JP2001182120A - Trap for waterproof pan of floor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify constitution by decreasing the number of parts, and to improve operating efficiency. SOLUTION: A trap 30 for a waterproof pan of floor is constituted, having a bottomed cylindrical trap body 33 and a cylindrical body 35, which is housed in the trap body 33 and to which drain is made to flow from a drain inflow port 34. A strainer section 36 for preventing the inflow of solid bodies is formed integrally with the cylindrical body 35 and is configured in the drain inflow port 34. The trap body 33 is connected to the waterproof pan 38 by a clamping frame 50, and the cylindrical body 35 is installed detachably to the clamping frame 50. The strainer section 36 is formed, by conically inclining a top face at a fixed angle so as to be lowered toward the center. A large number of arcuate drain inflow holes 36A are formed in the circumferential direction and the radial direction in the strainer section 36, and a circular hole 36B having a diameter in size to the extent that a finger can be inserted is formed at the center.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trap for waterproof pans on floors.

[0002]

2. Description of the Related Art In general, a floor waterproof pan trap 2 is
As shown in FIG. 12 and FIG. 13, a bottomed tubular trap body 3 and a drain inlet 4 at the upper end accommodated in the trap body 3.
And a strainer (opening) 6 provided on the drainage inlet 4 of the tubular body 5 for preventing the inflow of solid matter. The trap body 3 has an upper opening connected to a waterproof pan 8 on the floor via a packing (seal member) 7 and an outlet 9 connected to a drain pipe (not shown). When the tubular body 5 is accommodated in the trap body 3, a water sealing portion 10 is formed between the tubular body 5 and the trap body 3. The trap body 3 and the cylindrical body 5 are formed in a cylindrical shape with different diameters. The discharge port 9 is formed in a small diameter as a surface formed along the cylindrical surface on the upper part of the trap body 3 in order to secure the water sealing performance of the water sealing section 10. The outlet 9 and a drain pipe (not shown) are connected by a cylindrical connecting portion 21.

The cylindrical body 5 is formed such that its upper part is curved outward, and at the same time, from the curved part 11, a retaining projection 12 is formed.
Is provided. The trap body 3 and the tubular body 5 are connected via an annular frame 13. When the cylindrical frame portion 14 is screwed into the thread portion 15 formed on the inner surface of the upper portion of the trap body 3, the outer peripheral flange portion 16 forms the opening edge 17 of the waterproof pan 8.
It is pressed against the packing 18 arranged above and connects the waterproof pan 8 and the trap body 3.

The annular frame 13 has a recess 19 through which the retaining projection 12 of the tubular body 5 can pass vertically. For this reason, when the tubular body 5 is lowered from above onto the annular frame 13 screwed to the trap body 3, the retaining projection 12 is passed downward from the recess 19, and the tubular body 5 is turned. The body 5 is housed in the trap body 3 with the ring frame 13 being prevented from falling off. At the time of assembling, an odor-proof packing 20 is attached between the tubular body 5 and the annular frame 13. The flat plate-shaped strainer 6 is placed on an annular protrusion 21 formed inside the annular frame 13 so that the assembling of the waterproof pan trap 2 is completed.

[0005]

In the conventional trap for a waterproof pan according to the above construction, the number of assembly points is large and the work for assembling and removing for maintenance is not only complicated and time-consuming, but also increases the number of parts. There is a problem that the cost is increased. Further, since the outlet 9 is made deeper in the water-sealing portion 10 to secure the water-sealing performance, the outlet 9 has a small diameter at the upper part of the trap body 3 and is formed along the cylindrical surface. It is formed on a substantially upright surface. For this reason, there is a problem that it is difficult to insert a cleaning tool or a finger of a hand, and it is difficult to work.

Further, since the discharge port 9 and the drain pipe (not shown) are connected by the cylindrical connecting portion 21, the flowing water discharged from the discharge port 9 to the connecting portion 21 is supplied to the trap body 3.
After passing through the cylindrical portion 3A below the discharge port 9, the water flows down toward the bottom surface of the connecting portion 21, and then is discharged to a drain pipe side (not shown) while colliding with flowing water flowing into the connecting portion 21.
For this reason, the drainage capacity must be reduced. If a large amount of drainage flows, the drainage overflows from the strainer 6 or if the wastewater containing a detergent having a high foaming performance flows in, the secondary foaming phenomenon occurs in the trap. There is a problem that generated bubbles overflow. If the diameter of the trap body or the cylindrical body is increased in order to solve the problem of the drainage performance, there is a problem that the trap itself becomes heavy and large, resulting in an increase in cost.

SUMMARY OF THE INVENTION The present invention has been made to eliminate the above-mentioned disadvantages, and it is an object of the present invention to provide a waterproof pan trap for floors which has a reduced number of assembling points, simplifies the structure and facilitates assembling work and maintenance work. In addition, a trap for floor waterproof pans that can improve drainage performance with a simple configuration, suppress secondary foaming generated inside, and reduce the size and weight of the trap itself can be achieved. To provide.

[0008]

A trap for a floor waterproof pan according to the present invention comprises a bottomed cylindrical trap body having an upper opening connected to a floor waterproof pan and an outlet connected to a drain pipe. A cylindrical body that is housed in the main body and receives drainage from a drainage inlet at the upper end and forms a trap body and a water-sealing portion, and is provided on the drainage inlet side of the cylindrical body to prevent inflow of solid matter. In the waterproof pan trap for floors provided with a strainer, the tubular body and the strainer are integrally formed.

According to a second aspect of the present invention, there is provided a floor waterproof pan trap, wherein the three members are connected to each other by interposing a tightening frame between the waterproof pan, the trap body, and the tubular body. An annular protruding portion is formed on the inner peripheral surface so as to protrude inward, and a concave portion formed by cutting out the upper and lower portions of the annular protruding portion is provided. A flange formed so as to be able to be placed on the upper surface of the annular protrusion, and a perimeter that allows the upper surface to pass through the concave portion in the vertical direction, and to be able to be locked to the annular protrusion. An engaging projection formed so as to protrude at a position lower by the length, and the engaging projection of the tubular body is passed through the concave portion of the tightening frame, and is positioned below the concave portion to form a cylinder. Turn the body, lock the engagement protrusion to the annular protrusion, and tighten the fastening frame and the cylindrical body. It is intended to continue the.

Further, the floor waterproof pan trap according to a third aspect of the present invention has a cylindrical shape in which the water sealing performance is secured in accordance with each diameter of the cylindrical body and the trap body when the cylindrical body is assembled. The vertical dimension of the part constituting the water sealing part of the body is determined.

According to a fourth aspect of the present invention, there is provided a waterproof pan trap for a floor, wherein the annular projecting portion of the fastening frame and the flange of the cylindrical body each have a seating area capable of forming a seal portion for blocking gas from the drain pipe side. The width in the radial direction between the upper surface of the annular projection and the lower surface of the flange is determined so as to have.

According to a fifth aspect of the present invention, there is provided a waterproof pan trap for a floor, wherein the strainer is formed of a dish-shaped portion having a large number of drainage inflow holes formed in a circumferential direction and a radial direction, and the strainer is lowered toward the center. The upper surface is formed in such a manner that the upper surface is conically inclined at a predetermined angle.

According to a sixth aspect of the present invention, there is provided a waterproof pan trap for a floor, wherein a circular hole having a predetermined diameter is formed at the center of the dish-shaped portion.

According to a seventh aspect of the present invention, there is provided the floor waterproof pan trap, wherein the connecting portion connecting the discharge port of the trap body and the drain pipe connecting portion applies a pulling force to the drain pipe toward the drain. The lower portion is formed to be curved.

The trap for a floor waterproofing pan according to claim 8, wherein the trap body has a large-diameter upper portion, an overflow surface continuous with the upper portion and inclined at the upper end, and the diameter gradually decreases downward. A conical cylindrical portion that becomes smaller, and the area of an upper gap formed between the conical cylindrical portion and the cylindrical body in the overflow surface along the upper end of the inclined conical cylindrical portion, Of the surface formed in the conical cylindrical portion in contact with the lower end, the area is larger than the area of the lower gap formed between the conical cylindrical portion and the cylindrical body, and from the lower gap toward the upper gap. The diameter of the cylindrical body is set so that the area gradually increases.

According to a ninth aspect of the present invention, there is provided a trap for a floor waterproof pan, wherein an upper opening is connected to the floor waterproof pan and a discharge port is connected to a drain pipe. A cylindrical body that forms a trap body and a water-sealed portion while drainage is flowing from a drainage inlet of the above, and a strainer that is provided on the drainage inlet side of the cylindrical body and prevents inflow of solids. In the waterproof pan trap for floors, a connecting portion connecting the outlet of the trap body and the drain pipe connecting portion is formed with a lower portion curved so as to impart a pulling force to the drain to the drain pipe side. It is like that.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments shown in the drawings. FIG. 1 is a longitudinal sectional view showing a floor waterproof pan trap according to an embodiment of the present invention. As shown in FIG. 1, the floor waterproof pan trap 30 according to the present embodiment includes a bottomed tubular trap body 33 and a trap body 33.
And a cylindrical body 35 into which drainage flows from a drainage inlet 34 at the upper end, and a drainer inlet 34 of the cylindrical body 35 has a strainer portion (strain portion) for preventing inflow of solid matter. 36 is formed integrally with the cylindrical body 35. The cylindrical body 35 formed integrally with the trap body 33 and the strainer portion 36 is formed of a metal or a synthetic resin, respectively, or partially using a metal or a synthetic resin.

As shown in FIG. 2, the cylindrical body 35 has a flange 46 formed on the outer periphery of the upper end and a flange 4 on the outer periphery.
An engagement claw (engagement protrusion) 47 is formed to protrude downward by a predetermined height from 6. At the time of assembling, the flange 46 is placed on an annular projection 54 of a tightening frame 50 to be described later, and the engaging claw 47 passes through the concave portion 55 of the tightening frame 50 from above. Are locked to the annular projecting portion 54 by the relative rotation of. At the time of assembling, the tubular body 35 is previously sealed with a water sealing portion 48 (see the hatched portion in FIG. 1) of the tubular body 35 so as to ensure the water sealing performance according to the respective diameters of the tubular body 35 and the trap body 33. ), The vertical dimension of the portion H1 (5 in this embodiment).
0 mm) is determined.

As shown in FIGS. 1 and 6, the strainer section 36 is formed in a dish shape having a large number of drainage inflow holes 36A formed in the circumferential and radial directions. As shown in FIG. 1, the strainer portion 36 is formed such that the upper surface is conically inclined at a predetermined angle (about 2 degrees in the present embodiment) so as to become lower toward the center. Of the drainage inflow holes 36A,
At the center of the strainer portion 36, a circular hole 36B having a diameter large enough to allow a finger to be inserted is formed. As shown in FIG. 6, the drainage inlet 36A is formed in an arc shape, and a corner is formed in a curved surface. Also, among the drainage inflow holes 36A,
The drain inflow hole 36C near the center is formed in an elliptical shape.
The strainer portion 36 is formed to be inclined toward the center portion, and the drainage inlet 36A is formed in an arc shape. Therefore, when drainage flows into the strainer portion 36, the drainage swirl swirls left in Japan. It flows into the cylindrical body 35.

As shown in FIGS. 1 and 2, the trap body 33 has an open upper end and is connected to a waterproof pan 38, and a discharge port 39 is connected to a drain pipe 41 through a connection portion 40.
Connected to. As shown in FIG. 1, the trap body 33 has a large-diameter portion 42 formed at an upper portion, and a conical tubular portion 43 that is continuous with the large-diameter portion 42 and that gradually decreases in diameter downward. I have. A female thread portion 37 is formed on the upper inner peripheral surface of the large diameter portion 42 of the trap body 33 so that a tightening frame 50 to be described later is screwed thereto.

As shown in FIG. 1, the discharge port 39 of the trap body 33 has a large-diameter portion
Since the lower portion is opened to the conical cylindrical portion 43, the opening surface is formed such that the upper portion is inclined outward and the lower portion is inclined inward.
For this reason, the cleaning tool and the finger of the hand are easily inserted.
Further, a connecting portion 40 connecting between the outlet 39 of the trap body 33 and a drain connecting portion 49 to which the drain 41 is connected.
As shown in FIG. 1, the lower part is formed by bending the lower part so as to apply a pulling force to the drainage pipe 41 side to the drainage.

The upper end portion 44 of the conical cylindrical portion 43 is formed so that a part thereof gradually extends upward through the lower end 39A of the outlet 39, and is inclined so as to be highest on the side opposite to the lower end 39A of the outlet 39. You. The surface formed by the inclined upper end portion 44 forms an overflow surface 44A. Of the overflow surface 44A along the inclined conical cylinder upper end 44, the conical cylinder 43
The area of the upper gap S <b> 1 formed between the cylindrical body 35 and the lower end 45 of the cylindrical body 35 is set to be equal to that of the conical cylindrical part 43 of the surface 45 </ b> A formed in the conical cylindrical part 43. Cylindrical body 3
5 is formed to be larger than the area of the lower gap S2 formed between them. The diameter of the cylindrical body 35 is set such that the area gradually increases from the lower gap S2 to the upper gap S1.

As shown in FIGS. 1 and 2, the waterproof pan 38, the trap body 33 and the cylindrical body 35 are connected via an annular fastening frame 50. As shown in FIG. 2 and FIG.
A male thread 53 is formed on the outer peripheral surface of the lower part of the tubular frame body 51 formed on the upper part of the cylinder frame main body 51.

An annular projecting portion 54 is formed on the cylindrical frame body 51 so as to project from the flange portion 52 to the inner peripheral surface on the lower side by the thickness of the flange portion 46 inward. That is, when the flange 46 is placed on the annular protrusion 54, the annular protrusion 54 is formed so that the flange portion 52 and the upper surface 46 </ b> B of the flange 46 (the same surface as the upper surface of the strainer portion 36) are substantially flat. It is formed below the upper surface of the portion 52.

When assembling the trap 30, the annular projection 5
The lower surface 46A of the flange portion 46 is mounted on the upper surface 54A of the fourth member 4 to form a mechanical seal, and blocks odor from the drain pipe 41 side. That is, the radial width of the upper surface 54A of the annular projecting portion 54 and the lower surface 46A of the flange portion 46 are determined so as to have a seating area sufficient to block gas from the drain pipe 41 side. By using a mechanical seal, there is no need to provide a separate seal member, and the number of parts is reduced.

The annular protruding portion 54 is provided with a concave portion 55 which is formed by being cut out so as to penetrate vertically. The concave portions 55 are formed at four locations at equal intervals in the circumferential direction.
The fifth engaging claw 47 passes vertically. The annular projecting portion 54 is provided with a very slightly downwardly projecting portion on the lower surface in the vicinity of the concave portion 55 so as to come into contact with the upper surface of the engaging claw 47. The annular protruding portion 54 is formed in the cylindrical body 3
When the engaging claw 47 of FIG. 5 is displaced in the circumferential direction after passing through the concave portion 55 from above, the engaging claw 47 is locked and the cylindrical body 35 is locked with respect to the fastening frame 50. It has become.

Next, the operation of the floor waterproof pan trap 30 according to the above embodiment will be described. First, when assembling the trap 30, as shown in FIGS. 2 and 4, rubber packings (seal members) 57 and 58 are arranged above and below the opening edge of the waterproof pan 38, and the trap body 33 is attached to the lower rubber. The waterproof pan 38 is disposed below the opening edge of the waterproof pan 38 so that the upper end surface 33A matches the packing 58. Then, the annular thin plate 59 for preventing torsion is placed on the upper rubber packing 57, the fastening frame 50 is lowered from above to the trap body 33, and the fastening frame 50 is rotated in the fastening direction. The trap body 33 is connected to the waterproof pan 38 via the lower rubber packing 58.
And the flange 5 of the fastening frame 50
2 is pressed against the waterproof pan 38 via the upper rubber packing 57 and the annular thin plate 59. Thus, the waterproof pan 38, the trap body 33, and the fastening frame 50 are connected.

Next, the cylindrical body 35 is clamped from above with the tightening frame 5.
0, and the engaging claw 47 of the cylindrical body 35 is
No. 0 is passed through the concave portion 55, and is positioned below the concave portion 55. Then, when the tubular body 35 is turned, the engaging claw 47 is brought into contact with the lower surface of the annular projecting portion 54 and locked, and the tubular body 35 is rotated.
Are detachably connected to the fastening frame 50. As described above, in the trap 30 according to the present embodiment, the trap body 33 is
Is connected to the waterproof pan 38 via the rubber packings 57 and 58 and the annular thin plate 59, and then the tubular body 35 is fastened to the fastening frame 50.
When the engagement pawl 47 is positioned below the concave portion 55 and turned, the assembling is completed. For this reason, the assembling and removing operations are facilitated. Further, since the strainer portion 36 is formed integrally with the tubular body 35, the number of components can be reduced, and the number of work procedures can be reduced. In addition, by integrating them, the weight on the cylindrical body 35 side increases, and rattling can be suppressed.

Further, the strainer portion 36 is formed to be inclined toward the center and the drainage inlet 36A is formed in an arc shape. And flows into the cylindrical body 35 while swirling. Further, at the time of a large amount of drainage from the drainage device, the strainer 36
Drainage accumulated on top is drainage inlet 36A, 36B, 36C
And flows down into the cylindrical body 35. When the amount of drainage decreases, a left swirling flow is strongly formed on the outer peripheral side of the strainer portion 36, and the center circular hole 36B becomes an air suction portion, and an air suction core (air suction passage).
Is formed to prevent the trap from being opened. In addition, since the drainage function is stable, it is possible to suppress the occurrence of abnormal noise due to breakage, and it is possible to quietly and stably drain. As described above, in the trap for floor waterproof pan according to the present embodiment, it is possible to keep the trap body compact with a simple configuration without increasing the diameter of the trap body, and to prevent the trap from being opened. it can.

In the cylindrical body 35, the vertical dimension of a portion H1 constituting the water sealing portion 48 (see the hatched portion in FIG. 1) of the cylindrical body 35 is determined in advance, and the cylindrical body 35 and the trap body 33 are determined.
The water sealing performance is ensured in accordance with the respective diameters of the cylindrical body 35 and the trap body 33 after assembly.
With this set, the best water sealing performance corresponding to each diameter can be obtained.

Further, at the time of assembling the trap 30, the lower surface 46A of the flange 46 is placed on the upper surface 54A of the annular projecting portion 54 to form a mechanical seal, so that there is no need to provide a separate seal member. Thus, the number of parts is reduced.

Since the discharge port 39 of the trap body 33 has an opening surface with an upper part inclined outward and a lower part inclined inward, a cleaning tool or a finger of a hand can be easily inserted, and the cleaning operation can be performed more efficiently. be able to.

The connecting portion 40 connecting the outlet 39 of the trap body 33 and the drain connecting portion 49 to which the drain 41 is connected is formed with a curved lower portion. The drain water flowing out of the
In addition to being guided to the side, a siphon force is applied to apply a pulling force to the drainage to the drain pipe 41 side. For this reason, drainage performance can be improved even with a compact configuration.

Further, in the trap 30, the area of the upper gap S1 formed between the conical cylindrical portion 43 and the cylindrical body 35 in the overflow surface 44A along the inclined conical cylindrical portion upper end 44 is defined as the cylindrical shape. The conical tubular portion 4 is in contact with the lower end 45 of the body 35
3 is formed to be larger than the area of the lower gap S2 formed between the conical cylindrical portion 43 and the cylindrical body 35 in the surface 45A formed in the inside 3, so that the drainage performance inside the trap body 33 is improved. Can be improved. In addition, since the diameter of the cylindrical body 35 is set so that the area gradually increases from the lower gap S2 to the upper gap S1, the drainage flowing into the cylindrical body 35 can be smoothly discharged. It is led to.

FIG. 7 and FIG. 8 show a modification of the trap 30 according to the above embodiment, in which a circular hole 136B formed at the center of a strainer part 136 formed integrally with a cylindrical body 135 is shown. The diameter of the circular hole 136B is increased.
And a tubular adapter 160 to which a hose extending from a drainage device such as a washing machine is connected.

FIGS. 9 to 11 show another modification of the trap 30 according to the above embodiment, in which the connecting portion 249 of the trap main body 233 to a drain pipe (not shown) is connected by a cap nut. I have.

In the above-described embodiment and the modified example,
Although a circular hole is provided at the center of the strainer portion, the present invention is not limited to this. A hole for securing an air passage may be provided near the center. Holes may be used. Further, the discharge port of the trap body is formed such that the upper part is inclined outward and the lower part is inclined inward, and the connecting part connecting the discharge port of the trap body and the drain pipe connecting part is provided with a pulling force. In both the configuration in which the lower portion is curved and the configuration in which the area S1 of the upper gap in the trap is larger than the area S2 of the lower gap, the cylindrical body 33 integrated with the strainer portion 36 is used.
It is needless to say that the present invention can be applied not only to a trap provided with a trap, but also to a trap of a type in which the strainer 6 and the cylindrical body 5 are different from the conventional one.

[0038]

As described above, according to the trap for a floor waterproof pan according to the present invention, the bottomed tubular trap body having an upper opening connected to the floor waterproof pan and an outlet connected to the drain pipe. A cylindrical body which is accommodated in the trap body, receives drainage from a drainage inlet at the upper end, and forms a water sealing portion with the trap body, and a solid substance provided on the drainage inlet side of the cylindrical body. In a waterproof pan trap for a floor provided with a strainer for preventing the above, since the cylindrical body and the strainer are integrally formed, the number of assembling points can be reduced, so that assembling work and maintenance management work are simplified. The efficiency can be improved, and the cost can be reduced.

In the trap for floor waterproof pan according to the second aspect, a fastening frame is interposed between the waterproof pan, the trap body, and the tubular body to connect these three members.
The fastening frame is provided with an annular projection formed on the inner peripheral surface so as to protrude inward, and a recess formed by cutting out the upper and lower sides of the annular projection to form a cylindrical body. A flange formed so as to be able to be placed on the upper surface of the annular protrusion of the fastening frame, and an outer peripheral surface capable of vertically passing through the recessed portion,
And an engagement protrusion formed to project from the lower end of the flange to a position lower by the length of the protrusion so as to be locked to the annular protrusion, and the engagement protrusion of the cylindrical body is provided. Was passed through the concave portion of the tightening frame, the cylindrical body was turned by being positioned below the concave portion, the engaging protrusion was locked to the annular protrusion, and the tightening frame and the cylindrical body were connected. Thereby, the assembling and removing of the fastening frame and the tubular body are facilitated, the attaching and detaching work can be made more efficient, and the cleaning work can be made more efficient.

Furthermore, in the trap for floor waterproof pan according to the third aspect, at the time of assembling the tubular body, the tubular body is pre-formed so as to secure the water sealing performance in accordance with the respective diameters of the tubular body and the trap body. By determining the vertical dimension of the portion constituting the water sealing portion of the body, the drainage performance can be improved, so that the device can be reduced in size and weight, and the cost can be reduced.

In the trap for floor waterproof pan according to the fourth aspect, the annular projection of the fastening frame and the flange of the tubular body each have a seating area capable of forming a seal for blocking gas from the drain pipe side. The number of components can be reduced by determining the radial width between the upper surface of the annular protrusion and the lower surface of the flange portion so that assembly and removal operations can be simplified, and the cost can be reduced. Can be achieved.

According to a fifth aspect of the present invention, the strainer includes a dish-shaped portion having a large number of drainage inflow holes formed in a circumferential direction and a radial direction, and the strainer is lowered toward the center. The upper surface is formed to be conical at a predetermined angle so that swirling flow vortices can be generated on the strainer during drainage to improve drainage performance. Can be achieved.

According to the trap for floor waterproof pan according to the sixth aspect, a circular hole having a predetermined diameter is formed at the center of the dish-shaped portion, so that the air passage is formed at the center of the cylindrical body at the time of drainage. Can be formed, so that breakage can be prevented and the drainage function can be maintained well.

[0044] In the trap for floor waterproof pan according to claim 7, the connecting portion connecting between the outlet of the trap body and the drain pipe connecting portion applies a pulling force to the drain to the drain pipe side. Since the lower portion is formed to be curved, drainage performance between the trap body and the drain pipe side during drainage can be improved, and the apparatus can be made compact.

In the trap for floor waterproof pan according to the eighth aspect, the trap body has an upper portion having a large diameter, an overflow surface continuous with the upper portion and inclined at the upper end, and the diameter gradually decreases downward. A conical cylindrical portion that becomes smaller, and the area of an upper gap formed between the conical cylindrical portion and the cylindrical body in the overflow surface along the upper end of the inclined conical cylindrical portion, Of the surface formed in the conical cylindrical portion in contact with the lower end, the area is larger than the area of the lower gap formed between the conical cylindrical portion and the cylindrical body, and from the lower gap toward the upper gap. By setting the diameter of the tubular body so that the area gradually increases, the drainage performance in the trap body during drainage can be improved, and the apparatus can be made compact.

According to a ninth aspect of the present invention, there is provided a trap for a floor waterproof pan, wherein an upper opening is connected to the floor waterproof pan and a discharge port is connected to a drain pipe. A cylindrical body that forms a trap body and a water-sealed portion while drainage is flowing from a drainage inlet of the above, and a strainer that is provided on the drainage inlet side of the cylindrical body and prevents inflow of solids. In the waterproof pan trap for floors, a connecting portion connecting the outlet of the trap body and the drain pipe connecting portion is formed with a lower portion curved so as to impart a pulling force to the drain to the drain pipe side. By doing so, at the time of drainage, the drainage flowing out of the outlet is pulled to the drain pipe side, so that drainage performance can be improved.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a waterproof pan trap for a floor according to an embodiment of the present invention.

FIG. 2 is an enlarged sectional view showing a main part of the waterproof pan trap of the floor of FIG.

FIGS. 3A and 3B are explanatory views respectively showing a fastening frame and a tubular body of the trap for the waterproof pan on the floor of FIG. 1;

FIG. 4 is an explanatory view showing a state at the time of assembling the waterproof pan trap of the floor of FIG. 1;

5 is a bottom view of the tubular body of the waterproof pan trap of the floor of FIG. 1;

6 is a plan view showing a state in which the floor waterproof pan trap of FIG. 1 is assembled.

FIG. 7 is a vertical sectional view showing a modification of the waterproof pan trap of the floor of FIG. 1;

8 is a plan view of the waterproof pan trap of the floor of FIG. 7;

9 is a plan view showing a half from the center of another modification of the waterproof pan trap of the floor of FIG. 1;

10 is a vertical sectional view showing the trap for a waterproof pan on the floor of FIG. 9;

FIG. 11 is a front view showing the waterproof pan trap on the floor in FIG. 9;

FIG. 12 is a vertical sectional view showing a conventional waterproof pan trap for floors.

FIG. 13 is an enlarged sectional view showing a main part of the waterproof pan trap of the floor of FIG. 12;

[Explanation of symbols]

 33 Trap body 34 Drainage inlet 35 Cylindrical body 36 Strainer part (strainer) 38 Floor waterproof pan 39 Outlet 41 Drain pipe 48 Water sealing part

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masami Oshima 1-5-14 Kawaguchi, Kawaguchi-shi, Saitama F-term in Hasegawa Casting Co., Ltd. (Reference) 2D061 DD08 DE05 DE13

Claims (9)

[Claims] 1. A bottomed tubular trap body having an upper opening connected to a waterproof pan on the floor and an outlet connected to a drain pipe, and drainage being accommodated in the trap body and flowing through a drainage inlet at an upper end. In a trap for a waterproof pan on a floor provided with a tubular body forming a trap body and a water sealing portion, and a strainer provided on the drainage inlet side of the tubular body to prevent inflow of solid matter, A trap for a waterproof pan on a floor, wherein a body and a strainer are integrally formed. 2. A fastening frame interposed between the waterproof pan, the trap body and the tubular body to connect these three members, and the fastening frame has an annular projection formed on the inner peripheral surface so as to project inward. And a recess formed by being cut out by penetrating the upper and lower portions of the annular protrusion. The cylindrical body is formed so as to be mountable on the upper surface of the annular protrusion of the fastening frame. A flange formed on the outer peripheral surface so as to be able to pass through the concave portion in the up-down direction and to be locked to the annular projecting portion so as to project from the lower end of the flange portion to a position below the projecting portion by the length of the projecting portion. The engaging projection of the tubular body is passed through the recessed portion of the tightening frame, the tubular body is turned under the recessed portion, and the engaging projected portion is formed in the annular shape. The floor protection according to claim 1, wherein the fastening frame is connected to the tubular body by being locked to the projecting portion. Trap for water pan. 3. A vertical dimension of a portion constituting a water-sealing portion of the cylindrical body in advance so as to secure a water-sealing performance in accordance with respective diameters of the cylindrical body and the trap body when the cylindrical body is assembled. 3. The trap for a floor waterproof pan according to claim 1, wherein: 4. An upper surface of the annular projection and a lower surface of the flange so that the annular projection of the fastening frame and the flange of the cylindrical body have a seating area capable of forming a seal portion for blocking gas from the drain pipe side. 3. The trap for floor waterproof pans according to claim 2, wherein the radial width of the floor is determined. 5. A strainer comprising a dish-like portion having a large number of drainage inflow holes formed in a circumferential direction and a radial direction,
The trap for a waterproof pan on a floor according to claim 1, wherein the upper surface is formed to be conically inclined at a predetermined angle so as to become lower toward the center of the dish-shaped portion. 6. The trap for a floor waterproof pan according to claim 5, wherein a circular hole having a predetermined diameter is formed at the center of the dish-shaped portion. 7. A connecting portion connecting between the outlet of the trap body and the drain pipe connecting portion is formed so that a lower portion is curved so as to apply a pulling force to the drain to the drain pipe side. The floor waterproof pan trap according to claim 1, wherein: 8. The trap body has a large-diameter upper portion, and a conical cylindrical portion that forms an overflow surface that is continuous with the upper portion and that is inclined at the upper end and that gradually decreases in diameter downward. The area of the upper gap formed between the conical cylindrical portion and the cylindrical body in the overflow surface along the inclined conical cylindrical portion upper end is formed in the conical cylindrical portion in contact with the lower end of the cylindrical body. The diameter of the cylindrical body is set to be larger than the area of the lower gap formed between the conical cylindrical portion and the cylindrical body, and the area gradually increases from the lower gap toward the upper gap. The trap for floor waterproof pan according to claim 1, wherein the trap is set. 9. A bottomed tubular trap body whose upper opening is connected to a waterproof pan on the floor and whose outlet is connected to a drain pipe, drainage is accommodated in the trap body, and drainage is introduced from a drainage inlet at an upper end. In a trap for a waterproof pan on a floor provided with a cylindrical body forming a trap body and a water sealing portion, and a strainer provided on the drainage inlet side of the cylindrical body to prevent inflow of solid matter, A connection part for connecting the drainage port and the drainage pipe connection part, wherein a lower part is curved so as to impart a pulling force to the drainage side to the drainage, and a trap for a floor waterproof pan is characterized in that it is formed. .