A drain pipe for a kitchen sink

By using a detachable locking block and connector structure, and utilizing the elastic locking of the rubber block and the annular groove and the damping hinge, the problem of difficult maintenance of existing kitchen sink drainage pipes is solved, achieving convenient disassembly and efficient sealing, and is suitable for high-temperature and high-humidity kitchen environments.

CN224431562UActive Publication Date: 2026-06-30NINGBO QILI KITCHEN & BATHROOM CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NINGBO QILI KITCHEN & BATHROOM CO LTD
Filing Date
2025-07-17
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing kitchen sink drainage pipes are usually integral or threaded connections. The water traps are prone to aging and clogging, and when damaged, they need to be replaced entirely, which is costly and complicated to maintain.

Method used

It adopts a detachable locking block and connector structure, utilizing the elastic locking of the rubber block and the annular groove, combined with a damping hinge and a magnetic pull ring, to achieve quick assembly and disassembly and a secure connection.

Benefits of technology

It improves the replacement efficiency of corrugated hoses, reduces maintenance difficulty and cost, ensures sealing performance and service life, and is suitable for high-temperature and high-humidity kitchen environments.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to the field of drainage pipe technology and discloses a drainage pipe for a kitchen sink, including two connectors, a connecting pipe fixedly installed at the bottom of the two connectors, a corrugated hose installed on the connecting pipe, and a clamp and a connector respectively fixedly installed at the ends of the connecting pipe and the corrugated hose. The clamp and connector are detachably connected. The outer wall of the connector is made of metal. The clamp and connector are respectively connected to the connecting pipe and the corrugated hose by threads. The clamp is made of rubber and has a through hole for drainage in the center. This utility model achieves the effect of quick disassembly and assembly of bent pipes by using the cooperation of the clamp and connector. The damping hinge rubber block ensures a firm connection, solving the problem of difficult maintenance of traditional integrated pipes. It has the advantages of convenient installation, good sealing performance, and long service life. It is particularly suitable for the high temperature and high humidity environment of the kitchen and greatly reduces maintenance costs.
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Description

Technical Field

[0001] This utility model relates to the field of drainage pipes, and in particular to a drainage pipe for kitchen sinks. Background Technology

[0002] Kitchen sink drain pipes are typically made of plastic materials such as PVC and PP, or metals (such as stainless steel). They mainly consist of a drain outlet, the main pipe body, a water trap (P-type or S-type), and connecting components. Their function is to discharge sewage and prevent backflow of sewer gas. Existing drain pipes usually adopt an integrated design or threaded / clamped connections. Key components such as water traps are in constant contact with oil and hot water, making them prone to aging or clogging. When damaged, it is not convenient to replace parts of the pipe; the entire pipe needs to be replaced, resulting in high maintenance costs, cumbersome operation, and a poor user experience.

[0003] Therefore, a drainage pipe for a kitchen sink was designed. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a drainage pipe for kitchen sinks. It solves the problems that existing kitchen sink drainage pipes are usually integral or threaded connections, and the water traps are prone to aging and clogging due to long-term contact with oil and hot water. They also require complete replacement after damage, which is inconvenient and costly to maintain.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A drain pipe for a kitchen sink includes two connectors, a connecting pipe fixedly disposed at the bottom of the two connectors, a corrugated hose installed on the connecting pipe, and a clamp and a connector respectively fixedly disposed at the ends of the connecting pipe and the corrugated hose. The clamp and the connector are detachably connected, and the outer wall of the connector is made of metal.

[0007] Preferably, the locking block and the connector are respectively connected to the connecting pipe and the corrugated hose via threads. The locking block is made of rubber and has a through hole in the center for drainage.

[0008] Preferably, the card block has an annular groove, and its cross-section is concave in the center and convex on both sides.

[0009] Preferably, the connector has an internal cavity that mates with the card block, and through slots are provided on both sides of the internal cavity.

[0010] Preferably, each of the through slots is provided with a movable rubber block, which achieves a snap-fit ​​engagement with the locking block through elastic deformation.

[0011] Preferably, each of the two rubber blocks is fixedly provided with a connecting rod, and a pull ring is sleeved on the connecting rod. The pull ring is made of magnetic material.

[0012] Preferably, the rubber block is hinged to the connector via a damping hinge; the damping hinge is located on the side of the rubber block away from the connecting rod.

[0013] Preferably, the rubber block is a semi-circular rubber component that can rotate within the through groove around the damping hinge.

[0014] Preferably, the rubber block can engage and tightly abut against the annular groove.

[0015] Preferably, a sealing ring is fixedly provided on the inner wall of the connector, and the sealing ring abuts and seals with the end of the locking block. The sealing ring is made of elastic silicone material.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This invention employs a unique locking block and connector structure, utilizing the elastic engagement of the rubber block and the circular groove to achieve rapid assembly and disassembly. This solves the problem of difficult maintenance of traditional integrated pipes, significantly improving the replacement efficiency of easily damaged components such as corrugated hoses. Furthermore, the semi-circular rubber block of the damping hinge ensures a secure connection while allowing for convenient disassembly with one hand. This not only addresses the pain points of existing drainage pipes, such as difficult maintenance and poor sealing, but also offers advantages such as easy installation, long service life, and good odor prevention. It is particularly suitable for the complex environment of kitchen sinks, characterized by high temperature, high humidity, and high oil content, significantly reducing later maintenance costs and ease of use. The pull ring is made of magnetic material and can be adsorbed onto the outer wall of the metal connector, further enhancing the stability of the connecting rod and rubber block and preventing them from being affected by the pull ring's gravity, which would compromise the locking effect. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram showing the structural relationship between the card block and the connector of this utility model;

[0021] Figure 3 This is a schematic diagram showing the structural relationship between the card block and the rubber block of this utility model;

[0022] Figure 4 This is a cross-sectional structural diagram of the card block and connector of this utility model.

[0023] Drawing number explanation: 1. Connector; 2. Connecting pipe; 3. Corrugated hose; 4. Locking block; 41. Circular groove; 5. Connector; 51. Rubber block; 511. Connecting rod; 512. Pull ring; 52. Damping hinge; 53. Sealing ring. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings.

[0025] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the present invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0026] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0027] It is understood that the term "a" should be understood as "at least one" or "one or more," that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0028] Please see Figure 1-4 A drain pipe for a kitchen sink includes two connectors 1, a connecting pipe 2 fixedly disposed at the bottom of the two connectors 1, a corrugated hose 3 installed on the connecting pipe 2, and a clamp 4 and a connector 5 respectively fixedly disposed at the ends of the connecting pipe 2 and the corrugated hose 3. The clamp 4 and the connector 5 are detachably connected, and the outer wall of the connector 5 is made of metal.

[0029] The locking block 4 and the connector 5 are connected to the connecting pipe 2 and the corrugated hose 3 respectively by threads. The locking block 4 is made of rubber and has a through hole in the center for drainage. The locking block 4 has a circular groove 41 with a cross-section that is concave in the center and convex on both sides. The connector 5 has an inner cavity that mates with the locking block 4. Both sides of the inner cavity have through grooves. Each through groove has a movable rubber block 51. The rubber block 51 achieves a locking engagement with the locking block 4 through elastic deformation. A connecting rod 511 is fixedly installed on each of the two rubber blocks 51. A pull ring 512 is sleeved on the connecting rod 511. The pull ring 512 is made of magnetic material.

[0030] The rubber block 51 is hinged to the connector 5 via a damping hinge 52. The damping hinge 52 is located on the side of the rubber block 51 away from the connecting rod 511. The rubber block 51 is a semi-circular rubber part that can rotate around the damping hinge 52 in the through groove. The rubber block 51 can be engaged with the annular groove 41 and fit tightly against it. A sealing ring 53 is fixedly provided on the inner wall of the connector 5. The sealing ring 53 fits against the end of the locking block 4 and is sealed. The sealing ring 53 is made of elastic silicone.

[0031] The use of locking block 4 and connector 5 improves the efficiency of quick disassembly of the easily bent corrugated hose 3, facilitating partial and rapid replacement. This drainage pipe achieves flexible connection through the cooperation of connector 1, connecting pipe 2, and corrugated hose 3. The locking block 4 and connector 5, with their separate design, achieve quick assembly and disassembly through the elastic engagement of rubber block 51 and annular groove 41, solving the problem of difficult maintenance of traditional integrated pipes. Innovatively, a semi-circular rubber block 51 with a damping hinge 52 is set inside connector 5, operating in conjunction with pull ring 512, ensuring both installation stability and easy disassembly. A triple-seal design and rubber material are employed. The locking block 4, the elastic silicone sealing ring 53, and the rubber block 51 are tightly abutted against the circular groove 41. During use, the pull ring 512 can be manually pulled to separate the semi-circular rubber block 51 from the locking block 4. After fixing, the pull ring can be brought close to the connector 5 to magnetically fix the two, thereby fixing the pull ring 512 and enhancing the stability of the semi-circular rubber block 51 and the locking block 4. This effectively prevents leakage and backflow. This structure not only solves the problems of difficult disassembly and maintenance and insufficient sealing of existing drainage pipes, but also has the advantages of convenient installation, long service life, and good odor prevention effect. It is especially suitable for the complex use environment of kitchen sinks.

[0032] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A drainage pipe for a kitchen sink, characterized in that, It includes two connectors (1), a connecting pipe (2) fixedly disposed at the bottom of the two connectors (1), a corrugated hose (3) installed on the connecting pipe (2), and a locking block (4) and a connector (5) fixedly disposed at the ends of the connecting pipe (2) and the corrugated hose (3), respectively. The locking block (4) and the connector (5) are detachably connected, and the outer wall of the connector (5) is made of metal.

2. The drainage pipe for a kitchen sink according to claim 1, characterized in that: The locking block (4) and connector (5) are respectively connected to the connecting pipe (2) and the corrugated hose (3) by threads. The locking block (4) is made of rubber and has a through hole in the center for drainage.

3. A drainage pipe for a kitchen sink according to claim 2, characterized in that: The card block (4) has an annular groove (41) with a cross-section that is concave in the center and convex on both sides.

4. A drainage pipe for a kitchen sink according to claim 3, characterized in that: The connector (5) has an internal cavity that mates with the card block (4), and through slots are provided on both sides of the internal cavity.

5. A drainage pipe for a kitchen sink according to claim 4, characterized in that: Each of the slots is provided with a movable rubber block (51), which engages with the locking block (4) through elastic deformation.

6. A drainage pipe for a kitchen sink according to claim 5, characterized in that: A connecting rod (511) is fixedly installed on each of the two rubber blocks (51), and a pull ring (512) is sleeved on the connecting rod (511). The pull ring (512) is made of magnetic material.

7. A drainage pipe for a kitchen sink according to claim 6, characterized in that: The rubber block (51) is hinged to the connector (5) via a damping hinge (52); the damping hinge (52) is located on the side of the rubber block (51) away from the connecting rod (511).

8. A drainage pipe for a kitchen sink according to claim 7, characterized in that: The rubber block (51) is a semi-circular rubber part that can rotate around the damping hinge (52) in the through groove.

9. A drainage pipe for a kitchen sink according to claim 8, characterized in that: The rubber block (51) can engage and tightly abut against the annular groove (41).

10. A drainage pipe for a kitchen sink according to claim 9, characterized in that: A sealing ring (53) is fixedly provided on the inner wall of the connector (5). The sealing ring (53) abuts and seals with the end of the locking block (4). The sealing ring (53) is made of elastic silicone material.