made of a breathable buffer sheet, so water vapor released from the base can be released through the breathable buffer layer. However, this waterproof structure is not used in parking lots because it is not strong enough to be applied to parking lots that are subjected to loads due to running of vehicles.
In a parking lot, for example, a deaerator that discharges water vapor is sometimes used in order to prevent swelling of the waterproof layer (see, for example, Patent Document 1).

JP-A-7-34612

However, since it is necessary to install the degassing device in a place that does not obstruct the passage of vehicles and pedestrians, it was sometimes difficult to select an installation site necessary to ensure the degassing performance. In that case, it was difficult to prevent swelling of the waterproof layer because sufficient degassing was not possible. In addition, since the degassing device protrudes from the waterproof layer, it may not be preferable in terms of the appearance of the parking lot.

SUMMARY OF THE INVENTION An object of the present invention is to provide a degassing device that can suppress swelling of a waterproof layer, does not interfere with the running of a vehicle, and does not impair the appearance of a parking lot. , to provide a waterproof structure and a parking lot.

One aspect of the present invention is a degassing device provided in a parking lot having a parking area, comprising: a wheel stop provided surrounding a cylinder, wherein the waterproof layer is formed with an opening facing the ventilation space in the degassing cylinder, and the substrate is formed with a pilot hole communicating with the opening. Provide equipment. It is preferable that the wheel stopper is formed in a cover-like shape that covers the degassed cylinder.
The de-cylinder includes an annular base portion that surrounds the opening and is adhered to the surface of the waterproof layer, and a cylindrical portion that extends from the base portion in a direction away from the waterproof layer. preferable. It is preferable that the degassing device has a ventilation hole formed in the wheel stopper to communicate with the outside.
It is preferable that the wheel stop includes a top plate portion and side plate portions hanging down from the top plate portion.
One aspect of the present invention provides a waterproof structure including the waterproof layer formed on the surface of the foundation of the parking area of the parking lot, and the degassing device.
One aspect of the present invention provides a parking lot having the parking area and a road on which a vehicle travels, wherein the waterproof structure is provided at least in the parking area.

According to one aspect of the present invention, water vapor generated in the substrate can be released from the decylinder through the pilot hole. Therefore, swelling of the waterproof layer can be suppressed. Since the degassing cylinder is provided surrounded by a bollard, and the bollard is provided in the parking space, the deaerator does not impede the movement of vehicles and pedestrians. In addition, since the degassing cylinder is provided inside the bollard and is difficult to see from the outside, the appearance of the parking lot is not spoiled.

(A) It is sectional drawing which shows typically the waterproof structure provided with the deaerator of 1st Embodiment. (B) is an enlarged cross-sectional view of the waterproof structure. FIG. 2 is a perspective view showing the internal structure of the degassing device shown in FIG. 1; FIG. 2 is a perspective view showing a usage pattern of the degassing device shown in FIG. 1; FIG. 2 is a side view showing a usage pattern of the degassing device shown in FIG. 1; 1. It is a top view which shows an example of the parking lot to which the deaerator shown in FIG. 1 is applied. FIG. 7 is an exploded perspective view showing a degassing cylinder that can be used in the degassing device of the second embodiment; FIG. 7 is a diagram showing a usage state of the decylinder shown in FIG. 6; FIG. 7 is a cross-sectional view of the decylinder shown in FIG. 6;

An embodiment of the present invention will be described with reference to the drawings.
[First Embodiment]
FIG. 1(A) is a cross-sectional view schematically showing a waterproof structure 20 provided with the deaerator 10 of the first embodiment. FIG. 1B is an enlarged cross-sectional view of the waterproof structure 20. FIG. FIG. 2 is a perspective view showing the internal structure of the degassing device 10. As shown in FIG. FIG. 3 is a perspective view showing how the degassing device 10 is used. FIG. 4 is a side view showing how the degassing device 10 is used. In addition, planar view means viewing from a direction perpendicular to the surface 31a (see FIG. 1A) of the foundation 31 of the parking lot 30. As shown in FIG. A direction perpendicular to the surface 31a of the base 31 and away from the base 31 (upward in FIG. 1A) is called upward, and the opposite direction is called downward.

As shown in FIGS. 1(A), 1(B) and 2, the waterproof structure 20 is provided in the parking lot 30. As shown in FIG. The waterproof structure 20 includes a waterproof layer 1 and a degassing device 10. - 特許庁
The foundation 31 of the parking lot 30 is formed by, for example, placing concrete. As shown in FIGS. 1A and 1B, a pilot hole 32 is formed in the base 31 of the parking area 33 of the parking lot 30 . The pilot hole 32 is a bottomed hole formed perpendicular to the surface 31a. The pilot hole 32 has, for example, a circular cross section orthogonal to the depth direction. The pilot hole 32 may have a straight shape with a constant inner diameter over the depth direction. Reference numeral 32a denotes the bottom of the pilot hole 32. As shown in FIG. The pilot hole 32 can be formed in the substrate 31 by a drill (not shown) connected to a rotary tool.

The waterproof layer 1 is formed directly on the surface 31a of the substrate 31 or formed on the surface 31a of the substrate 31 with the primer layer 2 interposed therebetween. The primer layer 2 is for ensuring the adhesion of the waterproof layer 1 to the base 31, and a primer made of urethane resin, epoxy resin, or the like can be used. Examples of the method of applying the primer include application with a roller, brush, or the like; spraying with a spray gun, and the like. The amount of primer applied is, for example, 0.15 to 0.2 kg/m ² .

As a material for the waterproof layer 1, polyurethane resin, epoxy resin, polyester resin, vinyl ester resin, methyl methacrylate resin, polyurea resin, etc. can be used, and polyurethane resin is particularly suitable.
As the polyurethane resin, for example, a two-liquid type polyurethane resin composed of a main agent containing polyisocyanate and a curing agent containing a polyfunctional active hydrogen compound reactive with isocyanate groups is preferable.

As the isocyanate compound contained in the main component, an isocyanate group-terminated prepolymer obtained by reacting a polyisocyanate compound and a polyol is preferable. Examples of polyisocyanate compounds include, but are not limited to, diphenylmethane-4,4'-diisocyanate (MDI), carbodiimide-modified diphenylmethane diisocyanate (liquid MDI), polymethylene polyphenyl isocyanate (crude MDI), and 2,4-tolylene diisocyanate. (2,4-TDI), 2,6-tolylene diisocyanate (2,6-TDI), xylylene diisocyanate (XDI), low molecular weight isocyanate compounds such as hexamethylene diisocyanate. These may be used alone or in combination of two or more.

Polyether polyols, polyester polyols, and the like can be used as polyols. Examples of polyether polyols include polyether polyols obtained by addition polymerization of one or more of ethylene oxide, propylene oxide, butylene oxide and the like, and polytetramethylene ether glycols obtained by ring-opening polymerization of tetrahydrofuran.

Specific examples of polyester polyols include one or more of ethylene glycol, propylene glycol, butanediol, pentanediol, hexanediol, glycerin, trimethylolpropane, and other low-molecular-weight polyols, and glutaric acid, adipic acid, and sebacic acid. , terephthalic acid, isophthalic acid, dimer acid, condensation polymerization with one or more other low-molecular-weight dicarboxylic acids or oligomeric acids, and polyester polyols obtained by ring-opening polymerization of caprolactone or the like.

As the curing agent, an active hydrogen-containing compound can be used. For example, at least one selected from polyamines, polyols, and water can be used, but it is preferable to use only polyamines or a mixture of polyamines and polyols.
Examples of the polyamines include aromatic polyamines and aliphatic polyamines. Specifically, diethyltoluenediamine, dialkyl-4,4′-methylenedianiline, tetraalkyl-4,4′-methylenedianiline, 4,4′-methylenebis(2-chloroaniline), bismethylthiotoluenediamine, Polyoxyalkylenediamine, m-xylylenediamine, ethylenediamine, isophoronediamine and the like can be mentioned. These may be used alone or in combination of two or more.
The polyol is not particularly limited as long as it has two or more hydroxyl groups, and examples thereof include general polyols such as polyether polyols, polyester polyols and polytetramethylene glycol; flame-retardant polyols such as phosphorus-containing polyols. These polyols may be used alone or in combination of two or more.

Additives such as plasticizers, curing catalysts, fillers, antioxidants, flame retardants, stabilizers, ultraviolet absorbers, surfactants, and color pigments may be added to the waterproof layer 1 as necessary. .

The thickness of the waterproof layer 1 can be, for example, 1.5 mm or more. By this, sufficient thickness can be given to the waterproof layer 1, and waterproof performance can be improved. The thickness of the waterproof layer 1 is preferably 3 mm or less in consideration of ease of construction and construction cost.
The waterproof layer 1 is formed, for example, by spraying the material resin toward the primer layer 2 using a two-component impingement mixing system spray coating device (two-component impingement mixer) equipped with a high-pressure spray gun. can be formed. The coating amount of the material resin of the waterproof layer 1 can be, for example, 1.5 kg/m ² or more (preferably 1.5 to 3 kg/m ² ).
The waterproof layer 1 may be formed of a one-liquid type polyurethane material.

The waterproof layer 1 is formed with an opening 1a facing a ventilation space S1 inside the degassing cylinder 3, which will be described later. The opening 1a has, for example, a circular shape having the same inner diameter as the opening of the pilot hole 32, and is positioned to overlap the opening of the pilot hole 32 in plan view. Therefore, the ventilation space S1 of the decylinder 3 and the internal space of the pilot hole 32 communicate through the opening 1a.

The degassing device 10 includes a degassing cylinder 3 and a wheel stopper 4. - 特許庁The degassing cylinder 3 includes a base portion 5 and a cylinder portion 6 . The base portion 5 is formed in an annular plate shape. The base portion 5 surrounds the opening 1a in plan view. The base portion 5 is adhered to the waterproof layer 1 via the adhesive layer 7 . The adhesive layer 7 is formed between the lower surface 5a of the base portion 5 and the surface 1b of the waterproof layer 1 so as to surround the opening 1a. Since the adhesive layer 7 is formed surrounding the opening 1a, it can prevent water on the surface 1b from entering the opening 1a. The base portion 5 is a flange portion that extends outward from the lower end of the tubular portion 6 .

In addition, the shape of the base portion 5 is not limited to an annular shape, and may be another shape such as a rectangular frame shape. Further, the decylinder 3 can prevent water on the surface 1b from entering the opening 1a by bonding the base portion 5 to the waterproof layer 1 by the adhesive layer 7, but the water intrusion prevention structure is not limited to this. For example, water can be prevented from entering the opening 1a by covering the gap between the base portion 5 and the surface 1b with a sealing material provided on the periphery of the base portion 5 without using the adhesive layer 7. FIG.

The cylindrical portion 6 is formed in a cylindrical shape extending upward from the upper surface 5 b of the base portion 5 . The outer diameter of the tubular portion 6 is smaller than the outer diameter of the base portion 5 . The central axis direction of the cylindrical portion 6 coincides with, for example, the vertical direction. The cylindrical portion 6 is concentric with the base portion 5 in plan view. The internal space of the base portion 5 and the internal space of the cylindrical portion 6 are collectively referred to as a ventilation space S1.
The degassing cylinder 3 is made of resin, metal, or the like, for example.

Since the de-cylinder 3 is adhered to the waterproof layer 1 over a wide area on the base portion 5, the strength of the de-cylinder 3 can be increased and the intrusion of water into the opening 1a can be reliably prevented. Since the cylindrical portion 6 has an outer diameter smaller than that of the base portion 5 , it contributes to downsizing of the decylinder 3 .

As shown in FIGS. 1A, 1B and 2, the wheel stop 4 includes a top plate portion 8, a pair of side plate portions 9, 9, and a pair of end plate portions 11, 11 (see FIG. 2). ). As shown in FIG. 2, the top plate portion 8 is formed in a rectangular shape, for example, a rectangular shape in plan view. The top plate portion 8 is, for example, parallel to the surface 31a of the base 31 (see FIG. 1A). As shown in FIG. 1A, the pair of side plate portions 9, 9 hang down from one and the other side edges 8a, 8a of the top plate portion 8, respectively. The pair of side plate portions 9, 9 are inclined downward from the side edges 8a, 8a in the width widening direction (the direction in which the mutual distance increases).

Vent holes 12 are formed in one or both of the side plate portions 9 and 9 . The ventilation hole 12 is formed through the side plate portion 9, and communicates the internal space S2 of the wheel stopper 4 with the outside. It is desirable that the ventilation holes 12 are formed in a direction descending from the inner surface 9a of the side plate portion 9 toward the outer surface 9b. As a result, it is possible to prevent rainwater, foreign matter, and the like from entering the wheel stop 4 through the ventilation holes 12. - 特許庁A filter (not shown) that covers the ventilation holes 12 may be formed in the side plate portion 9 . As a result, it is possible to prevent rainwater, foreign matter, and the like from entering the wheel stop 4 through the ventilation hole 12. - 特許庁

As shown in FIG. 2, the pair of end plate portions 11, 11 hang down from one and the other end edges 8b, 8b of the top plate portion 8, respectively. The height dimension of the side plate portions 9 and 9 and the end plate portions 11 and 11 is larger than the height dimension of the degassing cylinder 3 . It is desirable that the top plate portion 8, the side plate portions 9, 9, and the end plate portions 11, 11 are integrally formed. A space surrounded by the top plate portion 8, the side plate portions 9, 9, and the end plate portions 11, 11 is called an internal space S2 (see FIG. 1A).

Since the wheel stopper 4 has a structure including the top plate portion 8, the side plate portions 9, 9, and the end plate portions 11, 11, it has sufficient mechanical strength. In addition, the car stop 4 surrounds the degassed cylinder 3 so that it cannot be seen from the outside, so that the appearance of the parking lot 30 can be improved. As shown in FIG. 1A, the lower ends of the side plate portions 9 and 9 and the lower ends of the end plate portions 11 and 11 are adhered to the surface 1b of the waterproof layer 1 by an adhesive layer 13. As shown in FIG.

The side plate portions 9, 9 and the end plate portions 11, 11 of the wheel stopper 4 surround the degassing cylinder 3 in plan view. The wheel stop 4 is formed in a cover shape to cover the degassed cylinder 3, and accommodates the degassed cylinder 3 in an internal space S2. Therefore, the degassing cylinder 3 is hidden by the bollard 4 and is almost invisible from the outside of the bollard 4 . The wheel stop 4 is made of resin, metal, or the like, for example. The top plate portion 8, the side plate portions 9, 9, and the end plate portions 11, 11, which constitute the wheel stop 4, are made of a non-transparent material.

As shown in FIGS. 3 and 4, the bollard 4 is installed with its longitudinal direction oriented in a direction intersecting the traveling direction P. As shown in FIGS. The traveling direction P is the traveling direction of the vehicle 50 (see FIG. 4) in the parking section 34 of the parking area 33 . The wheel stop 4 is preferably installed perpendicularly to the traveling direction P in a plan view. In FIG. 3, a pair of deaerators 10 are provided near the ends of one parking bay 34 . A pair of degassing devices 10 are provided side by side in a direction perpendicular to the traveling direction P of the vehicle (the width direction of the parking space 34). The wheel stop 4 has the function of determining the position of the vehicle 50 within the parking space 34 by restricting the movement of the tires 51 of the vehicle 50 shown in FIG. For example, the bollard 4 shown in FIG. 4 can restrict the rightward movement of the vehicle 50 due to contact with the tires 51 of the vehicle 50 .

FIG. 5 is a plan view showing a self-propelled parking lot 100, which is an example of a parking lot 30 in which the waterproof structure 20 is provided.
The parking lot 100 may be configured to have only one parking floor, or may be a multilevel parking lot having a plurality of parking floors. The parking lot 100 may be a parking lot provided on an upper floor (for example, a rooftop) of a facility or store. Since a parking lot provided on the upper floor is required to have a high waterproof performance, the waterproof structure 20 fully exhibits its characteristics when applied to this type of parking lot.

The parking lot 100 has an entrance road 101 (driving road) for guiding a vehicle 110, a parking floor 102, and an exit road 103 (driving road) for the vehicle 110 to exit. The parking floor 102 has, for example, a substantially rectangular shape (rectangular shape) in a plan view. A roadway 106 (driving road) is secured. Second to fifth parking areas 112 to 115 are secured outside the driving lane 106 at positions facing each side of the outer periphery of the first parking area 111 . Each of the parking areas 111 to 115 has a plurality of parking lots 116 for one vehicle.

The driveway 106 is formed to surround the first parking area 111 and has a substantially rectangular shape (rectangular shape) in a plan view that conforms to the shape of the outer peripheral edge of the first parking area 111 . The traveling roadway 106 has a first straight portion 106a which is one of two long sides, a second straight portion 106b which is one of two short sides and is adjacent to the first straight portion 106a, and the other long side. It has a third linear portion 106c which is a side and is adjacent to the second linear portion 106b, and a fourth linear portion 106d which is a short side and is adjacent to the third linear portion 106c. The first straight portion 106 a corresponds to the longer side closer to the entrance path 101 and the exit path 103 of the two longer sides. The vehicle 110 can travel clockwise (the order of the first to fourth straight sections 106a to 106d) on the driveway 106. FIG.

A bent portion that connects the first straight portion 106a and the second straight portion 106b is referred to as a first bent portion 107a. A bent portion that connects the second straight portion 106b and the third straight portion 106c is referred to as a second bent portion 107b. A bent portion connecting the third straight portion 106c and the fourth straight portion 106d is called a third bent portion 107c. A bent portion that connects the fourth straight portion 106d and the first straight portion 106a is referred to as a fourth bent portion 107d. The approach road 101 is connected to the first bent portion 107a. The exit path 103 is connected to the fourth bent portion 107d.

When the vehicle 110 enters the parking floor 102, the vehicle 110 passes through the approach road 101, passes through the first curved section 107a, enters the second straight section 106b, travels clockwise on the travel lane 106, and is parked. Park in one of the parking spaces 116 in areas 111-115. When the vehicle 110 exits the parking floor 102, the vehicle 110 exits the parking space 116, travels clockwise on the driving lane 106, enters the exit road 103 via the fourth bend 107d, and enters the exit road 103. Exit the parking lot 100 through .

In the parking lot 100, the waterproof structure 20 shown in FIG. 1A can be constructed in the parking spaces 116 of the parking areas 111 to 115 shown in FIG.

Next, the action of the waterproof structure 20 will be described. As shown in FIGS. 1(A) and 1(B), when the moisture content of the substrate 31 is high, the moisture contained in the substrate is released as water vapor due to the temperature rise caused by the influence of solar radiation and the like. There is The water discharged from the peripheral portion of the pre-holes 32 in the substrate 31 enters the pre-holes 32. - 特許庁The water discharged into the lower hole 32 may be liquid or gas (water vapor). The water in the pilot hole 32 turns into steam and is discharged from the upper opening of the degassing cylinder 3 into the internal space S2 of the wheel stopper 4 through the ventilation space S1. A part of this water vapor is released to the outside of the bollard 4 through the ventilation hole 12 . A release area 35 indicated by a phantom line in FIG. The area of the emission region 35 in plan view increases or decreases according to the depth of the pilot hole 32 .

As shown in FIGS. 1(A) and 1(B) , the degassing device 10 includes a degassing cylinder 3 and a wheel stopper 4, so that the water vapor generated in the substrate 31 is desorbed through the pilot hole 32. It can be released from cylinder 3. Therefore, swelling of the waterproof layer 1 can be suppressed. Since the degassing cylinder 3 is provided within the bollard 4 and the bollard 4 is provided near the end of the parking space 34 (see FIGS. 2 and 3), the degassing device 10 can be used to prevent the movement of vehicles and pedestrians. does not impede traffic. In the degassing device 10, the degassing cylinder 3 is provided inside the car stop 4 and is not easily seen from the outside, so the appearance of the parking lot 30 is not spoiled.

As shown in FIG. 4, the deaerator 10 is provided in a parking area 33 (specifically, a parking section 34) of a parking lot 30. As shown in FIG. Therefore, pressure is applied by the tire 51 of the vehicle 50 to the waterproof layer 1 located near the wheel stop 4 . At this time, part of the moisture present between the waterproof layer 1 and the substrate 31 tends to move toward the pilot hole 32 due to the pressing force (see FIG. 1(A)). Since the pressing force is also applied by the tire 51 to the release area 35 shown in FIG.

In the degassing device 10, since the wheel stop 4 is formed in a cover-like shape covering the degassing cylinder 3, it is possible to prevent rainwater, foreign substances, etc. from entering the degassing cylinder 3. - 特許庁In addition, the appearance of the parking lot 30 can be improved by making the de-cylinder 3 invisible from the outside.

Since the waterproof structure 20 has the degassing device 10 , it is possible to suppress swelling of the waterproof layer 1 by releasing the water vapor generated in the base 31 from the degassing cylinders 3 . Further, since the cylinder release 3 is provided at the car stop 4, the running of the vehicle is not hindered and the appearance of the parking lot 30 is not spoiled.

Since the waterproof structure 20 is provided with the degassing device 10 on the surface 1b of the waterproof layer 1, its configuration is simple. Therefore, for example, a waterproof structure including an air-permeable resin mortar base layer (first layer), a waterproof coating layer (second layer), and a resin mortar finishing layer (third layer) (Patent Document 1 described above) ), the load on the structure supporting the waterproof structure 20 can be reduced. Moreover, since the waterproof structure 20 has a simple configuration, it is excellent in terms of easiness in repairing the waterproof layer 1 .

Since the parking lot 30 is provided with the degassing device 10 , the water vapor generated in the base 31 is released from the degassing cylinders 3 , thereby suppressing swelling of the waterproof layer 1 . Further, since the cylinder release 3 is provided at the car stop 4, the running of the vehicle is not hindered and the appearance of the parking lot 30 is not spoiled.

[Second embodiment]
FIG. 6 is an exploded perspective view showing a degassing cylinder 63 that can be used in the degassing device of the second embodiment. FIG. 7 is a diagram showing how the decylinder 63 is used. FIG. 8 is a cross-sectional view of the decylinder 63. As shown in FIG.
As shown in FIGS. 6 to 8, the degassing device of the second embodiment has the same configuration as the degassing device 10 shown in FIG. is. The degassing cylinder 63 includes a body portion 61 and a cover portion 62 . The body portion 61 includes an insertion tube portion 64, a flange portion 65 (base portion), and a projecting tube portion 66 (tube portion).

The insertion tube portion 64 is formed in a cylindrical shape and is inserted into the pilot hole 32 . One or more vent holes 64a are formed in the insertion tube portion 64 . The ventilation hole 64a penetrates the insertion tube portion 64 in the thickness direction. For example, the plurality of ventilation holes 64a are formed at different positions in the longitudinal direction of the insertion tube portion 64. As shown in FIG. The flange portion 65 is formed in an annular plate shape. The flange portion 65 surrounds the opening 1a of the waterproof layer 1 in plan view. A gap between the peripheral portion of the flange portion 65 and the surface 1 b is closed with a sealing material 71 . Therefore, water on the surface 1b can be prevented from entering the opening 1a. The projecting tubular portion 66 is formed in a cylindrical shape extending upward from the upper surface 65 b of the flange portion 65 . A threaded portion is formed on the outer peripheral surface of the projecting tubular portion 66 . A ventilation groove 68 is formed in the outer peripheral surface of the projecting tubular portion 66 . The ventilation groove 68 is formed along the axial direction of the protruding tubular portion 66 over the entire length of the protruding tubular portion 66 . Since the lower end of the ventilation groove 68 reaches a position lower than the lower end of the cover portion 62 screwed to the projecting cylinder portion 66, sufficient ventilation between the inside and the outside of the decylinder 63 through the ventilation groove 68 is ensured. can. The internal space of the insertion tube portion 64, the flange portion 65, and the projecting tube portion 66 is collectively referred to as a ventilation space S3.

The cover portion 62 is, for example, a cap nut, and includes a top wall portion 69 and a peripheral wall portion 70 hanging down from the peripheral edge thereof. The inner peripheral surface of the peripheral wall portion 70 is formed with a screw portion that is screwed to the outer peripheral surface of the projecting tubular portion 66 . The cover portion 62 covers the upper opening of the protruding tubular portion 66 by screwing onto the protruding tubular portion 66 .

Water (liquid or gas) discharged from the substrate 31 around the pilot holes 32 enters the pilot holes 32 . The water in the pilot hole 32 turns into steam and enters the ventilation space S3 through the lower opening of the insertion tube portion 64 . The water vapor that has entered the lower hole 32 can also enter the ventilation space S3 through the ventilation hole 64a. The water vapor in the ventilation space S3 is released into the cover portion 62 from the upper opening of the decylinder 63 .

The water vapor in the cover portion 62 flows downward through the ventilation grooves 68 and is released to the outside of the de-cylinder 63 (that is, the internal space S2 of the wheel stop 4 shown in FIG. 1(A)). Part of the water vapor is released to the outside of the bollard 4 through the ventilation holes 12 (see FIG. 1(A)).

The degassing device of the second embodiment, like the degassing device 10 of the first embodiment, can release the water vapor generated in the substrate 31 from the degassing cylinder 63 through the pilot hole 32. Therefore, the waterproof layer 1 swelling can be suppressed. Since the degassing cylinder 63 is provided inside the car stop, the degassing device does not obstruct traffic and does not impair the appearance of the parking lot.
A ventilation groove 68 serving as a steam flow path in the degassed cylinder 63 is covered with a peripheral wall portion 70 of the cover portion 62 . Therefore, even if the de-cylinder 63 is submerged by rainwater or the like, the surface tension of water makes it difficult for water to flow into the de-cylinder 63 through the ventilation grooves 68 .

Each configuration, combination thereof, and the like in the above-described embodiments are examples, and addition, omission, replacement, and other modifications of the configuration are possible without departing from the scope of the present invention. For example, in the degassing device 10 shown in FIG. 1A, a fan (not shown) can be provided inside the wheel stop 4. This fan can promote the discharge of water vapor in the internal space S2 of the wheel stop 4 to the outside. In the degassing device 10, a photoelectric cell may be installed on the upper surface of the top plate portion 8 of the bollard 4, and power may be supplied to the fan from the photoelectric cell. The waterproof structure 20 shown in FIG. 1(A) may be formed in an area of the floor of the parking lot 30 other than the parking area 33 (see FIG. 3). Note that the pilot hole formed in the base does not have to be bottomed.

1 Waterproof layer 1a Opening 1b Surface 3, 63 Decylinder 4 Car stop 5 Base 6 Cylinder 8 Top plate 9 Side plate 10 Degassing device 12 Ventilation hole 20 Waterproof structure 33, 111 to 115 Parking area 30, 100 Parking lot 31 Base 31a Surface 32 Preparatory hole 65 Flange (base)
66 Protruding cylinder part (cylinder part)
S1, S3 ventilation space

Claims (7)

A degassing device provided in a parking lot having a parking area,
a de-cylinder protruding above the waterproof layer formed on the surface of the base of the parking area;
A bollard provided surrounding the degassing cylinder,
An opening is formed in the waterproof layer,
A prepared hole communicating with the opening is formed in the base,
The de-cylinder,
an annular base provided on the surface of the waterproof layer surrounding the opening;
a cylindrical portion protruding from the base portion in a direction away from the waterproof layer;
and a cover portion that covers the upper opening of the tubular portion,
A threaded portion and a ventilation groove are formed on the outer peripheral surface of the cylindrical portion,
The cover portion includes a ceiling wall portion that covers the upper opening, and a peripheral wall portion that hangs down from a peripheral edge of the ceiling wall portion,
A threaded portion is formed on the inner peripheral surface of the peripheral wall portion to be screwed to the threaded portion of the cylindrical portion,
The ventilation groove communicates an internal space of the cylindrical portion and a space outside the de-cylinder,
Deaerator. 2. The degassing device according to claim 1, wherein said wheel stopper is formed in a cover-like shape that covers said degassing cylinder. The de-cylinder further comprises an insertion cylinder projecting from the base and inserted into the pilot hole,
A degassing device according to claim 1 . 2. The deaeration device according to claim 1, wherein the wheel stopper is formed with a ventilation hole leading to the outside. 3. The deaeration device according to claim 2, wherein the wheel stopper includes a top plate portion and side plate portions depending from the top plate portion. the waterproof layer formed on the surface of the base of the parking area of the parking lot;
A waterproof structure comprising a deaerator according to any one of claims 1 to 5. A parking lot having the parking area and a road on which the vehicle travels,
A parking lot, wherein the waterproof structure according to claim 6 is provided at least in the parking area.

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