Mode-switchable delay function valve element and delay faucet

Abstract

The utility model relates to a mode switchable valve core with a time delay function, which comprises a conventional valve core body with a water inlet and a water outlet at the bottom, and the conventional valve core body comprises a valve plate group and a valve handle; the valve element is characterized by further comprising a valve seat, the conventional valve element body is installed in a valve element cavity of the valve seat, and a water inlet channel and a water outlet channel are formed in the valve seat; the mounting seat is fixed at the bottom of the valve seat, and a water inlet runner, a water outlet runner and a mounting cavity are arranged in the mounting seat; the time delay module is arranged in the mounting cavity and comprises a shell, a first magnet, a second magnet, a push rod and a spring; a water passing cavity, a piston cavity and a guide cavity are formed in the shell, and the upper end of the push rod is upwards exposed out of the valve seat. Switching of the mode (the delayed water outlet mode or the conventional water outlet mode) can be achieved by pressing the push rod. The utility model further relates to a time-delay faucet adopting the valve element.

Description

Technical Field

[0001] The utility model relates to a time-delay valve core for controlling water outlet, in particular to a time-delay function valve core with switchable modes. The utility model also relates to a time-delay faucet adopting the time-delay function valve core. Background Art

[0002] A time-delay valve core is a type of on-off valve core that features a delayed, self-closing feature, effectively conserving water. It's widely used in faucets in public places such as public toilets, hotels, and train stations. Currently, most mechanical time-delay, self-closing faucets use water or gas as a damping medium. A fixed groove or small hole forms a channel connecting to a time-delay storage chamber. The valve stem, which in turn drives the piston's axial movement, rapidly drains the fluid from the time-delay storage chamber. When the pressure on the valve stem is removed, the spring and the water drawn into the time-delay storage chamber through the channel cause the valve stem to slowly move axially and reset, closing the valve.

[0003] For example, Chinese utility model patent No. ZL201922044045.X (authorization publication No. CN211288855U) discloses a multifunctional time-delay valve core comprising a housing and a base; a switch delay assembly and a regulating assembly are disposed within the housing; the regulating assembly comprises a static water valve disc and a dynamic water valve disc; the switch delay assembly and the regulating assembly are connected by a locking mechanism to drive the dynamic water valve disc to rotate relative to the static water valve disc, thereby controlling the water flow ratio between the first water passage and the second and third water passages; the static water valve disc is mounted on a fixed seat, and the housing and the fixed seat are relatively stationary and locked in a relative manner; the switch delay assembly comprises a valve body, a movable member, a piston, a deformable seal, a spring, and a hydraulic solution; the piston is fixed to the movable member, and the deformable seal is fixed within the piston groove. Chinese utility model patent No. ZL202122637589.4 (authorization publication No. CN217634094U) also discloses a similar push-type time-delay valve core.

[0004] The existing delay valve core has a single function, and the faucet using this valve core can only be used as a delay faucet. However, in actual use, it is sometimes more convenient to use it as a regular valve core. This makes the wash basin installed with the delay faucet unable to meet the needs, and the delay faucet needs to be replaced with a regular faucet, which is inconvenient and the replacement cost is high. Utility Model Content

[0005] The first technical problem to be solved by the present invention is to provide a delay function valve core with a new structure and capable of switching between a conventional valve core function and a delay valve core function in response to the above-mentioned existing technical status.

[0006] The technical solution adopted by the present invention to solve the first technical problem is: a mode-switchable delay function valve core, comprising a conventional valve core body with a water inlet and a water outlet at the bottom, the conventional valve core body comprising a valve plate group for adjusting the flow of the water outlet and a valve handle for controlling the valve plate group; the characteristics include:

[0007] The valve seat, the conventional valve core body is installed in the valve core cavity of the valve seat, and the valve seat is provided with a water inlet channel and a water outlet channel running through the bottom of the valve seat, the upper end of the water inlet channel is connected to the water inlet, one end of the water outlet channel is connected to the water outlet, and the other end of the water outlet channel runs through the side wall of the valve seat;

[0008] A mounting seat is fixed to the bottom of the valve seat, and a water inlet flow channel, a water outlet flow channel and a mounting cavity are provided in the mounting seat. The upper end of the water inlet flow channel is connected to the water inlet channel, and the side of the water inlet flow channel is connected to the bottom of the mounting cavity through a bypass flow channel. The upper end of the water outlet flow channel is connected to the water outlet channel, and the lower end of the water outlet flow channel is connected to the side of the mounting cavity.

[0009] The delay module is arranged in the installation cavity, and the delay module includes a shell, a first magnet, a second magnet, a push rod, and a spring; the shell is provided with a water passage chamber, a piston chamber and a guide chamber, the water passage chamber is connected to the water outlet channel, the piston chamber and the water passage chamber are connected through a valve port, and the piston chamber is connected to the bypass flow channel; a piston rod is provided in the piston chamber, and a first sealing member for sealing the valve port is provided at the lower end of the piston rod, and a second sealing member is sleeved on the piston rod, and the second sealing member divides the piston chamber into an upper pressure chamber and a lower pressure chamber, and a pressure relief hole connecting the upper pressure chamber and the water passage chamber is opened on the piston rod, and a pressure relief hole connecting the upper pressure chamber and the water passage chamber is opened. The pressure chamber and the water injection hole of the lower pressure chamber; the push rod is constrained to move up and down in the installation chamber, the upper end of the push rod is exposed outside the valve seat, the first magnet is installed in the guide chamber and can move up and down, the lower end of the first magnet is provided with a third sealing member for sealing the pressure relief hole, the second magnet is sleeved outside the guide chamber and can move up and down, the spring is provided below the second magnet and makes the second magnet move up and resist the push rod; the second magnet is in the upward position, the second magnet forms a downward repulsive force on the first magnet, the second magnet moves down to the downward position with the push rod, and the second magnet forms an upward repulsive force on the first magnet.

[0010] To facilitate installation of the delay module into the mounting base and facilitate machining of the water inlet and outlet channels and the mounting cavity, the mounting base is preferably composed of an upper and lower body that are buckled together. The top of the push rod has an upwardly extending guide shaft and a trigger shaft. The guide shaft is upwardly passed through a first sleeve and mounted on the upper body, while the trigger shaft is upwardly passed through a second sleeve and mounted on the upper body. Of course, the upper and lower bodies can also be threaded together.

[0011] To prevent scale or debris from clogging the water inlet, the third seal includes a needle portion extending downwardly and inserted into the water inlet. The cross-sectional area of ​​the needle portion is smaller than that of the water inlet. As the first magnet moves downward, the third seal moves the needle portion within the water inlet to clear impurities.

[0012] In order to facilitate the installation of the first magnet, piston rod and other components into the shell, and also to facilitate the formation of the water chamber, piston chamber and guide chamber, as an improvement, the above-mentioned shell is composed of an upper shell and a lower shell connected together by threads, the water chamber and piston chamber are arranged in the lower shell, the guide chamber is arranged in the upper shell, and the second magnet and spring sleeve are arranged outside the upper shell.

[0013] In a further improvement, the top of the upper housing has an upwardly projecting guide shaft portion, the guide cavity is disposed within the guide shaft portion, the second magnet and spring are sheathed outside the guide shaft portion, and the bottom of the push rod has a recessed clearance cavity into which the guide shaft portion extends. The guide shaft portion provides a secure mounting position for the second magnet and spring, and the provision of the clearance cavity enables a more compact installation of the push rod within the mounting cavity.

[0014] As a specific structure of the lower housing, the lower housing has an axial through hole, and a radial connecting portion is provided at the lower portion of the axial through hole. A water-passing gap is formed between the two sides of the connecting portion and the peripheral wall of the axial through hole. The connecting portion is provided with a concave cavity, which forms the water-passing cavity. The mouth of the cavity forms the valve port. The connecting portion is provided with a radially extending hole, which connects the cavity and the water outlet channel. The above structure facilitates injection molding.

[0015] As a preferred embodiment of a conventional valve core body, the conventional valve core body has two water inlets, namely a cold water inlet and a hot water inlet; the valve seat has two water inlet channels, namely a cold water inlet channel and a hot water inlet channel; the mounting seat has two water inlet channels, namely a cold water inlet channel and a hot water inlet channel; wherein the upper end of the cold water inlet channel is connected to the cold water inlet, the upper end of the hot water inlet is connected to the hot water inlet, the upper end of the cold water inlet channel is connected to the cold water inlet channel, the upper end of the hot water inlet channel is connected to the hot water inlet channel, the cold water inlet channel is connected to the water flow chamber via a bypass channel, and the hot water inlet channel is blocked from the water flow chamber. This conventional valve core body can not only control whether water is discharged, but also adjust the water temperature.

[0016] Of course, you can also choose a conventional valve core body with a simpler structure that only adjusts the water volume through a swinging motion. This conventional valve core body has one and only one water inlet. Correspondingly, there is only one water inlet channel on the valve seat and one water inlet flow channel on the mounting seat. The swing of the valve handle only controls the opening and closing of the water channel.

[0017] As a conventional valve core body structure with both water mixing function (water temperature adjustment function), it includes

[0018] A valve housing, wherein the cold water inlet and the hot water inlet are arranged at the bottom of the valve housing;

[0019] Fixed valve disc, fixed at the bottom of the valve housing;

[0020] The movable valve disc is arranged on the top of the fixed valve disc;

[0021] The rotor is installed in the valve housing and can rotate around its own axis;

[0022] A dial is installed at the bottom of the rotor. The dial can rotate with the rotor and can slide relative to the rotor. The movable valve plate is installed below the dial and can rotate or slide with the dial. The rotation of the movable valve plate is used to adjust the mixing ratio of cold water and hot water. The sliding of the movable valve plate is used to control whether water flows out of the water outlet. In the initial state, the flow rate of the water outlet is zero; the valve handle passes through and is hinged in the through hole of the rotor by a pivot. The lower end of the valve handle is inserted on the dial so that the swing of the valve handle can drive the sliding of the dial.

[0023] The above conventional valve core body is basically similar to the existing water mixing valve core structure, and the specific details of the structure can refer to the existing technology.

[0024] A further improvement is provided by providing a sidewall of the dial with a lateral projection, and a sidewall of the valve housing with a stopper for insertion of the stopper. In the initial position, the stopper is inserted into the stopper to prevent rotation of the dial. This ensures that the valve handle cannot swing in the initial position, and the delayed water discharge function can only be achieved by pressing the push rod in this position.

[0025] Compared with the prior art, the advantage of the mode-switchable time-delay valve core is that the mode of the valve core can be switched between the normal valve core function and the time-delay valve core function.

[0026] When the delayed water outlet mode is required, the valve plate group is in the initial position, no water flows out of the water outlet, the push rod is pressed, the push rod drives the second magnet to move downward, the second magnet forms an upward repulsive force on the first magnet, and the third seal at the lower end of the first magnet opens the pressure relief hole, and the water in the upper pressure chamber is discharged to the water passage chamber through the pressure relief hole. The water pressure in the upper pressure chamber is less than the water pressure in the lower pressure chamber. The water pressure pushes the piston rod upward, the first seal opens the valve port, and water flows through the water inlet flow channel, the bypass flow channel, the valve port, the water passage chamber, the water outlet flow channel, and the water outlet channel and then flows out from the side wall of the valve seat; at the same time, the second magnet moves upward under the action of the spring, and the second magnet forms a downward repulsive force on the first magnet. Combined with the upward movement of the piston rod, the third seal re- When the pressure relief hole is newly closed, water flows out of the valve port and into the upper pressure chamber through the water injection hole. As time goes by, the pressure in the upper pressure chamber gradually increases. The effective area of ​​the piston rod in the upper pressure chamber is larger than the effective area of ​​the piston rod in the lower pressure chamber. Under the same water pressure, the piston rod moves downward under the action of the water pressure in the upper pressure chamber, and the second magnet forms a downward repulsive force on the first magnet, so that the third seal at the lower end of the first magnet always keeps blocking the pressure relief hole until the water passing through the water injection hole fills the upper pressure chamber, the piston rod re-blocks the valve port, and water no longer flows out from the side wall of the valve seat. The delay time depends on the aperture of the water injection hole, that is, the time required to fill the upper pressure chamber.

[0027] When normal water flow mode is required, do not press the push rod, just operate the normal valve core body normally. The operation method is the same as that of a regular faucet.

[0028] The second technical problem to be solved by the present invention is to provide a time-delay faucet with a new structure and capable of switching between a conventional valve core function and a time-delay valve core function in response to the above-mentioned existing technical status.

[0029] The technical solution adopted by the present invention to solve the above-mentioned second technical problem is: a delayed faucet, including a faucet housing and a handle, characterized in that: a delay function valve core with the above-mentioned mode switchable is installed in the faucet housing, the handle is connected to the upper end of the valve handle, and the bottom of the handle has a pressure rib that cooperates with the push rod, and only in the initial position, the pressure rib is aligned with the push rod exposed from the valve seat.

[0030] Compared with existing technologies, this faucet has the following advantages: when the handle is pressed down in the initial position (also known as the 0-degree position), the pressure rib at the bottom of the handle triggers the push rod to move downward, thus achieving delayed water flow. The push rod, under the action of a spring, can drive the handle back to its original position. When the handle is swung left or right, the pressure rib and the push rod are misaligned, and even pressing the handle down will not trigger the push rod to move downward. For normal faucet operation, the handle is swung upward to operate the water normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1Schematic diagram of the three-dimensional structure of the delay function valve core embodiment Figure 1 (initial state);

[0032] Figure 2 Schematic diagram of the three-dimensional structure of the delay function valve core embodiment Figure 2 (initial state);

[0033] Figure 3 It is a cross-sectional view of an embodiment of a valve core with a time-delay function (initial state);

[0034] Figure 4 for Figure 3 AA sectional view;

[0035] Figure 5 for Figure 3 BB cross-sectional view;

[0036] Figure 6 It is a cross-sectional view of an embodiment of a valve core with a time-delay function along the direction of the water outlet flow channel (initial state);

[0037] Figure 7 It is a cross-sectional view of the delay function valve core embodiment along the water outlet channel (delayed water outlet state);

[0038] Figure 8 This is a three-dimensional exploded view of the delay module of the delay function valve core embodiment;

[0039] Figure 9 It is the valve seat in the embodiment of the valve core with a time delay function;

[0040] Figure 10 This is a three-dimensional schematic diagram of the lower housing of the delay function valve core embodiment;

[0041] Figure 11 It is a three-dimensional schematic diagram of an embodiment of a time-delay faucet;

[0042] Figure 12 It is a cross-sectional view of an embodiment of a time-delay faucet. DETAILED DESCRIPTION

[0043] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0044] like Figures 1 to 10 FIG. 1 shows a preferred embodiment of a mode-switchable delay function valve core.

[0045] A mode-switchable time-delay function valve core, comprising

[0046] A conventional valve core body 1 is provided with a water inlet and a water outlet 1c at the bottom. There are two water inlets, namely the cold water inlet 1a and the hot water inlet 1b. The conventional valve core body 1 includes a valve plate group for adjusting the flow of the water outlet 1c and a valve handle 16 for controlling the valve plate group.

[0047] Valve seat 2, the conventional valve core body 1 is installed in the valve core cavity 2d of the valve seat 2, and the valve seat 2 is provided with a water inlet channel and a water outlet channel 2c that pass through the bottom of the valve seat 2. There are two water inlet channels, namely the cold water inlet channel 2a and the hot water inlet channel 2b; the upper end of the cold water inlet channel 2a is connected to the cold water inlet 1a, the upper end of the hot water inlet 1b is connected to the hot water inlet 1b, one end of the water outlet channel 2c is connected to the water outlet 1c, and the other end of the water outlet channel 2c passes through the side wall of the valve seat 2.

[0048] The mounting seat 3 is fixed to the bottom of the valve seat 2. A water inlet channel, a water outlet channel 3c and a mounting cavity 3d are provided in the mounting seat 3. There are two water inlet channels, namely a cold water inlet channel 3a and a hot water inlet channel 3b; the upper end of the cold water inlet channel 3a is connected to the cold water inlet channel 2a, and the upper end of the hot water inlet channel 3b is connected to the hot water inlet channel 2b. The cold water inlet channel 3a is connected to the bottom of the mounting cavity 3d through a bypass channel 3e, and the hot water inlet channel 3b is blocked from the water passage cavity 5a. The upper end of the outlet channel 3c is connected to the outlet channel 2c, and the lower end of the outlet channel 3c is connected to the side of the mounting cavity 3d.

[0049] Delay modules, such as Figure 8As shown, it is arranged in the installation cavity 3d, and the delay module includes a shell 5, a first magnet 6a, a second magnet 6b, a push rod 7, and a spring 4; the shell 5 is provided with a water passage chamber 5a, a piston chamber 5b and a guide chamber 5c, the water passage chamber 5a is connected to the water outlet channel 3c, the piston chamber 5b and the water passage chamber 5a are connected through the valve port 5d, and the piston chamber 5b is connected to the cold water inlet channel 3a through the bypass channel 3e; a piston rod 8 is provided in the piston chamber 5b, and the lower end of the piston rod 8 is provided with a first sealing member 8a for blocking the valve port 5d, and a second sealing member 8b is sleeved on the piston rod 8, and the second sealing member 8b divides the piston chamber 5b into an upper pressure chamber 5b1 and a lower pressure chamber 5b2, and the piston rod 8 is provided with a pressure relief hole 81 connecting the upper pressure chamber 5b1 and the water outlet channel 3c, and a pressure relief hole 82 connecting the upper pressure chamber 5b1 and the water outlet channel 3c. 5b1 and the water injection hole 82 of the lower pressure chamber 5b2; the push rod 7 is constrained in the installation chamber 3d and can move up and down, and the upper end of the push rod 7 is exposed outside the valve seat 2 upward. The first magnet 6a is installed in the guide chamber 5c and can move up and down. The first magnet 6a is cylindrical, and the lower end of the first magnet 6a is provided with a third sealing member 8c for sealing the pressure relief hole 81. The second magnet 6b is annular and is sleeved on the outside of the guide chamber 5c and can move up and down. The second magnet 6b is annular, and the spring 4 is provided below the second magnet 6b and makes the second magnet 6b move up and resist the push rod 7; the second magnet 6b is in the upward position, and the second magnet 6b forms a downward repulsive force on the first magnet 6a. The second magnet 6b moves down to the downward position with the push rod 7, and the second magnet 6b forms an upward repulsive force on the first magnet 6a.

[0050] The mounting base 3 is composed of an upper base body 31 and a lower base body 32 that are buckled together. The top of the push rod 7 has an upwardly extending guide shaft 71 and a trigger shaft 72. The guide shaft 71 is upwardly passed through the first sleeve 7a and installed on the upper base body 31, and the trigger shaft 72 is upwardly passed through the second sleeve 7b and installed on the upper base body 31.

[0051] like Figure 4 As shown, the third sealing member 8c has a dredging needle portion 8c1 extending downwardly and inserted into the water injection hole 82 , and the cross-sectional area of ​​the dredging needle portion 8c1 is smaller than the cross-sectional area of ​​the water injection hole 82 .

[0052] The housing 5 comprises an upper shell 51 and a lower shell 52, which are threaded together. The water passage chamber 5a and the piston chamber 5b are located in the lower shell 52, and the guide chamber 5c is located in the upper shell 51. The second magnet 6b and the spring 4 are mounted on the outside of the upper shell 51. The top of the upper shell 51 has an upwardly protruding guide shaft 511. The guide chamber 5c is located within the guide shaft 511. The second magnet 6b and the spring 4 are mounted on the outside of the guide shaft 511. The bottom of the push rod 7 has a concave clearance chamber 73 into which the guide shaft 511 extends.

[0053] like Figure 10As shown, the lower shell 52 has an axial through hole 521, and the lower part of the axial through hole 521 has a radial connecting portion 522, and a water-passing distance D is formed between the two sides of the connecting portion 522 and the peripheral wall of the axial through hole 521. A concave cavity is provided on the connecting portion 522, and the concave cavity forms the water-passing cavity 5a. The mouth end of the concave cavity forms the valve port 5d. A radial hole 523 is provided on the connecting portion 522, and the hole 523 connects the concave cavity and the water outlet channel 3c.

[0054] The conventional valve core body 1 in this embodiment includes

[0055] The valve housing 11, the cold water inlet 1a and the hot water inlet 1b are arranged at the bottom of the valve housing 11;

[0056] The fixed valve disc 12 is fixed to the bottom of the valve housing 11;

[0057] The movable valve disc 13 is provided on the top of the fixed valve disc 12;

[0058] The rotor 14 is installed in the valve housing 11 and can rotate around its own axis;

[0059] The dial 15 is installed at the bottom of the rotor 14. The dial 15 can rotate with the rotor 14 and can slide relative to the rotor 14. The movable valve plate 13 is installed below the dial 15 and can rotate or slide with the dial 15. The rotation of the movable valve plate 13 is used to adjust the mixing ratio of cold water and hot water. The sliding of the movable valve plate 13 is used to control whether water flows out of the water outlet 1c. In the initial state, the flow rate of the water outlet 1c is zero; the valve handle 16 passes through and is hinged in the through hole of the rotor 14 by a pivot. The lower end of the valve handle 16 is inserted into the dial 15 so that the swing of the valve handle 16 can drive the sliding of the dial 15.

[0060] The side wall of the dial 15 is provided with a side-convex limiting portion 151 , and the side wall of the valve housing 11 is provided with a limiting hole 111 for the limiting portion 151 to be inserted into. In the initial state, the limiting portion 151 is inserted into the limiting hole 111 to prevent the dial 15 from rotating.

[0061] This spool can be switched between normal spool function and time-delay spool function.

[0062] When the delayed water discharge mode is required, the valve plate group is in the initial position, such as Figures 1 to 6 As shown, no water flows out of the water outlet 1c. Pressing the push rod 7 drives the second magnet 6b to move downward. The second magnet 6b forms an upward repulsive force on the first magnet 6a. The third sealing member 8c at the lower end of the first magnet 6a opens the pressure relief hole 81. The water in the upper pressure chamber 5b1 is discharged to the water passage chamber 5a through the pressure relief hole 81. The water pressure in the upper pressure chamber 5b1 is lower than the water pressure in the lower pressure chamber 5b2. The water pressure pushes the piston rod 8 upward. Figure 7As shown, the first sealing member 8a opens the valve port 5d, and water flows out from the side wall of the valve seat 2 after passing through the cold water inlet flow channel 3a, the bypass flow channel 3e, the valve port 5d, the water passage chamber 5a, the water outlet flow channel 3c, and the water outlet channel 2c; at the same time, the second magnet 6b moves upward under the action of the spring 4, and the second magnet 6b forms a downward repulsive force on the first magnet 6a (the principle of magnetic pole repulsion). Combined with the upward movement of the piston rod 8, the third sealing member 8c recloses the pressure relief hole 81. While the water flows out of the valve port 5d, it also flows into the upper pressure chamber 5b1 through the water injection hole 82. As time goes by, the pressure in the upper pressure chamber 5b1 gradually increases, and the piston rod 8 is located in the upper pressure chamber. The effective area of ​​5b1 is larger than the effective area of ​​the piston rod 8 in the lower pressure chamber 5b2. Under the same water pressure, the piston rod 8 moves downward under the action of the water pressure in the upper pressure chamber 5b1. Because the second magnet 6b exerts a downward repulsive force on the first magnet 6a, the third sealing member 8c at the lower end of the first magnet 6a always keeps blocking the pressure relief hole 81 until the water passing through the water injection hole 82 fills the upper pressure chamber 5b1. The third sealing member 8c of the piston rod 8 then reseals the valve port 5d, and water no longer flows out from the side wall of the valve seat 2. The delay time depends on the aperture of the water injection hole 82, that is, the time required to fill the upper pressure chamber 5b1.

[0063] When the normal water outlet mode is required, do not press the push rod 7, just operate the normal valve core body 1 normally, and the operation method is the same as that of a normal faucet.

[0064] like Figure 11 、 12 FIG. 1 shows an embodiment of a time-delay faucet.

[0065] A time-delay faucet comprises a faucet housing 10 and a handle 101. The faucet housing 10 is provided with a mode-switchable time-delay function valve core as described in the aforementioned embodiment. The handle 101 is connected to the upper end of the valve handle 16. The bottom of the handle 101 has a pressure rib 102 that cooperates with the push rod 7. In the initial position, and only in the initial position, the pressure rib 102 is aligned with the push rod 7 exposed outside the valve seat 2.

[0066] When the handle 101 is pressed down in the initial position (also known as the 0-degree position), the handle 101 can be designed into a two-stage structure. This prevents the handle 101 from causing the valve stem to swing. The pressure rib 102 at the bottom of the handle 101 triggers the push rod 7 to move downward, thus achieving delayed water discharge. The push rod 7 can drive the handle 101 to reset under the action of the spring 4. When the handle 101 is swung left and right (to adjust the water temperature), the pressure rib 102 and the push rod 7 are misaligned. Even if the handle 101 is pressed down, it cannot trigger the push rod 7 to move downward. When using the faucet normally, the handle 101 is swung upward to operate the water discharge normally. In fact, other components can also be used to trigger the push rod.

[0067] It should be noted that in the description of this embodiment, the terms "front, rear", "left, right", "up, down", "clockwise", "counterclockwise", etc. indicating directions or positional relationships are all based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. The terms "install", "connect", and "connected" should be understood in a broad sense. For example, they can be fixed connections, detachable connections, or integral connections; they can be directly connected, indirectly connected through an intermediate medium, or they can be internal connections between 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 mode-switchable delay function valve core, including A conventional valve core body (1) is provided with a water inlet and a water outlet (1c) at the bottom, the conventional valve core body (1) comprising a valve plate group for adjusting the flow of the water outlet (1c) and a valve handle (16) for controlling the valve plate group; Its characteristics are: Also includes A valve seat (2), wherein the conventional valve core body (1) is installed in the valve core cavity (2d) of the valve seat (2), and the valve seat (2) is provided with a water inlet channel and a water outlet channel (2c) penetrating the bottom of the valve seat (2), the upper end of the water inlet channel is communicated with the water inlet, one end of the water outlet channel (2c) is communicated with the water outlet (1c), and the other end of the water outlet channel (2c) penetrates the side wall of the valve seat (2); A mounting seat (3) is fixed to the bottom of the valve seat (2), and a water inlet flow channel, a water outlet flow channel (3c) and a mounting cavity (3d) are provided in the mounting seat (3), the upper end of the water inlet flow channel is communicated with the water inlet channel, the side of the water inlet flow channel is communicated with the bottom of the mounting cavity (3d) through a bypass flow channel (3e), the upper end of the water outlet flow channel (3c) is communicated with the water outlet channel (2c), and the lower end of the water outlet flow channel (3c) is communicated with the side of the mounting cavity (3d); A time delay module is provided in the installation cavity (3d), and comprises a housing (5), a first magnet (6a), a second magnet (6b), a push rod (7), and a spring (4); a water passage cavity (5a), a piston cavity (5b), and a guide cavity (5c) are provided in the housing (5); the water passage cavity (5a) is communicated with the water outlet channel (3c); the piston cavity (5b) and the water passage cavity (5a) are communicated with each other through a valve port (5d); and the piston cavity ( 5b) is connected to the bypass flow channel (3e); a piston rod (8) is provided in the piston chamber (5b), a first sealing member (8a) is provided at the lower end of the piston rod (8) for sealing the valve port (5d), a second sealing member (8b) is sleeved on the piston rod (8), and the second sealing member (8b) divides the piston chamber (5b) into an upper pressure chamber (5b1) and a lower pressure chamber (5b2), and a portion is provided on the piston rod (8) to connect the upper pressure chamber (5b1) and the water passage chamber (5b2). a) a pressure relief hole (81) and a water injection hole (82) connecting the upper pressure chamber (5b1) and the lower pressure chamber (5b2); the push rod (7) is constrained in the installation chamber (3d) and can move up and down, the upper end of the push rod (7) is exposed outside the valve seat (2), the first magnet (6a) is installed in the guide chamber (5c) and can move up and down, the lower end of the first magnet (6a) is provided with a third sealing member (8c) for sealing the pressure relief hole (81), the second magnet (6b) is sleeved outside the guide chamber (5c) and can move up and down, the spring (4) is provided below the second magnet (6b) and enables the second magnet (6b) to move upward and resist the push rod (7); the second magnet (6b) is in the upward position, the second magnet (6b) forms a downward repulsive force on the first magnet (6a), the second magnet (6b) moves down to the downward position with the push rod (7), and the second magnet (6b) forms an upward repulsive force on the first magnet (6a).

2. The mode-switchable delay function valve core according to claim 1, characterized in that: The mounting seat (3) is composed of an upper seat body (31) and a lower seat body (32) that are buckled together. The top of the push rod (7) is provided with an upwardly extending guide shaft (71) and a trigger shaft (72). The guide shaft (71) is upwardly penetrated and mounted on the upper seat body (31) through a first shaft sleeve (7a), and the trigger shaft (72) is upwardly penetrated and mounted on the upper seat body (31) through a second shaft sleeve (7b).

3. The mode-switchable delay function valve core according to claim 1, characterized in that: The third sealing member (8c) has a dredging needle portion (8c1) extending downward and inserted into the water injection hole (82), and the cross-sectional area of ​​the dredging needle portion (8c1) is smaller than the cross-sectional area of ​​the water injection hole (82).

4. The mode-switchable delay function valve core according to claim 1, characterized in that: The housing (5) is composed of an upper shell (51) and a lower shell (52) connected together by threads, the water passage chamber (5a) and the piston chamber (5b) are arranged in the lower shell (52), the guide chamber (5c) is arranged in the upper shell (51), and the second magnet (6b) and the spring (4) are sleeved outside the upper shell (51).

5. The mode-switchable delay function valve core according to claim 4, characterized in that: The top of the upper shell (51) is provided with an upwardly protruding guide shaft portion (511), the guide cavity (5c) is arranged in the guide shaft portion (511), the second magnet (6b) and the spring (4) are sleeved outside the guide shaft portion (511), and the bottom of the push rod (7) is provided with a concave clearance cavity (73) for the guide shaft portion (511) to extend into.

6. The mode-switchable delay function valve core according to claim 4, characterized in that: The lower shell (52) has an axial through hole (521), and the lower part of the axial through hole (521) has a radial connecting portion (522). A water flow distance (D) is formed between the two sides of the connecting portion (522) and the peripheral wall of the axial through hole (521). The connecting portion (522) is provided with a concave cavity, which forms the water flow cavity (5a), and the mouth end of the cavity forms the valve port (5d). The connecting portion (522) is provided with a hole (523) that penetrates radially, and the hole (523) communicates with the cavity and the water outlet channel (3c).

7. The mode-switchable delay function valve core according to any one of claims 1 to 6, characterized in that: The conventional valve core body (1) has two water inlets, namely a cold water inlet (1a) and a hot water inlet (1b); the valve seat (2) has two water inlet channels, namely a cold water inlet channel (2a) and a hot water inlet channel (2b); the mounting seat (3) has two water inlet channels, namely a cold water inlet channel (3a) and a hot water inlet channel (3b); wherein the upper end of the cold water inlet channel (2a) is connected to the cold water inlet channel (2a). The water inlet (1a) is connected, the upper end of the hot water inlet (1b) is connected to the hot water inlet (1b), the upper end of the cold water inlet channel (3a) is connected to the cold water inlet channel (2a), the upper end of the hot water inlet channel (3b) is connected to the hot water inlet channel (2b), the cold water inlet channel (3a) is connected to the water passage chamber (5a) through the bypass channel (3e), and the hot water inlet channel (3b) is blocked from the water passage chamber (5a).

8. The mode-switchable delay function valve core according to claim 7, characterized in that: The conventional valve core body (1) comprises A valve housing (11), wherein the cold water inlet (1a) and the hot water inlet (1b) are arranged at the bottom of the valve housing (11); A fixed valve plate (12) is fixed to the bottom of the valve housing (11); A movable valve plate (13) is provided on the top of the fixed valve plate (12); The rotor (14) is installed in the valve housing (11) and can rotate around its own axis; A dial (15) is mounted on the bottom of the rotor (14). The dial (15) can rotate with the rotor (14) and can slide relative to the rotor (14). The movable valve plate (13) is mounted below the dial (15) and can rotate or slide with the dial (15). The rotation of the movable valve plate (13) is used to adjust the mixing ratio of cold water and hot water. The sliding of the movable valve plate (13) is used to control whether the water outlet (1c) discharges water. In the initial state, the flow rate of the water outlet (1c) is zero. The valve handle (16) passes through and is hinged in the through hole of the rotor (14) through a pivot. The lower end of the valve handle (16) is inserted into the dial (15) so that the swing of the valve handle (16) can drive the sliding of the dial (15).

9. The mode-switchable delay function valve core according to claim 8, characterized in that: The side wall of the dial (15) is provided with a side-convex limiting portion (151), and the side wall of the valve housing (11) is provided with a limiting hole (111) for the limiting portion (151) to be inserted. In an initial state, the limiting portion (151) is inserted into the limiting hole (111) to prevent the dial (15) from rotating.

10. A time-delay faucet, comprising a faucet housing (10) and a handle (101), characterized in that: The faucet housing (10) is installed with a mode-switchable delay function valve core as described in any one of claims 1 to 9. The handle (101) is connected to the upper end of the valve handle (16). The bottom of the handle (101) has a pressure rib (102) that cooperates with the push rod (7). In the initial position, and only in the initial position, the pressure rib (102) is aligned with the push rod (7) exposed outside the valve seat (2).

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