A hydraulic switch

Abstract

The present invention provides a hydraulic switch, comprising a switch body, a first switch assembly and a second switch assembly. The hydraulic switch provided by the present invention is a purely mechanical structure, wherein the first switch assembly includes a driving member that can be pushed and moved by water force, and when the driving member moves, the switching member can drive the switching member to open and close the first back pressure chamber at a preset number of times through the guide profile and the guide protrusion, thereby realizing that the water channel connected through the first back pressure chamber can discharge multiple sections of independent water under one water discharge control.

Description

Technical Field

[0001] The invention relates to the technical field of kitchen and bathroom, in particular to a hydraulic switch. Background Art

[0002] The hydraulic switch is a switch with a relatively ingenious structure. It can use hydraulic power to realize the function of switching and is widely used in some purely mechanical water-using products.

[0003] Flushing a toilet often requires multiple flushing stages, including flushing water and main flushing. Some electronic toilets even include a third stage of water output - replenishing water, which can replenish the water in the water storage bay after the main flushing. The switches of the above-mentioned electronic toilets are mostly electrically controlled to achieve three-stage independent water output. However, when a power outage or electronic component damage occurs, the toilet cannot be flushed, which seriously affects the use of the toilet by consumers. For this reason, the present invention provides a hydraulic switch structure that can achieve multiple stages of independent water output with a mechanical structure to avoid the problem of being unable to flush when a power outage or electronic component damage occurs. Summary of the invention

[0004] In order to solve the above technical problems, the present invention proposes a hydraulic switch structure which can realize multi-stage independent water discharge through a purely mechanical structure.

[0005] A hydraulic switch comprises a switch body, a first switch assembly and a second switch assembly, wherein: The switch body comprises a water inlet channel, a water outlet channel, a water passage channel, a first back pressure chamber, a first pressure relief chamber and a first blocking member.

[0006] The position where the first back pressure chamber is located forms a pilot valve structure, and the water circuit is connected by pressure relief, specifically: The water outlet of the water inlet channel and the water inlet of the water outlet channel are arranged close to each other and are both connected to the first back pressure chamber. The first back pressure chamber and the first pressure relief chamber are provided with a first connecting hole, and the first pressure relief chamber is also provided with a first drain hole. The first blocking member is movably installed in the first back pressure chamber, and divides the first back pressure chamber into two mutually isolated areas. One side of the first blocking member is connected to the water outlet of the water inlet channel and the water inlet of the water outlet channel, and the other side is connected to the first connecting hole, and the first blocking member is also provided with a first overflow hole connecting the two areas within the range of the water outlet of the water inlet channel. The water inlet channel and the water outlet channel are connected or blocked by the movement of the first blocking member.

[0007] One end of the water passage is connected to the first pressure relief chamber, and the other end is connected to the water inlet passage. The second switch assembly is installed on the switch body and controls the connection state of the water passage, and can control the water passage to supply water to the first pressure relief chamber.

[0008] The first switch assembly includes a driving member, a switching member and a first elastic member. The driving member is slidably mounted in the first pressure relief chamber in a piston manner, and the first pressure relief chamber is divided into a pressure relief area and a retreat area. The first connecting hole, the first drain hole and the water passage are all connected to the pressure relief area. When the water passage supplies water to the first pressure relief chamber, the driving member can be pushed to move, and the first elastic member provides a reset force for the driving member to move toward the pressure relief area.

[0009] The switching member is movably installed near the first connecting hole, and opens or blocks the first connecting hole. The driving member is provided with a driving part, and the switching member is provided with a driven part on the side of the driving member, and one of the driving part or the driven part is provided with a guide profile, and the other is provided with a guide protrusion moving along the guide profile. During the movement of the driving member, the driving part drives the driven part to swing back and forth in a direction perpendicular to the movement of the driving member through the guide profile and the guide protrusion, and the switching member forms a switching action of opening and blocking the first connecting hole through the reciprocating swing, so that the first back pressure chamber can be opened and closed a preset number of times in one movement of the driving member, and the effect of multiple independent water discharges is achieved.

[0010] The hydraulic switch provided by the present invention is a purely mechanical structure, which includes a first switch component that is provided with a driving member that can be pushed and moved by water force, and when the driving member moves, it can drive the switching member to open and close the first back pressure chamber a preset number of times through the guide profile and the guide protrusion, thereby realizing that the water channel connected through the first back pressure chamber can discharge multiple sections of independent water under one water discharge control.

[0011] Preferably, the guide profile is a groove, or the guide profile is a side wall of the driving part or the driven part. The guide profile is composed of a plurality of concave tracks and convex tracks in sequence along the moving direction of the driving member, so that when the guide profile and the guide protrusion move in a relative direction parallel to the movement of the driving member, the guide profile and the guide protrusion will also simultaneously swing relative to each other perpendicular to the moving direction of the driving member. A second elastic member is also provided in the driving member, and the second elastic member pushes the driven part to be close to the driving part, thereby improving the guiding effect of the guide profile on the guide protrusion and also improving the sealing degree of the switching member when blocking the first connecting hole.

[0012] Preferably, in order to reduce the complexity of the structure and the difficulty of forming, the guide profile is arranged on the periphery of the driving member, is tooth-shaped, and has three teeth, and the guide protrusion is arranged on the driven part, is tooth-shaped. The first elastic member and the second elastic member are both compressed springs, the first elastic member is arranged in the retreat area of ​​the first pressure relief chamber, and the second elastic member is arranged in the pressure relief area of ​​the first pressure relief chamber.

[0013] Preferably, the pressure relief zone is provided with a boss and a mounting seat at one end facing the driving member, the first communication hole is provided on the side of the boss, the switching member is swingably or slidably mounted on the mounting seat, and is provided with a cover for opening or blocking the first communication hole. The driving member is provided with an inner cavity for accommodating the boss, the mounting seat and the switching member, the driving part is provided in the inner cavity and extends along the periphery of the switching member. The periphery of the driving member is provided with an annular step, and a V-shaped sealing ring is installed at one end of the annular step facing the pressure relief chamber, so that the driving member forms a piston in the first pressure relief chamber.

[0014] Preferably, in order to reduce the overflow water discharged to the outside, the other end of the first drainage hole is connected to the water outlet channel to allow the overflow water to return to the water channel. In addition, in order to prevent the reset speed of the driving member from being too fast, the drainage speed of the first drainage hole to the first pressure relief chamber is lower than the water inflow speed of the water passage to the first pressure relief chamber, thereby controlling the delay effect of each independent water outlet.

[0015] Preferably, in order to make the second switch assembly more convenient to use, the water passage is also designed as a pilot valve structure, specifically: The water passage is divided into a water inlet section and a water outlet section, one end of the water inlet section is connected to the water inlet passage, and one end of the water outlet section is connected to the first pressure relief chamber. The switch body also includes a second back pressure chamber, a second pressure relief chamber and a second blocking member.

[0016] The water outlet of the water inlet section and the water inlet of the water outlet section are arranged close to each other and are both connected to the second back pressure chamber. The second back pressure chamber and the second pressure relief chamber are provided with a second connecting hole, and the second pressure relief chamber is also provided with a second drain hole. The second blocking member is movably installed in the second back pressure chamber, and divides the second back pressure chamber into two mutually isolated areas. One side of the second blocking member is connected to the water outlet of the water inlet section and the water outlet channel, and the other side is connected to the second connecting hole, and the second blocking member is also provided with a second overflow hole connecting the two areas within the water outlet range of the water inlet section. The water inlet section and the water outlet section are connected or blocked by the movement of the second blocking member.

[0017] The second switch assembly is installed in the second pressure relief chamber and controls the connection state of the second connecting hole, thereby controlling the opening or closing state of the second back pressure chamber, and further controlling the connection state of the water passage.

[0018] Preferably, the second switch assembly includes a pressure relief member, a third elastic member and a switch member. The pressure relief member is movably mounted in the second pressure relief chamber, and is provided with a blocking rod inserted from the second connecting hole into the second back pressure chamber, a plug is provided at the end of the blocking rod, and the plug opens the second connecting hole by further inserting the blocking rod into the second back pressure chamber, the third elastic member provides a reset force for the pressure relief member to move away from the second connecting hole, and the plug blocks the second connecting hole by the reset action of the blocking rod withdrawing from the second back pressure chamber.

[0019] One end of the switch member is arranged in the second pressure relief chamber, and pushes the blocking rod to further insert into the second back pressure chamber.

[0020] Preferably, the switch component is an air bag / hydraulic device, which is installed in the second pressure relief chamber and is located on the side of the second pressure relief component away from the second back pressure chamber. The air bag / hydraulic device is provided with a medium flow hole extending to the outside of the switch body. The air bag or hydraulic device is expanded by inputting air / liquid and pushes the pressure relief component close to the back pressure chamber.

[0021] Preferably, a receiving groove is provided at one end of the pressure relief member away from the back pressure chamber, and the driving member is a bellows-shaped air bag, one end of which is installed in the receiving groove and the other end forms a cover for the pressure relief chamber.

[0022] Preferably, the water outlet is arranged around the water inlet. The blocking member is an elastic rubber pad, the peripheral part of which is fixedly installed on the peripheral wall of the back pressure cavity by pressing, and the middle part blocks or opens the water outlet and the water inlet at the same time. A guide rod passing through the overflow hole is arranged in the back pressure cavity, and the gap between the guide rod and the overflow hole forms an overflow channel, so that the overflow hole can be enlarged, reducing the difficulty of molding, and also having a guiding function.

[0023] From the above description of the present invention, it can be seen that the present invention has the following beneficial effects: The hydraulic switch provided by the present invention is a purely mechanical structure, and the first switch assembly it includes is provided with a driving member that can be pushed and moved by water force, and when the driving member moves, it can drive the switching member to open and close the first back pressure chamber at a preset number of times through the guide profile and the guide protrusion, so that the water channel connected through the first back pressure chamber can discharge multiple sections of independent water under one water discharge control; The driving structure with guide profile and guide protrusion is ingenious, and the time of water supply or water stop can be controlled by the length design of the profile. The structure is ingenious; The first drain hole of the first pressure relief chamber is connected to the water outlet channel, so that the overflow water returns to the water channel, thereby reducing the overflow water discharged to the outside; The drainage speed of the first drainage hole to the first pressure relief chamber is made smaller than the water inflow speed of the water passage to the first pressure relief chamber, so as to control the reset speed of the driving member and further control the delay effect of each independent water discharge; The water passage is also designed as a pilot valve structure, making the second switch assembly lighter when in use; The second switch assembly uses an air bag / hydraulic device as a switch element, which has a simple structure, and the switch button for inflating or flushing it can be extended to a longer distance through a catheter, thereby realizing the remote installation of the switch button. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0025] in: Figure 1 A hydraulic switch is an axial view of Figure 1 ; Figure 2 A hydraulic switch is an axial view of Figure 2 ; Figure 3 It is an explosion of a hydraulic switch Figure 1 ; Figure 4 It is an explosion of a hydraulic switch Figure 2 ; Figure 5 It is a top view of a hydraulic switch; Figure 6 It is a front view of a hydraulic switch; Figure 7 A cross-section of a hydraulic switch Figure 1 ;(about Figure 5 AA, initial state) Figure 8 A cross-section of a hydraulic switch Figure 2 ;(about Figure 6 BB, initial state) Fig. 9 A cross-section of a hydraulic switch Figure 3 ; (First time out of water) Fig.10 A cross-section of a hydraulic switch Figure 4 ; (First water outage) Fig.11 A cross-section of a hydraulic switch Figure 5 ; (Second water discharge) Fig.12 A cross-section of a hydraulic switch Figure 6 ; (Second water outage) Fig.13 A cross-section of a hydraulic switch Figure 7 ; (Third water discharge) Fig.14 A cross-section of a hydraulic switch Figure 8 ; (The third water outage) Fig.15 is a cross-sectional view of a hydraulic switch in another embodiment Figure 1 ; (The switching part is installed by sliding) Fig.16 is a cross-sectional view of a hydraulic switch in another embodiment Figure 2 ; (The switch is installed by sliding. Fig.15 CC of Figures 1 to 16 The symbols in the figure are: switch body 1, water inlet channel 11, water outlet channel 12, water passage 13, water inlet section 131, water outlet section 132, first back pressure chamber 14, first pressure relief chamber 15, first connecting hole 151, first drain hole 152, pressure relief area 153, retreat area 154, first blocking member 16, first overflow hole 161, second back pressure chamber 17, second pressure relief chamber 18, second connecting hole 181, second drain hole 182, first Second blocking member 19, second overflow hole 191, first switch assembly 2, driving member 21, V-shaped sealing ring 211, driving part 212, switching member 22, driven part 221, first elastic member 23, second elastic member 24, second switch assembly 3, pressure relief member 31, blocking rod 311, plug 312, third elastic member 32, switch member 33, medium flow hole 331, guide profile 4, concave track 41, protruding track 42, guide protrusion 5. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] See also Figures 1 to 14 A hydraulic switch comprises a switch body 1, a first switch component 2 and a second switch component 3, wherein: The switch body 1 includes a water inlet channel 11 , a water outlet channel 12 , a water passage 13 , a first back pressure chamber 14 , a first pressure relief chamber 15 and a first blocking member 16 .

[0028] The position where the first back pressure chamber 14 is located forms a pilot valve structure, and the water circuit is connected by pressure relief, specifically: The water outlet of the water inlet channel 11 and the water inlet of the water outlet channel 12 are arranged close to each other and are both connected to the first back pressure chamber 14. The first back pressure chamber 14 and the first pressure relief chamber 15 are provided with a first connecting hole 151, and the first pressure relief chamber 15 is also provided with a first drain hole 152. The first blocking member 16 is movably installed in the first back pressure chamber 14, and divides the first back pressure chamber 14 into two mutually isolated areas. One side of the first blocking member 16 is connected to the water outlet of the water inlet channel 11 and the water inlet of the water outlet channel 12, and the other side is connected to the first connecting hole 151, and the first blocking member 16 is also provided with a first overflow hole 161 connecting the two areas within the water outlet range of the water inlet channel 11. The water inlet channel 11 and the water outlet channel 12 are connected or blocked by the movement of the first blocking member 16.

[0029] One end of the water passage 13 is connected to the first pressure relief chamber 15 , and the other end is connected to the water inlet channel 11 . The second switch assembly 3 is mounted on the switch body 1 , and controls the connection state of the water passage 13 , and can control the water passage 13 to supply water to the first pressure relief chamber 15 .

[0030] The first switch assembly 2 includes a driving member 21, a switching member 22 and a first elastic member 23. The driving member 21 and the first pressure relief chamber 15 are both cylindrical, and the driving member 21 is slidably installed in the first pressure relief chamber 15 in a piston manner. Preferably, an annular step is provided on the periphery of the driving member 21, and a V-shaped sealing ring 211 is installed at one end of the annular step facing the pressure relief chamber, so that the driving member 21 forms a piston in the first pressure relief chamber 15.

[0031] The driving member 21 divides the first pressure relief chamber 15 into a pressure relief area 153 and a retreat area 154. The first connecting hole 151, the first drainage hole 152 and the water passage 13 are all connected to the pressure relief area 153. When the water passage 13 supplies water into the first pressure relief chamber 15, the driving member 21 can be pushed to move, and the first elastic member 23 provides a reset force for the driving member 21 to move toward the pressure relief area 153.

[0032] The switching member 22 is movably installed near the first connecting hole 151, and opens or blocks the first connecting hole 151. The driving member 21 is provided with a driving part 212, and the switching member 22 is provided with a driven part 221 on the side of the driving member 21. One of the driving part 212 or the driven part 221 is provided with a guide profile 4, and the other is provided with a guide protrusion 5 moving along the guide profile 4. During the movement of the driving member 21, the driving part 212 drives the driven part 221 to swing back and forth in a direction perpendicular to the movement of the driving member 21 through the guide profile 4 and the guide protrusion 5. The switching member 22 forms a switching action of opening and blocking the first connecting hole 151 through the reciprocating swing, so that the first back pressure chamber 14 can be opened and closed for a preset number of times in one movement of the driving member 21, and the effect of multiple independent water discharges is achieved.

[0033] The guide profile 4 is a groove, or the guide profile 4 is a side wall of the driving part 212 or the driven part 221. The guide profile 4 is composed of a plurality of concave tracks 41 and convex tracks 42 in sequence along the moving direction of the driving member 21, so that when the guide profile 4 and the guide protrusion 5 move in a relative direction parallel to the movement of the driving member 21, the guide profile 4 and the guide protrusion 5 will also simultaneously swing relative to the moving direction of the driving member 21. As in the present embodiment, in order to reduce the complexity of the structure and the difficulty of molding, the guide protrusion 5 is arranged on the driven part 221 in a tooth shape, and the guide profile 4 is arranged on the periphery of the driving member 21 in a tooth groove shape and has three teeth, so that the guide protrusion 5 can have three left and right swinging actions, thereby realizing three independent water discharges. In addition, a second elastic member 24 is further provided in the driving member 21, and the second elastic member 24 pushes the driven part 221 to be close to the driving part 212, thereby improving the guiding effect of the guide profile 4 on the guide protrusion 5, and also improving the sealing degree of the switching member 22 when blocking the first connecting hole 151. Preferably, the first elastic member 23 and the second elastic member 24 are both compressed springs, the first elastic member 23 is arranged in the retreat area 154 of the first pressure relief chamber 15, and the second elastic member 24 is arranged in the pressure relief area 153 of the first pressure relief chamber 15.

[0034] Regarding the specific structure of the driving member 21 and the switching member 22, in one embodiment, the pressure relief zone 153 is provided with a boss and a mounting seat at one end facing the driving member 21, the first connecting hole 151 is provided on the side of the boss, and the switching member 22 is swingably mounted on the mounting seat (in another embodiment, a sliding installation is adopted, such as Fig.15 and Fig.16 ), and a cover is provided to open or block the first communication hole 151. The driving member 21 is provided with an inner cavity for accommodating the boss, the mounting seat and the switching member 22, and the driving part 212 is arranged in the inner cavity and extends along the periphery of the switching member 22.

[0035] In one embodiment, in order to reduce the overflow water discharged to the outside, the other end of the first drainage hole 152 is connected to the water outlet channel 12 to allow the overflow water to return to the water channel. In addition, in order to prevent the reset speed of the driving member 21 from being too fast, the drainage speed of the first drainage hole 152 to the first pressure relief chamber 15 is lower than the water inlet speed of the water passage 13 to the first pressure relief chamber 15, thereby controlling the delay effect of each independent water outlet.

[0036] On the basis of the above embodiments, in order to make the second switch assembly 3 more convenient to use, in one embodiment, the water passage 13 is also designed as a pilot valve structure, specifically: The water passage 13 is divided into a water inlet section 131 and a water outlet section 132. One end of the water inlet section 131 is connected to the water inlet channel 11, and one end of the water outlet section 132 is connected to the first pressure relief chamber 15. The switch body 1 also includes a second back pressure chamber 17, a second pressure relief chamber 18, and a second blocking member 19. The water outlet of the water inlet section 131 and the water inlet of the water outlet section 132 are arranged close to each other and are both connected to the second back pressure chamber 17. The second back pressure chamber 17 and the second pressure relief chamber 18 are provided with a second connecting hole 181, and the second pressure relief chamber 18 is also provided with a second drainage hole 182. The second blocking member 19 is movably installed in the second back pressure chamber 17, and divides the second back pressure chamber 17 into two mutually isolated areas. The second blocking member 19 is connected to the water outlet of the water inlet section 131 and the section of the water outlet channel 12 on one side, and is connected to the second connecting hole 181 on the other side. The second blocking member 19 is also provided with a second overflow hole 191 connecting the two areas within the water outlet range of the water inlet section 131. The water inlet section 131 and the water outlet section 132 are connected or blocked by the movement of the second blocking member 19. The second switch assembly 3 is installed in the second pressure relief chamber 18, and controls the connecting state of the second connecting hole 181, so as to control the opening or closing state of the second back pressure chamber 17, and further control the connecting state of the water passage 13.

[0037] As for the second switch assembly 3, in one embodiment, the second switch assembly 3 includes a pressure relief member 31, a third elastic member 32 and a switch member 33. The pressure relief member 31 is movably installed in the second pressure relief chamber 18, and is provided with a blocking rod 311 inserted from the second connecting hole 181 into the second back pressure chamber 17, and a plug 312 is provided at the end of the blocking rod 311, and the plug 312 is further inserted into the second back pressure chamber 17 through the blocking rod 311 to open the second connecting hole 181, and the third elastic member 32 provides a reset force for the pressure relief member 31 to move away from the second connecting hole 181, and the plug 312 blocks the second connecting hole 181 through the reset action of the blocking rod 311 withdrawing from the second back pressure chamber 17.

[0038] One end of the switch member 33 is arranged in the second pressure relief chamber 18, and pushes the blocking rod 311 to be further inserted into the second back pressure chamber 17. Optionally, the switch member 33 is an airbag / hydraulic device, which is installed in the second pressure relief chamber 18 and is located on the side of the second pressure relief member 31 away from the second back pressure chamber 17. The airbag / hydraulic device is provided with a medium flow hole 331 extending to the outside of the switch body 1. The airbag or hydraulic device expands by inputting air / liquid, and pushes the pressure relief member 31 to approach the back pressure chamber. Furthermore, a receiving groove is provided at one end of the pressure relief member 31 away from the back pressure chamber, and the driving member 21 is a bellows-shaped airbag, one end of which is installed in the receiving groove, and the other end forms a cover of the pressure relief chamber.

[0039] For the above-mentioned pilot valve structure, the water pressure difference at both ends of the plugging member is used to control the state of the plugging member. The principle belongs to the prior art and will not be described here. In order to play a better switch role, the water inlet, water outlet and plugging member in the first back pressure chamber 14 and the second back pressure chamber 17 can adopt the following structure: the water outlet is arranged around the water inlet. The plugging member is an elastic rubber pad, and the peripheral part is fixedly installed on the peripheral wall of the back pressure chamber by pressing, and the middle part simultaneously blocks or opens the water outlet and the water inlet. A guide rod passing through the overflow hole is provided in the back pressure chamber, and the gap between the guide rod and the overflow hole forms an overflow channel, so that the overflow hole can be enlarged, reducing the difficulty of molding, and it also has a guiding function.

[0040] The use principle of the hydraulic switch provided by the present invention is: In the initial state, the second back pressure chamber 17 is closed, the water passage 13 is blocked, and under the action of the first elastic member 23, the driving member 21 is close to the first back pressure chamber 14, the switching member 22 blocks the first connecting hole 151, and the first back pressure chamber 14 is also closed, and the water inlet channel 11 and the water outlet channel 12 are separated; When the airbag of the second switch assembly 3 is inflated, the airbag expands and pushes the pressure relief member 31 to move toward the second back pressure chamber 17. At this time, the blocking rod 311 opens the second back pressure chamber 17, allowing the water passage 13 to communicate, and water is injected into the first pressure relief chamber 15. Under the action of hydraulic force, the driving member 21 is pushed and moved, and separated from the switching member 22. At this time, the guide protrusion 5 is at the outermost tooth of the guide profile 4, thereby driving the switching member 22 to swing and open the first connecting hole 151, thereby opening the first back pressure chamber 14. At this time, the water inlet channel 11 is connected to the water outlet channel 12, and the water outlet channel 12 discharges water for the first time; The pressure relief member 31 is reset under the action of the third elastic member 32, the second back pressure chamber 17 is closed again, the first pressure relief chamber 15 no longer enters water, and water is drained through the first drain hole 152. At the same time, the driving member 21 is gradually reset under the action of the first elastic member 23, and the guide protrusion 5 comes into the tooth groove at the outermost end of the guide profile 4, thereby driving the switching member 22 to swing and close the first connecting hole 151, thereby closing the first back pressure chamber 14. At this time, the water inlet channel 11 and the water outlet channel 12 are blocked, and the water outlet channel 12 stops flowing for the first time. The first pressure relief chamber 15 continues to drain water through the first drain hole 152, and the driving member 21 continues to reset under the action of the first elastic member 23, and the guide protrusion 5 comes to the tooth in the middle of the guide profile 4, thereby driving the switching member 22 to swing and open the first connecting hole 151, thereby opening the first back pressure chamber 14. At this time, the water inlet channel 11 is connected to the water outlet channel 12, and the water outlet channel 12 discharges water for the second time; The first pressure relief chamber 15 continues to drain water through the first drain hole 152, and the driving member 21 continues to reset under the action of the first elastic member 23, and the guide protrusion 5 comes into the tooth groove in the middle of the guide profile 4, thereby driving the switching member 22 to swing and close the first connecting hole 151, thereby closing the first back pressure chamber 14. At this time, the water inlet channel 11 and the water outlet channel 12 are blocked, and the water outlet channel 12 stops water for the second time; The first pressure relief chamber 15 continues to drain water through the first drain hole 152, and the driving member 21 continues to reset under the action of the first elastic member 23, and the guide protrusion 5 comes to the innermost tooth of the guide profile 4, thereby driving the switching member 22 to swing and open the first connecting hole 151, thereby opening the first back pressure chamber 14. At this time, the water inlet channel 11 is connected to the water outlet channel 12, and the water outlet channel 12 discharges water for the third time; The first pressure relief chamber 15 continues to drain water through the first drain hole 152, and the driving member 21 continues to reset under the action of the first elastic member 23. The guide protrusion 5 comes into the innermost tooth groove of the guide profile 4, thereby driving the switching member 22 to swing and close the first connecting hole 151, and then close the first back pressure chamber 14. At this time, the water inlet channel 11 and the water outlet channel 12 are blocked, and the water outlet channel 12 stops water for the third time. After that, the driving member 21 gradually returns to its initial state.

[0041] The hydraulic switch provided by the present invention is a purely mechanical structure, which includes a first switch component 2 provided with a driving member 21 that can be pushed and moved by water force, and when the driving member 21 moves, it can drive the switching member 22 to open and close the first back pressure chamber 14 at a preset number of times through the guide profile 4 and the guide protrusion 5, thereby realizing that the water channel connected through the first back pressure chamber 14 can discharge multiple sections of independent water under one water discharge control.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0046] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0047] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A hydraulic switch, characterized in that: It includes a switch body, a first switch component 2 and a second switch component 3; The switch body includes a water inlet channel, a water outlet channel, a water passage channel, a first back pressure chamber, a first pressure relief chamber and a first blocking member; The water outlet of the water inlet channel and the water inlet of the water outlet channel are arranged close to each other and are both connected to the first back pressure chamber; the first back pressure chamber and the first pressure relief chamber are provided with a first communicating hole, and the first pressure relief chamber is also provided with a first drain hole; the first blocking member is movably installed in the first back pressure chamber, and divides the first back pressure chamber into two mutually isolated areas, one side of the first blocking member is connected to the water outlet of the water inlet channel and the water inlet of the water outlet channel, and the other side is connected to the first communicating hole, and the first blocking member is also provided with a first overflow hole connecting the two areas within the range of the water outlet of the water inlet channel; the water inlet channel and the water outlet channel are connected or blocked by the movement of the first blocking member; One end of the water passage is connected to the first pressure relief chamber, and the other end is connected to the water inlet passage; the second switch assembly is installed on the switch body and controls the connection state of the water passage; The first switch assembly includes a driving member, a switching member and a first elastic member; the driving member is slidably installed in the first pressure relief chamber in a piston manner, and the first pressure relief chamber is divided into a pressure relief zone and a retreat zone, and the first connecting hole, the first drainage hole and the water passage are all connected to the pressure relief zone; the first elastic member provides a reset force for the driving member to move toward the pressure relief zone; the switching member is movably installed close to the first connecting hole, and opens or blocks the first connecting hole; the driving member is provided with a driving part, and the switching member is provided with a driven part on the side of the driving member, one of the driving part or the driven part is provided with a guide profile, and the other is provided with a guide protrusion moving along the guide profile; during the movement of the driving member, the driving part drives the driven part to swing back and forth in a direction perpendicular to the movement of the driving member through the guide profile and the guide protrusion, and the switching member forms a switching action of opening and blocking the first connecting hole through the reciprocating swing.

2. A hydraulic switch according to claim 1, characterized in that: The guide profile is a groove, or the guide profile is a side wall of the driving part or the driven part; the guide profile is composed of a plurality of concave tracks and convex tracks in sequence along the moving direction of the driving part, and a second elastic part is also provided in the driving part, and the second elastic part pushes the driven part to be close to the driving part.

3. A hydraulic switch according to claim 2, characterized in that: The guide profile is arranged on the periphery of the driving member, is in a tooth groove shape, and has three teeth; the guide protrusion is arranged on the driven part, is in a tooth shape; the first elastic member and the second elastic member are both compressed springs, the first elastic member is arranged in the retreat area of ​​the first pressure relief chamber, and the second elastic member is arranged in the pressure relief area of ​​the first pressure relief chamber.

4. A hydraulic switch according to claim 2, characterized in that: A boss and a mounting seat are provided at one end of the pressure relief zone facing the driving member, the first communicating hole is provided on the side of the boss, the switching member is swingably or slidably mounted on the mounting seat, and a cover is provided for opening or blocking the first communicating hole; the driving member is provided with an inner cavity for accommodating the boss, the mounting seat and the switching member, the driving part is provided in the inner cavity and extends along the circumference of the switching member; an annular step is provided on the circumference of the driving member, and a V-shaped sealing ring is installed at one end of the annular step facing the pressure relief chamber.

5. A hydraulic switch according to claim 1, characterized in that: The other end of the first drainage hole is connected to the water outlet channel, and the drainage speed of the first drainage hole to the first pressure relief chamber is lower than the water inflow speed of the water passage to the first pressure relief chamber.

6. A hydraulic switch according to claim 1, characterized in that: The water passage is divided into a water inlet section and a water outlet section, one end of the water inlet section is connected to the water inlet passage, and one end of the water outlet section is connected to the first pressure relief chamber; the switch body also includes a second back pressure chamber, a second pressure relief chamber and a second blocking member; The water outlet of the water inlet section and the water inlet of the water outlet section are arranged close to each other and are both connected to the second back pressure chamber; the second back pressure chamber and the second pressure relief chamber are provided with a second communicating hole, and the second pressure relief chamber is also provided with a second drainage hole; the second blocking member is movably installed in the second back pressure chamber, and divides the second back pressure chamber into two mutually isolated areas, one side of the second blocking member is connected to the water outlet of the water inlet section and the section of the water outlet channel, and the other side is connected to the second communicating hole, and the second blocking member is also provided with a second overflow hole connecting the two areas within the water outlet range of the water inlet section; the water inlet section and the water outlet section are connected or blocked by the movement of the second blocking member; The second switch assembly is installed in the second pressure relief chamber and controls the connection state of the second connecting hole.

7. A hydraulic switch according to claim 6, characterized in that: The second switch assembly includes a pressure relief member, a third elastic member and a switch member; the pressure relief member is movably installed in the second pressure relief chamber, and is provided with a blocking rod inserted from the second connecting hole into the second back pressure chamber, and a plug is provided at the end of the blocking rod, and the plug is further inserted into the second back pressure chamber through the blocking rod to open the second connecting hole, the third elastic member provides a reset force for the pressure relief member to be away from the second connecting hole, and the plug blocks the second connecting hole through the reset action of the blocking rod withdrawing from the second back pressure chamber; One end of the switch member is arranged in the second pressure relief chamber, and pushes the blocking rod to further insert into the second back pressure chamber.

8. A hydraulic switch according to claim 7, characterized in that: The switch component is an air bag / hydraulic device, which is installed in the second pressure relief chamber and is located on the side of the second pressure relief chamber away from the second back pressure chamber. The air bag / hydraulic device is provided with a medium flow hole extending to the outside of the switch body. The air bag or hydraulic device is expanded by inputting air / liquid and pushes the pressure relief component close to the back pressure chamber.

9. A hydraulic switch according to claim 8, characterized in that: The pressure relief member has an end away from the back pressure chamber and is provided with a receiving groove. The driving member is a bellows-shaped air bag, one end of which is installed in the receiving groove and the other end forms a cover for the pressure relief chamber.

10. A hydraulic switch according to claim 1 or 6, characterized in that: The water outlet is arranged around the water inlet; the sealing member is an elastic rubber pad, the periphery of which is fixedly installed on the peripheral wall of the back pressure cavity by pressing, and the middle part simultaneously blocks or opens the water outlet and the water inlet; a guide rod passing through the overflow hole is provided in the back pressure cavity, and the gap between the guide rod and the overflow hole forms an overflow channel.

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