A faucet water purifier

Abstract

The application discloses a faucet water purifier, which comprises a filter element and a waterway switching valve assembly. The waterway switching valve assembly comprises a valve body and an operating element. The valve body is provided with a water inlet, a purified water flow channel and a raw water flow channel. The purified water flow channel is communicated with the filter element. An axially displaceable valve core is arranged in the valve body. The operating element is provided with a driving protrusion, which has a driving surface. The operating element can swing back and forth relative to the valve body between a raw water position and a purified water position, so as to change the contact position of the valve core on the driving surface, and then the valve core is axially displaced. When the valve core is axially displaced along a first direction, the communication path between the water inlet and the purified water flow channel is closed, and the communication path between the water inlet and the raw water flow channel is synchronously opened. When the operating element is axially displaced in the reverse direction of the first direction, the communication path between the water inlet and the raw water flow channel is closed, and the communication path between the water inlet and the purified water flow channel is synchronously opened. The faucet water purifier of the application converts the swing of the operating element into the linear movement of the valve core, and is more labor-saving and compact in structure.

Description

Technical Field

[0001] This application relates to the technical field of tap water purification equipment, specifically to a faucet water purifier. Background Technology

[0002] Faucet water purifiers, as small water purification devices installed directly on faucets, are widely popular due to their ease of installation and flexible use. Existing faucet water purifiers typically offer two water output modes: purified water and raw water, allowing users to switch between them according to their needs.

[0003] Traditional water path switching structures have some shortcomings in achieving the switching between purified and raw water modes. For example, some water purifiers use knob-type switching valves, changing the water flow path by rotating the knob. After long-term use, the rotating sealing surface is prone to leaks due to wear, leading to mixing of purified and raw water and affecting water quality. Moreover, operation often requires rotation of more than 180°, demanding significant force and resulting in a poor user experience. Some faucet water purifiers use push-button switching valves, switching between raw and purified water modes by pressing a button. This structure requires a mechanism to keep the button stationary after being pressed and another to reset it upon pressing again, making it complex and increasing the risk of damage. Another type of faucet water purifier uses a swing valve core. Specifically, raw water and purified water inlets are set on a single valve body plane. The valve core swings directly to open and close the inlets, either opening the raw water inlet and simultaneously closing the purified water inlet, or vice versa, thus achieving water path switching. However, the valve core and the flow channel are not in perpendicular contact, resulting in low and uneven contact pressure and poor sealing effect. Moreover, the valve core requires a large space to swing, making it difficult to adapt to compact faucet water purifiers.

[0004] Therefore, there is a need for a faucet water purifier that is simple in structure, easy to operate, reliable in switching, has good sealing performance, and a reasonable layout, in order to solve the problems existing in the above-mentioned prior art. Utility Model Content

[0005] The purpose of this application is to provide a faucet water purifier that, by improving the structural design of the water circuit switching valve assembly, enables reliable switching between purified water and raw water modes, while optimizing the overall layout and improving ease of operation and stability of use.

[0006] The technical solution adopted in this application is as follows:

[0007] A faucet-mounted water purifier includes a filter element and a water path switching valve assembly. The water path switching valve assembly includes a valve body and an operating component. The valve body has a water inlet, a purified water channel, and a raw water channel. The purified water channel is connected to the filter element. An axially displaceable valve core is installed inside the valve body. The operating component has a driving protrusion with a driving surface. The operating component can swing back and forth relative to the valve body between a raw water setting and a purified water setting to change the contact position of the valve core on the driving surface, thereby causing the valve core to move axially. When the valve core moves axially in a first direction, it closes the connection between the water inlet and the purified water channel and simultaneously opens the connection between the water inlet and the raw water channel. When the operating component moves axially in the opposite direction of the first direction, it closes the connection between the water inlet and the raw water channel and simultaneously opens the connection between the water inlet and the purified water channel.

[0008] In this technical solution, a valve core with axial displacement, in conjunction with an operating component having a driving protrusion, enables rapid switching between raw water and purified water. When the operating component swings towards the raw water setting, the valve core moves axially in a first direction, cutting off the purified water flow path and opening the raw water flow path, allowing water to be discharged directly without passing through the filter element. When the operating component swings towards the purified water setting, the valve core moves axially in the opposite direction, cutting off the raw water flow path and opening the purified water flow path, allowing water to be purified by the filter element before use. This design simplifies the mechanical structure of water circuit switching, improves the convenience and reliability of operation, and ensures the mutual exclusivity of the two water circuit states, avoiding water mixing. The design utilizes the oscillation of the operating component to convert the axial displacement of the valve core for water circuit switching. Compared to existing knob switching or valve core oscillation solutions, only a small-angle reciprocating motion (e.g., 15°-60°) is needed to complete the full stroke of the valve core, resulting in higher transmission efficiency and less effort in operation. The rotary seal of a knob is prone to circumferential leakage due to long-term wear, while the oscillating operating component causes the valve core to only make axial linear movements. The valve core axially seals the flow channel, and the sealing surface is always perpendicular to the flow channel opening, resulting in uniform contact pressure and uniform force on the sealing surface, reducing the leakage rate and extending the service life. Moreover, the pure axial movement of the valve core results in a smaller movement space and a more compact fit between the valve core and valve body, which is conducive to the miniaturization of water purifiers.

[0009] Along the swing direction of the operating component, the height of the driving surface continuously increases from one end to the other; when the valve core contacts the lowest point of the driving surface, it corresponds to one of the raw water setting and the purified water setting, and when the valve core contacts the highest point of the driving surface, it corresponds to the other of the raw water setting and the purified water setting.

[0010] In this technical solution, the driving surface is designed with a continuously increasing height from one end to the other, making it a smooth inclined or curved surface. During the oscillation process, the operating component can smoothly push the valve core axially. This gradual driving structure reduces mechanical resistance during operation, reduces component wear, extends the service life of the water circuit switching valve assembly, and provides a more refined operating feel.

[0011] When the valve core contacts the highest point of the driving surface, the normal of the contact area between the driving surface and the valve core is parallel to the axis of the valve core.

[0012] In this technical solution, when the valve core contacts the highest point of the drive surface, the normal direction of the contact area between the drive surface and the valve core is parallel to the axial direction of the valve core. This design allows the driving force of the operating element on the valve core to be converted into the axial displacement of the valve core to the greatest extent, reducing the generation of lateral force, ensuring that the valve core can be stably maintained at the highest point of the drive surface, eliminating the risk of valve core skew, jamming or abnormal reset caused by the component force, and improving the reliability of the switching action.

[0013] The faucet water purifier includes an upper housing and a lower housing. The upper housing and the lower housing cooperate to form a water circuit switching cavity that accommodates the valve body and a filter cavity that accommodates the filter element. The cavity wall of the water circuit switching cavity is provided with a guide slide extending along the swing direction of the operating member. The operating member includes an arc-shaped wall that adapts to the guide slide. The driving protrusion protrudes from the inner side of the arc-shaped wall.

[0014] In this technical solution, the water switching chamber and filtration chamber formed by the cooperation of the upper and lower shells provide a reasonable spatial layout for the entire water purifier, enabling the orderly integration of various functional components. The cooperation between the guide slide and the arc-shaped wall of the operating component provides precise trajectory guidance for the swing of the operating component, ensuring that the operating component can accurately switch between the raw water setting and the purified water setting.

[0015] The guide slide is provided with a first baffle and a second baffle at its two opposite ends. The first baffle stops the arc-shaped wall and limits it to the raw water position, and the second baffle stops the arc-shaped wall and limits it to the purified water position.

[0016] In this technical solution, the first and second baffles at both ends of the guide slide limit the extreme positions of the operating component in the raw water and purified water settings, respectively, preventing water circuit switching failure due to excessive oscillation of the operating component. This mechanical limiting structure provides clear operational feedback, allowing users to intuitively perceive that the operating component has reached the target setting, while ensuring the accurate displacement of the valve core in both settings. This guarantees the reliability and stability of water circuit switching and avoids leakage or mixing problems caused by improper operation.

[0017] The bottom wall of the lower housing is provided with a ring rib around the bottom of the valve body, and a shower hole is provided in the area enclosed by the ring rib. The raw water flow channel drains through the shower hole. The operating component includes a guide ring connected to the arc-shaped wall. The guide ring is pivotally sleeved on the ring rib, so that the operating component swings back and forth around the ring rib.

[0018] In this technical solution, the showerhead holes are designed to discharge raw water in a showerhead-like pattern, resulting in a more aesthetically pleasing water pattern and easily generating dense bubbles, thus enhancing flushing power. The showerhead holes are positioned within the area enclosed by the ring ribs, utilizing the ribs' water-blocking effect to facilitate the collection and discharge of raw water, optimizing the water pattern. The ring ribs, in conjunction with the guide ring of the operating component, form a pivoting structure, allowing the operating component to smoothly swing back and forth around the ring ribs.

[0019] Along the swing direction of the operating member, the arc-shaped wall is provided with spaced upper protrusions, which abut against the upper housing through the upper protrusions; and / or, along the swing direction of the operating member, the guide ring is provided with spaced lower protrusions, which abut against the ring rib through the lower protrusions.

[0020] In this technical solution, point contact reduces the frictional area between the operating component and the upper and lower housings, thereby reducing friction during the swinging process and making the water circuit switching operation smoother. It also reduces noise and wear caused by friction. The spaced protrusions provide elastic support, keeping the operating component stable during swinging and preventing shaking and jamming, thus improving the user experience.

[0021] The faucet water purifier includes a decorative shell that surrounds the sides of the upper and lower shells. The decorative shell is provided with a clearance slide. An operating lever is installed on the arc-shaped wall and passes through the clearance slide to form a force-bearing part for external force to operate the swing of the operating component.

[0022] In this technical solution, the decorative shell not only enhances the appearance of the faucet water purifier but also protects its internal structure. The coordination between the avoidance slide and the operating lever provides users with an intuitive and easy-to-use interface, allowing external force to be accurately transmitted to the operating components via the lever, thus achieving water circuit switching. This external operating structure conforms to ergonomic principles, allowing users to operate it without opening the shell. Simultaneously, the decorative shell's isolation reduces the impact of external factors on the internal water circuit switching mechanism, improving the water purifier's durability and reliability.

[0023] The purified water channel includes a filter inlet and a filter outlet, and the raw water channel includes a raw water inlet and a raw water outlet. The filter inlet and the raw water inlet are arranged opposite each other. The valve core includes a rod and a sealing body fitted onto the rod. The valve core causes the sealing body to open one of the filter inlet and the raw water inlet and simultaneously close the other by axial displacement.

[0024] In this technical solution, the design of the filter inlet and the raw water inlet facing each other allows the valve core to simultaneously control the opening and closing states of both inlets during axial displacement, achieving synchronous switching of the water circuit. The combined structure of the rod body and the sealing body provides reliable sealing performance, ensuring that no water leakage occurs during switching. This symmetrical inlet layout and synchronous control mechanism simplifies the movement trajectory and control logic of the valve core, reduces manufacturing difficulty and cost, and improves the response speed and accuracy of water circuit switching.

[0025] The rod is connected to the valve body via an elastic element. One of the driving surface and the elastic element is used to drive the valve core to move axially in the first direction, and the other is used to drive the valve core to move axially in the opposite direction of the first direction.

[0026] In this technical solution, the elastic element provides the valve core with an automatic reset function. When the operating element acts as the force source for driving the valve core displacement, the valve core compresses the elastic element to store energy; when the operating element removes the driving force on the valve core and swings, the elastic element releases energy to drive the valve core to reset. This elastic reset mechanism reduces the complexity of user operation, makes the water circuit switching process smoother, and ensures the stability and accuracy of the valve core during the reset process. The buffering effect of the elastic element can also absorb the impact force during operation, reduce mechanical damage between components, and extend the service life of the water purifier. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0028] Figure 1 This is an exploded view of the faucet water purifier provided in the embodiments of this application;

[0029] Figure 2 Assembly of the faucet water purifier provided in the embodiments of this application Figure 1 ;

[0030] Figure 3 Assembly of the faucet water purifier provided in the embodiments of this application Figure 2 ;

[0031] Figure 4Cross-sectional view of the faucet water purifier provided in the embodiments of this application. Figure 1 It shows the state of the operating component in the raw water position;

[0032] Figure 5 Cross-sectional view of the faucet water purifier provided in the embodiments of this application. Figure 2 It shows the state of the operating component in the raw water position;

[0033] Figure 6 Cross-sectional view of the faucet water purifier provided in the embodiments of this application. Figure 3 It indicates the flow path of raw water discharged through the raw water channel when the operating component is in the raw water position;

[0034] Figure 7 Cross-sectional view of the faucet water purifier provided in the embodiments of this application. Figure 4 It indicates the state of the control element in the water purification setting;

[0035] Figure 8 Cross-sectional view of the faucet water purifier provided in the embodiments of this application. Figure 5 It indicates the state of the control element in the water purification setting;

[0036] Figure 9 Cross-sectional view of the faucet water purifier provided in the embodiments of this application. Figure 6 It indicates the flow path of raw water through the water purification channel towards the filter element when the operating component is in the water purification setting;

[0037] Figure 10 A schematic diagram of the structure of the operating component provided in the embodiments of this application. Figure 1 ;

[0038] Figure 11 A schematic diagram of the structure of the operating component provided in the embodiments of this application. Figure 2 ;

[0039] Figure 12 This is a schematic diagram of the lower housing structure provided in an embodiment of this application;

[0040] Figure 13 Assembly drawings of the upper and lower housings provided in embodiments of this application;

[0041] Figure 14 This is an assembly drawing of the upper housing, lower housing, operating component, and operating lever provided in the embodiments of this application;

[0042] Figure 15 Assembly of the faucet water purifier provided in the embodiments of this application Figure 3 ;

[0043] Figure 16This is a schematic diagram of the structure of the operating lever provided in the embodiment of this application;

[0044] Figure 17 This is a schematic diagram of the valve core structure provided in the embodiments of this application;

[0045] Figure 18 This is a cross-sectional view of the valve body provided in an embodiment of this application.

[0046] List of components and reference numerals:

[0047] 1. Filter element;

[0048] 2 Valve body, 21 Water inlet, 22 Clean water flow channel, 221 Filter inlet, 222 Filter outlet, 23 Raw water flow channel, 231 Raw water inlet, 232 Raw water outlet;

[0049] 3. Operating component, 31. Driving protrusion, 32. Driving surface, 33. Arc-shaped wall, 34. Guide ring, 35. Upper protrusion, 36. Lower protrusion, 37. Locking hole;

[0050] 4. Valve core; 41. Rod body; 42. Sealing body;

[0051] 51 Upper housing, 52 Lower housing, 521 Ring rib, 522 Shower hole, 53 Guide slide, 54 First baffle, 55 Second baffle;

[0052] 6 decorative shells, 61 clearance tracks;

[0053] 7. Operation lever; 71. Flexible latch;

[0054] 8. Helical springs;

[0055] 9. Cover. Detailed Implementation

[0056] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0057] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0058] Furthermore, it should be understood in the description of this application that the terms "upper," "lower," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "lateral," and "longitudinal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0059] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0060] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0061] In the embodiments of this application, reference is made to Figures 1 to 18 As shown, a faucet-mounted water purifier is provided. For ease of explanation and understanding, the following content provided in this application is based on the illustrated product structure. Of course, those skilled in the art will understand that the above structure is only a specific example and illustrative illustration, and does not constitute a specific limitation on the technical solution provided in this application.

[0062] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 10As shown, the faucet water purifier includes a filter element 1 and a water path switching valve assembly. The water path switching valve assembly includes a valve body 2 and an operating component 3. The valve body 2 has an inlet 21, a purified water channel 22, and a raw water channel 23. The purified water channel 22 is connected to the filter element 1. An axially displaceable valve core 4 is installed inside the valve body 2. The operating component 3 has a driving protrusion 31 with a driving surface 32. The operating component 3 can swing back and forth relative to the valve body 2 between the raw water setting and the purified water setting to change the contact position of the valve core 4 on the driving surface 32, thereby causing the valve core 4 to undergo axial displacement. When the valve core 4 is axially displaced along the first direction, the connection path between the inlet 21 and the purified water channel 22 is closed, and the connection path between the inlet 21 and the raw water channel 23 is opened simultaneously. When the operating component 3 is axially displaced in the opposite direction of the first direction, the connection path between the inlet 21 and the raw water channel 23 is closed, and the connection path between the inlet 21 and the purified water channel 22 is opened simultaneously. Figure 5 The bidirectional arrow X represents the reciprocating swing direction of the operating component 3, and the unidirectional arrow Y represents the first direction. To facilitate connection to a faucet, connectors, nuts, and other structures for connecting to the faucet can be installed at the inlet 21 of the valve body 2.

[0063] In this application, a valve core 4 capable of axial displacement cooperates with an operating member 3 having a driving protrusion 31 to achieve rapid switching between raw water and purified water. When the operating member 3 swings towards the raw water setting, the valve core 4 moves axially in the first direction, cutting off the purified water flow channel 22 and opening the raw water flow channel 23, allowing water to be discharged directly without passing through the filter element 1; when the operating member 3 swings towards the purified water setting, the valve core 4 moves axially in the opposite direction of the first direction, cutting off the raw water flow channel 23 and opening the purified water flow channel 22, allowing water to be purified by the filter element 1 before use. Figure 4 , Figure 5 and Figure 6 As shown, valve core 4 closes the connection between inlet 21 and clean water channel 22, and opens the connection between inlet 21 and raw water channel 23. At this time, operating element 3 is in the raw water position. Figure 6 The arrows in the diagram illustrate the fluid path of water entering from inlet 21 and then being discharged directly along the original water channel 23; for example... Figure 7 , Figure 8 and Figure 9 As shown, valve core 4 opens the connection between inlet 21 and purified water channel 22, and closes the connection between inlet 21 and raw water channel 23. At this time, operating element 3 is in the purified water setting. Figure 9 The arrows in the diagram illustrate the fluid path of water flowing from the inlet 21 along the purified water channel 22 toward the filter element 1, and finally being filtered by the filter element 1 to produce purified water for discharge.

[0064] This design simplifies the mechanical structure of water circuit switching, improves the convenience and reliability of operation, and ensures the mutual exclusivity of the two water circuit states, avoiding water mixing. The design utilizes the swing of the operating element 3 to convert it into the axial displacement of the valve core 4 to achieve water circuit switching. Compared to existing knob switching or valve core swing solutions, only a small-angle reciprocating motion (e.g., 15°-60°) is needed to complete the full stroke displacement of the valve core 4, resulting in higher transmission efficiency and less effort in operation. Existing rotary knobs are prone to circumferential leakage due to long-term wear, while the swing operating element 3 causes the valve core 4 to only perform axial linear displacement. The valve core 4 axially seals the flow channel, and the sealing surface is always perpendicular to the flow channel opening, resulting in uniform contact pressure and uniform force on the sealing surface, reducing leakage rate and extending service life. Moreover, the pure axial movement of the valve core 4 results in a smaller movement space, and the valve core 4 and valve body 2 fit together more compactly, which is beneficial for the miniaturization of the water purifier.

[0065] As a preferred embodiment of this application, such as Figure 5 , Figure 8 and Figure 10 As shown, along the swing direction of the operating member 3, the height of the driving surface 32 continuously increases from one end to the other; when the valve core 4 contacts the lowest point of the driving surface 32, it corresponds to one of the raw water setting and the purified water setting; when the valve core 4 contacts the highest point of the driving surface 32, it corresponds to the other of the raw water setting and the purified water setting. The attached figures specifically illustrate an embodiment where the valve core 4 contacts the lowest point of the driving surface 32 corresponding to the purified water setting and the valve core 4 contacts the highest point of the driving surface 32 corresponding to the raw water setting; in embodiments not shown, the valve core 4 can also contact the lowest point of the driving surface 32 corresponding to the raw water setting and the valve core 4 contacts the highest point of the driving surface 32 corresponding to the purified water setting, simply by designing the internal water passage of the valve body 2 accordingly. In the illustrated embodiment, the operating member 3 swings towards the raw water setting, causing the driving surface 32 to drive the valve core 4 to move, with the valve core 4 sliding from the lowest point to the highest point of the driving surface 32; conversely, when the operating member 3 swings towards the purified water setting, the valve core 4 slides from the highest point to the lowest point of the driving surface 32. In this embodiment, by designing the driving surface 32 as a structure with continuously increasing height from one end to the other, making it a smooth inclined or curved surface (the figure shows an embodiment where the driving surface 32 is a smooth curved surface), the operating member 3 can smoothly push the valve core 4 axially through the driving surface 32 during the swinging process. This gradual drive structure reduces mechanical resistance during operation, reduces component wear, extends the service life of the water circuit switching valve assembly, and provides a more refined operating feel.

[0066] Furthermore, when the valve core 4 contacts the highest point of the drive surface 32, the normal of the contact area between the drive surface 32 and the valve core 4 is parallel to the axis of the valve core 4. This design allows the driving force of the operating element 3 on the valve core 4 to be converted into the axial displacement of the valve core 4 to the greatest extent, reducing the generation of lateral force components. This ensures that the valve core 4 can be stably maintained at the highest point of the drive surface 32, eliminating the risk of valve core 4 deflection, jamming, or abnormal reset caused by force components, and improving the reliability of the switching action. Preferably, one end of the valve core 4 used to contact the drive surface 32 can be set as a spherical surface. By forming a point contact with the drive surface 32 through the spherical surface, on the one hand, the frictional resistance between the valve core 4 and the drive surface 32 can be reduced, making the swing of the operating element 3 and the axial displacement of the valve core 4 smoother and more fluid. On the other hand, when the valve core 4 contacts the highest point of the drive surface 32, the point contact design makes the normal of the contact area between the drive surface 32 and the valve core 4 directly coincide with the axis of the valve core 4 (e.g., Figure 3 As shown by the dashed line Z (which represents the line where the normal of the contact area between the drive surface 32 and the valve core 4 coincides with the axis of the valve core 4), the force transmission effect is optimized, and the stability is further improved.

[0067] As a preferred embodiment of this application, such as Figures 1 to 4 as well as Figure 10 , Figure 13 and Figure 14 As shown, the faucet water purifier includes an upper housing 51 and a lower housing 52. The upper housing 51 and the lower housing 52 cooperate to form a water circuit switching chamber that accommodates the valve body 2 and a filter chamber that accommodates the filter element 1. The wall of the water circuit switching chamber is provided with a guide slide 53 extending along the swing direction of the operating member 3. The operating member 3 includes an arc-shaped wall 33 adapted to the guide slide 53, and a driving protrusion 31 protrudes from the inner side of the arc-shaped wall 33. In this technical solution, the water circuit switching chamber and the filter chamber formed by the cooperation of the upper housing 51 and the lower housing 52 provide a reasonable spatial layout for the entire water purifier, enabling the orderly integration of various functional components. Specifically, the water circuit switching chamber and the filter chamber can be arranged side by side in the transverse direction, with one side used for water circuit switching and the other side used for raw water filtration, making the overall structure of the water purifier simple, convenient for installation, and ensuring that the filter element 1 and the valve body 2 are installed without interference. The cooperation between the guide slide 53 and the arc-shaped wall 33 of the operating component 3 provides precise trajectory guidance for the swing of the operating component 3, ensuring that the operating component 3 can accurately switch between the raw water setting and the purified water setting. Regarding the structure of the guide slide 53, a lower notch can be provided at the lower edge of the upper housing 51, and an upper notch can be provided at the upper edge of the lower housing 52. The lower and upper notches correspond in structure and position. When the upper housing 51 and the lower housing 52 are properly engaged, the lower and upper notches form the guide slide 53, and the arc-shaped wall 33 of the operating component 3 is confined between the upper and lower notches. In a preferred embodiment, the upper housing 51 and the lower housing 52 can be detachably engaged by means of snap-fit, screws, etc., for easy maintenance. In a preferred embodiment, such as... Figure 1 , Figure 2 and Figure 4 As shown, to facilitate filter element replacement, a removable cover 9 can be installed on the upper housing 51. The cover 9 is threaded into the upper housing 51. After the cover 9 is removed from the upper housing 51, the filter element can be replaced.

[0068] As a preferred embodiment of this implementation, such as Figure 5 , Figure 8 and Figure 13 As shown, the guide slide 53 has a first baffle 54 and a second baffle 55 at its two opposite ends. The first baffle 54 stops the arc-shaped wall 33 at the raw water position, and the second baffle 55 stops the arc-shaped wall 33 at the clean water position. Specifically, taking the aforementioned guide slide 53 composed of a lower notch and an upper notch as an example, the wall structures on the same side of the lower and upper notches together form the first baffle 54, and the wall structures on the other side together form the second baffle 55. The first baffle 54 and the second baffle 55 at both ends respectively limit the extreme positions of the operating member 3 at the raw water position and the clean water position, preventing the water circuit switching failure caused by excessive swinging of the operating member 3. This mechanical limiting structure provides clear operational feedback, allowing the user to intuitively perceive that the operating member 3 has reached the target position, while ensuring the accurate displacement of the valve core 4 at both positions, ensuring the reliability and stability of water circuit switching, and avoiding leakage or mixing problems caused by improper operation.

[0069] As a preferred embodiment of this implementation, such as Figure 7 , Figure 10 , Figure 11 and Figure 12As shown, the bottom wall of the lower housing 52 is provided with a ring rib 521 surrounding the bottom of the valve body 2, and a shower hole 522 is provided in the area enclosed by the ring rib 521. The raw water flow channel 23 drains water through the shower hole 522. The operating component 3 includes a guide ring 34 connected to the arc-shaped wall 33. The guide ring 34 is pivotally fitted on the ring rib 521, allowing the operating component 3 to swing back and forth around the ring rib 521. In this technical solution, the setting of the shower hole 522 makes the raw water discharged in the form of shower water, which is more aesthetically pleasing and also easily produces dense bubbles, improving the flushing ability. The shower hole 522 is set in the area enclosed by the ring rib 521. Utilizing the water-blocking effect of the ring rib 521, it is beneficial to gather the raw water for discharge and optimize the water pattern. The ring rib 521 and the guide ring 34 of the operating component 3 cooperate to form a pivot structure, allowing the operating component 3 to swing back and forth smoothly around the ring rib 521. During installation, the guide ring 34 needs to be fitted onto the bottom of the valve body 2 beforehand, and then the upper housing 51 and the lower housing 52 are assembled. During the assembly process, the arc-shaped wall 33 of the operating component 3 is correspondingly limited within the guide slide 53 formed by the lower notch and the upper notch, and the guide ring 34 is correspondingly pivoted on the ring rib 521, thereby limiting the upper and lower limits, radial limits, and circumferential swing range of the operating component 3.

[0070] In a preferred example, such as Figure 10 As shown, along the swing direction of the operating member 3, the arc-shaped wall 33 is provided with spaced upper protrusions 35, which abut against the upper housing 51; in another preferred example, as Figure 11 As shown, along the swing direction of the operating component 3, the guide ring 34 is provided with spaced lower protrusions 36, which abut against the ring rib 521. The upper protrusion 35 forms point contact with the upper housing 51, and the lower protrusion 36 forms point contact with the ring rib 521. This point contact reduces the friction area between the operating component 3 and the upper housing 51 and the lower housing 52, respectively, thereby reducing the friction force during the swing of the operating component 3, making the water circuit switching operation smoother, and reducing noise and wear caused by friction. The spaced protrusions also provide a certain degree of elastic support, keeping the operating component 3 stable during the swing, avoiding shaking and jamming, and improving the user's operating experience.

[0071] As a preferred embodiment of this implementation, such as Figure 1 , Figure 2 , Figure 15As shown, the faucet water purifier includes a decorative shell 6, which surrounds the sides of the upper shell 51 and the lower shell 52. The decorative shell 6 has a clearance slide 61, and an operating lever 7 is installed on the arc-shaped wall 33. The operating lever 7 passes through the clearance slide 61 to form the force-bearing part for the external force to operate the swinging of the operating component 3. In this technical solution, the decorative shell 6 not only beautifies the appearance of the faucet water purifier but also protects the internal structure. The cooperation between the clearance slide 61 and the operating lever 7 provides users with an intuitive and easy-to-operate interface, allowing external force to be accurately transmitted to the operating component 3 through the operating lever 7 to achieve water circuit switching. This external operating structure conforms to ergonomic principles, allowing users to operate without opening the shell. At the same time, the isolation provided by the decorative shell 6 reduces the impact of external factors on the internal water circuit switching mechanism, improving the durability and reliability of the water purifier. More preferably, the upper and lower surfaces of the clearance slide 61 are spaced apart from the operating lever 7, so that the upper and lower surfaces of the clearance slide 61 do not generate frictional resistance to the swing of the operating lever 7, making the swing of the operating component 3 smoother, reducing wear on the operating lever 7, and extending its service life. The operating lever 7 can be integrally formed with the arc-shaped wall 33, or it can be processed separately and then installed. Figure 10 and Figure 16 In the embodiment shown, an example is shown where the end of the operating lever 7 is provided with an elastic buckle 71 and the arc-shaped wall 33 is provided with a locking hole 37. The operating lever 7 can be locked in the locking hole 37 by the elastic buckle 71, so as to achieve detachable installation.

[0072] As a preferred embodiment of this application, such as Figure 6 , Figure 9 , Figure 17 and Figure 18As shown, the purified water channel 22 includes a filter inlet 221 and a filter outlet 222, and the raw water channel 23 includes a raw water inlet 231 and a raw water outlet 232. The filter inlet 221 and the raw water inlet 231 are arranged opposite each other. The valve core 4 includes a rod 41 and a sealing body 42 (such as a silicone sealing ring) fitted onto the rod 41. The valve core 4 opens one of the filter inlet 221 and the raw water inlet 231 and simultaneously closes the other by axial displacement of the sealing body 42. In this technical solution, the design of the filter inlet 221 and the raw water inlet 231 being arranged opposite each other allows the valve core 4 to simultaneously control the opening and closing states of the two inlets during axial displacement, realizing synchronous switching of the water circuit. The combined structure of the rod 41 and the sealing body 42 provides reliable sealing performance, ensuring no leakage occurs during switching. When the valve core 4 moves in the first direction, the rod 41 drives the sealing body 42 to disengage from the raw water inlet 231, ultimately sealing the filter inlet 221. When the valve core 4 moves in the opposite direction, the rod 41 drives the sealing body 42 to disengage from the filter inlet 221, ultimately sealing the raw water inlet 231. This symmetrical inlet layout and synchronous control mechanism simplifies the movement trajectory and control logic of the valve core 4, reduces manufacturing difficulty and cost, and improves the response speed and accuracy of water circuit switching. Specifically, the raw water outlet 232 can be positioned directly above the center of the shower hole 522, so that the raw water outlet 232 is perpendicular to the shower hole 522, optimizing the water pattern.

[0073] Furthermore, such as Figure 1 , Figure 5 and Figure 8 As shown, the rod 41 is connected to the valve body 2 via an elastic element (an embodiment where the elastic element is a helical spring 8 is shown in the figure). One of the driving surface 32 and the elastic element is used to drive the valve core 4 to move axially in a first direction, and the other is used to drive the valve core 4 to move axially in the opposite direction of the first direction. In the illustrated embodiment, when the operating element 3 swings towards the raw water setting, the driving surface 32 drives the valve core 4 to move, and the valve core 4 slides from the lowest point to the highest point of the driving surface 32, compressing the helical spring 8 to store energy. When the operating element 3 swings towards the purified water setting, the valve core 4 slides from the highest point to the lowest point of the driving surface 32, and simultaneously, the helical spring 8 releases energy to drive the valve core 4 to reset. The helical spring 8 provides the valve core 4 with an automatic reset function. This elastic reset mechanism reduces the complexity of user operation, makes the water circuit switching process smoother, and ensures the stability and accuracy of the valve core 4 during the reset process. The buffering effect of the helical spring 8 can also absorb the impact force during operation, reduce mechanical damage between components, and extend the service life of the water purifier.

[0074] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0075] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0076] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A faucet-mounted water purifier, comprising a filter element and a water path switching valve assembly, the water path switching valve assembly comprising a valve body and an operating component, the valve body having a water inlet, a purified water flow channel, and a raw water flow channel, the purified water flow channel being connected to the filter element, characterized in that, The valve body is equipped with an axially displaceable valve core. The operating member is provided with a driving protrusion and a driving surface. The operating member can swing back and forth relative to the valve body in the raw water setting and the purified water setting to change the contact position of the valve core on the driving surface, thereby causing the valve core to undergo axial displacement. When the valve core is axially displaced in the first direction, the connection between the water inlet and the clean water channel is closed, and the connection between the water inlet and the raw water channel is opened simultaneously. When the operating component moves axially in the opposite direction of the first direction, it closes the connection path between the water inlet and the raw water channel, and simultaneously opens the connection path between the water inlet and the purified water channel.

2. The faucet water purifier according to claim 1, characterized in that, Along the swing direction of the operating member, the height of the driving surface continuously increases from one end to the other. When the valve core contacts the lowest point of the drive surface, it corresponds to one of the raw water setting and the purified water setting; when the valve core contacts the highest point of the drive surface, it corresponds to the other of the raw water setting and the purified water setting.

3. The faucet water purifier according to claim 2, characterized in that, When the valve core contacts the highest point of the driving surface, the normal of the contact area between the driving surface and the valve core is parallel to the axis of the valve core.

4. The faucet water purifier according to claim 1, characterized in that, The faucet water purifier includes an upper housing and a lower housing. The upper housing and the lower housing cooperate to form a water circuit switching cavity that accommodates the valve body and a filter cavity that accommodates the filter element. The cavity wall of the water circuit switching cavity is provided with a guide slide extending along the swing direction of the operating member. The operating member includes an arc-shaped wall that adapts to the guide slide. The driving protrusion protrudes from the inner side of the arc-shaped wall.

5. The faucet water purifier according to claim 4, characterized in that, The guide slide is provided with a first baffle and a second baffle at its two opposite ends. The first baffle stops the arc-shaped wall and limits it to the raw water position, and the second baffle stops the arc-shaped wall and limits it to the purified water position.

6. The faucet water purifier according to claim 4, characterized in that, The bottom wall of the lower housing is provided with a ring rib around the bottom of the valve body, and a shower hole is provided in the area enclosed by the ring rib. The raw water flow channel drains through the shower hole. The operating component includes a guide ring connected to the arc-shaped wall. The guide ring is pivotally sleeved on the ring rib, so that the operating component swings back and forth around the ring rib.

7. The faucet water purifier according to claim 6, characterized in that, Along the swing direction of the operating member, the arc-shaped wall is provided with spaced-apart upper protrusions, which abut against the upper housing; and / or, Along the swing direction of the operating component, the guide ring is provided with spaced lower protrusions, which abut against the ring rib.

8. The faucet water purifier according to claim 4, characterized in that, The faucet water purifier includes a decorative shell that surrounds the sides of the upper and lower shells. The decorative shell is provided with a clearance slide. An operating lever is installed on the arc-shaped wall and passes through the clearance slide to form a force-bearing part for external force to operate the swing of the operating component.

9. The faucet water purifier according to claim 1, characterized in that, The purified water channel includes a filter inlet and a filter outlet, the raw water channel includes a raw water inlet and a raw water outlet, the filter inlet and the raw water inlet are arranged opposite to each other, and the valve core includes a rod and a sealing body sleeved on the rod. The valve core causes the sealing body to open one of the filter inlet and the raw water inlet and simultaneously close the other by axial displacement.

10. The faucet water purifier according to claim 9, characterized in that, The rod is connected to the valve body via an elastic element. One of the driving surface and the elastic element is used to drive the valve core to move axially in the first direction, and the other is used to drive the valve core to move axially in the opposite direction of the first direction.

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