Flushing valve for touring car closestool

Abstract

The utility model discloses a flushing valve for a touring car closestool. The flushing valve comprises a water inlet connector and a flushing valve body which are in interference fit with each other. A main channel is arranged in the flushing valve body, a movably-arranged water valve element is arranged in the main channel, the water valve element is connected with the main channel in a sealed mode, one end of the water valve element is elastically connected with the water inlet connector, and the other end of the water valve element extends to the outer side of the flushing valve body to form a touch pressing part. A side wing of the flushing valve body forms a water outlet part which is arranged in an outwards inclined mode, and a water outlet channel communicated with the main channel is arranged in the water outlet part. The flushing valve overcomes the defects of a traditional flushing valve in the aspects of sealing performance, operation convenience, durability, low-water-pressure adaptability and the like, the flushing effect and user experience are improved, the maintenance cost is reduced, and the flushing valve is very suitable for the using environment of a touring car closestool.

Description

Technical Field

[0001] This utility model relates to the field of RV toilet technology, and in particular to a flush valve for RV toilets. Background Technology

[0002] A motorhome, also known as a recreational vehicle or campervan, is a vehicle that combines transportation and living functions, suitable for travel, camping, and long-term residence. The interior of a motorhome includes beds, a kitchen, a toilet, and other living facilities. For a good user experience, each facility requires excellent design. For example, the toilet needs sufficient water flow to flush and prevent odors from escaping. Therefore, it's crucial to ensure there are no leaks during flushing. Traditional motorhome toilets often suffer from leaks due to poor valve sealing and insufficient water pressure, which obviously detracts from the user experience. Therefore, improving the flush valve structure to prevent leaks during flushing has become an increasingly urgent problem for relevant technical personnel. Utility Model Content

[0003] The purpose of this invention is to overcome the aforementioned deficiencies in the prior art and provide a flush valve for RV toilets. Through innovative designs such as interference fit, sealed connection, elastic valve core, and inclined water outlet, it solves the shortcomings of traditional flush valves in terms of sealing performance, ease of operation, durability, and adaptability to low water pressure. It not only improves flushing effect and user experience but also reduces maintenance costs, making it ideal for the use environment of RV toilets.

[0004] To achieve the above objectives, this utility model provides a flush valve for a RV toilet, comprising an inlet connector and a flush valve body that are interference fit with each other.

[0005] A main channel is provided inside the flush valve body, and a movable water valve core is provided inside the main channel. The water valve core is sealed to the main channel. One end of the water valve core is elastically connected to the water inlet connector, and the other end of the water valve core extends to the outside of the flush valve body to form a pressure contact part.

[0006] The side wings of the main body of the flush valve form an outwardly inclined water outlet, and the interior of the water outlet has a water outlet channel that communicates with the main channel.

[0007] Furthermore, the main channel includes a connecting cavity, a connecting passage, and a trigger cavity connected in sequence. One side of the connecting passage is connected to the water outlet channel. The inner diameters of the connecting cavity, connecting passage, and trigger cavity gradually decrease. The gradually decreasing inner diameters of the connecting cavity, connecting passage, and trigger cavity can accelerate the water flow speed, generate stronger water pressure, and thus improve the flushing effect.

[0008] Furthermore, the water valve core includes a connecting portion, a passing portion, and a pressing portion arranged sequentially. The connecting portion has a first inner groove, on which a first sealing element is fitted. This first sealing element abuts against the inner wall of the connecting cavity. A second inner groove is provided inside the pressing portion, on which a second sealing element is provided. This second sealing element abuts against the inner wall of the trigger cavity. The inner diameter of the passing portion is smaller than the inner diameters of the connecting portion and the pressing portion. This water valve core structure design, through the segmented layout of the connecting portion, passing portion, and pressing portion, and the double sealing design of the first and second sealing elements, significantly improves the sealing performance, flushing efficiency, and ease of operation of the flush valve.

[0009] Furthermore, the connection between the connecting cavity and the connecting passage forms a conical sealing portion. The first sealing element is provided with a sealing abutment portion that matches the shape of the sealing portion, and the sealing abutment portion and the sealing portion are press-fitted together for sealing. The conical sealing portion can better guide water flow and increase the sealing contact area, improving the sealing effect. The press-fit with the sealing abutment portion of the first sealing element ensures a tight fit between the two, preventing water leakage and enhancing the stability and reliability of the seal. Simultaneously, the conical sealing portion can optimize the water flow path, concentrating water pressure and improving the flushing effect in low water pressure environments.

[0010] Furthermore, a first convex ring is formed between the first inner groove and the through portion, the outer diameter of the first convex ring matching the inner diameter of the connecting passage, and an inclined guide portion is formed at the connection between the first convex ring and the through portion.

[0011] Furthermore, it also includes a return spring, which is a spring with an overall conical structure. The connecting part is a boss with a diameter larger than that of the through part. Two mutually perpendicular spring clips extend outward from the middle of the connecting part. The two ends of the return spring are respectively fixed to the inlet connector and the spring clips. The conical structure of the return spring can provide uniform elastic force, ensuring that the valve core can quickly and stably return to its original position after being pressed, avoiding jamming or malfunction. Moreover, the two ends of the return spring are fixed to the inlet connector and the spring clips respectively, ensuring that the spring will not shift or fall off during operation, thus improving the reliability of the return function.

[0012] Furthermore, the end of the pressure-sensitive part is an arc-shaped head. Setting the end of the pressure-sensitive part as an arc-shaped head makes the toilet switch operation smoother, preventing jamming and improving the smoothness of the interaction.

[0013] Furthermore, a filter screen is installed inside the inlet connector, and a connector cap is connected to the inlet connector. The filter screen can effectively intercept impurities, particles, and sediments in the water, preventing them from entering the flush valve and clogging the main channel, valve core, or other critical components. By filtering impurities, wear on the internal components of the flush valve is reduced, extending the service life of the flush valve. The connector cap design makes cleaning and replacing the filter screen more convenient, and users can easily disassemble the connector cap for maintenance.

[0014] Furthermore, the axis of the water outlet channel intersects the axis of the main channel at an angle of 45°. This 45° angle between the water outlet channel and the main channel guides the water flow into the toilet at the optimal angle, creating a rotating or vortex-like flow that enhances the flushing effect.

[0015] Furthermore, hooks are provided on the outer surface of the flush valve body to facilitate mounting during assembly.

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

[0017] The flush valve body of this utility model forms a main channel with a gradually decreasing inner diameter, which can accelerate the water flow speed and generate stronger water pressure, thereby improving the flushing effect. The water flow enters the connecting channel from the connecting cavity and then enters the water outlet channel to flush the toilet. The path is clear and smooth, reducing water pressure loss and ensuring that the water flow is concentrated and powerful.

[0018] The water valve core features a unique multi-layer waterproof structure, which significantly improves the sealing performance of the valve core and effectively prevents water leakage. Furthermore, the water valve core has a simple structure, making it easy to disassemble and replace the seals, thus reducing maintenance costs.

[0019] Meanwhile, the water outlet channel is at a 45° angle to the main channel, which can guide the water flow into the toilet at the optimal angle. The 45° angle design makes the water flow form a rotation or vortex when entering the toilet, which can more effectively flush the inner wall of the toilet, reduce the residue of dirt, enhance the flushing effect, and reduce the possibility of impurities accumulating and reduce the risk of blockage. Attached Figure Description

[0020] To more clearly illustrate the technology in the embodiments of this utility model 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a flush valve for a toilet in a motorhome according to this utility model.

[0022] Figure 2 yes Figure 1 A diagram illustrating the angle of explosion;

[0023] Figure 3 yes Figure 1 A schematic cross-sectional view along line AA in the middle;

[0024] Figure 4 This is a cross-sectional schematic diagram of the main body of the flush valve of this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the water valve core of this utility model;

[0026] Figure 6 This is a schematic diagram of the structure of the first sealing element of this utility model;

[0027] Figure 7 This is a schematic diagram of the closed state of this utility model;

[0028] Figure 8 This is a schematic diagram of the water flow after the invention is opened.

[0029] The diagram includes:

[0030] 1. Inlet connector; 11. Inlet chamber; 12. Auxiliary chamber; 2. Flushing valve body; 21. Main channel; 211. Connecting chamber; 212. Connecting passage; 213. Trigger chamber; 214. Sealing part; 22. Outlet part; 221. Outlet channel; 23. Hook; 3. Valve core; 31. Connecting part; 311. Spring snap-fit ​​part; 32. Passing part; 321. Space; 33. Pressing part; 331. Arc head; 34. First inner groove; 35. First convex ring; 351. Guide part; 36. Second inner groove; 4. First sealing element; 41. Sealing contact part; 5. Return spring; 6. Second sealing element; 7. Filter screen; 8. Connector cap. Detailed Implementation

[0031] The technology of this embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiment is one embodiment of the present invention, and not all embodiments thereof. Based on this embodiment 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.

[0032] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0033] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second", such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0034] Please see Figures 1 to 8 An embodiment of this utility model provides a flush valve for a RV toilet, including an inlet connector 1 and a flush valve body 2 that are interference fit with each other.

[0035] like Figure 4 As shown, a main channel 21 is provided inside the flush valve body 2. The main channel 21 includes a connecting cavity 211, a connecting passage 212, and a trigger cavity 213 connected in sequence. One side of the connecting passage 212 is connected to the water outlet channel 221. The inner diameters of the connecting cavity 211, the connecting passage 212, and the trigger cavity 213 gradually decrease, thereby forming a gradually narrowing main channel 21, which is beneficial to increasing the water pressure of the water flow.

[0036] like Figures 1 to 3 As shown, a movable water valve core 3 is installed in the main channel 21, and the water valve core 3 is sealed to the main channel 21, such as... Figure 5 As shown, the water valve core 3 includes a connecting part 31, a passing part 32, and a pressing part 33 arranged sequentially. After assembly, the connecting part 31 is placed in the connecting cavity 211. A first inner groove 34 is provided on the connecting part 31, and a first sealing member 4 is sleeved on the first inner groove 34. The first sealing member 4 abuts against the inner wall of the connecting cavity 211, specifically as follows. Figure 6 As shown, the first sealing member 4 in this embodiment has a ring structure with a conical sealing abutment part 41 formed at its end. At the same time, a conical tight fit part 214 is formed at the connection between the connecting cavity 211 and the connecting passage 212 in this embodiment. The sealing abutment part 41 matches the shape of the tight fit part 214. When the water valve core 3 moves to the right and closes, the sealing abutment part 41 and the tight fit part 214 are interference-fitted to seal and isolate the connecting cavity 211 and the connecting passage 212.

[0037] To increase the water flow's push on the valve core 3 and enhance the linkage between the valve core 3 and the inlet connector 1, the connecting part 31 of this utility model is a boss with a diameter larger than that of the through part 32. One end of the valve core 3 is elastically connected to the inlet connector 1. Specifically, the connecting part 31 and the inlet connector 1 are linked by a return spring 5. The return spring 5 is a spring with an overall conical structure. Two mutually perpendicular spring clips 311 extend outward from the middle of the connecting part 31. The two ends of the return spring 5 are respectively fixed to the inlet connector 1 and the spring clips 311. During assembly, the return spring 5 is directly clipped onto the spring clips. 311 can be used. Of course, in order to make the connection between the two more stable, screws or welding can also be used to fix them in some ways. In this embodiment, the water inlet connector 1 forms an interconnected water inlet cavity 11 and an auxiliary cavity 12. The auxiliary cavity 12 has a certain depth to accommodate the smaller diameter end of the return spring 5. Generally speaking, during assembly, the return spring 5 can be directly inserted into the auxiliary cavity 12 so that the return spring 5 can abut against the inner wall of the auxiliary cavity 12 and exert a reaction force to reset the water valve core 3. In some embodiments, the small diameter end of the return spring 5 can also be fixed in the auxiliary cavity 12 by screws or other means.

[0038] To increase the smoothness of movement and relative sealing between the water valve core 3 and the connecting passage 212, a first convex ring 35 is formed between the first inner groove 34 and the passage 32. The outer diameter of the first convex ring 35 matches the inner diameter of the connecting passage 212, and the outer diameter of the first convex ring 35 is consistent with the minimum outer diameter of the sealing contact portion 41 of the first sealing member 4. This allows the first sealing member 4 and the first convex ring 35 to fit more tightly against the inner wall of the main channel 21 when the water valve core 3 is closed, thereby achieving a better sealing effect. An inclined guide portion 351 is formed at the connection between the first convex ring 35 and the passage 32. The guide portion 351 allows the water valve core 3 to enter the connecting passage 212 better during movement, avoiding collision between the water valve core 3 and the connecting passage 212, improving the smoothness of operation and increasing the stability of the water valve core 3.

[0039] To enhance the sealing between the pressing part 33 and the trigger chamber 213 and prevent water leakage from overflowing from the trigger chamber 213, a second inner groove 36 is provided on the inner side of the pressing part 33 in this embodiment. A second sealing element 6, which can be an O-ring, is provided on the second inner groove 36. During operation, the second sealing element 6 moves with the position of the second inner groove 36 and abuts against the inner wall of the trigger chamber 213. Preferably, when the pressing part 33 is closed, it is positioned outside the flush valve body 2, and the end of the pressing part 33 is an arc head 331, which makes the toilet switch smoother when pressed and squeezed, preventing jamming and improving the smoothness of operation.

[0040] like Figure 3 and Figure 6 As shown, the inner diameter of the passage portion 32 in this embodiment is smaller than the inner diameter of the connecting portion 31 and the pressing portion 33. This arrangement allows a relatively spacious space 321 to be formed between the passage portion 32 and the connecting passage 212, so that water can enter from the gap between the first seal 4 and the sealing portion 214 to fill the space 321, and then flow out from the water outlet channel 221, thereby enhancing the flow rate of the water.

[0041] like Figures 1 to 4 As shown, the side wings of the flush valve body 2 form an outwardly inclined water outlet 22. The interior of the water outlet 22 is provided with a water outlet channel 221 that communicates with the main channel 21. The angle between the axis of the water outlet channel 221 and the axis of the main channel 21 is 45°. The water outlet channel 221 forms a 45° angle with the main channel 21, which can guide the water flow into the toilet at the optimal angle, forming a rotating water flow or vortex, thereby enhancing the flushing effect.

[0042] In some embodiments, a filter screen 7 is provided inside the inlet connector 1, and a connector cap 8 is connected to the inlet connector 1. The filter screen 7 can effectively intercept impurities, particles, and sediments in the water, preventing them from entering the flush valve and clogging the main channel 21, valve core, or other critical components. By filtering impurities, wear on the internal components of the flush valve is reduced, extending the service life of the flush valve. The design of the connector cap 8 makes cleaning and replacing the filter screen 7 more convenient, and users can easily disassemble the connector cap 8 for maintenance. In some embodiments, a hook 23 is provided on the outer surface of the flush valve body 2 for easy mounting during assembly.

[0043] Brief description of the working principle of this utility model: This utility model is installed inside the toilet of a motorhome. The inlet connector 1 is connected to the flush tank, and the outlet channel 221 is connected to the toilet's flushing pipe. Initially, under the action of the return spring 5, the valve core 3 is in the position as described above. Figure 7 In the closed state, when the user uses the toilet's touch switch, the touch switch abuts against the contact part 33, pushing the water valve core 3 inward. During the movement of the water valve core 3, as... Figure 8As shown, the sealing contact portion 41 and the sealing contact portion 214 of the first sealing member 4 will gradually separate to form a water inlet channel. The water flow will enter the relatively spacious space 321 between the passage portion 32 and the connecting passage 212 through this water inlet channel. After the outer wall of the first convex ring 35 completely enters the connecting cavity 211, the water inlet channel reaches its maximum threshold. When the relatively spacious space 321 between the passage portion 32 and the connecting passage 212 is filled, the water flow will directly enter the 45° inclined water outlet channel 221 and then be discharged to flush the toilet. During the process of entering the connecting passage 212 from the connecting cavity 211 and then entering the water outlet channel 221 from the connecting passage 212, the water pressure will gradually increase to achieve a good flushing effect. After flushing is completed, the touch switch is released, and the water valve core 3 returns to its original position under the action of the water flow and the return spring 5. Figure 1 The state.

[0044] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A flush valve for a toilet in an RV, characterized in that, It includes an inlet connector (1) with mutual interference fit and a flush valve body (2); A main channel (21) is provided inside the flush valve body (2), and a movable water valve core (3) is provided inside the main channel (21). The water valve core (3) is sealed to the main channel (21). One end of the water valve core (3) is elastically connected to the water inlet connector (1), and the other end of the water valve core (3) extends to the outside of the flush valve body (2) to form a pressing part (33). The side wings of the flush valve body (2) form an outwardly inclined water outlet (22), and the interior of the water outlet (22) is provided with a water outlet channel (221) that communicates with the main channel (21).

2. A flush valve for use in a recreational vehicle toilet according to claim 1, wherein, The main channel (21) includes a connecting cavity (211), a connecting passage (212), and a trigger cavity (213) connected in sequence. One side of the connecting passage (212) is connected to the water outlet channel (221). The inner diameters of the connecting cavity (211), the connecting passage (212), and the trigger cavity (213) gradually decrease.

3. A flush valve for use in a recreational vehicle toilet according to claim 2, wherein, The water valve core (3) includes a connecting part (31), a passing part (32), and a pressing part (33) arranged in sequence. The connecting part (31) is provided with a first inner groove (34), and a first sealing member (4) is sleeved on the first inner groove (34). The first sealing member (4) abuts against the inner wall of the connecting cavity (211). A second inner groove (36) is provided on the inner side of the pressing part (33), and a second sealing member (6) is provided on the second inner groove (36). The second sealing member (6) abuts against the inner wall of the trigger cavity (213). The inner diameter of the passing part (32) is smaller than the inner diameter of the connecting part (31) and the pressing part (33).

4. A flush valve for use in a recreational vehicle toilet according to claim 3 wherein, The connection between the connecting cavity (211) and the connecting passage (212) forms a conical sealing part (214). The first sealing member (4) is provided with a sealing abutment part (41) that matches the shape of the sealing part (214). The sealing abutment part (41) and the sealing part (214) are press-fitted together for sealing.

5. A flush valve for a RV toilet according to claim 3, characterized in that, A first convex ring (35) is formed between the first inner groove (34) and the passage (32). The outer diameter of the first convex ring (35) matches the inner diameter of the connecting passage (212). An inclined guide portion (351) is formed at the connection between the first convex ring (35) and the passage (32).

6. A flush valve for use in a recreational vehicle toilet according to claim 3 wherein, It also includes a return spring (5), which is a spring with an overall conical structure. The connecting part (31) is a boss with a diameter larger than that of the passing part (32). Two mutually perpendicular spring clips (311) extend outward from the middle of the connecting part (31). The two ends of the return spring (5) are respectively fixed to the water inlet connector (1) and the spring clips (311).

7. A flush valve for use in a recreational vehicle toilet according to claim 3 wherein, The end of the pressing part (33) is an arc head (331).

8. The flush valve for use in a recreational vehicle toilet according to claim 1, wherein The inlet connector (1) is equipped with a filter screen (7), and the inlet connector (1) is connected with a connector cap (8).

9. The flush valve for use in a recreational vehicle toilet of claim 1 wherein, The angle between the axis of the water outlet channel (221) and the axis of the main channel (21) is 45°.

10. The flush valve for use in a recreational vehicle toilet according to claim 1, wherein A hook (23) is arranged on the outer surface of the flush valve body (2).

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