JP7223189B2 - fittings, drainage systems and buildings - Google Patents

Description

The present invention relates to joints, drainage systems and buildings.

In recent years, in multi-story buildings such as collective housing, wastewater discharged from sanitary equipment on each floor is collected in a vertical drainage pipe provided in a pipe shaft through a horizontal branch pipe from the sanitary equipment on each floor. It is designed to drain to the sewage system through a curved pipe or a horizontal pipe. In this way, in a drainage system (hereinafter simply referred to as a drainage system) for discharging wastewater discharged from sanitary equipment on each floor to the sewage system, it is necessary to connect the vertical pipe and the horizontal branch pipe that constitute the vertical drainage pipe. In addition, a collective joint (joint) is used that has a main pipe to which vertical pipes can be connected at the upper and lower ends, respectively, and a branch pipe connected to the side of the main pipe and to which a lateral branch pipe can be connected. there is

Inside the collecting joint described above, a rectifying vane is provided for favorably rectifying the inflowing waste water by swirling or the like and causing it to flow down (see, for example, Patent Document 1).

In recent years, the use of resin pipe materials, that is, the use of resin for drainage systems, has been promoted from the viewpoint of the decrease in the number of workers who construct drainage systems, the deterioration of technology, and the durability of various pipe materials that make up the drainage system. ing. By making all of the standing pipes, lateral branch pipes, collecting joints and leg joints made of resin, it is possible to construct a lightweight and highly durable drainage system.

Since the resin joint is manufactured by injection molding, it has at least two members: an upper member that protrudes upward from the floor slab that divides the floor slabs of the building, and a lower member that is embedded in the floor slab. , the upper member and the lower member are connected to each other. Further, the straightening vane is composed of a vane member and an annular member supporting the vane member, and is housed inside the lower member or inside the intermediate member interposed between the upper member and the lower member.

Japanese Patent No. 5483937

Resin joints such as those described above are often made of a non-refractory resin and provided with a thermal expansion material in order to impart fire resistance. Specifically, the thermal expansion material is provided on the outer peripheral surface of the joint, and when heat is applied from the outside, the joint itself quickly melts and disappears. block the through-holes in the floor slab made for As a result, it is possible to prevent smoke and flame generated on the lower floor (ie, lower floor) from reaching the upper floor (ie, upper floor).

For example, in the joints described in Patent Document 1, the thickness of the peripheral wall is increased at the connection portion between the upper member and the lower member of the resin joint, and at the portion where the annular member supporting the swirl vanes and the collective joint overlap. increase. Since the part where the thickness of the peripheral wall increases in this way is usually arranged on the upper side of the floor slab, it is difficult for heat to be transmitted in the event of a fire, and it is difficult for the part to melt. In this case, there is a problem that the portion where the thickness of the peripheral wall increases is difficult to block with the thermal expansion refractory material, and smoke and flame generated on the lower floor cannot be shut off.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a joint that can effectively block smoke and flames generated below.

A joint according to the present invention is a joint that can be inserted into a floor slab, and includes a plurality of branch pipes, and an upper member that protrudes upward from the floor slab when the joint is inserted through the floor slab. a lower member connected to the upper member and having an upper portion embedded in the floor slab and a lower portion protruding below the floor slab in a state in which the joint is inserted through the floor slab; and a thermal expansion member provided on the peripheral wall of the lower member, and when the joint is inserted through the floor slab, the upper end of the thermal expansion member It is characterized in that it is arranged at a position lower than the upper end surface of the floor slab, and the lower end of the thermal expansion member is arranged at a position lower than the upper end of the rectifying vane.

According to the above-described structure, since the rectifying blades are arranged at a height where heat is likely to be applied and within the pipe of the joint, they are quickly melted away when heat is applied, and are formed to allow the joint to pass through the floor slab. The through hole is smoothly closed by the thermal expansion material. This provides good blocking of smoke and flames generated below (ie, in the lower layer).

In the joint described above, the width of the thermal expansion material in the height direction is 30 mm or more and 60 mm or less, and the lower end of the thermal expansion material is located between a height of 30 mm and a height of 100 mm below the upper end surface of the floor slab. is preferably arranged.

According to the above-described configuration, the relative positions of the thermal expansion member and the rectifying vane are appropriate under the general condition that the thickness of the floor slab is 100 m or more, so that the fire resistance performance of the joint can be reliably exhibited.
Moreover, this invention has the following aspects.
<1>
A resin joint configured to be able to be inserted into a floor slab,
an upper member made of resin that includes a plurality of branch pipes and protrudes upward from the floor slab when the joint is inserted through the floor slab;
The upper member is externally fitted and connected to the lower end of the upper member, and in a state in which the joint is inserted through the floor slab, the upper portion is located inside the floor slab and the upper end of the upper portion protrudes from the upper end surface of the floor slab. and a lower member made of resin, the lower part of which protrudes downward from the floor slab;
a blade member positioned within the upper portion of the lower member and inclined with respect to the axis of the lower member;
a thermal expansion member provided on the peripheral wall of the lower member;
with
In a state in which the joint is inserted through the floor slab,
The thermal expansion material is arranged at a position embedded inside the floor slab,
A joint in which the lower end of the thermal expansion member is arranged at a position lower than the upper end of the blade member.
<2>
In a state in which the joint is inserted through the floor slab,
The joint according to <1>, wherein the upper end of the thermal expansion member is arranged at a position lower than the upper end surface of the floor slab.
<3>
In a state in which the joint is inserted through the floor slab,
The joint according to <1> or <2>, wherein the upper end of the thermal expansion member is arranged at a position lower than the lower end of the upper member.
<4>
A multi-story building drainage system comprising:
A horizontal branch pipe for flowing down the wastewater discharged from sanitary equipment on each floor,
a standing pipe that constitutes a drainage vertical pipe in the pipe shaft of the building and allows the drainage that has flowed down the horizontal branch pipe to flow down;
and a joint according to any one of <1> to <3> for connecting the lateral branch pipe and the vertical pipe.
<5>
A building provided with the drainage system according to <4>.

According to the joint according to the present invention, smoke and flame generated below the inserted floor slab can be effectively cut off.

It is a side view of a drainage system provided with a joint of one embodiment to which the present invention is applied. 1 is a side sectional view of a collective joint (joint) of one embodiment to which the present invention is applied; FIG. FIG. 4 is another sectional side view of the assembly joint of one embodiment to which the present invention is applied; FIG. 4 is yet another side cross-sectional view of the assembly joint of one embodiment to which the present invention is applied; FIG. 4 is a side cross-sectional view of another embodiment of a collective joint to which the present invention is applied; FIG. 11 is another side cross-sectional view of a collection joint of another embodiment to which the present invention is applied; FIG. 10 is still another side cross-sectional view of a collection joint of another embodiment to which the present invention is applied; FIG. 11 is a side cross-sectional view of a collective joint of still another embodiment to which the present invention is applied; FIG. 11 is another sectional side view of a collection joint of still another embodiment to which the present invention is applied; FIG. 4 is a side cross-sectional view of a collective joint of another embodiment to which the present invention is applied;

An embodiment of a joint to which the present invention is applied will be described below with reference to the drawings. Note that the drawings used in the following description are schematic, and the ratios of length, width, thickness, and the like are not necessarily the same as the actual ones, and can be changed as appropriate.

As shown in FIGS. 1 and 2, a collective joint (joint) 1 of one embodiment to which the present invention is applied is a joint configured to be able to be inserted into a floor slab S, and has an upper member 12 and a lower member 14. , rectifying blades 16 , and thermal expansion members 30 . In addition, in FIG. 1, illustration of the rectifying vane 16 and the thermal expansion member 30 is omitted.

The upper member 12 is a pipe member that protrudes upward from the floor slab S when the assembly joint 1 is inserted through the floor slab S. As shown in FIG. The upper member 12 includes a main pipe 2 extending in the vertical direction and a plurality of (three in this embodiment) branch pipes 3 connected to the outer peripheral surface of the main pipe 2 . The axes of the three branch pipes 3A, 3B, 3C are arranged on the same plane along the left-right direction (that is, the lateral direction) and are perpendicular to the axis of the main pipe 2. As shown in FIG. In the following description, the branch pipes 3A, 3B, and 3C are referred to as the branch pipe 3 when there is no particular need to distinguish them, and this description is also used for related components.

The lower member 14 is a tubular member connected to the upper member 12 , specifically fitted to the lower portion of the upper member 12 . When the assembly joint 1 is inserted into the floor slab S, the upper portion 14a of the lower member 14 is embedded in the floor slab S, and the lower portion 14b of the lower member 14 protrudes below the floor slab S.

As shown in FIG. 1, a collective joint 1 is used in a drainage system of a multi-story building (not shown) such as an apartment building. Specifically, the collective joint 1 constitutes a horizontal branch pipe 7 for flowing down the wastewater discharged from the sanitary equipment on each floor, and a vertical drainage pipe in the pipe shaft, and the horizontal branch pipe 7 flows down. It is configured to be connectable to a standpipe 9 that allows drainage to flow down to the bottom of the drainage system.

The lower part of a standpipe 9 (for example, a standpipe 9A) is fitted to the upper part of the upper member 12 of the assembly joint 1, and the upper part of another standpipe 9 (for example, a standpipe 9B) is fitted to the lower part of the lower member 14. mated. As shown in FIG. 2, a bushing 28 is fitted in the upper receptacle of the main pipe 2 . The bush 28 is formed so as to be externally fitted on the standpipe 9A (not shown) for the purpose of accommodating changes in the size and shape of the standpipe 9A. As shown in FIG. 1, each of the branch pipes 3 of the collective joint 1 is fitted with a downstream end of a lateral branch pipe 7 .

The assembly joint 1 is inserted through a through hole H formed in a concrete floor slab S interposed between floors adjacent in the vertical direction. A mortar M is filled between the side wall of the through hole H and the collective joint 1 . 2 and subsequent figures, the floor slab S and the mortar M are partly omitted.

The rectifying vane 16 is housed in the tube of the upper portion 14a of the lower member 14 and has a vane member 18 and an annular member 19 supporting the vane member 18 . The vane member 18 is a member formed in a spiral while descending from one radial inner end of the annular member 19 through the center toward the other inner end. Upper ends 18a and lower ends 18b of the blade members 18 are connected to the annular member 19 via connecting portions 21, respectively.

The thermal expansion material 30 is provided on the outer peripheral surface (surrounding wall) of the lower member 14 . The thermal expansion material 30 is not particularly limited as long as it is a material that can be expanded by heat, and for example, a known thermal expansion sheet can be used. In the state where the assembly joint 1 is inserted into the floor slab S, the upper end 30a of the thermal expansion member 30 is arranged at a position lower than the upper end surface Sa of the floor slab S as shown in FIG. Note that "the upper end 30a of the thermal expansion material 30 is located lower than the upper end surface Sa of the floor slab S" means that the thermal expansion material 30 is inside the floor slab S, and the upper end 30a of the thermal expansion material 30 is located inside the floor slab S. and the upper end surface Sa of the floor slab S may be at the same height. On the other hand, the lower end 30b of the thermal expansion member 30 is arranged at a position lower than the upper end 18a of the blade member 18. As shown in FIG. That is, the lower end 30b of the thermal expansion member 30 is arranged at a position lower than the upper end 18a of the blade member 18. As shown in FIG.

After satisfying the above conditions, as shown in FIG. 3, the width of the thermal expansion material 30 in the height direction is preferably 30 mm or more and 60 mm or less. Moreover, the lower end 30b of the thermal expansion member 30 is preferably arranged between a height of 30 mm and a height of 100 mm below the upper end surface Sa of the floor slab S. As shown in FIG.

By satisfying the above conditions, for example, the height between the upper end surface Sa of the floor slab S and the lower end 30b of the thermal expansion member 30 is ensured to be approximately 100 mm. As a result, as shown in FIG. 4, the collective joint 1 can be placed in the position shown in FIG. ), the thermal expansion member 30 is arranged between the upper end surface Sa and the lower end surface Sb of the floor slab S in the height direction.

(Another aspect (1))
As another embodiment of the above embodiment, the collective joint 1 may be provided with a sound insulation cover 40 as shown in FIGS. The sound insulation cover 40 is open at the socket of the collective joint 1 . The thermal expansion material 30 may be provided outside the lower member 14 of the assembly joint 1 and inside the sound insulation cover 40 as shown in FIG. may have been

Moreover, when the thermal expansion material 30 is provided inside the sound insulation cover 40, as shown in FIG. is preferred. Examples of the material of the constraining layer 48 include aluminum, glass fiber nonwoven fabric, glass fiber woven fabric, and the like. By providing the constraining layer 48 and arranging the adhesive surface (or non-constraining surface) 30c of the thermal expansion rod 30 on the sound insulation cover 40 side in this way, the degree of blockage of the through hole H during fire can be increased. .

(Another aspect (2))
When the thermal expansion material 30 is provided outside the sound insulating cover 40 as illustrated in FIG. 6, as a further embodiment of the above-described embodiment, as shown in FIG. That is, a net-like non-combustible member 44 such as a wire mesh may be provided at the position where the mortar M is backfilled. Further, as shown in FIG. 9, a non-combustible member 44 is provided outside the sound insulation cover 40, and a thermal expansion material 30 is provided outside the non-combustible member 44 so that the non-combustible member 44 protrudes in the height direction. may With these structures, the non-combustible member 44 and the mortar M are entangled, and the thermal expansion material 30 is prevented from falling. As described above, the thermal expansion material 30 is wound in contact with the outside of the sound insulating cover 40 (that is, the mortar M side), so that the degree of blockage of the through hole H can be increased in the event of a fire.

(Other aspect (3))
The assembly joint 1 may comprise a middle member 13 between the upper member 12 and the lower member 14 . For example, the upper end portion of the middle member 13 is fitted inside the lower portion of the upper member 12 and the lower end portion of the middle member 13 is fitted inside the upper portion of the lower member 14 . Also, the intermediate member 13 is embedded in the floor slab and the mortar M. In such a configuration, thermal expansion material 30 is provided on the outside of the lower portion of upper member 12 .

Further, the vane member 18 of the rectifying vane 16 does not have to be spirally formed as described above, and is not particularly limited as long as the flow of the fluid flowing into the collection joint 1 can be regulated. Alternatively, it may be formed so as to rise from the outer peripheral side inside the lower member 14 toward the center. Alternatively, the rectifying vane 16 may be directly connected to the inner peripheral surface of the lower member 14 without providing the annular member 19 .

As described above, according to the assembly joint 1 of the above-described embodiment, the straightening blades 16 are arranged at a height where heat is likely to be applied and inside the lower member 14 of the assembly joint 1, so when heat is applied, It quickly melts away and the through hole H is smoothly closed by the thermal expansion material 30 . As a result, smoke and flames generated in the layer below the floor slab S can be blocked well.

Further, according to the assembly joint 1 of the above-described embodiment, the width of the thermal expansion material 30 in the height direction is 30 mm or more and 60 mm or less, and the lower end 30b of the thermal expansion material 30 is 30 mm below the upper end surface Sa of the floor slab S. and 100 mm below, the position of the thermal expansion material 30 can be optimized. For example, under the general condition that the thickness of the floor slab S is 100 m or more, the relative positions of the thermal expansion member 30 and the rectifying vane 16 are appropriate, so the fireproof performance of the assembly joint 1 can be reliably exhibited.

Although the preferred embodiments of the present invention have been described in detail above, the present invention is not limited to such specific embodiments, and various modifications can be made within the scope of the gist of the present invention described in the scope of the claims. Transformation and change are possible.

1 ... collective joint (joint)
3 Branch pipe 12 Upper member 14 Lower member 16 Straightening vane 30 Thermal expansion member 30a Upper end 30b Lower end S Floor slab Sa Upper end face

Claims (5)

A resin joint configured to be able to be inserted into a floor slab,
a resin upper member having a branch pipe and protruding upward from the floor slab when the joint is inserted through the floor slab;
The upper member is externally fitted and connected to the lower end of the upper member, and in a state in which the joint is inserted through the floor slab, the upper portion is located inside the floor slab and the upper end of the upper portion protrudes from the upper end surface of the floor slab. and a lower member made of resin, the lower part of which protrudes downward from the floor slab;
a blade member positioned within the upper portion of the lower member and inclined with respect to the axis of the lower member;
a thermal expansion member provided on the peripheral wall of the lower member;
with
In a state in which the joint is inserted through the floor slab,
The thermal expansion material is arranged at a position embedded inside the floor slab,
A joint in which the lower end of the thermal expansion member is arranged at a position lower than the upper end of the blade member. In a state in which the joint is inserted through the floor slab,
2. The joint according to claim 1, wherein the upper end of said thermal expansion member is arranged at a position lower than the upper end surface of said floor slab. In a state in which the joint is inserted through the floor slab,
3. The joint according to claim 1, wherein the upper end of said thermal expansion member is arranged at a position lower than the lower end of said upper member. A multi-story building drainage system comprising:
A horizontal branch pipe for flowing down the wastewater discharged from sanitary equipment on each floor,
a standing pipe that constitutes a drainage vertical pipe in the pipe shaft of the building and allows the drainage that has flowed down the horizontal branch pipe to flow down;
and a joint according to any one of claims 1 to 3 for connecting the lateral branch pipe and the vertical pipe. A building comprising a drainage system according to claim 4.

Images