A composite drain cup for sinks

Abstract

This utility model relates to a composite drain cup for sinks, composed of an upper component and a lower component connected together. Through the separate assembly structure of the upper and lower components, users can select different specifications of the lower component or adjust the orientation of the drainage channel according to actual installation needs, thereby meeting the requirements of different installation scenarios and significantly improving the application range and versatility of the drain cup. Compared with the prior art, the composite drain cup structure of this utility model is easy to disassemble, simple to operate, and easier and faster to install. Furthermore, both the upper and lower components adopt a plastic-coated metal structure, consisting of an inner metal layer and an outer plastic layer. The outer plastic layer enhances the overall strength, reducing the thickness of the inner metal layer, effectively reducing metal usage, and improving the product's durability and aesthetics.

Description

Technical Field

[0001] This utility model relates to the field of drain accessories, specifically to a composite drain cup for a sink. Background Technology

[0002] As people's living standards improve, the convenience and practicality of kitchen facilities are receiving increasing attention, as kitchens are an important functional area in the home. The design of the sink's drain system, an indispensable piece of kitchen equipment, directly impacts the user experience and ease of installation.

[0003] Currently, most common sink drainers on the market consist of a cup and a connecting pipe. The cup is installed at the bottom of the sink, and the connecting pipe is connected to the bottom of the cup for drainage. For example, patent CN214194804U discloses a compact drainer and sink, which includes a drain section. The top of the drain section has a drain outlet that communicates with the sink, and the interior has a water collection chamber. The side wall has a drainage channel whose axis extends horizontally. This design allows the drain pipe to extend laterally to the bottom of the sink, reducing the space occupied under the sink.

[0004] Regarding the structural design of drainers, patent CN221399222U discloses an odor-proof drainer that can be installed without obstacles. It improves the position of the water outlet of the drain cup, so that when the water cup and the main body of the drainer are installed on water tanks of different thicknesses, it does not affect the drainage gap between the two, making the installation more convenient.

[0005] However, existing drain cups have some technical problems: First, the drainage channel orientation of most drain cups is fixed and cannot be changed, resulting in low versatility and difficulty in adapting to the needs of different installation environments; second, existing drain cups are made of a single material, often only metal or plastic, making it difficult to simultaneously ensure strength and corrosion resistance. These problems limit the applicability of drains in different environments and also affect the user experience.

[0006] Therefore, there is an urgent need for a composite drain cup for sinks that is simple in structure, easy to install, and has an adjustable drainage channel orientation, in order to meet the needs of different installation environments and improve the versatility and practicality of the product. Utility Model Content

[0007] The main purpose of this utility model is to provide a composite drain cup for sinks, which aims to solve the technical problems of existing drain cups having fixed drainage channel orientation, being non-replaceable, and having low versatility, thereby improving the application range.

[0008] This utility model proposes a composite drain cup body for a sink, which is composed of an upper cup assembly and a lower cup assembly connected together. The lower end of the upper cup assembly has a lower connecting port and an inner flange of the upper assembly surrounding the lower connecting port. The upper end of the lower cup assembly has an upper connecting port and an outer flange of the lower assembly surrounding the upper connecting port. A lower assembly wall extends downward from the edge of the upper connecting port, and a drainage channel is provided at the lower end of the lower assembly wall. A lower assembly thread is provided on the outer side of the lower assembly wall. The outer flange of the lower assembly presses against the inner flange of the upper assembly. The lower assembly wall extends to below the lower connecting port. A lower mounting nut is connected to the outer side of the lower assembly wall through the lower assembly thread. The lower mounting nut abuts against the lower end face of the inner flange of the upper assembly, thereby connecting and fixing the upper cup assembly and the lower cup assembly.

[0009] Preferably, the drainage channel is arranged vertically downwards or horizontally to the side.

[0010] Preferably, the upper end of the cup component is provided with an upper water inlet and an upper component outer flange provided around the edge of the upper water inlet, and an upper component enclosure wall is formed extending downward from the edge of the upper water inlet, and an upper component thread is provided on the outer side of the upper component enclosure wall.

[0011] Preferably, both the upper cup assembly and the lower cup assembly are composed of an inner metal layer and an outer plastic layer, with the outer plastic layer wrapping around the outer side of the inner metal layer.

[0012] Preferably, the drainage channel is formed by the outer plastic layer and the inner metal layer is not provided.

[0013] Preferably, a sealing ring is provided between the outer fold of the lower component and the inner fold of the upper component.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] With its separate upper and lower components, the user can select different specifications of the lower component or adjust the drainage channel orientation according to actual installation needs, thus meeting the requirements of various installation scenarios and significantly improving the application range and versatility of the drain cup. Compared with existing technologies, the composite drain cup structure for sinks of this invention is easy to disassemble, simple to operate, and quick to install. Furthermore, both the upper and lower components adopt a plastic-coated metal structure, consisting of an inner metal layer and an outer plastic layer. The outer plastic layer enhances the overall strength, reducing the thickness of the inner metal layer, effectively reducing metal usage, and improving the product's durability and aesthetics. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the combination of the drainer and the water tank in an embodiment of this utility model.

[0017] Figure 2 This is a schematic diagram of the structure of the composite drain cup for the sink in an embodiment of this utility model.

[0018] Figure 3 This is an exploded view of the composite drain cup body for a sink in an embodiment of the present invention. Figure 1 .

[0019] Figure 4 This is an exploded view of the composite drain cup body for a sink in an embodiment of the present invention. Figure 2 .

[0020] Figure 5 This is a cross-sectional view of the cup-top component of the composite drainer for sinks in an embodiment of this utility model.

[0021] Figure 6 This is a cross-sectional view of the lower component of the composite drainer cup body in an embodiment of this utility model.

[0022] Figure 7 This is a cross-sectional view of the composite drain cup for a sink in an embodiment of this utility model.

[0023] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals identify the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0026] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0027] Reference Figures 1 to 7 This utility model provides a composite drain cup for a sink, which is composed of two separate parts—an upper cup component 1 and a lower cup component 2. The upper cup component 1 and the lower cup component 2 can be disassembled from each other, thereby realizing the replaceable function of the lower cup component 2.

[0028] The upper part of the cup component 1 is provided with an upper water inlet and an upper component outer flange 12 arranged around the edge of the upper water inlet. Extending downwards from the edge of the upper water inlet, it forms an upper component enclosure 11. The upper component outer flange 12 folds outwards at the upper end of the upper component enclosure 11. An upper component thread 111 is provided on the outer side of the upper component enclosure 11. The drain cup body rests on the edge of the mounting hole of a water container such as a basin or sink via the upper component outer flange 12. The upper mounting nut 4 is locked and fixed to the outer side of the upper component enclosure 11 by engaging the internal thread within the upper mounting nut 4 with the upper component thread 111. The upper end of the upper mounting nut 4 abuts against the bottom of the water container such as a basin or sink, thereby installing the drain cup body onto the water container (e.g., basin, sink). Figure 1 (As shown).

[0029] To improve sealing, an upper sealing gasket 15 is installed on the lower end face of the outer folded edge 12 of the upper component. The upper sealing gasket 15 is placed between the edge of the mounting hole of the water container and the inner folded edge of the upper component.

[0030] The lower end of the upper component 1 is provided with a lower connecting port 13 and an upper component inner folded edge 14 arranged around the lower connecting port 13. The upper component inner folded edge 14 is folded inward to the lower end of the upper component enclosure wall 11.

[0031] The upper end of the cup lower component 2 is provided with an upper connecting port and a lower component outer folded edge 22 arranged around the upper connecting port. The lower component wall 21 is formed by extending downward from the edge of the upper connecting port. The lower component outer folded edge 22 is folded outward at the upper end of the lower component wall 21. A drainage channel 23 is connected at the lower end of the lower component wall 21.

[0032] A lower component thread 211 is provided on the outer side of the lower component enclosure 21. For example... Figure 7As shown, the outer folded edge 22 of the lower component is pressed onto the inner folded edge 14 of the upper component, and a lower sealing ring 24 is placed between the outer folded edge 22 of the lower component and the inner folded edge 14 of the upper component. The lower component enclosure wall 21 extends to the bottom of the lower connecting port 13, and a lower mounting nut 3 is connected to the outer side of the lower component enclosure wall 21 via a lower component thread 211. The upper end face of the lower mounting nut 3 is tightly pressed against the lower end face of the inner folded edge 14 of the upper component, thereby connecting and fixing the upper cup component 1 and the lower cup component 2. The connection operation of the upper cup component 1 and the lower cup component 2 is simple.

[0033] The inner cavity of the upper cup component 1 is larger than that of the lower cup component 2, large enough to allow the lower cup component 2 to be removed upwards from the upper connecting port 13. The lower cup component 2 can be easily removed from the upper connecting port 13 by removing the lower mounting nut 3.

[0034] The lower sealing ring 24 effectively prevents water leakage from the connection between the two components, improving the overall sealing performance of the drain assembly. Both the upper and lower sealing rings are made of silicone, which can accommodate minor manufacturing errors and uneven installation, ensuring a good seal even after long-term use.

[0035] The cup-bottom assembly 2 comes in various specifications, with different drainage channels facing different directions. For example, the drainage channel may be vertically downward or horizontally sideways. In this embodiment, the drainage channel faces horizontally sideways. Depending on the installation scenario, the drainage channel may be installed facing left, right, forward, backward, or downward. If the drainage channel needs to be installed facing forward, backward, left, or right, the upper cup assembly is fixed to the bottom of the water container using the upper mounting nut. For the cup-bottom assembly with the drainage channel facing horizontally sideways, the cup-bottom assembly 2 is inserted through the upper connecting port 13 of the upper cup assembly 1. The outer folded edge 22 of the lower assembly is pressed onto the inner folded edge 14 of the upper assembly. Then, the cup-bottom assembly 2 is rotated so that the drainage channel faces forward, backward, left, or right. Finally, the lower mounting nut 3 is installed to connect and fix the cup-bottom assembly 2 to the upper cup assembly 1.

[0036] If the drainage channel needs to be installed downwards, use the cup lower component with the drainage channel set horizontally downwards. Insert the cup lower component 2 through the upper connecting port 13 of the cup upper component 1. Press the outer folded edge 22 of the lower component onto the inner folded edge 14 of the upper component. Then install the lower mounting nut 3 to connect and fix the cup lower component 2 to the cup upper component 1.

[0037] The drain cup body adopts a separate assembly structure of upper cup component and lower cup component. By selecting different specifications of lower cup component or adjusting the orientation of the drainage channel of lower cup component, different installation scenario requirements can be met, making it more widely applicable.

[0038] Both the upper cup component 1 and the lower cup component 2 adopt a plastic-coated metal structure, consisting of an inner metal layer and an outer plastic layer, with the outer plastic layer wrapping around the outer surface of the inner metal layer. The outer plastic layer is directly injection molded onto the inner metal layer, enhancing the overall strength and thus allowing for a corresponding reduction in the thickness of the inner metal layer and the amount of metal used. The inner metal layer provides good mechanical strength and durability. This composite structure gives the drain cup both the robustness of metal and the oxidation resistance and decorative appeal of plastic.

[0039] like Figure 5 , 6 As shown in Figure 7, the upper cup component 1 consists of an upper inner metal layer 101 and an upper outer plastic layer 102, with the upper component thread 111 located on the outer surface of the upper outer plastic layer 102; the lower cup component 2 consists of a lower inner metal layer 201 and a lower outer plastic layer 202, with the lower component thread 211 located on the outer surface of the lower outer plastic layer 202. The drainage channel 23 is molded from the outer plastic layer 202 and does not have an inner metal layer. This design gives the drainage channel better plasticity, allowing it to be designed into various shapes as needed, while also reducing the overall weight and manufacturing costs.

[0040] For ease of installation, the upper mounting nut 4 has only one thread in the middle of its inner wall, and the lower mounting nut 3 has only one thread 31 in the middle of its threaded hole. The two ends of the thread 3 face each other and have a height difference and a spacing difference, thus forming the threaded connection inlet 31. The single thread, located in the vertical middle of the threaded hole, reduces the number of rotations of the threaded structure during installation compared to the prior art where the nut's thread is located in the vertical part of the threaded hole, making installation more convenient and faster.

[0041] The upper mounting nut 4 and the lower mounting nut 3 are both vertically and evenly provided with multiple protrusions for holding, making it convenient for the user to grip the protrusions. When it is necessary to rotate the upper mounting nut 4 or the lower mounting nut 3, it is more convenient and less strenuous to hold the protrusions.

[0042] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A composite drain cup for a sink, characterized in that, The cup assembly consists of an upper cup component and a lower cup component connected together. The lower end of the upper cup component has a lower connecting port and an inner flange of the upper component surrounding the lower connecting port. The upper end of the lower cup component has an upper connecting port and an outer flange of the lower component surrounding the upper connecting port. A lower component enclosure wall extends downward from the edge of the upper connecting port, and a drainage channel is provided at the lower end of the lower component enclosure wall. A lower component thread is provided on the outer side of the lower component enclosure wall. The outer flange of the lower component is pressed against the inner flange of the upper component. The lower component enclosure wall extends to below the lower connecting port. A lower mounting nut is connected to the outer side of the lower component enclosure wall through the lower component thread. The lower mounting nut is tightly abutted against the lower end face of the inner flange of the upper component, thereby connecting and fixing the upper cup component and the lower cup component.

2. The composite drain cup for a sink according to claim 1, characterized in that, The drainage channel is set vertically downwards or horizontally to the side.

3. The composite drain cup for a sink according to claim 2, characterized in that, The upper end of the cup component is provided with an upper water inlet and an upper component outer flange arranged around the edge of the upper water inlet. The upper component enclosure extends downward from the edge of the upper water inlet to form an upper component wall, and the upper component thread is provided on the outer side of the upper component enclosure.

4. The composite drain cup for a sink according to claim 1, 2, or 3, characterized in that, Both the upper cup assembly and the lower cup assembly are composed of an inner metal layer and an outer plastic layer, with the outer plastic layer wrapping around the outer side of the inner metal layer.

5. The composite drain cup for a sink according to claim 4, characterized in that, The drainage channel is formed by the outer plastic layer and does not have the inner metal layer.

6. The composite drain cup for a sink according to claim 4, characterized in that, A sealing ring is placed between the outer fold of the lower component and the inner fold of the upper component.

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