Stator assembly and motorized valve

Abstract

The application relates to a stator assembly and an electric valve, which comprises a coil assembly, a claw pole shell and a grounding pin, at least part of the coil assembly is located in the claw pole shell, the claw pole shell comprises a limiting plate, the limiting plate is stamped and formed from the claw pole shell, the limiting plate clamps the grounding pin or the limiting plate and the claw pole shell clamp the grounding pin, so that the limiting structure of the claw pole shell and the grounding pin is simpler, and the product cost of the stator assembly is reduced.

Description

Technical Field

[0001] This application relates to electric actuators, 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 grounding pin and a claw pole housing. The claw pole housing includes a protrusion, and the grounding pin has a through hole. The protrusion is located within the through hole and is riveted to the grounding pin for fixation. However, the aforementioned limiting structure of the grounding pin and claw pole housing is complex, which is detrimental to reducing the product cost of the stator assembly. Utility Model Content

[0003] The purpose of this application is to provide a stator assembly and an electric valve that can help reduce the product cost of the stator assembly and the electric valve.

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

[0005] A stator assembly includes a coil assembly, a claw pole housing, and a grounding pin. At least a portion of the coil assembly is located within the claw pole housing. The claw pole housing includes a limiting plate that is stamped from the claw pole housing. The limiting plate clamps the grounding pin, or the limiting plate and the claw pole housing clamp the grounding pin.

[0006] In the stator assembly provided in this application, the limiting plate is stamped from the claw pole housing, and the limiting plate clamps the grounding pin, or the limiting plate and the claw pole housing clamp the grounding pin, which makes the limiting structure of the claw pole housing and the grounding pin simpler and helps to reduce the product cost of the stator assembly.

[0007] An electric valve includes a valve assembly and a stator assembly. The valve assembly includes a magnetic rotor, a valve core, and a valve port. The stator assembly is disposed around the outer peripheral wall of the magnetic rotor. A throttling orifice is formed between the valve core and the valve port. The magnetic rotor can drive the valve core to move and adjust the flow area of ​​the throttling orifice. The stator assembly includes a coil assembly, a claw pole housing, and a grounding pin. At least a portion of the coil assembly is located within the claw pole housing. The claw pole housing includes a limiting plate, which is stamped from the claw pole housing. The limiting plate clamps the grounding pin, or the limiting plate and the claw pole housing clamp the grounding pin.

[0008] In the electric valve provided in this application, the limiting plate is stamped from the claw electrode housing, and the limiting plate clamps the grounding pin, or the limiting plate and the claw electrode housing clamp the grounding pin, which makes the limiting structure of the claw electrode housing and the grounding pin simpler and helps to reduce the product cost of the electric valve. Attached Figure Description

[0009] Figure 1A cross-sectional structural schematic diagram of the electric valve provided in the first embodiment of this application;

[0010] Figure 2 for Figure 1 A schematic diagram of the first cross-sectional structure of the middle stator assembly;

[0011] Figure 3 for Figure 2 A magnified view of a portion of the structure at point "A" in the diagram;

[0012] Figure 4 for Figure 1 A schematic diagram of the second cross-sectional structure of the middle stator assembly;

[0013] Figure 5 for Figure 4 A magnified view of a portion of the structure at point "B" in the diagram;

[0014] Figure 6 for Figure 1 A schematic diagram of the third cross-sectional structure of the middle stator assembly;

[0015] Figure 7 for Figure 6 A three-dimensional structural diagram of the intermediate coil assembly, claw pole housing, and grounding pin assembly;

[0016] Figure 8 for Figure 7 An exploded structural diagram of the intermediate coil assembly, claw pole housing, and grounding pin;

[0017] Figure 9 A three-dimensional structural schematic diagram of the stator assembly provided in the second embodiment of this application;

[0018] Figure 10 for Figure 9 A schematic diagram of the first cross-sectional structure of the middle stator assembly;

[0019] Figure 11 for Figure 9 A schematic diagram of the second cross-sectional structure of the middle stator assembly;

[0020] Figure 12 for Figure 9 A three-dimensional structural diagram of a grounding pin;

[0021] In the diagram: 10-Electric valve, 100-Stator assembly, 200-Valve assembly, 110-Coil assembly, 120-Claw pole housing, 130-Grounding pin, 140-Circuit board assembly, 150-Wiring pin, 160-Encapsulation section, 170-Cover, 180-Control cavity; 111-Winding, 112-Insulating frame, 113-Winding pin, 121-First housing, 122-Second housing, 123-Coil cavity, 1211-First end plate, 1212-First claw pole, 1213-Cylinder section, 1214-Limiting plate, 1211a-First opening. 1213a-Second opening, 1214a-First bend, 1214b-Second bend, 1214c-Third bend, 1221-Second end plate, 1222-Second claw pole, 131-Bend section, 132-First limiting section, 133-Second limiting section, 134-Recessed section, 135-Connecting section, 1321-First outer side wall, 1322-Second outer side wall, 161-Interface cavity, 162-Valve cavity, 210-Rotor assembly, 220-Valve port, 230-Throttle port, 240-Sleeve, 211-Magnetic rotor, 212-Valve core. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments are further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0023] The following is combined Figures 1 to 12 This application provides a detailed description of a stator assembly 100 provided in an embodiment. Such a stator assembly 100 includes a coil assembly 110, a claw pole housing 120, a grounding pin 130, a circuit board assembly 140, a wiring pin 150, an encapsulation portion 160, and a cover 170.

[0024] In one possible implementation, at least a portion of the coil assembly 110 is located within the claw pole housing 120, which includes a limiting plate 1214. The limiting plate 1214 is stamped from the claw pole housing 120 and clamps the grounding pin 130. Alternatively, the limiting plate 1214 and the claw pole housing 120 clamp the grounding pin 130. This arrangement simplifies the limiting structure between the claw pole housing 120 and the grounding pin 130, thereby reducing the product cost of the stator assembly 100.

[0025] For ease of understanding, such as Figures 1 to 3As shown, in the first embodiment, the coil assembly 110 and the claw pole housing 120 are coaxially arranged. The claw pole housing 120 has a coil cavity 123, and the coil assembly 110 is generally disposed in the coil cavity 123. The claw pole housing 120 is formed by stamping a metal sheet, and the limiting plate 1214 is formed by stamping from the claw pole housing 120. Therefore, the limiting plate 1214 can be formed at the same time as the claw pole housing 120 is formed by stamping, which helps to reduce the processing cost of the claw pole housing 120. The limiting plate 1214 and the claw pole housing 120 clamp the grounding pin 130. Compared with related technologies, the clamping limiting structure can eliminate the through hole of the grounding pin 130 and the protrusion of the claw pole housing 120, making the structure of the grounding pin 130 and the claw pole housing 120 simpler, which helps to reduce the processing cost of the grounding pin 130 and the claw pole housing 120, and thus helps to reduce the product cost of the stator assembly 100.

[0026] like Figure 9 As shown, in the second embodiment, the cross-section of the limiting plate 1214 can be U-shaped, and the cross-section of the limiting plate 1214 is parallel to the axial direction of the winding 111. The limiting plate 1214 clamps the grounding pin 130.

[0027] In one possible implementation, the claw electrode housing 120 includes an opening, at least a portion of which is located on one axial or radial side of the coil assembly 110, and at least a portion of the limiting plate 1214 extends from the opening toward the outside of the claw electrode housing 120.

[0028] For ease of understanding, such as Figure 4 , Figure 5 and Figure 7 As shown, in the first embodiment, the opening includes a first opening 1211a and a second opening 1213a. The first opening 1211a is generally located on the radial side of the coil assembly 110, and the second opening 1213a is generally located on the axial side of the coil assembly 110. The second bent portion 1214b of the limiting plate 1214 extends from the opening toward the outside of the claw electrode housing 120, such that the limiting plate 1214 is generally located outside the claw electrode housing 120, so that the limiting plate 1214 and the claw electrode housing 120 can clamp the grounding pin 130. This configuration takes into account the leftover material generated when the first opening 1211a is formed by stamping the claw pole housing 120. The second bent portion 1214b of the limiting plate 1214 extends from the first opening 1211a toward the outside of the claw pole housing 120, so that the leftover material generated when the first opening 1211a is formed by stamping can be used to make the limiting plate 1214. This is beneficial to improving the utilization rate of raw materials, and thus more beneficial to reducing the product cost of the stator assembly 100.

[0029] like Figure 9 and Figure 10As shown, in the second embodiment, the second opening 1213a is located approximately on the radial side of the coil assembly 110, and the first bent section 131 of the limiting plate 1214 extends from the second opening toward the outside of the claw pole housing 120, such that the leftover material generated during the stamping of the second opening 1213a can be used to make the limiting plate 1214.

[0030] In some embodiments, the first opening 1211a may be located generally on one radial side of the coil assembly 110, and the limiting plate 1214 may extend from the first opening 1211a toward the outside of the claw pole housing 120.

[0031] In one possible implementation, the opening of the opening is located on the outer wall of the claw electrode housing 120, and the grounding pin 130 includes a bent section 131, at least a portion of which is bent toward the opening of the opening relative to the first outer wall 1321 of the grounding pin 130, and at least a portion of which is located at the opening of the opening.

[0032] For ease of understanding, such as Figure 2 and Figure 3 As shown, in the first embodiment, the opening of the first opening 1211a is located on the outer wall of the claw electrode housing 120, the first outer wall 1321 is located on the outer wall of the first limiting segment 132 of the grounding pin 130, the first bending segment 131 is bent relative to the first limiting segment 132, the bending segment 131 bends toward the opening of the opening, and the bending segment 131 is approximately located at the opening of the opening, so that the bending segment 131 and the opening can be limited and matched, which is beneficial to improving the clamping effect of the limiting plate 1214 and the claw electrode housing 120 on the grounding pin 130.

[0033] In one possible implementation, the grounding pin 130 includes a first limiting segment 132 and a second limiting segment 133, with a bent segment 131 located between the first limiting segment 132 and the second limiting segment 133. The first limiting segment 132 abuts against the outer wall of the claw electrode housing 120 and is located on one side of the opening. The second limiting segment 133 abuts against the outer wall of the claw electrode housing 120 and is located on the other side of the opening.

[0034] like Figure 2 and Figure 3As shown, in the first embodiment, the first limiting segment 132, the bending segment 131, and the second limiting segment 133 are integrally formed. The first limiting segment 132, the bending segment 131, and the second limiting segment 133 are arranged sequentially along the length direction of the grounding pin 130. The first limiting segment 132 and the second limiting segment 133 are located on both sides of the opening and abut against the outer wall of the claw electrode housing 120. This arrangement allows the claw electrode housing 120 to limit the grounding pin 130 along the length direction of the grounding pin 130, which is more conducive to improving the clamping effect of the limiting plate 1214 and the claw electrode housing 120 on the grounding pin 130.

[0035] like Figure 2 and Figure 3 As shown, in the first embodiment, the limiting plate 1214 abuts against the bent section 131. This arrangement is more conducive to improving the clamping effect of the limiting plate 1214 and the claw pole housing 120 on the grounding pin 130. The limiting plate 1214 abuts against the outer wall of the bent section 131. Under the clamping of the limiting plate 1214 and the claw pole housing 120, the grounding pin 130 is deformed by the compression of the limiting plate 1214 and forms the bent section 131, thereby realizing the bending setting of the bent section 131 relative to the first limiting section 132, which helps to simplify the processing of the stator assembly 100.

[0036] like Figure 2 and Figure 3 As shown, in the first embodiment, the opening of the first opening 1211a is located on the outer end wall of the first end plate 1211, and the first limiting segment 132 and the second limiting segment 133 abut against the outer end wall of the first end plate 1211.

[0037] In some embodiments, the opening of the first opening 1211a may be located on the outer peripheral wall of the cylindrical portion 1213, and the first limiting segment 132 and the second limiting segment 133 abut against the outer peripheral wall of the cylindrical portion 1213.

[0038] In one possible implementation, the encapsulation portion 160 is injection molded with the coil assembly 110, the claw electrode housing 120 and the grounding pin 130 as inserts, and the opening extends from the outer wall of the claw electrode housing 120 to the inner wall of the claw electrode housing 120, with a portion of the encapsulation portion 160 located at the opening of the opening.

[0039] For ease of understanding, such as Figure 4 and Figure 5As shown, in the first embodiment, the first opening 1211a extends from the outer end wall of the first end plate 1211 to the inner end wall of the first end plate 1211. When the encapsulation portion 160 is formed by injection molding, the opening of the first opening 1211a communicates with the coil cavity 123, and the molten resin can enter the coil cavity 123 through the opening of the first opening 1211a. The coil assembly 110, the claw pole housing 120, and the grounding pin 130 are inserts of the encapsulation portion 160. The limiting plate 1214, the first limiting segment 132, the second limiting segment 133, and the bending segment 131 are located inside the encapsulation portion 160, so that the encapsulation portion 160 can protect the limiting structure of the claw pole housing 120 and the grounding pin 130, which is beneficial for the stator assembly 100 to work reliably in harsh environments such as humidity and high temperature.

[0040] like Figures 9 to 11 As shown, in the second embodiment, the second opening 1213a extends from the outer peripheral wall of the cylindrical portion 1213 to the inner peripheral wall of the cylindrical portion 1213, and the stator assembly 100 can also be encapsulated. When the encapsulation portion 160 is formed by injection molding, the opening of the second opening 1213a communicates with the coil cavity 123, and the molten resin can enter the coil cavity 123 through the opening of the second opening 1213a.

[0041] In some embodiments, the first opening 1211a extends from the outer peripheral wall of the cylindrical portion 1213 to the inner peripheral wall of the cylindrical portion 1213.

[0042] In one possible implementation, the grounding pin 130 includes a recessed section 134 that abuts against the limiting plate 1214, and at least a portion of the recessed section 134 is recessed inward relative to the second outer sidewall 1322 of the grounding pin 130.

[0043] For ease of understanding, such as Figure 2 and Figure 3 As shown, in the first embodiment, the second outer sidewall 1322 is located on the side of the first limiting segment 132 away from the first outer sidewall 1321, the bent segment 131 is located between the first limiting segment 132 and the recessed segment 134, and the recessed segment 134 is approximately located at the opening of the first opening 1211a.

[0044] In the first embodiment, under the clamping of the limiting plate 1214 and the claw pole housing 120, the grounding pin 130 is deformed by the compression of the limiting plate 1214 and forms a recessed section 134. This results in the recessed section 134 being recessed relative to the first limiting section 132 toward the first opening 1211a, so that the grounding pin 130 can be fitted with the limiting plate 1214 and the claw pole housing 120, which is beneficial to simplifying the processing of the stator assembly 100.

[0045] like Figures 9 to 12As shown, in the second embodiment, the second outer sidewall 1322 is located in the connecting section 135. Under the clamping of the limiting plate 1214, the grounding pin 130 is deformed by the compression of the limiting plate 1214 and forms a recessed section 134, so that the grounding pin 130 is fitted with the limiting plate 1214.

[0046] like Figure 11 and Figure 12 As shown, in the second embodiment, the limiting plate 1214 is clamped on the outer walls of both sides of the recessed section 134, and the outer walls of both sides of the recessed section 134 are recessed inward relative to the outer walls of both sides of the connecting section 135.

[0047] In one possible implementation, the stator assembly 100 includes a circuit board assembly 140 electrically connected to the coil assembly 110, and a grounding pin 130 including a connecting segment 135 electrically connected to the circuit board, the connecting segment 135 being located on the side of the recessed segment 134 away from the claw pole housing 120.

[0048] like Figures 1 to 3 As shown, in the first embodiment, at least a portion of the circuit board assembly 140 is located on the radial side of the claw electrode housing 120, the length direction of the connecting segment 135 is perpendicular to the axial direction of the claw electrode housing 120, and the connecting segment 135 is inserted into and soldered to the circuit board.

[0049] In some embodiments, at least a portion of the circuit board assembly 140 is located on one axial side of the claw electrode housing 120, the length direction of the connecting segment 135 is parallel to the axial direction of the claw electrode housing 120, and the connecting segment 135 is inserted into and soldered to the circuit board assembly 140.

[0050] In some embodiments, when the grounding pin 130 is clamped by the limiting plate 1214 or the limiting plate 1214 and the claw electrode housing 120, the connecting section 135 is fixed. This arrangement helps to improve the positional accuracy of the connecting section 135, so as to improve the reliability of the assembly of the grounding pin 130 with the circuit board assembly 140.

[0051] The limiting plate 1214 includes a first bent portion 1214a, a second bent portion 1214b, and a third bent portion 1214c. The first bent portion 1214a, the second bent portion 1214b, and the third bent portion 1214c clamp the grounding pin 130. The first bent portion 1214a is located between the second bent portion 1214b and the third bent portion 1214c. The third bent portion 1214c is bent relative to the second bent portion 1214b toward the first bent portion 1214a.

[0052] like Figure 11 and Figure 12As shown, in the second embodiment, the first bent portion 1214a, the second bent portion 1214b, and the third bent portion 1214c are integrally formed. The first bent portion 1214a extends from the second opening 1213a outward to the claw pole housing 120. The second bent portion 1214b abuts against one side of the recessed section 134, and the third bent section 131 abuts against the other side of the recessed section 134 away from the second bent section 131.

[0053] like Figure 10 As shown, in the second embodiment, the first limiting segment 132 abuts against the outer peripheral wall of the claw pole housing 120, and the recessed segment 134 is located between the connecting segment 135 and the first limiting segment 132.

[0054] In some embodiments, the second bend 1214b may extend from the first opening 1211a outward to the claw pole housing 120, the second bend 1214b abutting against one side of the recessed section 134, and the third bend 131 abutting against the other side of the recessed section 134 away from the second bend 131.

[0055] In one possible implementation, the claw pole housing 120 includes a first end plate 1211 and a cylindrical portion 1213. The first end plate 1211 is coaxially disposed with the coil assembly 110. The first end plate 1211 and the coil assembly 110 are arranged along the axial direction of the stator assembly 100. The sleeve is disposed around the outer peripheral wall of the coil assembly. The first end plate 1211 and the cylindrical portion 1213 are integrally disposed or the outer peripheral wall of the first end plate 1211 is limited and engaged with the inner peripheral wall of the cylindrical portion 1213. The limiting plate 1214 is stamped from the first end plate 1211 or the cylindrical portion 1213.

[0056] For ease of understanding, such as Figure 7 and Figure 8 As shown, in the first embodiment, the claw electrode housing 120 includes a first housing 121, the first housing 121 includes a first end plate 1211 and a cylindrical portion 1213 integrally formed, and a limiting plate 1214 is stamped from the first end plate 1211.

[0057] like Figure 7 and Figure 8 As shown, in the first embodiment, the claw electrode housing 120 includes a second housing 122, and the first housing 121 and the second housing 122 are mutually limiting and cooperating to form a coil cavity 123.

[0058] In the first embodiment, the first housing 121 is made of stamped metal sheet, and the second housing 122 is also made of stamped metal sheet, which may be galvanized steel sheet.

[0059] like Figure 8As shown, in the first embodiment, the first end plate 1211 is an annular plate, the cylindrical portion 1213 is cylindrical, and the first housing 121 includes a first claw pole 1212, which extends from the first end plate 1211 along the axial direction of the stator assembly 100. The cylindrical portion 1213 also extends from the first end plate 1211 along the axial direction of the stator assembly 100, and the first claw pole 1212 is located inside the cylindrical portion 1213. The second housing 122 includes a second claw pole 1222 and a second end plate 1221, with the second claw pole 1222 extending from the second end plate 1221 along the axial direction of the stator assembly 100. The outer peripheral wall of the second end plate 1221 is in a limiting fit with the inner peripheral wall of the cylindrical portion 1213. There are at least two first claw poles 1212 and at least two second claw poles 1222. The first claw poles 1212 and the second claw poles 1222 are alternately arranged along the circumference of the stator assembly 100. The coil assembly 110 is arranged around the first claw poles 1212 and the second claw poles 1222. When the stator assembly 100 is working, the stator assembly 100 can generate an alternating magnetic field, which is beneficial to improving the driving performance of the stator assembly 100.

[0060] like Figure 9 As shown, in the second embodiment, the limiting plate 1214 is stamped from the cylindrical portion 1213.

[0061] In some embodiments, the limiting plate 1214 is also stamped from the second end plate 1221.

[0062] In some embodiments, the first end plate 1211 and the cylindrical portion 1213 are separately disposed, and the outer peripheral wall of the first end plate 1211 is matched with the inner peripheral wall of the cylindrical portion 1213.

[0063] In one possible implementation, the wiring pin 150 is electrically connected to the circuit board assembly 140, the stator assembly 100 has a control cavity 180 and an interface cavity 161, the circuit board assembly 140 is located in the control cavity 180, at least a portion of the grounding pin 130 is located in the control cavity 180, a portion of the wiring pin 150 is located in the control cavity 180, and a portion of the wiring pin 150 is located in the interface cavity 161.

[0064] For ease of understanding, such as Figures 1 to 2 As shown, in the first embodiment, the connecting section 135 is located in the control cavity 180, the encapsulation part 160 is welded and fixed to the cover 170 to form the control cavity 180, the wiring pin 150 can be electrically connected to the wiring harness of the thermal management system, the connector of the wiring harness can be located in the interface cavity 161, and the interface of the wiring harness and the interface part forming the interface cavity 161 can be limited and matched, so that the stator assembly 100 and the integrated controller of the thermal management system can conduct electricity and communicate through the wiring harness, so that the integrated controller can control the operation of the stator assembly 100 and the electric valve 10.

[0065] In one possible implementation, the coil assembly 110 includes an insulating frame 112, a winding 111, and a winding pin 113. The winding 111 is wound around a winding bobbin of the insulating frame 112, and the winding 111 is also wound around and soldered to the winding pin 113. The winding pin 113 is electrically connected to a circuit board.

[0066] For ease of understanding, such as Figure 7 and Figure 8 As shown, in the first embodiment, the winding 111 is wound with enameled wire. The spiral section of the winding 111 and the winding cylinder of the insulating skeleton 112 are located in the coil cavity 123 of the claw pole housing 120. The winding pin 113 is limited and engaged with the insulating skeleton 112. The length direction of the conductive section of the winding pin 113 is parallel to the length direction of the connecting section 135.

[0067] In one possible implementation, there are at least two coil assemblies 110 and at least two claw pole housings 120. The at least two coil assemblies 110 and the at least two claw pole housings 120 are correspondingly arranged, the at least two coil assemblies 110 and the at least two claw pole housings 120 are coaxially arranged, and the at least two claw pole housings 120 are in a limiting engagement.

[0068] For ease of understanding, such as Figure 1 As shown, in the first embodiment, there are two coil assemblies 110 and two claw pole housings 120. One coil assembly 110 is generally provided with the coil cavity 123 of one claw pole housing 120, and the other coil assembly 110 is generally provided with the coil cavity 123 of the other claw pole housing 120. The two claw pole housings 120 are coaxially arranged, and the second end plates 1221 of the two claw pole housings 120 are arranged back to back and limit the fit.

[0069] The following is combined Figures 1 to 12 This application provides a detailed description of an electric valve 10 according to an embodiment. Such an electric valve 10 includes the aforementioned stator assembly 100 and a valve assembly 200.

[0070] In one possible implementation, at least a portion of the valve assembly 200 is located in the valve cavity 162. The valve assembly 200 includes a sleeve 240, a rotor assembly 210, and a valve port 220. The stator assembly 100 is disposed around the outer peripheral wall of the sleeve 240. A throttling orifice 230 is formed between the valve core 212 of the rotor assembly 210 and the valve port 220.

[0071] For ease of understanding, in the first embodiment, as Figure 1As shown, the rotor assembly 210 includes a magnetic rotor 211 and a valve core 212, which are coaxially arranged. When the stator assembly 100 drives the magnetic rotor 211 to rotate, the magnetic rotor 211 can drive the valve core 212 to sit on or move away from the valve port 220, thereby changing the flow area of ​​the throttling port 230. This allows the electric valve 10 to regulate the flow rate of the fluid, thus achieving the function of throttling and expanding the fluid. At least a portion of the magnetic rotor 211 is located within the sleeve 240, which is approximately located in the valve cavity 162. The sleeve 240 separates the rotor assembly 210 from the stator assembly 100, reducing the problem of fluid leakage from the rotor assembly 210 to the stator assembly 100.

[0072] like Figure 1 As shown, in the first embodiment, the valve cavity 162 is formed in the encapsulation portion 160. The inner sidewalls of the first claw pole 1212 and the second claw pole 1222 are located in the valve cavity 162 and can abut against the sleeve 240, so that the electromagnetic noise of the claw pole housing 120 can be discharged through the sleeve 240.

[0073] 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 a coil assembly (110), a claw electrode housing (120), and a grounding pin (130). At least a portion of the coil assembly (110) is located within the claw electrode housing (120). The claw electrode housing (120) includes a limiting plate (1214) which is stamped from the claw electrode housing (120). The limiting plate (1214) clamps the grounding pin (130), or the limiting plate (1214) and the claw electrode housing (120) clamp the grounding pin (130).

2. The stator assembly according to claim 1, characterized in that, The claw electrode housing (120) includes an opening, at least a portion of which is located on one axial or radial side of the coil assembly (110), and at least a portion of the limiting plate (1214) extends from the opening toward the outside of the claw electrode housing (120).

3. The stator assembly according to claim 2, characterized in that, The opening of the opening is located on the outer wall of the claw electrode housing (120), and the grounding pin (130) includes a bent section (131), at least a portion of the bent section (131) is bent toward the opening of the opening relative to the first outer side wall (1321) of the grounding pin (130), and at least a portion of the bent section (131) is located at the opening of the opening.

4. The stator assembly according to claim 3, characterized in that, The grounding pin (130) includes a first limiting segment (132) and a second limiting segment (133). The bent segment (131) is located between the first limiting segment (132) and the second limiting segment (133). The first limiting segment (132) abuts against the outer wall of the claw pole housing (120). The first limiting segment (132) is located on one side of the opening. The second limiting segment (133) abuts against the outer wall of the claw pole housing (120). The second limiting segment (133) is located on the other side of the opening.

5. The stator assembly according to any one of claims 2 to 4, characterized in that, The stator assembly (100) includes an encapsulation portion (160) which is injection molded with the coil assembly (110), the claw pole housing (120) and the grounding pin (130) as inserts. The opening extends from the outer wall of the claw pole housing (120) to the inner wall of the claw pole housing (120), and a portion of the encapsulation portion (160) is located at the opening of the opening.

6. The stator assembly according to any one of claims 1 to 5, characterized in that, The grounding pin (130) includes a recessed section (134) that abuts against the limiting plate (1214), and at least a portion of the recessed section (134) is recessed inward relative to the second outer sidewall (1322) of the grounding pin (130).

7. The stator assembly according to claim 6, characterized in that, The stator assembly (100) includes a circuit board assembly (140) electrically connected to the coil assembly (110), and the grounding pin (130) includes a connecting segment (135) electrically connected to the circuit board assembly (140), the connecting segment (135) being located on the side of the recessed segment (134) away from the claw pole housing (120).

8. The stator assembly according to any one of claims 1 to 7, characterized in that, The limiting plate (1214) includes a first bent portion (1214a), a second bent portion (1214b), and a third bent portion (1214c). The first bent portion (1214a), the second bent portion (1214b), and the third bent portion (1214c) clamp the grounding pin (130). The second bent portion (1214b) is located between the first bent portion (1214a) and the third bent portion (1214c). The third bent portion (1214c) bends relative to the second bent portion (1214b) toward the first bent portion (1214a).

9. The stator assembly according to any one of claims 1 to 8, characterized in that, The claw pole housing (120) includes a first end plate (1211) and a cylindrical portion (1213). The first end plate (1211) is coaxially arranged with the coil assembly (110). The first end plate (1211) and the coil assembly (110) are arranged along the axial direction of the stator assembly (100). The cylindrical portion (1213) is arranged around the outer peripheral wall of the coil assembly (110). The first end plate (1211) and the cylindrical portion (1213) are integrally arranged or the outer peripheral wall of the first end plate (1211) is limited and matched with the inner peripheral wall of the cylindrical portion (1213). The limiting plate (1214) is stamped from the first end plate (1211) or the cylindrical portion (1213).

10. An electric valve, characterized in that, The system includes a valve assembly (200) and a stator assembly (100). The valve assembly (200) includes a magnetic rotor (211), a valve core (212), and a valve port (220). The stator assembly (100) is disposed around the outer peripheral wall of the magnetic rotor (211). A throttling orifice (230) is formed between the valve core (212) and the valve port (220). The magnetic rotor (211) can drive the valve core (212) to move and adjust the flow area of ​​the throttling orifice (230). The stator assembly (100)... The device includes a coil assembly (110), a claw electrode housing (120), and a grounding pin (130). At least a portion of the coil assembly (110) is located within the claw electrode housing (120). The claw electrode housing (120) includes a limiting plate (1214) which is stamped from the claw electrode housing (120). The limiting plate (1214) clamps the grounding pin (130), or the limiting plate (1214) and the claw electrode housing (120) clamp the grounding pin (130).

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