CN216306771U

CN216306771U - Control device and electrically operated valve

Info

Publication number: CN216306771U
Application number: CN202122277706.0U
Authority: CN
Inventors: 不公告发明人
Original assignee: Zhejiang Sanhua Automotive Components Co Ltd
Current assignee: Zhejiang Sanhua Automotive Components Co Ltd
Priority date: 2021-09-18
Filing date: 2021-09-18
Publication date: 2022-04-15
Anticipated expiration: 2031-09-18

Abstract

The utility model provides a control device, which comprises a housin, actuating mechanism, drive mechanism, actuating mechanism and drive mechanism are located the casing at least part, actuating mechanism is connected with the drive mechanism transmission, drive mechanism includes output gear, output gear output torque, control device includes the base plate, the casing has first through-hole, output gear is located first through-hole at least part, the base plate has the second through-hole, the central axis coincidence of first through-hole and second through-hole, output gear is located the second through-hole at least part, base plate and casing fixed connection. The control device of this application can restrict output gear motion through setting up the base plate, and first through-hole sets up with second through-hole alignment and is favorable to reducing output gear and assembling and/or rotate the eccentric condition of in-process appearance, is favorable to guaranteeing output gear and the axiality of lower casing, improves the stability of motorised valve.

Description

Control device and electrically operated valve

Technical Field

The application relates to the technical field of control, in particular to a control device and an electric valve comprising the same.

Background

The control device may be applied to an electrically operated valve which can be applied to a vehicle thermal management system for controlling the switching or on-off of fluid. The control device comprises a shell, and a driving mechanism, a transmission mechanism and other components arranged in the shell, and the technical problem to be solved is how to ensure the coaxiality requirement of the driving mechanism, the transmission mechanism and other components in the transmission process and improve the stability of the electric valve.

SUMMERY OF THE UTILITY MODEL

The purpose of the application is to provide a control device and an electric valve comprising the control device, which are beneficial to ensuring the coaxiality requirement of components such as a driving mechanism, a transmission mechanism and the like in the transmission process and improving the stability of the electric valve.

In order to achieve the purpose, the following technical scheme is adopted in the application:

the utility model provides a control device, includes casing, actuating mechanism and drive mechanism, actuating mechanism's at least part and drive mechanism's at least part is located the casing, actuating mechanism with the drive mechanism transmission is connected, drive mechanism includes output gear, control device includes the base plate, the base plate is located the casing, the casing has first through-hole, output gear is located at least part first through-hole, the base plate has the second through-hole, first through-hole with the central axis coincidence of second through-hole or tend to the coincidence, output gear is located at least part in the second through-hole, the base plate with casing fixed connection.

An electric valve comprises a control device, a valve core, a valve body assembly and a valve rod, wherein the control device is fixedly connected with the valve body assembly, the valve core is positioned in a valve body cavity formed by the valve body assembly, one end of the valve rod is in transmission connection with the control device, the other end of the valve rod is in transmission connection with the valve core, the valve body assembly is provided with at least one circulation channel used for being communicated with the outside, the valve core comprises an inner channel, the electric valve drives the valve core to rotate through the control device, so that the inner channel of the valve core is communicated and not communicated with the circulation channel or is selectively communicated and not communicated with one of the circulation channels, and the control device is the control device.

The application provides a controlling means and motorised valve including this controlling means, controlling means includes base plate and casing, a part of output gear is located the first through-hole of casing, another part of output gear is located the second through-hole of base plate, can restrict output gear motion through setting up the base plate, the second through-hole coincides or tends to the coincidence with first through-hole the central axis, first through-hole is provided with the axiality that does benefit to between assurance base plate and the output gear with the second through-hole alignment promptly, and base plate and casing fixed connection, be favorable to guaranteeing the axiality of output gear and casing, improve the stability of motorised valve.

Drawings

Figure 1 is a schematic cross-sectional view of a first embodiment of an electrically operated valve;

FIG. 2 is a schematic perspective view of the control device of FIG. 1;

FIG. 3 is a schematic perspective view of the control device of FIG. 1 without the cover;

FIG. 4 is a schematic perspective view of the control device shown in FIG. 1 without the upper cover, the circuit board and the potentiometer;

FIG. 5 is a perspective view of the lower housing of FIG. 1;

FIG. 6 is a schematic perspective view of the motor shown in FIG. 3;

FIG. 7 is a cross-sectional view of the motor of FIG. 6;

FIG. 8 is a schematic bottom view of the motor of FIG. 6;

FIG. 9 is a schematic perspective view of the substrate shown in FIG. 1;

FIG. 10 is a schematic diagram of a backside structure of the substrate shown in FIG. 9;

FIG. 11 is a perspective view of the output gear of FIG. 1;

FIG. 12 is a cross-sectional structural view of the output gear of FIG. 11;

FIG. 13 is a schematic perspective view of an angle at which the output gear mates with the base plate;

FIG. 14 is a schematic perspective view of another angle of the output gear mated to the base plate;

fig. 15 is a schematic perspective view of the potentiometer and the circuit board;

fig. 16 is a sectional view (including the upper lid) taken along the section a-a shown in fig. 3.

Detailed Description

The utility model will be further described with reference to the following figures and specific examples:

in the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1-16, fig. 1-16 illustrate a first embodiment of the control device of the present application applied to an electrically operated valve, which may be applied to a vehicle thermal management system or a home thermal management system, which includes a refrigerant system and a coolant system for controlling the opening and closing of flow paths and/or regulating the flow rate in the system. The electric valve 100 comprises a control device 1, a valve body assembly 2, a valve core 3 and a valve rod 4, wherein the valve body assembly 2 is provided with a valve body cavity 20, the valve core 3 is positioned in the valve body cavity 20, the valve core 3 in the embodiment can be a spherical or quasi-spherical or cylindrical or quasi-cylindrical valve core, the control device 1 is fixedly connected with the valve body assembly 2, one end of the valve rod 4 is in transmission connection with the control device 1, the other end of the valve rod 4 is in transmission connection with the valve core 3, the control device 1 outputs torque to the valve rod 4, and the valve rod 4 drives the valve core 3 to rotate together. The spool 3 is provided with an inner passage 31, and the valve body assembly 2 is provided with at least two

flow passages

21,22 for communication with the outside. The electric valve 100 controls the rotation of the valve spool 3 through the control device 1, so that the inner passage 31 of the valve spool 3 is communicated and not communicated with the

flow passages

21,22 of the valve body assembly 2 or selectively communicated and not communicated with one of the

flow passages

21,22, thereby switching the flow path of the electric valve 100.

Referring to fig. 1-4, the control device 1 includes a housing, a driving mechanism and a transmission mechanism 14, the housing includes an upper cover 11 and a lower housing 12, the upper cover 11 and the lower housing 12 are respectively formed by injection molding, and the upper cover 11 is hermetically connected with the lower housing 12. The control device 1 has a control chamber 10, the control chamber 10 being located in a housing, the drive mechanism and at least part of the gear mechanism 114 being located in the control chamber 10. Adopt motor 13 in this embodiment as actuating mechanism and be used for providing drive power, motor 13 is connected with drive mechanism 14 transmission, and drive mechanism 14 is connected with valve rod 4 transmission, and motor 13 can drive valve rod 4 through drive mechanism 14 and rotate. Referring to fig. 5, the lower housing 12 includes a first through hole 121, the first through hole 121 penetrates the lower housing 121 along the axial direction of the electric valve 100, the first through hole 121 is communicated with the control chamber 10 and defines an axial direction OO' of the electric valve 100 (in the embodiment, the axial direction of the control device is the same as or parallel to the axial direction of the electric valve), with respect to the control chamber 10, the direction away from the upper cover 11 is downward, the direction close to the upper cover 11 is upward, and the first through hole 121 is located at the bottom of the lower housing 12. Referring to fig. 1, at least a portion of the transmission mechanism 14 is located in the first through hole 121, and at least a portion of the valve rod 4 is also located in the first through hole 121 and is in transmission engagement with the transmission mechanism 14.

Referring to fig. 1 and 3, the control device 1 further includes a circuit board 15, the circuit board 15 is located in the control chamber 10, and the circuit board 15 is disposed adjacent to the upper cover 11. Referring to fig. 6-8, the motor 13 includes a stator assembly 131, a rotor assembly 132, a motor shaft 133, and a rotor gear 134, the stator assembly 131 is located at an outer periphery of the rotor assembly 132, the stator assembly 131 is electrically and/or signally connected to the circuit board 15, the motor shaft 133 is located at a middle portion of the motor 13 as a central axis of the motor 13, the rotor assembly 132 can rotate around the motor shaft 133 or rotate together with the motor shaft 133, the motor shaft 133 does not rotate as a rotating shaft in this embodiment, the rotor assembly 132 is in clearance fit with the motor shaft 133, the rotor assembly 132 rotates around the motor shaft 133, and the rotor gear 134 is fixedly connected to the rotor assembly 132, so the rotor gear 134 can rotate together with the rotor assembly 132. The motor 13 further has a base plate 135, the base plate 135 is located below the stator assembly 131, the base plate 135 is fixedly connected with the stator assembly 131, the base plate 135 extends along the radial direction of the motor 13, the middle of the base plate 135 has a third through hole 1351, the motor shaft 133 and the rotor gear 134 pass through the third through hole 1351, the base plate 135 has at least two mounting holes 1352, the lower housing 12 has a first fixing portion 122 corresponding to the mounting holes 1352, a hole portion is arranged in the first fixing portion 122, the hole portion may have threads or not, the control device 1 further includes a first screw 16, the first screw 16 passes through the mounting hole 1352 of the base plate 135 and is in threaded connection with the hole portion of the first fixing portion 122, the motor 13 is fixedly connected with the lower housing 12 by tightening the first screw 16, and if the hole portion does not have threads, the first screw 16 is a self-tapping screw; if the hole portion is threaded, the first screw 16 may be a normal screw. The circuit board 15 controls the stator assembly 131 to be powered on, the stator assembly 131 is powered on to generate an excitation magnetic field, and the rotor assembly 132 rotates under the action of the excitation magnetic field and drives the rotor gear 134 to rotate together. The motor 13 of the present application is a stepper motor, but it is understood that other types of motors are possible, such as a brushless dc motor.

The transmission mechanism 14 may be a gear reduction mechanism, but may be other types of transmission reduction mechanisms. Referring to fig. 4, the transmission mechanism 14 includes at least one reduction gear set and an output gear 145, the number of the reduction gear set may be one or more, the output gear 145 is used for outputting torque according to the actual required transmission ratio, and the rotor gear 134 is in transmission connection with the output gear 145 through the reduction gear set. In the present embodiment, the transmission mechanism 14 has 4 reduction gear sets, which are respectively identified as a first gear set 141, a second gear set 142, a third gear set 143, and a fourth gear set 144, wherein, the rotor gear 134 is meshed with the first gear set 141, the first gear set 141 is meshed with the second gear set 142, the second gear set 142 is meshed with the third gear set 143, the third gear set 143 is meshed with the fourth gear set 144, the fourth gear set 144 is meshed with the output gear 145, thus, when the rotor gear 134 rotates along with the rotor assembly 132, the first gear 141 drives the second gear set 142 to rotate, the second gear set 142 drives the third gear set 143 to rotate, the third gear set 143 drives the fourth gear set 144 to rotate, the fourth gear set 144 drives the output gear 145 to rotate, and the output gear 145 is in transmission connection with the valve rod 4, so as to drive the valve element 3 to rotate.

Referring to fig. 4, 11 and 12, the output gear 145 includes a tooth portion 1451 and a transmission output portion 1452, the tooth portion 1451 is in mesh transmission with the fourth gear set 144, along an axial direction of the output gear 145, in conjunction with fig. 1, the transmission output portion 1452 is located on one side of the tooth portion 1451 close to the valve body assembly 2, the transmission output portion 1452 is used for outputting torque, the transmission output portion 1452 is in fixed connection or limited connection with the valve rod 4, and the transmission output portion 1452 is at least partially located in the first through hole 121 of the lower housing 12. In order to realize the position detection function of the electric valve 100, a position detection module is usually disposed in the control device 1, referring to fig. 1, fig. 3, and fig. 15, in this embodiment, a potentiometer 17 is used as a sensor to realize the position detection function, specifically, the potentiometer 17 may be a carbon film potentiometer, the potentiometer 17 is disposed on a side of the circuit board 15 close to the upper cover 11, the potentiometer 17 is electrically and/or signal connected to the circuit board 15 and is fixedly connected to the circuit board 15, the potentiometer 17 has 4 pins 171, the pins 171 are welded and fixed to the circuit board 15, the potentiometer 17 further has 4 positioning pillars 172, the circuit board 15 has corresponding positioning holes, and the positioning pillars 172 are matched and positioned with the positioning holes. The potentiometer 17 comprises a rotating part 173, the rotating part 173 can rotate circumferentially, the rotating part 173 has an accommodating cavity 170, and the projection profile of the accommodating cavity 170 is D-shaped; the circuit board 15 is provided with a communication hole 151 for communicating with the accommodation chamber 170. The potentiometer 17 is a touch sensor, so the rotating member 173 of the potentiometer 17 is in transmission connection with the output end of the control device 1, i.e., the output gear 145, referring to fig. 11 and 12, the output gear 145 further includes a first matching portion 1453, the transmission output portion 1452 and the first matching portion 1453 are respectively located at two sides of the tooth portion 145, the first matching portion 1453 is located at one side of the tooth portion 1451 close to the upper cover 11, the tooth portion 1451, the transmission output portion 1452 and the first matching portion 1453 are formed into a whole by injection molding, the first matching portion 1453 is at least partially located in the accommodating cavity 170 of the potentiometer 17, and the first matching portion 1453 is in transmission connection with the rotating member 173. When the tooth 1451 of the output gear 145 is in meshing transmission with the fourth gear set 144, the transmission output 1452 and the valve rod 4 are in transmission connection to drive the valve rod 4 to rotate, the first matching portion 1453 drives the rotating component 173 to rotate circumferentially, the valve rod 4 is in transmission connection with the valve core 3 to drive the valve core 3 to rotate, and the rotating angle of the valve core 3 can be fed back by detecting the rotating angle of the output gear 145 to feed back the position of the valve core 3.

In order to ensure the coaxiality requirement of the driving mechanism, the transmission mechanism and other components during the transmission process and improve the stability of the electric valve, please refer to fig. 1, 9, 10, 13 and 14, the control device 1 further includes a substrate 18, the substrate 18 is located in the control chamber 10, and along the axial direction OO' of the electric valve 100, the substrate 18 is located between the tooth portion 1451 and the upper cover 11, further, the substrate 18 is located above the tooth portion 1451 and the transmission output portion 1452 of the output gear 145, and the substrate 18 is located below the circuit board 15. The substrate 18 is formed by injection molding, and the substrate 18 is provided with a reinforcing rib to improve the strength of the substrate. The substrate 18 includes a second through hole 181 and a second fitting portion 182, and the second through hole 181 is located at a middle portion of the substrate 18. The number of the second matching portions 182 may be two or more, in this embodiment, the two second matching portions 182 are respectively located at two ends of the length direction of the substrate 18, the second matching portion 182 has a fourth through hole 1821 axially disposed and penetrating through the substrate 18, along the axial direction of the control device 1, the second matching portion 182 protrudes from the main body of the substrate 18 to the upper cover 11, and the second matching portion 182 forms an accommodating portion 180. As shown in fig. 5, the lower housing 12 further includes second fixing portions 123, the second fixing portions 123 protrude from the bottom of the lower housing 12 toward the upper cover 11, hole portions are provided in the second fixing portions 123, the hole portions may be threaded or not, and the number of the second fixing portions 123 is the same as that of the second matching portions 182. At least part of the second fixing portion 123 is located in the accommodating portion 180 formed by the second matching portion 182, the lower end surface of the second matching portion 182 abuts against the upper end surface of the second fixing portion 123, the substrate 18 is in clearance fit with the tooth portion 1451, the lower end surface of the circuit board 15 abuts against the upper end surface of the second matching portion 182 of the substrate 18, the circuit board 15 has a fifth through hole 152 corresponding to the fourth through hole 1821 of the substrate 18, the control device comprises a second screw 19, the second screw 19 sequentially passes through the fifth through hole 152 of the circuit board 15 and the fourth through hole 1821 of the substrate 18 to be in threaded connection with the second fixing portion 123 of the lower housing 12, and if the hole portion of the second fixing portion 123 has no thread, the second screw 19 is a self-tapping screw. The circuit board 15 and the substrate 18 can be fixedly connected to the lower case 12 by the second screws 19.

Referring to fig. 11 to 14, the first mating portion 1453 of the output gear 145 is partially positioned at the second through hole 181 of the base plate 18, a portion of the first mating portion 1453 passes through the second through hole 181 and is positioned above the base plate 18, a length of the base plate 18 is greater than a tooth diameter of the output gear 145, and a width of the base plate 18 is smaller than a gear diameter of the output gear 145, so that the base plate 18 can be positioned above the tooth portion 1451 without taking up an excessive space. The transmission output part 1452 is at least partially located in the first through hole 121 of the lower housing 12, the first through hole 121 is aligned with the second through hole 181 of the substrate 18, or the central axes of the first through hole 121 and the second through hole 181 are coincident or tend to coincide, the substrate 18 is fixedly connected with the lower housing 12, the output gear 145 can be limited to move towards the direction close to the upper cover 11 by arranging the substrate 18, and the alignment of the first through hole 121 and the second through hole 181 is favorable for reducing the eccentric situation of the output gear in the assembling and/or rotating process, and is favorable for ensuring the coaxiality between the substrate and the output gear, the substrate is fixedly connected with the lower housing, and is favorable for ensuring the coaxiality of the output gear and the lower housing, and the stability of the electric valve is improved.

Referring to fig. 5, the two second fixing portions 123 are further respectively provided with a first positioning circular arc surface 1231, the two first positioning circular arc surfaces 1231 are arranged oppositely, the central axis of the first positioning circular arc surface 1231 is coaxial with the central axis of the first through hole 121, the two first positioning circular arc surfaces 1231 are symmetrical about the central axis of the first through hole 121, and the first positioning circular arc surfaces 1231 are recessed inwards from the outer surface of the second fixing portion 123. Correspondingly, referring to fig. 10 and 14, the second engaging portion 182 of the substrate 18 also has a second positioning arc surface 1822 engaged with the first positioning arc surface 1231, the second positioning arc surface 1822 is located on the inner wall of the accommodating portion 180 formed by the second engaging portion 182, the second positioning arc surface 1822 is matched with the arc of the first positioning arc surface 1231, and the second positioning arc surface 1822 is attached to the first positioning arc surface 1231 in combination with fig. 1. Second fixed part 123 has not only played the effect of fixed baseplate 18 and circuit board 15 in this embodiment, still played the positioning action through setting up first location arc surface 1231, the location cooperation of second location arc surface 1822 through first location arc surface 1231 and baseplate 18, first location arc surface 1231 is coaxial with the center pin of first through-hole 121, be favorable to guaranteeing the axiality of baseplate 18 and first through-hole 121, output gear 145 and the coaxial setting of first through-hole 121, thereby be favorable to guaranteeing the axiality of baseplate 18 and output gear 145, and baseplate 18 passes through second screw 19 fixed connection with lower casing 12, therefore can further guarantee the axiality of output gear 145 and lower casing 12.

Referring to fig. 3 and fig. 15, in the embodiment, since the potentiometer 17 is used as the position detection module, and the potentiometer 17 is a contact sensor, which has a high requirement on the coaxiality, when the coaxiality between the potentiometer 17 and the output gear 145 is poor, a large radial stress is generated on the potentiometer 17, and the problems of breaking of the pin 171 of the potentiometer 17, falling of a welding spot, reduction of the detection accuracy, and the like may be caused by long-term stress, the structure of the output gear 145 is further improved in design in the present application. Referring to fig. 11 to 13, the first engaging portion 1453 of the output gear 145 includes a main body 1453a and 2 or more protruding strips 1453b, in this embodiment, 3 protruding strips 1453b are provided, the main body 1453a and the protruding strips 1453b are integrally formed by injection molding, the main body 1453a is disposed along an axial direction, the main body 1453a is located on a side of the tooth 1451 close to the potentiometer 17, the protruding strips 1453b extend upward from an upper end surface of the main body 1453a along the axial direction, the protruding strips 1453b are located at an end of the first engaging portion 1453 close to the potentiometer 17, a gap is provided between two neighboring protruding strips 1453b, a lower end of each protruding strip 1453b is connected to an upper end surface of the main body 1453a, a gap is provided between an inner peripheral wall and an inner peripheral wall of each protruding strip 1453b, the plurality of protruding strips 1453b are distributed along a circumference of the upper end surface of the main body 1453a, a projection view of the protruding strips 1453b on the upper end surface of the main body 1453a is generally in a C-type, the raised lines 1453b are at least partially located in the accommodating cavity 170 of the rotating part 173 of the potentiometer 17, the outer walls of the raised lines 1453b are abutted to the inner wall of the accommodating cavity 170 formed by the rotating part 173, each raised line 1453b can deflect towards the adjacent raised line 1453b or towards the central axis direction of the output gear 145 under the action of radial stress to generate certain elastic deformation, the radial stress action of the output gear 145 on the rotating part is reduced or eliminated through the elastic deformation, the coaxiality between the output gear 145 and the potentiometer 17 is facilitated, the risks of pin breakage, welding point falling and the like of the potentiometer are reduced, the service life of the potentiometer is prolonged, and the detection accuracy of the potentiometer is improved.

Referring to fig. 5, 7 and 16, the lower housing 12 further has a motor shaft positioning hole 124, one end, i.e., the upper end, of the motor shaft 133 close to the upper cover 11 is fixed to the stator assembly 131 by injection molding, and the lower end of the motor shaft 133 passes through the inner hole of the rotor gear 134 and then is in positioning fit with the motor shaft positioning hole 124. In order to ensure the coaxiality of the motor 13 and the lower housing 12 and prevent the friction between the stator assembly 131 and the rotor assembly 132 caused by the circumferential shaking of the motor 13, thereby affecting the performance of the motor 13, the motor 13 further has a positioning portion 136, the positioning portion 136 is located at one end of the motor 13 far away from the upper cover 11, specifically below the stator assembly 131, the positioning portion 136 extends along the bottom direction of the lower housing 12, the positioning portion 136 is coaxially arranged with the motor shaft 133, the positioning portion 136 is arc-shaped, and at least part of the positioning portion 136 is located in the third through hole 1351 of the bottom plate 135. In this embodiment, the stator assembly 131 includes a frame 1311 and a winding 1312 wound around the frame 1311, the frame 1311 is formed by injection molding, and for convenience of processing, the positioning portion 136 is integrally formed with the frame 1311 of the stator assembly 131 by injection molding. Of course, the positioning portion 136 may be formed by other processing methods, and is not limited to the embodiment. The corresponding lower housing 12 has a third matching portion 125 matching with the positioning portion 136, the third matching portion 125 is an arc groove corresponding to the positioning portion 136 in this embodiment, the third matching portion 125 is disposed coaxially with the motor shaft positioning hole 124, that is, the central axis of the third matching portion 125 coincides with the central axis of the motor shaft positioning hole 124, the arc length radius of the positioning portion 136 is equal to the arc length radius of the third matching portion 125, the arc length of the positioning portion 136 matches with the arc length of the third matching portion 125, the positioning portion 136 is at least partially located in the third matching portion 125 along the axial direction, and the positioning portion 136 is completely located in the third matching portion 125 along the radial direction and abuts against the inner wall of the third matching portion 125. Through the arc-shaped positioning part 136 and the third matching part 125, the circumferential rotation of the motor 13 is limited in a matched positioning mode, the coaxiality of the motor 13 and the lower shell 12 can be guaranteed, the friction between the stator assembly and the rotor assembly caused by circumferential shaking of the motor is reduced, and the stability of the electric valve is facilitated. It is understood that the positioning portion 136 may also be a groove, and the corresponding third matching portion is a protrusion, so as to achieve the positioning function of the present invention.

It should be noted that: although the present invention has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the present invention may be modified and equivalents may be substituted for those skilled in the art, and all technical solutions and modifications that do not depart from the spirit and scope of the present invention should be covered by the claims of the present invention.

Claims

1. A control device comprises a shell, a driving mechanism and a transmission mechanism, wherein at least part of the driving mechanism and at least part of the transmission mechanism are positioned in the shell, the driving mechanism is in transmission connection with the transmission mechanism, the transmission mechanism comprises an output gear, and the control device is characterized in that: the control device comprises a substrate, the substrate is located in the shell, the shell is provided with a first through hole, the output gear is at least partially located in the first through hole, the substrate is provided with a second through hole, the first through hole is overlapped with or tends to be overlapped with the central axis of the second through hole, the output gear is at least partially located in the second through hole, and the substrate is fixedly connected with the shell.

2. The control apparatus of claim 1, wherein: the output gear comprises a transmission output part, a tooth part and a first matching part, the transmission output part and the first matching part are respectively located on two sides of the tooth part, the shell comprises a lower shell and an upper cover, the lower shell is fixedly connected with the upper cover, the first matching part is closer to the upper cover than the transmission output part along the axial direction of the control device, the first through hole is located in the lower shell, at least part of the transmission output part is located in the first through hole, at least part of the first matching part is located in the second through hole along the axial direction of the control device, the substrate is located between the tooth part and the upper cover, and the substrate is in clearance fit with the tooth part.

3. The control apparatus of claim 2, wherein: the base plate comprises two second matching parts, the two second matching parts are respectively located at two ends of the length direction of the base plate, the second matching parts are provided with fourth through holes which are arranged along the axial direction of the base plate and along the axial direction of the control device, the base plate main body protrudes towards the direction of the upper cover, the second matching parts form accommodating parts, the lower shell comprises second fixing parts, the number of the second fixing parts is the same as that of the second matching parts, the bottom of the lower shell protrudes towards the direction of the upper cover, the second fixing parts are provided with hole parts, at least parts of the second fixing parts are located in the accommodating parts, and the lower end faces of the second matching parts are abutted to the upper end faces of the second fixing parts.

4. The control device according to claim 3, characterized in that: the second fixing part comprises a first positioning circular arc surface, the first positioning circular arc surface is inwards sunken from the outer surface of the second fixing part, the central axis of the first positioning circular arc surface is coaxial with the central axis of the first through hole, and the two first positioning circular arc surfaces are oppositely arranged and are symmetrically arranged relative to the central axis of the first through hole; the second cooperation portion has second location arc surface, second location arc surface is located the inner wall of the portion that holds that the second cooperation portion formed, second location arc surface with the radian of first location arc surface is identical, second location arc surface with the laminating of first location arc surface sets up.

5. The control device according to claim 2 or 4, characterized in that: the driving mechanism is a motor, the motor comprises a motor shaft and a positioning portion, the motor shaft is located in the middle of the motor as a central shaft of the motor, the positioning portion is located at one end, away from the upper cover, of the motor, the positioning portion extends towards the bottom of the lower shell, the positioning portion and the motor shaft are coaxially arranged, the lower shell is provided with a third matching portion matched with the positioning portion, and the positioning portion and the third matching portion are matched and positioned to limit circumferential rotation of the motor.

6. The control apparatus of claim 5, wherein: the lower shell is provided with a motor shaft positioning hole, one end of the motor shaft penetrates through an inner hole of the rotor gear and then is in positioning fit with the motor shaft positioning hole, the positioning portion is arc-shaped, the third matching portion is an arc groove matched with the positioning portion, the third matching portion and the motor shaft positioning hole are coaxially arranged, the arc length radius of the positioning portion is equal to that of the third matching portion, the arc length of the positioning portion is matched with that of the third matching portion, the positioning portion is at least partially located in the third matching portion in the axial direction, and the positioning portion is completely located in the third matching portion in the radial direction and is abutted to the inner wall forming the third matching portion.

7. The control apparatus of claim 2, wherein: the control device further comprises a circuit board and a potentiometer, the potentiometer is electrically connected with/connected with signals of the circuit board and fixedly connected with the circuit board, the potentiometer comprises a rotating component, the rotating component is provided with an accommodating cavity, the first matching portion comprises a main body portion and two and more raised lines, the main body portion is located on one side, close to the potentiometer, of the tooth portion, the raised lines extend upwards along the axial direction from the upper end face of the main body portion, a certain gap is formed between the two adjacent raised lines, at least part of each raised line is located in the accommodating cavity, and the outer wall of each raised line is abutted to the inner wall of the accommodating cavity formed by the rotating component.

8. The control device according to claim 7, characterized in that: the potentiometer is provided with a pin, the pin is welded and fixed with the circuit board, the potentiometer is also provided with a positioning column, the circuit board is provided with a corresponding positioning hole, and the positioning column is matched and positioned with the positioning hole; the circuit board is provided with a communicating hole which is used for communicating with the accommodating cavity, and the raised line of the output gear penetrates through the communicating hole and then abuts against the inner wall of the accommodating cavity formed by the rotating component; the control device comprises a second screw, the circuit board is provided with a fifth through hole corresponding to the fourth through hole of the substrate, and the second screw sequentially penetrates through the fifth through hole of the circuit board, the fourth through hole of the substrate and the second fixing part of the lower shell in threaded connection.

9. The control apparatus of claim 5, wherein: the motor comprises a stator assembly, a rotor gear and a bottom plate, wherein the stator assembly is positioned at the periphery of the rotor assembly, a motor shaft is in clearance fit with the rotor assembly, the rotor gear is fixedly connected with the rotor assembly, one end of the motor shaft is fixed with the stator assembly in an injection molding mode, the motor comprises the bottom plate, the bottom plate is provided with a mounting hole, the lower shell comprises a first fixing part corresponding to the mounting hole, a hole part is arranged in the first fixing part, the control device comprises a first screw, and the first screw penetrates through the mounting hole and then is in threaded connection with the first fixing part.

10. The utility model provides an electrically operated valve, includes controlling means, case, valve body subassembly and valve rod, its characterized in that: the control device is fixedly connected with the valve body assembly, the valve core is positioned in a valve body cavity formed by the valve body assembly, one end of the valve rod is in transmission connection with the control device, the other end of the valve rod is in transmission connection with the valve core, the valve body assembly is provided with at least one circulation channel used for being communicated with the outside, the valve core comprises an inner channel, the electric valve drives the valve core to rotate through the control device, so that the inner channel of the valve core is communicated and not communicated with the circulation channel or selectively communicated and not communicated with one of the circulation channels, and the control device is the control device as claimed in any one of claims 1 to 9.