Electromagnetic coil and electronic valve

Abstract

The present disclosure provides an electromagnetic coil, comprising a stator assembly, a wire connecting part, and a wire assembly. The stator assembly comprises a winding, a contact pin, a stator housing, and an encapsulation structure, the winding is arranged in the stator housing, and at least part of the winding and at least part of the contact pin are wrapped by the encapsulation structure; the wire connecting part is connected to the stator assembly and is suitable for accommodating the contact pin, and a mounting slot is formed in the wire connecting part; and the wire assembly comprises a wire and a sealing rubber sleeve, the wire has a connecting end part, the connecting end part is mounted in the mounting slot and is connected to the stator assembly by means of the contact pin, the sealing rubber sleeve sleeves the periphery of the connecting end part and is in sealing fit with the mounting slot, a through hole for the wire to pass through is formed in the sealing rubber sleeve, and the wire is in sealing fit with the through hole. The present disclosure further provides an electronic valve, which comprises the electromagnetic coil.

Description

Electromagnetic coil and electronic valve

[0001] Cross-reference to related applications

[0002] The present disclosure claims priority to Chinese Patent Application No. 202420726342.0, filed on April 9, 2024, entitled “Electromagnetic coil and electronic valve”, the entire contents of which are incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of electronic valves and components thereof, and in particular to an electromagnetic coil with a sealing structure and an electronic valve with the same. BACKGROUND

[0004] In the existing design scheme of the electromagnetic coil, the stator assembly and the wire are sealed at the electrical connection position by means of glue pouring sealing or plastic sealing. However, the above-mentioned existing scheme has the following technical problems: for the glue pouring process, the production cycle is relatively long, and the production process of the electromagnetic coil is required to be relatively difficult. For the injection molding process, the production process is relatively difficult, and it is easy to produce injection molding defects. In addition, the above-mentioned two existing sealing processes also have the problem of low standardization degree of the electromagnetic coil, and it is difficult to realize the recycling of the wire after the electromagnetic coil fails, resulting in cost waste. SUMMARY

[0005] According to a first aspect of the present disclosure, an electromagnetic coil is provided, comprising a stator assembly, a wire connecting portion, and a wire assembly; the stator assembly comprises a winding, a pin, a stator housing, and an encapsulation structure, the winding is arranged in the stator housing, and the encapsulation structure encapsulates at least a portion of the winding and at least a portion of the pin; the wire connecting portion is connected to the stator assembly and is adapted to accommodate the pin, and the wire connecting portion is provided with a mounting groove; the wire assembly comprises a wire and a sealing rubber sleeve, the wire has a connecting end portion, the connecting end portion is mounted in the mounting groove and connected to the stator assembly via the pin, the sealing rubber sleeve is sleeved on the outer periphery of the connecting end portion and sealingly cooperates with the mounting groove, the sealing rubber sleeve is provided with a through hole for the wire to pass through, and the wire sealingly cooperates with the through hole.

[0006] According to a second aspect of the present disclosure, an electronic valve is provided, comprising the electromagnetic coil of the first aspect. BRIEF DESCRIPTION OF DRAWINGS

[0007] The various objects, features and advantages of the present disclosure will become more apparent to those skilled in the art from the following detailed description, when taken in conjunction with the accompanying drawings. The drawings are merely schematic and are not drawn to scale. In the drawings, like reference numerals refer to like parts throughout the various views. Wherein:

[0008] FIG. 1 is a perspective structural schematic view of an electromagnetic coil according to an exemplary embodiment;

[0009] FIG. 2 is a plan view of the electromagnetic coil shown in FIG. 1;

[0010] FIG. 3 is a sectional view taken along the line A-A in FIG. 2;

[0011] FIG. 4 is an enlarged schematic view of a portion B in FIG. 3;

[0012] FIG. 5 is a perspective structural schematic view of a sealing boot of the electromagnetic coil shown in FIG. 1;

[0013] FIG. 6 is a plan view of the sealing boot shown in FIG. 5;

[0014] FIG. 7 is a sectional view taken along the line C-C in FIG. 6;

[0015] FIG. 8 is a partial sectional view of an electromagnetic coil according to another exemplary embodiment;

[0016] FIG. 9 is a perspective structural schematic view of a sealing boot of the electromagnetic coil according to yet another exemplary embodiment;

[0017] FIG. 10 is a plan view of the sealing boot shown in FIG. 9;

[0018] FIG. 11 is a sectional view taken along the line D-D in FIG. 10;

[0019] FIG. 12 is a perspective structural schematic view of an electromagnetic coil according to still another exemplary embodiment;

[0020] FIG. 13 is a partial sectional view of the electromagnetic coil shown in FIG. 12;

[0021] FIG. 14 is a perspective structural schematic view of a sealing boot of the electromagnetic coil shown in FIG. 13;

[0022] FIG. 15 is a plan view of the sealing boot shown in FIG. 14;

[0023] FIG. 16 is a sectional view taken along the line E-E in FIG. 15.

[0024] The reference signs are explained as follows: 100. housing; 210. winding; 220. encapsulation structure; 230. wire connecting part; 231. mounting groove; 2311. first sealing protrusion; 232. accommodating groove; 233. clamping boss; 240. pin; 250. stator housing; 310. wire; 311. connecting end; 312. connecting structure; 320. sealing rubber sleeve; 321. second sealing protrusion; 322. rubber sleeve body; 323. clamping wall; 3231. clamping hole; 324. clamping groove; 325. through hole; G. gap. DETAILED DESCRIPTION

[0025] Typical embodiments embodying features and advantages of the present disclosure will be described in detail in the following description. It should be understood that the present disclosure can have various changes on different embodiments, which are all not deviated from the scope of the present disclosure, and the description and drawings in the present disclosure are essentially for illustration, not to limit the present disclosure.

[0026] In the following description of different exemplary embodiments of the present disclosure, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary structures, systems, and steps that can be implemented to practice the present disclosure. It is to be understood that other specific arrangements of parts, structures, exemplary devices, systems, and steps can be utilized and structural and functional modifications can be made without departing from the scope of the present disclosure. Also, while the terms "over," "between," "among," and the like can be used in the description of different exemplary features and elements of the present disclosure, these terms are used in the context of the specific example described and are not intended to limit the scope of the present disclosure. Nothing in this specification should be interpreted as requiring a specific three-dimensional orientation of structural features as falling within the scope of the present disclosure.

[0027] Referring to FIG. 1, a schematic diagram of a three-dimensional structure of an electromagnetic coil according to the present disclosure is shown. In this exemplary embodiment, the electromagnetic coil according to the present disclosure is described by way of example in the context of a refrigeration system. It will be readily understood by those skilled in the art that various modifications, additions, substitutions, deletions, or other changes can be made to the following detailed description of the present disclosure in order to apply the relevant design of the present disclosure to electromagnetic coils in other types of applications, and such changes are still within the scope of the electromagnetic coil according to the present disclosure.

[0028] As shown in Fig. 1, in an embodiment of the present disclosure, the electromagnetic coil comprises a stator assembly, a wire connecting portion 230 and a wire assembly. For reference, Fig. 2 shows a top view of the electromagnetic coil, Fig. 3 shows a cross-sectional view along the straight line A-A in Fig. 2, Fig. 4 shows an enlarged view of part B in Fig. 3, Fig. 5 shows a perspective view of a sealing sleeve 320, Fig. 6 shows a top view of the sealing sleeve 320, and Fig. 7 shows a cross-sectional view along the straight line C-C in Fig. 6. The structure, connection mode and functional relationship of each main component of the electromagnetic coil will be described in detail below with reference to the above figures.

[0029] As shown in FIGS. 1-4, in an embodiment of the present disclosure, the stator assembly includes a winding 210, a pin 240, a stator housing 250, and an encapsulation structure 220. The winding 210 is disposed in the stator housing 250. The encapsulation structure 220 covers at least part of the winding 210 and at least part of the pin 240. A wire connecting portion 230 is connected to the stator assembly and is adapted to accommodate the pin 240, and the wire connecting portion 230 is provided with a mounting groove 231. The wire assembly includes a wire 310 and a sealing sleeve 320. The wire 310 has a connecting end portion 311 mounted in the mounting groove 231, and the connecting end portion 311 is connected to the stator assembly via the pin 240. The sealing sleeve 320 is sleeved on the outer periphery of the connecting end portion 311, sealingly engages with the mounting groove 231, and is provided with a through hole 325 through which the wire 310 passes and sealingly engages with the through hole 325. Through the above structural design, the present disclosure can realize the sealing between the wire 310 and the wire connecting portion 230 by using the sealing sleeve 320, i.e., a soft sealing structure is formed by using the sealing sleeve 320, thereby replacing the existing sealing solutions such as glue filling sealing or injection sealing. Accordingly, compared with glue filling sealing, the present disclosure can shorten the production cycle and reduce the production process difficulty of the electromagnetic coil, and compared with injection sealing, the present disclosure can reduce the production process difficulty and avoid injection defects. Furthermore, compared with the above existing sealing solutions, the present disclosure can also improve the standardization degree of the electromagnetic coil, which is conducive to the recycling of the wire 310 after the electromagnetic coil defect occurs and saves material cost. In addition, the present disclosure directly connects the sealing sleeve 320 connected to the wire 310 with the wire connecting portion 230, which is different from the existing solution of connecting the sealing sleeve with the connector via the sealing sleeve, sealing the wire and the connector via the sealing sleeve, connecting another sealing sleeve to the connector and connecting the connector with the coil connecting portion via the sealing sleeve, and sealing the connector and the coil connecting portion via the sealing sleeve. The present disclosure can only use one component, i.e., the sealing sleeve 320, to realize the sealing and insulation of the wire connecting portion 230 and the wire 310 at two positions, which is conducive to reducing the number of components, simplifying the structural complexity, and reducing the assembly difficulty.

[0030] In an embodiment of the present disclosure, the sealing sleeve 320 and the mounting groove 231 can be in interference fit, i.e., the outer periphery size of at least part of the sealing sleeve 320 can be greater than the inner periphery size of the relative position of the mounting groove 231. Accordingly, the outer periphery size of the sealing sleeve 320 before being mounted with the wire 310 and the relative position of the mounting groove 231 are in interference fit, and the sealing sleeve 320 is pressed during the mounting process to realize the close fit sealing between the sealing sleeve 320 and the groove wall of the mounting groove 231. Through the above structural design, the present disclosure can avoid the disengagement of the sealing sleeve 320 and the mounting groove 231 of the wire connecting portion 230, improve the structural stability, and ensure the sealing and insulation function.

[0031] As shown in FIG. 4, in an embodiment of the present disclosure, the mating surface (e.g. the groove wall of the mounting groove 231 and the outer circumferential surface of the seal sleeve 320) between the wire connecting portion 230 and the seal sleeve 320 can be a planar mating structure. On this basis, the sealing and insulation function can be achieved through the interference fit between the seal sleeve 320 and the wire connecting portion 230. In some embodiments, a protruding or recessed structure can also be provided on at least one of the outer circumferential surface of the seal sleeve 320 or the groove wall of the mounting groove 231, whereby the sealing and insulation function can also be achieved. For specific examples, reference can be made to the following exemplary embodiments, which will not be described here in detail.

[0032] As shown in FIG. 4, in an embodiment of the present disclosure, the wire connecting portion 230 can be provided with a connecting hole, one end of the connecting hole being in communication with the inner cavity of the stator housing 250 (i.e. the space of the stator housing 250 for accommodating the winding 210), and the other end of the connecting hole being in communication with the mounting groove 231, the connecting hole being adapted for the pin 240 to pass through.

[0033] As shown in FIG. 4, based on the structure design of the wire connecting portion 230 provided with the connecting hole, in an embodiment of the present disclosure, the wire connecting portion 230 can also be provided with an accommodation groove 232, the accommodation groove 232 being arranged at the groove bottom of the mounting groove 231, the other end of the connecting hole being connected to the accommodation groove 232, whereby the connecting hole is connected to the mounting groove 231 via the accommodation groove 232. On this basis, the connecting end portion 311 of the wire 310 and the pin 240 can be connected via a connecting structure 312, the connecting structure 312 being at least partially accommodated in the accommodation groove 232.

[0034] In an embodiment of the present disclosure, the wire connecting portion 230 and the encapsulation structure 220 can be integrally formed. In some embodiments, the wire connecting portion 230 and the encapsulation structure 220 can also be separately formed structures, and the two are fixedly connected.

[0035] As shown in FIG. 4, in an embodiment of the present disclosure, the mounting groove 231 has a first side corresponding to the connection between the wire 310 and the pin 240. For example, in the present embodiment, the first side of the mounting groove 231 is the groove bottom on which the receiving groove 232 is arranged. On this basis, a gap G can be formed between the sealing sleeve 320 and the groove bottom of the mounting groove 231. Through the above structural design, the present disclosure can leave a gap G between the sealing sleeve 320 and the mounting groove 231, which can be used for placing the wire 310, and can also accommodate the size expansion of the sealing sleeve 320 due to the deformation caused by temperature changes, prevent damage caused by the lack of expansion space when the sealing sleeve 320 deforms due to temperature changes, and prolong the service life of the sealing sleeve 320. In some embodiments, when the connection between the wire 310 and the pin 240 is located at other positions of the mounting groove 231, such as the first side of the mounting groove 231 being the groove wall, a gap G can also be left between the sealing sleeve 320 and the first side of the mounting groove 231. Furthermore, the sealing sleeve 320 can also fill the mounting groove 231, which is not limited to the above embodiment.

[0036] As shown in FIGS. 5 and 7, in an embodiment of the present disclosure, the outer circumferential dimension of at least part of the sealing sleeve 320 is greater than the inner circumferential dimension of the mounting groove 231. Through the above structural design, the present disclosure can make the sealing sleeve 320 and the groove wall of the mounting groove 231 more closely extruded with each other during the process of inserting the connection end portion 311 with the sealing sleeve 320 into the mounting groove 231, which further improves the sealing and insulation effect.

[0037] As shown in FIGS. 5 and 7, in an embodiment of the present disclosure, the outer circumferential dimension of one end of the sealing sleeve 320 away from the pin 240 can be greater than the outer circumferential dimension of one end close to the pin 240. Accordingly, the outer circumferential dimension of one end of the sealing sleeve 320 away from the pin 240 is greater than the inner circumferential dimension of the mounting groove 231. In some embodiments, on the basis of ensuring the sealing cooperation between the sealing sleeve 320 and the mounting groove 231, the sealing sleeve 320 can also adopt any possible structural form, such as the outer circumferential dimension of one end of the sealing sleeve 320 away from the pin 240 being equal to or less than the outer circumferential dimension of one end close to the pin 240, which is not limited to the present embodiment.

[0038] As shown in FIG. 7, based on the structural design that the outer circumferential dimension of one end of the sealing sleeve 320 away from the pin 240 is greater than the outer circumferential dimension of one end close to the pin 240, in an embodiment of the present disclosure, the cross section of the sealing sleeve 320 can be trapezoidal, that is, the side of the cross section pattern of the sealing sleeve 320 can be linear. In some embodiments, the side of the cross section pattern of the sealing sleeve 320 can also have other shapes, such as but not limited to arc, which is not limited to the present embodiment.

[0039] As shown in FIGS. 5-7, in an embodiment of the present disclosure, the lead wire 310 and the sealing sleeve 320 can be tightly fitted, for example, the size relationship between the lead wire 310 and the through hole 325 can be an interference fit before the lead wire 310 and the sealing sleeve 320 are installed, and the lead wire 310 and the sealing sleeve 320 are tightly fitted and sealed by extrusion during the installation process.

[0040] In an embodiment of the present disclosure, the assembly of the sealing sleeve 320 and the lead wire 310 can be that the sealing sleeve 320 is installed on the lead wire 310 during the production of the lead wire 310. In some embodiments, the sealing sleeve 320 and the lead wire 310 can also be assembled in other ways, for example, the sealing sleeve 320 can be injection molded on the lead wire 310, and the present embodiment is not limited thereto.

[0041] In an embodiment of the present disclosure, the connection between the pin 240 and the lead wire 310 can be a plug-in connection. Through the above structural design, the plug-in connection has the advantages of simple process and easy operation. In some embodiments, the pin 240 and the lead wire 310 can also be connected in other ways, such as direct connection, connection via a circuit board, etc., and the present embodiment is not limited thereto.

[0042] In an embodiment of the present disclosure, the lead wire 310 can be a cable (i.e., a connection body with a sealing structure formed by combining multiple wire bundles). In some embodiments, the lead wire 310 can also be other cable structures, such as including only a single wire bundle, and the present embodiment is not limited thereto.

[0043] As shown in FIGS. 1-3, in an embodiment of the present disclosure, the electromagnetic coil proposed by the present disclosure can also include a housing 100 wrapped outside the stator assembly for achieving waterproof, dustproof and insulation functions.

[0044] Referring to FIG. 8, FIG. 8 represents a partial cross-sectional view of an electromagnetic coil capable of embodying the principles of the present disclosure in another exemplary embodiment, which can be particularly referred to the enlarged area of FIG. 4 with respect to FIG. 3 and the cross-sectional position of FIG. 3 with respect to FIG. 2.

[0045] As shown in FIG. 8, in an embodiment of the present disclosure, the groove wall of the mounting groove 231 can be provided with a first sealing protrusion 2311, and the mounting groove 231 is adapted to press the sealing sleeve 320 via the first sealing protrusion 2311 to make the sealing sleeve 320 partially recessed under pressure, so that the area of the mounting groove 231 provided with the first sealing protrusion 2311 is in interference fit with the sealing sleeve 320. Through the above structural design, the present disclosure can further improve the sealing and insulation effect of the mounting groove 231 and the sealing sleeve 320 by using the first sealing protrusion 2311.

[0046] As shown in FIG. 8, the groove wall of the mounting groove 231 is provided with the structure design of the first sealing protrusion 2311. In an embodiment of the present disclosure, the first sealing protrusion 2311 can be in a closed ring type structure, i.e., the first sealing protrusion 2311 is arranged along the groove wall of the mounting groove 231 for one round. Through the above structure design, the present disclosure can further improve the sealing and insulation effect of the first sealing protrusion 2311. In some embodiments, the groove wall of the mounting groove 231 can also set the first sealing protrusion 2311 as multiple segments in discontinuity, and the multiple segments of the first sealing protrusion 2311 are arranged in a circumferential path along the groove wall of the mounting groove 231. In addition, the first sealing protrusion 2311 can also be in a spiral type, such as extending along a threaded path, which is not limited to the present embodiment.

[0047] As shown in FIG. 8, the groove wall of the mounting groove 231 is provided with the structure design of the first sealing protrusion 2311. In an embodiment of the present disclosure, the groove wall of the mounting groove 231 can be provided with at least two first sealing protrusions 2311, such as but not limited to three shown in FIG. 8. Among them, the at least two first sealing protrusions 2311 are arranged in intervals in the axial direction of the wire 310 (such as the up and down direction on the paper shown in FIG. 8). Through the above structure design, the present disclosure can further improve the sealing and insulation effect of the first sealing protrusion 2311. In some embodiments, the groove wall of the mounting groove 231 can also be provided with only one first sealing protrusion 2311, which is not limited to the present embodiment. Referring to FIGS. 9-11, FIG. 9 represents a perspective structural schematic view of the sealing sleeve 320 of the electromagnetic coil capable of embodying the principle of the present disclosure in another exemplary embodiment; FIG. 10 represents a top view of the sealing sleeve 320 shown in FIG. 9; and FIG. 11 represents a cross-sectional view taken along the straight line D-D in FIG. 10.

[0048] As shown in FIGS. 9-11, in an embodiment of the present disclosure, the outer periphery of the sealing sleeve 320 can be provided with a second sealing protrusion 321, and the outer periphery size of the sealing sleeve 320 at the second sealing protrusion 321 can be greater than the inner periphery size of the mounting groove 231, so that the sealing sleeve 320 is in interference fit with the mounting groove 231. Through the above structure design, the present disclosure can further improve the sealing and insulation effect of the mounting groove 231 and the sealing sleeve 320 by using the second sealing protrusion 321.

[0049] As shown in FIG. 9, the structure design of arranging the second sealing protrusion 321 on the outer periphery of the sealing sleeve 320, in an embodiment of the present disclosure, the second sealing protrusion 321 can be in a closed ring type structure, i.e. the second sealing protrusion 321 is arranged along the outer periphery of the sealing sleeve 320 for one round. Through the above structure design, the present disclosure can further improve the sealing and insulation effect of the second sealing protrusion 321. In some embodiments, the outer periphery of the sealing sleeve 320 can also set the second sealing protrusion 321 as multiple segments in discontinuous, and the multiple segments of the second sealing protrusion 321 are arranged along a circumferential path around the outer periphery of the sealing sleeve 320, and further, the second sealing protrusion 321 can also be in a spiral type, such as extending along a threaded path, which is not limited to the present embodiment.

[0050] As shown in FIG. 9 and FIG. 11, the structure design of arranging the second sealing protrusion 321 on the outer periphery of the sealing sleeve 320, in an embodiment of the present disclosure, the outer periphery of the sealing sleeve 320 can be provided with at least two second sealing protrusions 321, for example but not limited to four as shown in FIG. 9. Among them, the at least two second sealing protrusions 321 are arranged in an interval in the axial direction of the wire 310 (for example, the up and down direction on the paper surface as shown in FIG. 11). Through the above structure design, the present disclosure can further improve the sealing and insulation effect of the second sealing protrusion 321. In some embodiments, the outer periphery of the sealing sleeve 320 can also be provided with only one second sealing protrusion 321, which is not limited to the present embodiment.

[0051] Referring to FIG. 12 to FIG. 16, FIG. 12 represents a perspective structural schematic view of an electromagnetic coil capable of embodying the principles of the present disclosure in another exemplary embodiment; FIG. 13 represents a partial cross-sectional view of FIG. 12, which can be specifically referred to the enlarged area of FIG. 3 with respect to FIG. 4 and the cross-sectional position of FIG. 2 with respect to FIG. 3; FIG. 14 represents a perspective structural schematic view of the sealing sleeve 320; FIG. 15 represents a top view of the sealing sleeve 320 shown in FIG. 14; and FIG. 16 represents a cross-sectional view taken along the straight line E-E in FIG. 15.

[0052] As shown in FIGS. 12-16, in an embodiment of the present disclosure, the sealing sleeve 320 can include a sleeve body 322 in one-piece structure and a clamping wall 323. Specifically, the sealing sleeve 320 is adapted to be sleeved on the outer periphery of the connecting end 311 via the sleeve body 322. The clamping wall 323 is spacedly arranged on the outer periphery of the sleeve body 322 to form a clamping groove 324 between the sleeve body 322 and the clamping wall 323. The clamping wall 323 is provided with a clamping hole 3231 penetrating through the clamping wall 323 along the radial direction of the wire 310 (e.g. the left-right direction on the paper shown in FIGS. 13 and 16). Correspondingly, the wire connecting portion 230 is inserted into the clamping groove 324 with the portion adjacent to the slot of the mounting groove 231, and the outer wall of the wire connecting portion 230 can be provided with a clamping boss 233 clamped with the clamping hole 3231, so as to realize the elastic assembly of the wire connecting portion 230 and the sealing sleeve 320. Through the above structural design, the present disclosure can realize the sealing cooperation of the clamping groove 324 and the wire connecting portion 230 by the design that the wire connecting portion 230 is partially inserted into the clamping groove 324, so as to further extend the sealing relationship between the sealing sleeve 320 and the inside of the wire connecting portion 230 (i.e. the sleeve body 322 and the mounting groove 231) to the outside of the wire connecting portion 230, thereby further improving the sealing and insulation effect of the sealing sleeve 320 and the wire connecting portion 230.

[0053] As shown in FIGS. 14 and 15, based on the structural design that the sealing sleeve 320 includes the sleeve body 322 and the clamping wall 323, in an embodiment of the present disclosure, the clamping wall 323 can be arranged in a closed ring structure around the outer periphery of the sleeve body 322, in other words, the clamping groove 324 formed between the sleeve body 322 and the clamping wall 323 is also in the structure of a ring groove. Through the above structural design, the present disclosure can further improve the sealing and insulation effect of the sealing sleeve 320 on the outside of the wire connecting portion 230 via the clamping groove 324. In some embodiments, the clamping wall 323 can also be provided as multiple segments in discontinuous, and the multiple segments of the clamping wall 323 are spacedly arranged along a circumferential path around the sleeve body 322, which is not limited to the present embodiment.

[0054] It should be noted that the electromagnetic coils shown in the drawings and described in the specification are merely a few examples of the many electromagnetic coils that can employ the principles of the present disclosure. It should be clearly understood that the principles of the present disclosure are by no means limited to any details or any components of the electromagnetic coils shown in the drawings or described in the specification.

[0055] Based on the above detailed description of the several exemplary embodiments of the electromagnetic coil proposed in the present disclosure, the following will describe an exemplary embodiment of the electronic valve proposed in the present disclosure.

[0056] In an embodiment of the present disclosure, the electronic valve proposed by the present disclosure comprises the electromagnetic coil proposed by the present disclosure and described in detail in the above embodiment.

[0057] In an embodiment of the present disclosure, the electronic valve proposed by the present disclosure can be an electronic expansion valve. In some embodiments, the electronic valve proposed by the present disclosure can also be other electronic valves with electromagnetic coils, and is not limited to the present embodiment.

[0058] It should be noted here that the electronic valves shown in the drawings and described in the present specification are only a few examples of many electronic valves that can employ the principles of the present disclosure. It should be clearly understood that the principles of the present disclosure are by no means limited to any details or any components of the electronic valves shown in the drawings or described in the present specification.

[0059] In summary, the electromagnetic coil provided by the present disclosure comprises a stator assembly, a wire connecting portion 230, and a wire assembly; the stator assembly comprises a winding 210, a pin 240, a stator housing 250, and an encapsulation structure 220, the winding 210 is arranged in the stator housing 250, and the encapsulation structure 220 encapsulates at least part of the winding 210 and at least part of the pin 240; the wire connecting portion 230 is connected to the stator assembly and is adapted to accommodate the pin 240, and the wire connecting portion 230 is provided with a mounting groove 231; the wire assembly comprises a wire 310 and a sealing rubber sleeve 320, the wire 310 has a connecting end portion 311, the connecting end portion 311 is mounted in the mounting groove 231 and is connected to the stator assembly via the pin 240, and the sealing rubber sleeve 320 is sleeved on the outer periphery of the connecting end portion 311 and is sealingly matched with the mounting groove 231. Through the above structure design, the present disclosure can realize the sealing between the wire 310 and the wire connecting portion 230 by using the sealing rubber sleeve 320, that is, a soft sealing structure is formed by using the sealing rubber sleeve 320, which replaces the existing sealing scheme such as glue filling sealing or injection sealing. Accordingly, compared with glue filling sealing, the present disclosure can shorten the production cycle and reduce the production process difficulty of the electromagnetic coil, and compared with injection sealing, the present disclosure can reduce the production process difficulty and avoid injection defects. Furthermore, compared with the above-mentioned existing sealing scheme, the present disclosure can also improve the standardization degree of the electromagnetic coil, which is beneficial to realize the recycling of the wire 310 after the electromagnetic coil defect occurs and save material cost. In addition, the present disclosure directly seals and connects the sealing rubber sleeve 320 connected to the wire 310 with the wire connecting portion 230, compared with the existing scheme which adopts “wire connection sealing sleeve and is connected with the connector via the sealing sleeve, the wire and the connector are sealed via the sealing sleeve, then another sealing sleeve is connected on the connector and is connected with the coil connecting portion via the sealing sleeve, and the connector and the coil connecting portion are sealed via the sealing sleeve”, the present disclosure can only use one component of the sealing rubber sleeve 320, that is, realize the sealing and insulation of the wire connecting portion 230 and the wire 310 at two places, which is beneficial to reduce the number of parts, simplify the structure complexity, and reduce the assembly difficulty.

[0060] The exemplary embodiments of the electromagnetic coil and electronic valve proposed in the present disclosure are described and / or illustrated in detail above. However, the embodiments of the present disclosure are not limited to the specific embodiments described herein. On the contrary, the components and / or steps of each embodiment can be used independently and separately from the other components and / or steps described herein. Each component and / or each step of an embodiment can also be used in combination with other components and / or steps of other embodiments. When introducing the elements / components / etc. described and / or illustrated herein, the terms "one", "an" and "above" are used to indicate the presence of one or more elements / components / etc. The terms "comprising", "including" and "having" are used to express an open-ended inclusive meaning and mean that in addition to the listed elements / components / etc., there may be additional elements / components / etc. In addition, the terms "first" and "second" in the claims and the specification are used only as labels and are not numerical limitations on their objects.

[0061] While the solenoid coil and electronic valve provided by the present disclosure have been described in terms of various specific embodiments, those skilled in the art will recognize that the disclosure can be practiced with modification within the spirit and scope of the claims.

Claims

1. An electromagnetic coil, wherein: include: A stator assembly, comprising a winding, a pin, a stator housing, and an encapsulation structure, wherein the winding is disposed in the stator housing, and the encapsulation structure covers at least a portion of the winding and at least a portion of the pin; a wire connecting portion connected to the stator assembly and adapted to accommodate the pin, the wire connecting portion being provided with a mounting slot; as well as The wire assembly includes a wire and a sealing rubber sleeve. The wire has a connecting end, which is installed in the installation groove and connected to the stator assembly via the pin. The sealing rubber sleeve is sleeved on the outer periphery of the connecting end and is sealed with the installation groove. The sealing rubber sleeve is provided with a through hole for the wire to pass through, and the wire is sealed with the through hole.

2. The electromagnetic coil according to claim 1, wherein The wire connecting portion is provided with a connecting hole, which is suitable for the insertion of the pin, and one end of the connecting hole is connected to the inner cavity of the stator housing; the wire connecting portion is provided with a receiving groove, which is provided at the bottom of the mounting groove, and the connecting hole is connected to the bottom of the receiving groove; The other end of the connecting hole is connected to the receiving groove, and the connecting hole is connected to the mounting groove via the receiving groove; wherein, the connecting end is connected to the pin via a connecting structure, and the connecting structure is at least partially accommodated in the receiving groove.

3. The electromagnetic coil according to claim 1, wherein: The mounting groove has a first side corresponding to the connection between the wire and the pin, and there is a gap between the sealing rubber sleeve and the first side of the mounting groove; or The sealing rubber sleeve fills the installation groove.

4. The electromagnetic coil according to claim 1, wherein The outer circumference of at least part of the sealing rubber sleeve is larger than the inner circumference of the installation groove.

5. The electromagnetic coil according to claim 4, wherein The outer circumference of the end of the sealing rubber sleeve away from the insertion pin is greater than or equal to the outer circumference of the end close to the insertion pin.

6. The electromagnetic coil according to claim 1, wherein The groove wall of the installation groove is provided with a first sealing protrusion, and the installation groove is suitable for pressing the sealing rubber sleeve through the first sealing protrusion to make the sealing rubber sleeve partially concave under pressure, so that the area of ​​the installation groove where the first sealing protrusion is provided has an interference fit with the sealing rubber sleeve.

7. The electromagnetic coil according to claim 6, wherein: The first sealing protrusion is a closed ring structure; and / or The groove wall of the installation groove is provided with a first sealing protrusion; and / or The groove wall of the installation groove is provided with at least two first sealing protrusions, and the at least two first sealing protrusions are spaced apart in the axial direction of the wire.

8. The electromagnetic coil according to claim 1, wherein A second sealing protrusion is provided on the outer periphery of the sealing rubber sleeve. The outer periphery of the sealing rubber sleeve at the second sealing protrusion is larger than the inner periphery of the mounting groove, so that the sealing rubber sleeve and the mounting groove have an interference fit.

9. The electromagnetic coil according to claim 8, wherein: The second sealing protrusion is a closed ring structure; and / or The outer periphery of the sealing rubber sleeve is provided with a second sealing protrusion; and / or At least two second sealing protrusions are provided on the outer periphery of the sealing rubber sleeve, and the at least two second sealing protrusions are spaced apart in the axial direction of the wire.

10. The electromagnetic coil according to claim 1, wherein The sealing rubber sleeve includes a rubber sleeve body and a clamping wall of an integral structure. The sealing rubber sleeve is suitable for being sleeved on the outer periphery of the connecting end through the rubber sleeve body. The clamping walls are located at intervals on the outer periphery of the rubber sleeve body so that a clamping groove is formed between the rubber sleeve body and the clamping wall. The clamping wall is provided with a clamping hole, and the clamping hole passes through the radial direction of the wire; the part of the wire connecting part adjacent to the notch of the installation groove is inserted into the clamping groove, and the outer wall of the wire connecting part is provided with a clamping boss, and the clamping boss is clamped and matched with the clamping hole.

11. The electromagnetic coil according to claim 10, wherein The clamping wall is arranged around the outer circumference of the rubber sleeve body to form a closed ring structure.

12. An electronic valve, wherein: The electromagnetic coil comprises the electromagnetic coil according to any one of claims 1 to 11.

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