Drainage trap
By combining a water-sealing cup and a drainage induction pipe, the problem of the water-sealing function of the drainage trap failing after a long period of no water use is solved, effectively preventing foul odors and insect intrusion.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 崔敬植
- Filing Date
- 2025-07-03
- Publication Date
- 2026-06-02
AI Technical Summary
Existing drain traps will dry out after a long period of no water use, causing them to lose their function of preventing odors and insect intrusion.
A combined structure of a water-sealing cup and a drainage induction pipe was designed. The water-sealing cup is provided with a drainage hole, and the drainage induction pipe can be embedded in the water-sealing cup to close or open the drainage hole. The water-sealing function is achieved through a rotation and snap-fit structure, and the water trap body is connected by threads.
Even when water is not used for a long time, it can effectively prevent foul odors and insects from entering through the drain pipe, maintain the water sealing function, and avoid the problem of the water sealing cup failing due to the water drying out.
Smart Images

Figure CN122129080A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a drainage trap, and more particularly to a drainage trap that can effectively prevent foul odors or insect intrusion caused by prolonged disuse. Background Technology
[0002] Typically, drain pipes for discharging domestic sewage are buried inside the floor of places such as bathrooms or toilets, while drain traps are installed on the ground that connect to the drain pipes to filter out domestic sewage and prevent odors from entering the room through the drain pipes.
[0003] A typical water trap includes: a water collection section, which is a plate-shaped part with a central hole and is buried in the ground with its upper side exposed; a water trap body, which has a pipe fastening part protruding downward from the center to connect with a drain pipe buried in the ground; a filter plate, which is a plate-shaped part with multiple drainage holes and is covered inside the water collection section of the water trap body; a sealing cup, whose upper edge is placed inside the pipe fastening part of the water trap body and has drainage holes formed on its side wall; and a sealing component, whose upper end is forcibly embedded inside the sealing cup to induce water to move to the lower part of the sealing cup.
[0004] When wastewater, such as domestic sewage, is discharged into the drain trap as described above, foreign objects such as dirt or residue will be filtered through the filter plate. The filtered water will then pass through the drain inlet pipe and the sealing cup, and finally be discharged into the drain pipe through the drain outlet of the sealing cup. After drainage is complete, the sealing cup will be filled with water at the bottom of the drain hole, thus preventing foul odors and insect intrusion.
[0005] However, when water is not used for a long time in places where a drain trap is installed, the water in the trap will dry out, causing the trap to lose its ability to prevent odors and insect intrusion.
[0006] Existing technical documents
[0007] Patent documents
[0008] Korean Patent No. 10-2723037, "Odor Blocking Device for Drainage Outlets" Summary of the Invention
[0009] The purpose of this invention is to solve the problems described above by providing a drain trap that can block the outer and inner spaces with a sealing cup as the center, even when there is no water discharge for a long time, thereby effectively preventing foul odors from the drain pipe and insect intrusion.
[0010] To achieve the objectives described above, the drainage trap of the present invention may include: a sealing cup, which is a cylindrical shape with an open upper part and a hollow interior, and a drainage hole formed along the outer periphery for a certain length on a side wall portion at a certain height from the lower end; and a drainage guide tube, which is a tubular shape with an open upper and lower part, the upper end of which is forcibly embedded into the sealing cup inside the sealing cup, and the lower end located between the lower end of the sealing cup and the drainage hole; the side wall of the drainage guide tube may include a first side wall portion that is close to the sealing cup and a second side wall portion that is spaced apart from the sealing cup 100, and the drainage hole may be closed by the first side wall portion or opened by being spaced apart from the second side wall portion depending on the direction in which the drainage guide tube is embedded into the sealing cup.
[0011] Furthermore, the sealing cup may form a first locking sill along the lower outer periphery adjacent to the drain hole, and the drain induction pipe may form a second locking sill corresponding to the first locking sill at least on the first side wall.
[0012] Furthermore, the upper end of the drainage induction pipe can be placed on the mounting ridge formed on the inner side of the upper end of the sealing cup. Along the outer periphery of the side wall, at the first position corresponding to the middle position of the first side wall and the second position corresponding to the middle position of the second side wall, the pipe can protrude outward to form a guide protrusion. The sealing cup can be recessed outward at the upper end to form a guide groove corresponding to the guide protrusion.
[0013] In addition, the drainage induction pipe may be equipped with a handle formed in an arc shape, corresponding to the first position and the second position, on the inner side of the upper end of the drainage induction pipe in a manner in which both ends are rotatable.
[0014] In addition, it may include: a water trap body, comprising a water collection part that is plate-shaped with a central hole and buried in the ground with its upper side exposed, and a pipe fastening part that protrudes downward from the inner edge of the water collection part with the central hole for connection with a drain pipe buried in the ground; the water sealing cup, the upper edge of which can be threaded into a break-edge formed inside the water collection part, and the water sealing cup can be rotated to engage or disengage with the water collection part by reversing the drain induction pipe that is separated from the inner side of the water sealing cup and engaging it with the upper end of the water sealing cup.
[0015] Through this invention, drainage can be carried out normally by embedding the drainage guide pipe into the sealing cup with its first sidewall attached to the sidewall of the sealing cup facing the drainage hole. In places where water is not used for a long time, the drainage guide pipe can be embedded into the sealing cup with its first sidewall attached to the sidewall of the sealing cup with the drainage hole to seal the drainage hole. This effectively prevents foul odors and insect intrusion from the drainage pipe by blocking the outer and inner spaces with the sealing cup as the center. Attached Figure Description
[0016] Figure 1 This is a perspective view illustrating the separation state of the sealing cup and the drainage induction pipe in the drainage trap applicable to the present invention.
[0017] Figure 2 This is a side view illustrating the separation state of the sealing cup and the drainage induction pipe in the drainage trap applicable to the present invention.
[0018] Figure 3 This is a cross-sectional view illustrating the state in which the drain induction pipe is embedded in the sealing cup with the drain hole closed in the drain trap of the present invention.
[0019] Figure 4 This is a cross-sectional view illustrating the state in which the drain induction pipe is embedded in the sealing cup with the drain hole open in the drain trap of the present invention.
[0020] Figure 5 This is a plan view illustrating the state in which the sealing cup and drainage induction pipe in the drainage trap applicable to the present invention are guided and combined by the guide groove and guide protrusion.
[0021] Figure 6 as well as Figure 7 This is a cross-sectional view illustrating an example of reversing the drain induction pipe in the drain trap applicable to the present invention, thereby separating the sealing cup from the main body of the trap.
[0022] Explanation of reference numerals in the attached figures
[0023] 100: Sealed Water Cup
[0024] 110: Drain hole
[0025] 120: First card to the hurdle
[0026] 130: Guide slot
[0027] 140: Resettlement embankment
[0028] 200: Drainage induction pipe
[0029] 210: Second card connects to the hurdle
[0030] 230: Guide protrusion
[0031] 240: Handle
[0032] 300: Main body of the water trap
[0033] 300a: Water collection section
[0034] 300b: Pipe fastener
[0035] 400: Filter plate Detailed Implementation
[0036] This invention proposes a drainage trap that can effectively prevent foul odors from drain pipes and insect intrusion by blocking the outer and inner spaces with a sealing cup as the center, even when there is no water discharge for a long time. The trap is characterized by comprising: a sealing cup, which is a cylindrical shape with an open upper part and a hollow interior, and a drainage hole formed along the outer periphery for a certain length on a side wall portion at a certain height from the lower end; and a drainage guide tube, which is a tubular shape with both upper and lower parts open, the upper end of which is forcibly embedded inside the sealing cup, and the lower end located between the lower end of the sealing cup and the drainage hole; the side wall of the drainage guide tube may include a first side wall portion that is close to the sealing cup and a second side wall portion that is spaced apart from the sealing cup 100, and the drainage hole can be closed by the first side wall portion or opened by being separated from the second side wall portion depending on the direction in which the drainage guide tube is embedded in the sealing cup.
[0037] The scope of the claims of this invention is not limited to the embodiments described below, but various modifications can be made by those skilled in the art without departing from the spirit of the invention.
[0038] Next, please refer to Figures 1 to 7 The drainage trap of the present invention will be described in detail.
[0039] The drainage trap of the present invention basically includes a water-sealing component installed inside the trap body 300, which is installed on the floor of a bathroom or toilet for drainage purposes. The water-sealing component, such as... Figures 1 to 7 As shown, it includes a water-sealing cup 100 and a drainage induction pipe 200.
[0040] The sealing cup 100 is constructed in a cylindrical shape that is open at the top and hollow inside, and is formed in a cylindrical shape with a circular cross-section, but is not limited to this. Furthermore, the sealing cup 100, as... Figures 1 to 4 As shown, a drain hole 110 is formed at a certain height from the lower end of the side wall. The drain hole 110 is formed with a certain length along the outer periphery of the water-sealing cup 100 and a certain width along the vertical direction of the water-sealing cup 100. Therefore, when water flows into the water-sealing cup 100, the water will be discharged into the drain pipe through the drain hole 110. During the process described above, a certain amount of water will fill the lower space of the drain space 110 of the water-sealing cup 100.
[0041] The drain induction tube 200 is a tubular shape with a length shorter than the vertical length of the sealing cup 100 and open at both ends. Its lower end is positioned between the lower end of the sealing cup 100 and the drain hole 110, so that when water flows in, it can be discharged through the lower space of the drain hole 110 within the sealing cup 100. As described above, the upper end of the drain induction tube 200 can be forcibly embedded into the sealing cup 100, and can be separated from the sealing cup 100 when pulled upwards while still attached to it.
[0042] In particular, the drainage induction pipe 200 of the present invention can close or open the drainage hole 110 depending on the direction in which it is embedded in the sealing cup 100. As an example, the sidewall of the drainage induction pipe 200 is as follows: Figures 1 to 4 As shown, it includes a first sidewall portion 200a that is attached to the inner side of the water-sealing cup 110 and a second sidewall portion 200b that is separated from the inner side of the water-sealing cup 110.
[0043] Specifically, the first sidewall portion 200a can be formed such that its outer surface corresponds to the inner surface of the sealing cup 110, and the sidewall of the drain induction pipe 200 is composed of the first sidewall portion 200a with a length at least corresponding to the length of the drain hole 110. In addition, the second sidewall portion 200b can be formed such that the distance between it and the inner surface of the sealing cup 110 increases as it approaches the bottom.
[0044] like Figure 3 As shown, when the drain induction pipe 200 is inserted into the water-sealing cup 100 such that its first sidewall portion 200a is pressed against the sidewall portion of the water-sealing cup 100 having the drain hole 110, the drain hole 110 will be closed by the first sidewall portion 200a, and as... Figure 4 As shown, when the drain induction pipe 200 is inserted into the sealing cup 100 with its first sidewall portion 200a pressed against the sidewall portion of the sealing cup 100 facing the drain hole 110, the drain hole 110 will be open, separated from the second sidewall portion 200b. That is, the user can drain water normally by inserting the drain induction pipe 200 into the sealing cup 100 with its first sidewall portion 200a pressed against the sidewall portion of the sealing cup 110 facing the drain hole 110. However, in places where a drain trap is installed and water is not used for a long time, the drain induction pipe 200 can be inserted into the sealing cup 100 with its first sidewall portion 200a pressed against the sidewall portion of the sealing cup 100 where the drain hole 110 is formed, thus sealing the drain hole 110. This effectively prevents foul odors and insect intrusion from the drain pipe by blocking the outer and inner spaces with the sealing cup 100 as the center.
[0045] Meanwhile, when the drain induction pipe 200 is embedded into the water seal cup 100 with the drain hole 110 closed, in order to improve the blocking effect on the foul odor flowing in through the gap between the drain induction pipe 200 and the water seal cup 100, a break can be formed on the water seal cup 100 and the drain induction pipe 200.
[0046] As an example, a sealed water cup 100... Figure 3 as well as Figure 4 As shown, a first retaining sill 120 can be formed along the lower outer periphery adjacent to the drain hole 110. Specifically, with the lower end of the drain hole 110 as a reference, the inner circumferential surface of the lower sealing cup 100 sidewall is formed at a position biased inwards compared to the inner circumferential surface of the lower sealing cup 100 sidewall, thereby forming the first retaining sill 120. Furthermore, the drain induction pipe 200 can at least form a second retaining sill 210 corresponding to the first retaining sill 120 in the first sidewall portion 200a.
[0047] In this way, such as Figure 3 As shown, when the drain induction pipe 200 is embedded into the sealing cup 100 with the drain hole 110 closed, the second retaining sill 210 will be placed on the first retaining sill 120, and the gap between the drain induction pipe 200 and the sealing cup 100 will form a bent shape, thereby more effectively preventing foul odors from flowing in through the gap.
[0048] Furthermore, at the upper end of the sealing cup 100, a first flange can be formed by protruding outward along the outer periphery to accommodate the water trap body 300. At the upper end of the drain guide pipe 200, a second flange can be formed by protruding outward along the outer periphery to accommodate the first flange. The upper end of the drain guide pipe 200, i.e., the second flange, is as follows: Figure 3 as well as Figure 4 As shown, it can be placed on the mounting pedestal 140 formed on the inner side of the upper end of the sealing cup 100, i.e., the first flange.
[0049] Furthermore, to determine the orientation in which the drain induction pipe 200 is embedded in the sealing cup 100, so as to completely close or open the drain hole 110 via the first sidewall portion 200a, a raised groove structure can be formed at the upper end of the drain induction pipe 200 and the upper end of the sealing cup 100. As an example, such as... Figures 1 to 5 As shown, at the upper end of the drain induction pipe 200, a guide protrusion 230 can be formed by protruding outward along the outer periphery of the side wall at a first position corresponding to the middle position of the first side wall portion 200a and a second position corresponding to the middle position of the second side wall portion 200b. At the upper end of the sealing cup 100, a guide groove 130 corresponding to the guide protrusion 230 can be formed by recessing outward.
[0050] Therefore, when the drain guide tube 200 is inserted into the water sealing cup 100 with the guide protrusion 230 formed in the first position facing the drain hole 110, the drain hole 110 will be completely closed by the first side wall portion 200a. When the drain guide tube 200 is inserted into the water sealing cup 100 with the guide protrusion 230 formed in the second position facing the drain hole 110, the drain hole 110 will be separated from the second side wall portion 200b and will be open.
[0051] Furthermore, a handle 240 can be provided in the drain induction pipe 200 to facilitate easy separation of the drain induction pipe 200 from the forcibly embedded sealing cup 100 by the user. As an example, the handle 240 is as follows: Figure 1 , Figure 2 as well as Figure 5 As shown, it can be constructed in an arc shape (e.g., a half-ring shape) located on the inner side of the upper end of the drain induction tube 200, and with both ends extending towards the sidewall of the drain induction tube 200, thereby being rotatably connected to the drain induction tube 200. At this time, the two ends of the handle 240 can be connected to a first position and a second position where the guide protrusion 230 is formed, thus preventing the weakening of the strength at the position where the handle 240 is connected in the drain induction tube 200, even when repeatedly performing the action of gripping the handle 240 and lifting it upwards to forcibly separate it from the drain induction tube 200 which is embedded in the water-sealing cup 100.
[0052] Furthermore, as described above, the sealing cup 100 of the present invention is installed inside the water trap body 300 with its upper end placed on it, and the upper end of the sealing cup 100 and the water trap body 300 can be threaded together.
[0053] As an example, such as Figure 3 as well as Figure 4 As shown, the trap body 300 may include a water collection portion 300a, which is a plate-like structure with a central hole and is embedded in the ground with its upper side exposed, and a pipe fastening portion 300b, which protrudes downward from the inner edge of the water collection portion 300a to connect with a drain pipe embedded in the ground. In this case, the upper edge of the sealing cup 100 can engage with the threaded retaining wall formed inside the water collection portion 300a.
[0054] As described above, when connecting or disconnecting the sealing cup 100 from the water collection section 300a, the drain guide pipe 200 can be used. After separating the drain guide pipe 200, which has the guide protrusion 220, from the inside of the sealing cup 100, as... Figure 6 As shown, the drain guide pipe 200 is reversed so that the guide protrusion 220 is embedded in the guide groove 130, and then... Figure 7 As shown, the drain induction pipe 200 rotates on its axis, and the sealing cup 100 rotates on its axis together with the drain induction pipe 200, so that the connection or disconnection between the sealing cup 100 and the water trap body 300 can be easily performed without the use of a separate tool.
Claims
1. A drainage trap, characterized in that, include: A sealed water cup (100) is a cylindrical shape with an open upper part and a hollow interior. Drainage holes (110) are formed along the outer periphery for a certain length on the side wall at a certain height from the lower end; and The drain induction pipe (200) is a tubular shape with open top and bottom. The upper end is forcibly embedded into the water seal cup (100) inside the water seal cup (100), and the lower end is located between the lower end of the water seal cup (100) and the drain hole (110). The sidewall of the drainage induction pipe (200) includes a first sidewall portion (200a) that is attached to the sealing cup (100) and a second sidewall portion (200b) that is separated from the sealing cup (100). Depending on the direction in which the drain induction pipe (200) is embedded into the sealing cup (100), the drain hole (110) is closed by the first sidewall portion (200a) or opened by being separated from the second sidewall portion (200b).
2. The drainage trap according to claim 1, characterized in that: The sealing cup (100) forms a first retaining sill (120) along the lower outer periphery adjacent to the drain hole (110). The drainage induction pipe (200) forms a second snap-fit sill (210) at least on the first side wall portion (200a) corresponding to the first snap-fit sill (120).
3. The drainage trap according to claim 1, characterized in that: The upper end of the drainage induction pipe (200) is placed on the placement sill (140) formed on the inner side of the upper end of the sealing cup (100), and a guide protrusion (230) is formed by protruding outward along the outer periphery of the side wall at a first position corresponding to the middle position of the first side wall portion (200a) and a second position corresponding to the middle position of the second side wall portion (200b). The sealing cup (100) is recessed outward at the upper end to form a guide groove (130) corresponding to the guide protrusion (230).
4. The drainage trap according to claim 3, characterized in that: The drain guide pipe (200) is equipped with a handle (240) formed in an arc shape on the inner side of the upper end of the drain guide pipe (200) in a manner that the two ends are rotatable, corresponding to the first position and the second position.
5. The drainage trap according to claim 3, characterized in that, Also includes: The water trap body (300) includes: a water collection part (300a) which is formed in the form of a plate with a central hole and is buried in the ground with the upper side exposed; and a pipe fastening part (300b) which protrudes downward from the inner edge of the water collection part (300a) with the central hole in order to connect with a drain pipe buried in the ground. The upper edge of the sealing cup (100) is engaged with the broken thread formed inside the water collection part (300a). The water seal cup (100) is rotated to engage or disengage with the water collection part (300a) by reversing the drain induction pipe (200) that is separated from the inside of the water seal cup (100) and then engaging it with the upper end of the water seal cup (100).