Stator assembly and motorized valve

Abstract

The application provides a stator assembly and an electric valve, comprising an encapsulation part, a coil former and a claw pole shell, the encapsulation part is injection molded with the coil former and the claw pole shell, the coil former comprises a bobbin and a first protruding part, the first protruding part is arranged inwardly protruding from an inner circumferential wall of the bobbin, the claw pole shell comprises a first claw pole, the first claw pole comprises a first side wall and a second side wall, the first side wall is located at one side of the first claw pole along a circumferential direction of the bobbin, the second side wall is located at the other side of the first claw pole along the circumferential direction of the bobbin, the first protruding part is in abutment with the first side wall, and the encapsulation part is in engagement with the second side wall, so that the first protruding part and the encapsulation part play a circumferential limiting role on the first claw pole, which is conducive to improving the assembly precision of the stator assembly, and the second side wall can play a guiding role on the resin in a molten state when the encapsulation part is injection molded, thereby being conducive to improving the injection molding efficiency when the stator assembly is manufactured.

Description

Technical Field

[0001] This application relates to fluid control technology, specifically to a stator assembly and an electric valve. Background Technology

[0002] The stator assembly is a crucial component of the electric valve, comprising a coil bobbin and a claw pole housing. The claw pole housing includes claw poles, and the coil bobbin includes a winding tube. The claw poles are positioned on the inner circumferential wall of the winding tube. However, the inner circumferential wall of the winding tube is smooth, resulting in a lack of positioning between the claw poles and the winding tube. Consequently, the assembly precision between the coil bobbin and the claw pole housing in the stator assembly is relatively low. Utility Model Content

[0003] The purpose of this application is to provide an electric valve that is beneficial to improving the assembly accuracy of the stator assembly and the electric valve, and also beneficial to improving the injection molding efficiency when manufacturing the stator assembly.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] This application provides a stator assembly including an encapsulation portion, a coil frame, and a claw pole housing. The encapsulation portion is injection molded using the coil frame and the claw pole housing as inserts. The coil frame includes a winding tube and a first protrusion. The first protrusion protrudes inward from the inner circumferential wall of the winding tube. The claw pole housing includes a first claw pole. The first claw pole includes a first sidewall and a second sidewall. The first sidewall is located on one side of the first claw pole along the circumferential direction of the winding tube, and the second sidewall is located on the other side of the first claw pole along the circumferential direction of the winding tube. The first protrusion abuts against the first sidewall, and the encapsulation portion engages with the second sidewall.

[0006] In a stator assembly provided in this application, a first sidewall and a second sidewall are located on both sides of the first claw pole along the circumferential direction of the winding tube. The first protrusion abuts against the first sidewall, and the encapsulation portion engages with the second sidewall, so that the first protrusion and the encapsulation portion play a circumferential limiting role for the first claw pole, which is beneficial to improving the assembly accuracy of the stator assembly. Furthermore, when the encapsulation portion is formed by injection molding, the second sidewall can guide the molten resin, which is also beneficial to improving the injection molding efficiency when manufacturing the stator assembly.

[0007] This application provides an electric valve, including a valve assembly and a stator assembly. The valve assembly includes a magnetic rotor assembly, and the stator assembly includes a coil assembly and an encapsulation portion. The coil assembly is disposed around the magnetic rotor assembly, and the encapsulation portion is injection molded with the coil assembly as an insert. The coil assembly includes a coil frame and a claw pole housing. The coil frame includes a winding tube and a first protrusion. The first protrusion protrudes inward from the inner peripheral wall of the winding tube. The claw pole housing includes a first claw pole. The first claw pole includes a first sidewall and a second sidewall. The first sidewall is located on one side of the first claw pole along the circumferential direction of the winding tube, and the second sidewall is located on the other side of the first claw pole along the circumferential direction of the winding tube. The first protrusion abuts against the first sidewall, and the encapsulation portion engages with the second sidewall.

[0008] In the electric valve provided in this application, the first sidewall and the second sidewall are located on both sides of the first claw pole along the circumferential direction of the winding tube. The first protrusion abuts against the first sidewall, and the encapsulation portion engages with the second sidewall, so that the first protrusion and the encapsulation portion play a circumferential limiting role on the first claw pole, which is beneficial to improving the assembly accuracy of the stator assembly. Furthermore, when the encapsulation portion is formed by injection molding, the second sidewall can guide the molten resin, which is also beneficial to improving the injection molding efficiency when manufacturing the stator assembly. Attached Figure Description

[0009] Figure 1 A cross-sectional structural schematic diagram of the stator assembly provided in an embodiment of this application;

[0010] Figure 2 for Figure 1 A schematic diagram of the stator assembly shown from one viewpoint;

[0011] Figure 3 for Figure 2 A cross-sectional structural schematic diagram of the stator assembly shown;

[0012] Figure 4 for Figure 3 A partial structural diagram of the valve cavity in its deployed state is shown.

[0013] Figure 5 for Figure 3 A schematic diagram of the structure of the two coil assemblies shown from one perspective;

[0014] Figure 6 for Figure 4 A schematic diagram of the coil frame from one perspective.

[0015] In the diagram: 10-Electric valve, 100-Stator assembly, 200-Valve assembly, 110-Coil assembly, 120-Encapsulation part, 111-Coil bobbin, 112-Claw pole housing, 113-Claw pole plate, 114-Winding, 115-Winding pin, 116-Valve cavity, 1111-Winding tube, 1112-First end cap, 1113-Second end cap, 1114-First protrusion, 1115-Second protrusion, 1114a-Third sidewall, 1114b-Fourth sidewall, 1121-First claw pole, 1122-Second claw pole, 1123-Third claw pole, 1124- First end plate, 1125-outer sleeve, 1121a-first side wall, 1121b-second side wall, 1122a-fifth side wall, 1122b-sixth side wall, 1123a-seventh side wall, 1123b-eighth side wall, 1124a-notch, 1131-fourth claw pole, 1132-second end plate, 1131a-ninth side wall, 1131b-tenth side wall, 210-magnetic rotor assembly, 220-valve core assembly, 230-valve port, a-the length direction of the dashed line indicates the length direction of the first protrusion, b-the length direction of the dashed line indicates the direction of the winding tube busbar. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this application clearer, specific embodiments are described in further detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the technical solutions of this application and are not intended to limit this application.

[0017] The following is combined with Figures 1 to 6 This document details one embodiment of a stator assembly 100, which includes a coil assembly 110 and an encapsulation portion 120. The coil assembly 110 includes a coil frame 111, a claw pole plate 113, a claw pole housing 112, a winding 114, and a winding pin 115.

[0018] As shown in Figure 3 and Figure 4In this embodiment, the encapsulation part 120 is injection molded with the coil frame 111 and the claw pole shell 112 as inserts. The coil frame 111 includes a winding tube 1111 and a plurality of protrusions. The plurality of protrusions of the coil frame 111 include a first protrusion 1114. The overall shape of the winding tube 1111 can be a circular tube shape. The plurality of protrusions 1114 of the coil frame 111 are all arranged to protrude inward from the inner peripheral wall of the winding tube 1111. The inward protrusion direction of any protrusion in the coil frame 111 is parallel to a radial direction of the winding tube 1111. The claw pole housing 112 includes multiple claw poles, including a first claw pole 1121. The first claw pole 1121 includes a first sidewall 1121a and a second sidewall 1121b. The first sidewall 1121a is located on one side of the first claw pole 1121 along the circumferential direction of the winding tube 1111, and the second sidewall 1121b is located on the other side of the first claw pole 1121 along the circumferential direction of the winding tube 1111. A first protrusion 1114 abuts against the first sidewall 1121a, and an encapsulation portion 120 engages with the second sidewall 1121b, so that the first protrusion 1114 and the encapsulation portion 120 play a circumferential limiting role for the first claw pole 1121, thereby making the claw pole position accuracy of the claw pole housing higher. This configuration is beneficial to improving the assembly accuracy of the stator assembly 100.

[0019] In this embodiment, the encapsulation portion 120 is fitted with the first protrusion 1114 and the first claw pole 1121, making the assembly of the encapsulation portion 120, the coil frame 111 and the claw pole housing 112 more compact.

[0020] In this embodiment, the manufacturing process of the stator assembly 100 includes: the coil frame 111 and the claw pole housing 112 are matched and limited, and the coil frame 111 and the claw pole housing 112 are used as inserts to form an encapsulation portion 120 by injection molding. The encapsulation portion 120 can be made of resin material. During the injection molding process, the molten resin can be injected into the first protrusion 1114 and the claw pole of the claw pole housing 112 under the guidance of the second sidewall 1121b. This arrangement is beneficial to improving the injection molding efficiency of manufacturing the stator assembly 100.

[0021] In this embodiment, the cross-section of the first claw pole 1121 is arc-shaped, and the outer arc surface of the first claw pole 1121 is abutted against the inner peripheral wall of the winding tube 1111, so that the winding tube 1111 can limit the first claw pole 1121.

[0022] In this embodiment, the arcuate direction of the first claw pole 1121 is parallel to the circumferential direction of the winding tube 1111, the first sidewall 1121a can be on one side of the arcuate direction of the first claw pole 1121, and the second sidewall 1121b can be on the other side of the arcuate direction of the first claw pole 1121.

[0023] In some embodiments, the first claw pole 1121 may be in the shape of a flat plate, and the first claw pole 1121 abuts against the inner peripheral wall of the winding tube 1111.

[0024] In some embodiments, the encapsulation portion 120 is located between the first protrusion 1114 and the first sidewall 1121a. This arrangement helps to reduce the gap between the first protrusion 1114 and the first sidewall 1121a, further improving the tightness of the assembly of the encapsulation portion 120, the coil frame 111 and the claw pole housing 112, and reducing the problem of poor water resistance of the stator assembly 100 caused by such gaps.

[0025] Combination Figure 3 and Figure 4 In this embodiment, the first protrusion 1114 includes a third sidewall 1114a, which is located on the side of the first protrusion 1114 away from the first claw pole 1121. The encapsulation portion 120 is engaged with the third sidewall 1114a, such that along the circumferential direction of the winding tube 1111, a portion of the encapsulation portion 120 is located on one side of the first claw pole 1121 and the first protrusion 1114, and another portion of the encapsulation portion 120 is located on the other side of the first claw pole 1121 and the first protrusion 1114, so that the encapsulation portion plays a circumferential limiting role on the first claw pole 1121 and the first protrusion 1114. During the injection molding process, the molten resin can flow along the third sidewall 1114a.

[0026] In this embodiment, the first claw pole 1121 and the first protrusion 1114 are fitted together in the encapsulation portion 120, which further improves the tightness of the assembly of the first claw pole 1121 and the first protrusion 1114.

[0027] Combination Figure 3 and Figure 4 In this embodiment, the first protrusion 1114 includes a fourth sidewall 1114a, which is located on the side of the first protrusion 1114 near the second sidewall 1121b. The fourth sidewall 1114a and the second sidewall 1121b partially overlap. The non-overlapping portion of the second sidewall 1121b and the fourth sidewall 1114a is combined with the encapsulation portion 120. The non-overlapping portion of the second sidewall 1121b and the fourth sidewall 1114a may include a portion of at least one of the second sidewall 1121b and the fourth sidewall 1114a.

[0028] In this embodiment, the non-overlapping portion of the second sidewall 1121b and the fourth sidewall 1114a includes a portion of the second sidewall 1121b, which is located on one side of the overlapping portion of the second sidewall 1121b and the fourth sidewall 1114a. The encapsulating portion 120 is engaged with this portion of the second sidewall 1121b. The non-overlapping portion of the second sidewall 1121b and the fourth sidewall 1114a also includes a portion of the fourth sidewall 1114a, which is located on the other side of the overlapping portion of the second sidewall 1121b and the fourth sidewall 1114a. The encapsulating portion 120 is engaged with this portion of the fourth sidewall 1114a.

[0029] Combination Figure 3 and Figure 4 In this embodiment, the claw pole housing 112 includes a second claw pole 1122. The second claw pole 1122 is located on the side of the first claw pole 1121 away from the first protrusion 1114, so that the first claw pole 1121 can be approximately located between the second claw pole 1122 and the first protrusion 1114. The second claw pole 1122 includes a fifth sidewall 1122a, which is located near the second sidewall 1121b, so that the fifth sidewall 1122a and the second sidewall 1121b are relatively close to each other. The encapsulation portion 120 is engaged with the fifth sidewall 1122a. By circumferentially limiting the fifth sidewall 1122a, the encapsulation portion 120 can achieve the effect of circumferentially limiting the second claw pole 1122. Furthermore, by circumferentially limiting the second claw pole 1122 by the encapsulation portion 120, the assembly accuracy of the overall stator assembly 100 can also be improved.

[0030] In this embodiment, the encapsulation portion 120 is injection molded between the second sidewall 1121b and the fifth sidewall 1122a. During the injection molding process, the molten resin can be injected into the claw electrode housing 112 under the joint guidance of the second sidewall 1121b and the fifth sidewall 1122a. This arrangement is more conducive to improving the injection molding efficiency when manufacturing the stator assembly 100.

[0031] In this embodiment, the first claw pole 1121 and the second claw pole 1122 are integrally formed.

[0032] In this embodiment, the second claw pole 1122 is positioned adjacent to the first claw pole 1121 relative to the other claw poles of the claw pole housing 112.

[0033] In this embodiment, there is no protrusion of the coil frame 111 between the second sidewall 1121b and the fifth sidewall 1122a, which makes it easier to assemble the coil frame 111 and the claw pole housing 112 when assembling them. It also reduces the resistance to injection molding between the second sidewall 1121b and the fifth sidewall 1122a, which is more conducive to improving the injection molding efficiency when manufacturing the stator assembly 100.

[0034] Combination Figure 3 and Figure 4 In this embodiment, the second claw pole 1122 includes a sixth sidewall 1122b, which is located on the side of the second claw pole 1122 away from the second sidewall 1121b, such that the sixth sidewall 1122b is relatively far from the first sidewall 1121a. The coil frame 111 has multiple protrusions, including a second protrusion 1115, which protrudes inward from the inner peripheral wall of the winding tube 1111. The protrusion direction of 15 can be arranged parallel to one radial direction of the winding tube 1111. The second protrusion 1115 abuts against the sixth side wall 1122b, so that the second protrusion 1115 has a circumferential limiting effect on the second claw pole 1122. Furthermore, by limiting the second claw pole 1122 circumferentially through the second protrusion 1115, the circumferential limiting effect of the encapsulation part 120, the first protrusion 1114 and the first claw pole 1121 can be improved.

[0035] In this embodiment, the first protrusion 1114 and the second protrusion 1115 are integrally formed. Along the circumferential direction of the winding tube 1111, the first protrusion 1114 and the second protrusion 1115 are spaced apart, so that the first claw pole 1121 and the second claw pole 1122 can be disposed between the first protrusion 1114 and the second protrusion 1115.

[0036] In this embodiment, the second protrusion 1115 is positioned relative to the other protrusions of the coil frame, adjacent to the first protrusion 1114.

[0037] Combination Figure 3 and Figure 4 In this embodiment, the claw pole housing 112 includes a third claw pole 1123. The third claw pole 1123 is located on one side of the first claw pole 1121 along the circumferential direction of the winding tube 1111 and is disposed near the first protrusion 1114, so that the first protrusion 1114 can be located between the first claw pole 1121 and the third claw pole 1123. The third claw pole 1123 includes a seventh sidewall 1123a and an eighth sidewall 1123b. The seventh sidewall 1123a is located on the side of the third claw pole 1123 near the first protrusion 1114, so that the seventh sidewall 1123a and the first protrusion 1114 are disposed together. The starting portions 1114 are relatively close together, and the eighth side wall 1123b is located on the other side of the third claw pole 1123 along the winding tube 1111 away from the first protrusion 1114, so that the eighth side wall 1123b and the second side wall 1121b are relatively far apart. The encapsulation portion 120 is engaged with the seventh side wall 1123a and the eighth side wall 1123b, so that the encapsulation portion 120 has a circumferential limiting effect on the third claw pole 1123. Furthermore, by encapsulating the third claw pole 1123 circumferentially limiting the third claw pole 1123, the assembly accuracy of the overall stator assembly 100 can also be improved.

[0038] In this embodiment, the first claw pole 1121 and the third claw pole 1123 are integrally formed.

[0039] In this embodiment, the third claw pole 1123 and the second claw pole 1122 are disposed adjacent to the first claw pole 1121 relative to the other claw poles of the claw pole housing 112, respectively located on both sides of it.

[0040] In this embodiment, a portion of the encapsulation portion 120 is disposed between the first protrusion 1114 and the third claw pole 1123, and the encapsulation portion 120 that engages with the seventh sidewall 1123a also engages with the first protrusion 1114.

[0041] In this embodiment, during the injection molding process, the molten resin can be injected into the claw pole housing 112 and the coil frame 111 under the joint guidance of the seventh sidewall 1123a and the sidewall of the first protrusion 1114. This arrangement is more conducive to improving the injection molding efficiency when manufacturing the stator assembly 100.

[0042] Combination Figure 4 In this embodiment, the length direction of the first protrusion 1114 is parallel to the plane where the first sidewall 1121a is located, so that the first protrusion 1114 can fit against the first sidewall 1121a. The length direction of the first protrusion 1114 is inclined relative to the generatrix direction of the winding tube 1111, so that the sidewall area of ​​the first protrusion 1114 and the sidewall area of ​​the first sidewall 1121a are larger, which is beneficial to improving the contact surface between the two, and thus beneficial to improving the assembly accuracy of the stator assembly 100.

[0043] In this embodiment, the length direction of the first protrusion 1114 is not the same as the length direction of the second protrusion 1115, so that the encapsulation part is interlocked with the multiple claw poles of the claw machine shell and the multiple protrusions of the coil skeleton.

[0044] Combination Figure 3 and Figure 6 In this embodiment, the coil frame 111 includes a first end cap 1112, which surrounds the winding tube 1111, thereby restricting the winding 114 wound around the winding tube 1112. The top wall of the first end cap 1112 smoothly transitions to the top wall of the first protrusion 1114. When assembling the coil frame 111 and the claw electrode housing 112, the top wall of the first end cap 1112 guides the claw electrodes of the claw electrode housing 112, facilitating their assembly. During injection molding, the top wall of the first end cap 1112 guides the molten resin, which helps improve the injection molding efficiency when manufacturing the stator assembly 100.

[0045] In this embodiment, the top wall of the first end cap 1112 includes several inclined surfaces, through which there is a smooth transition with the top wall of the first end cap 1112.

[0046] In some embodiments, the top wall of the first end cap 1112 includes a plurality of arc surfaces, through which there is a smooth transition with the top wall of the first end cap 1112.

[0047] In this embodiment, the coil frame 111 includes a second end cap 1113, which is also arranged around the winding tube 1111. The first end cap 1112 and the second end cap 1113 are arranged along the axial direction of the winding tube 1111. The winding 114 is basically arranged between the first end cap 1112 and the second end cap 1113. The bottom wall of the second end cap 1113 and the top wall of the first protrusion 1114 are smoothly transitioned.

[0048] In this embodiment, the top walls of the plurality of protrusions of the coil frame 111 smoothly transition to the top wall of the first end cap 1112, and the bottom walls of the plurality of protrusions of the coil frame 111 smoothly transition to the bottom wall of the second end cap 1113.

[0049] Combination Figure 3 and Figure 5 In this embodiment, the claw electrode housing 112 includes a first end plate 1124, and the claw electrode of the claw electrode housing 112 extends axially from the first end plate 1124. The first end plate 1124 includes a notch 1124a, and a partial encapsulation portion 120 is located in the notch of the notch 1124a. The encapsulation portion 120 is engaged with the inner sidewall of the notch 1124a. The inner sidewall of the notch 1124a and the second sidewall 1121b are smoothly transitioned. During the injection molding process, the molten resin can be injected under the guidance of the inner sidewall of the notch 1124a and the second sidewall 1121b, which further helps to improve the efficiency of injection molding.

[0050] In this embodiment, the inner sidewall of the notch 1124a and the second sidewall 1121b are connected by a planar transition, so that the notch of the notch 1124a is connected to the gap between the first claw pole 1121 and the second claw pole 1122.

[0051] In some embodiments, the inner wall of the notch 1124a and the second sidewall 1121b can be transitioned by an arc surface.

[0052] In this embodiment, there may be multiple notches 1124a in the first end plate 1124. The notches 1124a and the claw poles of the claw pole housing 112 are alternately arranged. The inner sidewall of the notch 1124a can be smoothly transitioned to the corresponding claw pole sidewall of the claw pole housing 112.

[0053] Combination Figure 3 and Figure 5In this embodiment, the claw plate 113 includes multiple claws, and the multiple claws of the claw plate 113 are interleaved with the multiple claws of the claw shell. The encapsulation part is injection molded with the claw plate as an insert, and the encapsulation part is fitted with the multiple claws of the claw plate 113, the multiple claws of the claw shell, and the multiple protrusions of the coil frame.

[0054] In this embodiment, the claw electrode plate 113 has a plurality of claw electrodes, including a fourth claw electrode 1131. The fourth claw electrode 1131 is staggered with the first claw electrode 1121, and the fourth claw electrode 1131 is adjacent to the first claw electrode 1121 relative to the other claw electrodes of the claw electrode plate 113. The fourth claw electrode 1131 includes a ninth sidewall 1131a and a tenth sidewall 1131b. The ninth sidewall 1131a is located on one side of the second claw electrode 1122 along the circumferential direction of the winding tube 1111, and the tenth sidewall 1131b is located on the other side of the second claw electrode 1122 along the circumferential direction of the winding tube 1111. The ninth sidewall 1131a and the first sidewall 1121a are arranged face to face. The first protrusion 1114 abuts against the ninth sidewall 1131a, and the encapsulation portion 120 engages with the tenth sidewall 1131b.

[0055] like Figure 3 As shown, in this embodiment, the claw plate 113 includes a second end plate 1132, and a plurality of claws of the claw plate 113 extend axially from the second end plate 1132. The extension direction of the claws of the claw plate 113 is opposite to the extension direction of the claws of the claw outer shell 112.

[0056] In this embodiment, the number of claw poles in the claw plate 113 is equal to the number of claw poles in the claw shell 112, which is twelve. The twelve claw poles of the claw plate 113 and the twelve claw poles of the claw shell 112 are arranged alternately.

[0057] In this embodiment, the number of protrusions on the coil frame 111 is less than the number of claw poles on the claw pole housing 112, and also less than the number of claw poles on the claw pole plate 113. Specifically, the number of protrusions on the coil frame 111 is eight. This arrangement makes it easier for the claw pole plate 113 and the claw pole housing 112 to fit into the coil frame 111.

[0058] In this embodiment, the second end plate 1132 may also be provided with multiple notches.

[0059] In this embodiment, the claw electrode plate 113 is a one-piece piece made of stamped metal plate, and the claw electrode outer shell 112 is also a one-piece piece made of stamped metal plate.

[0060] In this embodiment, the coil frame 111 is an integral part made by injection molding. Multiple protrusions of the coil frame 111 are integrally formed on the inner peripheral wall of the winding drum 1111, which improves the structural strength of the winding drum 1111. This arrangement reduces the problem of deformation of the winding drum 1111 during the winding process of the winding 114.

[0061] In this embodiment, the claw electrode plate 113 is matched with the outer sleeve of the claw electrode shell 112.

[0062] In some embodiments, the overall mating structure of the claw plate 113 and the claw housing 112 is considered as the claw housing in this embodiment.

[0063] Combination Figure 3 and Figure 5 In this embodiment, there are two coil assemblies 110, which are coaxially arranged and axially distributed. The encapsulation part 120 is injection molded with the two coil assemblies 110 as inserts.

[0064] Combination Figure 5 The winding 114 is made of enameled wire and is wound on the winding spool 1111. One end of the winding 114 is wound and welded to a winding pin 115, and the other end of the winding 114 is wound and welded to another winding pin 115.

[0065] The following is combined with Figure 1 This document details one embodiment of the electric valve 10. The electric valve 10 includes the stator assembly 100 described above, and also includes a valve assembly 200. The valve assembly 200 includes a magnetic rotor assembly 210, a valve core assembly 220, and a valve port 230. A coil assembly 110 is arranged around the magnetic rotor assembly 210. When the coil assembly 110 is energized, it can drive the magnetic rotor assembly 210 to rotate. The rotating magnetic rotor assembly 210 can cause the valve core assembly 220 to sit on or move away from the valve port 230, allowing the valve core assembly 220 to adjust the valve port 230, thereby achieving a throttling effect.

[0066] like Figure 1 and Figure 3 As shown, in this embodiment, the stator assembly 100 has a valve cavity 116, at least a portion of the valve assembly 200 is located in the valve cavity 116, and the inner peripheral wall forming the valve cavity 116 includes the inner wall of the claw pole housing 112, the inner wall of the claw pole plate 113, the inner wall of the protrusion of the coil frame 111, and the inner wall of the encapsulation portion 120.

[0067] The electric valve 10 described above can be used in automotive, household or commercial air conditioning cooling systems, as well as in automotive battery cooling systems or battery cooling systems in other fields. In the above-mentioned cooling systems, the electric valve 10 is generally used as a throttling element or a switching element, or an element that combines throttling and switching functions.

[0068] The embodiments described above are merely examples of several implementations of this application, and while the descriptions are quite specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications without departing from the concept of this application, and these modifications all fall within the scope of protection of this application.

Claims

1. A stator assembly, characterized in that, The device includes an encapsulation portion (120), a coil frame (111), and a claw electrode housing (112). The encapsulation portion (120) is injection molded with the coil frame (111) and the claw electrode housing (112) as inserts. The coil frame (111) includes a winding tube (1111) and a first protrusion (1114), which protrudes inward from the inner peripheral wall of the winding tube (1111). The claw electrode housing (112) includes a first claw electrode (1121). It includes a first sidewall (1121a) and a second sidewall (1121b). The first sidewall (1121a) is located on one side of the first claw pole (1121) along the circumferential direction of the winding tube (1111), and the second sidewall (1121b) is located on the other side of the first claw pole (1121) along the circumferential direction of the winding tube (1111). The first protrusion (1114) abuts against the first sidewall (1121a), and the encapsulation portion (120) engages with the second sidewall (1121b).

2. The stator assembly according to claim 1, characterized in that, The first protrusion (1114) includes a third sidewall (1114a) located on the side of the first protrusion (1114) away from the first claw pole (1121), and the encapsulation portion (120) engages with the third sidewall (1114a).

3. The stator assembly according to claim 2, characterized in that, The first protrusion (1114) includes a fourth sidewall (1114b) located on the side of the first protrusion (1114) near the second sidewall (1121b). The fourth sidewall (1114b) partially overlaps with the second sidewall (1121b), and the non-overlapping portions of the second sidewall (1121b) and the fourth sidewall (1114b) are engaged with the encapsulation portion (120).

4. The stator assembly according to claim 3, characterized in that, A portion of the second sidewall (1121b) is located on one side of the overlapping portion of the second sidewall (1121b) and the fourth sidewall (1114b), and a portion of the fourth sidewall (1114b) is located on the other side of the overlapping portion of the second sidewall (1121b) and the fourth sidewall (1114b).

5. The stator assembly according to any one of claims 1 to 4, characterized in that, The claw electrode housing (112) includes a second claw electrode (1122), which is located on the side of the first claw electrode (1121) away from the first protrusion (1114). The second claw electrode (1122) includes a fifth sidewall (1122a), which is located on the side of the second claw electrode (1122) close to the second sidewall (1121b). The encapsulation portion (120) engages with the fifth sidewall (1122a).

6. The stator assembly according to claim 5, characterized in that, The second claw pole (1122) includes a sixth sidewall (1122b) located on the other side of the second claw pole (1122) away from the second sidewall (1121b), and the coil frame (111) includes a second protrusion (1115), the sixth sidewall (1122b) abutting against the second protrusion (1115).

7. The stator assembly according to any one of claims 1 to 6, characterized in that, The claw electrode housing (112) includes a third claw electrode (1123), which is located on the side of the first claw electrode (1121) near the first protrusion (1114). The third claw electrode (1123) includes a seventh sidewall (1123a) and an eighth sidewall (1123b). The seventh sidewall (1123a) is located on the side of the third claw electrode (1123) near the first protrusion (1114), and the eighth sidewall (1123b) is located on the other side of the third claw electrode (1123) away from the first protrusion (1114). The encapsulation portion (120) is engaged with the seventh sidewall (1123a) and the eighth sidewall (1123b).

8. The stator assembly according to any one of claims 1 to 7, characterized in that, The length direction of the first protrusion (1114) is parallel to the plane where the first sidewall (1121a) is located, and the length direction of the first protrusion (1114) is inclined relative to the generatrix direction of the winding tube (1111).

9. The stator assembly according to any one of claims 1 to 8, characterized in that, The coil frame (111) includes a first end cap (1112) which surrounds the winding tube (1111) and the top wall of the first end cap (1112) smoothly transitions to the top wall of the first protrusion (1114).

10. An electric valve, characterized in that, The device includes a valve assembly (200) and a stator assembly (100). The valve assembly (200) includes a magnetic rotor assembly (210). The stator assembly (100) includes a coil assembly (110) and an encapsulation portion (120). The coil assembly (110) is disposed around the magnetic rotor assembly (210). The encapsulation portion (120) is injection molded with the coil assembly (110) as an insert. The coil assembly (110) includes a coil frame (111) and a claw pole housing (112). The coil frame (111) includes a winding tube (1111) and a first protrusion (1114). The first protrusion (1114) extends from the winding tube (1111). The inner peripheral wall of the claw electrode is convex inward. The claw electrode housing (112) includes a first claw electrode (1121). The first claw electrode (1121) includes a first sidewall (1121a) and a second sidewall (1121b). The first sidewall (1121a) is located on one side of the first claw electrode (1121) along the circumferential direction of the winding tube (1111), and the second sidewall (1121b) is located on the other side of the first claw electrode (1121) along the circumferential direction of the winding tube (1111). The first protrusion (1114) abuts against the first sidewall (1121a), and the encapsulation portion (120) engages with the second sidewall (1121b).

Images