Direct flushing valve and closestool

Abstract

The utility model discloses a direct flushing valve and a closestool. The washdown valve comprises a water inlet channel, a first water outlet channel, a second water outlet channel and a driving mechanism. The first water outlet channel, the second water outlet channel and the control water path can communicate with the water inlet channel. And in the process that the driving mechanism moves from a first preset position to a second preset position, the water inlet channel is communicated with the first water outlet channel and the second water outlet channel in sequence or simultaneously. According to the direct flushing valve and the closestool, different water outlet channels are switched to be opened and closed through different motion states of the driving mechanism, related electronic devices such as an electromagnetic valve are not adopted, the direct flushing valve and the closestool have the advantage of being low in cost, and due to the fact that the direct flushing valve and the closestool do not need to work excessively depending on electric energy, better reliability is achieved.

Description

Technical Field

[0001] The utility model generally relates to the technical field of bathroom equipment, and in particular to a flush valve and a toilet. Background Art

[0002] Toilets are generally provided with a brush ring water channel and a main flush water channel. The brush ring water outlet and the main flush water outlet cooperate with each other in sequence to better flush the toilet.

[0003] In the prior art, the switch between the brush ring water outlet and the main flush water outlet is generally completed by a flush valve, which is generally an electromagnetic flush valve, which relies on the main board to control the opening sequence of the electromagnetic valve to achieve the switching of the water circuit, the switching of the brush ring water circuit and the main flush water circuit. Since such a flush valve often requires multiple electromagnetic valves for control, it not only greatly increases the complexity of the structure, but also the cost of the electromagnetic valve is high, which also brings difficulties to the promotion of the product.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0005] A series of simplified concepts are introduced in the utility model content section, which will be further described in detail in the detailed implementation section. The utility model content section does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0006] A main purpose of the utility model is to overcome at least one defect of the above-mentioned prior art and provide a flush valve and a toilet.

[0007] Another main purpose of the utility model is to overcome at least one defect of the above-mentioned prior art and provide a toilet.

[0008] In order to achieve the above utility model purpose, the utility model adopts the following technical solutions:

[0009] According to one aspect of the utility model, a direct flush valve is provided, comprising a water inlet channel, a first water outlet channel, a second water outlet channel and a driving mechanism, wherein the first water outlet channel and the second water outlet channel can be connected to the water inlet channel respectively; during the movement of the driving mechanism from a first preset position to a second preset position, the water inlet channel is connected to the first water outlet channel and the second water outlet channel in sequence or simultaneously.

[0010] According to an embodiment of the present utility model, during the process of the driving mechanism moving from the second preset position to the first preset position, the water inlet channel is disconnected from the first water outlet channel and / or the second water outlet channel.

[0011] According to an embodiment of the utility model, it also includes a first valve and a second valve, and the first valve and the second valve are respectively used to cooperate with the first water outlet channel and the second water outlet channel to open and close.

[0012] According to one embodiment of the utility model, it also includes a first back pressure chamber and a first pressure relief hole, the first back pressure chamber is formed between the first valve and the valve body of the direct-flush valve, the first pressure relief hole is connected to the first back pressure chamber, and the driving mechanism can control the opening and closing of the first pressure relief hole; it also includes a second back pressure chamber and a second pressure relief hole, the second back pressure chamber is formed between the second valve and the valve body of the direct-flush valve, the second pressure relief hole is connected to the second back pressure chamber, and the driving mechanism can control the opening and closing of the second pressure relief hole.

[0013] According to one embodiment of the utility model, the driving mechanism further includes a pair of cam assemblies, and the driving mechanism is further provided with a boss, and the boss gives way to or abuts with the pair of cam assemblies respectively. The boss gives way to the pair of cam assemblies, so that the first valve and the second valve are in a closed state; the boss abuts with the pair of cam assemblies respectively, so as to drive the first valve and the second valve to open.

[0014] According to one embodiment of the utility model, the driving mechanism also includes a pair of cam assemblies, and the driving mechanism is also provided with a first boss and a second boss, and the first boss and the second boss respectively correspond to the pair of cam assemblies; the first boss and the second boss respectively give way to the pair of cam assemblies, so that the first valve and the second valve are in a closed state; the first boss and the second boss respectively abut and cooperate with the pair of cam assemblies, so as to drive the first valve and the second valve to open.

[0015] According to one embodiment of the utility model, the driving mechanism includes a driving rod, and the driving rod is provided with a first boss and two second bosses, the first boss and the second boss are arranged in parallel and staggered along the movement direction of the driving rod, and the two second bosses are arranged in a front-to-back interval along the movement direction of the driving rod.

[0016] According to one embodiment of the utility model, the cam assembly includes a cam, a connecting shaft and a pull rod, the connecting shaft is inserted into the cam, the pull rod is connected to the connecting shaft, the cam is provided with a first limiting portion, and the connecting shaft is provided with a second limiting portion and an avoidance portion; the cam can rotate in a positive direction relative to the connecting shaft, so that the first limiting portion moves along the avoidance portion; the cam can rotate in a reverse direction under the action of gravity or elastic force, so that the first limiting portion abuts against the second limiting portion.

[0017] According to one embodiment of the utility model, it also includes a control mechanism, which includes a control waterway that can be connected to the water inlet channel; the water pressure of the control waterway can drive the driving mechanism to move from the second preset position to the first preset position; the control mechanism also includes a driving elastic member, and the driving mechanism can be reset under the elastic force of the driving elastic member.

[0018] According to one embodiment of the utility model, it also includes a third valve and an operating switch, the third valve cooperates with the control water circuit opening and closing, the control mechanism is also provided with a control chamber and a pressure relief channel, the control chamber is formed between the third valve and the valve body of the direct flush valve, the pressure relief channel and the control chamber are connected, and the operating switch can control the opening and closing of the pressure relief channel.

[0019] According to one embodiment of the utility model, the driving mechanism also includes a driving cylinder, a driving plug and a driving rod, wherein the driving rod is connected to the driving plug; water pressure can drive the driving plug to move relative to the driving cylinder, drive the driving rod to move from the second preset position to the first preset position, and compress the driving elastic member; the driving elastic member can drive the driving plug to reset.

[0020] According to an embodiment of the present invention, the device further comprises a motor, and the motor can make the driving mechanism reciprocate between the first preset position and the second preset position.

[0021] According to another aspect of the utility model, a toilet comprises a toilet seat, a cover mechanism and a flush valve, the toilet seat is provided with a brush ring water outlet and a main flush outlet, the flush valve is any one of the flush valves described above, the flush valve is used to switch the water supply to the brush ring water outlet and / or the main flush outlet, the first water outlet channel is connected to one of the brush ring water outlet and the main flush outlet, and the second water outlet channel is connected to the other of the brush ring water outlet and the main flush outlet.

[0022] It can be seen from the above technical solutions that the advantages and positive effects of the flush valve and toilet of the utility model are:

[0023] The flush valve and toilet of the utility model switch the opening and closing of different water outlet channels by setting a driving mechanism, thereby realizing that the toilet brush ring water outlet and the main flush water outlet are opened in a desired sequence. This flush valve uses different motion states of the driving mechanism to switch the opening and closing of different water outlet channels, thereby realizing that the toilet brush ring water outlet and the main flush water outlet are opened in a desired sequence. Since this flush valve does not use related electronic devices such as solenoid valves, it not only has the characteristics of low cost, but also has better reliability because it does not need to rely too much on electric energy to work. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The various objects, features and advantages of the present invention will become more apparent by considering the following detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The accompanying drawings are only exemplary illustrations of the present invention and are not necessarily drawn to scale. In the accompanying drawings, the same reference numerals always represent the same or similar parts. Among them:

[0025] Figure 1 is a schematic diagram of a first cross-sectional structure of a flush valve according to an exemplary embodiment.

[0026] Figure 2 is a schematic diagram of a second cross-sectional structure of a flush valve according to an exemplary embodiment.

[0027] Figure 3 is a third cross-sectional structural schematic diagram of a flush valve according to an exemplary embodiment.

[0028] Figure 4 is a schematic structural diagram of a cam assembly according to an exemplary embodiment.

[0029] Figure 5 is a schematic diagram showing a first state of a flush valve according to an exemplary embodiment.

[0030] Figure 6 is a schematic diagram of a second state of a flush valve according to an exemplary embodiment.

[0031] Figure 7 is a schematic diagram showing a third state of a flush valve according to an exemplary embodiment.

[0032] Figure 8 is a schematic diagram of a fourth state of a flush valve according to an exemplary embodiment.

[0033] Fig. 9 It is a schematic diagram of a cross-sectional structure of a flush valve according to an exemplary embodiment.

[0034] The reference numerals are described as follows:

[0035] 100-first water outlet channel;

[0036] 200-second water outlet channel;

[0037] 300-water inlet channel;

[0038] 410-control waterway; 420-drive elastic member; 430-pressure relief channel;

[0039] 500-driving mechanism; 510-driving assembly; 520-cam assembly; 530-driving rod; 511-driving cylinder; 512-driving plug; 521-cam; 521a-first limiting portion; 522-connecting shaft; 522a-second limiting portion; 522b-avoiding portion; 523-pull rod; 531-first boss; 532-second boss;

[0040] 600-operating mechanism; 610-operating switch;

[0041] F1-first valve; F2-second valve; F3-third valve. DETAILED DESCRIPTION

[0042] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0043] The described features, structures or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present invention. However, those skilled in the art will appreciate that the technical solution of the present invention may be practiced without one or more of the specific details, or other methods, components, materials, etc. may be used. In other cases, known structures, materials or operations are not shown or described in detail to avoid blurring the various aspects of the present invention.

[0044] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0045] like Figure 1 , Figure 2 and Figure 3As shown, this embodiment provides a flush valve, which includes a water inlet channel 300, a first water outlet channel 100, a second water outlet channel 200, a control mechanism, a driving mechanism 500 and an operating mechanism 600. Among them, the control mechanism is provided with a control waterway 410, and the first water outlet channel 100, the second water outlet channel 200 and the control waterway 410 can be connected to the water inlet channel 300 respectively. The operating mechanism 600 is used to control whether the water in the water inlet channel 300 flows into the control waterway 410, and the control waterway 410 is used to provide power to the driving mechanism 500 to switch the order in which the first water outlet channel 100 and the second water outlet channel 200 are connected to the water inlet channel 300. Specifically, during the process of the driving mechanism 500 moving from the second preset position to the first preset position, the water inlet channel 300 is disconnected from the first water outlet channel 100 and / or the second water outlet channel 200. When the driving mechanism 500 moves from the first preset position to the second preset position, the water inlet channel 300 is connected with the first water outlet channel 100 and the second water outlet channel 200 in sequence or simultaneously. It should be noted that the first preset position referred to in this application refers to the state and position where the driving mechanism 500 moves to the end under the action of external force. The second preset position refers to the state and position where the driving mechanism 500 is located without the action of external force.

[0046] like Figure 2 As shown, the flush valve further includes a first valve F1, a second valve F2 and a third valve F3, which are respectively used to cooperate with the first water outlet channel 100, the second water outlet channel 200 and the control waterway 410 to open or close the first water outlet channel 100, the second water outlet channel 200 and the control waterway 410. In specific operation, the driving mechanism 500 drives to change the state of the first valve F1 and the second valve F2, and the operating mechanism 600 drives to change the state of the third valve F3.

[0047] like Figure 2As shown, in this embodiment, the direct-flush valve further includes a first back pressure chamber and a first pressure relief hole, the first back pressure chamber is formed between the first valve F1 and the valve body of the direct-flush valve, the first pressure relief hole and the first back pressure chamber are connected, and the driving mechanism 500 can control the opening and closing of the first pressure relief hole, thereby controlling the opening and closing of the first valve F1. In addition, the direct-flush valve further includes a second back pressure chamber and a second pressure relief hole, the second back pressure chamber is formed between the second valve F2 and the valve body of the direct-flush valve, the second pressure relief hole and the second back pressure chamber are connected, and the driving mechanism 500 can control the opening and closing of the second pressure relief hole, thereby controlling the opening and closing of the second valve F2. In addition, the control mechanism is also provided with a control chamber and a pressure relief channel 430, the control chamber is located behind the third valve F3, the pressure relief channel 430 and the control chamber are connected, and the operating mechanism 600 can control the opening and closing of the third valve F3 by controlling the opening and closing of the pressure relief channel 430. Specifically, the operating mechanism 600 includes an operating switch 610, a piston cylinder, a piston rod and a pressure rod. The pressure rod is hinged to the flush valve, and the pressure rod is in a state of blocking the pressure relief channel 430 without external force. The operating switch 610 is exposed to the flush valve to better operate the operating switch 610. In specific operation, the operating switch 610 is operated by pressing or other means, and the air pressure is changed to drive the piston rod to move relative to the piston cylinder, and drive the pressure rod to move so that the pressure rod opens the pressure relief channel 430, so that the water pressure of the water inlet channel 300 can flush the third valve F3, so that the water in the water inlet channel 300 can flow smoothly into the control waterway 410. When the external force acting on the operating switch 610 is cancelled, the pressure rod can be reset under the action of elastic force or gravity and re-block the pressure relief channel 430, and the third valve F3 is reset and re-closed under the action of elastic force, so that the water in the water inlet channel 300 can no longer flow into the control waterway 410. Of course, in other embodiments, the operating mechanism 600 may also adopt other structures in the prior art, and also control the opening and closing of the pressure relief channel 430 through the external operating switch 610, which will not be described in detail here.

[0048] like Figure 3As shown, in this embodiment, the control mechanism also includes a driving elastic member 420. The driving mechanism 500 includes a driving assembly 510, a driving rod 530 and a pair of cam assemblies 520. Among them, the driving rod 530 is provided with a plurality of bosses, and the driving assembly 510 can drive the driving rod 530 to move forward and backward, and through the cooperation of the plurality of bosses and the pair of cam assemblies 520, the pair of cam assemblies 520 drive the first valve F1 and / or the second valve F2 to open. Specifically, the driving assembly 510 includes a driving cylinder 511 and a driving plug 512, and the driving rod 530 is connected to the driving plug 512. When the third valve F3 is opened, the water pressure of the control waterway 410 can make the driving plug 512 move relative to the driving cylinder 511, and drive the driving rod 530 to move in the first direction, while compressing the driving elastic member 420. When the third valve F3 is closed, the force of the water pressure of the control waterway 410 acting on the driving plug 512 gradually decreases and is less than the driving elastic member 420, and the resetting of the driving elastic member 420 can make the driving plug 512 resetting in the second direction. It should be noted that the first direction and the second direction in the present application refer to the movement direction of the driving plug 512 relative to the driving cylinder 511, wherein in the first direction, the driving plug 512 is closer to the driving cylinder 511, that is, the process of moving from the second preset position to the first preset position; wherein in the second direction, the driving plug 512 is farther away from the driving cylinder 511, that is, the process of moving from the first preset position to the second preset position, and the first direction and the second direction are opposite. In this embodiment, the driving elastic member 420 is a spring. In other embodiments, the driving elastic member 420 can be other elastic members in the prior art, such as an elastic steel sheet, an elastic sleeve, etc., which will not be repeated here.

[0049] like Figure 4 As shown, in this embodiment, the cam assembly 520 includes a cam 521, a connecting shaft 522 and a pull rod 523, wherein the connecting shaft 522 is rotatably plugged into the cam 521, and the pull rod 523 is non-rotatably connected to the connecting shaft 522. The cam 521 is provided with a first limit portion 521a, and the connecting shaft 522 is provided with a second limit portion 522a and an avoidance portion 522b. When the driving rod 530 moves in the first direction, the boss can abut and drive the cam 521 to rotate in the positive direction relative to the connecting shaft 522, and at this time, the first limit portion 521a moves along the avoidance portion 522b, so the cam 521 cannot drive the connecting shaft 522 and the pull rod 523 to move, and when the boss and the cam 521 are no longer in contact, the cam 521 can rotate and reset in the opposite direction under the action of gravity or elastic force. When the driving rod 530 moves in the second direction, the boss can abut against the cam 521 again, allowing the first limiting portion 521a to abut against the second limiting portion 522a. Since the connecting shaft 522 cannot rotate relative to the pull rod 523, and the pull rod 523 cannot rotate, the boss can lift the cam 521 and the pull rod 523 at this time to achieve control of the first valve F1 or the second valve F2.

[0050] like Fig. 9 As shown, in this embodiment, a pair of cam assemblies 520 are arranged in parallel, and the driving rod 530 is provided with a first boss 531 and a second boss 532, and the first boss 531 and the second boss 532 correspond to one cam assembly 520 respectively. When the first boss 531 and the second boss 532 respectively lift the corresponding cam assembly 520, the first valve F1 and the second valve F2 can be opened respectively. It should be further explained that, in this embodiment, the first water outlet channel 100 is used to discharge the main flush water, and the second water outlet channel 200 is used to discharge the brush circle water. The driving rod 530 is provided with a first boss 531 and two second bosses 532, the first boss 531 and the second boss 532 are arranged in parallel and staggered along the movement direction of the driving rod 530, and the two second bosses 532 are arranged in front and back intervals along the movement direction of the driving rod 530. When the driving rod 530 moves in the second direction, the corresponding cam assembly 520 can be lifted in sequence according to the second boss 532, the first boss 531 and the second boss 532, so as to discharge brush circle water, main flush water and brush circle water in sequence.

[0051] Specifically, Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, in Figure 5 In this state, the driving rod 530 moves in the first direction, and at this time, the first second boss 532 just abuts against the cam 521. If the driving rod 530 continues to move in the first direction, the first second boss 532, the first boss 531 and the second second boss 532 will sequentially drive the corresponding cam 521 to rotate in the positive direction. Figure 6 In the state, the driving rod 530 moves in the first direction to the final state, and the two cams 521 have been reset under the action of gravity or elastic force. Figure 7 In this state, the driving rod 530 moves in the second direction. At this time, the first second boss 532 has lifted the cam assembly 520 to realize the first brush circle water discharge. If the driving rod 530 continues to move in the second direction, the first boss 531 and the second second boss 532 will successively lift the corresponding cam assembly 520 to realize the main flushing and the second brush circle water discharge. Figure 8 The cam assembly 520 is just in the state where the second second boss 532 is lifted.

[0052] Of course, in other embodiments, other combinations of brush ring water discharge and main flush water discharge can be achieved by setting other numbers and positions of the first boss 531 and the second boss 532, which will not be described in detail here. Alternatively, in other embodiments, the drive rod 530 can be provided with only one boss, which can give way or abut against a pair of cam assemblies 520 respectively. The boss gives way to the pair of cam assemblies 520, which can make the first valve F1 and the second valve F2 in a closed state; the boss abuts against the pair of cam assemblies 520 respectively, which can drive the first valve F1 and the second valve F2 to open.

[0053] In addition, it should be further explained that, in the present embodiment, the first valve F1, the second valve F2 and the third valve F3 are water stop plugs or water stop pads in the prior art, which will not be described in detail herein.

[0054] It should be noted that the present solution does not limit the number of water outlet channels. For example, it may also include a third water outlet channel and a fourth water outlet channel. The flush valve can be provided with corresponding valves for controlling the connection or disconnection of the water inlet channel and the water outlet channel. The specific control principle is the same as above and will not be repeated here.

[0055] It should be noted that, in other embodiments, the flush valve further includes a motor, which can directly cause the drive mechanism to reciprocate between the first preset position and the second preset position. Specifically, the motor can directly drive the drive rod to move forward and backward to open and close different water outlet channels, which will not be described in detail here.

[0056] The present embodiment also provides a toilet, which includes a toilet seat, a cover mechanism and a flush valve. The toilet seat is provided with a brush ring water outlet and a main flush outlet. The flush valve is the flush valve provided in the above-mentioned present embodiment, and the flush valve is used to switch the water supply to the brush ring water outlet and / or the main flush outlet.

[0057] The flush valve and toilet provided in this embodiment utilize different motion states of the driving mechanism to switch the opening and closing of different water outlet channels, thereby realizing that the toilet brush ring water outlet and the main flush water outlet are opened in a desired sequence. This flush valve does not use related electronic devices such as solenoid valves, and is not only low-cost, but also has better reliability because it does not need to rely too much on electrical energy to work.

[0058] It should be understood that the multiple examples described above can be used in multiple directions (such as tilted, inverted, horizontal, vertical, etc.) and in multiple configurations without departing from the principles of the present invention. The embodiments shown in the accompanying drawings are shown and described only as examples of effective applications of the principles of the present invention, and the present invention is not limited to any specific details of these embodiments.

[0059] Of course, once the above description of the representative embodiments is carefully considered, it will be readily understood by those skilled in the art that various modifications, additions, substitutions, deletions and other changes may be made to these specific embodiments, and these changes are within the scope of the principles of the present utility model. Therefore, the foregoing detailed description should be clearly understood to be given only in an illustrative and exemplary manner, and the spirit and scope of the present utility model are limited only by the appended claims and their equivalents.

Claims

1. A flush valve, characterized in that: The invention comprises a water inlet channel (300), a first water outlet channel (100), a second water outlet channel (200) and a driving mechanism (500); the first water outlet channel (100) and the second water outlet channel (200) can be respectively connected to the water inlet channel (300); when the driving mechanism (500) moves from a first preset position to a second preset position, the water inlet channel (300) is connected to the first water outlet channel (100) and the second water outlet channel (200) in sequence or simultaneously.

2. The flush valve according to claim 1, characterized in that: During the movement of the driving mechanism (500) from the second preset position to the first preset position, the water inlet channel (300) is disconnected from the first water outlet channel (100) and / or the second water outlet channel (200).

3. The flush valve according to claim 1, characterized in that: It also includes a first valve (F1) and a second valve (F2), wherein the first valve (F1) and the second valve (F2) are respectively used to cooperate with the first water outlet channel (100) and the second water outlet channel (200) for opening and closing.

4. The flush valve according to claim 3, characterized in that: It also includes a first back pressure chamber and a first pressure relief hole, wherein the first back pressure chamber is formed between a first valve (F1) and the valve body of the direct-flush valve, the first pressure relief hole is communicated with the first back pressure chamber, and the driving mechanism (500) is capable of controlling the opening and closing of the first pressure relief hole; it also includes a second back pressure chamber and a second pressure relief hole, wherein the second back pressure chamber is formed between a second valve (F2) and the valve body of the direct-flush valve, the second pressure relief hole is communicated with the second back pressure chamber, and the driving mechanism (500) is capable of controlling the opening and closing of the second pressure relief hole.

5. The flush valve according to claim 3, characterized in that: The driving mechanism (500) further comprises a pair of cam assemblies (520), and the driving mechanism (500) is further provided with a boss, wherein the boss respectively gives way to or abuts against the pair of cam assemblies (520), and the boss gives way to the pair of cam assemblies (520), so that the first valve (F1) and the second valve (F2) are in a closed state; the boss respectively abuts against the pair of cam assemblies (520), so that the first valve (F1) and the second valve (F2) can be driven to open.

6. The flush valve according to claim 3, characterized in that: The driving mechanism (500) further comprises a pair of cam assemblies (520), and the driving mechanism (500) is further provided with a first boss (531) and a second boss (532), and the first boss (531) and the second boss (532) respectively correspond to the pair of cam assemblies (520); the first boss (531) and the second boss (532) respectively give way to the pair of cam assemblies (520), so that the first valve (F1) and the second valve (F2) are in a closed state; the first boss (531) and the second boss (532) respectively abut and cooperate with the pair of cam assemblies (520), so as to drive the first valve (F1) and the second valve (F2) to open.

7. The flush valve according to claim 6, characterized in that: The driving mechanism (500) comprises a driving rod (530), wherein the driving rod (530) is provided with a first boss (531) and two second bosses (532), wherein the first boss (531) and the second boss (532) are arranged in parallel and staggered along the moving direction of the driving rod (530), and the two second bosses (532) are arranged at intervals in front and back along the moving direction of the driving rod (530).

8. The flush valve according to claim 6, characterized in that: The cam assembly (520) comprises a cam (521), a connecting shaft (522) and a pull rod (523); the connecting shaft (522) is inserted into the cam (521); the pull rod (523) is connected to the connecting shaft (522); the cam (521) is provided with a first limiting portion (521a); ​​the connecting shaft (522) is provided with a second limiting portion (522a) and an avoidance portion (522b); the cam (521) can rotate in a positive direction relative to the connecting shaft (522), so that the first limiting portion (521a) moves along the avoidance portion (522b); the cam (521) can rotate in a reverse direction under the action of gravity or elastic force, so that the first limiting portion (521a) abuts against the second limiting portion (522a).

9. The flush valve according to any one of claims 1 to 8, characterized in that: The invention also comprises a control mechanism, wherein the control mechanism comprises a control water path (410) which can be connected to the water inlet channel (300); the water pressure of the control water path (410) can drive the driving mechanism (500) to move from the second preset position to the first preset position; the control mechanism also comprises a driving elastic member (420), and the driving mechanism (500) can be reset under the elastic force of the driving elastic member (420).

10. The flush valve according to claim 9, wherein: The invention also includes a third valve (F3) and an operating switch (610), wherein the third valve (F3) cooperates with the control water circuit (410) to open and close, and the control mechanism is further provided with a control chamber and a pressure relief channel (430), wherein the control chamber is formed between the third valve (F3) and the valve body of the flush valve, and the pressure relief channel (430) is connected to the control chamber, and the operating switch (610) can control the opening and closing of the pressure relief channel (430).

11. The flush valve according to claim 9, wherein: The driving mechanism (500) further comprises a driving cylinder (511), a driving plug (512) and a driving rod (530), wherein the driving rod (530) is connected to the driving plug (512); water pressure can drive the driving plug (512) to move relative to the driving cylinder (511), drive the driving rod (530) to move from a second preset position to a first preset position, and compress the driving elastic member (420); the driving elastic member (420) can drive the driving plug (512) to reset.

12. The flush valve according to any one of claims 1 to 8, characterized in that: A motor is also included, which can enable the drive mechanism (500) to reciprocate between a first preset position and a second preset position.

13. A toilet, comprising a toilet seat, a cover mechanism and a flush valve, wherein the toilet seat is provided with a brush ring outlet and a main flush outlet, characterized in that: The direct flush valve is the direct flush valve according to any one of claims 1 to 12, and the direct flush valve is used to switch the water supply to the brush ring water outlet and / or the main flush water outlet, the first water outlet channel is connected to one of the brush ring water outlet and the main flush water outlet, and the second water outlet channel is connected to the other of the brush ring water outlet and the main flush water outlet.

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