Packaging form and method of packaging drainage manifold pipes

Abstract

To provide a drain collecting pipe that does not break when being transported from a manufacturing plant to a construction site.SOLUTION: A drain collecting pipe 100 includes an upper pipe 140 protruding above a floor slab, and a lower pipe 110 bonded to a lower part of the upper pipe 140. The upper pipe 140 includes a resin upper pipe socket member 144 bonded to an upper pipe connection part 143 and a resin horizontal branch pipe socket member 146 bonded to a horizontal branch pipe connection part 142. The drain collecting pipe 100 and the socket members do not break even if being dropped on a horizontal floor surface from a height of 1000 mm or more and 1500 mm or less in a packaged state in which the drain collecting pipe 100 with the upper pipe socket member 144 covered with a half A-type cardboard box 1100 is spaced away by a support member 1200 from an inner surface of an A-type cardboard box 1000 by 30 mm or more and supported by the support member 1200 so that a shaft core becomes substantially horizontal or substantially vertical in the A-type cardboard box 1000.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a resin-made drainage manifold constructed in a through-hole of a floor slab of a building, including an upper pipe protruding above the floor slab, a lower pipe adhered below the upper pipe, and a socket member provided at a connection portion of the upper pipe. In particular, the present invention relates to a drainage manifold having impact resistance satisfying specific conditions. In addition to such a drainage manifold itself, the present invention also includes a packaged drainage manifold, a method for packaging the drainage manifold, and a method for inspecting the impact resistance of the packaged drainage manifold.

Background Art

[0002] Water supply facilities and drainage facilities are provided in apartment houses, office buildings, etc. Among these, the drainage facility typically has a drainage piping structure including a vertical pipe (riser pipe, upper riser pipe, lower riser pipe, upper pipe, lower pipe) penetrating vertically through each floor of the building, a horizontal pipe (horizontal branch pipe, branch pipe) installed within each floor, and a drainage manifold (also referred to as a drainage piping joint, drain pipe joint, drainage collection joint) connecting these.

[0003] And such a drainage manifold includes an upper pipe (main body part, pipe main body) disposed in a through-hole of the floor slab and a lower pipe adhered below the upper pipe when constructed in a building. The upper pipe has an upper pipe connection portion connectable to an upper pipe (upper riser pipe) on the upstream side (upper layer side) at the upper end and a horizontal branch pipe connection portion connectable to a horizontal branch pipe on the side surface. The lower pipe includes a swivel blade (when not for the lowest floor) and a lower pipe connection portion for connecting a lower pipe (lower riser pipe) that drains water to the lower floor, or (when for the lowest floor) includes a reduced diameter portion and a lower pipe connection portion for connecting a leg vent pipe that drains water to a horizontal main pipe (directly or via a separate pipe). Further, such a drainage manifold is widely known as being formed of one or more injection molded products made of resin (typically made of rigid vinyl chloride (PVC)).

[0004] An example of such a resin-made drainage manifold is the drainage pipe joint disclosed in Japanese Patent Application Publication No. 2020-094481 (Patent Document 1). The drainage pipe joint disclosed in Patent Document 1 is formed from one or more resin injection molded products and comprises a pipe body that is placed in a through-hole in the floor slab when installed in a building, an upper riser connection part that protrudes above the floor slab and connects to a drain riser pipe that allows drainage from the upper floor to flow in, a lower riser connection part that protrudes below the floor slab and connects to a drain riser pipe that allows drainage to flow down to the lower floor, and a horizontal branch pipe connection part that connects to a horizontal drain branch pipe above the floor slab, wherein a protrusion is formed on the inner surface of the pipe body between the horizontal branch pipe connection part and the lower riser connection part, and a recess corresponding to the protrusion is formed on the outer surface of the pipe body, and a heat-expandable fire-resistant material is filled in the recess. (Claim 1 of Patent Document 1).

[0005] In the drainage pipe fitting (sometimes referred to as a drainage manifold) disclosed in Patent Document 1, the resin upper pipe socket member, which serves as the connection part for the upper riser pipe, and the resin lateral branch pipe socket member, which serves as the connection part for the lateral branch pipe, are bonded together at the drainage pipe fitting manufacturing plant and then shipped from the manufacturing plant to the construction site (ultimately). Conventional packaging methods for such shipments from the manufacturing plant have involved directly packaging the drainage pipe fitting (drainage manifold) disclosed in Patent Document 1 into cardboard boxes without any packaging or without any cushioning material. However, in unpackaged configurations (where the drainage manifold is exposed and loaded onto a truck bed, etc.) and in packaging methods where the drainage manifold is packed in a cardboard box without cushioning material, the drainage manifold and socket members (especially the riser pipe socket member) tend to be damaged when subjected to impact from drops from the truck bed, etc. To avoid such damage, one could consider preparing a Type A cardboard box with a larger volume than the drainage manifold, placing the manifold inside the box, and filling the gap between the cardboard box and the manifold with cushioning material (bubble wrap, foamed polyurethane, or other petroleum-derived plastic cushioning material). However, this would increase waste at the construction site and reduce the recyclability of the packaging material. Furthermore, even if the manifold is not packaged, or is packaged in a cardboard box without such cushioning material, it is preferable that the manifold and its receiving member are not damaged by the impact received when dropped from a truck bed, etc. (for example, the entire manifold, including the receiving member, is made of a tough resin). However, it is not practical to realize a resin manifold that can completely avoid damage (equipped with a resin receiving member). For example, one reason why this is not practical is that, generally speaking, the impact resistance of a manifold after installation on a floor slab does not need to satisfy the same excessive requirements as the impact resistance during truck transport.

[0006] Furthermore, there are the following problems with cushioning materials (bubble wrap, foamed polyurethane, and other petroleum-derived plastic cushioning materials). The Sustainable Development Goals (SDGs), which form the core of the "2030 Agenda for Sustainable Development" (2030 Agenda) adopted by the United Nations in September 2015, have 17 goals, and Goal 14 (Ocean) is "Conserve and sustainably use marine resources for sustainable development." The background to the setting of Goal 14 (Ocean) is that global marine pollution is becoming serious due to inappropriate waste disposal, etc. Packaging materials, which are marine plastic waste, are one of the causes of this marine pollution. In addition, plastic waste emits greenhouse gases when burned (incinerated), and the raw materials for plastic are petroleum resources that are limited in extraction (packaging materials are also petroleum-derived substances), which are undesirable from the perspective of the 2030 Agenda. Thus, in order to protect the environment, it is required to pack items using environmentally friendly packaging materials.

[0007] From this perspective, while resin-based cushioning materials such as urethane foam and expanded polystyrene have been used conventionally, in recent years, paper-based cushioning materials have been proposed, which are constructed by folding and assembling paper materials such as corrugated cardboard, taking into consideration issues such as disposal after waste and ease of recycling. Although the packaged item (the object to be packaged) is not a drainage manifold, the aim is to provide a paper-based cushioning material that can effectively absorb the impact of a fall and reduce the impact on the packaged item, even when the packaged item is relatively heavy in weight. Japanese Patent Application Publication No. 2008-150114 (Patent Document 2) discloses a paper-based cushioning material constructed by folding and assembling paper materials such as corrugated cardboard, which is used as a protective cushioning material when packaging various parts installed inside photocopiers, printers, etc. [Prior art documents] [Patent Documents]

[0008] [Patent Document 1] Japanese Patent Publication No. 2020-094481 [Patent Document 2] Japanese Patent Publication No. 2008-150114 [Overview of the project] [Problems that the invention aims to solve]

[0009] However, the developing unit of an image forming apparatus such as a copier or printer, which is the subject of packaging in Patent Document 2, is substantially rectangular in shape, and is significantly different in shape from the drainage manifold disclosed in Patent Document 1. Therefore, it is impossible to apply the paper cushioning material disclosed in Patent Document 2 to the drainage manifold. For this reason, when a resin drainage manifold equipped with a resin receiving member is packaged in a cardboard box and shipped from the drainage manifold manufacturing plant... There is a need to realize a drainage manifold that satisfies impact resistance requirements so that even if the cardboard box containing the manifold is dropped during transport to the construction site (for example, from the back of a truck), neither the manifold nor the receiving member will be damaged. However, this has not yet been achieved. Here, the applicant of this application has focused not on improving the impact resistance of the manifold itself alone, but rather on developing a drainage manifold that, as an inventive feature of the "product invention" which is the manifold itself, satisfies specific limiting requirements (conditions) regarding impact resistance in addition to the structural requirements of the product. This will enable the development of a drainage manifold that, even if a resin manifold with a resin receiving member is dropped along with the cardboard box after being shipped from the manifold manufacturing plant, neither the manifold nor the receiving member will be damaged. Generally, drainage manifolds do not need to satisfy the excessive impact resistance requirements for truck transport when installed on a floor slab, unlike the impact resistance requirements for truck transport. Therefore, when transporting them in packaging, the packaging materials and packaging method according to the present invention satisfy the excessive impact resistance requirements for truck transport (of course, this packaging is opened at the construction site). This prevents damage to both the drainage manifold and the receiving member even if the cardboard box is dropped during transport to the construction site (for example, from the back of a truck), and also eliminates the need for excessive impact resistance after installation on a floor slab. This led to the development of a drainage manifold (itself).

[0010] The present invention was developed in view of the above-mentioned problems, and its object is to provide a resin drainage manifold pipe to be placed in a through-hole in the floor slab of a building, wherein the drainage manifold pipe includes an upper pipe protruding above the floor slab and a lower pipe bonded below the upper pipe, the upper pipe includes an upper pipe connection part for connecting an upper pipe that allows drainage from the upper floor to flow in and a resin upper pipe receiving member bonded to the upper pipe connection part, and at least one horizontal branch pipe connection part for connecting a horizontal branch pipe above the floor slab and a resin horizontal branch pipe receiving member bonded to the horizontal branch pipe connection part, and the present invention provides a drainage manifold pipe (itself) that satisfies specific conditions for impact resistance, a packaged drainage manifold pipe, a method for packaged drainage manifold pipes, and a method for testing the impact resistance of packaged drainage manifold pipes. [Means for solving the problem]

[0011] To achieve the above objectives, the drainage manifold (itself), the packaged drainage manifold, the method for packaging the drainage manifold, and the method for testing the impact resistance of the packaged drainage manifold according to the present invention employ the following technical means.

[0012] A drainage manifold (itself) according to one aspect of the present invention is a resin drainage manifold placed in a through-hole in the floor slab of a building, the drainage manifold includes an upper pipe protruding above the floor slab and a lower pipe bonded below the upper pipe, the upper pipe includes an upper pipe connection portion for connecting an upper pipe that allows drainage from an upper floor to flow in and a resin upper pipe receiving member bonded to the upper pipe connection portion, and at least one horizontal branch pipe connection portion for connecting a horizontal branch pipe above the floor slab and a resin horizontal branch pipe receiving member bonded to the horizontal branch pipe connection portion, the drainage manifold having an axial length from the upper end of the horizontal branch pipe connection portion to at least the upper end of the upper pipe receiving member, the drainage manifold having an axial length such that the upper pipe receiving member is covered by a semi-A-type cardboard box, the axis of the drainage manifold is approximately horizontal or approximately vertical The A-type cardboard box is housed in a roughly rectangular parallelepiped shape, and the length, width, and height of the A-type cardboard box are perpendicular to the axial direction of the drain manifold, the axial direction of the lateral branch of the at least one lateral branch pipe connection, and the axial direction of the lateral branch. The length L, width W, and height H of the A-type cardboard box are defined in these directions, with the length L corresponding to the length along the axial center of the housed drain manifold, and the outer diameter of the drain manifold is supported by a support member having a hole corresponding to the outer diameter of the drain manifold, and the support member is provided in a direction perpendicular to the axial center within the A-type cardboard box, so that the drain manifold is supported so that the axial center is roughly horizontal or roughly vertical within the A-type cardboard box, and the A-type cardboard box is used as packaging material. The present invention is characterized in that, in a packing configuration using a cardboard box and the semi-A type cardboard box, or in a packing configuration using the A type cardboard box, the semi-A type cardboard box and the support member as packing material, the A type cardboard box in which the drain manifold pipe is housed is dropped from a predetermined height onto a horizontal floor surface with each face of the substantially rectangular parallelepiped shape horizontal, and in a test in which the A type cardboard box in which the drain manifold pipe is housed is dropped from a predetermined height onto a horizontal floor surface with each face of the substantially rectangular parallelepiped shape not horizontal, it has been confirmed that the drain manifold pipe, including the receiving member, is not damaged.

[0013] The drainage manifold relating to this particular aspect is a resin drainage manifold placed in a through-hole in the floor slab of a building, wherein the drainage manifold includes an upper pipe protruding above the floor slab and a lower pipe bonded below the upper pipe, the upper pipe includes an upper pipe connection part for connecting an upper pipe that allows drainage from the upper floor to flow in and a resin upper pipe receiving member bonded to the upper pipe connection part, and at least one horizontal branch pipe connection part for connecting a horizontal branch pipe above the floor slab and a resin horizontal branch pipe receiving member bonded to the horizontal branch pipe connection part, and is a drainage manifold that satisfies the following <conditions>. <Condition> <Condition 1> The drainage manifold, whose axial length extends from the upper end of the lateral branch pipe connection to at least the upper end of the upper pipe receiving member, is housed in a roughly rectangular parallelepiped A-type cardboard box in a direction in which the axis of the drainage manifold is roughly horizontal or roughly vertical. <Condition 2> The length, width, and height of the A-type cardboard box are perpendicular to the axial direction of the drainage manifold, the axial direction of the lateral branch of the at least one lateral branch pipe connection, and the length L, width W, and height H of the A-type cardboard box defined in these directions are such that the length L corresponds to the length along the axial center of the drainage manifold housed within it, and the outer diameter of the drainage manifold is supported by a support member having a hole corresponding to the outer diameter of the drainage manifold, and the support member is provided in a direction perpendicular to the axial center within the A-type cardboard box, thereby supporting the drainage manifold so that its axial center is approximately horizontal or approximately vertical within the A-type cardboard box. <Condition 3> In a packaging configuration using the A-type cardboard box and the semi-A-type cardboard box as packaging material, or in a packaging configuration using the A-type cardboard box, the semi-A-type cardboard box and the support member as packaging material, the A-type cardboard box in which the drain manifold pipe is housed is dropped from a predetermined height onto a horizontal floor surface with each face of the roughly rectangular parallelepiped shape horizontal, or is dropped from a predetermined height onto a horizontal floor surface with each face of the roughly rectangular parallelepiped shape not horizontal, in either case the drain manifold pipe, including the receiving member, will not be damaged.

[0014] Preferably, the support member is a rectangular corrugated cardboard sheet having two sides corresponding to the height H and the width W, with a hole provided that corresponds to the outer diameter of the drainage manifold, wherein the outer diameter of the drainage manifold is supported by the support member through the hole, and the support member is provided in a direction perpendicular to the axis within the A-type corrugated cardboard box so as to connect opposing surfaces in the width W direction and opposing surfaces in the height H direction, thereby supporting the drainage manifold in a direction where the axis is substantially horizontal or substantially vertical within the A-type corrugated cardboard box, thus configuring the drainage manifold to satisfy the above-mentioned conditions.

[0015] More preferably, the drainage manifold can be configured to satisfy the above-mentioned conditions by being supported by the support member at a distance of 30 mm or more from the inner surface of the A-type cardboard box.

[0016] More preferably, the support member, when unfolded, has two rectangles with holes in a plane having two sides corresponding to the height H and the width W, and either the height H or the width W A member is formed having a shape in which four rectangles are arranged alternately, with two rectangles without holes on a plane having one side corresponding to the given side, and by folding the edges of the boundaries of the arranged rectangles in a mountain fold to create a three-dimensional shape, the member having a hollow rectangular prism shape with holes on two sides is formed to support the drainage manifold, thereby configuring a drainage manifold that satisfies the above <conditions>.

[0017] More preferably, the drainage manifold can be configured to satisfy the above-mentioned conditions by being supported by the support member at a distance of 30 mm or more from the inner surface of the A-type cardboard box.

[0018] More preferably, the drainage manifold can be configured to satisfy the above-mentioned conditions by including a portion made of a resin with excellent impact resistance.

[0019] More preferably, the weight of the drainage manifold can be set to be between 1 kg and 10 kg, thereby satisfying the above-mentioned conditions.

[0020] More preferably, the predetermined height can be set to 1000 mm or more and 1500 mm or less to configure the drainage manifold that satisfies the above conditions. Here, the predetermined height of 1000 mm or more and 1500 mm or less is based on the fact that, during transportation by truck from the manufacturing plant to the construction site of the drainage manifold, (depending on the specifications of the truck) the height of the truck bed is about 1000 mm from the road surface, and including the height of the side panels (fall prevention plates attached with hinges) the height is about 1500 mm from the road surface.

[0021] More preferably, when the length L ≧ 2 × the width W, the surface including the length L among the six surfaces forming the A-type cardboard box is inclined within a range of 70° or more and 74° or less in a side view with respect to the floor surface, and when the length L < 2 × the width W, the surface including the length L is inclined within a range of 62° or more and 66° or less in a side view with respect to the floor surface, and it is made to fall from a predetermined height to a horizontal floor surface without making each surface of the substantially rectangular parallelepiped shape horizontal, so that it can be configured as a drain collecting pipe that satisfies the above <conditions>.

[0022] More preferably, it can be configured as a drain collecting pipe that satisfies the above <conditions> by packing without using petroleum-derived substances for the packaging material.

[0023] In order to achieve the above object, a packed drain collecting pipe according to another aspect of the present invention is characterized by comprising any one of the above packing forms using the above packing material.

[0024] In order to achieve the above object, a method for packing a drain collecting pipe according to still another aspect of the present invention is characterized by packing the drain collecting pipe using the above packing material so as to be in any one of the above packing forms.

[0025] To achieve the above objective, a further aspect of the present invention relates to a method for testing the impact resistance of a packaged drainage manifold, wherein the resin drainage manifold, which is placed in a through-hole in the floor slab of a building, is housed in a Type A cardboard box, and the weight of the drainage manifold is 1 kg or more and 10 kg or less, and the drainage manifold includes an upper pipe protruding above the floor slab and a lower pipe bonded below the upper pipe, the upper pipe includes an upper pipe connection part for connecting an upper pipe that allows drainage from an upper floor to flow in and a resin upper pipe receiving member bonded to the upper pipe connection part, and at least one horizontal branch pipe connection part for connecting a horizontal branch pipe above the floor slab and a resin horizontal branch pipe receiving member bonded to the horizontal branch pipe connection part, and the length of the drainage manifold in the axial direction is from the upper end of the horizontal branch pipe connection part to at least the upper end of the upper pipe receiving member, and the drainage manifold is covered by a semi-Type A cardboard box, the length of the drainage manifold in the axial direction is from the upper end of the horizontal branch pipe connection part to at least the upper end of the upper pipe receiving member. The drainage manifold is housed in a roughly rectangular A-type cardboard box with its axis oriented in a direction that is roughly horizontal or roughly vertical, and the length, width, and height of the A-type cardboard box are perpendicular to the axis direction of the drainage manifold, the axis direction of the transverse branch of the at least one transverse branch pipe connection, and the axis direction of the transverse branch, and the length L, width W, and height H of the A-type cardboard box defined in these directions are such that the length L corresponds to the length along the axis of the drainage manifold in which it is housed, and the box has two sides corresponding to the height H and the width W. A support member is provided on a rectangular cardboard sheet with a hole corresponding to the outer diameter of the drainage manifold, thereby supporting the outer diameter of the drainage manifold through the hole. The support member is positioned within the A-type cardboard box perpendicular to the axis, so as to connect opposing surfaces in the width W direction and opposing surfaces in the height H direction, so that the axis within the A-type cardboard box is approximately horizontal or approximately vertical. The drainage manifold is supported by the support member at a distance of 30 mm or more from the inner surface of the A-type cardboard box, and the packing configuration uses the A-type cardboard box and the semi-A-type cardboard box as packing materials that do not use petroleum-derived substances, or the A-type cardboard box, the semi-A-type cardboard box and the support member as packing materials that do not use petroleum-derived substances, and the packing step of storing the drainage manifold in the A-type cardboard box, and the A-type cardboard box in which the drainage manifold is stored, on each of the substantially rectangular parallelepiped shapes The method is characterized by including: a first dropping step in which the drain manifold is placed horizontally and dropped onto a horizontal floor from a height of 1000 mm to 1500 mm; a second dropping step in which the A-type cardboard box containing the drain manifold is placed on a horizontal floor from a height of 1000 mm to 1500 mm without placing any of the sides of the substantially rectangular parallelepiped horizontal; and a confirmation step after the first and second dropping steps in which the A-type cardboard box is opened and visually inspected to confirm that the drain manifold, including the receiving member, is not damaged.

[0026] Preferably, in the impact resistance testing method described above, when the length L ≥ the width W × 2, the side of the A-type cardboard box that includes the length L is tilted relative to the floor surface by a range of 70 degrees to 74 degrees in a side view, and when the length L < the width W × 2, the side of the box that includes the length L is tilted relative to the floor surface by a range of 62 degrees to 66 degrees in a side view, so that each of the substantially rectangular parallelepiped-shaped sides is not horizontal and is dropped from a predetermined height onto a horizontal floor surface.

[0027] More preferably, in the impact resistance testing method described above, the support member may be configured to support the drainage manifold by forming a member having a hollow rectangular prism shape with holes on two sides, by folding the edges of the boundaries of the continuous rectangles into mountain folds to create a three-dimensional shape.

[0028] More preferably, in the impact resistance testing method described above, the drainage manifold may be configured to include a portion made of a resin with excellent impact resistance. [Effects of the Invention]

[0029] The present invention provides a resin drainage manifold for placement in a through-hole in a floor slab of a building, wherein the drainage manifold includes an upper pipe protruding above the floor slab and a lower pipe bonded below the upper pipe, the upper pipe includes an upper pipe connection portion for connecting an upper pipe that allows drainage from an upper floor to flow in and a resin upper pipe receiving member bonded to the upper pipe connection portion, and at least one horizontal branch pipe connection portion for connecting horizontal branch pipes above the floor slab and a resin horizontal branch pipe receiving member bonded to the horizontal branch pipe connection portion, and provides a drainage manifold (itself), a packaged drainage manifold, a method for packaged drainage manifolds, and a method for testing the impact resistance of a packaged drainage manifold that satisfies specific conditions for impact resistance. It is possible. [Brief explanation of the drawing]

[0030] [Figure 1] This is a perspective view showing a drainage manifold pipe 100 according to an embodiment of the present invention, equipped with an outer layer member 700. [Figure 2] This figure shows a drainage manifold 100 according to an embodiment of the present invention, where (A) is a perspective view showing the pipe filled with thermally expandable fire-resistant material 116, and (B) is a perspective view showing the pipe not filled with thermally expandable fire-resistant material 116. [Figure 3] (A) An exploded view of the drainage manifold 100 shown in Figure 2(B), where (B) is a perspective view of the lower pipe 110 with the pipe wall transparent. [Figure 4] This is a diagram illustrating the packaging configuration of the drainage manifold 100 according to an embodiment of the present invention (Part 1: Single-stage drainage manifold without support members). [Figure 5] This is a diagram illustrating the packaging configuration of the drainage manifold 100 according to an embodiment of the present invention (Part 2: Single-stage drainage manifold with two support members). [Figure 6] This is a diagram illustrating the support member shown in Figure 5. [Figure 7] This is a diagram illustrating the packaging configuration of the drainage manifold 200 according to an embodiment of the present invention (a two-tiered drainage manifold with two support members). [Figure 8] This diagram illustrates the packaging materials shown in Figure 7. [Figure 9] This is a diagram illustrating the support member shown in Figure 8. [Figure 10] Figure 9 is an unfolded view of the support member. [Figure 11] This is an unfolded view of a support member, different from the support member shown in Figure 9. [Figure 12] This is a diagram illustrating a method for testing the impact resistance of packaged drainage manifolds. [Modes for carrying out the invention]

[0031] In the following, the drainage manifold (itself) 100 according to embodiments of the present invention, the packaged drainage manifold 100, the method for packaging the drainage manifold 100, and the method for testing the impact resistance of the packaged drainage manifold 100 will be described in detail with reference to Figures 1 to 12. Here, the drainage manifold according to the present invention refers to a drainage manifold (itself) that is packaged using the packaging materials (Type A cardboard box, semi-Type A cardboard box, support member) described later in the packaging form described later, and that satisfies the conditions for impact resistance (the condition that the drainage manifold, including the receiving member, will not be damaged even if dropped from a predetermined height onto a horizontal floor). In the following description, the terms "outer surface" and "outer surface" and "outer side", "outer layer side" and "outer side" and "outer side", "inner layer side" and "inner side" and "inner side", "thermally expandable fire-resistant material" and "fire-resistant material" and "thermally expandable material", and "itself" and "itself" may not be clearly distinguished in the description. Also, in order to easily understand the present invention, the packaging form may be described by showing a Type A cardboard box (Figures 4 and 7). A-type corrugated cardboard box is a type A corrugated cardboard box 1000 equipped with a lid as shown in Figure 5, while a semi-A-type corrugated cardboard box is a semi-A-type corrugated cardboard box 1100 that does not have a lid as shown in Figure 5. Furthermore, although the present invention is not limited, the A-type corrugated cardboard box 1000 uses material K5 and a double flute (WF) construction, and the semi-A-type corrugated cardboard box 1100 uses material K6 and a double flute (WF) construction. The material refers to the strength (strength of the front and back paper) of the liner, which is the paper part that sandwiches the core (the corrugated part) from the front and back when the corrugated cardboard is viewed from the side. There are two types of material, C, which contains a lot of recycled paper, and K, which contains a lot of virgin pulp. Material K is further distinguished by weight into K5 and K6, with K5 being the standard product and K6 being stronger than K5. The "composition" refers to the thickness of the corrugated cardboard. There are three types: A-flute, approximately 5mm thick (most commonly used for outer packaging); B-flute, approximately 3mm thick (commonly used for small boxes and lightweight items); and WF (double-flute, made by layering A-flute and B-flute, commonly used for heavy items), approximately 8mm thick. The A-type corrugated cardboard box 1000 and the semi-A-type corrugated cardboard box 1100 use double-flute (WF) construction to increase strength.

[0032] Hereinafter, a drainage manifold pipe 100 according to an embodiment of the present invention will be described in detail with reference to the drawings. As shown in Figures 1 to 3, the drainage piping structure using this drainage manifold 100 comprises a structure in which a non-fire-resistant resin drainage manifold 100, installed in a through-hole that penetrates the floor slab vertically in the building, is connected to a resin drainage riser (an upper-floor drainage riser that allows drainage from the upper floor to flow in (not shown, and sometimes simply referred to as the upper pipe) and a lower-floor drainage riser that allows drainage to flow down to the lower floor (not shown, and sometimes simply referred to as the lower pipe)) that is connected to the drainage manifold 100. Here, "non-fire-resistant" refers to a property that allows deformation, melting, or combustion due to the heat caused by a fire in the building, and resin materials are an example of this.

[0033] The drainage manifold 100 is made of, for example, polyvinyl chloride, polyethylene, polybutene, polypropylene, or nylon. As shown in Figure 3(A), the drainage manifold 100 is made of one or more (in this example, six in total: an upper pipe 140, a lower pipe 110, an upper pipe receiving member 144, and three lateral branch pipe receiving members 146) injection-molded resin parts. As shown in Figures 1 to 3, the drainage manifold 100 is a resin drainage manifold placed in a through-hole in the floor slab of a building, and the drainage manifold 100 includes an upper pipe 140 that protrudes above the floor slab, and lower pipes 110 that are bonded below the upper pipe 140. The upper pipe 140 includes an upper pipe connection section 143 to which an upper pipe receiving member 144 for connecting an upper pipe that brings in drainage from the upper floor is bonded, and at least one (in this case, three) horizontal branch pipe connection sections 142 to which horizontal branch pipe receiving members 146 for connecting horizontal branch pipes above the floor slab is bonded. The lower pipe 110 includes a lower pipe connection section for connecting a lower pipe that discharges drainage to the lower floor. Resin receiving members (more specifically, the upper pipe receiving member 144 and the horizontal branch pipe receiving member 146) are bonded to the upper pipe connection section 143 and the horizontal branch pipe connection section 142, respectively. As will be described later, in the drainage manifold according to the present invention, the drainage manifold may have a lower pipe (lower floor side drainage riser) located further below the lower pipe 110, or an upper pipe (upper floor side drainage riser) located further above the upper pipe 140.

[0034] In cases where the drainage manifold 100 is not for the lowest floor, as shown in Figures 3(A) and 3(B), as an example, a swivel vane 114 is formed above the lower end of the lower pipe 110, projecting onto the inner surface of the lower pipe 110. A recess 112 corresponding to this projection (in this case, the swivel vane 114) is formed on the outer surface of the lower pipe 110, and a heat-expandable fire-resistant material 116 is filled into this recess 112.

[0035] Here, although not limited to this, the heat-expandable fire-resistant material 116 is formed in a putty-like state and is filled in such a way that the recess 112 on the outer surface of the lower pipe 110 of the drain manifold pipe 100 is filled to approximately the outer diameter of the lower pipe 110 (an amount sufficient to achieve the desired fire resistance). Therefore, the outer diameter of the lower pipe 110 of the drain manifold pipe 100 is approximately the same as that of a conventional drain pipe fitting. In this way, as shown in Figure 2(B), the heat-expandable fire-resistant material 116 itself (pure, not resin-containing) is filled into the recess 112 corresponding to the protruding part (swivel vane 114).

[0036] When such a drainage manifold 100 is installed in a through-hole that penetrates the floor slab of a building vertically, as shown in Figure 1, the recess 112 of this projection (swirl vane 114) is formed so that, when installed in the building, at least a part of it corresponds to at least a part of the range from the upper end to the lower end of the floor slab. Note that this projection is not limited to a swirl vane 114, but may be a flow deflection plate or the like, as long as it is a part that changes the flow of drainage within the drainage manifold 100, and is not limited to a swirl vane or a flow deflection plate, as long as a recess 112 corresponding to the outer surface of the lower pipe 110 is formed.

[0037] Furthermore, it is preferable that the outer layer of the heat-expandable fire-resistant material 116 be covered by an outer layer member 700 having fire-resistant and vibration-suppressing properties, which is wrapped around the outer circumference of the lower pipe 110 in a cylindrical shape. Furthermore, this outer layer member 700 may cover the lower part of the upper pipe 140 in a cylindrical shape. This outer layer member 700 has, for example, a three-layer structure and is provided to cover the outer surface of the lower pipe 110, including cases where it covers the lower part of the upper pipe 140 of the drain manifold pipe 100, in the order of vibration damping material, vibration insulator formed of fire-resistant inorganic fibers, and sound insulation cover from the outer surface of the drain manifold pipe 100. As an example, the innermost vibration damping material is formed from a butyl-based (butyl rubber, etc.) or asphalt-based (rubber asphalt, modified asphalt, etc.) material, the outermost sound insulation cover is formed from a rubber-based (EPDM (ethylene propylene diene rubber), etc.), elastomer-based or resin-based material (it may be made of hard PVC as well as soft materials such as rubber), and the intermediate vibration insulator formed from fire-resistant inorganic fibers is made from an aggregate of fire-resistant inorganic fibers (glass wool, rock wool or ceramic fiber, etc.). Furthermore, it is preferable that there are portions in the innermost layer where a thermally expandable fire-resistant material is provided instead of a vibration-damping material. That is, the three-layer outer layer member 700 is composed of a thermally expandable fire-resistant material or vibration-damping material in the innermost layer, a vibration insulator in the intermediate layer, and a sound-insulating cover in the outermost layer. However, the fact that the outer layer member has a three-layer structure or is formed from such materials is not limited in this invention.

[0038] As shown in Figure 3(A), the upper pipe 140 of this drainage manifold 100 is composed of a water collection chamber (not indicated) having an upper pipe connection section 143 for connecting the upper pipe via an upper pipe socket member 144 and three lateral branch pipe connection sections 142 for connecting lateral branch pipes via lateral branch pipe socket members 146 at 90° intervals when viewed from above, an upper pipe socket member 144 and three lateral branch pipe socket members 146. Here, the number of lateral branch pipe connection sections is not limited, and although not limited, the lateral branch pipe socket members 146 may connect the lateral branch pipes without reducing their diameter (as shown in the diagram) or they may connect the lateral branch pipes with reduced diameter.

[0039] Furthermore, the drain manifold 100 is formed in the manufacturing plant of the drain manifold 100 from six resin injection molded products shown in Figure 3(A), as described above, and the joints between these separate injection molded products shown in Figure 3(A) are bonded together with adhesive. Here, although it is not directly related to the present invention, in Figure 3(A), the letter M immediately following the numeral in the reference numeral means the male side, and the letter F means the female side. Note that the present invention is not limited to the number and shape of the injection molded products constituting the drain manifold, but it is preferably applied to a drain manifold having the following configuration.

[0040] The drainage manifold according to the present invention has the following configuration. The drainage manifold 100 is a resin drainage manifold installed in a through-hole in the floor slab of a building, as shown in Figure 1. As shown in Figures 1 to 3, the drainage manifold 100 includes an upper pipe 140 that protrudes above the floor slab, a lower pipe 110 bonded below the upper pipe 140, and an outer layer member 700 consisting of at least two layers (three layers in this case) provided on the outer circumference of the drainage manifold 100 from below the branch (this branch refers to the vicinity directly below the lateral branch pipe connection part 142 of the upper pipe 140) to the lower pipe 110. However, this outer layer member 700 is an optional configuration in the drainage manifold according to the present invention. The upper pipe 140 includes an upper pipe connection part 143 for connecting an upper pipe that allows drainage from the upper floor to flow in, and a resin upper pipe receiving member 144 bonded to the upper pipe connection part 143, and at least one (in this case, three) horizontal branch pipe connection parts 142 for connecting horizontal branch pipes above the floor slab, and a resin horizontal branch pipe receiving member 146 bonded to the horizontal branch pipe connection part 142. Furthermore, in the drainage manifold according to the present invention, the drainage manifold may also be provided with a rubber ring on the upper pipe receiving member 144 and a rubber ring on the horizontal branch pipe receiving member 146 (as an optional configuration). Moreover, in the drainage manifold according to the present invention, the drainage manifold may also be provided with a lower pipe (lower floor side drain riser) further below the lower pipe 110, or with an upper pipe (upper floor side drain riser) further above the upper pipe 140. Here, it is preferable that the weight of the drainage manifold according to the present invention is between 1 kg and 10 kg, and that it satisfies the <conditions> described later.

[0041] Furthermore, the drainage manifold according to the present invention is a drainage manifold (itself) that satisfies the following conditions: <Condition 1>, <Condition 2>, and <Condition 3>. As an example of the drainage manifold according to the present invention, in this embodiment, a single-stage drainage manifold 100 shown in Figures 1 to 5 and a two-stage drainage manifold 200 shown in Figure 7 are exemplified. In the following, matters common to the drainage manifold 100 and the drainage manifold 200 will be explained using the drainage manifold 100 as a representative example. For a drainage manifold 100 with a short axial length, the support member described later may be used as shown in Figure 4 or as shown in Figure 5. For a drainage manifold with an axial length longer than the drainage manifold 100 (a multi-stage manifold including a two-stage manifold), it is preferable to use a support member (at least at two locations, top and bottom) as shown in Figures 7 and 8 described later. Furthermore, as shown in Figures 5 and 6, the support member 1200 (support member 1210) has a flat plate shape made from a single sheet of corrugated cardboard, and as shown in Figures 7 to 11, the support members 1300 (support member 1310) and 1400 (support member 1410) have a hollow rectangular prism shape formed by folding a flat corrugated cardboard sheet, but the support members are not limited to these shapes. Moreover, if support members are to be used, the support members 1300 (support member 1310) and 1400 (support member 1410) having a hollow rectangular prism shape may be used in the packaging configuration shown in Figure 5, or the support member 1200 (support member 1210) having a flat plate shape may be used in the packaging configuration shown in Figures 7 and 8.

[0042] <Condition 1> The drain manifold pipe 100, whose upper pipe receiving member 144 is covered by a semi-A-type cardboard box 1100 whose length in the axial direction of the drain manifold pipe 100 (the axial direction of this drain manifold pipe is the direction shown in Figure 3) extends at least from the upper end of the horizontal branch pipe connection part 142 to the upper end of the upper pipe receiving member 144, is housed in an A-type cardboard box 1000 that is roughly rectangular in shape, with the axis of the drain manifold pipe 100 being roughly horizontal (the state shown in Figure 4(A)) or roughly vertical (the state shown in Figure 4(B)). Here, "from the upper end of the horizontal branch pipe connection part 142 to the upper end of the upper pipe receiving member 144" also includes the case where it is approximately the same position as "from the contact point between the lower end of the upper pipe receiving member and the upper pipe to the upper end of the upper pipe receiving member 144". The semi-A-type cardboard box 1100 will cover at least from the upper end of the horizontal branch pipe connection part 142 to the upper end of the upper pipe receiving member 144. Thus, it is preferable that the semi-A-type cardboard box 1100 completely covers the upper pipe receiving member 144.

[0043] <Condition 2> As shown in Figure 4 or Figure 5, the length, width, and height directions of the A-type cardboard box 1000 are set to be perpendicular to the axial direction of the drain manifold pipe 100, the axial direction of the lateral branch of at least one lateral branch pipe connection 142, and the axial direction of the lateral branch. The length L, width W, and height H of the A-type cardboard box 1000 defined in these directions are such that the length L corresponds to the length along the axial center of the stored drain manifold pipe 100, and a support member (support member 1200 and support member 1210 in Figure 5, support member 1300 and support member 1310 in Figures 7 and 8) is provided with a circular hole corresponding to the outer diameter of the drain manifold pipe 100 as needed (this is an arbitrary configuration). The outer diameter of the drain manifold pipe is supported by the hole, and the support member is provided in a direction perpendicular to the axial center within the A-type cardboard box, so that the drain manifold pipe is supported within the A-type cardboard box so that the axial center is approximately horizontal or approximately vertical. In the present invention, the support members are of an arbitrary configuration. Examples of such support members include, as shown in Figure 5, support members 1200 and 1210, formed from a corrugated cardboard sheet with a thickness t (mm) and having a hole 1202, and support members 1300 and 1312, formed from a rectangular corrugated cardboard box (hollow rectangular prism shape) and having a hole 1302, and support members 1310 and 1312, respectively. These support members are preferably provided in at least two locations (including two or more locations) at the top and bottom to avoid a cantilevered state of the drain manifold pipes 100 and 200 within the A-type corrugated cardboard box 1000. In this case, the holes have a diameter corresponding to the outer diameter of the drain manifold pipe at the position where the support member is provided, and the support members ensure that the axis of the drain manifold pipe is approximately horizontal or approximately vertical within the A-type corrugated cardboard box. The manifold pipe is supported. Here, the illustrated support member has a circular hole that matches the outer shape of the manifold pipe, but the present invention is not limited to the shape of the hole provided in the support member being circular, and may have a shape other than circular, including a square corresponding to the outer diameter of the manifold pipe. Furthermore, although the illustrated support member has a circular hole that matches the outer shape of the manifold pipe, the present invention is not limited to support members having such (circular and non-circular) holes. For example, it may be a platform made by stacking multiple layers of cardboard (boards) without holes, or it may be a platform made by stacking multiple layers of cardboard (boards) with notches that match the outer shape of the manifold pipe instead of holes. In this case as well, it is preferable in that it has sufficient strength to support the manifold pipe, similar to the illustrated support member, and does not use petroleum-derived materials. In the following, when a matter is common to support member 1200 and support member 1210, support member 1200 will be used as the representative; when a matter is common to support member 1300 and support member 1310, support member 1300 will be used as the representative; and when a matter is common to support member 1300 (and support member 1310) and support member 1400 (and support member 1410), support member 1300 will be used as the representative.

[0044] <Condition 3> As shown in Figures 4, 5 and 7, the A-type cardboard box 1000 containing the drainage manifold, packaged using an A-type cardboard box 1000 and a semi-A-type cardboard box 1100 as packaging materials (Figure 4), or using an A-type cardboard box 1000, a semi-A-type cardboard box 1100 and support members (support members 1200 and 1210 or support members 1300 and 1310) as packaging materials (Figures 5 and 7), is made into a roughly rectangular parallelepiped shape as shown in Figure 12. Includes height H and width W Even when the surface is horizontal and dropped from a predetermined height onto a horizontal floor (as shown in Figures 12(A) and 12(B) which illustrate a drop without offset), and even when the object is roughly rectangular in shape, Includes height H and width WEven if the pipe is dropped onto a horizontal floor from a predetermined height without the surface being horizontal (as shown in Figures 12(C) and 12(D) illustrating an offset drop), the drainage manifold, including the receiving members (upper pipe receiving member 144, lateral branch pipe receiving member 146), will not be damaged in any case. The drainage manifold according to the present invention is characterized by being a drainage manifold that satisfies these conditions. That is, the drainage manifold according to the present invention is characterized by being a drainage manifold (itself) that satisfies <Condition 3> when packed in the above-described packaging form using the above-described packaging materials in order to satisfy <Condition 1> and <Condition 2>. In addition, in the packaging configurations shown in Figures 4, 5, 7, and 8 (especially in the packaging configuration shown in Figure 4, which does not use a support member), it is preferable that the surface of the semi-A-type cardboard box 1100 facing the opening (the upper surface covering the upper pipe receiving member 144) is in contact with the inner surface of the A-type cardboard box 1000, and that the lowest end of the drainage manifold pipe 100 (in this case, the lower end surface of the lower pipe 110) is in contact with the inner surface of the A-type cardboard box 1000.

[0045] Furthermore, the present invention applies to a drainage manifold (itself) in which injection-molded resin products including a receiving member are bonded together and packaged in the above-described packaging form using the above-described packaging materials, as well as, as described later, the packaged drainage manifold 100, a method for packaging the drainage manifold 100, and a method for testing the impact resistance of the packaged drainage manifold 100.

[0046] From here, we will explain the above conditions in more detail. First, we will explain <Condition 2>. As shown in Figures 5 and 6, the support members 1200 and 1210 are rectangular corrugated cardboard boards with two sides corresponding to the height H and width W, and are provided with circular holes (holes 1202 and 1212) corresponding to the outer diameter of the drain manifold pipe 100. The outer diameter of the drain manifold pipe 100 is supported by these support members 1200 and 1210 through the holes, and the support members 1200 and 1210 are positioned within the A-type corrugated cardboard box 1000 such that they connect opposing surfaces in the width W direction and opposing surfaces in the height H direction, with respect to the axis and vertical. By providing a support member in a perpendicular direction, the drain manifold 100 can be supported within the A-type cardboard box 1000 in a direction where its axis is approximately horizontal or approximately vertical, thereby configuring it as a drain manifold that satisfies the above-mentioned conditions. More specifically, as shown in Figures 5 and 6, the length of the short side 1200H of the support member 1200 corresponds to the height H of the A-type cardboard box 1000, and the long side 1200W abuts against the lid and bottom of the A-type cardboard box 1000, so that the support member 1200 connects opposing surfaces in the height H direction of the A-type cardboard box 1000. Furthermore, as shown in Figure 5, the length of the long side 1200W of the support member 1200 corresponds to the width W of the A-type cardboard box 1000, and the short side 1200H abuts against both sides of the A-type cardboard box 1000, so that the support member 1200 connects opposing surfaces of the A-type cardboard box 1000 in the width W direction. Note that the lengths of the long side and the short side may be reversed. By using such a support member 1200 as packaging material to realize a packaging form (packaging the drainage manifold 100), the drainage manifold 100 can be configured as a drainage manifold that satisfies the above <conditions> by being supported by the support member 1200 at a distance of 30 mm or more from the inner surface of the A-type cardboard box 1000.

[0047] Next, we will explain condition 2, which involves using support members 1300 and 1310, which are different from support members 1200 and 1210, as packaging materials to achieve the packaging configuration (packaging the drainage manifold 200). As shown in Figures 7 to 11, the support members 1300 and 1310, when unfolded, have a shape consisting of four consecutive rectangles, each alternating between two rectangles 1306 with holes (hole portion 1302, hole portion 1312) in a plane having two sides corresponding to height H and width W, and two rectangles 1304 without holes in a plane having one side corresponding to either height H or width W (in Figure 10, a rectangle consisting of one side corresponding to height H and the other side of length L(1); in Figure 11, a rectangle consisting of one side corresponding to width W and the other side of length L(1)). By folding the edges of the boundaries of the consecutive rectangles into mountain folds to create a three-dimensional shape, a member is formed that has an opening width L(1) and a hollow rectangular prism shape with holes on two sides, thereby supporting the drainage manifold and thus being configured as a drainage manifold that satisfies the above <conditions>. More specifically, as shown in Figures 7 to 10, the length of the other side of the support member 1300, separate from L(1) on the short side 1300H, corresponds to the height H of the A-type corrugated cardboard box 1000, and the long side 1300W abuts against the lid and bottom of the A-type corrugated cardboard box 1000, so that the support member 1300 connects opposing surfaces of the A-type corrugated cardboard box 1000 in the height H direction. Also, as shown in Figures 7 to 10, the length of the long side 1300W of the support member 1300 corresponds to the width W of the A-type corrugated cardboard box 1000, and the short side 1300H abuts against both sides of the A-type corrugated cardboard box 1000, so that the support member 1300 connects opposing surfaces of the A-type corrugated cardboard box 1000 in the width W direction. Note that the lengths of the long side and the short side may be reversed. By using such a support member 1300 as packaging material to realize a packaged form (packaging the drainage manifold 100), the drainage manifold 100 can be supported by the support member 1300 at a distance of 30 mm or more from the inner surface of the A-type cardboard box 1000, thereby being configured as a drainage manifold that satisfies the above-mentioned conditions.Note that the support member 1300 shown in Figure 10 has an opening in the height H direction, while the support member 1400 shown in Figure 11 differs only in that its opening is in the width W direction; therefore, the support member 1400 will not be described in detail here. Also, in Figure 9, the position and diameter of the hole 1302 shown by the solid line (shown on the right) and the position and diameter of the hole 1302 shown by the dotted line (shown on the left) coincide as long as the axes and outer diameters of the two locations on the drain manifold separated by a length L(1) coincide (unless it is a reduced diameter section, etc.) (the same applies to hole 1312, hole 1402, and hole 1412). Furthermore, as shown in Figures 10 and 11, in order to easily realize the hollow rectangular prism shape of these support members 1300 (and support member 1310) and support member 1400 (and support member 1410), fitting the fitting projection 1302 into the fitting hole portion 1308 is preferable because it allows the drainage manifold to be packaged with packaging materials that do not contain petroleum-derived substances, without using adhesive tapes or the like which may contain petroleum-derived substances.

[0048] Furthermore, it is also preferable that a drainage manifold that satisfies the above conditions be configured such that it includes a portion made of a resin with excellent impact resistance, or that its weight is between 1 kg and 10 kg. In this case, if a damaged portion can be identified as a result of repeated drop tests under the above conditions as part of a sampling inspection or performance inspection of a prototype (especially as a result of repeated drop tests in various directions and inclinations with and without offset as shown in Figure 12), it is also preferable to use a resin with excellent impact resistance only in the damaged portion (for example, only the upper pipe 140 or only the receiving member, rather than the entire drainage manifold), so that the drainage manifold (including the receiving member) includes a portion made of a resin with excellent impact resistance. Note that, since the drainage manifold according to the present invention includes a portion made of a resin with excellent impact resistance, the entire drainage manifold including the receiving member may be molded from a resin with excellent impact resistance.

[0049] Furthermore, regarding <Condition 3>, it is also preferable to configure the drainage manifold to satisfy the above conditions by setting the predetermined height to 1000 mm or more and 1500 mm or less. Also, regarding <Condition 3>, if length L ≥ width W × 2, the surface containing length L among the six surfaces forming the A-type cardboard box 1000 is tilted to the floor surface in a range of 70 deg to 74 deg when viewed from the side, and if length L < width W × 2, the surface containing length L is tilted to the floor surface in a range of 62 deg to 66 deg when viewed from the side, to form a roughly rectangular parallelepiped shape. Includes height H and width W It is also preferable to configure the drainage manifold to satisfy the above conditions by dropping it onto a horizontal (hard) floor surface from a predetermined height without making the surface horizontal. The drop conditions preferably used for this <Condition 3> are shown in Figure 12. Figures 12(A) and 12(B) are diagrams to explain the non-offset drop conditions, and Figures 12(C) and 12(D) are diagrams to explain the offset drop conditions. Note that, as shown in Figure 12(D), it is acceptable for the A-type cardboard box 1000 to be twisted relative to the floor surface, with the bottom surface of the A-type cardboard box 1000 visible.

[0050] Furthermore, with respect to <Condition 1> and <Condition 2>, it is also preferable to construct a drainage manifold that satisfies the above conditions by packaging without using petroleum-derived substances in the packaging materials (Type A cardboard box 1000, semi-Type A cardboard box 1100, support member 1200, etc.).

[0051] As described above, a drainage manifold made of resin, which is placed in a through-hole in the floor slab of a building, can be provided, wherein the drainage manifold includes an upper pipe protruding above the floor slab and a lower pipe bonded below the upper pipe, and the upper pipe includes an upper pipe connection part for connecting an upper pipe that allows drainage from the upper floor to flow in, and a resin upper pipe receiving member bonded to the upper pipe connection part, and at least one horizontal branch pipe connection part for connecting a horizontal branch pipe above the floor slab and a resin horizontal branch pipe receiving member bonded to the horizontal branch pipe connection part, thereby providing a drainage manifold (itself) that satisfies the above-mentioned <conditions>.

[0052] The packaged drainage manifold according to the present invention is a drainage manifold packaged using the above-mentioned packaging materials (Type A cardboard box 1000 and semi-Type A cardboard box 1100, and optional support members 1200 (support member 1210), support member 1300 (support member 1310), and support member 1400 (support member 1410)) to have any of the above-mentioned packaging configurations. This makes it possible to provide the packaged drainage manifold according to the present invention.

[0053] The method for packaging a drainage manifold according to the present invention involves packaging the drainage manifold using the above-mentioned packaging materials (Type A cardboard box 1000 and semi-Type A cardboard box 1100, and optional support members 1200 (support member 1210), support member 1300 (support member 1310), and support member 1400 (support member 1410)) to achieve any of the above-mentioned packaging configurations. This is the method. This allows us to provide a method for packaging drainage manifold pipes according to the present invention.

[0054] The impact resistance testing method for packaged drainage manifolds according to the present invention (hereinafter sometimes simply referred to as the impact resistance testing method) will be described in detail below. The impact resistance testing method according to the present invention tests the impact resistance of a drainage manifold equipped with the above-described configuration (a drainage manifold formed from six resin injection molded products including a receiving member) according to the steps corresponding to the above-described <Condition 1>, <Condition 2>, and <Condition 3>, including a <preparation step> in which the drainage manifold is prepared in a packaged form using the above-described packaging materials. In the following, explanations common to the impact resistance test of the drainage manifold 100 shown in Figure 4 (prepared in a single stage without a support member), the impact resistance test of the drainage manifold 100 shown in Figure 5 (prepared in a single stage with a support member), and the impact resistance test of the drainage manifold 200 shown in Figures 7 and 8 (prepared in two stages with a support member) may be explained by referring to one of them. Here, it is preferable that the impact resistance testing method according to the present invention be performed as a sampling inspection or performance test of prototypes, rather than being performed on all products at the time of product shipment.

[0055] Here, the drainage manifold that is the subject of the impact resistance test method according to the present invention is, as described above, a resin drainage manifold that is placed in a through-hole in the floor slab of a building, and includes an upper pipe 140 that protrudes above the floor slab and a lower pipe 110 that is bonded below the upper pipe 140, and the upper pipe 140 includes an upper pipe connection part 143 for connecting an upper pipe that allows drainage from the upper floor to flow in, a resin upper pipe receiving member 144 bonded to the upper pipe connection part 143, and at least one (in this case three) horizontal branch pipe connection parts 142 for connecting horizontal branch pipes above the floor slab and a resin horizontal branch pipe receiving member 146 bonded to the horizontal branch pipe connection part 142, and is a drainage manifold that weighs 1 kg or more and 10 kg or less.

[0056] <Preparation Step 1> The drain manifold 100 or drain manifold 200 (in the following description of the inspection method, the drain manifold 100 may be used as a representative) is placed in a roughly rectangular A-type cardboard box 1000, with the upper pipe receiving member 144 covered by a semi-A-type cardboard box 1100 whose axial length (the axial direction of this drain manifold is the direction shown in Figure 3) extends from the upper end of the horizontal branch pipe connection part 142 to at least the upper end of the upper pipe receiving member 144, so that the axis of the drain manifold 100 is roughly horizontal (as shown in Figure 4(A)) or roughly vertical (as shown in Figure 4(B)). Here, as mentioned above, "from the upper end of the horizontal branch pipe connection part 142 to the upper end of the upper pipe receiving member 144" also includes the case where it is approximately the same position as "from the contact point between the lower end of the upper pipe receiving member and the upper pipe to the upper end of the upper pipe receiving member 144". The semi-A-type cardboard box 1100 will cover at least from the upper end of the horizontal branch pipe connection portion 142 to the upper end of the upper pipe receiving member 144. In this way, it is preferable that the semi-A-type cardboard box 1100 completely covers the upper pipe receiving member 144. Furthermore, in the packaging configurations shown in Figures 4, 5, 7, and 8 (especially in the packaging configuration shown in Figure 4, which does not use a support member), it is preferable that the surface of the semi-A-type cardboard box 1100 facing the opening (the upper surface covering the upper pipe receiving member 144) abuts against the inner surface of the A-type cardboard box 1000, and that the lowest end of the drain manifold pipe 100 (here, the lower end surface of the lower pipe 110) abuts against the inner surface of the A-type cardboard box 1000. The <Preparation Step 1> prepares the drain manifold pipe 100 or drain manifold pipe 200 so that it can be packaged in this manner.

[0057] <Preparation Step 2> As shown in Figure 4, the length, width, and height of the A-type cardboard box 1000 are set to be perpendicular to the axial direction of the drain manifold pipe 100, the axial direction of the lateral branch of at least one lateral branch pipe connection 142, and the axial direction of the lateral branch. The length L, width W, and height H of the A-type cardboard box 1000 defined in these directions are set such that the length L corresponds to the length along the axial direction of the drain manifold pipe 100 to be housed, and a support member is provided with a circular hole corresponding to the outer diameter of the drain manifold pipe 100 as needed (this is an arbitrary configuration) to support the drain manifold pipe. The outer diameter of the pipe is supported by a hole, and a support member is provided inside the A-type cardboard box in a direction perpendicular to the axis, so that the drain manifold pipe is supported inside the A-type cardboard box so that the axis is approximately horizontal or approximately vertical. This support member is an arbitrary configuration in the present invention, and examples of this support member include, as shown in Figure 5, a support member 1200 with a hole 1202 and a support member 1210 with a hole 1212, which are formed from a cardboard sheet with a thickness t (mm), and as shown in Figure 7, a support member 1300 with a hole 1302 and a support member 1310 with a hole 1312, which are formed from a rectangular cardboard box (hollow rectangular prism shape). It is preferable to provide these support members in at least two locations (including two or more locations) above and below to avoid a cantilevered state of the drain manifold pipe 100 and the drain manifold pipe 200 inside the A-type cardboard box 1000. In this case, the hole has a diameter corresponding to the outer diameter of the drainage manifold at the position where the support member is provided, and the drainage manifold is supported by this support member so that its axis is approximately horizontal or approximately vertical within the A-type cardboard box. In this case, the drainage manifold 100 is supported at a distance of 30 mm or more from the inner surface of the A-type cardboard box 1000, regardless of the presence or absence of the support member. The drainage manifold is prepared in this <preparation step 2> so that it can be packaged in this manner.

[0058] <Storage Step> The drainage manifold is stored in the A-type cardboard box 1000 using A-type cardboard boxes 1000 and semi-A-type cardboard boxes 1100 as packaging materials that do not use petroleum-derived substances, or using A-type cardboard boxes 1000, semi-A-type cardboard boxes 1100 and support members 1200, etc., as packaging materials that do not use petroleum-derived substances.

[0059] <First Dropping Step> The A-type cardboard box 1000 containing the drainage manifold is placed in a roughly rectangular parallelepiped shape as shown in Figures 12(A) and 12(B). Includes height H and width WThe cardboard box is dropped from a height of 1000mm to 1500mm onto a horizontal (hard) floor with its surface horizontal. In this case, if the Type A cardboard box falls while maintaining its orientation, as shown in Figures 12(A) and 12(B), the Type A cardboard box will... Includes height H and width W The surface will collide with a horizontal (hard) floor surface.

[0060] <Second Dropping Step> The A-type cardboard box 1000 containing the drainage manifold is placed in a roughly rectangular parallelepiped shape as shown in Figures 12(C) and 12(D). Includes height H and width W The cardboard box is dropped (offset) onto a horizontal (hard) floor from a height of 1000 mm to 1500 mm without its surface being horizontal. In this case, if the Type A cardboard box falls while maintaining its inclination, the corner where any two consecutive faces of the Type A cardboard box intersect will hit the horizontal (hard) floor in the case shown in Figure 12(C), and the corner where three faces of the Type A cardboard box intersect will hit the horizontal (hard) floor in the case shown in Figure 12(D).

[0061] <Confirmation Step> After the first and second dropping steps, open the A-type cardboard box 1000 and visually confirm that the drainage manifold pipe 100, including the receiving members (upper pipe receiving member 144, lateral branch pipe receiving member 146), is not damaged.

[0062] The impact resistance testing method described above, consisting of <Preparation Step 1>, <Preparation Step 2>, <Storage Step>, <First Drop Step>, <Second Drop Step>, and <Confirmation Step>, provides the impact resistance testing method for packaged drainage manifolds according to the present invention.

[0063] As described above, according to this embodiment, a resin drainage manifold is provided to be placed in a through-hole in the floor slab of a building, the drainage manifold includes an upper pipe protruding above the floor slab and a lower pipe bonded below the upper pipe, the upper pipe includes an upper pipe connection part for connecting an upper pipe that allows drainage from the upper floor to flow in and a resin upper pipe receiving member bonded to the upper pipe connection part, and at least one horizontal branch pipe connection part for connecting horizontal branch pipes above the floor slab and a resin bonded to the horizontal branch pipe connection part This embodiment provides a drainage manifold (itself) that includes a resin-based lateral branch pipe receiving member and satisfies specific conditions for impact resistance. Furthermore, this embodiment provides a packaged drainage manifold, a method for packaged drainage manifolds, and a method for testing the impact resistance of packaged drainage manifolds.

[0064] It should be noted that the embodiments disclosed herein are illustrative and not restrictive in all respects. The scope of the present invention is indicated by the claims rather than by the foregoing description, and all modifications within the meaning and scope equivalent to the claims are intended to be included. [Industrial applicability]

[0065] The present invention relates to a resin drainage manifold pipe to be placed in a through-hole in the floor slab of a building, comprising an upper pipe protruding above the floor slab and a lower pipe bonded below the upper pipe, wherein the upper pipe comprises an upper pipe connection portion for connecting an upper pipe that allows drainage from an upper floor to flow in, and a resin upper pipe receiving member bonded to the upper pipe connection portion, and at least one lateral branch pipe connection portion for connecting lateral branch pipes above the floor slab, and a resin lateral branch pipe receiving member bonded to the lateral branch pipe connection portion, and is particularly preferred for a drainage manifold pipe that is packaged to satisfy specific conditions for impact resistance. Furthermore, the packaged drainage manifold pipe and the method for packaging the drainage manifold pipe according to the present invention are particularly preferred in that they can provide a drainage manifold pipe with sufficient impact resistance. Furthermore, the method for testing the impact resistance of a packaged drainage manifold pipe is particularly preferred in that it can quickly, easily, and reliably confirm (inspect) that the resin drainage manifold pipe, including the resin receiving member, is not damaged during transportation from the manufacturing plant to the construction site. [Explanation of Symbols]

[0066] 100 Drainage collection pipe 110 Lower pipe 114 Swivel blades 116 Thermally expandable fireproofing materials 140 Upper pipe 142 Horizontal branch pipe connection 143 Upper pipe connection 144 Upper pipe receiving member 146 Horizontal branch pipe socket member 700 Outer layer member 1000 A-type cardboard boxes 1100 Semi-A style cardboard box 1200, 1210, 1300, 1310, 1400, 1410 Support members

Claims

1. A packaging form for a resin drainage manifold pipe placed in a through-hole in the floor slab of a building, The drainage manifold includes an upper pipe that protrudes above the floor slab and a lower pipe that is bonded below the upper pipe. The upper pipe includes an upper pipe connection part for connecting an upper pipe that allows drainage from the upper floor to flow in, and a resin upper pipe receiving member bonded to the upper pipe connection part, and at least one horizontal branch pipe connection part for connecting horizontal branch pipes above the floor slab, and a resin horizontal branch pipe receiving member bonded to the horizontal branch pipe connection part. The upper pipe receiving member is covered with packaging material at a position from the upper end of the lateral branch pipe connection portion in the axial direction of the drainage manifold to at least the upper end of the upper pipe receiving member, A packaging method for a drainage manifold, characterized in that the drainage manifold, whose upper pipe receiving member is covered with the packaging material, is housed in a cardboard box of type A, which is substantially rectangular in shape and satisfies the dimensional condition (the length in the axial direction of the drainage manifold, including the packaging material, whose upper pipe receiving member is covered with the packaging material < the inner dimension in the axial direction of the cardboard box of type A), with the upper pipe facing upwards.

2. The packaging configuration according to claim 1, characterized in that the outside of the drainage manifold is supported by a support member corresponding to the outer shape of the drainage manifold, and the support member is provided in the A-type cardboard box in a direction perpendicular to the axis of the drainage manifold, so that the drainage manifold is supported in the A-type cardboard box so that its axis is substantially horizontal or substantially vertical.

3. A method for packaging a resin drainage manifold pipe that is placed in a penetration hole in the floor slab of a building, The drainage manifold includes an upper pipe that protrudes above the floor slab and a lower pipe that is bonded below the upper pipe. The upper pipe includes an upper pipe connection part for connecting an upper pipe that allows drainage from the upper floor to flow in, and a resin upper pipe receiving member bonded to the upper pipe connection part, and at least one horizontal branch pipe connection part for connecting horizontal branch pipes above the floor slab, and a resin horizontal branch pipe receiving member bonded to the horizontal branch pipe connection part. From the upper end of the lateral branch pipe connection portion in the axial direction of the drainage manifold to at least the upper pipe receiver The upper pipe receiving member is covered with packaging material up to the upper end of the opening member. A method for packaging a drainage manifold, characterized in that the drainage manifold, whose upper pipe receiving member is covered with the packaging material, is stored in a cardboard box of type A, which is substantially rectangular in shape and satisfies the dimensional condition (length in the axial direction of the drainage manifold, including the packaging material, whose upper pipe receiving member is covered with the packaging material < the inner dimension in the axial direction of the cardboard box of type A), with the upper pipe facing upwards.

4. The packing method according to claim 3, characterized in that the outside of the drainage manifold is supported by a support member corresponding to the outer shape of the drainage manifold, and the support member is provided in the A-type cardboard box in a direction perpendicular to the axis of the drainage manifold, so that the drainage manifold is supported in the A-type cardboard box so that its axis is substantially horizontal or substantially vertical.

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