Motor-driven one-piece valve core

Abstract

The utility model relates to a motor driving type connected valve element which comprises a valve shell, a valve handle, a rotor, a fixed valve plate, a movable valve plate and a motor driving assembly. The device is characterized in that the motor driving assembly comprises a motor, a gear box and an output shaft, the motor is fixed to the top face of the gear box, a speed reduction transmission gear set is arranged in the gear box, a small gear is installed on a motor shaft of the motor, and the output shaft is arranged on the bottom face of the gear box in a penetrating mode. The upper end of the output shaft is a first gear part meshed with a tail end gear of the speed reduction transmission gear set; the gearbox is fixed to the top face of the valve shell, and the lower end of the output shaft is connected with the valve handle in an inserted and matched mode so that rotation of the output shaft can drive the valve handle to rotate. The final output rotating speed of the motor in the valve element is low, torsion is large, and the reliability and service life of the motor can be effectively improved.

Description

Technical Field

[0001] The utility model relates to a faucet valve core, in particular to a motor-driven one-piece valve core. Background Art

[0002] There are three main methods for controlling the water output of existing faucets. The first method is to manually control the swing or rotation of the valve handle to control the water output and / or water temperature. This is the most traditional method, but it cannot realize the intelligent control of the faucet. The second method is to control the water output by receiving and sending signals through the sensing component and then controlling the electric control switch such as the solenoid valve switch. This control method has relatively high requirements on water quality. If impurities enter the faucet, it will affect the opening and closing of the solenoid valve switch. The third method is to use a motor to drive the valve handle to rotate and then drive the valve core to rotate to achieve water flow and / or water temperature control. This method is conducive to realizing the intelligence of the faucet. For example, a Chinese utility model patent with patent number CN202220333245.6 (publication number CN216923409U) discloses "an intelligent valve core structure", and a Chinese utility model patent with patent number CN202121888849.9 (publication number CN216158358U) discloses "a one-inlet and three-outlet electric ceramic conversion valve core", both of which disclose valve cores driven by motors.

[0003] The existing valve cores driven by this type of motor have a common feature: the motor is fixed on the top of the valve housing, and the output shaft of the motor extends into the valve housing and connects to the rotor to directly drive the rotor to rotate. Because the motors used for valve cores are very small, the speed of this small motor is fast and the torque is small. The fast speed leads to inaccurate control of the valve core rotation angle, and the small torque may cause the motor to drive the valve core to rotate more laboriously, resulting in unstable reliability and life; in addition, the motors of existing valve cores are all purchased in a unified manner, and their torque is constant. The motors purchased in a unified manner may be matched with different valve cores according to different customer needs. Different valve cores have different torque requirements, resulting in unstable motor life (matching some valve cores is better, but matching other valve cores may not meet the needs); the motor is external, the size of the motor is large, and after being installed on the valve core, there is a clear feeling of top-heavy, and the overall appearance is not beautiful.

[0004] Therefore, the existing motor-driven valve core needs further improvement. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a motor-driven one-piece valve core with reasonable structure and good integrity in view of the current status of the prior art. The motor in the valve core finally outputs a slow speed and a large torque, which can effectively improve the reliability and life of the motor.

[0006] The first technical solution adopted by the utility model to solve the above technical problems is: a motor-driven one-piece valve core, including a valve housing, a valve handle, a fixed valve plate, a movable valve plate and a motor drive assembly, wherein the fixed valve plate is fixed at the bottom of the valve housing, the valve handle is inserted into the valve housing and can rotate around its own axis, and the movable valve plate is arranged above the fixed valve plate and is driven to rotate by the valve handle; it is characterized in that: the motor drive assembly includes a motor, a gear box, and an output shaft, the motor is fixed on the top surface of the gear box, a reduction transmission gear set is arranged in the gear box, the motor shaft of the motor extends into the gear box, and a pinion gear meshing with the starting gear of the reduction transmission gear set is installed on the motor shaft, the output shaft is inserted into the bottom surface of the gear box and can rotate around its own axis, and the upper end of the output shaft is a first gear portion meshing with the terminal gear of the reduction transmission gear set; the gear box is fixed on the top surface of the valve housing, and the lower end of the output shaft is plug-fitted and connected with the valve handle so that the rotation of the output shaft can drive the valve handle to rotate.

[0007] For easy assembly, the gearbox is composed of a housing and a lower cover. The lower cover is arranged at the lower port of the housing. A first screw passes through the lower cover and the housing from bottom to top and is threadedly connected to the motor placed on the top surface of the housing, thereby fixing the motor, the housing and the lower cover together. The connecting wall is arranged on the bottom surface of the lower cover, the output shaft is passed through the lower cover, and the lower cover is fixed to the top surface of the valve housing. The gearbox is divided into two independent parts, which is convenient for manufacturing and facilitating the assembly of the reduction transmission gear set in the limit wall gearbox. The first screw passes through the lower cover and the housing from bottom to top and is threadedly connected to the motor. In this way, when the motor drive assembly is assembled to the top surface of the valve housing, the end of the first screw is completely covered, which is not easy to rust and can make the whole product more integrated.

[0008] As a preferred fixing method for the gearbox, the left and right sides of the lower cover are provided with mounting lugs, the top surface of the valve housing is provided with a mounting flange, the mounting flange has a recess for the mounting lug to be embedded, the mounting lug is embedded in the recess and fixed to the mounting flange by a second screw. The screw method is adopted, which is convenient for fixing, and the recess of the mounting flange has a limiting effect on the mounting lug, which is convenient for positioning.

[0009] In order to further ensure that the motor drive assembly and the valve housing are assembled smoothly and securely, the top surface of the valve housing is provided with an annular wall extending upward, the annular wall encloses a mounting cavity, the upper end of the valve handle is arranged at the bottom of the mounting cavity, and the bottom surface of the lower cover is provided with a limiting wall extending downward, the limiting wall is inserted into the mounting cavity and fits with the annular wall. The mutual restraint between the annular wall and the inner wall of the housing makes it difficult for the lower cover and the housing to shake, and the assembly is more secure.

[0010] As an improvement, the annular wall is composed of two straight sections and two arc sections, the two straight sections are arranged at intervals in the left and right, and the two arc sections are arranged at intervals in the front and back, and the two ends of each arc section are connected with the corresponding side of the straight section. The annular wall and the connecting wall are non-circular structures that are plugged into each other, so that the motor drive assembly and the valve housing can be assembled more stably and securely, and the two are not easy to deflect.

[0011] As another way to fix the gearbox, the top surface of the valve housing is provided with an annular wall extending upward, the annular wall encloses a mounting cavity, the upper end of the valve handle is provided at the bottom of the mounting cavity, and the bottom surface of the lower cover is provided with two connecting walls extending downward, the connecting walls are inserted into the mounting cavity and snap-connected with the annular wall. During assembly, it is only necessary to insert the connecting wall of the motor drive assembly into the annular wall and snap-connect with the annular wall, and then plug and connect the output shaft with the valve handle to complete the overall assembly, which is convenient to assemble and makes the integrity of the product very good.

[0012] As an improvement, the annular wall is composed of two straight sections and two arc sections, the two straight sections are arranged at intervals from left to right, the two arc sections are arranged at intervals from front to back, and the two ends of each arc section are connected with the corresponding side of the straight section, and the straight section is provided with a clamping hole; the connecting wall has two and is arranged at intervals from left to right and is in the shape of a flat plate, and the outer end surface of the connecting wall is provided with a buckle that is engaged with the clamping hole. The annular wall and the connecting wall are non-circular structures that are plugged into each other, so that the assembly between the motor drive assembly and the valve housing can be more stable and reliable, and the two are not easy to deflect. In order to further ensure the stable and reliable assembly between the motor drive assembly and the valve housing, the bottom surface of the lower cover is also provided with two limiting walls extending downward and arranged at intervals from front to back, and the arc-shaped limiting walls are in contact with the arc section of the annular wall. Under the mutual limiting action of the limiting wall and the arc section of the annular wall, the gear box is not easy to shake relative to the valve housing.

[0013] As an improvement, the top surface of the lower cover is provided with an annular insert wall extending upward, and the annular insert wall is in contact with the inner wall of the shell; the annular wall and the inner wall of the shell are mutually constrained, so that the lower cover and the shell are not easy to shake, and the assembly is more secure. In order to further securely fix the motor and the shell, a plurality of second screws are also included, and each of the second screws passes through the top wall of the shell from bottom to top and is threadedly connected to the motor placed on the top surface of the shell.

[0014] Compared with the prior art, the first technical solution of the utility model has the following advantages: the motor drive assembly is made into an integral whole, and the motor shaft of the motor does not directly drive the valve handle to rotate, but drives the valve handle to rotate through the reduction transmission gear set and the output shaft, so that the output speed of the motor drive assembly is reduced, and the output torque is increased at the same time, and the motor drive assembly is specifically designed for a specific valve core (to ensure that the torque of the valve core is basically constant), which effectively improves the working stability and service life of the motor; in addition, the motor drive assembly and the valve housing are upper and lower structures. During assembly, it is only necessary to fix the gear box of the motor drive assembly to the top surface of the valve housing to complete the assembly, which is convenient to assemble and makes the integrity of the product very good.

[0015] The second technical solution adopted by the utility model to solve the above technical problems is: a motor-driven one-piece valve core, including a valve housing, a valve handle, a movable valve plate, a fixed valve plate and a motor drive assembly, the valve handle is inserted into the valve housing and can rotate around its own axis, the fixed valve plate is fixed at the bottom of the valve housing, the movable valve plate is arranged above the fixed valve plate and is driven to rotate by the valve handle; it is characterized in that: the motor drive assembly includes a motor and a gear box, the motor is fixed on the top surface of the gear box, a reduction transmission gear set is arranged in the gear box, the motor shaft of the motor extends into the gear box, and a small gear meshing with the starting gear of the reduction transmission gear set is installed on the motor shaft of the motor, and a through hole is arranged on the bottom surface of the gear box; the gear box is fixed on the top surface of the valve housing, the upper end of the valve handle has a second gear part, and when the motor drive assembly is assembled to the top surface of the valve housing, the second gear part meshes with the end gear of the reduction transmission gear set after passing through the through hole.

[0016] To facilitate assembly, the above-mentioned gear box consists of an outer shell and a lower cover. The lower cover is arranged at the lower port of the outer shell. A first screw passes through the lower cover and the outer shell from bottom to top in sequence and is threadedly connected to the motor placed on the top surface of the outer shell, thereby fixing the motor, the outer shell and the lower cover together. A perforation is arranged on the lower cover, and the lower cover is fixed to the top surface of the valve housing by screws or buckles.

[0017] Compared with the prior art, the second technical solution of the utility model has the following advantages: the motor drive assembly is made into an integral whole, and the motor shaft of the motor in the motor drive assembly does not directly drive the valve handle to rotate, but drives the valve handle to rotate after passing through the reduction transmission gear set, so that the output speed of the motor drive assembly is reduced, and the output torque is increased at the same time, and the motor drive assembly is specifically designed for a specific valve core (to ensure that the torque of the valve core is basically constant), which effectively improves the working stability and service life of the motor; in addition, the motor drive assembly and the valve housing are upper and lower structures. During assembly, it is only necessary to fix the gear box of the motor drive assembly to the top surface of the valve housing, and let the second gear part at the upper end of the valve handle pass through the through-hole on the bottom surface of the gear box and mesh with the end gear of the reduction transmission gear set to complete the overall assembly, which is convenient to assemble and makes the integrity of the product very good. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the first embodiment of the utility model;

[0019] Figure 2 It is a cross-sectional view of the first embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the installation of the first embodiment of the utility model;

[0021] Figure 4 This is a three-dimensional exploded view of the motor drive assembly in the first embodiment of the utility model

[0022] Figure 5 This is a schematic diagram of the three-dimensional structure of the second embodiment of the utility model;

[0023] Figure 6 It is a cross-sectional view of a second embodiment of the utility model;

[0024] Figure 7 for Figure 6 AA section view;

[0025] Figure 8 This is a schematic diagram of the installation of the second embodiment of the utility model;

[0026] Fig. 9 The third embodiment of the present invention is a three-dimensional exploded view of the motor drive assembly in the second embodiment of the present invention. Figure 1 ;

[0027] Fig.10 The third embodiment of the present invention is a three-dimensional exploded view of the motor drive assembly in the second embodiment of the present invention. Figure 2 ;

[0028] Fig.11 It is a cross-sectional view of a third embodiment of the utility model;

[0029] Fig.12 This is a schematic diagram of the installation of the third embodiment of the utility model;

[0030] Fig.13 It is a three-dimensional schematic diagram of the motor drive assembly in the third embodiment of the utility model. DETAILED DESCRIPTION

[0031] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0032] like Figures 1 to 4 Shown is the first embodiment of the utility model.

[0033] A motor-driven one-piece valve core includes a valve housing 1, a valve handle 2, a fixed valve disc 4, a movable valve disc 5 and a motor drive assembly. The valve handle 2 is inserted into the valve housing 1 and can rotate around its own axis. The fixed valve disc 4 is fixed at the bottom of the valve housing 1. The movable valve disc 5 is arranged above the fixed valve disc 4 and is directly or indirectly driven to rotate by the valve handle 2. The specific structure and matching method of the rotor 3, the fixed valve disc 4 and the movable valve disc 5 are the existing technology. The rotation of the movable valve disc 5 can be the control of water flow and / or water temperature, which will not be elaborated in detail here. Of course, the valve housing 1 can also be provided with a rotor 3, and the movable valve disc 5 is arranged above the fixed valve disc 4 and installed at the bottom of the rotor 3 and can rotate with the rotor 3. In addition, the valve housing in this embodiment is a bottom water inlet and side water outlet mode, that is, the water inlet 1a is arranged at the bottom of the valve housing 1, and the water outlet 1b is arranged at the side wall of the valve housing 1. The positions of the water inlet 1a and the water outlet 1b can also be interchanged.

[0034] The motor drive assembly includes a motor 6, a gear box 7, and an output shaft 8. The motor 6 is fixed on the top surface of the gear box 7. The gear box 7 is provided with a reduction transmission gear set 71. The reduction transmission gear set 71 can be designed as required, and the existing reduction gear box structure can be referred to. The motor shaft 61 of the motor 6 extends into the gear box 7, and a pinion 62 meshing with the starting gear of the reduction transmission gear set 71 is installed on the motor shaft 61. The output shaft 8 is penetrated on the bottom surface of the gear box 7 and can rotate around its own axis. The upper end of the output shaft 8 is a first gear part 81 meshing with the terminal gear of the reduction transmission gear set 71; the gear box 7 is fixed on the top surface of the valve housing 1, and the lower end of the output shaft 8 is plugged and connected with the valve handle 2 so that the rotation of the output shaft 8 can drive the valve handle 2 to rotate. The lower end of the output shaft 8 has a flat insertion portion 82, and the top surface of the valve handle 2 is provided with a socket 22 for the insertion portion 82 to be matched and inserted.

[0035] The gear box 7 is composed of an outer shell 7a and a lower cover 7b, wherein the lower cover 7b is arranged at the lower port of the outer shell 7a, and a first screw 9a passes through the lower cover 7b and the outer shell 7a from bottom to top in sequence, and is threadedly connected to the motor 6 placed on the top surface of the outer shell 7a, thereby fixing the motor 6, the outer shell 7a and the lower cover 7b together, and the output shaft 8 is passed through the lower cover 7b, and the lower cover 7b is fixed to the top surface of the valve housing 1; it also includes a plurality of third screws 9c, each of which passes through the top wall of the outer shell 7a from bottom to top and is threadedly connected to the motor 6 placed on the top surface of the outer shell 7a.

[0036] The left and right sides of the lower cover 7b are provided with mounting lugs 74, and the top surface of the valve housing 1 is provided with a mounting flange 12, which has a recess 121 for the mounting lugs 74 to be embedded in. The mounting lugs 74 are embedded in the recess 121 and fixed to the mounting flange 12 by the second screws 9b.

[0037] The top surface of the valve housing 1 is provided with an annular wall 11 extending upward, the annular wall 11 encloses the installation cavity Q, the upper end of the valve handle 2 is arranged at the bottom of the installation cavity Q, and the bottom surface of the lower cover 7b is provided with a limiting wall 73 extending downward, the limiting wall 73 is inserted into the installation cavity Q, and fits with the annular wall 11. The annular wall 11 is composed of two straight sections 11a and two arc sections 11b, the two straight sections 11a are arranged at intervals from left to right, the two arc sections 11b are arranged at intervals from front to back, and the two ends of each arc section 11b are connected with the corresponding side of the straight section 11a.

[0038] The motor drive assembly is made into an integral whole. The motor shaft 61 of the motor 6 in the motor drive assembly does not directly drive the valve handle to rotate, but drives the valve handle 2 to rotate through the reduction transmission gear set 71 and the output shaft 8. In this way, the output speed of the motor drive assembly is reduced, and the output torque is increased. The motor drive assembly is specifically designed for a specific valve core (to ensure that the torque of the valve core is basically constant), which effectively improves the working stability and service life of the motor 6. In addition, the motor drive assembly and the valve housing 1 are an upper and lower structure. During assembly, it is only necessary to fix the lower cover 7b of the gear box 7 to the top surface of the valve housing 1 by the second screw 9b. The assembly is convenient and the integrity of the product is very good.

[0039] like Figures 5 to 10 Shown is the second embodiment of the utility model.

[0040] The difference between this embodiment and the first embodiment is that: the top surface of the valve housing 1 is provided with an annular wall 11 extending upward, the annular wall 11 encloses the installation cavity Q, the upper end of the valve handle 2 is provided at the bottom of the installation cavity Q, the bottom surface of the gear box 7 is provided with a connecting wall 72 extending downward, the connecting wall 72 is inserted into the installation cavity Q and snap-connected with the annular wall 11, and the lower end of the output shaft 8 is plug-fitted with the valve handle 2 so that the rotation of the output shaft 8 can drive the valve handle 2 to rotate. The connecting wall 72 is provided on the bottom surface of the lower cover 7b, and the output shaft 8 is penetrated on the lower cover 7b. The top surface of the housing 7a is provided with a positioning column 75 protruding upward, and the bottom surface of the housing of the motor 6 is provided with a positioning hole 63 for the positioning column 75 to be plugged in.

[0041] The annular wall 11 is composed of two straight sections 11a and two arc sections 11b. The two straight sections 11a are arranged at intervals from left to right, and the two arc sections 11b are arranged at intervals from front to back. The two ends of each arc section 11b are connected to the corresponding side of the straight section 11a. The straight section 11a is provided with a clamping hole 111. There are two connecting walls 72 arranged at intervals from left to right and in a flat plate shape. The outer end surface of the connecting wall 72 is provided with a buckle 721 that is engaged with the clamping hole 111. The bottom surface of the lower cover 7b is also provided with two limiting walls 73 extending downward and arranged at intervals from front to back. The limiting walls 73 are in contact with the arc section 11b of the annular wall 11.

[0042] like Figures 11 to 13 The third embodiment of the utility model is shown.

[0043] The difference between this embodiment and the first or second embodiment is that: the motor drive assembly includes a motor 6 and a gear box 7, the motor 6 is fixed on the top surface of the gear box 7, a reduction transmission gear set 71 is provided in the gear box 7, the motor shaft 61 of the motor 6 extends into the gear box 7, and a small gear 62 meshing with the starting gear of the reduction transmission gear set 71 is installed on the motor shaft 61, and a through hole 7b1 is provided on the bottom surface of the gear box 7; the gear box 7 is fixed on the top surface of the valve housing 1, and the upper end of the valve handle 2 has a second gear portion 21, and when the motor drive assembly is assembled to the top surface of the valve housing 1, the second gear portion 21 passes through the through hole 7b1 and meshes with the end gear of the reduction transmission gear set 71.

[0044] The gear box 7 is composed of an outer shell 7a and a lower cover 7b. The lower cover 7b is arranged at the lower port of the outer shell 7a. A first screw 9a passes through the lower cover 7b and the outer shell 7a from bottom to top in sequence and is threadedly connected with the motor 6 placed on the top surface of the outer shell 7a, thereby fixing the motor 6, the outer shell 7a and the lower cover 7b together. A through hole 7b1 is arranged on the lower cover 7b, and the lower cover 7b is fixed to the top surface of the valve housing 1 by screws or buckles.

[0045] During assembly, it is only necessary to insert the connecting wall 72 of the motor drive assembly into the annular wall 11 and snap-connect it with the annular wall 11, and let the second gear portion 21 at the upper end of the valve handle 2 pass through the through hole 7b1 on the bottom surface of the gear box 7 and mesh with the end gear of the reduction transmission gear set 71 to complete the overall assembly. The assembly is convenient and the integrity of the product is very good.

[0046] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A motor-driven one-piece valve core, comprising a valve housing (1), a valve handle (2), a fixed valve disc (4), a movable valve disc (5) and a motor drive assembly, wherein the valve handle (2) is inserted into the valve housing (1) and can rotate around its own axis, the fixed valve disc (4) is fixed to the bottom of the valve housing (1), and the movable valve disc (5) is arranged above the fixed valve disc (4) and is driven to rotate by the valve handle (2); characterized in that: The motor drive assembly comprises a motor (6), a gear box (7), and an output shaft (8); the motor (6) is fixed on the top surface of the gear box (7); a reduction transmission gear set (71) is arranged in the gear box (7); the motor shaft (61) of the motor (6) extends into the gear box (7); and a small gear (62) meshing with the starting gear of the reduction transmission gear set (71) is mounted on the motor shaft (61); the output shaft (8) is passed through the bottom surface of the gear box (7) and can rotate around its own axis; the upper end of the output shaft (8) is a first gear part (81) meshing with the terminal gear of the reduction transmission gear set (71); the gear box (7) is fixed on the top surface of the valve housing (1); the lower end of the output shaft (8) is plug-fitted and connected with the valve handle (2) so that the rotation of the output shaft (8) can drive the valve handle (2) to rotate.

2. The motor-driven one-piece valve core according to claim 1, characterized in that: The gear box (7) is composed of an outer shell (7a) and a lower cover (7b). The lower cover (7b) is arranged at the lower port of the outer shell (7a). A first screw (9a) passes through the lower cover (7b) and the outer shell (7a) from bottom to top and is threadedly connected with the motor (6) placed on the top surface of the outer shell (7a), thereby fixing the motor (6), the outer shell (7a) and the lower cover (7b) together. The output shaft (8) is passed through the lower cover (7b), and the lower cover (7b) is fixed to the top surface of the valve housing (1).

3. The motor-driven one-piece valve core according to claim 2, characterized in that: The lower cover (7b) is provided with mounting lugs (74) on both sides thereof, and the top surface of the valve housing (1) is provided with a mounting flange (12). The mounting flange (12) has a recess (121) for the mounting lugs (74) to be embedded in. The mounting lugs (74) are embedded in the recess (121) and fixed to the mounting flange (12) by a second screw (9b).

4. The motor-driven one-piece valve core according to claim 2, characterized in that: The top surface of the valve housing (1) is provided with an annular wall (11) extending upward, and the annular wall (11) encloses a mounting cavity (Q). The upper end of the valve handle (2) is arranged at the bottom of the mounting cavity (Q). The bottom surface of the lower cover (7b) is provided with a limiting wall (73) extending downward, and the limiting wall (73) is inserted into the mounting cavity (Q) and fits with the annular wall (11).

5. The motor-driven one-piece valve core according to claim 4, characterized in that: The annular wall (11) is composed of two straight sections (11a) and two arc sections (11b), the two straight sections (11a) are arranged at intervals in the left and right, and the two arc sections (11b) are arranged at intervals in the front and back, and the two ends of each arc section (11b) are connected to the corresponding side of the straight section (11a).

6. The motor-driven one-piece valve core according to claim 2, characterized in that: The top surface of the valve housing (1) is provided with an annular wall (11) extending upward, and the annular wall (11) encloses a mounting cavity (Q). The upper end of the valve handle (2) is arranged at the bottom of the mounting cavity (Q), and the bottom surface of the lower cover (7b) is provided with two connecting walls (72) extending downward, and the connecting walls (72) are inserted into the mounting cavity (Q) and are snap-connected with the annular wall (11).

7. The motor-driven one-piece valve core according to claim 6, characterized in that: The annular wall (11) is composed of two straight sections (11a) and two arc sections (11b), the two straight sections (11a) are arranged at intervals in the left and right, and the two arc sections (11b) are arranged at intervals in the front and back, and the two ends of each arc section (11b) are connected with the corresponding side of the straight section (11a), and a clamping hole (111) is opened on the straight section (11a); the connecting walls (72) are provided with two, which are arranged at intervals in the left and right and are in the shape of a flat plate, and the outer end surface of the connecting wall (72) is provided with a clamping buckle (721) that is engaged with the clamping hole (111); the bottom surface of the lower cover (7b) is also provided with two limiting walls (73) extending downward and arranged at intervals in the front and back, and the limiting walls (73) are in contact with the arc section (11b) of the annular wall (11).

8. The motor-driven one-piece valve core according to claim 2, characterized in that: The top surface of the lower cover (7b) is provided with an annular insert wall (75) extending upward, and the annular insert wall (75) is in contact with the inner wall of the outer shell (7a); and the lower cover (7b) further comprises a plurality of third screws (9c), each of the third screws (9c) passing through the top wall of the outer shell (7a) from bottom to top and being threadedly connected with the motor (6) placed on the top surface of the outer shell (7a).

9. A motor-driven one-piece valve core, comprising a valve housing (1), a valve handle (2), a fixed valve disc (4), a movable valve disc (5) and a motor drive assembly, wherein the valve handle (2) is inserted into the valve housing (1) and can rotate around its own axis, the fixed valve disc (4) is fixed to the bottom of the valve housing (1), and the movable valve disc (5) is arranged above the fixed valve disc (4) and is driven to rotate by the valve handle (2); characterized in that: The motor drive assembly comprises a motor (6) and a gear box (7); the motor (6) is fixed on the top surface of the gear box (7); a reduction transmission gear set (71) is arranged in the gear box (7); a motor shaft (61) of the motor (6) extends into the gear box (7); a small gear (62) meshing with a starting gear of the reduction transmission gear set (71) is mounted on the motor shaft (61); a through hole (7b1) is arranged on the bottom surface of the gear box (7); the gear box (7) is fixed on the top surface of the valve housing (1); the upper end of the valve handle (2) has a second gear portion (21); when the motor drive assembly is assembled to the top surface of the valve housing (1), the second gear portion (21) passes through the through hole (7b1) and meshes with the end gear of the reduction transmission gear set (71).

10. The motor-driven one-piece valve core according to claim 9, characterized in that: The gear box (7) is composed of an outer shell (7a) and a lower cover (7b). The lower cover (7b) is arranged at the lower port of the outer shell (7a). A first screw (9a) passes through the lower cover (7b) and the outer shell (7a) from bottom to top in sequence and is threadedly connected to the motor (6) placed on the top surface of the outer shell (7a), thereby fixing the motor (6), the outer shell (7a) and the lower cover (7b) together. The through hole (7b1) is arranged on the lower cover (7b), and the lower cover (7b) is fixed to the top surface of the valve housing (1) by means of screws or buckles.

Images