Coil assembly of electronic expansion valve, electronic expansion valve and air conditioner

Abstract

The invention discloses a coil assembly of an electronic expansion valve, the electronic expansion valve and an air conditioner, the coil assembly of the electronic expansion valve comprises a pole plate and a framework, and the pole plate comprises a pole seat and a pole claw arranged on the pole seat; the inner wall of the framework is provided with a caulking groove corresponding to the pole claw, the pole seat is connected with the framework, and the pole claw is embedded in the caulking groove. According to the technical scheme, the electromagnetic force of the coil assembly can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic expansion valves, and particularly relates to a coil assembly of an electronic expansion valve, an electronic expansion valve, and an air conditioner. Background Art

[0002] Currently, as a new type of control element, the electronic expansion valve has become an important part of the intelligence of the refrigeration system, and is also an important means and guarantee for the actual realization of the optimization of the refrigeration system. As an important component of the electronic expansion valve, the coil assembly is mainly used to control the refrigerant flow rate to achieve the purpose of controlling the temperature.

[0003] However, the total thickness of the electrode plate and the skeleton of the coil assembly on the current market is relatively large, resulting in a relatively low electromagnetic force of the coil assembly. Summary of the Invention

[0004] The main purpose of the present invention is to provide a coil assembly of an electronic expansion valve, aiming to improve the electromagnetic force of the coil assembly.

[0005] To achieve the above object, the coil assembly of the electronic expansion valve proposed by the present invention includes:

[0006] An electrode plate, the electrode plate includes a pole base and pole claws provided on the pole base; and

[0007] A skeleton, an embedding groove is provided on the inner wall of the skeleton corresponding to the pole claws, the pole base is connected to the skeleton, and the pole claws are embedded in the embedding groove.

[0008] Optionally, the electrode plate includes two first electrode plates and two second electrode plates. The first electrode plate and the second electrode plate respectively include the pole base and the pole claws provided on the pole base. The two first electrode plates are respectively arranged at opposite ends in the axial direction of the skeleton, and the two second electrode plates are arranged between the two first electrode plates.

[0009] Optionally, the skeleton includes two sub-brackets, the two sub-brackets are coaxially stacked, and the two first electrode plates are respectively arranged at one ends of the two sub-brackets away from each other, and the two second electrode plates are respectively arranged at one ends of the two sub-brackets close to each other.

[0010] Optionally, the skeleton and the first electrode plate and the second electrode plate are injection molded with inserts.

[0011] Optionally, one first electrode plate, one second electrode plate and one sub-bracket are injection molded with inserts, and the other first electrode plate, the other second electrode plate and the other sub-bracket are injection molded with inserts.

[0012] Optionally, the first electrode plate is provided with a raw material channel for the injection molding raw material to pass through.

[0013] Optionally, a plurality of the raw material channels are provided, and the plurality of raw material channels are arranged at intervals along the outer peripheral edge of the pole base of the first pole plate.

[0014] Optionally, the material of the skeleton is a thermoplastic material.

[0015] Optionally, the pole base of the second pole plate is provided with a positioning hole, the skeleton is provided with a positioning post corresponding to the positioning hole, and the positioning post is inserted into the positioning hole.

[0016] Optionally, the pole base of the second pole plate is provided with an avoidance circular segment, and the avoidance circular segment is used to avoid the waterproof rib of the skeleton.

[0017] Optionally, the skeleton includes a frame body and a support portion provided on the outer peripheral surface of the frame body. A limiting step is provided between the support portion and the end of the frame body. The pole base is provided on the limiting step. The side surface of the limiting step facing the support portion abuts against the inner peripheral edge of the pole base. The embedding groove is provided on the frame body. The support portion is provided with a through hole corresponding to the embedding groove. The through hole is communicated with the embedding groove. The pole claw passes through the through hole to be embedded in the embedding groove.

[0018] Optionally, the side surface of the pole claw is flush with the notch of the embedding groove.

[0019] The present invention also provides an electronic expansion valve, including the coil assembly of the above-mentioned electronic expansion valve.

[0020] The present invention also provides an air conditioner, including the above-mentioned electronic expansion valve.

[0021] The coil assembly of the above-mentioned electronic expansion valve has at least the following beneficial effects:

[0022] The technical solution of the present invention adopts a pole plate and a skeleton. The pole plate includes a pole base and a pole claw provided on the pole base. The inner wall of the skeleton is provided with an embedding groove corresponding to the pole claw. The pole base is connected to the skeleton, and the pole claw is embedded in the embedding groove. Specifically, an embedding groove is provided on the inner wall of the skeleton, and the pole claw is embedded in the embedding groove, so as to reduce the total thickness of the skeleton and the pole claw, thereby reducing the distance between the coil winding wound on the skeleton and the rotor, and further improving the electromagnetic force of the coil assembly. Secondly, in this solution, embedding the pole claw in the embedding groove can reduce the outer diameter of the coil winding, facilitate the assembly of the coil assembly, and at the same time, when winding the same wire diameter and number of turns, the required winding mass is less, which is beneficial to reducing the winding cost, thereby reducing the production cost of the coil assembly. Description of the Drawings

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0024] Figure 1 It is a cross-sectional structural schematic diagram of an embodiment of the electronic expansion valve of the present invention;

[0025] Figure 2 For Figure 1 The partial enlarged view at position A in

[0026] Figure 3 It is a cross-sectional structural schematic diagram of an embodiment of the coil assembly of the electronic expansion valve of the present invention;

[0027] Figure 4 It is a structural schematic diagram of the sub-bracket of the coil assembly of the electronic expansion valve of the present invention;

[0028] Figure 5 It is a cross-sectional structural schematic diagram of the sub-bracket of the coil assembly of the electronic expansion valve of the present invention;

[0029] Figure 6 It is a structural schematic diagram of the first pole plate of the coil assembly of the electronic expansion valve of the present invention;

[0030] Figure 7 It is a structural schematic diagram of the second pole plate of the coil assembly of the electronic expansion valve of the present invention.

[0031] Explanation of the reference numerals in the drawings:

[0032] Label Name Label Name 100 Plate 210 Sub-bracket 110 First plate 211 Bracket body 111 Raw material channel 2111 Insertion groove 112 First pole seat 212 Support part 113 First pole claw 2121 First support part 120 Second plate 2122 Second support part 121 Positioning hole 213 Limit step 122 Avoidance circular segment 214 Through hole 123 Second pole seat 215 Waterproof rib 124 Second pole claw 300 Valve body 200 Skeleton

[0033] The realization of the object of the present invention, functional features and advantages will be further described in conjunction with the embodiments with reference to the drawings. Detailed Embodiments

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0035] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture (as shown in the attached drawings). If the specific posture changes, the directional indications will also change accordingly.

[0036] In the present invention, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0037] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0038] The present invention provides a coil assembly of an electronic expansion valve.

[0039] Refer to Figures 1 to 3 , in an embodiment of the present invention, the coil assembly of the electronic expansion valve includes a pole plate 100 and a skeleton 200. The pole plate 100 includes a pole base and pole claws provided on the pole base. The inner wall of the skeleton 200 is provided with an embedding groove 2111 corresponding to the pole claws. The pole base is connected to the skeleton 200, and the pole claws are embedded in the embedding groove 2111.

[0040] Specifically, a groove 2111 is provided on the inner wall of the skeleton 200, and the pole claw is embedded in the groove 2111. This can reduce the total thickness of the skeleton 200 and the pole claw, thereby reducing the distance between the coil winding wound around the skeleton 200 and the rotor, and further enhancing the electromagnetic force of the coil assembly. Secondly, in this solution, embedding the pole claw in the groove 2111 can reduce the outer diameter of the coil winding, facilitating the assembly of the coil assembly. At the same time, when winding the same wire diameter and number of turns, less winding mass is required, which is conducive to reducing the winding cost and thus the production cost of the coil assembly. It can be seen that the technical solution of the present invention can enhance the electromagnetic force of the coil assembly while reducing the winding cost.

[0041] Referring to Figure 2 , Figure 3 , Figure 6 and Figure 7 , it should be noted that in this solution, the pole seat of the first pole plate 110 is the first pole seat 112, the pole claw of the first pole plate 110 is the first pole claw 113, the pole seat of the second pole plate 120 is the second pole seat 123, and the pole claw of the second pole plate 120 is the second pole claw 124.

[0042] Optionally, the pole plate 100 includes two first pole plates 110 and two second pole plates 120. The first pole plate 110 and the second pole plate 120 each include a pole seat and a pole claw provided on the pole seat. The two first pole plates 110 are respectively disposed at opposite ends in the axial direction of the skeleton 200, and the two second pole plates 120 are disposed between the two first pole plates 110. Specifically, a groove 2111 is provided on the inner wall of the skeleton 200 corresponding to each pole claw of each first pole plate 110, and a groove 2111 is provided corresponding to each pole claw of each second pole plate 120. A pole claw is correspondingly embedded in a groove 2111, which facilitates increasing the installation stability of the pole claw and thus the installation stability of the pole plate 100. Of course, the present invention is not limited to this. In some other embodiments, the groove 2111 can also be provided as an annular groove, and multiple claw members are integrally embedded in the annular groove.

[0043] Furthermore, the pole base of the first pole plate 110 and the pole claws of the first pole plate 110 are integrally formed by stamping, and the pole base of the second pole plate 120 and the pole claws of the second pole plate 120 are integrally formed by stamping. This is because the parts processed by integral stamping have stable quality and good consistency. The parts processed by stamping have thin walls, light weight, good rigidity, and high surface quality. Using stamping can improve the quality of the first pole plate 110 and the second pole plate 120. Secondly, the material utilization rate of stamping is high, which belongs to less or non-chip processing, can reduce material waste, and the die has a long service life, thus reducing the production cost of the first pole plate 110 and the second pole plate 120. Furthermore, the production efficiency of stamping is high, which can improve the production efficiency of the first pole plate 110 and the second pole plate 120. Of course, the present invention is not limited thereto. In other embodiments, the pole base of the first pole plate 110 can also be welded to the pole claws of the first pole plate 110, and the pole base of the second pole plate 120 can also be welded to the pole claws of the second pole plate 120.

[0044] Further, the framework 200 includes two sub-frameworks 210, the two sub-frameworks 210 are coaxially stacked, and the two first pole plates 110 are respectively arranged at the mutually remote ends of the two sub-frameworks 210, and the two second pole plates 120 are respectively arranged at the mutually close ends of the two sub-frameworks 210. It can be understood that since structures such as waterproof ribs 215 are also provided on the framework, dividing the framework 200 into two coaxially stacked sub-frameworks 210 can reduce the forming process difficulty of the framework 200 and reduce the defective rate. Secondly, dividing the framework 200 into two coaxially stacked sub-frameworks 210 facilitates the operator to install the second pole plate 120 on the sub-framework 210, thereby reducing the installation difficulty of the pole plate 100, being beneficial to improving the installation efficiency, and reducing the production cost. Of course, the present invention is not limited thereto. In other embodiments, the framework 200 can also be integrally provided, directly arranging the two first pole plates 110 at the relatively two ends in the axial direction of the framework 200, and arranging the two second pole plates 120 between the two first pole plates 110.

[0045] It should be noted that the two first pole plates 110 are respectively arranged at the mutually remote ends of the two sub-frameworks 210, and the two second pole plates 120 are respectively arranged at the mutually close ends of the two sub-frameworks 210, that is, the first pole base 112 of one first pole plate 110 and the second pole base 123 of one second pole plate 120 are respectively arranged at the relatively two ends of one sub-framework 210, the first pole base 112 of the other first pole plate 110 and the second pole base 123 of the other second pole plate 112 are respectively arranged at the relatively two ends of the other sub-framework 210, and the first pole claws 113 of the first pole plate 110 extend towards the second pole plate 120 arranged on the same sub-framework 210, and the second pole claws 124 of the second pole plate 120 extend towards the first pole plate 110 arranged on the same sub-framework 210.

[0046] Secondly, any second claw pole 124 is located between two adjacent first claw poles 123, and any first claw pole 123 is located between two adjacent second claw poles 124.

[0047] Optionally, in this embodiment, the skeleton 200 is injection molded with the first pole plate 110 and the second pole plate 120. It should be noted that in this application, insert injection molding means that the formed first pole plate 110 and second pole plate 120 are lapped in the mold, and then the raw material of the skeleton 200 is injected, so that the skeleton 200 is directly formed in the mold. One of the greatest advantages of injection molding is cost saving. For the parts formed by insert injection molding, there is no need for re-manufacturing, and direct insert injection molding processing can be carried out. This not only saves costs, but also greatly improves production efficiency. Secondly, insert injection molding can better ensure the quality of the parts. After injection molding and then processing, the processing accuracy and quality can be better guaranteed, and defective products caused by improper operation during the manufacturing process can be avoided. It can be seen that using the method of insert injection molding to form and connect the skeleton 200 with the first pole plate 110 and the second pole plate 120 can not only improve production efficiency, but also reduce the defective rate of the coil assembly and the cost of the coil assembly. Of course, the present invention is not limited to this. In some other embodiments, the skeleton 200 can also be produced and formed first (such as but not limited to after injection molding), and then the first pole plate 110 and the second pole plate 120 are inserted and installed on the skeleton 200.

[0048] Optionally, one first pole plate 110, one second pole plate 120 and one sub-bracket 210 are injection molded by insert molding, and the other first pole plate 110, the other second pole plate 120 and the other sub-bracket 210 are injection molded by insert molding. It can be understood that after the two first pole plates 110, the second pole plates 120 and the sub-bracket 210 components are injection molded by insert molding respectively, they are coaxially installed. This is convenient for reducing the complexity of the structure of the skeleton 200, thereby reducing the defective rate of the insert injection molding of the pole plate 100 and the skeleton 200, and further reducing the production cost. Of course, the present invention is not limited to this. In some other embodiments, the two first pole plates 110 and the two second pole plates 120 can also be injection molded with the skeleton 200 at the same time.

[0049] Optionally, the first pole plate 110 is provided with a raw material channel 111 for the injection molding raw material to pass through. In this way, without affecting the structural strength of the first pole plate 110, it is convenient for the injection molding raw material to pass through, reducing the complexity of the mold for insert injection molding, and thus reducing the process difficulty. Of course, the present invention is not limited to this. In other embodiments, raw material through holes 214 can also be provided on the mold for insert injection molding.

[0050] Furthermore, in this embodiment, there are multiple raw material channels 111, and the multiple raw material channels 111 are arranged at intervals along the outer peripheral edge of the pole base of the first pole plate 110, so that the raw material amounts of each part of the framework 200 are more uniform, reducing the defective rate of the framework 200. Of course, the present invention is not limited to this. In some other embodiments, there may be only one raw material channel 111.

[0051] Furthermore, the raw material channel 111 is configured with a raw material notch, which can ensure that the electromagnetic force of the coil is not reduced while facilitating the passage of the raw material. Of course, the present invention is not limited to this. In some other embodiments, the raw material channel 111 may also be configured as a raw material through-hole.

[0052] Optionally, the material of the framework 200 is a thermoplastic material; this is because thermoplastic materials have strong plasticity and can be softened by heating and injection molded into various complex shapes and structures. It can be seen that using thermoplastic materials is beneficial to the molding of the framework 200 and facilitates reducing the process difficulty of insert injection molding. Secondly, compared with thermosetting materials, thermoplastic materials have lower processing costs because they can be produced by conventional injection molding or extrusion molding without the need for special heating and pressure control equipment, which makes thermoplastic materials more cost-effective in large-scale production. Moreover, thermoplastic materials have good durability, which can extend the service life of the framework 200. Furthermore, thermoplastic materials are also recyclable, which helps to reduce the negative impacts generated by landfill and incineration. Of course, the present invention is not limited to this. In some other embodiments, the material of the framework 200 may also be a thermosetting material.

[0053] Optionally, the pole base of the second pole plate 120 is provided with a positioning hole 121, and the framework 200 is provided with a positioning post corresponding to the positioning hole 121, and the positioning post passes through the positioning hole 121, which is beneficial to improving the installation stability of the second pole plate 120. Of course, the present invention is not limited to this. In some other embodiments, positioning ribs may also be provided on the pole base of the second pole plate 120, and positioning grooves are provided on the framework 200 corresponding to the positioning ribs, and the positioning ribs are clamped in the positioning grooves.

[0054] Optionally, the pole base of the second pole plate 120 is provided with an avoidance circular notch 122 for avoiding the waterproof rib 215 of the framework 200; the setting of the avoidance circular notch 122 can prevent the waterproof rib 215 from interfering with the pole base of the second pole plate 120. Of course, the present invention is not limited to this. In some other embodiments, the pole base of the second pole plate 120 may also be provided with an avoidance notch corresponding to the waterproof rib 215.

[0055] Refer to Figures 3 to 5, optionally, the framework 200 includes a framework body 211 and a supporting portion 212 provided on the outer peripheral surface of the framework body 211. A limiting step 213 is provided between the supporting portion 212 and the end of the framework body 211. The pole seat is arranged on the limiting step 213. The side surface of the limiting step 213 facing the supporting portion 212 abuts against the inner peripheral edge of the pole seat. An embedding groove 2111 is provided in the framework body 211. The supporting portion 212 is correspondingly provided with a through hole 214 corresponding to the embedding groove 2111. The through hole 214 communicates with the embedding groove 2111. The pole claw passes through the through hole 214 to be embedded in the embedding groove 2111. It can be understood that the setting of the limiting step 213 is beneficial to restricting the position of the pole plate 100 and avoiding relative sliding between the pole plate 100 and the framework 200. Of course, the present invention is not limited thereto. In other embodiments, a limiting convex column extending continuously along the axial direction of the framework body 211 may also be provided at the end of the framework body 211. The side surface of the limiting convex column facing the supporting portion 212 abuts against the pole seat to restrict the position of the pole plate 100.

[0056] It should be noted that each sub-framework 210 of the framework 200 includes a framework body 211 and a supporting portion 212 provided on the outer peripheral surface of the framework body 211.

[0057] Among them, the supporting portion 212 includes a first supporting portion 2121 and a second supporting portion 2122 respectively arranged at opposite ends in the axial direction of the framework body 211. A limiting step 213 is provided between the first supporting portion 2121 and the end of the framework body 211 closest to it. The pole seat of the first pole plate 110 is arranged on the limiting step 213. The side surface of the limiting step 213 facing the first supporting portion 2121 contacts the inner peripheral edge of the pole seat of the first pole plate 110. A limiting step 213 is provided between the second supporting portion 2122 and the end of the framework body 211 closest to it. The pole seat of the second pole plate 120 is arranged on the limiting step 213. The side surface of the limiting step 213 facing the second supporting portion 2122 contacts the inner peripheral edge of the pole seat of the second pole plate 120.

[0058] In this embodiment, the first supporting portion 2121 and the second supporting portion 2122 are in a supporting ring shape, which can increase the supporting strength of the first supporting portion 2121 and the second supporting portion 2122 for the first pole plate 110 and the second pole plate 120.

[0059] In this embodiment, since the sub-framework 210 is injection molded with the first pole plate 110 and the second pole plate 120 by insert molding, the embedding groove 2111 and the through hole 214 are formed during the injection molding process, rather than being formed by later processing. This is beneficial to reducing the processing technology and thus improving the production efficiency of the coil assembly. Of course, in other embodiments, when the framework 200 is a single injection molded part, the embedding groove 2111 and the through hole 214 can be formed during the injection molding process or can be dug later.

[0060] Optionally, the side surface of the pole claw is flush with the notch of the embedding groove 2111, which can increase the contact area between the coil assembly and the valve body 300. Of course, the present invention is not limited thereto. In other embodiments, the side surface of the pole claw may also protrude from the notch of the embedding groove 2111.

[0061] The present invention further provides an electronic expansion valve, which includes the coil assembly of the electronic expansion valve. The specific structure of the coil assembly of the electronic expansion valve refers to the above embodiments. Since this electronic expansion valve adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one.

[0062] The present invention further provides an air conditioner, which includes an electronic expansion valve. The specific structure of the electronic expansion valve refers to the above embodiments. Since this air conditioner adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one.

[0063] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the description and drawings of the present invention under the inventive concept of the present invention, or direct / indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A coil assembly of an electronic expansion valve, characterized in that, Comprising: A plate electrode, the plate electrode including a pole base and pole claws provided on the pole base; And A skeleton, an embedding groove is provided on the inner wall of the skeleton corresponding to the pole claws, the pole base is connected to the skeleton, and the pole claws are embedded in the embedding groove.

2. The coil assembly of the electronic expansion valve according to claim 1, characterized in that, The plate electrode includes two first plate electrodes and two second plate electrodes. The first plate electrode and the second plate electrode respectively include the pole base and the pole claws provided on the pole base. The two first plate electrodes are respectively arranged at opposite ends in the axial direction of the skeleton, and the two second plate electrodes are arranged between the two first plate electrodes.

3. The coil assembly of the electronic expansion valve according to claim 2, characterized in that, The skeleton includes two sub-supports, the two sub-supports are coaxially stacked, and the two first plate electrodes are respectively arranged at one end of the two sub-supports away from each other, and the two second plate electrodes are respectively arranged at one end of the two sub-supports close to each other.

4. The coil assembly of the electronic expansion valve according to claim 3, characterized in that, The skeleton and the first plate electrode and the second plate electrode are injection molded with inserts.

5. The coil assembly of the electronic expansion valve according to claim 4, characterized in that, One first plate electrode, one second plate electrode and one sub-support are injection molded with inserts, and the other first plate electrode, the other second plate electrode and the other sub-support are injection molded with inserts.

6. The coil assembly of the electronic expansion valve according to claim 5, characterized in that, The first plate electrode is provided with a raw material passage for allowing the injection molding raw material to pass through.

7. The coil assembly of the electronic expansion valve according to claim 6, characterized in that, There are a plurality of the raw material passages, and the plurality of raw material passages are arranged at intervals along the outer peripheral edge of the pole base of the first plate electrode.

8. The coil assembly of the electronic expansion valve according to claim 4, characterized in that, The material of the skeleton is a thermoplastic material.

9. The coil assembly of the electronic expansion valve according to claim 2, wherein, The pole base of the second plate electrode is provided with a positioning hole, and the skeleton is provided with a positioning post corresponding to the positioning hole, and the positioning post passes through the positioning hole.

10. The coil assembly of the electronic expansion valve according to claim 2, characterized in that, The pole base of the second plate electrode is provided with an avoidance circular cutout for avoiding the waterproof rib of the skeleton.

11. The coil assembly of the electronic expansion valve according to claim 1, characterized in that, The skeleton includes a frame body and a support portion provided on the outer peripheral surface of the frame body. A limiting step is provided between the support portion and the end of the frame body. The pole base is arranged on the limiting step. The side surface of the limiting step facing the support portion abuts against the inner peripheral edge of the pole base. The embedding groove is arranged on the frame body. The support portion is provided with a through hole corresponding to the embedding groove, and the through hole is communicated with the embedding groove. The pole claw passes through the through hole to be embedded in the embedding groove.

12. The coil assembly of the electronic expansion valve according to claim 1, wherein, The side surface of the pole claw is flush with the notch of the embedding groove.

13. An electronic expansion valve, characterized in that, Including the coil assembly of the electronic expansion valve according to any one of claims 1 to 12.

14. An air conditioner, characterized in that, Including the electronic expansion valve according to claim 13.

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