Electronic expansion valve

Abstract

The utility model provides an electronic expansion valve which comprises a valve body and a coil component which are matched in a limiting mode. The peripheral surface of the coil component is provided with at least one positioning surface, and the positioning surface is used for being matched with a mounting structure to limit the relative position of the mounting structure and the coil component in the circumferential direction. According to the scheme, due to the fact that the positioning face is arranged on the peripheral face of the coil component, rotation dislocation of the coil component in the installation process can be avoided, and correct matching of the coil component and the valve body can be guaranteed. And in the automatic mounting process, the mounting structures such as a robot or a mechanical arm can be assembled more easily through the positioning surface, and additional detection and correction steps are not needed, so that the production efficiency is improved, and the production time and the labor cost are reduced.

Description

Technical Field

[0001] This utility model relates to the field of electronic expansion valve technology, and more specifically, to an electronic expansion valve. Background Technology

[0002] Currently, coil components and valve bodies are generally connected manually using a snap-fit ​​method. Because the snap-fit ​​is quite tight, workers need to expend considerable effort to operate it, and the daily workload is large. This results in a significant amount of manpower and time required for manual installation, which not only affects installation efficiency and accuracy but also increases production costs and installation complexity. Furthermore, the outer circumference of the coil components in modern electronic expansion valves is generally designed in a circular shape. While this meets the basic requirements of waterproofing and protecting the coil components to a certain extent, the circular structure makes it difficult to accurately position and install the coil components onto the valve body during installation. Utility Model Content

[0003] This invention provides an electronic expansion valve to solve the problem of difficult positioning of the coil component in the electronic expansion valve during installation in the prior art.

[0004] To address the aforementioned problems, according to one aspect of this utility model, an electronic expansion valve is provided, comprising a valve body and a coil component, wherein the coil component is in a limiting fit with the valve body; the outer peripheral surface of the coil component has at least one positioning surface, which is used to cooperate with a mounting structure to define the relative position of the mounting structure and the coil component in the circumferential direction.

[0005] Furthermore, the positioning surface is a plane and / or a curved surface, and the outer peripheral surface of the coil component has multiple positioning surfaces in the circumferential direction.

[0006] Furthermore, the multiple positioning surfaces of the coil component form a polygonal structure.

[0007] Furthermore, the coil component includes a waterproof structure and a stator assembly, the waterproof structure covering at least a portion of the outer peripheral surface of the stator assembly, and the positioning surface located on the outer peripheral surface of the waterproof structure.

[0008] Furthermore, the waterproof structure is integrally injection molded with the stator assembly as an insert.

[0009] Alternatively, the coil component includes a waterproof structure, a waterproof cover, and a stator assembly, the waterproof structure covering at least a portion of the outer peripheral surface of the stator assembly, and one end of the waterproof cover and the waterproof structure being connected; the coil component has a mounting hole through which the valve body passes, and the waterproof cover covering an opening of the mounting hole; the waterproof structure has a positioning surface, or the waterproof cover has a positioning surface, or the waterproof structure and the waterproof cover each have a positioning surface.

[0010] Furthermore, the waterproof structure includes an upper waterproof shell and a lower waterproof shell, the upper waterproof shell covering the upper part of the outer peripheral surface of the stator assembly, and the lower waterproof shell covering the lower part of the outer peripheral surface of the stator assembly; wherein, when the waterproof structure has a positioning surface, the outer peripheral surface of the upper waterproof shell has a positioning surface, or the outer peripheral surface of the lower waterproof shell has a positioning surface, or the outer peripheral surfaces of the upper waterproof shell and the lower waterproof shell each have a positioning surface.

[0011] Furthermore, the lower waterproof housing has a clearance opening for avoiding the valve body. The upper and lower waterproof housings are connected by welding, snap-fitting, or injection molding, or the upper and lower waterproof housings are integrally injection molded with the stator assembly as an insert.

[0012] Furthermore, there is an annular gap between the upper and lower waterproof shells, and the waterproof structure also includes an encapsulation layer that surrounds the stator assembly and is located within the annular gap; the encapsulation layer may have a positioning surface or no positioning surface; the upper waterproof shell and the encapsulation layer are connected by welding, snap-fitting or injection molding, and the lower waterproof shell and the encapsulation layer are connected by welding, snap-fitting or injection molding.

[0013] Alternatively, the waterproof structure includes an encapsulation layer surrounding the central portion of the stator assembly along its axial direction; wherein, if the waterproof structure has a positioning surface, at least the encapsulation layer has a positioning surface.

[0014] Furthermore, the waterproof structure also includes an upper waterproof shell and a lower waterproof shell. The upper waterproof shell covers the upper part of the outer peripheral surface of the stator assembly, and the lower waterproof shell covers the lower part of the outer peripheral surface of the stator assembly. The upper waterproof shell may or may not have a positioning surface, and the lower waterproof shell may or may not have a positioning surface.

[0015] Furthermore, the coil component also includes a filling structure located within the assembly gap of the stator assembly. The filling structure and the encapsulation layer are integrally injection molded, and the filling structure and the encapsulation layer together form an encapsulation structure.

[0016] Furthermore, the waterproof structure covers the entire outer periphery of the stator assembly, and the waterproof structure and the waterproof cover are either separate structures or an integrated structure.

[0017] Furthermore, the waterproof structure includes an upper waterproof shell that covers the upper part of the outer peripheral surface of the stator assembly. The upper waterproof shell and the waterproof cover are either an integral structure or separate structures.

[0018] Furthermore, when the upper waterproof shell and the waterproof cover are separate structures, the upper waterproof shell and the waterproof cover are welded, interference-fitted, or snap-fitted together.

[0019] Furthermore, the waterproof cover includes a protrusion and a waterproof plate, the waterproof plate covering at least a portion of one end face of the stator assembly, the waterproof plate being connected to one end of the waterproof structure on its circumferential outer wall, the waterproof plate being connected to one end of the protrusion on its circumferential inner wall, and the positioning surface being located on the outer circumferential surface of the protrusion.

[0020] Alternatively, the waterproof cover includes a protrusion with a positioning surface located on the outer peripheral surface of the protrusion; the waterproof structure includes an upper waterproof shell, which includes a waterproof cylinder and a waterproof plate, the waterproof cylinder covering the upper part of the outer peripheral surface of the stator assembly, and the waterproof plate covering at least a portion of one end face of the stator assembly; the waterproof plate is connected to one end of the waterproof cylinder at its circumferential outer wall, and to one end of the protrusion at its circumferential inner wall, or to one end of the protrusion at its outer outer wall.

[0021] Furthermore, the outer wall of the waterproof cover has multiple positioning surfaces in the circumferential direction, and the connection position of two adjacent positioning surfaces has a transition surface; the connection position between the protrusion and the waterproof plate has a transition surface; the connection position between the waterproof plate and the waterproof cylinder has a transition surface.

[0022] By applying the technical solution of this utility model, since the outer peripheral surface of the coil component has a positioning surface, rotational misalignment of the coil component during installation can be avoided, ensuring the correct fit between the coil component and the valve body. Moreover, during automatic installation, the positioning surface makes it easier for installation structures such as robots or robotic arms to complete the assembly operation without the need for additional inspection and calibration steps, thereby improving production efficiency and reducing production time and labor costs. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0024] Figure 1 A schematic diagram of the structure of a coil component provided in one embodiment of the present invention is shown;

[0025] Figure 2 It shows Figure 1 A sectional view;

[0026] Figure 3 It shows Figure 1 A structural diagram of the upper and middle waterproof shells and the waterproof cover;

[0027] Figure 4 It shows Figure 3 A sectional view;

[0028] Figure 5 A schematic diagram of the structure of a coil component provided in one embodiment of the present invention is shown;

[0029] Figure 6 It shows Figure 5 A schematic diagram of the structure of the upper and middle waterproof shells and waterproof caps.

[0030] The above figures include the following reference numerals:

[0031] 100. Stator assembly; 110. Stator housing; 210. Upper waterproof housing; 211. Waterproof cylinder; 220. Lower waterproof housing; 221. Clearance opening; 400. Encapsulation structure; 410. Filling structure; 420. Encapsulation layer; 800. Waterproof cover; 810. Positioning surface; 820. Protrusion; 821. Receiving groove; 830. Waterproof plate. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0033] like Figures 1 to 4 As shown, this utility model provides an electronic expansion valve, including a valve body and a coil component, the coil component being connected to the valve body; the outer peripheral surface of the coil component has at least one positioning surface 810, the positioning surface 810 being used to cooperate with a mounting structure to define the relative position of the mounting structure and the coil component in the circumferential direction.

[0034] In some embodiments, since the outer peripheral surface of the coil component has a positioning surface 810, rotational misalignment of the coil component during installation can be avoided, ensuring proper fit between the coil component and the valve body. Moreover, during automated installation, the positioning surface 810 makes it easier for installation structures such as robots or robotic arms to complete assembly operations without the need for additional inspection and calibration steps, thereby improving production efficiency and reducing production time and labor costs.

[0035] Furthermore, the outer circumferential surface of the coil component has multiple locating surfaces 810, providing more contact surfaces for mating with the mounting structure. This results in multiple possible locating points during installation, enhancing positioning accuracy and avoiding alignment errors caused by a single locating point, thus mitigating the risk of incorrect installation. Moreover, setting the locating surfaces 810 as planar or curved surfaces increases adaptability to different types of mounting structures. For example, planar locating surfaces 810 are suitable for simple crimping tools, while curved locating surfaces 810 help tools achieve precise alignment at specific angles, meeting installation requirements under different environments and needs.

[0036] like Figure 1 As shown, the multiple positioning surfaces 810 of the coil component form a polygonal structure. Compared to circular or simple planar designs, this provides more contact surfaces and a more stable docking area, allowing the coil component to dock more precisely with mounting structures such as robots or robotic arms during installation, avoiding possible rotation or offset. Furthermore, the polygonal geometry provides more uniform support force at various angles, thereby improving the overall structural stability.

[0037] like Figure 5 and Figure 6 As shown, a polygonal structure can be a quadrilateral structure.

[0038] In some embodiments, the polygonal structure can also be a hexagonal structure, an octagonal structure, etc.

[0039] like Figures 1 to 4 As shown, the coil component includes a waterproof structure and a stator assembly 100. The waterproof structure covers at least a portion of the outer peripheral surface of the stator assembly 100, effectively preventing moisture from entering the stator assembly 100, thereby improving the sealing performance of the electronic expansion valve and preventing damage to the stator assembly 100 from impacts. The positioning surface 810 is positioned on the outer peripheral surface of the waterproof structure, ensuring its waterproof function while also providing precise support for mounting structures such as robots or robotic arms, improving positioning accuracy during automated installation.

[0040] like Figures 1 to 4 As shown, the coil component includes a waterproof structure, a waterproof cover 800, and a stator assembly 100. The waterproof structure covers at least a portion of the outer peripheral surface of the stator assembly 100, and one end of the waterproof cover 800 is connected to the waterproof structure. The coil component has a mounting hole through which the valve body passes, and the waterproof cover 800 covers an opening of the mounting hole. The waterproof structure has a positioning surface 810, or the waterproof cover 800 has a positioning surface 810, or both the waterproof structure and the waterproof cover 800 have positioning surfaces 810.

[0041] The waterproof structure can be an integral or separate structure. When the waterproof structure is an integral structure, it can be integrally injection molded with the stator assembly 100 as an insert.

[0042] In some embodiments, the waterproof structure and the waterproof cover 800 respectively cover and enclose the outer peripheral surface of the stator assembly 100 and one opening of the mounting hole, thereby providing better waterproofing and sealing performance and effectively preventing moisture, dust, and other external substances from entering the stator assembly 100. When the positioning surface 810 is located on the waterproof structure or the waterproof cover 800, it can provide precise positioning and a stable mounting surface for the robot or robotic arm and other mounting structures during automated installation, improving the positioning accuracy during automated installation. When the positioning surface 810 is located on both the waterproof structure and the waterproof cover 800, it can not only provide multiple positioning points for the robot or robotic arm and other mounting structures, allowing the mounting structure to flexibly select positioning points according to the needs of the actual installation environment, thus improving installation flexibility, but also allow the coil structure to be adapted to different models of mounting structures, improving the compatibility of the coil structure during installation.

[0043] like Figures 1 to 2 As shown, the waterproof structure includes an upper waterproof shell 210 and a lower waterproof shell 220. The upper waterproof shell 210 covers the upper part of the outer peripheral surface of the stator assembly 100, and the lower waterproof shell 220 covers the lower part of the outer peripheral surface of the stator assembly 100. Wherein, when the waterproof structure has a positioning surface 810, the outer peripheral surface of the upper waterproof shell 210 has a positioning surface 810, or the outer peripheral surface of the lower waterproof shell 220 has a positioning surface 810, or the outer peripheral surfaces of the upper waterproof shell 210 and the lower waterproof shell 220 each have a positioning surface 810.

[0044] In some embodiments, the upper waterproof shell 210 and the lower waterproof shell 220 respectively cover the upper and lower parts of the outer peripheral surface of the stator assembly 100, providing all-round protection for the stator assembly 100, enhancing the overall protective performance, and preventing the stator assembly 100 from being damaged by collisions or other injuries. When the positioning surface 810 is located on the outer peripheral surface of the upper waterproof shell 210 or the lower waterproof shell 220, it can provide precise positioning and a stable mounting surface for the installation structure such as the robot or robotic arm during automated installation, improving the positioning accuracy during automated installation. When the positioning surface 810 is located on the outer peripheral surfaces of the upper waterproof shell 210 and the lower waterproof shell 220 respectively, it can provide multiple positioning points for the installation structure such as the robot or robotic arm, allowing the installation structure to flexibly select positioning points according to the needs of the actual installation environment, improving the flexibility of installation.

[0045] like Figure 2As shown, the lower waterproof housing 220 has a clearance opening 221, which is used to avoid interference between the lower waterproof housing 220 and the valve body, thereby preventing installation difficulties or structural mismatches caused by interference between the lower waterproof housing 220 and the valve body. This avoids additional adjustment work and ultimately improves the efficiency of component installation. The upper waterproof housing 210 and the lower waterproof housing 220 can be integral or separate structures. In some embodiments, when the upper waterproof housing 210 and the lower waterproof housing 220 are separate structures, they can be connected by welding, snap-fitting, or injection molding, ensuring the sealing of the upper waterproof housing 210 and the lower waterproof housing 220 at the connection position. In other embodiments, when the upper waterproof housing 210 and the lower waterproof housing 220 are integral structures, they can be injection molded as an integral upper waterproof housing 210 and lower waterproof housing 220 with the stator assembly 100 as an insert.

[0046] like Figures 1 to 2 As shown, there is an annular gap between the upper waterproof shell 210 and the lower waterproof shell 220. The waterproof structure also includes an encapsulation layer 420, which surrounds the stator assembly 100 and is located within the annular gap. The encapsulation layer 420 has a positioning surface 810, or the encapsulation layer 420 does not have a positioning surface 810. The upper waterproof shell 210 and the encapsulation layer 420 are connected by welding, snap-fitting, or injection molding, and the lower waterproof shell 220 and the encapsulation layer 420 are connected by welding, snap-fitting, or injection molding.

[0047] In some embodiments, the encapsulation layer 420 is located within the annular gap between the upper waterproof shell 210 and the lower waterproof shell 220, and surrounds the stator assembly 100, isolating the stator assembly 100 from the external environment. The encapsulation layer 420, together with the upper and lower waterproof shells 210 and 220, provides dustproof, moisture-proof, and waterproof functions, enhancing the durability and reliability of the coil components. When the encapsulation layer 420 has positioning surfaces, it provides more positioning points for mounting structures such as robots or robotic arms, allowing the mounting structure to flexibly select positioning points according to the actual installation environment requirements, improving installation flexibility. Furthermore, the encapsulation layer 420 is tightly connected to the upper and lower waterproof shells 210 and 220 through welding, snap-fitting, or injection molding, forming a seal that effectively prevents external contaminants such as water from entering the coil components and ensures the sealing of the connection points.

[0048] like Figures 1 to 2As shown, the waterproof structure includes an encapsulation layer 420, which surrounds the central portion of the stator assembly 100 along its axial direction. Where the waterproof structure has a positioning surface 810, at least the encapsulation layer 420 has a positioning surface 810, ensuring that the waterproof structure always has a positioning surface 810, providing positioning for mounting structures such as robots or robotic arms. Furthermore, the positioning surface 810 can be optionally placed at other locations on the waterproof structure according to the needs of the actual installation environment, improving installation flexibility.

[0049] like Figure 1 As shown, the waterproof structure also includes an upper waterproof shell 210 and a lower waterproof shell 220. The upper waterproof shell 210 covers the upper part of the outer peripheral surface of the stator assembly 100, and the lower waterproof shell 220 covers the lower part of the outer peripheral surface of the stator assembly 100. The upper waterproof shell 210 may have a positioning surface 810 or no positioning surface 810, and the lower waterproof shell 220 may have a positioning surface 810 or no positioning surface 810.

[0050] In some embodiments, the upper waterproof shell 210 and the lower waterproof shell 220, by respectively covering the upper and lower parts of the outer peripheral surface of the stator assembly 100, cooperate with the encapsulation layer 420 surrounding the central part of the stator assembly 100 along its axial direction to form an all-around waterproof and sealed structure, improving the overall waterproof and sealing performance. Furthermore, when the encapsulation layer 420 has a positioning surface 810, the positioning surface 810 can be optionally provided on the upper waterproof shell 210 and the lower waterproof shell 220 according to the requirements of the actual installation environment, improving installation flexibility.

[0051] like Figure 2 As shown, the coil component also includes a filling structure 410, which is located within the assembly gap of the stator assembly 100. The filling structure 410 and the encapsulation layer 420 are integrally injection molded, and the filling structure 410 and the encapsulation layer 420 together form an encapsulation structure 400.

[0052] In some embodiments, the stator assembly 100 includes a stator housing 110 and a coil structure located within the stator housing 110, with an assembly gap between the stator housing 110 and the coil structure. A filling structure 410 is injected into the assembly gap of the stator assembly 100. The presence of the filling structure 410 fills the assembly gap, preventing the entry of external contaminants, while simultaneously enhancing the overall structural strength of the coil components. This prevents structural loosening or deformation due to internal voids, ensuring the sealing and stability of the stator assembly 100. Furthermore, the filling structure 410 and the encapsulation layer 420 are integrally injection molded, simplifying the production process and improving the sealing effect and structural strength of the coil components.

[0053] like Figures 1 to 2As shown, the waterproof structure covers the entire outer periphery of the stator assembly 100. The waterproof structure and the waterproof cover 800 are either separate structures or an integral structure. In some embodiments, the waterproof structure and the waterproof cover 800 are an integral injection-molded structure, that is, the waterproof structure and the waterproof cover 800 are integrally injection-molded with the stator assembly 100 as an insert, which has a better sealing effect.

[0054] In some embodiments, the waterproof structure and the waterproof cover 800 are separate structures, and the waterproof structure and the waterproof cover 800 are welded or interference-fitted. Welding or interference fit ensures the sealing of the waterproof structure and the waterproof cover 800 at the connection points.

[0055] like Figures 1 to 4 As shown, the waterproof structure includes an upper waterproof shell 210, which covers the upper part of the outer peripheral surface of the stator assembly 100. The upper waterproof shell 210 and the waterproof cover 800 are an integral structure, or the upper waterproof shell 210 and the waterproof cover 800 are separate structures.

[0056] In some embodiments, the upper waterproof housing 210 covers the upper part of the outer peripheral surface of the stator assembly 100, effectively protecting the upper region of the stator assembly 100. The separate structure of the upper waterproof housing 210 and the waterproof cover 800 provides good flexibility and adjustability, reducing replacement time and difficulty when a part needs to be replaced or repaired. If the upper waterproof housing 210 and the waterproof cover 800 are an integral structure, the number of seams or interfaces at the connection points can be reduced, improving the overall sealing performance.

[0057] Furthermore, when the upper waterproof shell 210 and the waterproof cover 800 are separate structures, they are welded, interference-fitted, or snap-fitted together. In some embodiments, the upper waterproof shell 210 and the waterproof cover 800 are integrally injection-molded structures, which provides a better sealing effect.

[0058] In some embodiments, the upper waterproof shell 210 and the waterproof cover 800 are separate structures, and the upper waterproof shell 210 and the waterproof cover 800 are welded, snap-fitted or interference-fitted to ensure the sealing of the upper waterproof shell 210 and the waterproof cover 800 at the connection position.

[0059] like Figure 2 As shown, the waterproof cover 800 includes a protrusion 820 and a waterproof plate 830. The waterproof plate 830 covers one end face of the stator assembly 100. One end of the waterproof plate 830 is connected to the waterproof structure, and the other end of the waterproof plate 830 is connected to the protrusion 820. The positioning surface 810 is located on the outer peripheral surface of the protrusion 820.

[0060] Optionally, the waterproof plate 830 can be hollow. In this case, the waterproof plate 830 covers one end face of the stator assembly 100. The waterproof plate 830 is connected to one end of the waterproof structure on its circumferential outer wall, and to one end of the protrusion 820 on its circumferential inner wall. The hollow waterproof plate 830 reduces the overall weight of the waterproof cover 800 while maintaining the necessary structural stability. This not only reduces the overall weight of the component but also ensures the mechanical strength of the waterproof cover 800.

[0061] In some embodiments, the structural strength of the waterproof cover 800 is optimized by combining the protrusion 820 and the waterproof plate 830. The protrusion 820 can provide sufficient support so that the waterproof cover 800 can be firmly connected to other components during installation.

[0062] In some embodiments, the waterproof cover 800 includes a protrusion 820, and a positioning surface 810 is located on the outer peripheral surface of the protrusion 820. The waterproof structure includes an upper waterproof shell 210, which includes a waterproof cylinder 211 and a waterproof plate 830. The waterproof cylinder 211 covers the upper part of the outer peripheral surface of the stator assembly 100, and the waterproof plate 830 covers one end face of the stator assembly 100. The waterproof plate 830 is connected to one end of the waterproof cylinder 211 on its circumferential outer wall, and to one end of the protrusion 820 on its circumferential inner wall, or to one end of the protrusion 820 on its outer outer wall. Where the waterproof cover 800 and the waterproof cylinder 211 are separate structures, the waterproof plate 830 and the protrusion 820 are connected by welding, snap-fitting, or interference fitting.

[0063] In some embodiments, the protrusion 820 has a receiving groove 821 that communicates with the mounting hole of the stator assembly 100, which can effectively accommodate the valve body of the electronic expansion valve. This allows one end of the valve body to be quickly and easily placed into the receiving groove 821 through the mounting hole during assembly, without complicated installation steps or additional accessories, thereby improving installation accuracy and reducing operational requirements during installation.

[0064] like Figures 1 to 4 As shown, the outer wall of the waterproof cover 800 has multiple positioning surfaces 810 in the circumferential direction, and the connection position of two adjacent positioning surfaces 810 has a transition surface; the connection position of the protrusion 820 and the waterproof plate 830 has a transition surface; the connection position of the waterproof plate 830 and the waterproof cylinder 211 has a transition surface.

[0065] In some embodiments, hard corners or sharp edges often cause stress to accumulate at the connection point, which can easily lead to material fatigue or cracking. The presence of a transition surface can smoothly connect different components, avoiding the stress concentration problem caused by traditional hard corner connections, and can also increase the aesthetics of the upper waterproof shell 210 and the waterproof cover 800.

[0066] The above description is merely an optional embodiment of this solution and is not intended to limit the solution. Various modifications and variations can be made to this solution by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this solution should be included within the scope of protection of this solution.

[0067] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0068] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as exemplary only and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0069] In the description of this solution, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the attached drawings. It is only for the convenience of describing this solution and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or component referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this solution. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0070] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0071] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this solution.

Claims

1. An electronic expansion valve characterized by, The valve body and the coil component are in position cooperation, the outer circumferential surface of the coil component has at least one positioning surface (810) for cooperating with the mounting structure to define the relative position of the mounting structure and the coil component in the circumferential direction.

2. The electronic expansion valve according to claim 1, characterized in that The positioning surface (810) is a plane and / or a curved surface, and the outer circumferential surface of the coil component has a plurality of positioning surfaces (810) in the circumferential direction.

3. The electronic expansion valve according to claim 2, wherein The plurality of positioning surfaces (810) of the coil component form a polygonal structure.

4. The electronic expansion valve according to claim 1, wherein The coil component comprises a waterproof structure and a stator assembly (100), the waterproof structure covers at least a part of the outer circumferential surface of the stator assembly (100), and the positioning surface (810) is located on the outer circumferential surface of the waterproof structure.

5. The electronic expansion valve according to claim 4, wherein The waterproof structure is integrally injection molded with the stator assembly (100) as an insert.

6. The electronic expansion valve according to claim 1, wherein The coil component comprises a waterproof structure, a waterproof cover (800) and a stator assembly (100), the waterproof structure covers at least a part of the outer circumferential surface of the stator assembly (100), the waterproof cover (800) is connected to one end of the waterproof structure, the coil component has a mounting hole through which the valve body passes, the waterproof cover (800) covers one opening of the mounting hole, and the waterproof structure has the positioning surface (810), or the waterproof cover (800) has the positioning surface (810), or the waterproof structure and the waterproof cover (800) have the positioning surface (810) respectively.

7. The electronic expansion valve according to claim 4 or 6, characterized in that The waterproof structure comprises an upper waterproof shell (210) and a lower waterproof shell (220), the upper waterproof shell (210) covers the upper part of the outer circumferential surface of the stator assembly (100), and the lower waterproof shell (220) covers the lower part of the outer circumferential surface of the stator assembly (100); wherein, in the case that the waterproof structure has the positioning surface (810), the outer circumferential surface of the upper waterproof shell (210) has the positioning surface (810), or the outer circumferential surface of the lower waterproof shell (220) has the positioning surface (810), or the outer circumferential surface of the upper waterproof shell (210) and the outer circumferential surface of the lower waterproof shell (220) have the positioning surface (810) respectively.

8. The electronic expansion valve according to claim 7, characterized in that The lower waterproof shell (220) has an avoiding opening (221) for avoiding the valve body, and the upper waterproof shell (210) and the lower waterproof shell (220) are connected by welding, clamping or injection molding, or the upper waterproof shell (210) and the lower waterproof shell (220) are integrally injection molded with the stator assembly (100) as an insert.

9. The electronic expansion valve according to claim 7, wherein The upper waterproof shell (210) and the lower waterproof shell (220) have an annular gap therebetween, and the waterproof structure further comprises an encapsulation layer (420) surrounding the stator assembly (100) and located in the annular gap; the encapsulation layer (420) has the positioning surface (810) or does not have the positioning surface (810); the upper waterproof shell (210) and the encapsulation layer (420) are connected by welding, clamping or injection molding, and the lower waterproof shell (220) and the encapsulation layer (420) are connected by welding, clamping or injection molding.

10. The electronic expansion valve according to claim 4 or 6, characterized by The waterproof structure comprises an encapsulation layer (420) surrounding the middle part of the stator assembly (100) in the axial direction; wherein, in the case that the waterproof structure has the positioning surface (810), at least the encapsulation layer (420) has the positioning surface (810).

11. The electronic expansion valve according to claim 10, wherein The waterproof structure further comprises an upper waterproof shell (210) and a lower waterproof shell (220), the upper waterproof shell (210) covers the upper part of the outer circumferential surface of the stator assembly (100), and the lower waterproof shell (220) covers the lower part of the outer circumferential surface of the stator assembly (100); wherein, the upper waterproof shell (210) has the positioning surface (810) or does not have the positioning surface (810), and the lower waterproof shell (220) has the positioning surface (810) or does not have the positioning surface (810).

12. The electronic expansion valve according to claim 10, wherein The coil assembly further comprises a filling structure (410) located in the assembly gap of the stator assembly (100), the filling structure (410) and the encapsulation layer (420) are integrally injection molded, and the filling structure (410) and the encapsulation layer (420) constitute an encapsulation structure (400).

13. The electronic expansion valve according to claim 6, wherein The waterproof structure covers the entire outer circumferential surface of the stator assembly (100), and the waterproof structure and the waterproof cover (800) are a split structure or an integral structure.

14. The electronic expansion valve of claim 6, wherein, The waterproof structure comprises an upper waterproof shell (210) covering the upper part of the outer circumferential surface of the stator assembly (100), and the upper waterproof shell (210) and the waterproof cover (800) are an integral structure or a split structure.

15. The electronic expansion valve according to claim 14, wherein In the case that the upper waterproof shell (210) and the waterproof cover (800) are a split structure, the upper waterproof shell (210) and the waterproof cover (800) are welded or interference fit or clamped.

16. The electronic expansion valve according to claim 6, wherein The waterproof cover (800) comprises a protruding portion (820) and a waterproof plate body (830), the waterproof plate body (830) covers at least part of one end surface of the stator assembly (100), the waterproof plate body (830) is connected to one end of the waterproof structure in the circumferential outer wall, the waterproof plate body (830) is connected to one end of the protruding portion (820) in the circumferential inner wall, and the positioning surface (810) is located on the outer circumferential surface of the protruding portion (820).

17. The electronic expansion valve according to claim 6, wherein The waterproof cover (800) comprises a protruding portion (820), and the positioning surface (810) is located on the outer circumferential surface of the protruding portion (820); the waterproof structure comprises an upper waterproof shell (210), the upper waterproof shell (210) comprises a waterproof cylinder (211) and a waterproof plate body (830), the waterproof cylinder (211) covers the upper part of the outer circumferential surface of the stator assembly (100), and the waterproof plate body (830) covers at least part of one end surface of the stator assembly (100); the waterproof plate body (830) is connected to one end of the waterproof cylinder (211) through the outer circumferential wall, the waterproof plate body (830) is connected to one end of the protruding portion (820) through the inner circumferential wall, or the outer circumferential wall of the waterproof plate body (830) is connected to one end of the protruding portion (820).

18. The electronic expansion valve according to claim 17, wherein The outer wall of the waterproof cover (800) has a plurality of the positioning surfaces (810) in the circumferential direction, and the connecting position of two adjacent positioning surfaces (810) has a transition curved surface; the connecting position of the protruding portion (820) and the waterproof plate body (830) has a transition curved surface; The connecting position of the waterproof plate body (830) and the waterproof cylinder (211) has a transition curved surface.

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