A faucet valve core with switchable electric control mode and manual mode

Abstract

The present invention relates to a faucet valve core capable of switching between an electric control mode and a manual mode, which comprises a valve housing, a valve handle, a movable valve plate and a fixed valve plate. An inlet channel and an outlet channel are provided at the bottom of the valve housing and on the fixed valve plate. It is characterized in that: a rotor connected to the valve handle is further provided in the valve housing, the movable valve plate is fixed to the bottom surface of the rotor, a transition water chamber, a first transition inlet and a second transition inlet are provided on the movable valve plate. The transition water chamber is always communicated with the outlet channel and the first transition inlet, the second transition inlet is arranged at an interval from the transition water chamber, and the rotation of the movable valve plate can make the inlet channel communicate with either the first transition inlet or the second transition inlet. A transition flow channel and a valve port are provided on the rotor, and the second transition inlet is communicated with the transition water chamber through the transition flow channel and the valve port. An electric control switch for opening and closing the valve port is provided at the valve port. The faucet adopting this faucet valve core can be switched to a common faucet for use after the electric control switch is damaged.

Description

Technical Field

[0001] The present invention belongs to the technical field of faucets with automatic water outlet (inductive water outlet), and particularly relates to a faucet valve core that can switch between an electric control mode and a manual mode. Background Art

[0002] There are mainly two methods for controlling the water outlet of existing faucets. One is to manually control the water outlet through a handle, and the other is to control an electric control switch such as a solenoid valve switch by receiving and transmitting signals through an induction component to achieve water outlet control. Since an inductive faucet can be switched on and off without contacting the faucet body, it is not only convenient to use but also helps to keep the faucet surface clean. Inductive faucets also have two modes. One is the long water outlet mode, where the faucet is opened by induction once and closed by induction again. The other is the inductive water outlet mode, where the conditions for opening the faucet are set, and it is opened when the conditions are met and closed when the conditions are not met. For example, the faucet is opened when an object is sensed at a predetermined position and closed when no object is sensed at the predetermined position; or, the faucet is opened when it is detected that the faucet handle or the water outlet leaves the predetermined position, and closed when it is detected that the faucet handle or the water outlet is at the predetermined position.

[0003] Regardless of the type of inductive faucet, the following defects exist. When the solenoid valve switch is damaged, the faucet cannot sense water outlet or always keeps flowing continuously, making it impossible to be used normally. This requires replacing the faucet, increasing the usage cost.

[0004] There are also some inductive faucets combined with a valve core, where the solenoid valve switch is separately designed and installed from the valve core. The valve core is a multi-functional valve core that can adjust the water temperature and close the waterway. For example, the Chinese patent application for invention "An Inductive Faucet and Its Control Method" with the application number CN202110341610.8 (publication number CN112963608A) discloses such a structure of an inductive faucet. However, the aforementioned inductive faucet still has the defect that it cannot sense water outlet after the solenoid valve switch is damaged.

[0005] There is also an inductive faucet valve core that directly combines the solenoid valve switch onto the valve core, which has the advantage of a compact structure. For example, the Chinese patent application for invention "An Inductive Faucet Valve Core" with the application number CN202110211437.X (publication number CN112833221A) discloses such a valve core structure. However, this valve core still has the defect that it cannot sense water outlet after the solenoid valve switch is damaged.

[0006] In view of the foregoing situation, the existing inductive faucet valve cores can be further improved. Summary of the Invention

[0007] The first technical problem to be solved by the present invention is to provide a faucet valve core with a reasonable and compact structure design that can be switched between an electric control mode and a manual mode in view of the above-mentioned prior art status, so as to make it possible to convert the faucet using this valve core into a common faucet after the electric control switch is damaged, so that the faucet can still be used normally after the electric control switch is damaged.

[0008] The technical solution adopted by the present invention to solve the above first technical problem is: a faucet valve core that can be switched between an electric control mode and a manual mode, including a valve housing and a valve handle that can rotate around its own axis. A moving valve plate and a fixed valve plate are arranged in the valve housing. The fixed valve plate is fixed at the bottom of the valve housing. An inlet channel and an outlet channel are arranged on the bottom of the valve housing and the fixed valve plate. It is characterized in that: a rotor connected to the valve handle and capable of rotating with the valve handle is further arranged in the valve housing. The moving valve plate is fixed on the bottom surface of the rotor. A transition water chamber, a first transition inlet and a second transition inlet are arranged on the moving valve plate. The transition water chamber is always communicated with the outlet channel and the first transition inlet. The second transition inlet is arranged at an interval from the transition water chamber. The rotation of the moving valve plate can make the inlet channel communicate with either the first transition inlet or the second transition inlet. A transition flow channel and a valve port are arranged on the rotor. The second transition inlet is communicated with the transition water chamber through the transition flow channel and the valve port. An electric control switch for opening and closing the valve port is arranged at the valve port.

[0009] Further improvement: There are two above-mentioned inlet channels, namely a first inlet channel and a second inlet channel. This structure enables the faucet valve core to have a water temperature adjustment function (mixing water function) in both the electric control mode and the manual mode. Only by respectively connecting cold water or hot water to the first inlet channel and the second inlet channel, the transition water chamber forms a mixing water chamber.

[0010] Further improvement: The rotation of the above-mentioned moving valve plate can block both the first transition inlet and the second transition inlet from the inlet channel. This structure enables the faucet valve core to have the function of manually closing the water source in both the electric control mode and the manual mode.

[0011] Preferably, when the movable valve plate is in the initial state, both the first transition water inlet and the second transition water inlet are blocked from the first water inlet passage and the second water inlet passage; during the counterclockwise rotation of the movable valve plate from the initial state, the second transition water inlet is first communicated with the second water inlet passage, and when continuing to rotate, the second transition water inlet starts to be communicated with the first water inlet passage; during the clockwise rotation of the movable valve plate from the initial state, the first transition water inlet is first communicated with the first water inlet passage, and when continuing to rotate, the first transition water inlet starts to be communicated with the second water inlet passage. This structure enables the valve core to be in a closed state in the initial state, avoiding water leakage during assembly, and the clockwise and counterclockwise rotation directions of the movable valve plate respectively correspond to the electric control mode and the manual mode, with an orderly mode switch, which is conducive to operation.

[0012] As an improvement, a first stopper protruding upward is provided on the top surface of the valve housing, and a limit sleeve is fixedly sleeved on the valve stem, and the limit sleeve has a second stopper protruding downward; when the movable valve plate rotates counterclockwise from the initial state to the position where the second stopper is engaged with the first stopper, the overlapping area between the second transition water inlet and the first water inlet passage is the largest; when the movable valve plate rotates clockwise from the initial state to the position where the second stopper is engaged with the first stopper, the overlapping area between the first transition water inlet and the second water inlet passage is the largest. The cooperation of the first stopper and the second stopper has a constraining effect on the maximum rotation angle of the movable valve plate, and at the limit positions, it respectively corresponds to the maximum overlapping area of the corresponding transition water inlet and the corresponding water inlet passage in the cross section.

[0013] For further improvement, an installation hole is provided on the side wall of the rotor, and an indicating pin held by a spring and partially exposed is installed in the installation hole. Four convex ribs are provided on the inner wall of the valve housing at intervals along the circumference. Among them, the two middle convex ribs are adjacent to each other, and an initial positioning groove for the indicating pin to be inserted is formed between them; when the movable valve plate is in the initial state, the indicating pin is stuck in the initial positioning groove; when the movable valve plate rotates clockwise to the state where the indicating pin just crosses the outermost convex rib in the clockwise direction, the overlapping area between the first transition water inlet and the first water inlet passage is the largest; when the movable valve plate rotates counterclockwise to the state where the indicating pin just crosses the outermost convex rib in the counterclockwise direction, the overlapping area between the second transition water inlet and the second water inlet passage is the largest. The setting of the initial positioning groove gives a certain feel when the movable valve plate starts to drive from the initial position, and the indicating pin cannot easily deflect in the clockwise and counterclockwise directions in the initial positioning groove. When the indicating pin crosses the outermost two convex ribs, there is a certain feel, indicating that when we continue to rotate at this position, we enter the mixing water mode. The operation is more user-friendly. It clearly indicates to the user at what position the mode switch is made.

[0014] Preferably, the above-mentioned electric control switch blocks the valve port under normal conditions to cut off the second transitional water inlet and the transitional water cavity, and when powered on, the electric control switch opens the valve port to make the second transitional water inlet and the transitional water cavity communicate. The electric control switch mostly adopts a solenoid valve switch. In the power-off state of the solenoid valve switch, the valve stem remains extended under the action of the spring, which is conducive to blocking the valve port. When powered on, the valve stem is attracted and retracted, which is conducive to opening the valve port.

[0015] For further improvement, the above-mentioned rotor is snap-connected to the lower end of the valve handle. The snap-connection method is convenient for connection. The rotor has an annular wall extending into the inner cavity of the valve handle. There is an annular inner shoulder in the inner cavity wall of the valve handle. There is an outwardly protruding annular outer shoulder on the outer wall of the housing of the electric control switch. The annular outer shoulder is pressed between the annular inner shoulder and the annular wall. The annular outer shoulder being pressed between the annular inner shoulder and the annular wall is conducive to axially limiting the electric control switch.

[0016] For further improvement, the inner cavity wall of the above-mentioned valve handle has a downwardly extending limiting block. The limiting block is located below the annular inner shoulder. The annular outer shoulder is provided with a limiting groove that is inserted and matched with the limiting block. The insertion and matching of the limiting block and the limiting groove form a radial limit for the electric control switch, preventing the electric control switch from rotating around its own axis relative to the valve handle.

[0017] For convenient assembly, the above-mentioned valve housing is composed of a upper housing and a base that are snap-connected. The base forms the bottom of the valve housing. The fixed valve plate is snap-connected to the base. A first sealing member is provided between the fixed valve plate and the base. A second sealing member is provided between the movable valve plate and the rotor. The setting of the sealing member prevents water from leaking from the places where it should not leak.

[0018] Compared with the prior art, the advantages of this valve core module group are as follows: The faucet adopting this faucet valve core can be switched to a common faucet for use after the electric control switch is damaged, that is, it can be switched between the electric control mode and the manual mode, so that the faucet can still be used normally after the electric control switch is damaged, thus avoiding the embarrassing situation that the faucet cannot discharge water and there is no water available once the electric control switch is damaged. In the electric control mode, the movable valve plate is rotated to make the water inlet channel communicate with the second transitional water inlet and block the first transitional water inlet. The water inlet channel can only communicate with the water outlet channel after passing through the second transitional water inlet, the transitional flow channel, the valve port and the transitional water cavity in sequence, and the opening and closing of the valve port are controlled by an electric control switch (such as a solenoid valve switch or an electric switch) installed in the valve handle, so as to realize the electric control function; when the electric control switch fails (the electric control switch cannot open the valve port), at this time, it is necessary to switch to the manual mode, and rotate the movable valve plate in the reverse direction to make the water inlet channel communicate with the first transitional water inlet and block the second transitional water inlet. The transitional water cavity is always communicated with the water outlet channel and the first transitional water inlet, that is, the water can flow out from the water outlet channel without passing through the electric control switch, realizing the function of manually controlling the water flow. Description of the Drawings

[0019] Figure 1 Schematic diagram of the three-dimensional structure of the embodiment of the present invention Figure 1 ;

[0020] Figure 2 Schematic diagram of the three-dimensional structure of the embodiment of the present invention Figure 2 ;

[0021] Figure 3 Three-dimensional sectional view of the embodiment of the present invention (initial state);

[0022] Figure 4 Three-dimensional sectional view of the embodiment of the present invention (electric control mode);

[0023] Figure 5 Sectional view of the embodiment of the present invention (manual mode);

[0024] Figure 6 Exploded view of the three-dimensional structure of the embodiment of the present invention;

[0025] Figure 7 Schematic diagram of the three-dimensional structure of the upper housing in the embodiment of the present invention;

[0026] Figure 8 Schematic diagram of the three-dimensional structure of the rotor in the embodiment of the present invention;

[0027] Figure 9 Schematic diagram of the three-dimensional structure of the valve stem in the embodiment of the present invention. Detailed implementation manners

[0028] The present invention will be further described in detail below in conjunction with the embodiments with reference to the drawings.

[0029] As Figures 1 to 9 shown, it is a preferred embodiment of the present invention.

[0030] A faucet valve core capable of switching between an electric control mode and a manual mode includes a valve housing 1 and a valve stem 2 passing through the valve housing 1 and capable of rotating around its own axis. A moving valve plate 5 and a fixed valve plate 6 are arranged in the valve housing 1. The fixed valve plate 6 is fixed at the bottom of the valve housing 1. An inlet channel and an outlet channel 1c are provided on the bottom of the valve housing 1 and the fixed valve plate 6. In this embodiment, there is only one outlet channel 1c; the valve housing 1 is composed of a snap connection of an upper housing 11 and a base 12. The base 12 constitutes the bottom of the valve housing 1. The fixed valve plate 6 is snap-connected to the base 12. A first sealing member 8a is provided between the fixed valve plate and the base 12. A second sealing member 8b is provided between the moving valve plate 5 and the rotor 3.

[0031] Inside the valve housing 1, there is also a rotor 3 connected to the valve stem 2 and capable of rotating with the valve stem 2. The moving valve plate 5 is fixed to the bottom surface of the rotor 3. The moving valve plate 5 is provided with a transition water chamber 5a, a first transition water inlet 5b, and a second transition water inlet 5c. The transition water chamber 5a is always in communication with the water outlet passage 1c and the first transition water inlet 5b. The second transition water inlet 5c is arranged at an interval from the transition water chamber 5a. The rotation of the moving valve plate 5 can make the water inlet passage communicate with either the first transition water inlet 5b or the second transition water inlet 5c. That is, when the water inlet passage is in communication with the first transition water inlet 5b, it is blocked from the second transition water inlet 5c, and when the water inlet passage is in communication with the second transition water inlet 5c, it is blocked from the first transition water inlet 5b. The rotor 3 is provided with a transition flow passage 31 and a valve port 32. The second transition water inlet 5c is communicated with the water outlet passage 1c through the transition flow passage 31, the valve port 32, and the transition water chamber 5a in sequence. An electric control switch 7 for opening and closing the valve port 32 is installed inside the valve stem 2. In the normal state, the electric control switch 7 blocks the valve port 32 to cut off the second transition water inlet 5c and the transition water chamber 5a, and when powered on, the electric control switch 7 opens the valve port 32 to make the second transition water inlet 5c and the transition water chamber 5a conduct. The electric control switch 7 mostly adopts an electromagnetic valve switch. In the power-off state of the electromagnetic valve switch, the valve stem remains extended under the action of the spring, which is beneficial for blocking the valve port 32. When powered on, the valve stem is attracted and retracted, which is beneficial for opening the valve port 32. The specific structure of the electric control switch 7 is not detailedly expanded in the drawings and it is prior art.

[0032] In this embodiment, there are two water inlet passages, namely a first water inlet passage 1a and a second water inlet passage 1b. The first transition water inlet 1b is arranged adjacent to the first water inlet passage 1a, and the second transition water inlet 5c is arranged adjacent to the second water inlet passage 1b. The rotation of the moving valve plate 5 can make the first transition water inlet 1b communicate with the first water inlet passage 1a and / or the second water inlet passage 1b, or make the second transition water inlet 5c communicate with the first water inlet passage 1a and / or the second water inlet passage 1b.

[0033] When the moving valve plate 5 is in the initial state, both the first transition water inlet 5b and the second transition water inlet 5c are blocked from the first water inlet passage 1a and the second water inlet passage 1b.

[0034] During the counterclockwise rotation of the moving valve plate 5 from the initial state, the second transition water inlet 5c first communicates with the second water inlet passage 1b. Continuing to rotate, the second transition water inlet 5c then starts to communicate with the first water inlet passage 1a, which is the maximum clockwise rotation angle of the moving valve plate 5.

[0035] During the clockwise rotation of the moving valve plate 5 from the initial state, the first transition water inlet 5b first communicates with the first water inlet passage 1a. Continuing to rotate, the first transition water inlet 5b then starts to communicate with the second water inlet passage 1b, which is the maximum counterclockwise rotation angle of the moving valve plate 5.

[0036] On the top surface of the valve housing 1, there is a first stop block 111 protruding upward. A limit sleeve 4 is fixedly sleeved on the valve handle 2, and the limit sleeve 4 has a second stop block 41 protruding downward. When the moving valve plate 5 rotates counterclockwise from the initial state to the position where the second stop block 41 is engaged with the first stop block 111, the overlapping area between the second transition water inlet 5c and the first water inlet passage 1a is the largest. When the moving valve plate 5 rotates clockwise from the initial state to the position where the second stop block 41 is engaged with the first stop block 111, the overlapping area between the first transition water inlet 5b and the second water inlet passage 1b is the largest.

[0037] The side wall of the rotor 3 is provided with a mounting hole 33. An indicating pin 8 held by a spring 81 and partially exposed is installed in the mounting hole 33. There are four convex ribs 112 arranged at intervals along the circumference on the inner wall of the valve housing 1. Among them, the two middle convex ribs 112 are adjacent to each other, and an initial positioning groove 113 for the indicating pin 8 to be inserted into is formed between them.

[0038] When the moving valve plate 5 is in the initial state, the indicating pin 8 is stuck in the initial positioning groove 113.

[0039] When the moving valve plate 5 rotates clockwise to the state where the indicating pin 8 just crosses the outermost convex rib 112 in the clockwise direction (the middle position state in the clockwise direction), the overlapping area between the first transition water inlet 5b and the first water inlet passage 1a is the largest.

[0040] When the moving valve plate 5 rotates counterclockwise to the state where the indicating pin 8 just crosses the outermost convex rib 112 in the counterclockwise direction (the middle position state in the counterclockwise direction), the overlapping area between the second transition water inlet 5c and the second water inlet passage 1b is the largest.

[0041] The rotor 3 is snap-connected to the lower end of the valve handle 2. The rotor 3 has an annular wall 34 extending into the inner cavity of the valve handle 2. There is an annular inner shoulder 21 in the inner cavity wall of the valve handle 2. There is an outwardly protruding annular outer shoulder 71 on the outer shell wall of the electric control switch 7. The annular outer shoulder 71 is pressed between the annular inner shoulder 21 and the annular wall 34. The inner cavity wall of the valve handle 2 has a downwardly extending limit block 22. The limit block 22 is located below the annular inner shoulder 21. There is a limit groove 72 on the annular outer shoulder 71 that is inserted and matched with the limit block 22.

[0042] The working principle and process of this faucet valve core are as follows:

[0043] When the moving valve plate 5 is in the initial state, as Figure 3 shown, both the first transition water inlet 5b and the second transition water inlet 5c are blocked from the first water inlet passage 1a and the second water inlet passage 1b, and the indicating pin 8 is stuck in the initial positioning groove 113.

[0044] In the electric control mode, as Figure 4As shown, during the process of the moving valve plate 5 rotating counterclockwise from the initial state, the second transition water inlet 5c first communicates with the second water inlet passage 1b. Continuing to rotate, the second transition water inlet 5c then starts to communicate with the first water inlet passage 1a, which is the maximum angle of counterclockwise rotation of the moving valve plate 5. The second stop block 41 is engaged with one side of the first stop block 111, and this process is the process of adjusting the water temperature. During this process, the first transition water inlet 5b is always blocked from the first water inlet passage 1a and the second water inlet passage 1b. After the water flow enters from the first water inlet passage 1a and / or the second water inlet passage 1b, it successively passes through the second transition water inlet 5c, the transition flow channel 31, the valve port 32, and the transition water chamber 5a and then flows out from the water outlet passage 1c. The opening and closing of the valve port 32 are controlled by an electric control switch 7 (such as a solenoid valve switch or an electric switch) installed in the valve handle 2, thereby realizing the electric control function.

[0045] When the electric control switch 7 fails (the electric control switch 7 cannot open the valve port 32), it is necessary to switch to the manual mode, as Figure 5 shown. Rotate the moving valve plate counterclockwise, then rotate the moving valve plate 5 clockwise until the initial position, and then continue to rotate the moving valve plate 5 clockwise. The first transition water inlet 5b first communicates with the first water inlet passage 1a. Continuing to rotate, the first transition water inlet 5b then starts to communicate with the second water inlet passage 1b, which is the maximum angle of clockwise rotation of the moving valve plate 5. The second stop block 41 is engaged with the other side of the first stop block 111, and this process is the process of adjusting the water temperature. During this process, the first transition water inlet 5b is always blocked from the first water inlet passage 1a and the second water inlet passage 1b, and the transition water chamber 5a is always communicated with the water outlet passage 1c and the first transition water inlet 5b. After the water flow enters from the first water inlet passage 1a and / or the second water inlet passage 1b, it successively passes through the first transition water inlet 5b and the transition water chamber 5a and then flows out from the water outlet passage 1c, that is, the water flow can flow out from the water outlet passage 1c without passing through the electric control switch 7, realizing the function of manually controlling the water flow.

[0046] The faucet adopting this faucet valve core can be switched to a common faucet for use after the electric control switch is damaged, that is, it can be switched between the electric control mode and the manual mode, so that the faucet can still be used normally after the electric control switch is damaged, thus avoiding the embarrassing situation that the faucet cannot discharge water and there is no water available once the electric control switch is damaged.

[0047] It should be noted that in the description of this embodiment, the orientation or positional relationships indicated by terms such as "front, back", "left, right", "up, down", "clockwise", "counterclockwise", etc. are all based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. The terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A faucet valve core capable of switching between an electric control mode and a manual mode, comprising a valve housing (1) and a valve handle (2) capable of rotating around its own axis. A moving valve plate (5) and a fixed valve plate (6) are arranged inside the valve housing (1). The fixed valve plate (6) is fixed at the bottom of the valve housing (1). An inlet channel and an outlet channel (1c) are provided on the bottom of the valve housing (1) and the fixed valve plate (6). It is characterized in that: Inside the valve housing (1), there is also a rotor (3) connected to the valve stem (2) and capable of rotating with the valve stem (2). The moving valve plate (5) is fixed to the bottom surface of the rotor (3). The moving valve plate (5) is provided with a transition water chamber (5a), a first transition water inlet (5b), and a second transition water inlet (5c). The transition water chamber (5a) is always in communication with the water outlet passage (1c) and the first transition water inlet (5b). The second transition water inlet (5c) is spaced from the transition water chamber (5a). The rotation of the moving valve plate (5) can make the water inlet passage communicate with either the first transition water inlet (5b) or the second transition water inlet (5c). The rotor (3) is provided with a transition flow passage (31) and a valve port (32). The second transition water inlet (5c) is in communication with the transition water chamber (5a) through the transition flow passage (31) and the valve port (32). An electric control switch (7) for opening and closing the valve port (32) is provided at the valve port (32). There are two water inlet passages, namely a first water inlet passage (1a) and a second water inlet passage (1b). The rotation of the moving valve plate (5) can block both the first transition water inlet (5b) and the second transition water inlet (5c) from the water inlet passage. When the moving valve plate (5) is in the initial state, both the first transition water inlet (5b) and the second transition water inlet (5c) are blocked from the first water inlet passage (1a) and the second water inlet passage (1b). During the process of the moving valve plate (5) rotating counterclockwise from the initial state, the second transition water inlet (5c) first communicates with the second water inlet passage (1b). Continuing to rotate, the second transition water inlet (5c) then starts to communicate with the first water inlet passage (1a). During the process of the moving valve plate (5) rotating clockwise from the initial state, the first transition water inlet (5b) first communicates with the first water inlet passage (1a). Continuing to rotate, the first transition water inlet (5b) then starts to communicate with the second water inlet passage (1b).

2. The faucet valve core according to claim 1, characterized in that: On the top surface of the valve housing (1), there is a first stop block (111) protruding upward. A limit sleeve (4) is fixedly sleeved on the valve stem (2). The limit sleeve (4) has a second stop block (41) protruding downward. When the moving valve plate (5) rotates counterclockwise from the initial state to the position where the second stop block (41) is engaged with the first stop block (111), the overlapping area between the second transition water inlet (5c) and the first water inlet passage (1a) is the largest. When the moving valve plate (5) rotates clockwise from the initial state to the position where the second stop block (41) is engaged with the first stop block (111), the overlapping area between the first transition water inlet (5b) and the second water inlet passage (1b) is the largest.

3. The faucet valve core according to claim 2, characterized in that: The side wall of the rotor (3) is provided with a mounting hole (33), and an indicating pin (8) held by a spring (81) and partially exposed is installed in the mounting hole (33). Four convex ribs (112) are arranged at intervals along the circumference on the inner wall of the valve housing (1). Among them, the two middle convex ribs (112) are arranged adjacent to each other, and an initial positioning groove (113) for the indicating pin (8) to snap into is formed between them; When the moving valve plate (5) is in the initial state, the indicating pin (8) is snapped into the initial positioning groove (113); When the moving valve plate (5) rotates clockwise until the indicating pin (8) just crosses the outermost convex rib (112) in the clockwise direction, the overlapping area between the first transition water inlet (5b) and the first water inlet passage (1a) is the largest; When the moving valve plate (5) rotates counterclockwise until the indicating pin (8) just crosses the outermost convex rib (112) in the counterclockwise direction, the overlapping area between the second transition water inlet (5c) and the second water inlet passage (1b) is the largest.

4. The faucet valve core according to claim 1, characterized in that: The electric control switch (7) blocks the valve port (32) under normal conditions to cut off the second transition water inlet (5c) and the transition water chamber (5a), and when powered on, the electric control switch (7) opens the valve port (32) to make the second transition water inlet (5c) and the transition water chamber (5a) communicate.

5. The faucet valve core according to claim 1, wherein: The rotor (3) is snap-connected to the lower end of the valve handle (2). The rotor (3) has an annular wall (34) extending into the inner cavity of the valve handle (2). An annular inner shoulder (21) is provided in the inner cavity wall of the valve handle (2). An outwardly protruding annular outer shoulder (71) is provided on the outer wall of the housing of the electric control switch (7). The annular outer shoulder (71) is pressed between the annular inner shoulder (21) and the annular wall (34).

6. The faucet valve core according to claim 5, characterized in that: The inner cavity wall of the valve handle (2) has a downwardly extending limiting block (22). The limiting block (22) is located below the annular inner shoulder (21). A limiting groove (72) for inserting and mating with the limiting block (22) is provided on the annular outer shoulder (71).

7. The faucet valve core according to claim 1, wherein: The valve housing (1) is composed of a upper housing (11) and a base (12) connected by snap connection. The base (12) forms the bottom of the valve housing (1). The fixed valve plate (6) is snap-connected to the base (12). A first sealing member (9a) is provided between the fixed valve plate and the base (12). A second sealing member (9b) is provided between the moving valve plate (5) and the rotor (3).

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