Coil component and electric valve

Abstract

The utility model provides a coil component and an electrically operated valve, the coil component comprises a stator assembly, a waterproof cover and a connecting piece, and the waterproof cover surrounds at least one part of the stator assembly; one end of the connecting piece is fixedly connected with the waterproof cover, and the other end is used for cooperating with other structures, so that the stator assembly and other structures are relatively fixed. According to the utility model, one end of the connecting piece is fixedly connected with the waterproof cover, so that compared with the existing technical scheme that the connecting piece is directly connected with the stator shell of the stator assembly, the connecting piece does not need to be fixedly connected with the stator shell in a welding or glue filling manner; according to the stator assembly provided by the utility model, the phenomenon that a welding spot at a welding position is easy to loosen or fall off as time goes by is effectively avoided, and the phenomenon that the welding spot looses due to the reduction of the strength of the fixed glue layer is avoided, so that the stator assembly is stably fixed with other structures and long-term reliable work of the stator assembly and a subsequent electric valve is ensured.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and more specifically, to a coil component and an electric valve. Background Technology

[0002] Currently, the positioning clips on electric valves (e.g., electronic expansion valves) used for connecting to external structures are usually fixed to the stator housing by welding or by potting glue.

[0003] However, in the above methods, the positioning cards fixed to the stator housing by welding are prone to corrosion at the welded positions, and the welds are likely to loosen or fall off over time. In the above methods, the positioning cards fixed to the stator housing by potting glue may loosen during the high-temperature operation of the coil structure in the stator assembly due to the decrease in the strength of the fixing glue layer. Therefore, positioning cards fixed by welding or potting glue are prone to loosening, which in turn causes changes in the relative position of the stator assembly and the valve body of the electric valve, leading to stator assembly failure. Utility Model Content

[0004] This invention provides a coil component and an electric valve to solve the problem in the prior art where the positioning clips fixed to the stator housing by welding or potting are prone to loosening, which causes changes in the relative position of the stator assembly and the valve body of the electric valve, leading to stator assembly failure.

[0005] To address the aforementioned problems, according to one aspect of the present invention, a coil component is provided, comprising a stator assembly, a waterproof cover, and a connector, wherein the waterproof cover surrounds at least a portion of the stator assembly; one end of the connector is fixedly connected to the waterproof cover, and the other end is used to cooperate with other structures to fix the stator assembly relative to other structures.

[0006] Furthermore, the waterproof cover includes an upper waterproof shell and a lower waterproof shell, which are respectively disposed on two parts of the stator assembly along the axial direction; the interior of the upper waterproof shell and the interior of the lower waterproof shell together form at least a part of the waterproof cavity; wherein, at least a part of the stator assembly is located inside the waterproof cavity; one end of the connector is fixedly connected to the lower waterproof shell.

[0007] Furthermore, the waterproof cover is formed by injection molding and is fixedly connected to the connector by injection molding.

[0008] Furthermore, a portion of the connector's structure passes through the waterproof cover and abuts against the stator housing of the stator assembly to ground the stator housing.

[0009] Furthermore, the connector has a through hole, a portion of the waterproof cover extends into the through hole and is positioned within the through hole to secure the connector; and / or, the connector includes a boss, the waterproof cover covers the outer periphery of the boss and is positioned within the boss to secure the connector.

[0010] Furthermore, the connector is fixedly connected to the outer wall of the waterproof cover by riveting or snap-fitting.

[0011] Furthermore, the outer wall of the waterproof cover includes a fixing protrusion, and the connector has a fixing hole. The fixing protrusion is fixedly connected to the fixing hole by riveting or snap-fitting.

[0012] Furthermore, the fixing protrusion is made of plastic. When the connector is fixedly connected to the waterproof cover by riveting, the fixing protrusion passes through the fixing hole, and one end of the fixing protrusion undergoes plastic deformation by thermoplasticization to fix the fixing protrusion to the fixing hole.

[0013] Furthermore, the coil component also includes an encapsulation structure that covers at least a portion of the outer periphery of the stator assembly, and the encapsulation structure and the waterproof cover are sealed together.

[0014] Furthermore, the waterproof cover includes an upper waterproof shell and a lower waterproof shell, which are respectively disposed on two parts of the stator assembly along the axial direction; the encapsulation structure is fixedly connected to the upper waterproof shell by welding, snap-fitting or injection molding, and the encapsulation structure is fixedly connected to the lower waterproof shell by welding, snap-fitting or injection molding.

[0015] Furthermore, the connector is fixedly connected to the lower waterproof shell by one of the following methods: injection molding, riveting, or snap-fitting.

[0016] Furthermore, the connector includes a fixing plate and a connecting plate. One end of the fixing plate is fixedly connected to the waterproof cover, and the other end of the fixing plate is connected to one end of the connecting plate. The other end of the connecting plate is used to cooperate with other structures. The extending direction of the fixing plate and the extending direction of the connecting plate form an angle. And / or, the connector is made of metal and the waterproof cover is made of plastic.

[0017] Furthermore, the connecting piece and the waterproof cover are spaced apart from each other on one end face of the stator assembly along the axial direction; the extending direction of the fixing piece is along the axial direction of the stator assembly, and the extending direction of the connecting piece is along the radial direction of the stator assembly.

[0018] Furthermore, the fixing plate has a fixing hole that penetrates the fixing plate, and the outer wall of the waterproof cover includes a fixing protrusion extending radially along the stator assembly. The fixing protrusion is fixedly connected to the fixing hole by riveting or snap-fitting, so that the connecting plate is fixed on the outer periphery of the waterproof cover.

[0019] Furthermore, there are multiple fixing holes, which are spaced apart, and multiple fixing protrusions, which are arranged one-to-one with the multiple fixing holes.

[0020] Furthermore, the waterproof cover is formed by injection molding, and is fixedly connected to the fixing piece of the connector by injection molding.

[0021] Furthermore, the fixing plate has a through hole, a portion of the waterproof cover extends into the through hole and is limited to fit the through hole to fix the connector; and / or, the fixing plate has a boss, the waterproof cover covers the outer periphery of the boss and is limited to fit the boss to fix the connector.

[0022] Furthermore, the connecting piece has a limiting protrusion, and other structures include a plate-like structure with limiting holes or limiting grooves; when the connecting piece is fixedly connected to other structures, a portion of the plate-like structure is located between the connecting piece and the waterproof cover at one end face along the axial direction of the stator assembly, and at least a portion of the limiting protrusion is located in the limiting hole or limiting groove and is limitedly engaged with the inner wall of the limiting hole or limiting groove to fix the connecting piece and the plate-like structure relative to each other.

[0023] According to another aspect of the present invention, an electric valve is provided, including a valve body and a valve body fixing structure. The electric valve includes the aforementioned coil component, and the connecting member and the valve body fixing structure are mutually limiting and cooperating to connect the coil component and the valve body.

[0024] By applying the technical solution of this utility model, this utility model provides a coil component, including a stator assembly, a waterproof cover, and a connector. The waterproof cover surrounds at least a portion of the stator assembly. One end of the connector is fixedly connected to the waterproof cover, and the other end is used to cooperate with other structures so that the stator assembly is relatively fixed to other structures.

[0025] This invention effectively prevents foreign objects from entering the stator assembly by setting a waterproof cover around at least a portion of the stator assembly, thereby ensuring the reliable operation of the coil structure within the stator assembly. By fixing one end of a connector to the waterproof cover, compared to existing techniques where the connector is directly connected to the stator housing, the connector in this invention does not require welding or gluing to the stator housing. This not only effectively avoids the loosening or detachment of welded joints over time but also prevents loosening due to a decrease in the strength of the adhesive layer, thus ensuring the stability of the stator assembly. The robust fixation to other structures ensures the long-term reliable operation of the stator assembly and subsequent electric valves. Furthermore, by providing a connector for fixed connection to the waterproof cover, this invention allows for various connection methods such as welding, snap-fitting, riveting, or injection molding, increasing the selectivity of the connector's fixing method. This enables the connector to adapt to the usage requirements of different electric valve models, facilitating efficient assembly of the connector onto the waterproof cover and effectively improving assembly efficiency. This also facilitates large-scale standardized production. The invention features a simple structure, low cost, and ease of assembly and maintenance, making it suitable for large-scale promotion and use. Attached Figure Description

[0026] 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:

[0027] Figure 1 This diagram shows the external structure of the electric valve provided in Embodiment 1 of the present invention when the connector and the waterproof cover are fixedly connected by injection molding.

[0028] Figure 2 It shows Figure 1 Internal structure diagram;

[0029] Figure 3 A partial structural diagram of the connector provided in Embodiment 1 of this utility model is shown when it is fixedly connected to the waterproof cover by injection molding.

[0030] Figure 4 It shows Figure 3 Internal structure diagram;

[0031] Figure 5 A schematic diagram of the specific structure of the connector provided in Embodiment 1 of this utility model is shown;

[0032] Figure 6 A schematic diagram of the specific structure of the connector provided in Embodiment 2 of this utility model is shown;

[0033] Figure 7A partial structural diagram of the connector provided in Embodiment 3 of this utility model is shown when it is fixedly connected to the waterproof cover by injection molding.

[0034] Figure 8 It shows Figure 7 Internal structure diagram;

[0035] Figure 9 A schematic diagram of the specific structure of the connector provided in Embodiment 3 of this utility model is shown;

[0036] Figure 10 This diagram shows the external structure of the electric valve provided in Embodiment 4 of the present invention when the connector and the waterproof cover are riveted and fixedly connected.

[0037] Figure 11 It shows Figure 10 Internal structure diagram;

[0038] Figure 12 A schematic diagram of the specific structure of the connector provided in Embodiment 4 of this utility model is shown;

[0039] Figure 13 This diagram shows the external structure of the electric valve provided in Embodiment 5 of the present invention when the connector and the waterproof cover are riveted and fixedly connected.

[0040] Figure 14 A schematic diagram of the specific structure of the connector provided in Embodiment 5 of this utility model is shown.

[0041] The above figures include the following reference numerals:

[0042] 100. Stator assembly;

[0043] 200. Waterproof cover; 210. Upper waterproof shell; 220. Lower waterproof shell; 230. Fixing protrusion;

[0044] 300. Connector; 31. Through hole; 32. Boss; 33. Fixing hole; 34. Fixing piece; 35. Connecting piece; 351. Limiting protrusion;

[0045] 400. Encapsulated structure. Detailed Implementation

[0046] 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.

[0047] like Figures 1 to 14 As shown, an embodiment of the present invention provides a coil component, including a stator assembly 100, a waterproof cover 200, and a connector 300. The waterproof cover 200 surrounds at least a portion of the stator assembly 100. One end of the connector 300 is fixedly connected to the waterproof cover 200, and the other end is used to cooperate with other structures so that the stator assembly 100 is relatively fixed to other structures.

[0048] This invention effectively prevents foreign objects from entering the stator assembly 100 by providing a waterproof cover 200 surrounding at least a portion of the stator assembly 100, thereby ensuring the reliable operation of the coil structure within the stator assembly 100. By fixing one end of a connector 300 to the waterproof cover 200, compared to existing solutions where the connector 300 is directly connected to the stator housing of the stator assembly 100, the connector 300 in this invention does not require welding or glue application to the stator housing. This not only effectively avoids the loosening or detachment of welded joints over time but also prevents loosening due to reduced strength of the adhesive layer, thus ensuring the reliable operation of the stator assembly 100. The stable fixation of the stator assembly 100 with other structures ensures the long-term reliable operation of the stator assembly 100 and subsequent electric valves. Furthermore, by providing a connector 300 fixedly connected to the waterproof cover 200, the connector 300 can be connected to the waterproof cover 200 by welding, snap-fitting, riveting, or injection molding, increasing the selectivity of the fixing method and allowing the connector 300 to adapt to the usage requirements of different models of electric valves. This facilitates the efficient assembly of the connector 300 onto the waterproof cover 200, effectively improving assembly efficiency and facilitating subsequent large-scale standardized production. The present invention has a simple structure and low cost, is easy to assemble and maintain, and is suitable for large-scale promotion and use.

[0049] It should be noted that in one specific embodiment of this utility model, the stator assembly 100 does not include the encapsulation structure 400. The stator assembly 100 includes a skeleton, a coil structure formed by winding, a stator shell, and stator plates, etc. The encapsulation structure 400 (e.g., encapsulation layer) is an independent structure from the stator assembly 100.

[0050] like Figure 1 , Figure 2 , Figure 10 , Figure 11 and Figure 13 As shown, the waterproof cover 200 includes an upper waterproof shell 210 and a lower waterproof shell 220, which are respectively disposed on two axial parts of the stator assembly 100; the interior of the upper waterproof shell 210 and the interior of the lower waterproof shell 220 together form at least a part of a waterproof cavity; wherein at least a part of the stator assembly 100 is located inside the waterproof cavity; one end of the connector 300 is fixedly connected to the lower waterproof shell 220.

[0051] It is worth noting that in one specific embodiment of this utility model, the upper waterproof shell 210 and the lower waterproof shell 220 can be an integral or separate structure. When the upper waterproof shell 210 and the lower waterproof shell 220 are an integral structure, they can be integrally injection molded with the stator assembly 100 as an insert. When the upper waterproof shell 210 and the lower waterproof shell 220 are separate structures, they can be injection molded separately and then covered on the outside of the stator assembly 100 by welding, snap-fitting, gluing, etc. Alternatively, the coil component may also have an encapsulation structure 400 (e.g., an encapsulation layer), which at least encapsulates a portion of the outer peripheral surface of the stator assembly 100, and the upper waterproof shell 210 and / or the lower waterproof shell 220 are sealed to the encapsulation structure 400 (e.g., an encapsulation layer).

[0052] The combination of the upper waterproof shell 210 and the lower waterproof shell 220 forms a complete waterproof cavity, which further enhances the waterproof effect and ensures the long-term stable operation of the internal coil structure. The fixed connection between the connector 300 and the lower waterproof shell 220 allows the connector 300 to more firmly fix the coil components during the assembly of the electric valve, avoiding the performance degradation of the electric valve caused by the loosening of the connector 300.

[0053] Specifically, such as Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, the waterproof cover 200 is formed by injection molding and is fixedly connected to the connector 300 by injection molding.

[0054] The injection-molded waterproof cover 200 can precisely match the shape of the stator assembly 100 to form a tight waterproof seal. At the same time, fixing the connector 300 to the waterproof cover 200 by injection molding can improve the connection strength, simplify the assembly process, reduce production costs, and improve the production efficiency and quality of the electric valve.

[0055] Additionally, it is worth noting that: Figures 1 to 9 As shown, in Embodiments 1, 2, and 3 of this utility model, the connector 300 and the waterproof cover 200 are fixedly connected by injection molding; as Figures 10 to 14 As shown, in Embodiments 4 and 5 of this utility model, the connector 300 and the waterproof cover 200 are fixedly connected by riveting or snap-fitting; the injection molding method and the riveting or snap-fitting method are parallel methods, thus forming a total of five embodiments.

[0056] More specifically, in Embodiments 1, 2, and 3 of this utility model, the connector 300 and the lower waterproof shell 220 of the waterproof cover 200 are fixedly connected by injection molding; in Embodiments 4 and 5 of this utility model, the connector 300 and the lower waterproof shell 220 of the waterproof cover 200 are fixedly connected by riveting or snap-fitting.

[0057] like Figure 5 , Figure 6 , Figure 9 , Figure 12 and Figure 13 As shown, the connector 300 includes a fixing piece 34 and a connecting piece 35. One end of the fixing piece 34 is fixedly connected to the outer wall of the waterproof cover 200, and the other end of the fixing piece 34 is connected to one end of the connecting piece 35. The other end of the connecting piece 35 is used to cooperate with other structures. The extending direction of the fixing piece 34 and the extending direction of the connecting piece 35 form an angle.

[0058] It is worth noting that in a specific embodiment of this utility model, the process of molding the waterproof cover 200 and the connector 300 by injection molding is as follows: 1. Preparation stage: Design and manufacture a high-precision mold, which includes the shape of the lower waterproof shell 220 and the reserved installation position of the connector 300; the reserved position of the connector 300 needs to be precisely matched with its shape to ensure a good fit during injection molding; the metal connector 300 is pre-placed in the designated position in the mold, ensuring that the other end of its fixing piece 34 can be accurately aligned and leaving space for cooperation with other structures for subsequent assembly; 2. Injection molding process: Heat the plastic raw material to a molten state to ensure that the plastic can flow fully and fill all detailed areas of the mold, especially the surrounding area of ​​the connector 300; inject the molten plastic into the mold through the nozzle of the injection molding machine, and the plastic will surround the pre-placed connector 300. 0. Flow and fill all details of the mold, including the outer periphery of the fixing piece 34 of the connector 300; after the plastic is filled, a certain pressure needs to be maintained to ensure that the plastic and the connector 300 are tightly bonded; subsequently, the mold and the plastic inside gradually cool, and the plastic solidifies to form the structure of the lower waterproof shell 220, while tightly bonding with the connector 300 to form an integrated structure; 3. Post-processing and inspection: after the plastic is completely cured, open the mold and take out the molded lower waterproof shell 220 and the integrally formed part of the connector 300; strictly inspect the integrally formed part to ensure that there are no defects in the bonding between the plastic and the connector 300, such as bubbles, cracks or areas that are not fully fused; at the same time, check whether the overall dimensions meet the design requirements to ensure the accuracy of the waterproof shell and the connector; after the initial molding is completed, secondary processing may be required, such as trimming and hole processing, to meet specific assembly requirements.

[0059] The advantages of the above embodiments are as follows: 1. Improved stability: Through injection molding, a strong mechanical bond is formed between the connector 300 and the lower waterproof shell 220, avoiding problems such as loosening and corrosion that may be caused by traditional welding or adhesive fixing methods; 2. Simplified assembly: The integrally molded connector 300 and lower waterproof shell 220 reduce subsequent assembly steps, improve production efficiency, and reduce production costs; 3. Enhanced waterproof performance: The injection-molded waterproof shell is tightly integrated with the connector, forming a seamless waterproof cavity, effectively protecting the internal stator assembly 100 and improving the waterproof performance of the electric valve; 4. Improved standardization: The application of injection molding technology enables the assembly of the connector 300 and the lower waterproof shell 220 to achieve standardized and large-scale production, facilitating subsequent mass production and maintenance.

[0060] Through the above-described injection molding process, the connector 300 and the lower waterproof shell 220 form a new type of component with stable structure, good waterproof performance, and easy assembly, which significantly improves the reliability of the electric valve and the level of industrial production.

[0061] like Figure 5 and Figure 6 As shown, the connector 300 has a through hole 31, a portion of the waterproof cover 200 extends into the through hole 31 and is fitted with the through hole 31 to fix the connector 300; and / or, as Figure 9 As shown, the connector 300 includes a boss 32, and a waterproof cover 200 covers the outer periphery of the boss 32 and is matched with the boss 32 to fix the connector 300.

[0062] The design of the through hole 31 and the boss 32 increases the fixing strength between the connector 300 and the waterproof cover 200 during the integral injection molding process, making the fixing between the connector 300 and the waterproof cover 200 more reliable. Through the limiting fit, not only is the fixing strength of the connector 300 improved, but its durability in complex environments is also enhanced. The above design also enables the connector 300 to be positioned more accurately during the assembly of the electric valve, simplifying the assembly steps and improving the assembly efficiency.

[0063] Specifically, such as Figure 7 , Figure 8 and Figure 9 As shown, in Embodiment 3 of this utility model, when the connector 300 and the waterproof cover 200 are fixedly connected by injection molding, a portion of the structure of the connector 300 passes through the waterproof cover 200 and abuts against the stator housing of the stator assembly 100, so that the stator housing is grounded. This arrangement ensures the electrical connection between the stator housing and other structures of the electric valve, helps to form a complete electromagnetic circuit, and improves the electromagnetic performance and stability of the electric valve. At the same time, through the structural cooperation between the connector 300 and the waterproof cover 200, the connector 300 can withstand greater mechanical stress during the operation of the electric valve, avoiding loosening of the connector 300 due to mechanical vibration.

[0064] More specifically: such as Figure 7 , 8 As shown in Figure 9, the boss 32 provided on the connector 300 can be configured to protrude from the inner wall of the waterproof cover 200. After the waterproof cover 200 is installed on the stator assembly 100, the boss 32 and the stator housing of the stator assembly 100 are brought into contact to achieve grounding of the coil component.

[0065] like Figure 10 , Figure 11 , Figure 12 , Figure 13 and Figure 14 As shown, the connector 300 is fixedly connected to the outer wall of the waterproof cover 200 by riveting or snap-fitting.

[0066] Using riveting or snap-fit ​​methods can avoid the heat effects that welding may cause and the strength problems that glue fixation may have, thereby improving the fixing strength and stability between the connector 300 and the waterproof cover 200, ensuring the stable performance of the electric valve during long-term operation; at the same time, it also facilitates the rapid assembly of the connector 300 and the waterproof cover 200, thereby improving the efficiency of subsequent standardized processing.

[0067] like Figure 12 and Figure 14 As shown, the outer wall of the waterproof cover 200 includes a fixing protrusion 230, and the connector 300 has a fixing hole 33. The fixing protrusion 230 is fixedly connected to the fixing hole 33 by riveting or snap-fitting.

[0068] The fixing protrusion 230 and the fixing hole 33 are connected by riveting or snapping, which not only achieves a stable connection between the connector 300 and the waterproof cover 200, but also avoids the thermal stress caused by welding and the possible reduction in strength due to glue fixation, thereby improving the reliability and service life of the electric valve. At the same time, this design simplifies the structure of the connector 300 and the waterproof cover 200, making it easier to process and reduce costs.

[0069] like Figure 10 , Figure 11 and Figure 13 As shown, the fixing protrusion 230 is made of plastic. When the connector 300 is fixedly connected to the waterproof cover 200 by riveting, the fixing protrusion 230 passes through the fixing hole 33. One end of the fixing protrusion 230 undergoes plastic deformation by thermoplasticization so that the fixing protrusion 230 is fixedly connected to the fixing hole 33.

[0070] The plastic fixing protrusion 230 forms a plastic deformation connection with the fixing hole 33 through thermoplastic method, which not only improves the stability of the connection, but also avoids the electrochemical corrosion that may occur in the metal connection, thus improving the corrosion resistance and long-term stability of the electric valve. In addition, the above-mentioned hot riveting processing design based on plastic material also facilitates rapid processing and molding.

[0071] It should be noted that, in a specific embodiment of this utility model, the hot riveting integral molding process is a method combining heating and shaping with riveting fixing technology, used to firmly bond the connector 300 to the plastic waterproof cover 200; the process of hot riveting integral molding of the connector 300 and the lower waterproof shell 220 is as follows: 1. Preparation: Preheat the mold used for hot riveting to a suitable value below the plastic melting temperature to ensure that the plastic does not melt prematurely before molding; confirm that the fixing hole 33 of the fixing piece 34 is aligned with the fixing protrusion 230 to ensure the accuracy and stability of subsequent hot riveting; 2. Hot riveting process: Use a heating tool to heat the fixing protrusion 230 on the plastic outer wall of the lower waterproof shell 220 to a plastic state, and then apply pressure to the heated fixing protrusion 230. The portion passing through the fixing hole 33 forms an enlarged nut shape or other fixing shape, thereby forming a hot riveting structure to ensure a stable connection between the connector 300 and the waterproof cover 200; 3. Cooling and curing: After the thermoplastic deformation is completed, the fixing protrusion 230 cools and solidifies under pressure to form a firm riveting point, at which the connector 300 and the lower waterproof cover 220 are fixedly connected; 4. Post-processing and inspection: Take out the formed part, that is, the structure of the connector 300 and the lower waterproof cover 220 integrally formed; inspect the integrally formed part to ensure that the hot riveting point is free of defects and the connection strength meets the design requirements, and at the same time check the overall dimensional accuracy to ensure that it conforms to the design drawings; perform necessary post-processing on the integrally formed structure, such as removing burrs and grinding, to meet the final assembly requirements.

[0072] Through the hot riveting integrated processing steps described in the above embodiments, a connection structure with high mechanical strength and good waterproof performance is formed between the connector 300 and the lower waterproof shell 220, avoiding the corrosion problems that may be caused by traditional welding and the problem of the strength of glue fixation decreasing over time. In addition, the hot riveting integrated molding technology simplifies the assembly process, improves production efficiency, and reduces maintenance costs caused by weld point or glue failure. It is an effective means to improve assembly efficiency and product stability in the field of electric valve manufacturing.

[0073] like Figure 1 , Figure 2 , Figure 10 , Figure 11 and Figure 13 As shown, the coil component also includes an encapsulation structure 400, which covers at least a portion of the outer periphery of the stator assembly 100, and the encapsulation structure 400 and the waterproof cover 200 are sealed together.

[0074] The encapsulation structure 400 further enhances the protection of the stator assembly 100. Through its sealing cooperation with the waterproof cover 200, it forms a double waterproof and isolation barrier, improving the waterproof performance and durability of the electric valve and ensuring stable operation in harsh environments.

[0075] Specifically, such as Figure 1 , Figure 2 , Figure 10 , Figure 11 and Figure 13 As shown, the waterproof cover 200 includes an upper waterproof shell 210 and a lower waterproof shell 220, which are respectively disposed on two parts of the stator assembly 100 along the axial direction; the encapsulation structure 400 is fixedly connected to the upper waterproof shell 210 by welding, snap-fitting or injection molding, and the encapsulation structure 400 is fixedly connected to the lower waterproof shell 220 by welding, snap-fitting or injection molding.

[0076] The upper waterproof housing 210 and the lower waterproof housing 220 enable the waterproof cover 200 to cover the stator assembly 100. Through multiple fixed connections with the encapsulation structure 400, the assembly flexibility and production efficiency of the electric valve are improved. At the same time, the connection strength between the waterproof cover 200 and the encapsulation structure 400 is enhanced, thereby improving the overall performance and reliability of the electric valve.

[0077] It is worth noting that the connector 300 and the lower waterproof shell 220 can be fixedly connected by one of the following methods: injection molding, riveting, and snap-fit.

[0078] like Figure 5 , Figure 6 , Figure 9 , Figure 12 and Figure 13 As shown, the connector 300 includes a fixing piece 34 and a connecting piece 35. One end of the fixing piece 34 is fixedly connected to the waterproof cover 200, and the other end of the fixing piece 34 is connected to one end of the connecting piece 35. The other end of the connecting piece 35 is used to cooperate with other structures. The extending direction of the fixing piece 34 and the extending direction of the connecting piece 35 form an angle. And / or, the connector 300 is made of metal, and the waterproof cover 200 is made of plastic.

[0079] The design of the fixing piece 34 and the connecting piece 35 allows the connector 300 to be more securely fixed to the waterproof cover 200. At the same time, the combination of the metal connector 300 and the plastic waterproof cover 200 not only improves the connection strength but also avoids the risk of electrochemical corrosion, thereby improving the corrosion resistance and service life of the electric valve.

[0080] like Figure 1 , Figure 2 , Figure 10 , Figure 11 and Figure 13 As shown, the connecting piece 35 and the waterproof cover 200 are spaced apart from each other on one end face along the axial direction of the stator assembly 100; the extending direction of the fixing piece 34 is arranged along the axial direction of the stator assembly 100, and the extending direction of the connecting piece 35 is arranged along the radial direction of the stator assembly 100.

[0081] like Figure 1 , Figure 2 , Figure 10 , Figure 11 and Figure 13 As shown, the fixing plate 34 has a fixing hole 33 that penetrates the fixing plate 34, and the outer wall of the waterproof cover 200 includes a fixing protrusion 230 extending radially along the stator assembly 100. The fixing protrusion 230 is fixedly connected to the fixing hole 33 by riveting or snap-fitting so that the connecting piece 35 is fixed on the outer periphery of the waterproof cover 200.

[0082] The specific arrangement of the connecting piece 35 and the fixing piece 34, as well as the cooperation between the fixing hole 33 and the fixing protrusion 230, allows the connector 300 to be more securely fixed on the waterproof cover 200, improving the stability of the electric valve during operation and avoiding performance degradation caused by loosening of the connector 300.

[0083] Specifically, there are multiple fixing holes 33, which are spaced apart, and there are multiple fixing protrusions 230, which are arranged in a one-to-one correspondence with the multiple fixing holes 33.

[0084] The aforementioned multiple fixing holes 33 and fixing protrusions 230 make the connection between the connector 300 and the waterproof cover 200 more stable, improve the stability of the electric valve during operation, and avoid the risk of loosening that may be caused by a single-point connection; at the same time, the one-to-one correspondence setting also simplifies the assembly process and improves assembly efficiency.

[0085] It should be noted that: the waterproof cover 200 is formed by injection molding and is fixedly connected to the fixing piece 34 of the connector 300 by injection molding; optionally, the fixing piece 34 has a through hole 31, a portion of the waterproof cover 200 extends into the through hole 31 and is limited and engaged with the through hole 31 to fix the connector 300; and / or, the fixing piece 34 has a boss 32, the waterproof cover 200 covers the outer periphery of the boss 32 and is limited and engaged with the boss 32 to fix the connector 300. Through the above design, the connection strength between the waterproof cover 200 and the fixing piece 34 is further improved after injection molding.

[0086] like Figure 1 , Figure 2 , Figure 10 , Figure 11 and Figure 13As shown, the connecting piece 35 has a limiting protrusion 351, and other structures include a plate-like structure with limiting holes or limiting grooves. When the connecting piece 35 is fixedly connected to other structures, a portion of the plate-like structure is located between one end face of the connecting piece 35 and the waterproof cover 200 along the axial direction of the stator assembly 100. At least a portion of the limiting protrusion 351 is located in the limiting hole or limiting groove and is limited and engaged with the inner wall of the limiting hole or limiting groove to fix the connecting piece 35 relative to the plate-like structure.

[0087] The design of the limiting protrusion 351 allows the connecting piece 35 to be positioned more precisely when fixed with other structures, avoiding positional deviations during assembly and improving the assembly accuracy and performance stability of the electric valve. At the same time, the limiting fit also improves the fixing strength between the connecting piece 300 and other structures of the electric valve, ensuring the performance stability of the electric valve during long-term operation. It allows other structures to be fixedly connected to the valve body of the electric valve to fix the coil components and the valve body of the electric valve.

[0088] This utility model also provides an electric valve, which includes a valve body and a valve body fixing structure. The electric valve includes the above-mentioned coil component, and the connecting piece 300 and the valve body fixing structure are matched to limit the connection between the coil component and the valve body.

[0089] The electric valve proposed in this utility model, through the above-mentioned optimized structural design, significantly improves the performance stability, corrosion resistance and service life of the electric valve, can adapt to a wider range of use environments, and enhances the market competitiveness and user satisfaction of the electric valve.

[0090] The specific working process and principle of this utility model will now be described in detail as follows:

[0091] Figure 1 This diagram illustrates the external structure of the electric valve provided in Embodiment 1 of this utility model when the connector and waterproof cover are fixedly connected via injection molding. It shows the structure of the waterproof cover 200 surrounding the stator assembly 100, and the fixed connection method between the connector 300 and the waterproof cover 200, demonstrating the structural design and improved fixing strength of this utility model. The stator assembly 100 is centrally located and tightly surrounded by the waterproof cover 200, which consists of an upper waterproof shell 210 and a lower waterproof shell 220, distributed along the axial direction of the stator assembly 100. Notably, the interiors of the upper waterproof shell 210 and the lower waterproof shell 220 together form a waterproof cavity, ensuring that at least a portion of the stator assembly 100 is protected from external moisture and impurities, thereby protecting its electrical performance. One end of the connector 300 is fixedly connected to the outer wall of the lower waterproof shell 220, while the other end is reserved for cooperation with other structures to achieve the fixation of the stator assembly 100.

[0092] Figure 2 It shows Figure 1 The internal structure diagram further reveals the waterproof cavity structure inside the waterproof cover 200, as well as the way the stator assembly 100 and the waterproof cover 200 are matched, demonstrating the waterproof performance of this utility model and its protective effect on the internal coil structure. Figure 3 and Figure 4 The diagram shows a partial structural schematic of the connector 300 and the waterproof cover 200 when they are fixedly connected by injection molding according to Embodiment 1 of this utility model. It shows in detail the injection molding connection between the connector 300 and the waterproof cover 200. Specifically, it can be combined with structures such as through hole 31 or boss 32, as well as the way they cooperate with the waterproof cover 200, to improve the structural design and fixing strength. Figures 5 to 9 Specific structural diagrams of the connectors in different embodiments are shown, illustrating the design of the connector 300 including the fixing piece 34 and the connecting piece 35, as well as the different shapes of the through hole 31.

[0093] Figures 10 to 14 The diagram illustrates the external structure of the electric valve provided in embodiments four and five of this utility model when the connector is riveted and fixed to the waterproof cover, and the detailed structural diagram of the connector. It shows in detail the riveting and fixing connection between the connector 300 and the waterproof cover 200, including the matching method of the fixing hole 33 and the fixing protrusion 230, demonstrating the structural design and improved fixing strength of this utility model under different fixing methods. The connector 300 includes a fixing piece 34 and a connecting piece 35. One end of the fixing piece 34 is fixedly connected to the outer wall of the waterproof cover 200, and the other end is connected to one end of the connecting piece 35. The fixing piece 34 extends axially along the stator assembly 100, while the connecting piece 35 extends radially along the stator assembly 100, forming a right-angle structure. The fixing piece 34 is provided with a fixing hole 33, and the outer wall of the waterproof cover 200 is equipped with a fixing protrusion 230 extending radially along the stator assembly 100. The fixing protrusion 230 is fixedly connected to the fixing hole 33 by riveting or snap-fitting. This connection method is not only stable but also simplifies the assembly process and reduces production costs. It is worth noting that there can be multiple fixing holes 33, arranged at intervals, corresponding one-to-one with multiple fixing protrusions 230, which enhances the reliability of the connection.

[0094] The coil component and electric valve of this utility model not only solve the problems existing in the fixing methods of the connecting parts in the prior art, such as welding corrosion and loosening caused by reduced glue strength, but also significantly improve the fixing strength, corrosion resistance and standardization of the coil component through optimized structural design, reduce production costs, ensure the stable operation of the electric valve coil in various working environments, and improve the overall performance and service life of the equipment.

[0095] In summary, this utility model provides a coil component and an electric valve. By setting a waterproof cover 200 around at least a portion of the stator assembly 100, this utility model effectively prevents external foreign objects from entering the stator assembly 100, thereby ensuring the reliable operation of the coil structure within the stator assembly 100. By fixing one end of the connector 300 to the waterproof cover 200, compared to existing technical solutions where the connector 300 is directly connected to the stator housing of the stator assembly 100, the connector 300 in this utility model does not need to be fixed to the stator housing by welding or potting. This not only effectively avoids the weld points from loosening or falling off over time, but also avoids loosening due to the decrease in the strength of the fixing adhesive layer. This design ensures the stable fixation of the stator assembly 100 to other structures, guaranteeing the long-term reliable operation of the stator assembly 100 and subsequent electric valves. Furthermore, by providing a connector 300 fixedly connected to the waterproof cover 200, the connector 300 can be connected to the waterproof cover 200 by welding, snap-fitting, riveting, or injection molding, increasing the selectivity of the fixing method. This allows the connector 300 to adapt to the usage requirements of different types of electric valves, facilitating efficient assembly of the connector 300 onto the waterproof cover 200, effectively improving assembly efficiency, and facilitating subsequent large-scale standardized production. This invention has a simple structure and low cost, is easy to assemble and maintain, and is suitable for large-scale promotion and use.

[0096] 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.

[0097] 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 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 merely exemplary 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 drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0098] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0099] 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.

[0100] 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 cannot be construed as limiting the scope of protection of this utility model.

[0101] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A coil component characterized by comprising: The coil assembly comprises a stator assembly (100), a waterproof cover (200) surrounding at least a part of the stator assembly (100), and a connecting piece (300) having one end fixedly connected with the waterproof cover (200) and the other end used for cooperating with other structures to relatively fix the stator assembly (100) with the other structures.

2. The coil component according to claim 1, characterized by The waterproof cover (200) comprises an upper waterproof shell (210) and a lower waterproof shell (220) respectively arranged on two parts of the stator assembly (100) along an axial direction, and the interior of the upper waterproof shell (210) and the interior of the lower waterproof shell (220) jointly form at least a part of a waterproof cavity in which at least a part of the stator assembly (100) is located, and one end of the connecting piece (300) is fixedly connected with the lower waterproof shell (220).

3. The coil assembly of claim 1, wherein, The waterproof cover (200) is formed by injection molding and is fixedly connected with the connecting piece (300) by injection molding.

4. The coil assembly of claim 3, wherein, Part of the structure of the connecting piece (300) penetrates the waterproof cover (200) and abuts against a stator shell of the stator assembly (100) to make the stator shell be grounded.

5. The coil assembly according to claim 3, wherein The connecting piece (300) has a through hole (31) in which a part of the waterproof cover (200) penetrates and is limitedly matched with the through hole (31) to fix the connecting piece (300). The connecting piece (300) has a boss (32) which is covered by the waterproof cover (200) and is limitedly matched with the boss (32) to fix the connecting piece (300).

6. The coil assembly of claim 1, wherein, The connecting piece (300) is fixedly connected with the outer wall of the waterproof cover (200) by riveting or clamping.

7. The coil assembly of claim 6, wherein, The outer wall of the waterproof cover (200) comprises a fixing protrusion (230), and the connecting piece (300) has a fixing hole (33) fixedly connected with the fixing protrusion (230) by riveting or clamping.

8. The coil assembly of claim 7, wherein, The fixing protrusion (230) is made of plastic material, and in the case that the connecting piece (300) is fixedly connected with the waterproof cover (200) by riveting, the fixing protrusion (230) penetrates the fixing hole (33), and one end of the fixing protrusion (230) is plastically deformed by heat molding to fix the fixing protrusion (230) with the fixing hole (33).

9. The coil assembly of claim 1, wherein, The coil assembly further comprises an encapsulation structure (400) covering at least a part of the outer periphery of the stator assembly (100), and the encapsulation structure (400) is sealingly matched with the waterproof cover (200).

10. The coil assembly of claim 9, wherein, The waterproof cover (200) comprises an upper waterproof shell (210) and a lower waterproof shell (220), the upper waterproof shell (210) and the lower waterproof shell (220) are arranged on two parts of the stator assembly (100) along the axial direction respectively; the sealing structure (400) is fixedly connected with the upper waterproof shell (210) by welding, clamping or injection molding, and the sealing structure (400) is fixedly connected with the lower waterproof shell (220) by welding, clamping or injection molding.

11. The coil assembly of claim 10, wherein, The connecting piece (300) is fixedly connected with the lower waterproof shell (220) by one of injection molding, riveting and clamping.

12. The coil assembly of claim 1, wherein, The connecting piece (300) comprises a fixed sheet (34) and a connecting sheet (35), one end of the fixed sheet (34) is fixedly connected with the waterproof cover (200), the other end of the fixed sheet (34) is connected with one end of the connecting sheet (35), and the other end of the connecting sheet (35) is used for cooperating with other structures; wherein the extension direction of the fixed sheet (34) and the extension direction of the connecting sheet (35) have an included angle; and / or the connecting piece (300) is made of metal material, and the waterproof cover (200) is made of plastic material.

13. The coil assembly of claim 12, wherein, The connecting sheet (35) is arranged in correspondence with an end face of the waterproof cover (200) along the axial direction of the stator assembly (100); the extension direction of the fixed sheet (34) is arranged along the axial direction of the stator assembly (100), and the extension direction of the connecting sheet (35) is arranged along the radial direction of the stator assembly (100).

14. The coil assembly of claim 13, wherein, The fixed sheet (34) has a fixed hole (33) penetrating through the fixed sheet (34), the outer wall of the waterproof cover (200) comprises a fixed protrusion (230) extending along the radial direction of the stator assembly (100), and the fixed protrusion (230) is fixedly connected with the fixed hole (33) by riveting or clamping, so that the connecting sheet (35) is fixed on the outer periphery of the waterproof cover (200).

15. The coil assembly of claim 14, wherein, The fixed hole (33) is a plurality of fixed holes (33) arranged at intervals, and the fixed protrusion (230) is a plurality of fixed protrusions (230) arranged in one-to-one correspondence with the plurality of fixed holes (33).

16. The coil assembly of claim 13, wherein, The waterproof cover (200) is formed by injection molding, and the fixed sheet (34) of the connecting piece (300) is fixedly connected by injection molding.

17. The coil assembly of claim 16, wherein The fixed sheet (34) has a through hole (31), a part of the waterproof cover (200) extends into the through hole (31) and is limitedly matched with the through hole (31) to fix the connecting piece (300); and / or the fixed sheet (34) has a boss (32), the waterproof cover (200) covers the outer periphery of the boss (32) and is limitedly matched with the boss (32) to fix the connecting piece (300). ​ 18. The coil assembly of claim 13, wherein, The connecting piece (35) has a limiting protrusion (351), and the other structure comprises a plate-shaped structure having a limiting hole or a limiting slot; when the connecting piece (35) is fixedly connected with the other structure, a part of the plate-shaped structure is located between the connecting piece (35) and one end surface of the waterproof cover (200) in the axial direction of the stator assembly (100), at least a part of the limiting protrusion (351) is located in the limiting hole or the limiting slot, and is limitedly matched with the inner wall of the limiting hole or the limiting slot, so that the connecting piece (35) is relatively fixed with the plate-shaped structure.

19. An electrically operated valve comprising a valve body and a valve body securing structure, characterised in that, The electric valve comprises the coil component of any one of claims 1 to 18, and the connecting piece (300) and the valve body fixing structure are limitedly matched, so that the coil component and the valve body are connected.

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