A flushing device with automatic time-delay switching and a toilet
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- XIAMEN ZHUYONGCHENG PLASTIC MOLD CO LTD
- Filing Date
- 2026-04-30
- Publication Date
- 2026-06-23
Smart Images
Figure CN122257488A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of bathroom product technology, and more specifically, to an automatic delayed-switching flushing device and a toilet. Background Technology
[0002] Most existing toilet flushing devices control the water supply to the main flushing path and the brush ring path via electrically controlled valves (such as solenoid valves). However, in the event of a power outage, valve malfunction, or circuit board failure, the electrically controlled valve cannot activate the flushing device, causing inconvenience to users. Furthermore, flushing devices with electrically controlled valves are expensive. To address this, Chinese patent CN204456352U discloses a manual flushing valve that combines a main valve body and a guide valve body, equipped with a mechanical timer and a rotating shaft. Through the cooperation of a cam and piston on the rotating shaft, the main valve body and guide valve body automatically alternately open and close, achieving dual-flow flushing in a single operation—that is, sequential water flow from the brush ring path and the main flushing path. This solution uses a mechanical timer for delayed water switching control, which is structurally complex, and the time adjustment of the mechanical timer requires repeated verification, resulting in a long development cycle. In addition, the separate design of the main valve body and guide valve body leads to a large overall size of the flushing device, making it unsuitable for toilet application. Summary of the Invention
[0003] This invention discloses an automatic delay-switching flushing device, which aims to improve the problems of complex structure and large size of existing flushing devices.
[0004] The present invention adopts the following solution: An automatic delay-switching flushing device includes a valve body and a piston assembly. The valve body has an inlet channel, a regulating chamber, a first outlet channel, and a second outlet channel. The first outlet channel is connected to the inlet channel via a first pilot valve, and the second outlet channel is connected to the inlet channel via a second pilot valve. The piston assembly is installed in the regulating chamber and includes a piston seat, a first moving shaft, a second moving shaft, and an elastic element. The piston seat divides the regulating chamber into a back pressure chamber and a pressure relief chamber. The back pressure chamber is connected to the inlet channel via a main control valve, and the pressure relief chamber is connected to the back pressure chamber and is equipped with a vent. The outlet; the elastic element abuts against the piston seat so that the piston seat can move in the reset direction when the pressure in the back pressure chamber decreases; the first moving shaft is inserted into the first back pressure channel of the first pilot valve, and the second moving shaft is inserted into the second back pressure channel of the second pilot valve. The two moving shafts are axially offset and have multiple water passages so that when the piston seat drives the two moving shafts to move axially along the regulating cavity, the two back pressure channels are sequentially connected to the pressure relief chamber through each water passage to open the corresponding pilot valve, so that the two water outlet channels are sequentially connected to the water inlet channel to realize automatic delayed switching of water outlets.
[0005] As a further improvement, the main control valve is a pilot valve or a time-delay valve. When the back pressure chamber is connected to the water inlet channel, the pressure in the back pressure chamber increases, causing the piston seat to compress the elastic element and drive the two moving shafts to move in the direction of extending into the back pressure channel. When the back pressure chamber is disconnected from the water inlet channel, the pressure in the back pressure chamber decreases, and the piston seat moves in the reset direction under the elastic force of the elastic element.
[0006] As a further improvement, the outlets of both back pressure channels are equipped with seals for sealing with the outer wall of the moving shaft. The water passage is a groove provided along the outer wall of the moving shaft. When the groove is aligned with the seal, the corresponding back pressure channel is connected to the pressure relief chamber to open the pilot valve corresponding to that back pressure channel.
[0007] As a further improvement, each water passage is arranged to extend along the axial direction of the moving shaft. Two water passages are arranged at intervals on the first moving shaft, and one water passage is arranged on the second moving shaft. The water passage on the second moving shaft is positioned axially between the two water passages on the first moving shaft.
[0008] As a further improvement, the piston seat is provided with a vent hole, and the top of the pressure relief chamber is provided with a vent, which is connected to the first water outlet channel.
[0009] As a further improvement, a water outlet component is sleeved on the outer side of the water outlet channel. The water outlet component has a water outlet cavity that corresponds to the two water outlet channels one by one. Each water outlet cavity has a through hole that communicates with the outside. The first water outlet channel and the second water outlet channel are arranged parallel to each other and extend along the axial direction of the regulating cavity. The top of each water outlet channel is provided with a sealing component for sealing the water outlet channel. The sealing component is configured to abut against the corresponding through hole and seal under the action of water flow pressure, and to make the water outlet channel and the corresponding water outlet cavity connected.
[0010] As a further improvement, the valve body is integrally formed with the inlet channel and the outlet channel. The inlet channel is arranged in a direction perpendicular to the outlet channel. The first outlet channel includes a first inlet inner ring communicating with the inlet channel and a first outlet outer ring arranged along the outer periphery of the first inlet inner ring. The first pilot valve is adapted to and connected to the first inlet inner ring to control the on / off state of the first inlet inner ring and the first outlet outer ring. The second outlet channel includes a second inlet inner ring communicating with the inlet channel and a second outlet outer ring arranged along the outer periphery of the second inlet inner ring. The second pilot valve is adapted to and connected to the second inlet inner ring to control the on / off state of the second inlet inner ring and the second outlet outer ring.
[0011] As a further improvement, the sealing component includes a bracket and a sealing gasket fitted on the top of the bracket. The bracket has an outwardly extending hanging portion and a water outlet that runs through the side wall of the bracket. When the water outlet channel is separated from the water inlet channel, the bracket is placed at the outlet end of the water outlet channel under the action of gravity. When the water outlet channel is connected to the water inlet channel, the bracket moves upward under the action of water flow pressure so that the sealing gasket abuts against the through hole to seal. At this time, the water outlet is exposed in the water outlet channel and communicates with the water outlet cavity.
[0012] As a further improvement, multiple guide posts are spaced apart along the outer wall of the bracket, each guide post being an arc shape; multiple ribs are arrayed along the circumference of the outer wall of the piston seat, each rib having an arc-shaped cross-section.
[0013] Another toilet is provided, including a toilet seat and an automatic delayed-switching flushing device as described in any of the preceding claims, installed in the toilet seat. The toilet seat has a brush rim channel and a main flush channel, a first water outlet channel communicating with the brush rim channel, and a second water outlet channel communicating with the main flush channel.
[0014] By adopting the above technical solution, the present invention can achieve the following technical effects: 1. By installing a piston assembly within the regulating chamber, the synchronous movement of two moving shafts is achieved through pressure changes in the back pressure chamber. The water passages on the two moving shafts are axially offset, allowing the first and second pilot valves to open sequentially, enabling automatic delayed switching of water flow between the two outlet channels. This eliminates the need for mechanical timers or other delay structures, resulting in a simple structure. Furthermore, the discharge from the back pressure chamber, the first back pressure channel, and the second back pressure channel all converge into the pressure relief chamber, leading to a more compact structure. Simultaneously, the two moving shafts are configured within the same regulating chamber and driven axially by the same piston seat, further reducing the structural space. This results in a smaller flushing device, facilitating application on various toilets. In addition, fewer components and lower cost enhance market competitiveness.
[0015] 2. The sealing component seals against the through hole on the water outlet when water is flowing out of the outlet channel, and blocks the outlet channel when no water is flowing out. The through hole ensures air pressure within the outlet chamber and prevents siphoning.
[0016] 3. The two water outlet channels are arranged in parallel and extend along the axial direction of the regulating chamber, resulting in a neat and compact layout and small size. Each channel is integrally injection molded with the valve body, which reduces the number of parts and assembly, further reducing costs. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the structure of one embodiment of the present invention; Figure 2 , Figure 8 and Figure 9 These are cross-sectional views along different sections of one embodiment of the present invention; Figure 3 yes Figure 2 Enlarged view of A in the middle; Figure 4 This is a cross-sectional view of one embodiment of the present invention when the lower groove and the seal are aligned; Figure 5 yes Figure 4 Enlarged view of B in the middle; Figure 6 This is a cross-sectional view of one embodiment of the present invention when the groove and the seal are aligned; Figure 7 This is a cross-sectional view of the upper groove and the seal in one embodiment of the present invention. Figure 10 This is a schematic diagram of the valve body according to one embodiment of the present invention; Figure 11 and Figure 12 This is a schematic diagram of the water outlet component of one embodiment of the present invention from different perspectives; Figure 13 This is a schematic diagram of the piston seat according to one embodiment of the present invention; Figure 14 This is a schematic diagram of the structure of a sealing component according to one embodiment of the present invention; Figure 15 This is a schematic diagram of the structure of the first moving shaft according to one embodiment of the present invention; Figure 16 This is a schematic diagram of the structure of the second moving axis according to one embodiment of the present invention.
[0019] icon: 1-Valve body; 11-Inlet channel; 12-Regulating chamber; 121-Back pressure chamber; 122-Pressure relief chamber; 123-Main control valve; 124-Drain port; 13-First outlet channel; 131-First pilot valve; 132-First back pressure channel; 133-Inlet; 134-First inlet inner ring; 135-First outlet outer ring; 14-Second outlet channel; 141-Second pilot valve; 142-Second back pressure channel; 143-Second inlet inner ring; 144-Second outlet outer ring; 15-Seal; 16-Snap-fit; 2-Piston assembly; 21-Piston seat; 211-Drain hole; 212-Rib; 22-First moving shaft; 221-Upper groove; 222-Lower groove; 23-Second moving shaft; 231-Middle groove; 24-Elastic element; 3-Water outlet component; 31-Through hole; 32-First water outlet cavity; 321-First water outlet; 33-Second water outlet cavity; 331-Second water outlet; 34-Slot; 4-Blocking component; 41-Bracket; 411-Hanging part; 412-Water inlet; 413-Guide post; 42-Sealing gasket. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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 a part of the embodiments of the present invention, not all of them. 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. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to represent selected embodiments of the invention. 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.
[0021] The terms “top,” “bottom,” “upper,” “lower,” “left,” “right,” “front,” “back,” and similar expressions used in this document are for illustrative purposes only. The terms “first,” “second,” etc., are only used to distinguish different objects and should not be construed as indicating or implying relative importance or the quantity, specific order, or primary or secondary relationship of the indicated technical features. The term “several” means one or more, and “multiple” means two or more, unless otherwise explicitly specified.
[0022] Example Combination Figures 1 to 16This embodiment provides an automatic delay-switching flushing device, including a valve body 1 and a piston assembly 2. The valve body 1 has an inlet channel 11, an adjusting chamber 12, a first outlet channel 13, and a second outlet channel 14. The first outlet channel 13 is controlled to open and close with the inlet channel 11 via a first pilot valve 131, and the second outlet channel 14 is controlled to open and close with the inlet channel 11 via a second pilot valve 141. The piston assembly 2 is installed in the adjusting chamber 12 and includes a piston seat 21, a first moving shaft 22, a second moving shaft 23, and an elastic element 24. The piston seat 21 divides the adjusting chamber 12 into a back pressure chamber 121 and a pressure relief chamber 122. The back pressure chamber 121 is controlled to open and close with the inlet channel 11 via a main control valve 123, and the pressure relief chamber 122... 2 is connected to the back pressure chamber 121 and has a drain port 124; the elastic element 24 abuts against the piston seat 21 so that the piston seat 21 can move in the reset direction when the pressure in the back pressure chamber 121 decreases; the first moving shaft 22 is inserted into the first back pressure channel 132 of the first pilot valve 131, and the second moving shaft 23 is inserted into the second back pressure channel 142 of the second pilot valve 141. The two moving shafts are axially offset and have multiple water passages so that when the piston seat 21 drives the two moving shafts to move axially along the regulating chamber 12, the two back pressure channels are sequentially connected to the pressure relief chamber 122 through each water passage to open the corresponding pilot valve, so that the two water outlet channels are sequentially connected to the water inlet channel 11 to realize automatic delayed switching of water outlet channels.
[0023] For example, the main control valve 123 is a pilot valve or a time-delay valve. The main control valve 123 is opened by pneumatic or mechanical pressing. When the back pressure chamber 121 is connected to the water inlet channel 11, the pressure of the back pressure chamber 121 increases, which drives the piston seat 21 to compress the elastic element 24 and drive the two moving shafts to move in the direction of extending into the back pressure channel. When the main control valve 123 is closed, the back pressure chamber 121 is isolated from the water inlet channel 11. Since the back pressure chamber 121 is connected to the pressure relief chamber 122, the pressure of the back pressure chamber 121 will gradually decrease. At this time, the piston seat 21 moves in the reset direction under the elastic force of the elastic element 24. It is easy to understand that during the movement of the two moving shafts, the water-passing parts on the moving shafts successively connect the back pressure channel and the pressure relief chamber 122. When the back pressure channel and the pressure relief chamber 122 are connected, the corresponding pilot valve opens, so that the corresponding outlet flow channel and the inlet flow channel 11 are connected, thereby realizing the automatic switching of water output between the first outlet flow channel 13 and the second outlet flow channel 14. The delayed water output time of the two outlet flow channels can be adjusted by the spacing between the water-passing parts and the elastic force parameter setting of the elastic element 24. The elastic element 24 is preferably a spring. The structure and working principle of the diaphragm in the pilot valve are existing technologies and will not be described in detail here.
[0024] It should be noted that in this embodiment, by setting the piston assembly 2 in the regulating chamber 12, the synchronous movement of the two moving shafts is achieved by utilizing the pressure change of the back pressure chamber 121. The water passages on the two moving shafts are arranged to be axially offset, allowing the first pilot valve 131 and the second pilot valve 141 to open sequentially, achieving automatic delayed switching of water flow from the two outlet channels. No mechanical timer or other delay structures are needed, resulting in a simple structure. The discharge from the back pressure chamber 121, the first back pressure channel 132, and the second back pressure channel 142 all converge into the pressure relief chamber 122, making the structure more compact. Furthermore, the two moving shafts are configured in the same regulating chamber 12 and driven by the same piston seat 21 to move axially along the regulating chamber 12, further reducing the structural space. This makes the flushing device smaller and more suitable for application on various toilets. In addition, fewer components and lower cost enhance market competitiveness.
[0025] In a preferred embodiment, the outlets of both back pressure channels are equipped with seals 15 for sealing against the outer wall of the moving shaft. The water passage is a groove provided along the outer wall of the moving shaft. When the groove aligns with the seal 15, the corresponding back pressure channel is connected to the pressure relief chamber 122 to open the pilot valve corresponding to that back pressure channel. For example, each water passage extends axially along the moving shaft. Two water passages are provided at intervals on the first moving shaft 22, and one water passage is provided on the second moving shaft 23. The water passage on the second moving shaft 23 is positioned axially between the two water passages on the first moving shaft 22.
[0026] Specifically, the two water-passing parts of the first moving shaft 22 are, from top to bottom, an upper groove 221 and a lower groove 222, respectively, and the water-passing part on the second moving shaft 23 is a middle groove 231. (Refer to...) Figure 2 and Figure 3 Initially, the main control valve 123 is closed, and both moving shafts are sealed to the seal 15. At this time, the piston seat 21 is in its lowest position. (Refer to...) Figure 4 and Figure 5 When the main control valve 123 is opened, the water pressure in the back pressure chamber 121 increases. The piston seat 21 drives the two moving shafts to move upwards to extend into the back pressure channel. Due to the high pressure, the moving shafts quickly insert into the back pressure channel. At this time, the piston seat 21 is in its highest position, the lower groove 222 aligns with the seal 15, the first pilot valve 131 opens, and water flows out corresponding to the first outlet channel 13. (Refer to...) Figure 6 and Figure 7After the main control valve 123 is closed, the water in the back pressure chamber 121 gradually enters the pressure relief chamber 122. Under the action of the elastic element 24, the piston seat 21 drives the two moving shafts to move downwards, so that the middle groove 231 and the upper groove 221 are sequentially aligned with the sealing element 15, thereby realizing water output from the second water outlet channel 14 and the first water outlet channel 13. The presence of two water passages on the first moving shaft 22 allows the first water outlet channel 13 to output water twice during a single opening and closing of the main control valve 123. Furthermore, the first water outlet channel 13 is connected to the brush ring water channel, and the second water outlet channel 14 is connected to the main flushing water channel. During a single opening and closing of the main control valve 123, automatic delayed switching between brush ring water output, main flushing water output, and then brush ring water output (cover water replenishment) can be achieved. The structure is simple, ensuring switching stability and guaranteeing the lifespan of the flushing device. This is not a limitation and is not specifically restricted.
[0027] Based on the above embodiments, in an optional embodiment of the present invention, the piston seat 21 is provided with a drain hole 211, and the top of the pressure relief chamber 122 is provided with a drain outlet 124, which communicates with the first water outlet channel 13. The drain hole 211 is directly formed on the piston seat 21, simplifying the structure. The first water outlet channel 13 is provided with an inlet 133, which communicates with the drain outlet 124 via a flexible hose. The water flow in the pressure relief chamber 122 can be discharged into the first water outlet channel 13 through the drain outlet 124, avoiding water waste. Placing the drain outlet 124 at the top of the pressure relief chamber 122 prevents excessively rapid drainage.
[0028] In another embodiment, a water outlet component 3 is fitted onto the outer side of the water outlet channel. This component 3 has water outlet cavities corresponding to the two water outlet channels, each with a through hole 31 communicating with the outside. The first water outlet channel 13 and the second water outlet channel 14 are arranged parallel to each other and extend axially along the regulating cavity 12. Each of the two water outlet channels has a sealing component 4 at its top for sealing the water outlet channel. The sealing component 4 is configured to abut and seal against the corresponding through hole 31 under water pressure, thus allowing the water outlet channel to communicate with the corresponding water outlet cavity. That is, the sealing component 4 seals against the through hole 31 when water is flowing from the water outlet channel, and blocks the water outlet channel when no water is flowing from it. The through hole 31 ensures air pressure within the water outlet cavity, preventing siphoning.
[0029] Furthermore, the two water outlet channels are arranged in parallel and extend along the axial direction of the regulating chamber 12, with a neat and compact arrangement and small size. Further, the valve body 1 is integrally formed with an inlet channel 11 and an outlet channel. The inlet channel 11 is arranged in a direction perpendicular to the outlet channel. The first outlet channel 13 includes a first inlet inner ring 134 communicating with the inlet channel and a first outlet outer ring 135 arranged along the outer periphery of the first inlet inner ring 134. A first pilot valve 131 is adapted to and connected to the first inlet inner ring 134 to control the on / off state of the first inlet inner ring 134 and the first outlet outer ring 135. The second outlet channel 14 includes a second inlet inner ring 143 communicating with the inlet channel and a second outlet outer ring 144 arranged along the outer periphery of the second inlet inner ring 143. A second pilot valve 141 is adapted to and connected to the second inlet inner ring 143 to control the on / off state of the second inlet inner ring 143 and the second outlet outer ring 144. Each flow channel is integrally injection molded with the valve body 1, reducing parts and assembly to lower costs. The water outlet component 3 is connected to the valve body 1 via a snap-fit connection. For example, the water outlet component 3 has a first water outlet cavity 32 and a second water outlet cavity 33. The first water outlet cavity 32 is connected to the first water outlet 321, and the second water outlet cavity 33 is connected to the second water outlet 331. During installation, the first water outlet cavity 32 of the water outlet component 3 is aligned with the first water outlet flow channel 13, and the second water outlet cavity 33 is aligned with the second water outlet flow channel 14 before being inserted. Then, the slot 34 on the water outlet component 3 is engaged with the buckle 16 on the valve body 1 to fix the water outlet component 3 to the valve body 1. The snap-fit connection method makes disassembly and assembly quicker.
[0030] In a preferred embodiment, the sealing member 4 includes a bracket 41 and a sealing gasket 42 sleeved on the top of the bracket 41. The bracket 41 has an outwardly extending hanging part 411 and a water outlet 412 that passes through the side wall of the bracket 41. When the water outlet channel is separated from the water inlet channel 11, the bracket 41 is placed on the outlet end of the water outlet channel under the action of gravity. When the water outlet channel is connected to the water inlet channel 11, the bracket 41 moves upward under the action of water pressure so that the sealing gasket 42 abuts and seals with the through hole 31. At this time, the water outlet 412 is exposed in the water outlet channel and communicates with the water outlet cavity. Preferably, multiple guide posts 413 are spaced apart along the outer wall of the support 41. Each guide post 413 is arc-shaped. While ensuring the direction of movement of the support 41, it can reduce the friction between the support 41 and the inner wall of the water outlet channel, that is, reduce the resistance to the upward movement of the support 41. This ensures that the sealing part 4 can also move upward under a small water pressure, ensuring normal flushing even under low water pressure. Multiple ribs 212 are arrayed along the circumference of the outer wall of the piston seat 21. Each rib 212 has an arc-shaped cross-section. This ensures that the piston seat 21 can move axially along the regulating cavity 12 and reduces the friction between the piston seat 21 and the inner wall of the regulating cavity 12, thereby reducing the movement resistance of the piston seat 21.
[0031] The present invention also provides a toilet, including a toilet seat and an automatic delayed-switching flushing device as described in any of the above embodiments, installed in the toilet seat. The toilet seat has a brush ring water channel and a main flush water channel. A first water outlet channel 13 is connected to the brush ring water channel, and a second water outlet channel 14 is connected to the main flush water channel, so as to realize automatic delayed-switching of brush ring water and main flush water, which is convenient for users. However, this invention is not limited to this and is not specifically limited.
[0032] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions that fall within the scope of the present invention are within the scope of protection of the present invention.
Claims
1. An automatic delay-switching flushing device, characterized in that, include: The valve body has an inlet channel, a regulating chamber, a first outlet channel, and a second outlet channel. The first outlet channel is connected to the inlet channel via a first pilot valve, and the second outlet channel is connected to the inlet channel via a second pilot valve. A piston assembly, installed within the regulating chamber, includes a piston seat, a first moving shaft, a second moving shaft, and an elastic element. The piston seat divides the regulating chamber into a back pressure chamber and a pressure relief chamber. The back pressure chamber is connected to the inlet channel via a main control valve. The pressure relief chamber is connected to the back pressure chamber and has a drain port. The elastic element abuts against the piston seat, allowing the piston seat to move in the reset direction when the pressure in the back pressure chamber decreases. The first moving shaft is inserted into the first back pressure channel of the first pilot valve, and the second moving shaft is inserted into the second back pressure channel of the second pilot valve. The two moving shafts are axially offset and have multiple water passages. When the piston seat drives the two moving shafts to move axially along the regulating chamber, the two back pressure channels sequentially connect to the pressure relief chamber through each water passage, thereby opening the corresponding pilot valves. This allows the two outlet channels to sequentially connect to the inlet channel, achieving automatic delayed switching of water output between the two outlet channels.
2. The automatic delay switching flushing device according to claim 1, characterized in that, The main control valve is a pilot valve or a time-delay valve. The increased pressure in the back pressure chamber drives the piston seat to compress the elastic element, thereby driving the two moving shafts to move in the direction of extending into the back pressure channel. When the back pressure chamber is isolated from the water inlet channel, the pressure in the back pressure chamber decreases, and the piston seat moves in the reset direction under the elastic force of the elastic element.
3. The automatic delay switching flushing device according to claim 1, characterized in that, Both back pressure channels are equipped with seals at their outlets to seal against the outer wall of the moving shaft. The water passage is a groove along the outer wall of the moving shaft. When the groove is aligned with the seal, the corresponding back pressure channel is connected to the pressure relief chamber to open the pilot valve corresponding to that back pressure channel.
4. The automatic delay switching flushing device according to claim 3, characterized in that, Each water passage extends along the axial direction of the moving shaft. Two water passages are spaced apart on the first moving shaft, and one water passage is provided on the second moving shaft. The water passage on the second moving shaft is positioned axially between the two water passages on the first moving shaft.
5. The automatic delay-switching flushing device according to claim 1, characterized in that, The piston seat is provided with a vent hole, and the top of the pressure relief chamber is provided with a vent, which is connected to the first water outlet channel.
6. The automatic delay-switching flushing device according to claim 1, characterized in that, A water outlet component is fitted on the outer side of the water outlet channel. The water outlet component has a water outlet cavity that corresponds to the two water outlet channels one by one. Each water outlet cavity has a through hole that communicates with the outside. The first water outlet channel and the second water outlet channel are arranged parallel to each other and extend along the axial direction of the regulating cavity. The top of each water outlet channel is provided with a sealing component for sealing the water outlet channel. The sealing component is configured to abut against the corresponding through hole and seal under the action of water flow pressure, and to make the water outlet channel and the corresponding water outlet cavity connected.
7. The automatic delay-switching flushing device according to claim 6, characterized in that, The valve body is integrally formed with the inlet channel and the outlet channel. The inlet channel is arranged in a direction perpendicular to the outlet channel. The first outlet channel includes a first inlet inner ring communicating with the inlet channel and a first outlet outer ring arranged along the outer periphery of the first inlet inner ring. The first pilot valve is adapted to and connected to the first inlet inner ring to control the on / off state of the first inlet inner ring and the first outlet outer ring. The second outlet channel includes a second inlet inner ring communicating with the inlet channel and a second outlet outer ring arranged along the outer periphery of the second inlet inner ring. The second pilot valve is adapted to and connected to the second inlet inner ring to control the on / off state of the second inlet inner ring and the second outlet outer ring.
8. The automatic delay-switching flushing device according to claim 6, characterized in that, The sealing component includes a bracket and a sealing gasket fitted on the top of the bracket. The bracket has an outwardly extending hanging part and a water outlet that runs through the side wall of the bracket. When the water outlet channel is separated from the water inlet channel, the bracket is placed at the outlet end of the water outlet channel under the action of gravity. When the water outlet channel is connected to the water inlet channel, the bracket moves upward under the action of water flow pressure so that the sealing gasket abuts against the through hole to seal. At this time, the water outlet is exposed in the water outlet channel and communicates with the water outlet cavity.
9. The automatic delay-switching flushing device according to claim 8, characterized in that, Multiple guide posts are spaced apart along the outer wall of the bracket, and each guide post is arc-shaped; multiple ribs are arrayed along the circumference of the outer wall of the piston seat, and each rib has an arc-shaped cross-section.
10. A toilet, characterized in that, The toilet includes a toilet seat and an automatic delayed-switching flushing device as described in any one of claims 1-9, wherein the toilet seat has a brush ring channel and a main flush channel, a first water outlet channel is connected to the brush ring channel, and a second water outlet channel is connected to the main flush channel.