JP2024064181A - Rooftop piping box - Google Patents

Abstract

[Problem] To provide a rooftop piping box that is easy to handle, install, and maintain. [Solution] A rooftop piping box comprising a base unit with openings at the top and bottom, and an upper unit placed on the base unit, with a closed top and an opening at the bottom. The upper unit includes a first member fixed to the base unit, and a second member fixed to the first member. The first member includes a first sidewall that constitutes a sidewall of the upper unit. The second member includes a second sidewall that constitutes the sidewall of the upper unit, and a lid that constitutes at least a portion of the top surface of the upper unit. [Selected Figure] Figure 1

Description

This disclosure relates to rooftop piping boxes.

In large-scale construction such as apartment buildings and buildings, pipes and electrical wires may penetrate the roof slab from inside the building and be taken out onto the roof. At such times, it is known that a box-shaped structure is installed to cover the penetrations in order to protect and waterproof the penetrations and pipes. This structure is generally known as a pigeon coop. Pigeon coops, or rooftop piping boxes, are sometimes constructed from concrete following the pouring of the roof slab. Pre-unitized unit-type rooftop piping boxes are also known. For example, the following have been proposed for unit-type rooftop piping boxes:

Patent Document 1 discloses a rooftop piping box that includes a box-shaped base, an upper that is placed above the base, and a lid member that closes the upper opening. Patent Document 1 discloses that the bottom plate of the upper forms a flange that protrudes around the upper part of the base. The flange is provided with multiple extraction holes. It also describes that when the extraction holes are not used, they are sealed with caps.

Patent Document 2 discloses a rooftop piping box that includes a lower unit, an intermediate unit, and an upper unit that closes the upper opening of the intermediate unit. The lower unit of the rooftop piping box in Patent Document 2 does not have a flange portion that protrudes outward from the lower end of the side wall, but has legs that extend inward from the lower end of the side wall.

JP 2015-78746 A JP 2018-87444 A

It is desirable for a unit-type rooftop piping box to be easy to handle, easy to install, and excellent in maintainability. Therefore, the object of this disclosure is to provide a rooftop piping box that is easy to handle, easy to install, and excellent in maintainability.

The rooftop piping box according to the present disclosure comprises a base unit with an open top and bottom, and an upper unit placed on the base unit, with a closed top and an open bottom. The upper unit includes a first member fixed to the base unit, and a second member fixed to the first member. The first member includes a first sidewall that constitutes the sidewall of the upper unit. The second member includes a second sidewall that constitutes the sidewall of the upper unit, and a lid that constitutes at least a portion of the top surface of the upper unit.

This disclosure provides a rooftop piping box that is easy to handle, install, and maintain.

FIG. 2 is a perspective view of the rooftop piping box according to the first embodiment. FIG. 2 is a cross-sectional perspective view of the rooftop piping box shown in FIG. 1 . 2 is a cross-sectional perspective view of the rooftop piping box shown in FIG. 1 with some members removed. FIG. FIG. 2 is a side view of an upper unit of the rooftop piping box shown in FIG. 1 . 2 is a schematic diagram showing a state in which the rooftop piping box shown in FIG. 1 is partially disassembled and stored. FIG. 2 is an enlarged schematic cross-sectional view of a portion of the rooftop piping box shown in FIG. 1 .

[Overview of the embodiment]
First, an overview of an embodiment of a rooftop piping box according to the present disclosure will be listed and described.
The rooftop piping box according to the present disclosure includes a base unit with an open top and bottom, and an upper unit placed on the base unit, with a closed top and an open bottom. The upper unit includes a first member fixed to the base unit and a second member fixed to the first member. The first member includes a first sidewall that constitutes a sidewall of the upper unit. The second member includes a second sidewall that constitutes the sidewall of the upper unit, and a lid that constitutes at least a portion of the top surface of the upper unit.

Conventionally, unit-type pigeon cottages have been known. When unit-type pigeon cottages are used in construction work, there is an advantage in that the construction period can be shortened compared to constructing pigeon cottages by pouring concrete. In addition, unit-type pigeon cottages that are lighter than pigeon cottages made of concrete are also known. However, there is an ongoing need for further weight reduction.

Also known as a unit-type pigeon coop is a two-tier structure consisting of a base unit fixed to the roof slab and an upper unit placed on top of the base unit (for example, Patent Documents 1 and 2). Furthermore, a type is known in which the top surface of the upper unit is closed with a removable lid, allowing the lid to be removed as necessary to carry out maintenance of the piping etc. housed in the pigeon coop. However, it would be desirable to make maintenance of the piping etc. even easier, as well as to make it easier to position the pigeon coop and install the piping when it is installed.

In light of this background, a rooftop piping box configuration that is easy to handle, install, and maintain was considered. Then, it was conceived to have a two-tiered structure of a base unit and an upper unit, and further to have the side wall of the upper unit composed of two members. In the rooftop piping box (pigeon coop) according to the present disclosure, the upper unit includes a first member fixed to the base unit and a second member fixed to the first member. The first member includes a first side wall that constitutes the side wall of the upper unit, and the second member includes a second side wall that constitutes the side wall of the upper unit. In other words, the side wall of the upper unit is composed of the first member and the second member fixed to the first member. The second member includes a lid that constitutes at least a part of the upper surface of the upper unit. According to this configuration, when the second member is removed from the first member, a part of the upper surface and the side surface of the upper unit is removed. Therefore, the interior of the rooftop piping box can be easily accessed. This makes it easy to install and maintain the piping housed inside the box. When installing the box, the base unit and upper unit can be easily fixed together. In addition, by splitting the side walls, which account for most of the weight of the upper unit, the weight of each component is reduced, making it easier to handle.

The entire upper unit may be made of FRP (fiber reinforced plastic). By making the entire upper unit, including the side walls, out of FRP, the weight of the upper unit can be significantly reduced compared to an upper unit in which only a portion is made of concrete or steel plate. Also, as described above, the rooftop piping box according to the present disclosure has an upper unit with side walls made of two members. Therefore, there is no need to prepare a cylindrical side wall member when making the upper unit, making FRP molding easy.

In the upper unit, the combination portion of the first member and the second member may include an oblique portion that extends obliquely with respect to the horizontal direction. By making the combination portion an oblique portion, it is not necessary to provide a vertical portion at the combination portion of the side walls, which is highly effective in preventing moisture from entering through the combination portion. In addition, it is possible to ensure a large opening when the second member is removed. This makes it easier to access the inside of the box when the second member is removed, and provides excellent maintainability. Furthermore, it is possible to configure an upper unit with side walls divided by members of a simple shape, which further improves ease of handling and installation.

In the rooftop piping box according to the present disclosure, the side walls of the base unit may include two sets of main side walls facing each other and a corner wall connecting adjacent main side walls. The interior angle between the main side walls and the corner wall may be greater than 90° and less than 180°. With this configuration, the base unit can be constructed without creating right or acute angles on the outer peripheral surface of the side walls of the base unit. With this configuration, when waterproofing is performed on the outer peripheral surface of the base unit, the waterproof sheet can be easily applied, and the waterproof sheet and the base unit can be reliably bonded to ensure waterproofing.

The base unit may have a flange portion at the upper end of the side wall that protrudes outward from the side wall. By providing a flange portion at the upper end of the side wall of the base unit, the upper end of the waterproof sheet attached to the side wall of the base unit can be easily and reliably processed. This improves the waterproof effect and extends the life of the waterproof sheet.

The base unit may have a top wall at the upper end of the side wall, extending at a right angle to the side wall, with an opening formed in the center, and the top wall may have a rising portion extending upward from the top wall around the periphery of the opening. With this configuration, even if moisture enters the box from the upper unit, it is possible to prevent moisture from moving from the upper unit to the base unit. This reduces the possibility that moisture will affect the slab surface located inside the rooftop piping box, and further improves waterproofing and the durability of the waterproofing effect.

The upper unit may include a skirt provided on the lower part of the upper unit. The skirt may have a portion that protrudes outward beyond the side wall of the base unit and hangs down to cover the upper part of the base unit. By providing a skirt on the lower part of the upper unit, the life of the waterproofing treatment is extended and more reliable waterproofing is achieved.

In the upper unit, the first member may have a first edge portion that protrudes outward from the upper end of the first side wall that constitutes the side wall of the upper unit. The second member may have a second edge portion that protrudes outward from the lower end of the second side wall that constitutes the side wall of the upper unit. A hole may be provided in each of the first edge portion and the second edge portion. The first member and the second member may be fixed to each other by fastening a bolt inserted into the hole when the first edge portion and the second edge portion are combined. With this configuration, the first member and the second member can be fixed to each other without providing a hole in the side wall surface, and moisture can be reliably prevented from entering the inside of the box through the combined portion of the first member and the second member. In addition, the first member and the second member can be easily fixed and removed, resulting in a rooftop piping box that is easy to install and has excellent maintainability.

[Specific Example of the Embodiment]
Next, an example of a specific embodiment of the rooftop piping box according to the present disclosure will be described with reference to the drawings. In the following drawings, the same or corresponding parts are given the same reference numerals, and the description thereof will not be repeated.

The configuration of rooftop piping box 1, which is an example of an embodiment of a rooftop piping box according to the present disclosure, will be described with reference to Figs. 1 to 6. Note that all of the drawings are schematic diagrams, and some of the configuration such as bolts and screws are omitted. Fig. 1 is a perspective view of rooftop piping box 1 according to embodiment 1.

Referring to FIG. 1, the rooftop piping box 1 includes a base unit 11 and an upper unit 81 placed on the base unit 11. The base unit 11 includes a side wall 12 and a leg 13 provided at the lower end of the side wall 12. The upper unit 81 includes a first member 21 fixed to the base unit 11 and a second member 51 fixed to the first member 21. For the sake of explanation, in this specification, the upper unit side of the rooftop piping box 1 shown in FIG. 1 (the + side of the arrow H indicating the height direction in FIG. 1) is referred to as "upper", and the leg 13 side of the rooftop piping box 1 (the - side of the arrow H indicating the height direction in FIG. 1) is referred to as "lower".

The rooftop piping box 1 is installed on the rooftop of a building such as a building or condominium. Specifically, the legs 13 are fixed to the floor surface of the rooftop, or the lower part of the base unit 11 is embedded in the rooftop slab, thereby fixing the rooftop piping box 1 to the building. It is preferable that the rooftop piping box 1 is installed so that the legs 13 are horizontal.

(Base unit overview)
Referring to FIG. 1, the side wall 12 of the base unit 11 rises perpendicularly to the leg 13. The side wall 12 is a cylindrical wall having no opening. The cross section perpendicular to the height direction of the side wall 12 is a rectangle with the corners cut off. In other words, the cross section perpendicular to the height direction of the side wall 12 is an octagon with irregular sides, consisting of four relatively long long sides and four relatively short short sides connecting adjacent long sides. The side wall 12 includes four main side walls 12A and corner walls 12B connecting the main side walls 12A. The main side wall 12A includes two sets of wall surfaces facing each other. In the example shown in FIG. 1, the four main side walls 12A have the same dimensions and form a square without corners, but are not limited to this form. For example, the main side wall 12A may be composed of two pairs of rectangular faces having different sizes and form a rectangle without corners.

The interior angle between the main side wall 12A and the corner wall 12B is 135°. That is, in a cross section perpendicular to the height direction, the side wall 12 has a shape in which a right-angled isosceles triangle is cut from the four corners of a square. Note that, throughout this disclosure, angles expressed in numerical values and terms such as "vertical" and "square" do not define angles or shapes in a strict mathematical sense, but have a similar practical effect and include an acceptable range of error. Naturally, this includes the range of errors and deviations that occur during manufacturing and construction.

In conventional pigeon coops, the base unit is constructed in a rectangular prism shape, with adjacent side walls meeting at right angles. For this reason, when waterproofing the outer surface of the side walls, a technique is required to ensure that the corners are tightly sealed. In addition, after construction, the waterproof sheet may deteriorate from the corners, compromising its waterproofing properties. In contrast, the rooftop piping box 1 disclosed herein has a rectangular shape with the four corners rounded off, making it easier to install the waterproof sheet and also extending the life of the waterproofing treatment.

The base unit 11 is typically made of a steel plate such as a stainless steel plate or a galvanized steel plate. However, the material of the base unit 11 is not particularly limited, and may be a resin-containing material such as FRP or engineering plastic (high-strength plastic), or an inorganic material such as concrete.

(Overview of upper unit)
1, the upper unit 81 is preferably made entirely of FRP. That is, both the first member 21 and the second member 51 are preferably made of FRP. By making the first member 21 and the second member 51 out of FRP, the weight of the upper unit 81 can be reduced. However, the material of the upper unit 81 is not limited to FRP, and it may be made partly or entirely of steel plate, engineering plastic, or the like.

The upper unit 81 is a box-shaped unit with a closed top surface 81a. The side wall 81A of the upper unit 81 is a rectangular cylindrical wall that has no openings except for the opening 27 (FIG. 2) for inserting the piping. The cross section perpendicular to the height direction of the side wall 81A is substantially square. The width dimension W2 of the side wall 81A of the upper unit 81 is larger than the width dimension W1 of the base unit 11. In other words, the upper unit 81 protrudes outward beyond the base unit 11. The opening 27 may be provided when the rooftop piping box is installed on the roof. In other words, the side wall 81A may not have an opening when the rooftop piping box is manufactured or when the rooftop piping box is distributed to the market.

The side wall 81A of the upper unit 81 is composed of a first side wall 21A, which is a part of the first member 21, and a second side wall 51A, which is a part of the second member 51. In other words, the first side wall 21A and the second side wall 51A are combined to form the side wall 81A that covers the four sides. The combination part C, where the first side wall 21A and the second side wall 51A abut, includes an upper combination part C1 located near the upper end of the side wall 81A and extending horizontally, a lower combination part C2 located near the lower end of the side wall 81A and extending horizontally, and an oblique part C3 that connects between the upper combination part C1 and the lower combination part C2 and extends obliquely with respect to the horizontal direction. The oblique part C3 is provided on the side surface 81c, which is the two opposing surfaces of the side wall 81A that do not have an opening and is formed of four surfaces.

(Base unit details)
The configuration of the base unit 11 will be described in more detail with reference to Figures 2 and 3. Figure 2 is a cross-sectional perspective view of the rooftop piping box 1. Figure 3 is a cross-sectional perspective view of the rooftop piping box 1 with the second member 51 removed, showing the rooftop piping box 1 cut at a different location from that shown in Figure 2. Both Figures 2 and 3 show the rooftop piping box 1 installed on a concrete rooftop slab S. Figure 3 also shows the rooftop piping box 1 with a waterproof sheet 110 applied to the outer surface thereof.

Referring to FIG. 2, the base unit 11 has legs 13 that extend outward and inward from the lower end of the side wall 12 at right angles to the side wall 12. The legs 13 may be made of a steel plate having a certain thickness. The thickness of the legs 13 may be, for example, about 0.5 to 20 mm, typically about 0.5 to 5 mm. The legs 13 are provided around the entire circumference of the side wall 12. The legs 13 include outer legs 13A that extend outward from the side wall 12, and inner legs 13B that extend inward from the side wall 12. By configuring the legs 13 to extend both inward and outward from the side wall 12, the rooftop piping box 1 can be reliably and stably fixed to the rooftop floor surface. In addition, durability against environments such as strong winds can be increased.

The outer leg 13A may protrude outward from the side wall 12, for example, by about 1 to 50 mm, typically about 1 to 15 mm. At each of the four corners of the outer leg 13A, a hole 45 is formed penetrating the outer leg 13A in the thickness direction. The hole 45 can be used as a screw hole. A screw can be inserted into the hole 45 and used for positioning and temporary fixing when installing the rooftop piping box 1. The inner leg 13B may protrude inward from the side wall 12, for example, by about 10 to 200 mm, typically about 10 to 100 mm. At least four corners of the inner leg 13B are formed with holes, and the base unit 11 is fixed to the rooftop slab S by inserting the fixing bolts 42 into the holes. Naturally, the number and spacing of the fixing bolts 42 can be changed as appropriate depending on the size of the rooftop piping box 1 and the required strength.

The inner circumference of the inner leg 13B defines the opening 14. That is, the leg 13 forms the bottom surface of the base unit 11, and the opening 14 is formed in the center of the bottom surface. Through the opening 14, the piping 100 is inserted from the roof slab S to the inside of the roof piping box 1.

The base unit 11 has a flange portion 15 that protrudes outward from the upper end of the side wall 12 relative to the side wall 12. The flange portion 15 protrudes perpendicularly to the side wall 12. In other words, the flange portion 15 is a portion that extends in the horizontal direction. The flange portion 15 is provided around the entire circumference of the side wall 12. The flange portion 15 is configured to protrude outward from the side wall 12 by approximately 5 mm to 50 mm.

The upper surface of the flange portion 15 constitutes an upper wall 16 extending at a right angle to the side wall 12. The upper wall 16 is provided on the upper portion of the side wall 12 around the entire circumference of the side wall 12. The upper wall 16 is a wall surface that extends horizontally inward of the side wall 12. The inner circumference of the upper wall 16 defines an opening 18. That is, the upper wall 16 constitutes the upper surface of the base unit 11, and an opening 18 is formed in the center of the upper surface. Through the opening 18, the piping 100 is inserted from the base unit 11 to the upper unit 81. A rising portion 17 that extends upward relative to the upper wall 16 is provided on the periphery of the upper wall 16 (opening 18). The rising portion 17 is provided around the entire inner circumference of the upper wall 16.

Holes are formed in at least four corners of the top wall 16, and bolts 41 are inserted into these holes to secure the base unit 11 and the first member 21 of the upper unit 81 to each other. Naturally, the number and spacing of the bolts 41 can be changed as appropriate depending on the size of the rooftop piping box 1 and the required strength.

After the rooftop piping box 1 is installed on the rooftop slab S, waterproofing may be performed in conjunction with rooftop waterproofing. The method of waterproofing is not particularly limited to sheet waterproofing, coating waterproofing, etc., but FIG. 3 shows the state after the waterproof sheet 110 has been applied. Referring to FIG. 3, the waterproof sheet 110 is raised from the floor surface of the rooftop slab S so as to cover the outer surface of the side wall 12. The upper end of the waterproof sheet 110 is applied up to the vicinity of the lower surface 15b of the flange portion 15. The gap between the upper end of the waterproof sheet 110 and the lower surface 15b of the flange portion 15 is filled with a sealant 111. Furthermore, the waterproof sheet 110 and the side wall 12 are fixed by the angle 112. The flange portion 15 is provided on the base unit 11, so that the waterproof sheet 110 can be applied reliably. This makes it possible to easily and reliably perform waterproofing, and to extend the life of the waterproofing.

In the base unit 11, the side wall 12, the flange portion 15, and the upper wall 16 are formed by pressing steel plates. Therefore, the flange portion 15 is formed by bending the steel plate constituting the side wall 12 outward. In addition, the steel plate constituting the flange portion 15 is bent in the opposite direction to form the upper wall 16. In the base unit 11, the lower surface 15b of the flange portion 15 and the upper wall 16 are separated by a peripheral wall 19. Furthermore, the upper wall 16 is bent upward to form the rising portion 17. However, this is not limited to this form, and each or some of the side wall 12, the flange portion 15, the upper wall 16, and the rising portion 17 may be made of a different material. The peripheral wall 19 is not an essential component, and the peripheral wall 19 may be omitted. In other words, the peripheral wall 19 may be crushed and the lower surface 15b of the flange portion 15 may be in contact with the upper wall 16. The flange portion 15, upper wall 16, and rising portion 17 may also be configured as a single member that is fixed to the side wall 12.

(Upper unit details)
In addition to the above-mentioned drawings, the configuration of the upper unit 81 will be described in more detail with reference to Fig. 4. Fig. 4 is a side view of the upper unit 81. The portions indicated by dotted lines in Fig. 4 indicate the internal structure or thickness of materials that are not visible on the outer surface.

As described above, the upper unit 81 includes the first member 21 and the second member 51. First, the first member 21 will be described. With reference to Figures 2 and 3, the first member 21 includes a first shell 22 and a skirt 23 fixed to the lower part of the first shell 22. The first shell 22 and the skirt 23 are fixed to each other.

3 and 4, the first shell 22 includes a rectangular bottom wall 22b with an opening 28 formed in the center, a side wall 22a rising from the outer end of the bottom wall 22b, and a first edge 22e protruding outward from the upper end of the side wall 22a. The opening 28 is an opening on the lower surface of the upper unit 81. The side wall 22a constitutes the first side wall 21A. The first edge 22e is formed around the entire upper end of the side wall 22a. The opening 28 is slightly larger than the rising portion 17 of the base unit 11, and the first shell 22 (first member 21) can be placed on the base unit 11 by fitting it around the rising portion 17. This configuration makes it easy to position the first member 21 relative to the base unit 11. The first shell 22 is an integrally molded FRP product.

The side wall 22a of the first shell 22 includes a front portion 22s in which an opening 27 that is an outlet for the piping 100 is formed, two side portions 22t that connect to both ends of the front portion 22s, and a back portion 22u that faces the front portion 22s. The upper end of the front portion 22s is located near the upper end of the side wall 81A (FIG. 1) and extends horizontally. The upper end of the back portion 22u is located near the lower end of the side wall 81A and extends horizontally. The upper end of the side portion 22t includes a portion that connects to the front portion 22s and extends horizontally at the same height as the front portion 22s, a portion that connects to the back portion 22u and extends horizontally at the same height as the back portion 22u, and a portion that connects between them and is oblique. The oblique portion forms an angle of about 50° with respect to the horizontal direction. Although not shown, a hole is formed in the first edge 22e of the side wall 22a for inserting a bolt in the thickness direction of the first edge 22e. It is preferable that a plurality of holes are provided spaced apart from each other in the circumferential direction of the first edge 22e.

The skirt 23 is provided at the lower part of the upper unit 81. The skirt 23 protrudes outward from the side wall 81A of the upper unit 81 and outward from the side wall 12 of the base unit 11. The skirt 23 includes a rectangular upper wall 24 in which an opening of approximately the same size as the opening 28 is formed, and a side wall 25 extending downward (opposite the side to which the first shell 22 is fixed) from the outer end of the upper wall 24. The upper wall 24 and the bottom wall 22b of the first shell 22 are fixed to each other. The upper wall 24 extends outward from the bottom wall 22b of the first shell 22. The outer end (side wall 25) of the upper wall 24 is located inside the first edge portion 22e of the first shell 22. The side wall 25 also hangs down to cover the upper part of the base unit 11. The side wall 25 is located to cover the flange portion 15, the ceiling 111, and the angle 112 of the base unit 11. The side wall 25 covers the top of the base unit 11, protecting the ends of the waterproofing treatment section, prolonging the life of the waterproofing treatment, and providing more reliable waterproofing. In the upper unit 81, the first shell 22 and the skirt 23 are configured as separate members, but the first shell and the skirt may be an integrated member.

Next, the second member 51 will be described. With reference to Figures 2 and 4, the second member 51 is made of the second shell 52, which is a one-piece molded product. The second shell 52 is a one-piece molded product made of FRP. The second shell 52 is the upper member of the upper unit 81, and also functions as a removable cover.

Referring to Figures 2 and 4, the second shell 52 includes a rectangular upper wall 52b with a raised portion 56 formed in the center, a side wall 52a that hangs down from the periphery of the upper wall 52b, and a second edge portion 52e that protrudes outward from the lower end of the side wall 52a. The second edge portion 52e is formed around the entire periphery of the lower end of the side wall 52a. The upper wall 52b constitutes the upper surface 81a (Figure 1) of the upper unit 81. The side wall 52a constitutes the second side wall 51A of the upper unit 81.

The side wall 52a of the second shell 52 is a series of walls that do not have an opening. The side wall 52a includes a front portion 52s, two side portions 52t that connect to both ends of the front portion 52s, and a back portion 52u that faces the front portion 52s. The front portion 52s abuts against the front portion 22s of the first shell 22 at the upper combination portion C1 (Figure 1). The front portion 22s and the front portion 52s are joined to form the front wall of the upper unit 81. The side portion 52t abuts against the side portion 22t of the first shell 22 at the inclined portion C3 (Figure 1). The side portion 22t and the side portion 52t are joined to form the side 81c of the upper unit 81. The rear side portion 52u butts against the rear side portion 22u of the first shell 22 at the lower combination portion C2 (Figure 1). The rear side portion 22u and the rear side portion 52u are combined to form the rear surface 81d (Figure 1) of the upper unit 81.

The second edge 52e of the second shell 52 is provided to face the first edge 22e of the first shell 22. The second edge 52e is wider than the first edge 22e. That is, the second edge 52e extends further outward than the first edge 22e. Furthermore, a skirt portion 52f is provided at the outer end of the second edge 52e, which hangs down from the outer end of the second edge 52e. The skirt portion 52f protects the first edge 22e and the second edge 52e, and prevents moisture from entering between the first edge 22e and the second edge 52e and damage caused by flying objects. Although not shown, a hole is formed in the second edge 52e at a position corresponding to the hole provided in the first edge 22e, penetrating the second edge 52e in the thickness direction. The first edge 22e and the second edge 52e (the first member 21 and the second member 51) are fixed to each other by inserting the bolt 43 (Figure 6) through this hole and tightening it.

Figure 6 is a schematic cross-sectional view showing an enlarged view of part VI in Figure 2 from a different angle. Figure 6 shows the gaskets and other parts omitted in Figure 2 and other figures. A gasket 31 is provided between the first shell 22 and the second shell 52 (i.e., between the first member 21 and the second member 51). More specifically, the gasket 31 is provided between the first edge 22e of the first shell 22 and the second edge 52e of the second shell 52. The gasket 31 is fixed to the first edge 22e by double-sided tape or adhesive. The gasket 31 is provided inward from the bolts 43. By arranging the gasket 31 inward from the bolts 43, it is possible to prevent water from entering the rooftop piping box 1 even if water enters from around the bolts 43.

A gasket 32 is provided between the first member 21 and the base unit 11 (i.e., between the upper unit 81 and the base unit 11). More specifically, the gasket 32 is provided between the skirt 23 and the upper wall 16 of the base unit 11. The gasket 32 is fixed to the rampart 16 by double-sided tape or adhesive. The gasket 32 is provided outboard of the bolts 41. By locating the gasket 32 outboard of the bolts 41, it is possible to prevent water from entering the interior of the rooftop piping box 1 even if water enters between the skirt 23 and the upper wall 16.

In the first member 21, the first shell 22 and the skirt 23 are bonded and fixed with adhesive 35, and a packing 33 is provided between the first shell 22 and the skirt 23. By providing the packing 33, it is possible to prevent moisture from entering between the first shell 22 and the skirt 23. It is also possible to improve the adhesion between the first shell 22 and the skirt 23. The packing 33 is provided inside the bolt 41. However, the position of the packing 33 may be outside the bolt 41. All of the packings 31, 32, and 33 can be made of a rubber material such as chloroprene, but there are no particular restrictions on the material as long as they are effective.

(Use and transportation of rooftop piping boxes)
The rooftop piping box 1 according to the present disclosure is fixedly installed on the rooftop and is not basically moved after installation. After the rooftop piping box 1 is installed, the second member 51 can be removed when performing maintenance of the piping housed inside. When the second member 51 is removed, the upper surface, rear surface, and both side surfaces of the upper unit 81 are partially open (see FIG. 3). Compared with the conventional rooftop piping box, which has a removable lid covering the top surface, the rooftop piping box according to the present disclosure has significantly improved accessibility to the inside of the box.

Furthermore, the rooftop piping box according to the present disclosure is provided with a flange portion 15 on the top of the base unit 11, so that rooftop waterproofing treatment continuing from the rooftop floor surface can be completed up to the base unit 11. Therefore, even if it becomes necessary to replace the entire upper unit, the upper unit replacement work can be carried out without affecting the rooftop waterproofing treatment that has already been performed.

The rooftop piping box according to the present disclosure has a compact form during transportation, making it easy to transport and reducing transportation costs. FIG. 5 is a schematic diagram showing the rooftop piping box 1 partially disassembled and stored. As shown in FIG. 5(a), the rooftop piping box 1 is formed by combining the base unit 11 and the upper unit 81. Also, as shown in FIG. 5(b), the base unit 11 and the upper unit 81 can be separated. Then, as shown in FIG. 5(c), during transportation, the entire base unit 11 can be stored inside the upper unit 81. The base unit 11 is stored inside the upper unit 81 in a state in which it is upside down from when it is installed. When storing the base unit 11 in the upper unit 81, the second member 51 of the upper unit 81 may be removed and the base unit 11 may be inserted from the top of the upper unit 81. As described above, when the second member 51 is removed from the upper unit 81, in addition to the entire top surface, half of the side surface is removed. This makes it easy to store the base unit 11 inside the upper unit 81 and remove it.

(Production method)
The method of manufacturing the rooftop piping box according to the present disclosure is not particularly limited, and can be manufactured using existing manufacturing techniques and manufacturing machines. For example, the base unit 11 can be manufactured using existing steel plate processing techniques such as press processing and welding. The upper unit 81 can be manufactured using existing FRP molding techniques.

In the manufacture of the upper unit 81, it is also preferable to manufacture the first member 21 and the second member 51 using the same mold. Specifically, an FRP material panel is molded using a mold including the shape of the second member 51, and the second member 51 is obtained by post-processing. In addition, the portion of the second member 51 corresponding to the raised portion 56 and the portion corresponding to the outer end of the second edge portion 52e and the skirt portion 52f are cut off. Furthermore, the first member 21 can be obtained by forming a hole in the portion corresponding to the opening 27 of the side wall of the first member 21. The side wall 81A of the upper unit 81 is composed of the first member 21 and the second member 51 having a shape symmetrical in the vertical direction. Therefore, it is possible to manufacture both the first member 21 and the second member 51 from the same mold, which is a great advantage in manufacturing.

(Modification)
The rooftop piping box 1 is an example of a rooftop piping box according to the present disclosure, and various modifications are possible. For example, the side wall of the base unit is not limited to a quadrangular prism (octagonal prism) with the corners cut off. For example, the side wall of the base unit may be a rounded rectangle with rounded corners, or may be a pentagonal prism, a hexagonal prism, or a cylinder. In the base unit, the interior angle between adjacent side walls can be changed within a range greater than 90° and less than 180°. In addition, the flange portion formed on the upper part of the base unit is not limited to one that protrudes outward at a right angle from the upper end of the side wall. For example, the flange portion may be formed by tapering the upper end of the side wall and forming a brim-shaped portion.

The opening in the side wall of the upper unit is not limited to one, and multiple openings may be provided. The position and number of the openings can be changed. For example, the side wall and the top wall of the upper unit may be made of different materials. The second member of the upper unit is not limited to being made of a single material, and a part of the top surface or side surface may be removable. The upper surface of the upper unit may be inclined as a whole. The form of the combination part of the upper unit is not limited to the above. The angle or length of the oblique part can be changed as appropriate. The angle of the oblique part is not particularly limited, but may be, for example, an angle of about 15° to 80° with respect to the horizontal, and typically about 45° to 60°. In addition, the combination part of the first member and the second member may not have an oblique part, and may be a combination part composed of a part extending in the horizontal direction and a part extending in the vertical direction. For example, a step-like combination part may be formed instead of the oblique part. In addition, two or three of the side walls including the four side surfaces may be entirely composed of the first member, and the remaining surfaces may be composed of the second member. Additionally, the combination section may not include a horizontal portion and may be made up of only diagonal portions.

The embodiments disclosed herein are illustrative in all respects and should not be construed as limiting. The scope of the present invention is indicated by the claims rather than the above description, and all modifications within the meaning and scope of the claims are intended.

1 rooftop piping box,
11 base unit, 12 side wall, 12A main side wall, 12B corner wall, 13 leg portion, 13A outer leg portion, 13B inner leg portion, 14, 18 opening, 15 flange portion, 15b lower surface, 16 upper wall, 17 rising portion, 19 peripheral wall,
21 First member, 21A First side wall, 22 First shell, 22a Side wall, 22b Bottom wall, 22e First edge portion, 22s, 52s Front side portion, 22t, 52t Side side portion, 22u, 52u Back side portion, 23 Skirt, 24 Top wall, 25 Side wall, 27, 28 Opening, 31, 32, 33 Gasket, 35 Adhesive, 41, 43 Bolt, 42 Fixing bolt, 45 Hole, 51 Second member, 51A Second side wall, 52 Second shell, 52a Side wall, 52b Top wall, 52e Second edge portion, 52f Skirt portion, 56 Raised portion, 81 Upper unit, 81A Side wall, 81a Top surface, 81c Side surface, 81d Back surface,
100 piping, 110 waterproof sheet, 111 sealing, 112 angle.

Claims (9)

a base unit having an opening at the top and bottom;
an upper unit placed on the base unit, the upper unit having a closed top surface and an opening on a bottom surface;
Equipped with
The upper unit includes:
A first member fixed to the base unit;
a second member fixed to the first member;
Including,
the first member includes a first side wall constituting a side wall of the upper unit,
The second member includes a second side wall constituting the side wall of the upper unit, and a lid portion constituting at least a part of an upper surface of the upper unit.
Rooftop plumbing box. The entire upper unit is made of FRP.
The rooftop piping box according to claim 1 . In the upper unit,
The combination portion of the first member and the second member includes an oblique portion extending obliquely with respect to the horizontal direction,
The rooftop piping box according to claim 1 or 2. The side walls of the base unit include two pairs of main side walls opposed to each other and a corner wall connecting adjacent main side walls,
The interior angle between the main side wall and the corner wall is greater than 90° and less than 180°.
The rooftop piping box according to claim 1 or 2. The base unit has a flange portion at an upper end of the side wall, the flange portion protruding outward relative to the side wall.
The rooftop piping box according to claim 4. The base unit includes:
a top wall extending at a right angle to the side wall and having an opening formed in a central portion thereof,
The upper wall has a rising portion extending upward relative to the upper wall at a periphery of the opening.
The rooftop piping box according to claim 4. The upper unit includes a skirt provided on a lower portion of the upper unit,
The skirt is
a portion that protrudes outward from a side wall of the base unit and that hangs down to cover an upper portion of the base unit;
The rooftop piping box according to claim 1 or 2. In the upper unit,
the first member has a first edge portion that protrudes outward from an upper end of the first side wall that constitutes a side wall of the upper unit,
the second member has a second edge portion protruding outward from a lower end of the second side wall constituting a side wall of the upper unit,
a hole is provided in each of the first edge and the second edge;
With the first edge portion and the second edge portion combined together, a bolt is inserted through the hole and tightened, thereby fixing the first member and the second member to each other.
The rooftop piping box according to claim 1 or 2. With the base unit and the upper unit separated,
The base unit can be entirely housed inside the upper unit.
The rooftop piping box according to claim 1 or 2.

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