Faucet control mechanism

Abstract

This utility model discloses a faucet control structure. Addressing the problems of unreliable safety locks in existing single-handle water faucets, cumbersome operation and lack of safety locks in double-handle faucets, and complex structures, this control structure includes a faucet body, a valve core, a bracket, a handle assembly, a reset assembly, and a track groove structure. The faucet body has a limiting notch, the bracket is fixed to the faucet body via a limiting boss, the bushing of the handle assembly can move axially along the valve core stem, driving the first boss to move within the track groove, the reset assembly achieves reset via a torsion spring and a spring, and the track groove structure limits the handle's rotation angle. This utility model, through a single-handle integrated hot and cold water control, a mechanical limiting safety lock, and a dual reset assembly design, achieves improved convenience and safety in switching between hot and cold water. This structure is suitable for faucets in washbasins, kitchens, and other scenarios, effectively avoiding the risk of children accidentally touching and scalding themselves, simplifying the operation process, and improving structural stability.

Description

Technical Field

[0001] This utility model relates to the field of bathroom equipment technology. More specifically, this utility model relates to a control structure for a faucet. Background Technology

[0002] In daily life and with existing technology, the operating mechanism of a water purifier faucet has the following problems:

[0003] Although some single-hot water taps are equipped with safety locks, they are mostly implemented through damping springs. The spring force needs to take into account the user experience, resulting in insufficient reliability of the safety lock function and difficulty in effectively preventing children from accidentally turning on the hot water.

[0004] Faucets with hot and cold water switching functions usually have a dual-handle design, requiring separate operation of the hot and cold water handles, which is cumbersome and lacks a reliable safety lock structure. Children can directly rotate the handle to turn on the hot water, posing a risk of scalding.

[0005] In addition, the dual-handle structure has more parts, making installation and maintenance complex and taking up more space.

[0006] In the existing technology, there is a lack of a faucet control mechanism that can achieve integrated control of hot and cold water through a single handle and provide a reliable safety lock function through mechanical structure design, making it difficult to achieve a balance between ease of operation and safety of use. Summary of the Invention

[0007] One objective of this utility model is to provide a control structure for a faucet, comprising:

[0008] The faucet body has an internal cavity for installing the valve core, and a limiting notch is provided on the faucet body.

[0009] The valve core, whose stem is used to control the flow of water and the switching between hot and cold water;

[0010] The bracket is fixed to the faucet body and has a limiting protrusion that cooperates with the limiting notch of the faucet body to restrict the movement of the bracket.

[0011] A handle assembly includes a handle and a bushing. The bushing is fitted onto the valve stem of the valve core and can move relative to it along its axial direction. The handle is fixed to the bushing, and the bushing is provided with a first boss.

[0012] The reset assembly includes a reset block, a torsion spring, and a spring. The reset block is connected to the bracket via the torsion spring, and the spring abuts against the bushing and the faucet body. Each reset block is provided with a second protrusion.

[0013] The track groove structure includes two communicating track grooves respectively provided in the bracket and the faucet body, a second boss installed in one of the track grooves, a first boss installed in the other track groove and movable toward one track groove, and the track grooves restrict the angle of rotation of the handle.

[0014] Preferably, the bracket is provided with positioning holes and the reset block is provided with positioning grooves;

[0015] One end of the torsion spring is inserted into the positioning hole, and the other end is inserted into the positioning groove, which is used to drive the reset block to reset.

[0016] Preferably, the first boss has a corresponding hole, and the second boss is inserted into the corresponding hole, so that the bushing drives the reset block to move synchronously.

[0017] Preferably, the corresponding hole of the second boss and the bushing is a clearance fit.

[0018] Preferably, the spring is used to push the bushing and handle back to the initial position after the handle is released.

[0019] Preferably, the spring has positioning protrusions at both ends, and the bottom of the bushing and the top of the faucet body have grooves that fit the positioning protrusions.

[0020] Preferably, the bracket is locked to the faucet body by a nut, forming a fixed support structure to limit the movement trajectory of the reset block and bushing.

[0021] Preferably, it also includes multiple screws for securing the reset block and the spring.

[0022] Preferably, the mechanical linkage structure between the handle, bushing, and reset block includes:

[0023] When in cold water, when the handle is in the initial position, the bushing is located in the first area of ​​the track groove, and the first boss and the second boss are separated. When the handle moves away from the operator to the limit position, the bushing drives the valve core through the valve stem to keep the cold water passage open.

[0024] When the hot water is running, the handle must first be pushed in a straight line along the valve stem axis to move the bushing from the first area of ​​the track groove to the second area corresponding to the second boss and engage. Then, when the handle is rotated towards the operator, the engagement structure between the bushing and the reset block drives the valve core to switch to the hot water passage. After the handle is released, the torsion spring drives the reset block to reset, and the spring pushes the bushing back to the first area, so that the handle and the valve core return to their initial positions synchronously.

[0025] Preferably, a limiting step is provided between the first and second regions of the track groove.

[0026] This utility model has at least the following beneficial effects:

[0027] First, this utility model uses a track groove structure in conjunction with a reset component (torsion spring, spring) to form a hot water activation logic of "axial push + rotation": the handle must be pushed first to engage the first boss of the bushing with the second boss of the reset block (the track groove restricts the movement path), and then the handle is rotated to switch to hot water. This avoids the safety lock failure problem caused by the weakening of the elasticity of the traditional damping spring and effectively prevents children from accidentally touching the hot water by simply rotating the handle.

[0028] Secondly, this utility model uses a dual reset design of torsion spring (drive reset block) and spring (push bushing) to synchronously drive each component back to the initial position after the handle is released, avoiding the handle remaining in the hot water on state and eliminating the safety hazard caused by failure to reset.

[0029] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0030] Figure 1 An exploded view of a faucet according to one of the technical solutions of this utility model;

[0031] Figure 2 This is a side view of a faucet in one state, representing one technical solution of this utility model.

[0032] Figure 3 This is a side view of another state of the faucet, which is one of the technical solutions of this utility model.

[0033] Figure 4 This is a side sectional view of the bracket according to one of the technical solutions of this utility model;

[0034] Figure 5 This is a side view of the bracket according to one of the technical solutions of this utility model.

[0035] Figure 6 This is a side view of the reset block according to one of the technical solutions of this utility model;

[0036] Figure 7 This is a side view of the bushing structure of one of the technical solutions of this utility model.

[0037] Figure 8 This is a side view of the reset block according to one of the technical solutions of this utility model.

[0038] The markings in each of the attached figures are as follows:

[0039] 1. Faucet body; 2. Valve core; 3. Bracket; 4. Nut; 5. Torsion spring; 6. Reset block; 7. Spring; 8. Bushing; 9. Screw; 10. Handle; 11. Second boss; 12. First boss; 13. Limiting boss. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0041] It should be noted that, unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the reagents and materials are commercially available unless otherwise specified. In the description of this utility model, the orientation or positional relationship indicated by the terms is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. It does 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, and therefore should not be construed as a limitation of this utility model.

[0042] like Figures 1-8 As shown, this utility model provides a control structure for a faucet, including:

[0043] The faucet body 1 has a cavity inside for installing the valve core 2, and the faucet body 1 has a limiting notch; specifically, the cavity size of the faucet body 1 can be designed according to the specifications of the valve core 2 to adapt to different models of valve core 2. The limiting notch of the faucet body 1 can be set at the top or side to cooperate with the limiting boss 13 of the bracket 3 to restrict the lateral movement of the bracket 3.

[0044] Valve core 2, whose valve stem is used to control the flow of water and the switching between hot and cold water; specifically, valve core 2 can be a ceramic valve core 2 or a copper valve core 2 commonly available on the market. Ceramic valve core 2 has the characteristics of wear resistance and corrosion resistance, while copper valve core 2 has better strength and processing performance. The valve stem of valve core 2 controls the water flow by rotating or sliding to realize the switching between hot and cold water and the flow rate regulation.

[0045] The bracket 3 is fixed to the faucet body 1. The bracket 3 is provided with a limiting boss 13, which cooperates with the limiting notch of the faucet body 1 to restrict the movement of the bracket 3. Specifically, the bracket 3 can be fixed to the top of the faucet body 1 by screws 9 or nuts 4. The height of the limiting boss 13 can match the depth of the limiting notch of the body to ensure that the bracket 3 is firmly fixed.

[0046] The handle 10 assembly includes a handle 10 and a bushing 8. The bushing 8 is sleeved on the valve stem of the valve core 2 and can move relative to it along its axial direction. The handle 10 is fixed on the bushing 8, and the bushing 8 is provided with a first boss 12. Specifically, there is a fitting clearance between the bushing 8 and the valve stem of the valve core 2 to ensure smooth axial movement of the bushing 8 and to prevent shaking. The handle 10 can be made of engineering plastic or aluminum alloy and the surface can be treated with anti-slip treatment. The shape of the first boss 12 of the bushing 8 can be cylindrical or rectangular and adapted to the width and depth of the track groove.

[0047] The reset assembly includes a reset block 6, a torsion spring 5, and a spring 7. The reset block 6 is connected to the bracket 3 via the torsion spring 5. The spring 7 abuts between the bushing 8 and the faucet body 1. Each reset block 6 is provided with a second protrusion 11. Specifically, the fit clearance between the second protrusion 11 of the reset block 6 and the track groove can be set to 0.2~0.5 mm. The elastic coefficient of the torsion spring 5 can be selected as 5-15 N·m to ensure that the reset block 6 can reliably reset after release. The spring 7 can be a compression spring 7, whose initial compression can be set to 2-4 mm. The force of the spring 7 can be controlled at 10-30 N to provide a suitable return force.

[0048] The track groove structure includes two communicating track grooves respectively provided in the bracket 3 and the faucet body 1. The second boss 11 is installed in one of the track grooves, and the first boss 12 is installed in the other track groove and can move into one of the track grooves. The track grooves limit the rotation angle of the handle 10. Specifically, the two track grooves can be respectively set in the middle of the bracket 3 and the inner side of the faucet body 1. The connection between the two track grooves can be designed as an arc transition to facilitate the movement of the first boss 12 of the bushing 8. The length of the track groove can be determined according to the rotation angle of the handle 10.

[0049] In the above technical solution, the integrated control of hot and cold water and the safety lock function of a single handle 10 are realized through the limiting cooperation between the main body and the bracket 3, the linkage structure between the bushing 8 and the valve core 2, and the mechanical linkage between the reset component and the track groove. The specific working process is as follows: When the cold water is turned on, the handle 10 is rotated to drive the bushing 8 to rotate, and the valve core 2 is controlled by the valve stem to open the cold water passage; when the hot water is turned on, the handle 10 must be pushed axially to move the first protrusion 12 of the bushing 8 to engage with the second protrusion 11 of the reset block 6, and then the handle 10 is rotated to drive the valve core 2 to switch to the hot water passage through the reset block 6. After release, the torsion spring 5 and the spring 7 drive each component to reset. This structure, through mechanical limiting and linkage design, avoids children from accidentally turning on the hot water directly, while simplifying the operation process and improving the safety and convenience of use.

[0050] In another technical solution, the bracket 3 is provided with a positioning hole, and the reset block 6 is provided with a positioning groove;

[0051] One end of the torsion spring 5 is inserted into the positioning hole, and the other end is inserted into the positioning groove to drive the reset block 6 to reset. Specifically, the diameter of the positioning hole on the bracket 3 can be designed to be 3-6 mm, and the position of the hole can be located at the top or side center of the bracket 3 to accommodate torsion springs 5 ​​of different specifications and ensure that the torsion spring 5 is evenly stressed after installation. The positioning groove on the reset block 6 corresponds to the positioning hole of the bracket 3, so that the axes of the two ends of the torsion spring 5 are aligned. The width of the positioning groove can be designed to be 2-4mm and the depth to be 5-8mm. The arm of the other end of the torsion spring 5 is inserted into the positioning groove of the reset block 6. The thickness of the arm matches the width of the groove to ensure that there is no obvious looseness during linkage. The torsion spring 5 forms an elastic linkage structure by inserting its two ends into the positioning hole of the bracket 3 and the positioning groove of the reset block 6 respectively. When the operating handle 10 drives the bushing 8 to move or rotate axially, the reset block 6 moves accordingly and causes the torsion spring 5 to undergo elastic deformation and store potential energy. After the handle 10 is released, the torsion spring 5 releases potential energy to drive the reset block 6 to rotate to the initial position, and then drives the bushing 8 and the handle 10 to reset synchronously through the locking structure between the reset block 6 and the bushing 8.

[0052] In another technical solution, the first boss 12 has a corresponding hole, and the second boss 11 is inserted into the corresponding hole, so that the bushing 8 drives the reset block 6 to move synchronously. Specifically, the diameter of the corresponding hole on the first boss 12 can be designed to be 4-8 mm, and the depth of the hole can be set to 6-10 mm to match the size of the second boss 11. The first boss 12 can be located on the side or end of the bushing 8, and the axis of the corresponding hole is parallel to the axis of the bushing 8 to facilitate the insertion of the second boss 11. The shape of the second boss 11 can be cylindrical or prismatic, and the diameter or side length can be selected from 3-6 mm. The height matches the depth of the corresponding hole. The second boss 11 can be set on the side or end of the reset block 6. Its position is on the same horizontal plane as the corresponding hole of the first boss 12, ensuring that the two can be accurately aligned after the bushing 8 moves axially. When hot water needs to be turned on, the handle 10 is pushed axially to move the bushing 8 along the valve stem of the valve core 2. The first boss 12 of the bushing 8 moves with the bushing 8 to align with the second boss 11 of the reset block 6. At this time, the second boss 11 is inserted into the corresponding hole to form a lock. When the handle 10 is rotated, the bushing 8 drives the reset block 6 to rotate synchronously through the cooperation of the corresponding hole and the second boss 11. The reset block 6 then drives the valve core 2 to switch to the hot water passage through the connection of the torsion spring 5 and the bracket 3. This structure realizes the linkage between the bushing 8 and the reset block 6 through mechanical locking, ensuring that the continuous operation of "push-lock-rotate" must be completed when the hot water is turned on, avoiding simply turning the handle 10 to turn on the hot water directly. When handle 10 is released, torsion spring 5 and spring 7 drive reset block 6 and bushing 8 to reset respectively, and second boss 11 disengages from corresponding hole, returning the control mechanism to its initial state. This design, through clear mechanical limits and linkage relationships, effectively improves the safety of hot water activation, reduces the risk of accidental operation by children, and ensures the stability and reliability of hot and cold water switching.

[0053] In another technical solution, the corresponding hole of the second boss 11 and the bushing 8 is a clearance fit. Specifically, the tolerance of the clearance fit can be set to H7 / g6 or H8 / f7, and the corresponding clearance value can be 0.02-0.1 mm. This ensures that the second boss 11 can rotate flexibly after being inserted into the corresponding hole, while avoiding wobbling caused by excessive clearance. The corresponding hole of the bushing 8 and the surface of the second boss 11 of the reset block 6 can be polished. The clearance fit design allows the second boss 11 to rotate the reset block 6 through mechanical linkage after being inserted into the corresponding hole, while also allowing slight relative movement between the bushing 8 and the reset block 6 in the axial direction. The specific working process is as follows: when the hot water is turned on, the bushing 8 is pushed axially to insert the second boss 11 into the corresponding hole. At this time, the clearance fit allows the bushing 8 to complete the insertion first. Axial positioning is achieved by rotating the handle 10 to make the second boss 11 contact the side wall of the corresponding hole, thereby transmitting rotational torque. After releasing the handle 10, the torsion spring 5 drives the reset block 6 to reset. The second boss 11 first disengages from the rotational force state within the gap range, and then returns axially with the bushing 8. This matching method avoids the jamming problem that may be caused by interference fit, while ensuring the linkage reliability when the hot water is turned on. With the limiting structure of the track groove, it can effectively prevent the operation failure caused by assembly error or wear, and improve the durability of the control mechanism and the user experience.

[0054] In another technical solution, spring 7 is used to push bushing 8 and handle 10 back to their initial position after releasing handle 10. Specifically, spring 7 can be a cylindrical helical compression spring 7, and the force of spring 7 can be controlled between 10-30 N to provide a suitable return thrust. The material of spring 7 can be stainless steel or piano wire. Stainless steel spring 7 is corrosion resistant and suitable for humid environments, while piano wire spring 7 has high elasticity and fatigue resistance. One end of spring 7 abuts in the groove at the bottom of bushing 8, and the other end abuts on the boss at the top of faucet body 1, ensuring that the direction of force is consistent with the axial direction of bushing 8. The depth of the groove at the bottom of bushing 8 can be set to 3-5 mm, and the diameter matches the outer diameter of spring 7. The height of the boss at the top of faucet body 1 can be set to 2-4 mm. The spring 7 is positioned and constrained by the diameter of mm, preventing it from shifting during compression. The compression stroke of the spring 7 must match the axial movement distance of the bushing 8 to ensure that the bushing 8 can completely return from the second region of hot water to the first region of cold water. When the operating handle 10 turns on the hot water, it pushes the bushing 8 axially to compress the spring 7, which stores elastic potential energy. After rotating the handle 10 to turn on the hot water, the handle 10 is released, and the spring 7 releases its potential energy to push the bushing 8 along the valve stem axis to move back to its initial position, while simultaneously driving the handle 10 to return to its original position. During this process, the return force of the spring 7 and the torque of the torsion spring 5 driving the reset block 6 work together to ensure that the first boss 12 of the bushing 8 and the second boss 11 of the reset block 6 can smoothly disengage and the bushing 8 can accurately return to the first region of the track groove. The application of the spring 7 realizes the automatic reset of the axial movement of the bushing 8, avoiding the tediousness of manual reset. At the same time, together with the torsion spring 5, it forms a double reset mechanism, improving the reliability of the control mechanism and ensuring that each component can stably return to its initial state after switching between hot and cold water, reducing the risk of leakage or misoperation due to components not being reset.

[0055] In another technical solution, the spring 7 has positioning protrusions at both ends, and the bushing 8 and the faucet body 1 have grooves that fit the positioning protrusions. Specifically, the diameter of the positioning protrusions at both ends of the spring 7 is 1-3 mm larger than the outer diameter of the spring 7, so as to fit into the grooves at the bottom of the bushing 8 and the top of the faucet body 1. The diameter of the groove at the bottom of the bushing 8 matches the outer diameter of the positioning protrusion, ensuring that there is no obvious shaking after the positioning protrusion is inserted. The groove at the bottom of the bushing 8 is located at the axial center of the bushing 8, and the groove at the top of the faucet body 1 is on the same axis as the groove of the bushing 8, ensuring that the axis of the spring 7 is consistent with the axis of the bushing 8 after installation. The fit tolerance between the positioning protrusion and the groove can be H9 / h9, and the gap value is controlled at 0.1-0.3 mm, which is convenient for installation and can also play a limiting role. The positioning protrusions at both ends of the spring 7 are respectively embedded in the grooves of the bushing 8 and the faucet body 1 to form a mechanical positioning structure. When the spring 7 is compressed or extended, the fit between the positioning protrusion and the groove restricts the radial movement of the spring 7, preventing the spring 7 from shifting or twisting during the force process. The specific working process is as follows: When the hot water is turned on and pushes the bushing 8, the spring 7 is compressed, and the positioning convex ring slides in the groove to keep the axis of the spring 7 stable; after releasing the handle 10, the spring 7 pushes the bushing 8 back to its original position, and the positioning convex ring guides the spring 7 to release potential energy axially, ensuring that the bushing 8 smoothly returns to its initial position. This positioning structure improves the stability of the spring 7's operation, reduces jamming caused by spring 7 offset, simplifies the assembly process, eliminates the need for additional positioning components, and, in conjunction with the reset function of the torsion spring 5, further improves the reliability and service life of the control mechanism.

[0056] In another technical solution, the bracket 3 is locked to the faucet body 1 by the nut 4, forming a fixed support structure to limit the movement trajectory of the reset block 6 and the bushing 8. Specifically, the nut 4 can be a stainless steel hexagonal nut 4, used to mate with the internal threaded hole on the faucet body 1. The contact surface between the bracket 3 and the faucet body 1 can be designed as a flat surface or a stepped surface. When the surface is flat, the surface roughness is controlled to be below Ra 6.3μm. When the surface is stepped, the fit tolerance is H8 / h7 to ensure assembly accuracy. The locking position of the nut 4 can be located at the four corners or the center of the bracket 3, so that the bracket 3 is evenly fixed to the top of the faucet body 1. The limiting boss 13 on the bracket 3 mates with the limiting notch on the faucet body 1. The height of the limiting boss 13 is 2-5 mm. The notch depth matches the mm, forming a lateral limit to prevent the bracket 3 from shifting. The movement trajectory of the reset block 6 and the bushing 8 is limited by the track groove and guide structure on the bracket 3. The bracket 3 is locked by the nut 4 to form a rigid support, providing a stable movement reference for the reset block 6 and the bushing 8. The specific working process is as follows: when the bushing 8 moves axially or rotates, the track groove and limit structure of the bracket 3 limit its movement direction and range, ensuring that the first boss 12 of the bushing 8 engages or separates from the second boss 11 of the reset block 6 along the preset trajectory; the rotational movement of the reset block 6 under the action of the torsion spring 5 is also limited by the shaft hole of the bracket 3 to ensure the stability of its rotation axis. This fixing method makes the bracket 3 the core support component of the control mechanism. The movement trajectory of each component is precisely controlled by mechanical limit, avoiding jamming or misoperation caused by the shaking of the bracket 3. With the reset function of the spring 7 and the torsion spring 5, the stability and reliability of the control mechanism can be further improved, ensuring the smoothness and safety of the hot and cold water switching process.

[0057] In another technical solution, multiple screws 9 are also included for fixing the reset block 6 and the spring 7. Specifically, the screws 9 mechanically connect the reset block 6 and the spring 7 to the bracket 3 or the faucet body 1, forming a stable assembly structure. The specific working process is as follows: the reset block 6 is fixed to the rotating shaft of the bracket 3 by the screws 9, ensuring that it rotates around the shaft under the drive of the torsion spring 5; the spring 7 is positioned by the screws 9 and the spring 7 seat, and is compressed or released when the bushing 8 moves axially, providing a return force. This fixing method utilizes the fastening effect of the screws 9 to prevent the reset block 6 and the spring 7 from shifting or falling off during movement.

[0058] In another technical solution, the mechanical linkage structure between the handle 10, the bushing 8, and the reset block 6 includes:

[0059] When in cold water, when the handle 10 is in the initial position, the bushing 8 is located in the first area of ​​the track groove, and the first boss 12 and the second boss 11 are separated. When the handle 10 moves away from the operator to the limit position, the bushing 8 drives the valve core 2 through the valve stem to keep the cold water passage open.

[0060] When in hot water mode, handle 10 needs to be pushed in a straight line along the valve stem axis to move bushing 8 from the first area of ​​the track groove to the second area corresponding to the second boss 11 and engage. When handle 10 is rotated towards the operator, the engagement structure between bushing 8 and reset block 6 drives valve core 2 to switch to hot water passage. After handle 10 is released, torsion spring 5 drives reset block 6 to reset, and spring 7 pushes bushing 8 back to the first area, so that handle 10 and valve core 2 return to the initial position synchronously.

[0061] Specifically, the axial distance between the first and second regions of the track groove can be designed to be 5-10 mm to ensure accurate engagement of the first boss 12 and the second boss 11 after the bushing 8 moves axially. In cold water condition, the rotation angle of the handle 10 can be limited to 45°-90°, corresponding to an arc length of 10-20 mm. The limiting position is achieved through protrusions or grooves on the bracket 3. In hot water condition, the axial pushing stroke of the handle 10 is 3-6 mm. mm, rotation angle is 60°-120°, when engaged, the engagement depth of the first boss 12 and the second boss 11 is not less than 4mm to ensure linkage reliability. The axial movement of the bushing 8 and the valve stem is achieved by linear sliding, with a fitting clearance of 0.1-0.3mm to ensure smooth pushing feel. The spring coefficient of the torsion spring 5 of the reset block 6 can be 8-12N・m, and the force of the spring 7 can be 15-25N. The two work together to make the bushing 8 and the reset block 6 complete the reset within 0.5 seconds after release. The movement trajectory of each component is precisely limited by the track groove in the bracket 3 and the faucet body 1. For example, the inner wall of the track groove is machined with a guide slope to guide the first boss 12 to move along the preset path.

[0062] In the above technical solution, turning on the cold water only requires rotating the handle 10, which directly drives the valve core 2 via the bushing 8, making operation convenient. Turning on the hot water requires a dual action of "axial push + rotation," utilizing the area division of the track groove and the engagement of the bosses to form a safety lock mechanism to prevent accidental activation by children. The specific workflow is as follows: In cold water mode, rotating the handle 10 causes the bushing 8 to rotate in the first area, and the valve stem rotates simultaneously to open the cold water. In hot water mode, first push the handle 10 to disengage the bushing 8 from the first area and engage it with the reset block 6, then rotate the handle 10 to drive the valve core 2 to switch to hot water via the reset block 6. After release, the torsion spring 5 and the spring 7 drive the reset block 6 and the bushing 8 back to their initial positions, and the first boss 12 separates from the second boss 11. This structure distinguishes between cold and hot water operation through mechanical linkage logic, and combined with limit and reset design, it ensures both ease of use and significantly improves safety against accidental activation.

[0063] In another technical solution, a limiting step is provided between the first and second regions of the track groove. Specifically, the height of the limiting step can be designed to be 1.5-2.0 mm, and the width to be 3-5 mm. It is integrally formed with the track groove, and the material is the same as that of the bracket 3 or the faucet body 1, such as aluminum alloy or engineering plastic. The limiting step is located at the transition between the two regions, and its position is aligned with the initial position of the first boss 12 of the bushing 8. This ensures that when the bushing 8 is in the first region, the first boss 12 is blocked by the step and cannot directly enter the second region. The top surface of the limiting step can be designed as a plane or an inclined plane. A plane structure is easy to process, while an inclined structure (angle 30°-45°) facilitates the axial pushing of the bushing 8 to guide the first boss 12 over the step. When the bushing 8 is in the first region, the gap between the first boss 12 and the limiting step is 0.5-1.0 mm, ensuring that the bushing 8 is not interfered with when rotating. When the bushing 8 is axially pushed, the first boss 12 needs to overcome the step height (1.5-2.0 mm). Only when the water temperature reaches 10 mm can the bushing 8 enter the second area, forming a mechanical limit. The limiting step restricts the axial movement path of the bushing 8 through the height difference, ensuring that sufficient thrust must be applied when the hot water is turned on to make the first boss 12 pass over the step, avoiding accidental entry of the bushing 8 into the second area due to accidental touch or slight collision. The specific working process is as follows: In the cold water state, the bushing 8 rotates in the first area, and the limiting step prevents it from moving to the second area; when the hot water is turned on, the handle 10 is pushed axially to compress the spring 7 of the first boss 12 and pass over the step, entering the second area and engaging with the second boss 11. At this time, the step serves as a positioning reference to ensure accurate engagement; after releasing the handle 10, the spring 7 pushes the bushing 8 back, and the limiting step again blocks the first boss 12, keeping it in the first area. This structure enhances the reliability of the safety lock function through physical limiting. Combined with the reset effect of the torsion spring 5, it can effectively prevent children from turning on the hot water by simply rotating the handle 10. At the same time, the setting of the step height balances the relationship between operating force and safety, improving the user experience.

[0064] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A handle structure of a faucet, characterized by, include: The faucet body has an internal cavity for installing the valve core, and a limiting notch is provided on the faucet body. The valve core, whose stem is used to control the flow of water and the switching between hot and cold water; The bracket is fixed to the faucet body and has a limiting protrusion that cooperates with the limiting notch of the faucet body to restrict the movement of the bracket. A handle assembly includes a handle and a bushing. The bushing is fitted onto the valve stem of the valve core and can move relative to it along its axial direction. The handle is fixed to the bushing, and the bushing is provided with a first boss. The reset assembly includes a reset block, a torsion spring, and a spring. The reset block is connected to the bracket via the torsion spring, and the spring abuts against the bushing and the faucet body. Each reset block is provided with a second protrusion. The track groove structure includes two communicating track grooves respectively provided in the bracket and the faucet body, a second boss installed in one of the track grooves, a first boss installed in the other track groove and movable toward one track groove, and the track grooves restrict the angle of rotation of the handle.

2. The handle structure of a faucet according to claim 1, wherein The bracket is provided with positioning holes, and the reset block is provided with positioning grooves; One end of the torsion spring is inserted into the positioning hole, and the other end is inserted into the positioning groove, which is used to drive the reset block to reset.

3. The control structure of the faucet as described in claim 1, characterized in that, The first boss has a corresponding hole, and the second boss is inserted into the corresponding hole, so that the bushing drives the reset block to move synchronously.

4. The control structure of the faucet as described in claim 3, characterized in that, The second boss and the corresponding hole of the bushing are clearance fit.

5. The control structure of the faucet as described in claim 1, characterized in that, The spring is used to push the bushing and handle back to the initial position after the handle is released.

6. The control structure of the faucet as described in claim 5, characterized in that, The spring has positioning protrusions at both ends, and the bottom of the bushing and the top of the faucet body have grooves that fit the positioning protrusions.

7. The control structure of the faucet as claimed in claim 1, characterized in that, The bracket is locked to the faucet body by a nut, forming a fixed support structure to limit the movement trajectory of the reset block and bushing.

8. The control structure of the faucet as claimed in claim 1, characterized in that, It also includes multiple screws for securing the reset block and spring.

9. The control structure of the faucet as claimed in claim 1, characterized in that, The mechanical linkage structure between the handle, bushing, and reset block includes: When in cold water, when the handle is in the initial position, the bushing is located in the first area of ​​the track groove, and the first boss and the second boss are separated. When the handle moves away from the operator to the limit position, the bushing drives the valve core through the valve stem to keep the cold water passage open. When the hot water is running, the handle must first be pushed in a straight line along the valve stem axis to move the bushing from the first area of ​​the track groove to the second area corresponding to the second boss and engage. Then, when the handle is rotated towards the operator, the engagement structure between the bushing and the reset block drives the valve core to switch to the hot water passage. After the handle is released, the torsion spring drives the reset block to reset, and the spring pushes the bushing back to the first area, so that the handle and the valve core return to their initial positions synchronously.

10. The control structure of the faucet as claimed in claim 9, characterized in that, A limiting step is provided between the first and second zones of the track groove.

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