A wash basin with a drain

Abstract

This utility model proposes a washbasin with a drain, comprising a washbasin body and a drain. The washbasin body has a vertically oriented drain channel on its bottom wall, comprising an upper section and a lower section. The drain includes a drain seat, a spring switch, and a pressure cap. The drain seat is located in the lower section of the channel. The lower end of the spring switch is connected to a bracket inside the drain seat, and the upper end of the spring switch extends into the upper section of the channel. The pressure cap is connected to the upper end of the spring switch and has a sealing ring circumferentially arranged on the pressure cap. When the pressure cap is pressed downwards, the sealing ring adheres to the inner wall of the drain outlet in the upper section of the channel, sealing the upper section. This innovative design achieves sealing by pressing the pressure cap downwards, allowing the sealing ring to directly adhere to the inner wall of the drain outlet in the upper section of the channel, avoiding the problem of gaps forming at the joint between the traditional drain assembly and the edge of the drain outlet in the upper section of the channel, which makes cleaning difficult. This design simplifies the drainage structure, and the overflow function is highly integrated with the drain channel.

Description

Technical Field

[0001] This utility model relates to the field of bathroom equipment technology, and in particular to sanitary ware such as washbasins and bathtubs. Background Technology

[0002] Traditional washbasin (or bathtub) drainage systems typically use a separate drain assembly for sealing. This assembly generally consists of a drain body made of metal or plastic, a spring-loaded core, a mounting nut, a sealing gasket, and a sealing cap. The drain body is fixed to the drain outlet at the bottom of the washbasin by threads or clips, with its upper edge forming a ring-shaped joint with the inner wall of the basin's drain outlet. When the sealing cap is pressed, the spring-loaded core drives the sealing ring to seal the drain's own inlet (i.e., the inlet of the independent cavity located below the basin's drain outlet). However, this structure has a significant drawback: 1. Hygiene dead zone problem: A narrow gap is formed at the joint between the drain body and the inner wall of the basin's drain outlet (…). Figure 14 1. **Possible Drainage Issues:** Dirt accumulates easily at point C (in the center of the basin) and is difficult to clean thoroughly. Prolonged use can lead to bacterial growth and unpleasant odors. 2. **Complex Structure:** The drain assembly needs to be manufactured separately and then assembled into the basin, increasing the number of parts and assembly costs. 3. **Leakage Risk:** The installation accuracy of the joints depends on on-site construction; aging sealant or installation errors can easily cause edge seepage. Furthermore, existing basins often achieve overflow functionality through a separate overflow pipe: an overflow outlet is created on the side wall of the basin, connected to an external plastic hose extending below the drain assembly. This design results in exposed piping, occupies space, and the hose connection is prone to loosening and leakage, making it difficult to integrate with the drainage system.

[0003] Therefore, there is a need to develop a basin drainage solution that can eliminate the gaps between the basin and the drain, simplify the drainage structure, and achieve a high degree of integration of the overflow channel. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a washbasin with a drain.

[0005] The technical solution of this utility model is achieved through the following means:

[0006] This utility model discloses a washbasin with a drainer, comprising:

[0007] The basin body has a vertically arranged drainage channel on its bottom wall, the drainage channel including an upper section and a lower section.

[0008] A drainer includes a drain seat, a spring switch, and a pressure cap. The drain seat is located in the lower section of the channel. The lower end of the spring switch is connected to a bracket inside the drain seat. The upper end of the spring switch extends into the upper section of the channel. The pressure cap is connected to the upper end of the spring switch and has a sealing ring around its circumference.

[0009] When the cap is pressed down, the sealing ring adheres to the inner wall of the drain outlet in the upper section of the channel to seal the upper section of the channel.

[0010] Preferably, an intermediate channel is formed between the upper section and the lower section of the channel, and the intermediate channel connects the upper section and the lower section of the channel.

[0011] Preferably, it further includes:

[0012] An overflow outlet is provided on the side wall of the basin body.

[0013] An overflow hole is provided on the side wall of the intermediate channel.

[0014] An overflow channel, one end of which is connected to the overflow outlet and the other end of which is connected to the overflow hole.

[0015] The overflow channel includes a connected side wall channel and a bottom wall channel, the side wall channel extending along the side wall of the basin body, and the bottom wall channel extending along the bottom wall of the basin body.

[0016] Preferably, the inner diameter of the intermediate channel is larger than the inner diameter of the upper section of the channel and larger than the inner diameter of the lower section of the channel.

[0017] Preferably, the drain outlet in the upper section of the channel has a funnel-shaped opening.

[0018] Preferably, the inner wall of the drain outlet in the upper section of the channel is provided with an annular step, and the sealing ring circumferentially provided on the cover fits against the surface of the annular step when the cover is pressed down.

[0019] Preferably, the bracket inside the drainage seat is provided with a central screw hole.

[0020] The bottom of the spring switch is provided with an external thread.

[0021] The external thread at the lower end of the spring switch forms a threaded connection with the central threaded hole on the support of the drain seat.

[0022] The upper end of the pop-up switch is provided with an external thread.

[0023] The lower end of the gland is provided with an internal threaded hole.

[0024] The external thread at the upper end of the pop-up switch and the internal threaded hole of the pressure cap form a threaded connection structure.

[0025] Preferably, the lower end of the drain seat has an annular flange extending radially outward, and the upper surface of the annular flange abuts against the end face of the bottom of the lower section of the channel.

[0026] Preferably, the drain seat has at least one rib, one end of which is connected to the bracket of the drain seat, and the other end is connected to the inner wall of the drain hole of the drain seat.

[0027] Preferably, the upper channel, middle channel, lower channel, and overflow channel of the basin body are formed integrally.

[0028] The technical advantages of this utility model of a washbasin with a drainer are as follows:

[0029] 1. Completely eliminates hard-to-clean corners in the washbasin. The sealing ring directly blocks the drain outlet at the top of the basin's own channel, eliminating the need for a traditional independent drain assembly. It also eliminates the annular gap at the junction of the basin and the drain, preventing dirt buildup and bacterial growth, and significantly improving cleaning convenience.

[0030] 2. Excellent sealing reliability: The sealing ring fits the inner wall of the upper section of the channel / annular step, and the sealing surface is moved to the smooth inner wall of the drain channel of the basin body (not the traditional multi-component splicing interface), reducing the risk of leakage. The funnel-shaped inlet + annular step design optimizes the uniformity of the sealing ring force and extends the sealing life.

[0031] 3. The structure is simplified, reducing costs. It eliminates the need for a separate drain assembly and overflow hose. The drain seat directly abuts against the lower section of the channel via an annular flange, simplifying the installation process. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is one of the cross-sectional views of the washbasin with a drainer in Embodiment 1 of this utility model;

[0034] Figure 2 Figure 1 Enlarged view of section A;

[0035] Figure 3 This is a second sectional view of the washbasin with a drainer in Embodiment 1 of this utility model;

[0036] Figure 4 yes Figure 3 Enlarged view of section B;

[0037] Figure 5 This is a cross-sectional view of the washbasin body with a drain device according to Embodiment 1 of this utility model;

[0038] Figure 6This is a schematic diagram of the drain device structure of a washbasin with a drain device according to Embodiment 1 of this utility model;

[0039] Figure 7 This is an exploded view of the drain device of the washbasin with drain device according to Embodiment 1 of this utility model;

[0040] Figure 8 This is a schematic diagram of the spring switch structure of a washbasin with a drainer in Embodiment 1 of this utility model;

[0041] Figure 9 This is a schematic diagram of the pressure cap and sealing ring structure of the washbasin with drainer in Embodiment 1 of this utility model;

[0042] Figure 10 This is a schematic diagram of the drainage seat structure of a washbasin with a drainer according to Embodiment 1 of this utility model;

[0043] Figure 11 This is a schematic diagram of the sealed state of a washbasin with a drainer according to Embodiment 1 of this utility model;

[0044] Figure 12 This is a partial sectional view of the washbasin with a drain device according to Embodiment 2 of this utility model;

[0045] Figure 13 This is a schematic diagram of the drain device structure of the washbasin with drain device according to Embodiment 3 of this utility model;

[0046] Figure 14 This is a partial cross-sectional view of the existing technology of basin drainage structure.

[0047] The attached figures are labeled as follows:

[0048] Basin body 1; drain channel 11; upper section of channel 11a; lower section of channel 11b; middle channel 11c; drain outlet 11d; annular step 11e; overflow outlet 12; overflow hole 13; overflow channel 14; side wall channel 14a; bottom wall channel 14b.

[0049] Drain 2; Drain seat 21; Bracket 211; Center screw hole 211a; Annular flange 212; Drain hole 213; Rib 214; Spring switch 22; Pressure cap 23; Internal threaded hole 231; Annular groove 232; Sealing ring 24. Detailed Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0051] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, this embodiment provides a washbasin with a drain, including a washbasin body 1 and a drain 2.

[0052] 1. Structure of the basin body 1:

[0053] A drain channel 11 is provided vertically on the bottom wall of the basin body 1. The drain channel 11 includes an upper channel section 11a, a middle channel 11c, and a lower channel section 11b arranged sequentially from top to bottom. The inner diameter of the middle channel 11c is larger than the inner diameter of the upper channel section 11a and larger than the inner diameter of the lower channel section 11b. The drain outlet 11d at the upper end of the upper channel section 11a is funnel-shaped and expands.

[0054] An overflow port 12 is provided on the side wall of the basin body 1, and an overflow hole 13 is provided on the side wall of the middle channel 11c. The overflow channel 14 is integrally formed in the basin body 1 and is arc-shaped, including a side wall channel 14a and a bottom wall channel 14b. The side wall channel 14a extends along the outer side wall of the basin body 1, and the bottom wall channel 14b extends along the bottom wall of the basin body 1, connecting the overflow port 12 and the overflow hole 13.

[0055] Manufacturing process: The basin body 1 is made of ceramic clay blank by one-time molding and sintering at high temperature (e.g., 1200℃), so that the upper section 11a of the channel, the middle channel 11c, the lower section 11b of the channel, the drain outlet 11d at the upper end of the upper section 11a of the channel, and the overflow channel 14 form a seamless integrated structure.

[0056] 2. Drainage device 2: Composition and assembly:

[0057] like Figures 6 to 10 As shown, the drainer 2 includes a drain seat 21, a spring switch 22, a pressure cap 23, and a sealing ring 24.

[0058] The drain seat 21 is injection molded from engineering plastic, but can also be made of metal. Its outer diameter is clearance-fitted with the lower section 11b of the channel. An annular flange 212 is provided at the lower end of the drain seat 21, and the upper surface of the annular flange 212 abuts against the end face of the bottom of the lower section 11b. Preferably, the drain seat 21 and the lower section 11b are bonded together with adhesive, enabling rapid assembly of the drain seat 21. Specifically, adhesive is filled between the outer surface of the drain seat 21 and the inner wall of the lower section 11b, and adhesive is also filled between the upper surface of the annular flange 212 and the end face of the bottom of the lower section 11b, so that the drain seat 21 is firmly bonded to the basin body 1. Furthermore, dense grooves are provided on the outer surface of the drain seat 21 and the upper surface of the annular flange 212. These dense grooves facilitate the filling of more adhesive, thereby achieving a more secure bond between the drain seat 21 and the basin body 1.

[0059] The drain seat 21 has a support 211 at its center, and the support 211 has a central screw hole 211a at its center. The drain seat 21 has a drain hole 213 inside, and two ribs 214 are provided inside the drain hole 213. One end of each rib 214 is connected to the outer wall of the support 211 of the drain seat 21, and the other end is connected to the inner wall of the drain hole 213 of the drain seat 21. It should be noted that three ribs 214 can also be provided inside the drain hole 213, and the three ribs 214 are distributed at a 120-degree angle.

[0060] The lower external thread 221 of the spring switch 22 is screwed into the central screw hole 211a of the bracket 211 for fixation, and the upper external thread 222 extends into the upper section 11a of the channel. The specific structure of the spring switch 22 is existing technology, so its specific structure will not be described in detail.

[0061] The pressure cap 23 is located above the drain outlet 11d of the drain channel 11 of the basin body 1. The lower end of the pressure cap 23 is provided with an internal threaded hole 231, which is connected to the external thread 222 at the upper end of the pop-up switch 22. The pressure cap 23 is provided with an annular groove 232 around its circumference. The annular groove 232 is fitted with a sealing ring 24, preferably a silicone sealing ring.

[0062] 3. Working principle:

[0063] like Figure 1 , Figure 2 and Figure 11 As shown, the upper section 11a of the channel changes from open to blocked state as follows: Press the cover 23 → the pop-up switch 22 moves down → the outer ring of the sealing ring 24 presses against the inner surface of the drain outlet 11d of the upper section 11a of the channel → the sealing ring 24 directly blocks the inlet of the upper section 11a of the channel.

[0064] like Figure 5As shown, the overflow path is as follows: the water level exceeds the overflow port 12 → the water flows through the side wall channel 14a → the bottom wall channel 14b → the overflow hole 13 → the middle channel 11c → the drain hole 213 of the drain seat 21 and is discharged downward. Example 2

[0065] like Figure 12 As shown, the main difference between the second embodiment and the first embodiment is that the inner wall of the drain outlet 11d of the upper section 11a of the channel is provided with an annular step 11e, and the sealing ring 24 is provided circumferentially on the cover 23. When the cover 23 is pressed down, the sealing ring 24 fits against the surface of the annular step 11e to block the upper section 11a of the channel. Example 3

[0066] like Figure 13 As shown, the main difference between the third embodiment and the first embodiment is that a rib 214 is provided inside the drainage seat 21. One end of the rib 214 is connected to the bracket 211 of the drainage seat 21, and the other end is connected to the inner wall of the drain hole 213 of the drainage seat 21.

[0067] The technical effects of this embodiment are as follows: drainage and anti-clogging are optimized. The inner rib of the drainage seat is designed as a single rib. The rib connects the bracket and the inner wall of the drain hole, maximizing the effective flow area of ​​the drain hole and reducing water flow resistance. The smooth surface of the rib has no hooks, so hair and debris are easily washed away, significantly reducing the risk of clogging. The single rib provides the necessary support force while avoiding the accumulation of sewage caused by multiple ribs.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A washbasin with a drainer, characterized in that, include: The basin body (1) has a drain channel (11) arranged vertically on its bottom wall, the drain channel (11) including an upper section (11a) and a lower section (11b); The drainer (2) includes a drain seat (21), a spring switch (22) and a pressure cap (23). The drain seat (21) is located in the lower section (11b) of the channel. The lower end of the spring switch (22) is connected to the bracket (211) inside the drain seat (21). The upper end of the spring switch (22) extends into the upper section (11a) of the channel. The pressure cap (23) is connected to the upper end of the spring switch (22). The pressure cap (23) is provided with a sealing ring (24) around its circumference. When the cap (23) is pressed down, the sealing ring (24) adheres to the inner wall of the drain (11d) of the upper section (11a) of the channel to block the upper section (11a).

2. The washbasin according to claim 1, characterized in that: An intermediate channel (11c) is formed between the upper section (11a) and the lower section (11b) of the channel, and the intermediate channel (11c) connects the upper section (11a) and the lower section (11b) of the channel.

3. The washbasin according to claim 2, characterized in that, Also includes: The basin body (1) is provided with an overflow port (12) on its side wall; An overflow hole (13) is provided on the side wall of the intermediate channel (11c); An overflow channel (14) is connected at one end to the overflow port (12) and at the other end to the overflow hole (13); The overflow channel (14) includes a connected side wall channel (14a) and a bottom wall channel (14b), the side wall channel (14a) extending along the side wall of the basin body (1), and the bottom wall channel (14b) extending along the bottom wall of the basin body (1).

4. The washbasin according to claim 3, characterized in that: The inner diameter of the intermediate channel (11c) is larger than the inner diameter of the upper section (11a) of the channel and larger than the inner diameter of the lower section (11b) of the channel.

5. The washbasin according to claim 4, characterized in that: The drain outlet (11d) of the upper section (11a) of the channel has a funnel-shaped opening.

6. The washbasin according to claim 5, characterized in that: The inner wall of the drain outlet (11d) of the upper section (11a) of the channel is provided with an annular step (11e), and the sealing ring (24) circumferentially provided on the cover (23) fits against the surface of the annular step (11e) when the cover (23) is pressed down.

7. The washbasin according to claim 6, characterized in that: The drain seat (21) has a central screw hole (211a) on the bracket (211). The lower end of the spring switch (22) is provided with an external thread; The external thread at the lower end of the spring switch (22) and the central screw hole (211a) on the support (211) of the drain seat (21) form a threaded connection structure; The upper end of the spring switch (22) is provided with an external thread; The lower end of the pressure cap (23) is provided with an internal threaded hole (231); The external thread at the upper end of the pop-up switch (22) and the internal thread hole (231) of the pressure cap (23) form a threaded connection structure.

8. The washbasin according to claim 7, characterized in that: The lower end of the drainage seat (21) extends radially outward and is provided with an annular flange (212), the upper surface of which abuts against the end face of the bottom of the lower section (11b) of the channel.

9. The washbasin according to claim 8, characterized in that: The drainage seat (21) is provided with at least one rib (214), one end of which is connected to the bracket (211) of the drainage seat (21), and the other end is connected to the inner wall of the drain hole (213) of the drainage seat (21).

10. The washbasin according to claim 9, characterized in that: The upper channel (11a), middle channel (11c), lower channel (11b), and overflow channel (14) of the basin body (1) are integrally formed.

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