Water purifier faucet with knob control

Abstract

The application discloses a water purifier faucet with a rotary knob control, wherein the rotary knob is installed on a rotary knob support and can rotate around a first axis; the rotary knob support is pivotally installed on a display support, the rotary knob can drive the rotary knob support to synchronously rotate around a second axis, and an input shaft of an absolute value encoder is positioned in linkage with the rotary knob support in the circumferential direction; when the rotary knob rotates around the first axis, the rotary knob axially presses the input shaft, so that the input shaft is axially displaced to generate a fluid output control signal, and a control circuit board starts and stops fluid output in response to the fluid output control signal; when the rotary knob rotates around the second axis, the input shaft is synchronously driven to rotate by the rotary knob support to generate a fluid parameter adjustment signal, and the control circuit board controls any one of water temperature and water flow in response to the fluid parameter adjustment signal. The application combines the touch feeling of a traditional rotary knob with electronic control, retains the interactive experience of rotary operation, and realizes accurate electronic control through an encoder.

Description

Technical Field

[0001] This application relates to the field of water purifier faucet technology, specifically to a water purifier faucet with knob control. Background Technology

[0002] As a key component of water purifiers, the faucet's function and user experience directly impact the product's usability. Traditional water purifier faucets primarily use mechanical knobs, adjusting water flow and temperature by rotating or pressing mechanical parts. Their advantages lie in intuitive operation and simple, reliable structure, but they suffer from insufficient intelligence and inability to integrate with the water purifier's control system. This has led to electronic faucets gradually replacing traditional mechanical faucets and becoming the market mainstream. These faucets typically feature touchscreen buttons or sensors, transmitting electrical signals to a control circuit board (PCBA) to switch functions. They support intelligent functions such as switching between room temperature, warm, and hot water, as well as dispensing measured amounts of water and displaying filter life.

[0003] However, existing electronic smart faucets still have some problems in practical applications: for example, because touch screen operation completely abandons the damping feel and gear feedback of traditional mechanical knobs, users lack an intuitive user experience, especially when precise adjustment of water temperature or flow is required. It is difficult to achieve delicate control through the touch screen, resulting in insufficient interactivity. Many users still miss the control feel of mechanical knobs. In addition, touch screen buttons usually use capacitive or resistive sensing principles. When exposed to the humid kitchen environment for a long time, they are prone to short circuits or touch failures due to moisture intrusion, thus reducing structural reliability. Furthermore, if the touch screen surface is subjected to external impact or friction, there is a risk of the glass panel cracking or the touch layer being damaged, resulting in high repair costs.

[0004] To address the aforementioned issues, some existing technologies attempt to integrate simple mechanical buttons into electronic faucets. However, such designs can only achieve simple on / off functions and cannot meet the needs for water flow start / stop, water temperature and flow rate adjustment. Furthermore, the linkage structure between the mechanical button and the electronic control system is complex and difficult to guarantee long-term stability.

[0005] Therefore, there is an urgent need to design a composite faucet that combines the user experience of mechanical knob operation with the advantages of electronic intelligent control. Utility Model Content

[0006] In view of the problems of poor touch screen interactivity, easy damage and limited functionality of existing electronic faucets, this application proposes a water purifier faucet with knob control.

[0007] The technical solution adopted in this application is as follows:

[0008] A water purifier faucet with knob control includes a faucet body and a control circuit board, and further includes a knob, an absolute encoder, a display bracket, and a knob bracket. The knob is mounted on the knob bracket and can rotate relative to the knob bracket about a first axis. The knob bracket is pivotally mounted on the display bracket. The knob can drive the knob bracket to rotate synchronously about a second axis. The input shaft of the absolute encoder is circumferentially positioned and linked with the knob bracket. When the knob rotates about the first axis, it is converted into axial pressing of the input shaft through an internal structure, causing the input shaft to undergo axial displacement to generate a fluid output control signal. The control circuit board responds to the fluid output control signal and starts or stops the fluid output. When the knob rotates about the second axis, it drives the input shaft to rotate synchronously through the knob bracket to generate a fluid parameter adjustment signal. The control circuit board responds to the fluid parameter adjustment signal and controls either the outlet water temperature or the outlet water flow rate.

[0009] In this technical solution, the knob bracket constitutes the structural carrier for the knob's rotation and mounting, while the display bracket constitutes the structural carrier for the knob bracket's pivotal mounting. The knob bracket and the input shaft of the absolute encoder form a circumferential positioning linkage. The knob has a degree of freedom to rotate around a first axis and also a degree of freedom to drive the knob bracket to rotate around a second axis, achieving dual-axis rotation. Therefore, it possesses two independent control functions: when the knob rotates around the first axis, it triggers the axial displacement of the absolute encoder's input shaft, causing it to generate a fluid output control signal, thereby controlling the faucet's fluid output; when the knob rotates around the second axis, it drives the absolute encoder's input shaft to rotate, causing it to generate a fluid parameter adjustment signal, thereby controlling the faucet's output fluid temperature or flow rate. Therefore, the faucet design of this application combines the tactile feedback of a traditional knob with electronic control, retaining the interactive experience of rotary operation while achieving precise electronic control through the absolute encoder. Simultaneously, it reduces or even eliminates the use of the touchscreen, lowering the risk of damage and extending the service life.

[0010] The knob bracket includes a ring-shaped body, which is rotatably mounted on the display bracket. The second axis is the central axis of the ring-shaped body, and the input shaft coaxially passes through the inner side of the ring-shaped body. The knob is rotatably mounted on the ring-shaped body.

[0011] In this technical solution, the ring-shaped main body structure of the knob bracket is defined, so that the second axis coincides with the central axis of the ring body. The ring structure of the ring body facilitates the rotational connection with the display bracket, and the hollow structure of the ring body allows the input shaft to pass through coaxially. This simplifies the structure, improves the convenience of assembly, and the force transmission path during the action transmission process. It ensures that the knob can accurately drive the input shaft displacement when rotating around the first axis and accurately drive the input shaft rotation when rotating around the second axis, thereby improving the signal generation accuracy and simplifying the assembly process.

[0012] The annular body has a positioning part connected to its shaft end. The positioning part has a positioning hole. After the input shaft passes through the inner side of the annular body, it cooperates with the positioning hole through a spline or D-shaped shaft to achieve circumferential positioning linkage with the knob bracket.

[0013] In this technical solution, the input shaft is engaged with the positioning hole of the positioning part through a spline or D-shaped shaft to achieve circumferential positioning linkage between the input shaft and the positioning hole. This ensures that the input shaft can rotate synchronously when the knob bracket rotates around the second axis, avoiding slippage and improving the accuracy of the absolute encoder in detecting the rotation angle, thereby improving the accuracy of water temperature or flow rate regulation.

[0014] The two sides of the annular body extend to form a pivot axis perpendicular to its axis. The inside of the knob is pivotally connected to the pivot axis through a rotating retaining ring. The inside of the knob is provided with a drive rod. The shaft end of the input shaft protrudes outside the positioning hole, forming a force-bearing end that abuts against the drive rod. When the knob rotates around the first axis, it presses the input shaft through the drive rod.

[0015] In this technical solution, the knob is connected to the pivot shaft via a rotating retaining ring. This allows the knob to be easily installed by pressing, facilitating the engagement of the retaining ring and the pivot shaft. Furthermore, the engagement of the retaining ring and the pivot shaft enables the knob and its support to be positioned circumferentially around the second axis, fulfilling the requirement for the knob to drive the support to rotate synchronously around the second axis. The drive rod inside the knob abuts against the force-bearing end of the input shaft, converting the knob's rotational motion into the axial displacement of the input shaft. This achieves a reliable conversion from mechanical action to electrical signal, ensuring the stability of the switch control.

[0016] The knob has a guide groove inside, and the knob bracket has a guide rib that cooperates with the guide groove. The sliding cooperation between the guide rib and the guide groove constrains the rotation path of the knob around the first axis.

[0017] In this technical solution, the cooperation between the guide groove and the guide rib constrains the rotation path of the knob around the first axis, making the rotation action smoother and more directional, avoiding unnecessary shaking or jamming, and improving the user's operating feel and control precision.

[0018] The knob bracket includes an annular body, and the display bracket is provided with a rotating shaft that is rotatably engaged with the inner side of the annular body, so that the second axis is the central axis of the annular body. The rotating shaft limits the axial movement of the annular body, and the annular body is positioned circumferentially with the knob.

[0019] In this technical solution, the display bracket rotates in conjunction with the annular body via a rotating shaft, and the annular body is axially limited. This structural design makes the rotation of the knob bracket more stable and reduces axial movement. At the same time, the positioning of the knob along the circumference of the annular body ensures that the knob can effectively drive the input shaft of the absolute encoder to rotate when rotating around the second axis, thus improving the reliability of the adjustment function.

[0020] The rotating shaft is provided with circumferentially spaced buckles, which engage with the shaft end of the annular body to limit the axial movement of the annular body.

[0021] In this technical solution, the buckle on the rotating shaft engages with the shaft end of the annular body, thereby limiting the axial movement of the annular body and preventing it from spontaneously detaching from the rotating shaft. Furthermore, it simplifies the assembly process of the knob bracket and the display bracket, eliminating the need for additional fasteners, reducing production costs, and ensuring the stability of the assembly structure, effectively preventing the annular body from loosening during long-term use.

[0022] The annular body has circumferentially evenly distributed throttle protrusions on the side facing the display bracket, and the display bracket has throttle recesses that match the throttle protrusions; when the knob rotates around the second axis, the engagement of the throttle protrusions and the throttle recesses generates tactile feedback.

[0023] In this technical solution, the combination of the gear shift protrusion and the gear shift recess allows the knob to rotate, generating tactile feedback that simulates the "click" feel of a mechanical knob. This allows users to clearly perceive the gear shift, providing an operating experience similar to a traditional mechanical knob. It enhances the user's sense of control over the adjustment process, compensates for the lack of physical feedback in electronic knobs, and can also serve as an intuitive reference for water temperature or flow rate adjustment.

[0024] The annular body has a radially extending convex edge, the convex edge has an arc-shaped notch, and the display bracket has a limiting block that extends into the notch. The limiting block restricts the rotation angle range of the knob around the second axis by abutting against both ends of the notch.

[0025] In this technical solution, the rotation angle range of the knob and knob bracket around the second axis is limited by the cooperation of the arc-shaped notch of the convex edge and the limit stop, which avoids excessive rotation that could damage the absolute encoder or internal structure. At the same time, the rotation range can be matched with the actual water temperature or flow rate adjustment range, which improves the safety and rationality of operation.

[0026] The main body of the faucet includes a bottom shell and a top cover. The control circuit board, the absolute encoder and the display bracket are arranged sequentially from bottom to top inside the bottom shell. The top cover is provided with mounting holes. The knob bracket is partially exposed in the mounting holes. The top cover is provided with outwardly protruding ring ribs around the mounting holes. The ring ribs are clearance-fitted with the knob to limit the rotation angle of the knob around the first axis.

[0027] In this technical solution, the circuit board, absolute encoder, and display bracket are arranged sequentially from bottom to top inside the bottom shell, resulting in a compact and simple assembly structure that is easy to install. The ring rib of the top cover is fitted with the knob with a clearance, providing ample space for the knob to rotate around the first axis, while also limiting the rotation angle of the knob around the first axis to prevent structural damage due to excessive rotation. Attached Figure Description

[0028] 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:

[0029] Figure 1 An axonometric view of a water purifier faucet with knob control provided in an embodiment of this application;

[0030] Figure 2 Cross-sectional view of a water purifier faucet with knob control provided in an embodiment of this application. Figure 1 ;

[0031] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0032] Figure 4 Cross-sectional view of a water purifier faucet with knob control provided in an embodiment of this application. Figure 2 It shows the state after the knob is rotated upwards;

[0033] Figure 5 This is a top view of a water purifier faucet with knob control provided in an embodiment of this application, wherein the dashed lines represent the two extreme positions of the knob rotating about a second axis;

[0034] Figure 6 A schematic diagram of the structure of the knob bracket provided in the embodiments of this application. Figure 1 ;

[0035] Figure 7 A schematic diagram of the structure of the knob bracket provided in the embodiments of this application. Figure 2 ;

[0036] Figure 8This is a schematic diagram of the structure of the knob provided in the embodiment of this application;

[0037] Figure 9 This is a schematic diagram of the structure of the display bracket provided in the embodiment of this application;

[0038] Figure 10 for Figure 9 Enlarged view at point B in the middle;

[0039] Figure 11 This is an assembly drawing of the knob and knob bracket provided in the embodiments of this application;

[0040] Figure 12 This is an assembly diagram of the control circuit board and absolute encoder provided in the embodiments of this application;

[0041] Figure 13 This is an assembly diagram of the display bracket and absolute encoder provided in the embodiments of this application;

[0042] Figure 14 This is an assembly diagram of the display bracket, absolute encoder, and knob bracket provided in the embodiments of this application;

[0043] Figure 15 for Figure 14 Enlarged view at point C;

[0044] Figure 16 This is a schematic diagram of the structure of the dragon head body provided in the embodiment of this application.

[0045] List of components and reference numerals:

[0046] 1. Faucet body, 11. Bottom shell, 12. Top cover, 121. Mounting hole, 122. Ring rib;

[0047] 2. Control circuit board;

[0048] 3 knobs, 31 rotating retaining rings, 32 drive rods, 33 guide grooves;

[0049] 4 absolute encoders, 41 input axes;

[0050] 5 Display bracket, 51 Rotating shaft, 511 Buckle, 52 Position recess, 53 Limit block;

[0051] 6. Knob bracket, 61. Ring-shaped body, 611. Gear position protrusion, 612. Protruding edge, 613. Arc-shaped notch, 62. Positioning part, 621. Positioning hole, 63. Pivot shaft, 64. Guide rib. Detailed Implementation

[0052] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] In the embodiments of this application, reference is made to Figures 1 to 16 As shown, a water purifier faucet with knob control is provided. For ease of explanation and understanding, the following descriptions are based on the illustrated product structure. Of course, those skilled in the art will understand that the above structure is merely a specific example and illustrative illustration, and does not constitute a specific limitation on the technical solution provided in this application. The water purifier faucet provided in this application can be applied to any suitable water purifier. Naturally, if necessary, the water purifier faucet provided in this application can also be applied to other suitable devices.

[0058] Example 1:

[0059] like Figure 1 , Figure 2 and Figure 3 As shown, the water purifier faucet includes a faucet body 1, a control circuit board 2, a knob 3, an absolute encoder 4, a display bracket 5, and a knob bracket 6. The knob 3 is mounted on the knob bracket 6 and can rotate relative to the knob bracket 6 around a first axis. The knob bracket 6 is pivotally mounted on the display bracket 5. The knob 3 can drive the knob bracket 6 to rotate synchronously around a second axis. The input shaft 41 of the absolute encoder 4 is circumferentially positioned and linked with the knob bracket 6. When the knob 3 rotates around the first axis, it is converted into axial pressing of the input shaft 41 through an internal structure, causing the input shaft 41 to undergo axial displacement to generate a fluid output control signal. The control circuit board 2 responds to the fluid output control signal and starts or stops the fluid output. When the knob 3 rotates around the second axis, it drives the input shaft 41 to rotate synchronously through the knob bracket 6 to generate a fluid parameter adjustment signal. The control circuit board 2 responds to the fluid parameter adjustment signal and controls any one of the parameters, either the outlet water temperature or the outlet water flow rate.

[0060] Regarding the structure of the faucet body 1, it can be designed as a structure with a cavity. Components such as the control circuit board 2, absolute encoder 4, and display bracket 5 can be integrated into the cavity, while the knob 3 is located on the outside of the faucet body 1 for user operation. In addition to serving as the structural carrier for the pivotal mounting of the knob bracket 6, the display bracket 5 of this application can also have other functions, such as mounting a display screen for displaying information such as water temperature and flow rate. The control circuit board 2 and absolute encoder 4 can be any type known in the art or that may appear in the future, as long as they can achieve the control required by this application. At least the following can be included: after the knob 3 is pressed and the input shaft 41 is displaced axially downward, the absolute encoder 4 detects the displacement of the input shaft 41 and sends a water outflow signal to the control circuit board 2 to control the water purifier valve to open the water flow. When the knob 3 is rotated again, the input shaft 41 can be reset under the action of the elastic element set inside the absolute encoder 4, and a water stop signal is sent. When the input shaft 41 rotates circumferentially, the absolute encoder 4 converts the rotation angle into a digital signal (such as 0-1024 bit encoding). The control circuit board 2 adjusts the power of the water purifier heating module (water temperature adjustment) or the opening degree of the flow valve (flow adjustment) according to the signal value. At the same time, the display screen on the display bracket 5 synchronously displays the current parameters. As for the control of water temperature adjustment and flow adjustment, the control can be given to the user. For example, a function selection button can be set on the water purifier or faucet, and the water temperature or flow can be selectively adjusted by using a set program. Regarding the design of the first and second axes, to meet ergonomic design requirements and the usage habits of most users, the first and second axes can be made perpendicular in space. It should be noted that this application only illustrates the structure of the faucet relevant to the subject matter of this solution; other components are not shown. In feasible implementations, the faucet may also include other components to... Figure 2 Taking the embodiment shown as an example, the faucet body 1 can also be equipped with water supply pipes, water outlets and other structures inside, using water supply pipes and water outlets to isolate the water flow from internal components such as control circuit boards, absolute encoders 4, and displays, to ensure electrical safety.

[0061] In this application, the knob bracket 6 constitutes the structural carrier for mounting and rotating the knob 3, and the display bracket 5 constitutes the structural carrier for pivotally mounting the knob bracket 6. The knob bracket 6 and the input shaft 41 of the absolute encoder 4 form a circumferential positioning linkage. The knob 3 has a degree of freedom to rotate around the first axis, and also has a degree of freedom to drive the knob bracket 6 to rotate around the second axis, realizing dual-axis rotation, thus possessing two independent control functions: Figure 4 The illustrated embodiment shows the knob 3 rotated upwards and lifted about the first axis. Figure 2The illustrated embodiment shows the state of the knob 3 after it is rotated downward around the first axis and reset. When it is rotated upward and lifted, it can be set to trigger the axial displacement of the input shaft 41 of the absolute encoder 4, so that it generates a fluid output control signal and then controls the faucet to control the fluid output. Figure 5 The illustrated embodiment depicts the knob 3 rotating left and right around the second axis. This rotation indirectly drives the input shaft 41 of the absolute encoder 4 to rotate, generating a fluid parameter adjustment signal, which in turn controls the water temperature or flow rate output from the faucet. Therefore, the faucet design of this application combines the tactile feedback of the traditional knob 3 with electronic control. It retains the interactive experience of rotary operation while achieving precise electronic control through the absolute encoder 4. Simultaneously, it reduces or even eliminates the use of the touchscreen, lowers the risk of damage, and extends the service life.

[0062] Regarding the structure of the knob support 6, in a preferred example, such as Figure 3 , Figure 6 , Figure 14 and Figure 15 As shown, the knob bracket 6 includes an annular body 61, which is rotatably mounted on the display bracket 5. The second axis is the central axis of the annular body 61. The input shaft 41 coaxially passes through the inner side of the annular body 61, and the knob 3 is rotatably mounted on the annular body 61. The structure of the annular body 61 of the knob bracket 6 ensures that the second axis coincides with the central axis of the annular body 61, and the knob 3 drives the knob bracket 6 to rotate around its own central axis. In specific implementations, a shaft-type structure rotatably connected to the inner circumferential surface of the annular body 61 can be provided on the display bracket 5, or a cylindrical structure rotatably connected to the outer circumferential surface of the annular body 61 can be provided on the display bracket 5. In this embodiment, the annular structure of the annular body 61 facilitates a rotatable connection with the display bracket 5, and the hollow structure of the annular body 61 allows the input shaft 41 to pass through coaxially. This simplifies the structure, improves the ease of assembly, and streamlines the force transmission path during the action transmission process. It ensures that the knob 3 can accurately drive the input shaft 41 to displacement when rotating around the first axis and accurately drive the input shaft 41 to rotate when rotating around the second axis, thereby improving the signal generation accuracy and simplifying the assembly process.

[0063] Furthermore, such as Figure 6 , Figure 12 , Figure 14 and Figure 15As shown, a positioning part 62 is connected to the shaft end of the annular body 61. The positioning part 62 has a positioning hole 621. After the input shaft 41 passes through the inner side of the annular body 61, it engages with the positioning hole 621 via a D-shaped shaft to achieve circumferential positioning linkage with the knob bracket 6. Specifically, the cross-section of the input shaft 41 is designed as a D-shaped structure, and the positioning hole 621 is designed as a D-shaped hole structure. During installation, when the knob bracket 6 is installed on the display bracket 5, the input shaft 41 first passes through the annular body 61 and then inserts into the positioning hole 621, achieving circumferential positioning linkage between the input shaft 41 and the positioning hole 621. This ensures that when the knob bracket 6 rotates around the second axis, the input shaft 41 can rotate synchronously, avoiding slippage and improving the accuracy of the absolute encoder 4 in detecting the rotation angle, thereby improving the accuracy of water temperature or flow rate regulation. In addition to the D-shaped shaft engagement, other suitable alternative solutions can be used between the input shaft 41 and the positioning hole 621. For example, the input shaft 41 and the positioning hole 621 can be engaged via a spline.

[0064] In this embodiment, regarding the connection method between the knob 3 and the knob bracket 6, and the structure of the knob 3 for driving the displacement of the input shaft 41, in a preferred example, such as... Figure 3 , Figure 6 , Figure 8 and Figure 11 As shown, the two sides of the annular body 61 extend to form pivot shafts 63 perpendicular to its axis. The inside of the knob 3 is pivotally connected to the pivot shafts 63 through rotating retaining rings 31. The inside of the knob 3 is provided with a drive rod 32. The shaft end of the input shaft 41 protrudes outside the positioning hole 621, forming a force-bearing end that abuts against the drive rod 32. When the knob 3 rotates around the first axis, it presses the input shaft 41 through the drive rod 32. Pivoting shafts 63 are provided on both sides of the annular body 61, and rotating retaining rings 31 can be correspondingly provided on both sides inside the knob 3. The central axis of the pivot shaft 63 forms the first axis. The rotating retaining rings 31 are provided with notches for the pivot shafts 63 to be engaged. The knob 3 can be installed by pressing the rotating retaining rings 31 and the pivot shafts 63, which improves the ease of installation. After the rotating retaining rings 31 and the pivot shafts 63 are engaged, the end of the pivot shafts 63 can be set to abut against the inner surface of the knob 3, thereby limiting the knob 3 along the axis of the pivot shafts 63. Furthermore, the engagement of the rotating retaining ring 31 and the pivot shaft 63 enables the circumferential positioning of the knob 3 and the knob support 6 around the second axis, satisfying the requirement that the knob 3 drives the knob support 6 to rotate synchronously around the second axis. The drive rod 32 inside the knob 3 abuts against the force-bearing end of the input shaft 41, converting the rotational motion of the knob 3 into the axial displacement of the input shaft 41, realizing a reliable conversion from mechanical action to electrical signal, and ensuring the stability of the switch control.

[0065] Example 2:

[0066] The structure and principle of this embodiment 2 are basically the same as those of embodiment 1, except that: Figure 6 and Figure 8 As shown, the knob 3 has a guide groove 33 inside, and the knob support 6 has a guide rib 64 that cooperates with the guide groove 33. The sliding fit between the guide rib 64 and the guide groove 33 constrains the rotation path of the knob 3 around the first axis. Specifically, the guide groove 33 can be formed inside the knob 3 by symmetrically arranged ribs, and the guide rib 64 is formed by the outward protrusion of the annular body 61 of the knob support 6. After the knob 3 is engaged with the pivot shaft 63 by rotating the retaining ring 31, the guide groove 33 and the guide rib 64 are always in a sliding fit state, which constrains the rotation path of the knob 3 around the first axis, making the rotation action smoother and more directional, avoiding unnecessary shaking or jamming, and improving the user's operating feel and control precision. In addition, the stop fit on both sides of the guide groove 33 and the guide rib 64 also improves the stability of the positioning linkage of the knob 3 and the knob support 6 around the second axis, reducing the risk of damage to the retaining ring 31 and the pivot shaft 63.

[0067] Example 3:

[0068] The structure and principle of this embodiment 3 are basically the same as those of embodiments 1 and 2, except that: Figure 9 , Figure 10 , Figure 13 , Figure 14 and Figure 15 As shown, based on the design of the knob bracket 6 including the annular body 61, the display bracket 5 can be provided with a rotating shaft 51 rotatably engaged with the inner side of the annular body 61, so that the second axis is the central axis of the annular body 61 and also the central axis of the rotating shaft 51. The rotating shaft 51 axially limits the annular body 61, and the annular body 61 is positioned circumferentially with the knob 3. The display bracket 5 rotatably engages with the annular body 61 through the rotating shaft 51 and axially limits the annular body 61. This structural design makes the rotation of the knob bracket 6 more stable and reduces axial movement. At the same time, the circumferential positioning of the annular body 61 with the knob 3 ensures that when the knob 3 rotates around the second axis, it can effectively drive the input shaft 41 of the absolute encoder 4 to rotate, improving the reliability of the adjustment function. In the combination of Embodiment 1 and Embodiment 3, since the input shaft 41 of the absolute encoder 4 needs to pass through the annular body 61, in order to avoid the rotation shaft 51 interfering with the input shaft 41 in space, the rotation shaft 51 can be set to have a shaft hole structure, which satisfies the cooperation with the annular body 61 and allows the input shaft 41 to pass through the shaft hole to achieve the cooperation with the positioning hole 621.

[0069] In a preferred example, such as Figure 1 ,and Figure 15As shown, the rotating shaft 51 is provided with circumferentially spaced latches 511, which engage with the shaft end of the annular body 61 to axially limit the annular body 61. The latches 511 on the rotating shaft 51 engage with the shaft end of the annular body 61, achieving axial limitation of the annular body 61 and preventing the annular body 61 from spontaneously detaching from the rotating shaft 51. Furthermore, this simplifies the assembly process of the knob bracket 6 and the display bracket 5, eliminating the need for additional fasteners, reducing production costs, and ensuring the stability of the assembly structure, effectively preventing the annular body 61 from loosening during long-term use. In addition, based on the scheme in Embodiment 1 where the shaft end of the annular body 61 is connected to the positioning part 62, a gap needs to be reserved between the shaft end of the annular body 61 and the positioning part 62 for the latches 511 to engage with the annular body 61, to avoid spatial interference caused by misalignment of the positioning mechanism.

[0070] In a preferred example, such as Figure 7 and Figure 10 As shown, the annular body 61 has circumferentially evenly distributed gear shift protrusions 611 on the side facing the display bracket 5, and the display bracket 5 has gear shift recesses 52 that match the gear shift protrusions 611. When the knob 3 rotates around the second axis, the engagement of the gear shift protrusions 611 and the gear shift recesses 52 produces tactile feedback. In this example, the engagement of the gear shift protrusions 611 and the gear shift recesses 52 causes the knob 3 to rotate, generating tactile feedback, simulating the "click" feel of a mechanical knob 3. This allows the user to clearly perceive the adjustment gear, providing an operating experience similar to a traditional mechanical knob 3, enhancing the user's control over the adjustment process, compensating for the lack of physical feedback in electronic knobs 3, and also serving as an intuitive reference for water temperature or flow rate adjustment.

[0071] In a preferred example, such as Figure 6 , Figure 10 and Figure 15 As shown, the annular body 61 has a radially extending protruding edge 612, and the protruding edge 612 has an arc-shaped notch 613. The display bracket 5 has a limiting block 53 that extends into the notch. The limiting block 53 limits the rotation angle range of the knob 3 around the second axis by abutting against both ends of the notch. Figure 5Taking the left-right rotation scheme of knob 3 around the second axis as an example, when knob 3 is rotated to the left to its limit position, the left end face of the notch abuts against the limit stop 53; when knob 3 is rotated to the right to its limit position, the right end face of the notch abuts against the limit stop 53. The notch's position relative to the limit stop 53 can be set to the maximum or minimum value of the outlet water temperature or flow rate, and correspondingly, the notch's position relative to the limit stop 53 can be set to the minimum or maximum value of the outlet water temperature or flow rate. In this example, the arc-shaped notch 613 of the convex edge 612, in conjunction with the limit stop 53, limits the rotation angle range of knob 3 and knob support 6 around the second axis, preventing excessive rotation from damaging the absolute encoder 4 or its internal structure. Simultaneously, it matches the rotation range with the actual water temperature or flow rate adjustment range, improving operational safety and rationality.

[0072] Example 4:

[0073] The structure and principle of this embodiment 4 are basically the same as those of embodiments 1-3, except that: Figure 2 , Figure 4 and Figure 16 As shown, the faucet body 1 includes a bottom shell 11 and a top cover 12. The control circuit board 2, absolute encoder 4, and display bracket 5 are arranged sequentially from bottom to top within the bottom shell 11. The top cover 12 has mounting holes 121, with a portion of the knob bracket 6 exposed outside the mounting holes 121. The top cover 12 has outwardly protruding ribs 122 surrounding the mounting holes 121. The ribs 122 are clearance-fitted with the knob 3 to limit the rotation angle of the knob 3 around the first axis. In this technical solution, the control circuit board 2, absolute encoder 4, and display bracket 5 are arranged sequentially from bottom to top within the bottom shell 11, resulting in a compact and simple assembly structure and convenient installation. The ring rib 122 of the upper cover 12 is fitted with the knob 3 with a clearance, providing space for the knob 3 to rotate around the first axis. At the same time, it can also limit the rotation angle of the knob 3 around the first axis to prevent structural damage due to excessive rotation. Specifically, when the knob 3 rotates upward around the first axis to the position of abutting the ring rib 122, it reaches the limit position where the maximum water flow can be opened. When rotating downward to reset, the abutting limit between the drive rod 32 and the input shaft 41 or other suitable methods can be used to limit the excessive rotation and downward movement of the knob 3. In a preferred example, the area enclosed by the ring rib 122 can be adapted to the protruding edge 612 of the annular body 61. During assembly, the control circuit board 2 and the absolute encoder 4 can be pre-installed. At this time, the rotation shaft 51 of the display bracket 5 passes through the mounting hole 121, and the input shaft 41 of the absolute encoder 4 passes through the rotation shaft 51. Then, the bottom shell 11 and the upper cover 12 are fitted together, and the knob bracket 6 is installed from the outside of the faucet body 1 into the mounting hole 121. Finally, the knob 3 is installed on the knob bracket 6. Preferably, the bottom shell 11 and the top cover 12 can be detachably connected by clips or screws for maintenance.

[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 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 principle of this application should be included within the scope of the claims of this application.

Claims

1. A water purifier faucet with knob control, comprising a faucet body and a control circuit board, characterized in that, It also includes a knob, an absolute encoder, a display bracket, and a knob bracket. The knob is mounted on the knob bracket and can rotate relative to the knob bracket about a first axis. The knob bracket is pivotally mounted on the display bracket. The knob can drive the knob bracket to rotate synchronously about a second axis. The input shaft of the absolute encoder is circumferentially positioned and linked with the knob bracket. When the knob rotates around the first axis, it is converted into an axial press on the input shaft through an internal structure, causing the input shaft to undergo axial displacement to generate a fluid output control signal. The control circuit board responds to the fluid output control signal and starts or stops the fluid output. When the knob rotates around the second axis, the input shaft is driven to rotate synchronously through the knob bracket to generate a fluid parameter adjustment signal. The control circuit board responds to the fluid parameter adjustment signal and controls either the outlet water temperature or the outlet water flow rate.

2. The water purifier faucet with knob control according to claim 1, characterized in that, The knob bracket includes a ring-shaped body, which is rotatably mounted on the display bracket. The second axis is the central axis of the ring-shaped body, and the input shaft coaxially passes through the inner side of the ring-shaped body. The knob is rotatably mounted on the ring-shaped body.

3. The water purifier faucet with knob control according to claim 2, characterized in that, The annular body has a positioning part connected to its shaft end. The positioning part has a positioning hole. After the input shaft passes through the inner side of the annular body, it cooperates with the positioning hole through a spline or D-shaped shaft to achieve circumferential positioning linkage with the knob bracket.

4. The water purifier faucet with knob control according to claim 3, characterized in that, The two sides of the annular body extend to form a pivot axis perpendicular to its axis. The inside of the knob is pivotally connected to the pivot axis through a rotating retaining ring. The inside of the knob is provided with a drive rod. The shaft end of the input shaft protrudes outside the positioning hole, forming a force-bearing end that abuts against the drive rod. When the knob rotates around the first axis, it presses the input shaft through the drive rod.

5. The water purifier faucet with knob control according to claim 1, characterized in that, The knob has a guide groove inside, and the knob bracket has a guide rib that cooperates with the guide groove. The sliding cooperation between the guide rib and the guide groove constrains the rotation path of the knob around the first axis.

6. The water purifier faucet with knob control according to claim 1, characterized in that, The knob bracket includes an annular body, and the display bracket is provided with a rotating shaft that is rotatably engaged with the inner side of the annular body, so that the second axis is the central axis of the annular body. The rotating shaft limits the axial movement of the annular body, and the annular body is positioned circumferentially with the knob.

7. The water purifier faucet with knob control according to claim 6, characterized in that, The rotating shaft is provided with circumferentially spaced buckles, which engage with the shaft end of the annular body to limit the axial movement of the annular body.

8. The water purifier faucet with knob control according to claim 6, characterized in that, The annular main body has circumferentially evenly distributed paving protrusions on the side facing the display bracket, and the display bracket has paving recesses that match the paving protrusions. When the knob rotates around the second axis, the engagement of the gear shift protrusion and the gear shift recess produces tactile feedback.

9. The water purifier faucet with knob control according to claim 6, characterized in that, The annular body has a radially extending convex edge, the convex edge has an arc-shaped notch, and the display bracket has a limiting block that extends into the notch. The limiting block restricts the rotation angle range of the knob around the second axis by abutting against both ends of the notch.

10. The water purifier faucet with knob control according to any one of claims 1-9, characterized in that, The main body of the faucet includes a bottom shell and a top cover. The control circuit board, the absolute encoder and the display bracket are arranged sequentially from bottom to top inside the bottom shell. The top cover is provided with mounting holes. The knob bracket is partially exposed in the mounting holes. The top cover is provided with outwardly protruding ring ribs around the mounting holes. The ring ribs are clearance-fitted with the knob to limit the rotation angle of the knob around the first axis.

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