Motor fixing structure of an electronic valve

Abstract

The application discloses a motor fixing structure of an electronic valve, which comprises a valve body upper part and an upper end cover, characterized in that at least a first motor fixing mechanism and a second motor fixing mechanism are arranged on the valve body upper part and the upper end cover, and the axes of the first motor and the second motor coincide after installation. One set of electronic shell structure can be applied to the fixing and installation of at least two motors, and the mold opening cost and the research and development period can be greatly saved. The two motors can be different types of motors, such as a stepping motor and a direct current motor; or the two motors can be two different models and sizes of motors in the same type of motor, which can be flexibly adjusted according to the design and use requirements. Meanwhile, the application is not limited to the fixing of two motors, and can also be applied to the fixing of multiple motors, as long as the fixing mechanisms of the motors do not interfere with the installation of other motors.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of new energy vehicle technology, in particular to the field of electronic valve products used in the thermal management system of new energy vehicles, and more particularly to a motor fixing structure of an electronic valve. BACKGROUND

[0002] The existing electronic valve product includes a valve body assembly, a power device and a flow control device. The valve body assembly includes a valve body, an upper end cover, an upper end cover and a connecting pipe. The flow control device includes a valve core arranged in the space between the lower part of the valve body and the upper end cover. The power device includes a circuit board, a driving motor and a speed change mechanism arranged in the space between the upper part of the valve body and the upper end cover. The driving motor mainly includes a step motor and a direct current motor. Since the size of the step motor and the direct current motor is quite different, two different electronic valve shell structures need to be configured to realize the fixation and installation of different motors. Thus, two sets of molds are needed for the electronic valve shell for the direct current motor and the step motor, and the product development cost is high and the development cycle is long. If an electronic valve shell structure can realize the fixation and installation of the step motor and the direct current motor at the same time, the development cost and development cycle of the electronic valve product can be greatly reduced. SUMMARY

[0003] The present application aims to provide a motor fixing structure of an electronic valve to solve the above technical problems existing in the prior art.

[0004] To solve the above problems, the present application adopts the following technical scheme: a motor fixing structure of an electronic valve, including a valve body upper part and an upper end cover, characterized in that at least a first motor fixing mechanism and a second motor fixing mechanism are arranged on the valve body upper part and the upper end cover, and the axes of the first motor and the second motor coincide after installation.

[0005] The motor fixing structure of the electronic valve of the present application can be used for the fixation and installation of at least two kinds of motors with one set of electronic valve body structure, which can greatly save the mold opening cost and development cycle. Among them, the two kinds of motors can be different types of motors, such as step motors and direct current motors; or they can be two different models and sizes of motors in the same type, which can be flexibly adjusted according to the design and use needs. At the same time, the present application is not limited to the fixation of two kinds of motors, but can also be applied to the fixation of multiple kinds of motors, as long as the fixing mechanisms of the motors do not interfere with each other when the motors are installed.

[0006] The present application is applicable to any shape and structure of motor. The conventional electronic valve driving motor is a step motor and a direct current motor. Generally, the step motor is circular in shape, its length is smaller than that of the direct current motor, and its diameter is larger than the width of the direct current motor; the direct current motor is mainly in square or square-like structure, its bottom and top are flat, and its side is flat or arc-shaped.

[0007] The fixed structure of each motor includes front and back end face fixing devices, body fixing devices and bearing fixing devices. The motor is in interference fit with the front and back end face fixing devices; the motor can be in interference fit or clearance fit with the body fixing devices and the bearing fixing devices, so as to self-adjust the position of the motor shaft.

[0008] The first motor is taken as an example of a circular structure, and the first motor fixing mechanism includes front and back end face fixing devices, body fixing devices, bearing fixing devices and anti-rotation devices.

[0009] The front and back end face fixing devices of the first motor fixing mechanism include front and back end limiting surfaces arranged on the upper part and / or the upper end cover of the valve body. Further, an inclined surface is arranged on the front end limiting surface, so that the motor can be guided along the inclined surface until it is clamped in place to form an interference fit.

[0010] The body fixing devices of the first motor fixing mechanism include positioning points, lines or surfaces arranged on the body of the first motor, or directly arranged on the upper part and / or the upper end cover of the valve body.

[0011] The positioning members include but are not limited to positioning blocks, positioning strips, positioning columns, clamping jaws or similar structures, and the number thereof is 1 to multiple, which can be flexibly arranged according to the structure and position of the positioning members.

[0012] Preferably, the positioning members have a profiled groove matching the shape of the body of the first motor. The radius of the profiled groove is equal to or slightly larger than the radius of the first motor.

[0013] The bearing fixing devices of the first motor fixing mechanism include bearing positioning grooves arranged on the upper part and the upper end cover of the valve body.

[0014] The bearing positioning grooves can be two, each of which is matched with the front and back bearings of the first motor. Preferably, the bearing positioning grooves are one, and matched with the front bearing of the first motor. The first motor is reliably fixed on the upper part and the upper end cover of the valve body through the body positioning devices and the front bearing positioning devices, and the rear end of the first motor is left with space for installing the second motor.

[0015] The radius of the bearing positioning grooves is equal to or slightly larger than the radius of the front bearing of the first motor.

[0016] The anti-rotation device of the first motor fixing mechanism comprises a front mounting panel arranged at the front end of the motor, and at least one lug is arranged on the front mounting panel, and a slot matched with the lug is arranged on the upper part of the valve body and / or the upper end cover.

[0017] The second motor has a square structure or a similar square structure, at least has a bottom plane and a top plane, and the second motor fixing mechanism comprises front and rear end face fixing devices, a body fixing device and a bearing fixing device, and the front and rear end face fixing devices are in interference fit with the second motor.

[0018] The front and rear end face fixing devices of the second motor fixing mechanism comprise a front end positioning surface and a rear end positioning surface arranged on the upper part of the valve body and / or the upper end cover. An inclined rib is further arranged on the front end positioning surface, so that the motor can be guided along the inclined rib until it is clamped in place to form an interference fit.

[0019] Preferably, the first motor fixing mechanism and the second motor fixing mechanism share the same front end positioning surface. On the one hand, it can save space, simplify the structure and avoid interference with the positioning surface of other motors during installation of different motors; on the other hand, it can ensure that the axes of different motors coincide.

[0020] The body fixing device of the second motor fixing mechanism comprises positioning points, lines or surfaces matched with the body of the second motor, which are arranged on corresponding positioning members or directly arranged on the upper part of the valve body and / or the upper end cover. The positioning members include but are not limited to positioning blocks, positioning strips, positioning columns or clamping jaws, and the number thereof is 1 to multiple.

[0021] The bearing fixing device of the second motor fixing mechanism comprises a bearing positioning slot arranged on the upper part of the valve body and the upper end cover.

[0022] The bearing positioning slot can be two, respectively matched with the front and rear bearings of the second motor. Preferably, the bearing positioning slot is one, and is matched with the rear bearing of the second motor. The second motor is reliably fixed on the upper part of the valve body and the upper end cover through the body positioning device and the rear bearing positioning device, and the front end of the second motor leaves space for installing the first motor.

[0023] An optimized embodiment: the first motor has a circular structure, a front mounting panel is arranged at the front end of the first motor, and a pair of lugs is symmetrically arranged on the front mounting panel; a front end positioning surface, a rear end positioning surface of the first motor, a body profiling slot of the first motor, a front bearing positioning slot of the first motor and a slot matched with the lug are arranged on the upper part of the valve body and the upper end cover.

[0024] The second motor is a square-like structure, having a bottom plane and a top plane, and the top plane and the side plane are connected by a circular arc plane; the upper part of the valve body is provided with a rear end positioning surface of the second motor, a pair of convex strips matched with the bottom of the body of the second motor and a rear bearing positioning groove of the second motor; the upper end cover is provided with a rear end positioning surface of the second motor, a pair of claws matched with the circular arc transition surface of the body of the second motor and a rear bearing positioning groove of the second motor.

[0025] The front end positioning surface on the upper part of the valve body and the upper end cover is used as a common positioning surface of the first motor and the second motor, and is further provided with a bevel rib, forming a front and rear interference fit.

[0026] Another optimized embodiment: the first motor is a circular structure, and a front mounting panel is arranged at the front end of the first motor, and a pair of lugs are symmetrically arranged on the front mounting panel; the upper part of the valve body and the upper end cover are both provided with a front end positioning surface, a rear end positioning surface of the first motor, a first motor body profiling groove, a first motor front bearing positioning groove and a slot matched with the lug;

[0027] The second motor is a square-like structure, having a bottom plane and a top plane; the upper part of the valve body is provided with a rear end positioning surface of the second motor, a convex platform matched with the bottom of the body of the second motor and a rear bearing positioning groove of the second motor; the upper end cover is provided with a rear end positioning surface of the second motor, a group of convex columns matched with the top surface of the body of the second motor and a rear bearing positioning groove of the second motor;

[0028] The front end positioning surface on the upper part of the valve body and the upper end cover is used as a common positioning surface of the first motor and the second motor, and is further provided with a bevel rib, forming a front and rear interference fit.

[0029] The motor fixing structure is made of a plastic part. The elasticity of the plastic part itself can make the motor and the fixing structure form good contact and cooperation. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of a stepping motor.

[0031] Figure 2 It is a structural schematic diagram of a valve body of the application.

[0032] Figure 3 It is a structural schematic diagram of a motor fixing mechanism part of the upper part of the valve body.

[0033] Figure 4 It is a structural schematic diagram of another view of the motor fixing mechanism part of the upper part of the valve body.

[0034] Figure 5 It is a schematic diagram of the front end surface of the cooperation of the stepping motor and the motor fixing mechanism of the upper part of the valve body.

[0035] Figure 6 is the rear end surface diagram of the motor fixing mechanism of the stepper motor cooperating with the upper part of the valve body.

[0036] Figure 7 is the structure diagram of the upper end cover.

[0037] Figure 8 is the structure diagram of the motor fixing mechanism part of the upper end cover.

[0038] Figure 9 is the diagram of the motor fixing mechanism of the stepper motor cooperating with the upper end cover.

[0039] Figure 10 is the installation and fixing diagram of the DC motor.

[0040] Figure 11 is the installation and fixing diagram of the front end of the DC motor and the upper part of the valve body.

[0041] Figure 12 is the installation and fixing diagram of the rear end of the DC motor and the upper part of the valve body.

[0042] Figure 13 is the structure diagram of the first motor body positioning member adopting two strip-shaped bodies in the embodiment.

[0043] Figure 14 is the structure diagram of the first motor body positioning member adopting an integral structure in the embodiment.

[0044] Figure 15 is the structure diagram of the valve body part in the second embodiment.

[0045] Figure 16 is the assembly diagram of the first motor and the upper part of the valve body.

[0046] Figure 17 is the assembly diagram of the second motor and the upper part of the valve body.

[0047] Figure 18 is the structure diagram of the upper end cover part in the second embodiment.

[0048] Figure 19 is the assembly diagram of the first motor and the upper end cover.

[0049] Figure 20 is the assembly diagram of the second motor and the upper end cover.

[0050] In the figure, 1 is the upper part of the valve body, 2 is the upper end cover, 3 is the first motor, 4 is the second motor, 5 is the fixing structure in the upper part of the valve body, and 6 is the fixing structure in the upper end cover.

[0051] 301 - front mounting panel of the first motor, 302 - lug on the front mounting panel, 303 - lug on the front mounting panel, 304 - front bearing of the first motor;

[0052] 401 - front bearing of the second motor, 402 - rear bearing of the second motor;

[0053] 501 - front positioning member, 502 - first motor body positioning member, 503 - rear end positioning member of the first motor, 504 - second motor body positioning member, 505 - rear end positioning member of the second motor, 506 - rear bearing positioning member of the second motor, 507 - front bearing positioning member of the first motor, 508 - front bearing positioning slot of the first motor, 509 - first motor body profiling slot, 510 - second motor body positioning surface, 511 - rear end positioning surface of the first motor, 512 - rear end positioning surface of the second motor, 513 - rear bearing positioning slot of the second motor, 514 - inclined rib position, 515 - front end positioning surface of the motor, 516 - slot, 517 - base;

[0054] 601 - front bearing positioning slot of the first motor, 602 - front bearing positioning member of the first motor, 603 - front end positioning surface of the motor, 604 - inclined rib position, 605 - slot, 606 - first motor body profiling slot, 607 - second motor body positioning member, 608 - rear end positioning surface of the second motor, 609 - rear bearing positioning member of the second motor, 610 - rear bearing positioning slot of the second motor, 611 - rear end positioning surface of the first motor, 612 - groove. DETAILED DESCRIPTION

[0055] Hereinafter, the present application will be further defined with reference to the drawings and specific embodiments.

[0056] In the description of the present application, the directions or positions indicated by "up", "down", "left", "right", "top", "bottom" and the like are based on the direction or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and thus cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus cannot be understood as limiting the present application.

[0057] Figures 1-12 is a structural schematic diagram of a typical embodiment of a motor fixing structure of an electronic valve of the present application. In the embodiment, the first motor 3 is a stepping motor, and the second motor is a direct current motor. The two kinds of motors are placed in the motor fixing mechanism in the upper end cover 2 and the valve body upper part 1, and after the upper end cover and the valve body upper part are fixed, the motors are reliably fixed.

[0058] Referring to Figure 1The step motor 3 is of a circular structure. In order to better fix the step motor 3, a front mounting panel 301 is arranged at the front end.

[0059] With reference to Figure 2 The motor fixing structure of the electronic valve comprises a fixing structure 5 arranged in the upper part of the valve body and a fixing structure 6 arranged in the upper end cover.

[0060] With reference to Figure 3 and Figure 4 The fixing structure 5 comprises a first motor positioning mechanism and a second motor positioning mechanism arranged on the inner surface of the upper part 1 of the valve body.

[0061] The first motor positioning mechanism comprises a first motor front bearing positioning member 507, a front end positioning member 501, a first motor body positioning member 502 and a first motor rear end positioning member 503 arranged in sequence.

[0062] The first motor front bearing positioning member 507 is arranged above the front end positioning member 501 and has a bearing positioning groove 508. The bearing positioning groove 508 is of a semicircular structure and has a radius equal to or slightly greater than that of the first motor front bearing.

[0063] The front end positioning member 501 has a positioning surface 515 matched with the front end of the first motor and is further provided with a bevel rib 514. An insertion groove 516 matched with the lug 303 on the first motor mounting plate is arranged inside the positioning surface 515.

[0064] The first motor rear end positioning member 503 has a positioning surface 511. The first motor is in interference fit with the front end positioning surface 515 and the rear end positioning surface 511 through the bevel rib 514.

[0065] The first motor body positioning member 502 has a profiling groove 509 matched with the shape of the first motor body. The inner surface of the profiling groove is a semicircular positioning surface. In the embodiment, the positioning member 502 is of an I-shaped structure, which can reduce the material usage while meeting the positioning requirements. In another embodiment, the positioning member 502 can also be composed of two strip-shaped bodies, each of which has a profiling groove 509 of the same shape, as shown in Figure 13 In yet another embodiment, the positioning member 502 is an integral or structure, as shown in Figure 14

[0066] The profiling groove 509 can also be a circular arc surface, such as a 1 / 4 circular arc surface. The profiling groove 509 can also be composed of two circular arc surfaces.

[0067] With reference to Figure 5 ​And Figure 6 The first motor 3 is put into the motor fixing structure in the upper part of the valve body, so that the front and rear end faces of the first motor are matched with the front end positioning face 515 and the rear end positioning face 511 respectively, the front bearing of the first motor is matched with the front bearing positioning groove 508, and the body of the first motor is matched with the profiling groove 509.

[0068] In combination Figure 9 The second motor 4 is a square-like structure, has a bottom plane and a top plane, and the top plane and the side face are connected by a circular arc face. The length L2 of the second motor is 25±0.2mm, the width W2 is 18.2±0.15mm, the height H is 18.2±0.15mm, the radius R of the circular arc transition face between the top plane and the side face is 6.2mm, and the bearing diameter is 5±0.1mm.

[0069] The length of the second motor 4 is greater than the length of the first motor 3, the length and the width are less than the diameter of the first motor 3, and the diameters of the front and rear bearings are less than the bearing diameter of the first motor 3.

[0070] The second motor positioning mechanism includes the motor front end positioning face 515, the second motor body positioning member 504, the second motor rear end positioning member 505 and the second motor rear bearing positioning member 506 which are sequentially arranged on the inner surface of the upper part of the valve body.

[0071] The motor front end positioning face 515 is a shared positioning face of the first motor 3 and the second motor 4.

[0072] The second motor body positioning member 504 is a pair of convex strips. The convex strip surface has a second motor body positioning face 510. The second motor body positioning face 510 is a plane matched with the bottom of the second motor body.

[0073] The second motor rear end positioning member 505 is provided with a second motor rear positioning face 512. The front end face of the convex strip can also be used as the rear end positioning face of the first motor. In another embodiment, the second motor rear end positioning member 505 can be a square convex block, as shown in Figure 13 In yet another embodiment, the second motor rear end positioning member 505 is a group of convex columns, as shown in Figure 14

[0074] The second motor rear bearing positioning member 506 is arranged above the second motor rear end positioning member 505 and has a second motor rear bearing positioning groove 513 matched with the shape of the bearing.

[0075] In the embodiment, the positioning members can be independent of each other, so that they can be connected front and rear or up and down according to the set positions.

[0076] Referring to Figure 7 and​Figure 8 The fixing structure 6 in the upper end cover includes a first motor fixing structure and a second motor fixing structure arranged on the inner surface of the upper end cover 2.

[0077] The first motor fixing structure includes a first motor front bearing positioning member 602, a motor front end positioning surface 603, a first motor body anti-form groove 606 and a first motor rear end positioning surface 611 arranged in sequence.

[0078] The first motor front bearing positioning member 602 has a bearing positioning groove 601. The bearing positioning groove 601 is a semicircular structure, and the radius thereof is equal to or slightly greater than the radius of the first motor front bearing.

[0079] The first motor body anti-form groove 606 is a semicircular groove arranged on the upper end cover. The front and rear end surfaces of the first motor body anti-form groove 606 respectively constitute the motor front end positioning surface 603 and the first motor rear end positioning surface 611. The motor front end positioning surface 603 is provided with an inclined rib 604. The inner side of the motor front end positioning surface 603 is further provided with a slot 605 matched with the lug 304 on the first motor mounting plate.

[0080] The second motor positioning mechanism includes a motor front end positioning surface 603, a second motor body positioning member 607, a second motor rear end positioning surface 608 and a second motor rear bearing positioning member 609 arranged in sequence on the inner surface of the upper end cover.

[0081] The motor front end positioning surface 603 is a shared positioning surface for the front ends of the first motor and the second motor.

[0082] The second motor body positioning member 607 is a pair of claws, which respectively clamp the arc transition surfaces of the left and right shoulder portions of the second motor.

[0083] The second motor rear end positioning surface 608 is the rear wall surface of the groove 612 arranged on the upper end cover.

[0084] The second motor rear bearing positioning member 609 is provided with a second motor rear bearing positioning groove 610 matched with the shape of the bearing.

[0085] Referring to Figure 10 The second motor 4 is assembled in the following steps:

[0086] 1. The second motor 4 is placed in the fixing structure on the upper part of the valve body, so that the front and rear end surfaces of the second motor are matched with the front end positioning surface 515 and the rear end positioning surface 512 respectively, the rear bearing of the second motor is matched with the rear bearing positioning groove 513, and the bottom plane of the second motor is matched with the positioning surface 510 of the convex strip.

[0087] 2. Install the upper end cover 2 on the second motor 4 so that the front and rear end faces of the second motor respectively match the front end positioning surface 603 and the rear end positioning surface 608 of the upper end cover, the rear bearing of the second motor matches the rear bearing positioning groove 610 of the upper end cover, and the shoulder of the second motor matches the pair of claws 607 of the upper end cover.

[0088] 3. Fix the upper end cover 2 to the upper part 1 of the valve body, and the second motor 4 can be securely fixed.

[0089] Reference Figure 11 and Figure 12 When the second motor 4 is installed, its front bearing can still be placed in the first motor front bearing positioning groove 508 on the upper part of the valve body. Since the bearing diameter of the second motor is smaller than the bearing diameter of the first motor, no interference will occur.

[0090] At the same time, the size of the first motor body profiling groove in the upper part of the valve body should also avoid interference with the second motor body. If necessary, two or more arc surfaces can be used.

[0091] The valve body upper portion 1, the upper end cover 2 and the motor fixing structure arranged thereon are all made of plastic parts.

[0092] Reference Figures 15-20 , another typical embodiment of the motor fixing structure of an electronic valve of the present invention. Figures 1-12 The implementation differs in that:

[0093] The second motor 4 is in a quasi-square structure, having a bottom plane, a top plane, and arc surfaces on both sides.

[0094] All positioning components within the upper portion of the valve body are integrated into a base 517. Base 517 is fixed to the inner surface of the upper portion 1 of the valve body. Base 517 and the upper portion 1 of the valve body can also be integrally injection molded. The rear section of base 517 is a flat surface, with the flat surface forming the second motor body positioning surface 510. The front section of base 517 defines a first motor body contour groove 509. The front and rear end surfaces of first motor body contour groove 509 serve as the front and rear end positioning surfaces 515 and 511 of the first motor, respectively.

[0095] The second motor body positioning member of the upper end cover is a group of positioning protrusions 607.

[0096] The rest of the structure Figures 1-12 The implementation methods are basically the same.

[0097] It should be understood that the above embodiments are merely illustrative of the present invention, rather than limiting the present invention. Any inventions that do not exceed the essential spirit of the present invention shall fall within the scope of protection of the present invention.

Claims

1. An electric motor fixing structure of an electronic valve comprising a valve body upper portion and an upper end cover, characterized in that At least a first motor fixing mechanism and a second motor fixing mechanism are provided on the upper part of the valve body and the upper end cover, and after installation, the axes of the first motor and the second motor coincide; the first motor is a circular structure, and the first motor fixing mechanism includes front and rear end face fixing devices, a fuselage fixing device, a bearing fixing device and an anti-rotation device, and the front and rear end face fixing devices are interference fit with the first motor; the front and rear end face fixing devices of the first motor fixing mechanism include a front end positioning surface and a rear end positioning surface provided on the upper part of the valve body and / or the upper end cover; the second motor is a square structure or a quasi-square structure, at least having a bottom plane and a top plane, and the second motor fixing mechanism includes front and rear end face fixing devices, a fuselage fixing device and a bearing fixing device, and the front and rear end face fixing devices are interference fit with the second motor; the front and rear end face fixing devices of the second motor fixing mechanism include a front end positioning surface and a rear end positioning surface provided on the upper part of the valve body and / or the upper end cover; the first motor fixing mechanism and the second motor fixing mechanism share the same front end positioning surface.

2. The motor fixing structure of an electronic valve according to claim 1, wherein The front end positioning surface is also provided with an inclined rib.

3. The motor fixing structure of an electronic valve according to claim 1, wherein The body fixing device of the first motor fixing mechanism includes a positioning point, positioning line or positioning surface that matches the first motor body. The positioning point, positioning line or positioning surface is set on the corresponding positioning member, or directly opened on the upper part of the valve body and / or the upper end cover.

4. An electronic valve motor securing structure according to claim 3, wherein The positioning surface is formed by a contoured groove adapted to the shape of the body of the first motor, and the radius of the contoured groove is equal to or slightly larger than the radius of the first motor.

5. The motor fixing structure of an electronic valve according to claim 3, wherein The positioning members include but are not limited to positioning blocks, positioning bars, positioning columns or claws, and the number of the positioning members is 1 or more.

6. The motor fixing structure of an electronic valve according to claim 1, wherein The bearing fixing device of the first motor fixing mechanism includes a bearing positioning groove provided on the upper part of the valve body and the upper end cover.

7. An electronic valve motor securing structure according to claim 6, wherein The bearing positioning groove cooperates with the front bearing of the first motor.

8. An electronic valve motor securing structure according to claim 6, wherein The radius of the bearing positioning groove is equal to or slightly larger than the radius of the front bearing of the first motor.

9. The motor fixing structure of an electronic valve according to claim 1, wherein The anti-rotation device of the first motor fixing mechanism includes a front mounting panel arranged at the front end of the motor, the front mounting panel is provided with at least one lug, and the upper part of the valve body and / or the upper end cover is provided with a slot matching the lug.

10. An electronic valve motor securing structure according to claim 9, wherein The body fixing device of the second motor fixing mechanism includes a positioning point, positioning line or positioning surface that matches the second motor body. The positioning point, positioning line or positioning surface is set on the corresponding positioning member, or directly opened on the upper part of the valve body and / or the upper end cover.

11. An electronic valve motor securing structure according to claim 10, wherein The bearing fixing device of the second motor fixing mechanism includes a bearing positioning groove provided on the upper portion of the valve body and the upper end cover.

12. An electric motor fixing structure for an electronic valve according to claim 11, wherein The bearing positioning groove cooperates with the rear bearing of the second motor.

13. The motor fixing structure of an electronic valve according to claim 1, characterized in that: The first motor is a circular structure, and a front mounting panel is arranged at the front end of the first motor, and a pair of lugs are symmetrically arranged on the front mounting panel; a front end positioning surface, a rear end positioning surface of the first motor, a first motor body profiling groove, a first motor front bearing positioning groove and a slot matched with the lug are arranged on the upper part of the valve body and the upper end cover; The second motor is a square structure, and has a bottom plane and a top plane, and a circular arc surface is arranged between the top plane and the side surface; a rear end positioning surface of the second motor, a pair of lugs matched with the bottom of the second motor body and a second motor rear bearing positioning groove are arranged on the upper part of the valve body; a rear end positioning surface of the second motor, a pair of claws matched with the circular arc transition surface of the second motor body and a second motor rear bearing positioning groove are arranged on the upper end cover; The front end positioning surfaces on the upper part of the valve body and the upper end cover are used as the common positioning surfaces of the first motor and the second motor, and an inclined rib is further arranged thereon to form a front-rear interference fit.

14. The motor fixing structure of the electronic valve according to claim 1, characterized in that: The first motor is a circular structure, and a front mounting panel is arranged at the front end of the first motor, and a pair of lugs are symmetrically arranged on the front mounting panel; a front end positioning surface, a rear end positioning surface of the first motor, a first motor body profiling groove, a first motor front bearing positioning groove and a slot matched with the lug are arranged on the upper part of the valve body and the upper end cover; The second motor is a square structure, and has a bottom plane and a top plane; a rear end positioning surface of the second motor, a pair of lugs matched with the bottom of the second motor body and a second motor rear bearing positioning groove are arranged on the upper part of the valve body; a rear end positioning surface of the second motor, a pair of lugs matched with the top surface of the second motor body and a second motor rear bearing positioning groove are arranged on the upper end cover; The front end positioning surfaces on the upper part of the valve body and the upper end cover are used as the common positioning surfaces of the first motor and the second motor, and an inclined rib is further arranged thereon to form a front-rear interference fit.

15. A motor fixing structure for an electronic valve according to any one of claims 1 to 14, characterized in that The motor fixing structure is made of plastic.

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