Intelligent toilet and its spraying system and nozzle

Abstract

The present invention provides a smart toilet and its spraying system and nozzle, the spraying system includes a commutator and a plurality of nozzles; the commutator includes a cover body, a sliding head, and an electromagnetic switch; the cover body has a first pipe that can be connected to the water inlet pipeline of the smart toilet; the sliding head can be slidably installed on the cover body and arranged close to the nozzle; the sliding head has a water outlet; the sliding head slides relative to the cover body, so that the water outlet slides to different nozzles and is connected with the nozzle; the electromagnetic switch is connected to the sliding head and is used to drive the sliding head to slide on the cover body. The sliding head arranged close to the nozzle in the commutator of the present invention can be slidably installed on the cover body, and with the sliding of the sliding head, the water outlet can be connected with different nozzles, and the water path switching can be realized at each nozzle, which not only reduces the amount of pipelines and reasonably utilizes the space, but also shortens the distance from the water inlet to the nozzle, avoids the accumulation of cold water, and improves the user experience.

Description

Technical Field

[0001] The invention relates to a flush toilet and accessories thereof, and in particular to an intelligent toilet and a spray system and a spray head thereof. Background Art

[0002] At present, the nozzle function of the smart toilet is quite complete, with nozzles for women (referred to as women's washing nozzles), defecation nozzles (referred to as defecation nozzles) and buttocks washing nozzles (referred to as fecal washing nozzles), and the switching of each nozzle is realized through the internal structure of the nozzle. The existing smart toilet nozzle switches the water circuits for women's washing, defecation, and fecal washing before entering each nozzle, and then connects to the women's washing nozzle, defecation nozzle, and fecal washing nozzle through three pipes. In such a small space of the nozzle, three pipes are densely distributed, and the distance between the pipes is small, which can easily cause the pipes to rupture, thus affecting the use of the smart toilet. Summary of the invention

[0003] One purpose of the present invention is to provide a spray washing system for an intelligent toilet, which designs a new structure for switching water inlet between nozzles, thereby solving the defect of multiple densely distributed pipes in the prior art.

[0004] Another object of the present invention is to provide a nozzle for an intelligent toilet, which, through a new water inlet switching structure, rationally utilizes space, reduces the amount of pipes used, and shortens the length of the water inlet pipes entering each nozzle.

[0005] Another object of the present invention is to provide a smart toilet with a more reasonable structure.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A spray washing system for a smart toilet is arranged on a water inlet pipe of the smart toilet. The spray washing system comprises a commutator and a plurality of nozzles; the commutator comprises:

[0008] A cover body having a first pipe that can be connected to the water inlet pipe of the smart toilet;

[0009] A sliding head is slidably mounted on the cover body and disposed close to the nozzle; the sliding head has a water outlet; the sliding head slides relative to the cover body so that the water outlet slides to different nozzles and communicates with the nozzles;

[0010] The electromagnetic switch is drivingly connected to the sliding head and is used to drive the sliding head to slide on the cover body.

[0011] Improved, the commutator further comprises:

[0012] The connecting part is fixedly connected to the sliding head and drivingly connected to the electromagnetic switch.

[0013] Preferably, the connecting portion is a rod with a magnetic portion, a front end of the rod is fixedly connected to the sliding head, and the rod can extend into the electromagnetic switch.

[0014] Further improved, the commutator also includes a fixing seat that is snapped onto the cover body, a cavity is formed between the fixing seat and the cover body, wherein the sliding head and the rod are slidably arranged in the cavity, the multiple nozzles are mounted on the fixing seat, and the fixing seat has a second pipe corresponding to each nozzle; the sliding head slides relative to the cover body to move the water outlet to a different second pipe and connect with the second pipe.

[0015] As a further improvement, the sliding head and the rod are respectively arranged at the front and rear of the cavity, the rod together with the rear of the cavity are placed in the electromagnetic switch, and a shoulder is formed at the junction of the front and rear of the cavity to limit the stroke of the sliding head.

[0016] In one embodiment, the commutator further includes an elastic member disposed in the cavity and extending and retracting as the sliding head and the rod member slide.

[0017] Preferably, the elastic member comprises a first coil spring, which is sleeved on the rod and abuts against the sliding head and the shoulder respectively.

[0018] Preferably, the elastic member further comprises a second coil spring, and the second coil spring abuts against the tail end of the rod and the inner wall of the cavity respectively.

[0019] In one embodiment, the sliding head is provided with a guide groove connected to the water outlet, the guide groove faces the first pipe and can change the amount of water flowing from the first pipe to the water outlet as the sliding head slides.

[0020] According to one aspect of the present invention, the present invention provides a spray head for a smart toilet, comprising a shell and a spray system as described in any one of the above items, wherein the multiple nozzles are installed at the front end of the shell and extend outside the shell; the commutator is placed in the shell and below each of the nozzles, and the sliding head is located between the nozzle and the cover body.

[0021] According to one aspect of the present invention, the present invention provides an intelligent toilet, comprising a water inlet pipeline and the above-mentioned nozzle, wherein a commutator in the nozzle is connected to the water inlet pipeline.

[0022] It can be seen from the above technical solution that the present invention has at least the following advantages and positive effects:

[0023] In the smart toilet and its spraying system and nozzle of the present invention, the sliding head arranged close to the nozzle in the commutator can be slidably installed on the cover body. As the sliding head slides, the water outlet can be connected with different nozzles, and the water path is switched at each nozzle, which not only reduces the use of pipelines and reasonably utilizes the space, but also shortens the distance from the water inlet to the nozzle, avoids the accumulation of cold water, and improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a cross-sectional view of a spray washing system for an intelligent toilet provided by an embodiment of the present invention;

[0025] Figure 2 is a front view of a spray cleaning system provided by an embodiment of the present invention;

[0026] Figure 3 is an axonometric diagram of a nozzle in a spray washing system provided by an embodiment of the present invention;

[0027] Figure 4 is an axonometric view of a cover body in a spray cleaning system provided by an embodiment of the present invention;

[0028] Figure 5 is an axonometric diagram of a transmission mechanism in a spray cleaning system provided in an embodiment of the present invention;

[0029] Figure 6 is a front view of a transmission mechanism in a spray cleaning system provided by an embodiment of the present invention;

[0030] Figure 7 is an axonometric view of a fixing seat in a spray cleaning system provided in an embodiment of the present invention;

[0031] Figure 8 is a bottom view of a fixing seat in a spray cleaning system provided by an embodiment of the present invention;

[0032] Fig. 9 It is a cross-sectional view of a nozzle for a smart toilet provided in an embodiment of the present invention.

[0033] The following are the descriptions of the reference numerals:

[0034] 1. Spray washing system;

[0035] 2. Water inlet pipeline;

[0036] 10. Commutator;

[0037] 10e, sixth sealing ring;

[0038] 100, sliding head; 1001, water outlet; 1002, diversion groove;

[0039] 101. Electromagnetic switch;

[0040] 102, rod; 1021, magnetic segment;

[0041] 103. a first coil spring;

[0042] 104. second coil spring;

[0043] 11. cover body; 111. first pipe; 113. second shell; 1131. second recess; 1132. shoulder;

[0044] 15, fixing seat; 151, 152, 153, second pipeline; 155, boss; 156, pipeline platform; 1561, first groove; 1562, second groove; 1563, third groove; 157, first shell; 1571, first recess; 1572, flat top; 1573, arc top;

[0045] 17. Bolts;

[0046] 20. Nozzle; 21. Women's wash nozzle; 22. Toilet wash nozzle; 23. Laxative nozzle; 24. Base;

[0047] 3. Shell. DETAILED DESCRIPTION

[0048] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially used for illustration purposes rather than for limiting the present invention.

[0049] The present application provides a spray washing system 1 for an intelligent toilet. Figure 1 and Figure 2 As shown, the spray system 1 for the smart toilet is arranged on the water inlet pipe 2 of the smart toilet.

[0050] The spray washing system 1 includes a commutator 10 and a plurality of nozzles 20 , wherein the commutator 10 includes a cover 11 , a sliding head 100 , and an electromagnetic switch 101 .

[0051] The cover body 11 has a first pipe 111, and the first pipe 111 can be connected to the water inlet pipe 2 of the smart toilet.

[0052] The sliding head 100 has a water outlet 1001 , and is disposed close to the nozzle 20 . The sliding head 100 is slidably mounted on the cover 11 .

[0053] The electromagnetic switch 101 is preferably a bidirectional electromagnetic switch. The electromagnetic switch 101 is drivingly connected to the sliding head 100. The sliding head 100 can slide on the cover body 11 under the driving of the electromagnetic switch 101.

[0054] The sliding head 100 slides relative to the cover body 11, so that the water outlet hole 1001 slides to different nozzles and communicates with the nozzles.

[0055] In the above-mentioned spray washing system 1, the sliding head 100 arranged near the nozzle 20 in the diverter 10 can be slidably installed on the cover body 11. As the sliding head 100 slides, the water outlet 1001 can be connected with different nozzles 20, and water path switching is realized at each nozzle, which not only reduces the use of pipelines and reasonably utilizes the space, but also shortens the distance from the water inlet to the nozzle, avoids the accumulation of cold water, and improves the user experience.

[0056] In one embodiment, the commutator further includes a connecting portion. The sliding head 100 is fixedly connected to the connecting portion. The electromagnetic switch 101 is drivingly connected to the sliding head 100 and the connecting portion. Under the drive of the electromagnetic switch 101, the connecting portion together with the sliding head 100 can slide on the cover body 11. The connecting portion not only supports the sliding head 100, but also guides the sliding of the sliding head 100 on the cover body 11.

[0057] like Figure 1 , 5 As shown in Figures 6 and 7, preferably, the connecting part is a rod 102 with a magnetic part. The front end of the rod 102 is fixedly connected to the sliding head 100, and the rod 102 can be inserted into the electromagnetic switch 101. The rod 102 is a round rod, and a section away from the sliding head 100 is a magnetic part, and the rod 102 is inserted into the electromagnetic switch 101. Under the action of the electromagnetic effect of the magnetic part and the electromagnetic switch 101, the electromagnetic switch 101 can drive the rod 102 to drive the sliding head 100 to slide on the cover body 11. Due to the rod 102, the magnetic part can be set on the rod 102, so that it is convenient for the electromagnetic switch 101 to drive the sliding head 100.

[0058] In another embodiment, the sliding head 100 is provided with a guide groove 1002 connected to the water outlet 1001, the guide groove 1002 faces the first pipe 111 and can change the amount of water flowing from the first pipe 111 to the water outlet 1001 as the sliding head 100 slides. The water outlet 1001 and the guide groove 1002 can mix and discharge water, thereby achieving a soft water discharge effect.

[0059] In another embodiment, the commutator 10 further includes a fixing seat 15. The cover body 11 and the fixing seat 15 are interlocked and connected by bolts 17. A cavity is formed between the fixing seat 15 and the cover body 11. The sliding head 100 and the rod 102 are slidably arranged in the cavity. A plurality of nozzles 20 are mounted on the fixing seat 15, and the fixing seat 15 has a second pipe corresponding to each nozzle 20. Under the drive of the electromagnetic switch 101, the rod 102 together with the sliding head 100 can slide on the cover body 11. The sliding head 100 slides relative to the cover body 11, so that the water outlet 1001 moves to different second pipes and communicates with the second pipes.

[0060] like Figure 3 As shown, the plurality of nozzles 20 include a female washing nozzle 21, a fecal washing nozzle 22, and a laxative nozzle 23. The three nozzles 21, 22, and 23 are integrated on a base 24, thereby saving space and optimizing the overall structure of the nozzle. The female washing nozzle 21, the fecal washing nozzle 22, and the laxative nozzle 23 are arranged in a straight line on the base 24, and there is a certain interval between them to avoid interference during the water spraying operation and affect the user's experience.

[0061] The fixing base 15 is provided with second pipes 151, 152, and 153 corresponding to the female washing nozzle 21, the fecal washing nozzle 22, and the defecation nozzle 23, respectively, and each second pipe is connected to a nozzle. For example, the second pipe 151 is connected to the female washing nozzle 21, the second pipe 152 is connected to the fecal washing nozzle 22, and the second pipe 153 is connected to the defecation nozzle 23.

[0062] like Figure 7 and Figure 8 As shown, the fixing seat 15 includes a boss 155, a pipe platform 156, and a first shell 157. The bottom of the first shell 157 is a first recess 1571, the front side of the top is a flat top 1572, and the rear side of the top is an arc-shaped top 1573. The boss 155 is arranged on the flat top 1572, and the bottom surface of the boss 155 is in contact with the top surface of the flat top 1572. The three second pipes 151, 152, and 153 extend from the part of the first recess 1571 facing the flat top 1572 to the outside of the boss 155, and extend to the outside of the boss 155 to form a pipe platform 156. The women's washing nozzle 21, the toilet washing nozzle 22, and the defecation nozzle 23 are buckled on the boss 155 and the pipe platform 156 together with the base 24.

[0063] The pipe platform 156 is provided with a first groove 1561, a second groove 1562, and a third groove 1563, wherein the second groove 1562 is connected to the second pipe 152 corresponding to the toilet nozzle 22, the first groove 1561 is connected to the second pipe 151 corresponding to the women's washing nozzle 21, and the third groove 1563 is connected to the second pipe 153 corresponding to the defecation nozzle 23. The second groove 1562 is located between the first groove 1561 and the third groove 1563, and the first groove 1561 and the third groove 1563 both extend horizontally in a direction away from the second groove 1562. Before the incoming water enters different nozzles from the second pipes 151, 152, 153 respectively, the first, second, and third grooves 1561, 1562, 1563 play a role in guiding the flow, and the opening areas of the first, second, and third grooves 1561, 1562, 1563 are larger, which is convenient for aligning the connecting nozzles, and avoids affecting the spraying effect of the nozzles due to misalignment.

[0064] The fixing seat 15 can be made of plastic and formed in one piece by injection molding.

[0065] like Figure 4 As shown, the cover body 11 includes a first pipe 111 and a second shell 113. Among them, the top of the second shell 113 is a second recess 1131. The first pipe 111 is a right-angle elbow, and the two ends are respectively a first end and a second end. The first end passes through the bottom of the cover body 11 and is connected to the front half of the second recess 1131, and the second end can be connected to the water inlet pipe 2 of the smart toilet. The cover body 11 of such a structure has a novel shape and a simple and reasonable structure. The first pipe 111 and the second shell 113 in the cover body 11 can be made of plastic and integrally formed by injection molding.

[0066] like Figure 5 and Figure 6 As shown, the sliding head 100 is a rounded rectangular block structure, the water outlet 1001 is located in the middle of the sliding head 100, and the water outlet 1001 penetrates the sliding head 100 in the thickness direction of the cavity. The guide groove 1002 is opened on the bottom surface of the sliding head 100, and the guide groove 1002 is an oblong groove extending inward from the bottom surface of the sliding head 100. The guide groove 1002 is provided in the middle of the bottom surface of the sliding head 100, the guide groove 1002 is connected to the water outlet 1001, and the guide groove 1002 extends in the horizontal direction.

[0067] The end of the rod 102 is connected to the side of the sliding head 100. A section of the rod 102 away from the sliding head 100 is a magnetic section 1021. The sliding head 100 and the rod 102 can be made of plastic, and the two are connected into one body by injection molding.

[0068] The sliding head 100 and the rod 102 are slidably disposed in the second recess 1131 of the cover body 11. The bottom surface of the sliding head 100 is in contact with the bottom of the second recess 1131.

[0069] The fixing seat 15 is buckled on the cover body 11, and the two are connected and locked by bolts 17. The bolts 17 are evenly arranged around the cover body 11 and the fixing seat 15. Preferably, the fixing seat 15 and the cover body 11 are sealed by a sixth sealing ring 10e.

[0070] After assembly, the first recess 1571 and the second recess 1131 in the cover 11 and the fixing seat 15 are arranged opposite to each other, and the first recess 1571 and the second recess 1131 together form a cavity, and the sliding head 100 together with the rod 102 can slide in the cavity.

[0071] like Figure 1 As shown, the part of the rod 102 with the magnetic section 1021 and the part of the cover 11 and the fixing seat 15 accommodating the rod 102 are inserted into the electromagnetic switch 101, and the electromagnetic switch 101 drives the rod 102 to drive the sliding head 100 to slide in the cavity, and the sliding head 100 slides in the cavity bottom of the second recess 1131. The extension direction of the guide groove 1002 is the same as the sliding direction of the sliding head 100. The sliding head 100 slides relative to the cover 11, so that the water outlet 1001 moves to the second pipe 151, 152, 153, and is connected with the corresponding second pipe. The guide groove 1002 faces the first pipe 111 and can change the amount of water flowing from the first pipe 111 to the water outlet 1001 as the sliding head 100 slides. The water outlet 1001 and the guide groove 1002 can mix and discharge water, thereby achieving a soft water outlet effect.

[0072] An embodiment, such as Figure 1 As shown, the sliding head 100 is located at the front of the cavity, the rod 102 is located at the rear of the cavity, the rod 102 and the rear of the cavity are placed in the electromagnetic switch 101, and the joint between the front and rear of the cavity forms a shoulder 1132 for limiting the stroke of the sliding head 100. In other words, the front and rear of the cavity are in the shape of a stepped hole, and the inner diameter of the front of the cavity is greater than the inner diameter of the rear of the cavity. In this way, the joint between the front and rear of the cavity forms a shoulder 1132, so that the sliding stroke of the sliding head 100 and the rod 102 can be limited, so that the water outlet 1001 and the second pipes 151, 152, 153 and the first pipe 111 can be quickly and accurately aligned, reducing the waiting time for water outlet and improving the user experience.

[0073] In another embodiment, the commutator 10 further includes an elastic member disposed in the cavity and extending and retracting as the sliding head 100 and the rod 102 slide.

[0074] like Figure 1As shown, the elastic member includes a first coil spring 103 , which is sleeved on the rod 102 and abuts against the sliding head 100 and the shoulder 1132 , respectively.

[0075] The elastic member further includes a second coil spring 104 , which abuts against the rear end of the rod 102 and the inner wall of the cavity respectively.

[0076] When the sliding head 100 and the rod 102 compress the first coil spring 103 and the second coil spring 104 as they slide, the two coil springs 103 and 104 can play a buffering role for the sliding head 100 and the rod 102. Then, when the sliding head 100 and the rod 102 move in the opposite direction under the drive of the electromagnetic switch 101, the two coil springs 103 and 104 start to reset from the compressed state, thereby providing thrust for the sliding of the sliding head 100 and the rod 102.

[0077] like Fig. 9 As shown, another embodiment of the present invention provides a spray head for a smart toilet, comprising a housing 3 and the above-mentioned spray system 1. The housing 3 is a tube structure with a closed front end and an open rear end, and the spray system 1 is installed in the housing 3. The female washing nozzle 21, the fecal washing nozzle 22, the defecation nozzle 23 and the base 24 in the spray system 1 are fixed at the front end of the housing 3, and the female washing nozzle 21, the fecal washing nozzle 22, and the defecation nozzle 23 extend outside the housing 3.

[0078] Another embodiment of the present invention provides a smart toilet, including a water inlet pipeline 2 and the above-mentioned nozzle.

[0079] After the above-mentioned spraying system 1 is assembled, the water inlet pipe 2 is connected to the second end of the first pipe 111 in the spraying system 1, and then the spraying system 1 with the water inlet pipe 2 is installed as a whole into the shell 3. Finally, the nozzle is installed into the smart toilet, and the electromagnetic switch 101 is connected to the smart toilet controller through the line.

[0080] Users can select any of the three modes: feminine washing, toilet washing, and laxative by pressing buttons on the smart toilet.

[0081] When the user selects the toilet washing mode by pressing the button on the smart toilet, the smart toilet controller sends an electrical signal to the electromagnetic switch 101. At this time, one end of the water outlet 1001 on the sliding head 100 faces the first pipe 111, and the other end of the water outlet 1001 faces the second pipe 152 on the fixing seat 15. The water in the water inlet pipeline 2 enters the guide groove 1002 from the first pipe 111, and then the water is sprayed into the second pipe 152 from the water outlet 1001, and finally sprayed out from the toilet washing nozzle 22 to clean the user.

[0082] When the user selects the feminine washing mode through the button on the smart toilet, the smart toilet controller sends an electrical signal to the electromagnetic switch 101. The electromagnetic switch 101 drives the rod 102 to drive the sliding head 100 to slide in the cavity until the end of the water outlet 1001 is directly opposite to the second pipe 151 on the fixing seat 15. At this time, the guide groove 1002 is connected with the first pipe 111, and the incoming water enters the guide groove 1002 from the first pipe 111, and then the incoming water is sprayed into the second pipe 151 from the water outlet 1001, and finally sprayed out from the feminine washing nozzle 21 to clean the user.

[0083] When the user selects the defecation mode through the button on the smart toilet, the smart toilet controller sends an electrical signal to the electromagnetic switch 101. The electromagnetic switch 101 drives the rod 102 to drive the sliding head 100 to slide in the cavity until the end of the water outlet 1001 is facing the second pipe 153 on the fixed seat 15. At this time, the guide groove 1002 is connected with the first pipe 111, and the incoming water enters the guide groove 1002 from the first pipe 111, and then the incoming water is sprayed into the second pipe 153 from the water outlet 1001, and finally sprayed out from the defecation nozzle 23 to clean the user.

[0084] In addition, the smart toilet can also set other soft water outlet modes, using the electromagnetic switch 101 to drive the sliding head 100 so that the guide groove 1002 partially blocks the water outlet of the first pipe 111, thereby reducing the water outlet to achieve the purpose of soft water outlet. The setting of various soft water outlet modes can be set by setting the moving distance of the sliding head 100 to control the size of the area of ​​the water outlet of the first pipe 111 blocked by the guide groove 1002.

[0085] The above-mentioned smart toilet and its spraying system and nozzle, the sliding head 100 arranged close to the nozzle 20 in the diverter 10 can be slidably installed on the cover body 11. As the sliding head 100 slides, the water outlet 1001 can be connected with different nozzles 20, and the water path is switched at each nozzle, which not only reduces the use of pipelines and reasonably utilizes the space, but also shortens the distance from the water inlet to the nozzle, avoids the accumulation of cold water, and improves the user experience.

[0086] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present invention can be embodied in a variety of forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A spray washing system for an intelligent toilet, arranged on the water inlet pipe of the intelligent toilet, characterized in that: It includes a commutator and a plurality of nozzles; the commutator includes: A cover body having a first pipe that can be connected to the water inlet pipe of the smart toilet; A fixing seat, wherein the fixing seat and the cover body are buckled to form a cavity, the plurality of nozzles are mounted on the fixing seat, and the fixing seat has a second pipe corresponding to each nozzle; an opening of the first pipe communicating with the cavity and the second pipe are arranged opposite to each other in the thickness direction of the cavity, and the first pipe and the plurality of nozzles are arranged opposite to each other in the thickness direction of the cavity; A sliding head is slidably installed in the cavity and arranged close to the nozzle; the sliding head has a water outlet hole penetrating the thickness direction thereof, the water outlet hole is connected to the opening and the second pipe; the sliding head slides relative to the cover body, so that the water outlet hole moves to a different second pipe and is connected to the second pipe to which it moves, so that the water outlet hole slides to a different nozzle and is connected to the nozzle to which it slides; The electromagnetic switch is drivingly connected to the sliding head and is used to drive the sliding head to slide on the cover body.

2. The spray cleaning system according to claim 1, characterized in that: The commutator also includes: The connecting part is arranged in the cavity, fixedly connected to the sliding head and drivingly connected to the electromagnetic switch.

3. The spray washing system according to claim 2, characterized in that: The connecting part is a rod with a magnetic part, the front end of the rod is fixedly connected to the sliding head, and the rod can extend into the electromagnetic switch.

4. The spray washing system according to claim 3, characterized in that: The sliding head and the rod are respectively arranged at the front and rear of the cavity, the rod together with the rear of the cavity are placed in the electromagnetic switch, and a shoulder for limiting the travel of the sliding head is formed at the junction of the front and rear of the cavity.

5. The spray washing system according to claim 4, characterized in that: The commutator also includes an elastic member which is placed in the cavity and expands and contracts as the sliding head and the rod member slide.

6. The spray washing system according to claim 5, characterized in that: The elastic member includes a first coil spring and a second coil spring. The first coil spring is sleeved on the rod and abuts against the sliding head and the shoulder respectively; the second coil spring abuts against the tail end of the rod and the inner wall of the cavity respectively.

7. The spray washing system according to claim 1, characterized in that: The sliding head is provided with a guide groove connected to the water outlet, the guide groove faces the first pipeline and can change the amount of water flowing from the first pipeline to the water outlet as the sliding head slides.

8. A nozzle for a smart toilet, characterized in that: It comprises a shell and a spray washing system as claimed in any one of claims 1 to 7, wherein the plurality of nozzles are mounted on the front end of the shell and extend outside the shell; the commutator is placed in the shell and below each of the nozzles, and the sliding head is located between the nozzle and the cover.

9. A smart toilet, characterized in that: It comprises a water inlet pipeline and the nozzle as claimed in claim 8, wherein the commutator in the nozzle is connected to the water inlet pipeline.

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