JP2013104252A - Drain trap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drain trap which secures water sealing height without attaching water sealing parts, and prevents drainage performance from being deteriorated.SOLUTION: A drain trap includes: a trap body 12 into which a drain port pipe for flowing water is inserted from above, and in which a sealing water part is composed of the drain port pipe and a peripheral wall 40A; a drain part which is formed on the peripheral wall 40A of the trap body 12 and discharges the water through the sealing water part; an opening 48 which is formed on the peripheral wall 40A and flows the water into the trap body 12; a sealing water adjustment part 50 which gradually reduces its width and extends toward an inner side of the trap body from the outer edge of the ceiling side of the opening 48, and closes the opening on the ceiling side of the opening 48; and a recess 56 which faces the sealing water adjustment part 50 to extend to at the same position with a tip 50A of the sealing water adjustment part 50 or to the inner side of the trap body 12 from the tip 50A of the sealing water adjustment part 50, and is recessed in the same shape with the bottom surface side of the opening 48.

Description

  The present invention relates to a drain trap.

  In a drain outlet of a bathroom or the like, a drain trap for storing water in a sealed water portion to prevent malodors and pests from a sewer pipe is provided. In recent years, the floor has been lowered to cope with barrier freeness, and a thin drainage trap is required. Here, even if it is thin, there is a drainage trap in which a sealing part is provided in the trap body in order to ensure the sealing height of the sealing part and not to impair drainage performance (for example, patent document) 1).

  However, in this drain trap, a step is formed below the sealing part, and an area that cannot be punched, that is, a so-called undercut occurs. Therefore, the sealing part and the trap body cannot be integrally formed, and the sealing part is separately provided. It is attached to the trap body.

JP 2007-303193 A

  In consideration of the above, the present invention has an object to provide a drainage trap that ensures the sealing water height without attaching sealing parts or the like and that does not impair drainage performance.

  The drain trap according to claim 1, wherein a drain port pipe through which water flows is inserted from above, a trap body that forms a sealed portion with the drain port pipe and a peripheral wall, and the peripheral wall of the trap body. A drainage portion for draining water through the sealing portion, an opening formed in the peripheral wall for allowing water to flow into the trap body, and a contraction toward an inner side of the trap body from an outer edge on the ceiling side of the opening portion. A seal adjustment part that extends in width and closes the opening on the ceiling side of the opening, and the same position as the tip of the seal adjustment part facing the seal adjustment part, or the tip of the seal adjustment part And a recess that extends inward from the trap body and is recessed in the same shape as the bottom surface of the opening.

  In the drain trap according to claim 1, the sealing portion is constituted by the drain port pipe inserted from the upper part of the trap body and the peripheral wall of the trap body. Water flowing into the trap body from the drain pipe is drained from the drainage section through the sealing section. Further, a sealing adjustment portion extends from the outer edge on the ceiling side of the opening formed in the peripheral wall of the trap body toward the inside of the trap body, and closes the opening on the ceiling side of the opening. Thereby, even if the water level of a sealing part falls to the ceiling side of an opening part, it does not break. In other words, the height of the sealed water can be secured without attaching sealed parts or the like.

  Further, the concave portion formed to face the sealing water adjusting portion extends to the inside of the trap body from the same position as the leading end portion of the sealing water adjusting portion or from the leading end portion of the sealing water adjusting portion, and the bottom surface side of the opening portion. It is recessed in the same shape. For this reason, a mold can be inserted into the inside and the recessed portion of the seal adjustment part from the opening, and a mold can be inserted from the trap body side to the outside of the seal adjustment part. Cut does not occur. Therefore, the trap body and the sealing water adjusting part can be integrally formed.

  Furthermore, the sealing water adjusting portion extends in a reduced width toward the inside of the trap body. For this reason, the opening area of the recessed part facing a sealing water adjustment part is large toward the front-end | tip part of a sealing water adjustment part. That is, when viewed in a plan view, there is a region where water enters from between the sealing adjustment portion and the recess, so that the drainage performance of the drain trap is not impaired. In addition, the ease of punching is improved.

  In the drain trap according to claim 2, the height of the sealing water adjusting portion decreases from the opening to the tip.

  In the drain trap according to claim 2, since the height of the sealing water adjusting portion is lowered from the opening portion toward the tip portion, the water flowing on the ceiling side of the opening portion can be smoothly guided downward. .

  According to a third aspect of the present invention, in the drain trap, the sealing adjustment portion is curved and formed in an arch shape.

  In the drain trap according to the third aspect, the mold can be removed without difficulty because the sealing adjustment portion has a curved arch shape. Moreover, the resistance of the water flowing through the sealing water adjustment unit can be reduced as compared with the case where the sealing water adjustment unit is square.

  In the drain trap according to claim 4, the bottom surface of the trap body is formed at the same height as the bottom surface of the opening.

  In the drain trap according to claim 4, the bottom of the trap body is raised to the same height as the bottom of the opening, thereby forming a thin drain trap.

  In the drain trap according to claim 5, the bottom surface of the trap body is formed above the bottom surface of the opening, and the recess is formed by recessing the bottom surface of the trap body.

  In the drainage trap according to the fifth aspect, the trap main body is thin as a whole because a part of the bottom surface of the trap main body is recessed to form a recess.

  Since this invention was set as said structure, while being able to ensure the sealing water height without attaching sealing parts etc., drainage performance is not impaired.

It is sectional drawing which shows the drain trap which concerns on embodiment of this invention. It is a disassembled perspective view of the drain trap concerning the embodiment of the present invention. It is a section perspective view of the trap main part concerning the embodiment of the present invention. It is explanatory drawing for demonstrating the shaping | molding method of the trap main body which concerns on embodiment of this invention. It is a section perspective view showing the modification of the trap body concerning the embodiment of the present invention.

  A drain trap according to an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the drain trap 10 is provided in a drain port 102 formed in a washing place 100 such as a unit bath or a shower unit constituted by a waterproof floor or the like. A trap body 12 constituting the drain trap 10 is disposed below the drain port 102.

  As shown in FIG. 2, the trap body 12 is a substantially cylindrical resin member integrally formed by injection molding or the like. The trap body 12 includes a ring member 14, a flange member 16, a drain pipe 18, and eyes. The drainage trap 10 is configured by attaching the dishes 20 in order. Further, between the ring member 14 and the flange member 16, a packing 22 attached to a step portion 100A formed in the washing place 100 of the unit bath is sandwiched (see FIG. 1).

  As shown in FIG. 1, a lateral tube 24 and a drainage portion 26 are formed on the peripheral wall 12 </ b> A of the trap body 12. A ring member 14 is attached to the opening 28 at the top of the trap body 12. The ring member 14 is a resin member having an annular lid portion 14A, and a thread groove is formed on the inner circumferential surface of the annular leg portion 14B bent downward from the inner circumferential end portion of the lid portion 14A in the circumferential direction. Is formed (see FIG. 2).

  The ring member 14 is formed with an annular press-fit portion 14C extending downward from the outer peripheral end portion of the lid portion 14A. The press-fit portion 14C is press-fitted into the inner peripheral wall of the opening 28 of the trap body 12, and is supported by a step portion 12B formed on the inner peripheral wall.

  A flange member 16 is screwed into the inner peripheral surface of the leg portion 14B of the ring member 14. The flange member 16 is a cylindrical resin member, and a flange 16 </ b> A projecting outward in the radial direction is formed at the upper end portion of the flange member 16. The flange 16 </ b> A is supported by a stepped portion 100 </ b> A formed in the drain outlet 102 of the washing place 100 via the packing 22. Further, the upper surface of the flange member 16 is formed to have the same height as the washing place 100.

  An annular receiving portion 30 projecting radially inward is formed at the lower end portion of the inner peripheral surface of the flange member 16. The receiving part 30 has protrusions 30A formed at equal intervals in the circumferential direction of the flange member 16, and a plurality of convex parts 30B are formed above the protrusions 30A (see FIG. 2).

  A drain port 18 is inserted into the flange member 16. The drain port pipe 18 includes a vertically long and cylindrical tube portion 32 and a diameter-increased portion 34 that is formed at the upper end portion of the tube portion 32 and has a diameter increased upward. The upper end portion of the enlarged diameter portion 34 extends in the radial direction to form a flange 34 </ b> A, and is engaged with a protrusion 30 </ b> A formed on the receiving portion 30 of the flange member 16. A rib 36 is formed on the inner peripheral wall of the enlarged diameter portion 34. Further, the lower end portion of the cylindrical portion 32 extends to the vicinity of the bottom surface 12 </ b> C of the trap body 12.

  Above the drain pipe 18, the eye plate 20 is fitted into the flange member 16. The eye plate 20 has a cross-sectional hat shape recessed downward, and a plurality of through holes 20A are formed on the surface. Further, a groove portion 38 is formed in the circumferential direction on the side surface of the eye plate 20 and is engaged with a convex portion 30 </ b> B formed on the flange member 16. Further, the top surface of the eye plate 20 is formed to be flush with the top surface of the flange member 16.

  Next, the details of the structure of the trap body 12 will be described.

  The inside of the trap body 12 is partitioned by a cylinder body 40, and a sealed portion 42 is constituted by the peripheral wall 40 </ b> A of the cylinder body 40 and the cylindrical portion 32 of the drain port 18 inserted into the peripheral wall 40 </ b> A. Further, a drainage chamber 44 is formed between the peripheral wall 40 </ b> A of the cylinder main body 40 and the peripheral wall 12 </ b> A of the trap main body 12. An annular bottom 46 is formed in the drainage chamber 44 so as to surround the upper peripheral wall 40 </ b> A of the cylinder body 40, and the water in the sealing portion 42 flows over the peripheral wall 40 </ b> A to the drainage chamber 44. Here, the bottom 46 of the drainage chamber 44 is positioned above the bottom 46B on the right side in the figure where the drainage part 26 is formed, with the bottom 46A on the left side in the figure where the horizontal pipe 24 is formed. Inclined downward from the bottom 46A to the bottom 46B.

  A cylindrical drainage portion 26 communicating with the drainage chamber 44 is formed on the peripheral wall 12 </ b> A of the trap body 12. The drainage portion 26 includes a small-diameter portion 26A whose bottom surface side is connected to the bottom portion 46B and a large-diameter portion 26B that is formed radially outside the small-diameter portion 26A. Is substantially orthogonal to the axial direction. A sewage pipe 104 is connected to the large diameter part 26B, and the water that has flowed from the sealed part 42 over the upper end of the peripheral wall 40A into the drainage chamber 44 flows from the drainage part 26 through the sewage pipe 104 to the sewer. The

  An opening 48 of the horizontal pipe 24 is formed in the peripheral wall 12A located below the bottom 46A side of the drainage chamber 44. The axial direction of the horizontal tube 24 is formed so as to be orthogonal to the axial direction of the tube body 40, and the bottom surface of the horizontal tube 24 and the bottom surface of the tube body 40 are at the same height. In addition, one end side of the horizontal tube 24 is opened, and a pipe 106 connected to a bathtub (not shown) is connected. The other end side of the horizontal tube 24 communicates with the sealing portion 42 through the opening 48.

  Here, as shown in FIG. 3, a sealing water adjusting portion 50 extending from the outer edge on the ceiling side of the opening 48 to the inside of the tube main body 40 is formed on the peripheral wall 12 </ b> A of the trap main body 12. The sealing water adjusting part 50 has a triangular shape in a top view, and the width of the sealing part 50 is reduced from the opening part 48 toward the tip part 50 </ b> A to close the opening on the ceiling side of the opening part 48. Moreover, the surface shape of the sealing water adjustment part 50 is curving and formed in the arch shape, and the cross-sectional shape cut | disconnected in the perpendicular direction is a substantially reverse U-shape. Furthermore, the height of the sealing water adjusting unit 50 is formed so as to gradually decrease toward the tip 50A.

  The bottom surface 50B of the sealing water adjusting portion 50 is located in the vicinity of the bottom surface 12C of the trap body 12 like the lower end portion of the cylindrical portion 32 of the drain pipe 18, and an opening 52 having a triangular shape is formed. Yes. Further, the opening surface of the opening 52 is parallel to the bottom surface 12 </ b> C of the trap 12.

  On the bottom surface 12 </ b> C of the trap body 12, a pedestal portion 54 that extends in the axial direction of the horizontal tube 24 from the peripheral wall 12 </ b> A of the trap body 12 is provided so as to face the sealing adjustment portion 50. The pedestal portion 54 is formed in a shape obtained by hollowing out the upper surface of the quadrangular pyramid shape into a substantially semi-cylindrical shape, and extends from the distal end portion 50 </ b> A of the sealing water adjusting portion 50 to the inside of the trap body 12. In addition, a recessed portion 56 that is recessed in the same shape as the bottom surface side of the opening 48 is formed in the upper portion of the pedestal portion 54. The recessed portion 56 is formed from end to end of the pedestal portion 54, and one end portion of the recessed portion 56 constitutes the same surface as the bottom surface of the opening 48.

  In the present embodiment, the bottom surface of the opening 48 and the bottom surface 12C of the trap body 12 are formed at the same height. However, the present invention is not limited to this configuration. For example, the bottom surface of the opening 48 is the bottom surface of the trap body 12. It may be formed at a position higher than 12C. Here, since the height of the pipe 106 connected to the horizontal pipe 24 is determined, the overall height of the drain trap 10 is determined by the positional relationship between the bottom surface 12C of the trap body 12 and the bottom surface of the opening 48. . For example, in the present embodiment, the overall height of the drain trap 10 is lower than when the bottom surface 12 </ b> C of the trap body 12 is formed below the bottom surface of the opening 48.

  Moreover, although the recessed part 56 was extended inside the trap main body 12 from 50A of front-end | tip parts of the sealing water adjustment part 50, you may be formed in the same length as the sealing water adjustment part 50. Further, the sealing water adjusting portion 50 is formed in a triangular shape in a top view, but is not particularly limited to this shape. For example, if the width is reduced toward the tip portion 50A, for example, a semicircle in a top view Or may be formed in a trapezoidal shape.

  Next, a method for forming the trap body 12, the drainage part 26, the horizontal pipe 24, and the sealing water adjustment part 50 according to the present embodiment will be described.

  As shown in FIG. 4, the trap body 12, the horizontal pipe 24, the drainage part 26, and the sealing water adjustment part 50 according to this embodiment are integrally formed by injection molding. A mold 60 used for injection molding includes a first mold part 60A and a second mold part 60B that open and close in the directions of arrows E and F, a third mold part 60C that slides in the directions of arrows G and H, and a first mold part 60C. It is comprised by 4 metal mold | die part 60D.

  First, a resin as a raw material of the trap body 12 is heated by a heater (not shown) or the like and injected into a mold 60 adjusted to a constant temperature. The injected resin is filled in the cavity formed by the mold 60 and becomes the shape of the trap body 12. Thereafter, the mold 60 is cooled while the pressure is applied, the resin is pressed and hardened, the mold is removed, and the trap body 12 is taken out.

  Here, when taking out the trap body 12 from the mold 60, the first mold part 60A and the second mold part 60B are moved in the directions of arrows E and F, and the third mold is interlocked with this movement. The part 60C and the fourth mold part 60D are slid in the directions of arrows G and H. At this time, if the concave portion 56 shown in FIG. 3 is shorter than the sealing water adjusting portion 50, the region below the sealing water adjusting portion 50 becomes an undercut in which the first mold portion 60A cannot enter, as in the present embodiment. Since the recess 56 is formed on the inner side of the trap body 12 with respect to the front end portion 50A of the sealing water adjusting portion 50, an undercut does not occur.

  Moreover, since the sealing water adjustment part 50 is extended from the outer edge by the side of the ceiling of the opening part 48, and the recessed part 56 is dented in the same shape as the bottom face side of the opening part 48, it is sealed by 4th metal mold | die part 60D. The inside of the adjustment part 50 and the recessed part 56 can be formed. Further, the outside of the sealing water adjusting unit 50 is formed by the first mold unit 60A. The trap body 12 thus injection-molded is assembled with other parts after deburring or the like as secondary processing.

  In the present embodiment, the first mold part 60A and the second mold part 60B are opened up and down, and the third mold part 60C and the fourth mold part 60D are slid. It may be a mold 60 for performing die cutting by opening the part 60C and the fourth mold part 60D up and down. Moreover, in this embodiment, although the trap main body 12 was shape | molded by injection molding, it is not limited to this method in particular, You may shape | mold by another method. For example, it may be formed by hollow molding or the like.

  Further, in the present embodiment, the sealing water adjusting portion 50 is formed integrally with the trap body 12, but the sealing water adjusting member 50 may be separately prepared and attached to the outer edge of the opening 48 on the ceiling side. In this case, if there is a gap in the mounting surface, the air on the sewage pipe 104 side flows into the horizontal pipe 24 from the gap and breaks, so the outer edge of the opening 48 and the sealing adjustment member are Seal the gap.

  Next, the operation of the drain trap 10 according to the present embodiment will be described with reference to FIG.

  In the normal state, the water is stored in the sealed portion 42 up to the upper end portion of the tube main body 40. In addition, water is stored and sealed in the drain outlet pipe 18 up to the same water level as that of the sealing portion 42. Further, the horizontal pipe 24 and the pipe 106 communicating with the sealing portion 42 are filled with water up to the ceiling of the horizontal pipe 24. At this time, the air from the sewage pipe 104 side fills the drainage chamber 44, but is sealed by the water stored in the sealing part 42 and the drain pipe 18, so the air on the sewage pipe 104 side Is prevented from flowing to the horizontal tube 24 and the washing place 100. As a result, malodors and pests from the sewer pipe 104 are prevented.

  In this state, when water flows into the drain trap 10 from the opening 102 of the washing place 100, the water flows from the cylindrical portion 32 of the drain port pipe 18 into the sealed water portion 42 and is stored in the sealed water portion 42. To join. Thereby, the water level of the sealing part 42 rises, and a part of the water flows over the peripheral wall 40 </ b> A of the cylinder body 40 and flows into the drainage chamber 44. The water that has flowed into the drainage chamber 44 flows from the bottom 46B side of the drainage chamber 44 to the drainage portion 26, and is drained to a sewer (not shown) through the sewer pipe 104.

  Further, when water is caused to flow from the bathtub side (not shown) to the pipe 106, the water filling the horizontal pipe 24 flows from the opening 48 to the recess 56 and is pushed out to the sealing portion 42. At this time, as shown in FIG. 3, the water flowing on the ceiling side of the opening 48 is guided downward along the inclined surface of the sealing water adjusting unit 50, and the opening formed on the bottom surface 50 </ b> B of the sealing water adjusting unit 50. 52 flows into the recess 56. Further, the water flowing into the concave portion 56 flows in the axial direction of the horizontal tube 24 (in the direction of arrow W1) and flows into the sealed portion 42, or climbs over the pedestal portion 54 in the direction of arrow W2 to enter the sealed portion 42. Flow into. In this way, even if the opening 48 on the ceiling side of the horizontal tube 24 is closed by the sealing water adjusting unit 50, the drainage performance is not impaired.

  The water that has flowed into the sealed water part 42 merges with the water stored in the sealed water part 42 to raise the water level of the sealed water part 42, and as described above, a part of the water moves around the peripheral wall 40 </ b> A of the cylinder body 40. It overflows and drains from the drainage chamber 44 through the sewer pipe 104 to a sewer (not shown).

  Here, even if the sealed water part 42 is filled with water, if the state where water does not flow from the washing place 100 or the bathtub continues, the water stored in the sealed water part 42 evaporates, and the sealed water part 42 and the drain port The water level in the pipe 18 gradually decreases. Further, as the water level of the sealed water portion 42 decreases, the air on the sewer pipe 104 side flows into the sealed water portion 42. If the water level of the sealing part 42 is lowered by the height h1 from the upper end of the cylinder main body 40 and reaches the height of the opening 48, if the sealing adjustment part 50 is not formed, Air flows into the horizontal tube 24 from the opening 48 and flows out to a bathtub (not shown). However, in this embodiment, since the sealing water adjusting part 50 is formed, the air on the sewer pipe 104 side does not flow into the horizontal pipe 24 even if the water level of the sealing part 42 is lowered by h1.

  Next, the water stored in the sealed water portion 42 further evaporates by h2, and the water level of the sealed water portion 42 is lowered to the bottom surface 50B of the sealed water adjusting portion 50 or the lower end portion of the cylindrical portion 32 of the drain port 18. For the first time, the air on the sewage pipe 104 side flows into the drain pipe 18 and the horizontal pipe 24 and is sealed. Therefore, in the drain trap 10 according to the present embodiment, by forming the sealing water adjustment unit 50, the sealing water height until breaking can be increased by the height h <b> 2 of the sealing water adjustment unit 50. In this embodiment, the sealing water height (h1 + h2) from the upper end portion of the peripheral wall 40A of the cylinder body 40 to the bottom surface 50B of the sealing water adjusting unit 50 is about 50 mm, and a sufficient sealing water height is ensured. ing.

  Moreover, in this embodiment, although the sealing water adjustment part 50 becomes low toward the front-end | tip part 50A, it does not specifically limit to this shape. For example, it may extend in the axial direction of the horizontal tube 24 to the distal end portion 50 </ b> A of the sealing adjustment unit 50.

  Further, in the present embodiment, the sealing water adjusting unit 50 is curved and formed in an arch shape, but may be formed in an angular shape without being curved. In this case, the molding conditions such as the temperature of the fourth mold part 60D shown in FIG. 4 are changed, or the fourth mold part 60D is surface-treated to make it slippery. It is necessary to make it easy to slide in the direction of.

  Furthermore, as shown in FIGS. 2 and 3, the trap body 12 according to the present embodiment is formed such that the bottom surface of the opening 48 and the bottom surface 12 </ b> C of the trap body 12 have the same height, and the pedestal portion 54. However, the bottom surface 12C of the trap body 12 may be formed higher than the bottom surface of the opening 48 as in the drain trap 11 shown in FIG. In this case, the bottom surface 12 </ b> C of the trap body 12 is recessed to form the recess 62.

  In such a drain trap 11, the bottom surface 12 </ b> C of the trap body 12 can be formed high, so that it can be made thinner as a whole as compared with the drain trap 10. Moreover, since the opening surface of the opening part 52 of the sealing water adjustment part 50 becomes the same height as the bottom face 12C of the trap main body 12, unless the water level stored in the sealing water part 42 falls to the bottom face 12C of the trap main body 12 The air on the sewage pipe 104 side does not flow into the horizontal pipe 24.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to such embodiment, Of course, in the range which does not deviate from the summary of this invention, it can implement in a various aspect. For example, a plurality of horizontal tubes 24 may be connected to the trap body 12.

DESCRIPTION OF SYMBOLS 10 Drain trap 11 Drain trap 12 Trap main body 12A Perimeter wall 12B Bottom face 18 Drain port pipe 26 Drain part 40A Perimeter wall 48 Opening part 50 Sealing adjustment part 56 Recess 62 Recess

Claims (5)

A trap main body in which a drain pipe into which water is allowed to flow is inserted from above, and which forms a sealed part with the drain pipe and the peripheral wall,
A drainage part formed on the peripheral wall of the trap body and draining water through the sealing part;
An opening formed in the peripheral wall for allowing water to flow into the trap body;
A sealing adjustment portion extending from the outer edge of the opening to the inside of the trap body and closing the ceiling-side opening of the opening;
Opposite to the seal adjustment part, the same position as the tip of the seal adjustment part, or extending from the tip of the seal adjustment part to the inside of the trap body, recessed in the same shape as the bottom side of the opening A recess,
Having a drain trap.   The drainage trap according to claim 1, wherein the sealing water adjusting portion has a height that decreases from the opening toward the tip.   The drainage trap according to claim 1 or 2, wherein the sealing water adjusting portion is curved and formed in an arch shape.   The drain trap according to any one of claims 1 to 3, wherein a bottom surface of the trap body is formed at the same height as a bottom surface of the opening.   The drain trap according to any one of claims 1 to 3, wherein the bottom surface of the trap body is formed above the bottom surface of the opening, and the recess is formed by recessing the bottom surface of the trap body. .

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