Electric valve and manufacturing method thereof

Abstract

The invention relates to an electric valve and a manufacturing method thereof.The electric valve comprises a first coil assembly and a second coil assembly, the first coil assembly comprises a first coil, a first claw pole plate and a first framework, the second coil assembly comprises a second coil, a second claw pole plate and a second framework, and the first framework is formed by injection molding with the first claw pole plate as an insert; the second framework is formed by injection molding with the second claw pole plate as an insert, the injection molding structure and the injection molding process of a single framework are simplified, the first coil assembly and the second coil assembly are matched in a limiting mode, the phase number of the electric valve is at least two, and the structure of the electric valve and the manufacturing method of the electric valve are simplified.

Description

Technical Field

[0001] This invention relates to the field of thermal management technology, and more specifically to an electric valve and its manufacturing method. Background Technology

[0002] Electric valves have at least two phases and generally include a frame, at least two coils, and at least two pairs of claw plates. The frame is injection molded with at least two pairs of claw plates as inserts, which makes the injection molding structure and injection molding process of the frame complex, and consequently makes the structure and manufacturing process of the electric valve too complex. Summary of the Invention

[0003] Therefore, it is necessary to provide an electric valve and its manufacturing method to address the above problems, which will help simplify the structure and manufacturing method of the electric valve.

[0004] The technical solution adopted in the embodiments of the present invention is as follows:

[0005] On one hand, the present invention provides an electric valve, including a first coil assembly and a second coil assembly, wherein the axial direction of the first coil assembly and the axial direction of the second coil assembly are aligned. The first coil assembly includes a first coil, a first claw electrode plate, and a first frame. The second coil assembly includes a second coil, a second claw electrode plate, and a second frame. The first coil is wound around the first frame, and the second coil is wound around the second frame. The first frame is injection molded with the first claw electrode plate as an insert, and the second frame is injection molded with the second claw electrode plate as an insert. The first claw electrode plate and the second claw electrode plate are separate structures, and the first frame and the second frame are separate structures. The first coil assembly and the second coil assembly are mutually restrictive and fitted.

[0006] In the electric valve provided by the present invention, the first frame is injection molded with the first claw plate as an insert, and the second frame is injection molded with the second claw plate as an insert, which simplifies the injection molding structure of a single frame. The first coil assembly and the second coil assembly are matched in a limiting manner, so that the electric valve has at least two phases, which helps to simplify the structure of the electric valve.

[0007] On the other hand, the present invention provides a method for manufacturing an electric valve, wherein a first frame is formed by injection molding with a first claw plate as an insert, and a first coil is wound around the first frame; a second frame is formed by injection molding with a second claw plate as an insert, and a second coil is wound around the second frame; and a first coil assembly and a second coil assembly are mutually limiting and cooperating.

[0008] In the manufacturing method of the electric valve provided by the present invention, a first frame is formed by injection molding with a first claw plate as an insert, and a second frame is formed by injection molding with a second claw plate as an insert. This simplifies the injection molding structure of a single frame. The first coil assembly and the second coil assembly are matched in a limiting manner, so that the electric valve has at least two phases, which in turn helps to simplify the manufacturing method of the electric valve. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the stator assembly in an electric valve provided in an embodiment of the present invention;

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

[0011] Figure 3 for Figure 1 Schematic diagram of the middle stator assembly after its housing is concealed.

[0012] Figure 4 for Figure 3 A schematic diagram of the outer shell structure;

[0013] Figure 5 for Figure 3 A schematic diagram of the structure hidden behind the outer shell, which consists of a first coil assembly and a second coil assembly;

[0014] Figure 6 for Figure 5 Schematic diagram of the exploded structure of the medium-sized structure;

[0015] Figure 7 for Figure 6 A schematic diagram of the structure of a pair of first claw plates in the first coil assembly and a pair of second claw plates in the second coil assembly;

[0016] Figure 8 for Figure 7 A cross-sectional schematic diagram of the first claw plate of the structure.

[0017] Figure 9 for Figure 6 A schematic diagram of the structure of the first frame in the first coil assembly and the second frame in the second coil assembly;

[0018] Figure 10 For use in preparation Figure 1 A partial flowchart illustrating the manufacturing process of an electric valve.

[0019] Figure 11 for Figure 8 A magnified view of the structure at point "A" in the middle;

[0020] In the diagram: 100-Stator assembly, P1-First coil assembly, P2-Second coil assembly, 110-First coil, 120-Second coil, 130-First claw pole plate, 140-Second claw pole plate, 150-First frame, 160-Second frame, 170-Housing shell, 181-First pin, 182-Second pin, 183-Housing shell, 131-First substrate, 132-First tooth pole, 141-Second substrate, 142-Second tooth pole, 1311-First injection hole, 1312-Injection cavity, 131 3-Second injection hole, 1314-Large hole section, 1315-Small hole section, 1316-Protrusion, 1317-First plane, 1318-First arc surface, 1411-Limiting hole, 1412-Second plane, 1413-Second arc surface, 151-First small diameter section, 152-First large diameter section, 153-First edge-shaped part, 154-First terminal part, 155-First defect part, 161-Second edge-shaped part, 162-Second terminal part, 163-Second defect part, 171-Accommodation part, 172-Notch. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0022] In related technologies, electric valves have at least two phases and generally include a frame, at least two coils, and at least two pairs of claw plates. The frame is injection molded with at least two pairs of claw plates as inserts, which makes the injection molding process and injection structure of the frame complex, thus making the structure and manufacturing process of the electric valve too complex.

[0023] Based on the above-mentioned technical problems, in one aspect, embodiments of the present invention provide an electric valve, including a stator assembly 100. The stator assembly 100 includes a first coil assembly P1 and a second coil assembly P2. The first coil assembly P1 includes a first coil 110, a first claw pole plate 130, and a first frame 150. The second coil assembly P2 includes a second coil 120, a second claw pole plate 140, and a second frame 160. The first coil 110 is wound around the first frame 150, and the second coil 120 is wound around the second frame 160. The first frame 150 is injection molded with the first claw pole plate 130 as an insert, and the second frame 160 is injection molded with the second claw pole plate 140 as an insert. The first claw pole plate 130 and the second claw pole plate 140 are separate structures, and the first frame 150 and the second frame 160 are separate structures. The first coil assembly P1 and the second coil assembly P2 are mutually limiting and cooperating.

[0024] In this electric valve, the first frame 150 is injection molded with the first claw plate 130 as an insert, and the second frame 160 is injection molded with the second claw plate 140 as an insert, which simplifies the injection molding structure of a single frame. The first coil assembly P1 and the second coil assembly P2 are matched in a limiting manner, so that the electric valve has at least two phases, which helps to simplify the structure of the electric valve.

[0025] On the other hand, embodiments of the present invention also provide a method for manufacturing an electric valve, comprising: injection molding a first frame 150 with a first claw plate 130 as an insert, and winding a first coil 110 around the first frame 150; injection molding a second frame 160 with a second claw plate 140 as an insert, and winding a second coil 120 around the second frame 150; and limiting the engagement of a first coil assembly P1 and a second coil assembly P2.

[0026] In the manufacturing method of this electric valve, the first frame 150 is formed by injection molding with the first claw plate 130 as an insert, and the second frame 160 is formed by injection molding with the second claw plate 140 as an insert. This simplifies the injection molding structure of a single frame. The first coil assembly P1 and the second coil assembly P2 are matched in a limiting manner, so that the electric valve has at least two phases, which in turn helps to simplify the manufacturing method of the electric valve.

[0027] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, and not all of them. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present application.

[0028] The following is combined Figures 1 to 11This invention provides a detailed description of an electric valve, which includes a stator assembly 100. The stator assembly 100 includes at least two coil assemblies arranged axially along the stator assembly 100. Each coil assembly includes a coil, a claw plate, a frame, and a pin. The at least two coil assemblies are defined as a first coil assembly P1 and a coil assembly P2. The first coil assembly P1 includes a first coil 110, a first claw plate 130, a first frame 150, and a first pin. The second coil assembly P2 includes a second coil 120, a second claw plate 140, a second frame 160, and a second pin. The axial direction of the first coil assembly P1, the axial direction of the second coil assembly P2, and the axial direction of the stator assembly 100 are aligned.

[0029] In one possible implementation, the first coil 110 is wound around the first frame 150, the first frame 150 is injection molded with the first claw plate 130 as an insert, the second frame 140 is injection molded with the second claw plate 140 as an insert, the first claw plate 130 and the second claw plate 140 are separate structures, the first frame 150 and the second frame 160 are separate structures, and the first coil assembly P1 and the second coil assembly P2 are mutually limiting and cooperating.

[0030] In one possible implementation, there is a pair of first claw plates 130 and a pair of second claw plates 140. The first coil 110 is located away from the pair of first claw plates 130 relative to the first frame 150, and the second coil 120 is located away from the pair of second claw plates 140 relative to the second frame 160. Along the axial direction of the stator assembly 110, at least a portion of the first coil 110 is located on one side of the second coil 120. The first frame 150 is injection molded with the pair of first claw plates 130 as inserts, and the second frame 160 is injection molded with the pair of second claw plates 140 as inserts. The first claw plates 130 and the second claw plates 140 are separate structures, and the first frame 150 and the second frame 160 are separate structures. At least two of the first frame 150, the second frame 160, the first claw plates 130, and the second claw plates 140 are mutually limiting and engaged.

[0031] For ease of understanding, such as Figure 2As shown, the electric valve provided in this embodiment has two phases, that is, the stator assembly 100 has two phases. The Y-axis of the coordinate axis is basically consistent with the axial direction of the stator assembly 100, and the X-axis of the coordinate axis is basically consistent with one radial direction of the stator assembly 100. There are two coil assemblies, and two coils, namely the first coil 110 and the second coil 120. Along the axial direction of the stator assembly 100, the first coil 110 is approximately located on one side of the second coil 120. The axial directions of the first coil 110, the second coil 120, and the stator assembly 100 are basically consistent with the axial direction of the stator assembly 100. There are two pairs of claw pole plates. There is one pair of first claw pole plates 130 and one pair of second claw pole plates 140. The pair of first claw pole plates 130 corresponds to the first coil 110, and the pair of second claw pole plates 140 corresponds to the second coil 120. The pair of first claw pole plates 130 are staggered, with the first coil 110 located approximately between the pair of first claw pole plates 130. The pair of second claw pole plates 140 are staggered, with the second coil 120 located approximately between the pair of second claw pole plates 140. Along the axial direction of the stator assembly 100, the pair of first claw pole plates 130 is approximately located on one side of the other pair of second claw pole plates 140. There are two frames: a first frame 150 and a second frame 160. A first coil 110 is wound around the first frame 150, and a second coil 120 is wound around the second frame 160. The first frame 150 corresponds to a pair of first claw plates 130, and the second frame 160 corresponds to a pair of second claw plates 140. The first coil 110 is located away from the pair of first claw plates 130 relative to the first frame 150, and the second coil 120 is located away from the pair of second claw plates 140 relative to the second frame 160. Along the axial direction of the stator assembly 100, the first frame 150 is also approximately located to one side of the second frame 160. The first frame 150 is injection molded with the pair of first claw plates 130 as inserts, and the second frame 160 is injection molded with the pair of second claw plates 140. The first frame 150 and the second frame 160 are separate structures, and they are injection molded separately. By increasing the number of frames, the injection molding structure of a single frame is simplified, which helps to simplify the product cost of the electric valve and also helps to reduce the product cost of the electric valve.

[0032] like Figures 5 to 8As shown, the four claw pole plates are separate structures, as are the first frame 150 and the second frame 160. At least one of the first claw pole plate 130 and the first frame 150 engages with at least one of the second claw pole plate 140 and the second frame 160. The first coil 110, the first frame 150, and the pair of first claw pole plates 130 can be considered as separate units and can be manufactured individually. Similarly, the second coil 120, the second frame 160, and the pair of second claw pole plates 140 can also be considered as separate units and can be manufactured individually. By engaging the two units, a stator assembly 100 with two phases can be obtained, further simplifying the structure of the electric valve and reducing its product cost. Furthermore, the entire assembly of the first coil 110, the first frame 150, and the pair of first claw pole plates 130, along with the entire assembly of the second coil 120, the second frame 160, and the pair of second claw pole plates 140, can be manufactured as standard parts. This allows for the production of stator assemblies 100 with not only two phases but also three-phase, four-phase, and other multi-phase stator assemblies 100, thus expanding the product's applicability. Moreover, this limiting fit structure allows for adjustment of the mating positions of the entire assembly of the first coil 110, the first frame 150, and the pair of first claw pole plates 130 with the entire assembly of the second coil 120, the second frame 160, and the pair of second claw pole plates 140. This improves the yield rate of electric valve manufacturing, reduces the scrap rate of electric valve manufacturing, and further enhances structural strength.

[0033] In one possible implementation, the first claw plate 130 includes a first substrate 131, and the second claw plate 140 includes a second substrate 141. Along the axial direction of the stator assembly 110, at least a portion of the first substrate 131 is located on one side of the second substrate 141, and the end wall of the first substrate 131 and the end wall of the second substrate 141 abut against each other.

[0034] For ease of understanding, such as Figures 5 to 8 As shown, a first claw plate 130 and a second claw plate 140 are arranged adjacent to each other. The first claw plate 130 includes a first substrate 131, and the second claw plate 140 includes a second substrate 141. Along the axial direction of the stator assembly 100, a pair of first substrates 131 and a pair of second substrates 141 are arranged sequentially. The first substrate 131 is generally annular, and the second substrate 141 is also generally annular. The first substrate 131 and the second substrate 141 are substantially coaxial. The lower end wall of a first substrate 131 and the upper end wall of a second substrate 141 abut against each other, thereby limiting the first substrate 131 and the second substrate 141 together along the axial direction of the stator assembly 100, which further improves the structural strength of the electric valve and is also conducive to the miniaturization of the electric valve.

[0035] In one possible implementation, the first substrate 131 has a first injection hole 1311, and the second substrate 141 has a limiting hole 1411. Along the axial direction of the stator assembly 110, at least a portion of the first injection hole 1311 is located on one side of the limiting hole 1411; a portion of the first skeleton 150 is injection molded into the first injection hole 1311, and a portion of the first skeleton 150 is limited and fitted in the limiting hole 1411.

[0036] For ease of understanding, such as Figure 7 As shown, along the axial direction of the stator assembly 100, the first injection hole 1311 and the limiting hole 1312 are arranged in sequence; part of the first skeleton 150 is injection molded into the first injection hole 1311, and part of the first skeleton 150 is limited and fitted in the limiting hole 1312. The adjacent first claw plate 130 and second claw plate 140 are subject to multiple limiting by the first skeleton 150, which further improves the structural strength of the electric valve.

[0037] Furthermore, the first injection hole 1311 is a through hole, and the limiting hole 1312 is a through hole or a blind hole. The axial direction of the first injection hole 1311, the axial direction of the limiting hole 1312, and the axial direction of the stator assembly 100 are consistent. This facilitates the injection molding of part of the first skeleton 150 into the first injection hole 1311 and also facilitates the insertion of the first skeleton 150 into the limiting hole 1312.

[0038] In one possible implementation, the inner diameter of the first injection hole 1311 is smaller than the inner diameter of the limiting hole 1312. The first skeleton 150 includes a small diameter segment 151 and a large diameter segment 152. The outer diameter of the small diameter segment 151 is smaller than the outer diameter of the large diameter segment 152. The small diameter segment 151 is close to the large diameter segment 152 near the first coil 110. At least a portion of the small diameter segment 151 is injection molded into the first injection hole 1311. At least a portion of the large diameter segment 152 is limited and fitted in the limiting hole 1312. Along the axial direction of the stator assembly 100, at least a portion of the large diameter segment 152 is located on one side of the first substrate 131. The large diameter segment 152 and the claw plate abut against each other.

[0039] For ease of understanding, such as Figure 9 As shown, the connected small-diameter section 151 and large-diameter section 152 are roughly in the shape of a stepped shaft, and the small-diameter section 151 and large-diameter section 152 are arranged along the axial direction of the stator assembly 100; the small-diameter section 151 of the first frame 150 is basically injection molded into the first injection hole 1311, and the large-diameter section 152 of the first frame 150 is basically limited and fitted in the limiting hole 1312. The large-diameter section 152 is located on one side of the axial direction of the first claw plate 130, and the large-diameter section 152 of the first frame 150 abuts against the lower end wall of the first claw plate 130. By adopting the above structure, the structural strength of the electric valve can be further improved.

[0040] In one possible implementation, the claw plate includes toothed poles extending from the substrate along the axial direction of the stator assembly 100; along the radial direction of the stator assembly 100, the toothed poles are located inside the coil, and at least two claw plates have partially overlapping toothed poles; along the axial direction of the stator assembly 100, at least two claw plates have partially overlapping toothed poles.

[0041] For ease of understanding, such as Figure 7 and Figure 8 As shown, the first claw electrode plate 130 includes a first tooth 132 extending from the first substrate 131 along the axial direction of the stator assembly 100, and the second claw electrode plate 140 includes a second tooth 142 extending from the second substrate 141 along the axial direction of the stator assembly 100. Along the radial direction of the stator assembly 100, the first teeth 132 of one first claw electrode plate 130 and the first teeth 132 of another first claw electrode plate 130 are partially overlapped; along the axial direction of the stator assembly 100, the first teeth 132 of one first claw electrode plate 130 and the first teeth 132 of another first claw electrode plate 130 are also partially overlapped; this staggered arrangement of the first teeth 132 of the two first claw electrode plates 130 improves the structural compactness of the two first claw electrode plates 130. Along the radial direction of the stator assembly 100, the first tooth 132 of the first claw plate 130 and the second tooth 142 of the second claw plate 140 are partially overlapped; along the axial direction of the stator assembly 100, the first tooth 132 of the first claw plate 130 is partially disposed on one side of the second tooth 142 of the second claw plate 140, and the first substrate 131 of the adjacent first claw plate 130 and the second substrate 141 of the second claw plate 140 are mutually limiting and engaged, which also improves the structural compactness of the first claw plate 130 and the second claw plate 140.

[0042] A pair of first claw plates 130 and a housing 170 form a hollow region, in which the first coil 110 is located. Both the claw plates and the housing 170 are made of soft magnetic material. When the first coil 110 is energized, the first claw plates 130 and the housing 170 can concentrate the magnetic field generated by the first coil 110 into a closed magnetic circuit, which is beneficial to improving the performance of the electric valve.

[0043] In one possible implementation, the first claw electrode plate 131 has an injection cavity 1312, a portion of the first skeleton 150 is injection molded in the injection cavity 1312, a portion of the injection cavity 1312 is disposed on the first substrate 131, and the remaining portion of the injection cavity 1312 is disposed between adjacent first tooth electrodes 132.

[0044] For ease of understanding, such as Figure 7 and Figure 9As shown, there are at least two first toothed poles 132, which are located close to the inner side of the first substrate 131. The at least two first toothed poles 132 are arranged in a circular pattern, and an injection cavity 1312 is provided between adjacent first toothed poles 132. The injection cavity 1312 is also formed on the first substrate 131, located close to the inner side of the first substrate 1312. A portion of the first skeleton 150 is injection molded in the injection cavity 1312. The portion of the first skeleton 150 located in the injection cavity 1312 is approximately serrated, which improves the structural strength of the first skeleton 150 and the first claw pole plate 130.

[0045] In one possible implementation, the first substrate 131 has a second injection hole 1313, a portion of the first skeleton 150 is injection molded into the second injection hole 1313, the second injection hole 1313 is close to the outer side of the first substrate 131 relative to the injection cavity 1312, the second injection hole 1313 has a large hole section 1314 and a small hole section 1315, the large hole section 1314 is away from the first coil 110 relative to the small hole section 1315.

[0046] For ease of understanding, such as Figure 8 As shown, the second injection hole 1313 is approximately conical. The large hole section 1314 refers to the end of the second injection hole 1313 with a larger diameter, and the small hole section 1315 refers to the end of the second injection hole 1313 with a smaller diameter. The large hole section 1314 of the first substrate 131 is farther away from the first coil 110 than the small hole section 1315 of the first substrate 131. A portion of the first skeleton 150 is injection molded into the second injection hole 1313 of the first substrate 131. A portion of the first skeleton 150 can serve as an insert for the first claw electrode plate 130, allowing the first skeleton 150 and the first claw electrode plate 130 to fit together, further improving the structural strength of the first skeleton 150 and the first claw electrode plate 130.

[0047] In one possible implementation, at least two claw plates are stamped together, and the at least two claw plates have the same shape.

[0048] For ease of understanding, such as Figure 7 As shown, the shape of the first claw electrode plate 130 is the same as that of the second claw electrode plate 140. The first claw electrode plate 130 and the second claw electrode plate 140 can be obtained by stamping with a set of stamping dies, which can reduce the investment cost of production equipment.

[0049] Furthermore, at least two skeletons have the same shape, with the first skeleton 150 and the second skeleton 160 having the same shape. The first skeleton 150 and the second skeleton 160 can be obtained by injection molding using a single injection mold, which can also reduce the investment cost of production equipment.

[0050] In one possible implementation, the stator assembly 100 includes a housing 170, with coils located inside the housing 170 along the radial direction of the stator assembly 100, and at least a portion of the skeleton located inside the housing 170; the housing 170 and at least two claw plates are engaged.

[0051] For ease of understanding, the housing 170 is generally cylindrical in shape. Along the radial direction of the stator assembly 100, the first coil 110 is located inside the housing 170, the second coil 120 is located inside the housing 170, a large portion of the first frame 150 is located inside the housing 170, and a large portion of the second frame 160 is located inside the housing 170. Along the axial direction of the stator assembly 100, the first coil 110 overlaps with a portion of the housing 170, the second coil 120 overlaps with a portion of the housing 170, the first frame 150 overlaps with a portion of the housing 170, and the second frame 160 overlaps with a portion of the housing 170. This arrangement ensures that the first coil 110 and the second coil 120 are located within the housing 170, and a large portion of the first frame 150 and the large portion of the second frame 160 are located within the housing 170, thereby improving the structural compactness of the two coils, the two frames, and the housing 170. The outer casing 170 is engaged with a pair of first claw plates 130 and a pair of second claw plates 140 for limiting their movement. The outer casing 170 limits the movement of the first claw plates 130 and the second claw plates 140, ensuring that the four claw plates are essentially coaxial, thus further improving the structural strength of the electric valve. Furthermore, the abutting engagement between the outer casing 170 and the pair of first claw plates 130 allows the magnetic field generated by the first coil 110 to be focused into a closed magnetic circuit through the pair of first claw plates 130 and the outer casing 170. Similarly, the abutting engagement between the outer casing 170 and the pair of second claw plates 140 allows the magnetic field generated by the second coil 120 to be focused into a closed magnetic circuit through the pair of second claw plates 140 and the outer casing 170, thereby improving the working performance of the electric valve.

[0052] In one possible implementation, the claw plate includes protrusions 1316, at least two of which are located along the axial or radial direction of the stator assembly 100, with at least a portion of one protrusion 1316 located on one side of the other protrusion 1316; the at least two protrusions 1316 are engaged in a limiting fit.

[0053] For ease of understanding, such as Figures 3 to 7As shown, there are eight protrusions 1316, with each claw electrode plate including two protrusions 1316. Four of the eight protrusions 1316 are arranged approximately along the axial direction of the stator assembly 100, and the other four are also arranged approximately along the axial direction of the stator assembly 100. The two rows of protrusions 1316 arranged along the axial direction of the stator assembly 100 are basically parallel. The two protrusions 1316 of each claw electrode plate are also arranged radially along the stator assembly 100, and the two protrusions 1316 of the four claw electrode plates are arranged in basically parallel directions. The eight protrusions 1316 limit and cooperate with the housing 170, thus further improving the structural strength of the electric valve.

[0054] In one possible implementation, the housing 170 includes a receiving portion 171, at least a portion of the protrusions 1316 are located in the cavity of the receiving portion 171, and there are at least two receiving portions 171, with at least two protrusions 1316 and at least two receiving portions 171 corresponding in position.

[0055] For ease of understanding, such as Figure 4 As shown, there are six receiving portions 171, and eight protrusions 1316 are respectively disposed in the cavities of the six receiving portions 171. Among them, a pair of protrusions 1316 of a first claw plate 130 and a pair of protrusions 1316 of a second claw plate 140 are disposed in the same cavity of the same pair of receiving portions 171, which further improves the structural strength of the electric valve.

[0056] In one possible implementation, there are at least two pins, which are divided into a first pin 181 and a second pin 182.

[0057] In one possible implementation, the first coil 110 is electrically connected to the first pin 181, and the second coil 120 is electrically connected to the second pin 182. The outer wall of the first claw plate 130 includes a first plane 1317 and a first arc surface 1318. The first plane 1317 is located on the outer side of the first claw plate 130 near the first pin 181, and the first plane 1317 is closer to the first coil 110 relative to the first arc surface 1318. The outer wall of the second claw plate 140 includes a second plane 1412 and a second arc surface 1413. The second plane 1412 is located on the outer side of the second claw plate 140 near the second pin 182, and the second plane 1412 is closer to the second coil 120 relative to the second arc surface 1413.

[0058] For ease of understanding, such as Figure 3 , Figure 5 and Figure 6As shown, there are four pins: two first pins 181 and two second pins 182. These four pins can electrically connect to a circuit board assembly or wiring harness. The circuit board assembly or wiring harness can control the first coil 110 and the second coil 120 through these four pins, thereby controlling the magnetic field changes of the first coil 110 and the second coil 120. A first plane 1317 and a first arc surface are disposed on the outer wall of the first substrate. The first plane 1317 is closer to the first pins relative to the first arc surface, and also closer to the first coil 110 relative to the first arc surface, allowing the first pins and the first coil 110 to be closer together, which helps to reduce the size of the stator assembly. A second plane 1412 and a second arc surface 1413 are disposed on the outer wall of the second substrate. The second plane 1412 is closer to the second pins 182 relative to the second arc surface 1413, and also closer to the second coil 120 relative to the second arc surface 1413, allowing the second pins 182 and the second coil 120 to be closer together, which helps to reduce the size of the electric valve.

[0059] In one possible implementation, the first frame 150 includes a first flange 153, at least a portion of which is located on a first plane 1317. A first terminal portion 154 and a first defect portion are provided on the side of the first flange 153 away from the first plane 1317. The first terminal portion 154 is injection molded or fitted with a first pin as an insert. The second frame includes a second flange 161, at least a portion of which is located on a second plane 1412. A second terminal portion 163 and a second defect portion 163 are provided on the side of the second flange 161 away from the second plane 1412. The second terminal portion 163 is injection molded or fitted with a second pin 182 as an insert. A portion of the first terminal portion 154 is located in the second defect cavity of the second defect portion 163, and a portion of the second terminal portion 163 is located in the first defect cavity of the first defect portion.

[0060] For ease of understanding, such as Figure 3 , Figure 5 , Figure 6 and Figure 9As shown, the first edge-shaped portion 153 is located outside the first plane 1317. There are two first terminal portions 154 and two first defect portions 155. The two first terminal portions 154 and the two first defect portions 155 are located on the side of the first edge-shaped portion 153 away from the first plane 1317. Two first pins 181 are respectively inserted into the two first terminal portions 154. The second edge-shaped portion 161 is located outside the second plane 1412. There are two second terminal portions 163 and two second defect portions 163. The two first terminal portions 154 and the two second defect portions 163 are located on the side of the second edge-shaped portion 161 away from the second plane 1412. Two first terminal portions 154 and two second terminal portions 163 are arranged in a row, and the arrangement direction of the two first terminal portions 154 and the two second terminal portions 163 is perpendicular to the axial direction of the stator assembly 100. Along the radial direction of the stator assembly 100, the two first terminal portions 154 and the two second terminal portions 163 are located approximately outside the housing 170, which helps to reduce the size of the electric valve.

[0061] In one possible implementation, there are at least two first terminal portions 154 and at least two first defect portions 155, with the at least two first terminal portions 154 and at least two first defect portions 155 being staggered, and the arrangement direction of the at least two first terminal portions 154 and at least two first defect portions 155 being perpendicular to the axial direction of the stator assembly 100; there are at least two second terminal portions 163 and at least two second defect portions 163, with the at least two second terminal portions 163 and at least two second defect portions 163 being staggered, and the arrangement direction of the at least two second terminal portions 163 and at least two second defect portions 163 being perpendicular to the axial direction of the stator assembly 100.

[0062] For ease of understanding, as shown in the figure, the two first terminal portions 154 and the two first defect portions 155 are arranged symmetrically about the stator assembly 100; the two second terminal portions 163 and the two second defect portions 163 are arranged symmetrically about the stator assembly 100.

[0063] Furthermore, the housing 170 has a notch 172 through which the first terminal portion 154 and the second terminal portion 163 pass, so that the first terminal portion 154 and the second terminal portion 163 are located on the outside of the housing 170.

[0064] In one possible implementation, the portion of the pin is located on the outside of the housing 170 along the radial direction of the stator assembly 100.

[0065] In one possible implementation, a portion of the pins are aligned with the radial direction of the stator assembly 100, while the remaining pins are aligned with the axial direction of the stator assembly 100, with some pins located in the interface cavity of the housing 183.

[0066] For ease of understanding, such as Figure 3 and Figure 5 As shown, a portion of the first pin 181 extends radially along the stator assembly 100, and the remaining portion of the first pin 181 extends axially along the stator assembly 100. The axially extending portion of the first pin 181 is generally located in the interface cavity of the housing 183, so that the interface cavity can extend axially along the stator assembly 100, further improving the compactness of the electric valve structure.

[0067] The electric valve also includes valve components, with a stator assembly 100 positioned and fitted within the valve components. The valve components include: a magnetic rotor assembly, a valve core assembly, and a valve body.

[0068] In one possible implementation, the magnetic rotor assembly is rotatably fitted to the valve body, the valve core assembly is slidably fitted to the valve body, the magnetic rotor assembly is limit-fitted to the valve core assembly, the valve body is limit-fitted to the stator assembly 100, and at least a portion of the magnetic rotor assembly is located within the stator assembly 100.

[0069] This embodiment also provides a method for manufacturing an electric valve, which is used to manufacture the electric valve described above. The method includes: injection molding a first skeleton 150 with a first claw plate 130 as an insert, and winding a first coil 110 around the first skeleton 150; injection molding a second skeleton 160 with a second claw plate 140 as an insert, and winding a second coil 120 around the second skeleton 150; and limiting the engagement of a first coil assembly P1 and a second coil assembly P2.

[0070] In one possible implementation, the method includes: the first claw electrode plate 130 includes a first substrate 131, the second claw electrode plate 140 includes a second substrate 141, and the end wall of the first substrate 131 and the end wall of the second substrate 141 abut against each other.

[0071] In one possible implementation, at least two of the first frame 150, the second frame, the first claw electrode plate, and the second claw electrode plate are engaged in a limiting cooperation.

[0072] In one possible implementation, the first substrate 131 has a first injection hole 1311, the second substrate 141 has a limiting hole 1411, a portion of the first skeleton 150 is injection molded into the first injection hole 1311, and a portion of the first skeleton 150 is limited and fitted in the limiting hole 1411.

[0073] In one possible implementation, the housing 183 is injection molded with claw plates, coils, and a frame as inserts. For example... Figure 1 and Figure 2 As shown, the first claw plate, the second claw plate, the first coil, the second coil, the first frame, and the second frame are basically located inside the housing.

[0074] For ease of understanding, such as Figure 10 As shown, the manufacturing method of this electric valve is described in detail below, including:

[0075] S100: The first frame 150 is injection molded with a pair of first claw plates 130 and a pair of first pins 181 as inserts, and the first coil 110 is wound around the first frame 150 and the pair of first pins 181 to obtain the first coil assembly; the second frame 160 is injection molded with a pair of second claw plates 140 and a pair of second pins 182 as inserts, and the second coil 120 is wound around the second frame 160 and the pair of second pins 182 to obtain the first coil assembly;

[0076] S200: The first claw plate 130 and the second claw plate 140 are mutually limiting and engaged; the first frame 150 is mutually limiting and engaged with the second claw plate 140; and the second frame 160 is mutually limiting and engaged with the first claw plate 130.

[0077] S300: The outer casing 170 limits the engagement of the first claw electrode plate 130 and the second claw electrode plate 140;

[0078] S400: The first pin 181 and the second pin 182 are bent so that the length direction of part of the first pin 181 is consistent with the axial direction of the stator assembly 100, and the length direction of part of the second pin 182 is consistent with the axial direction of the stator assembly 100.

[0079] S500: The housing 183 is injection molded with the first claw pole plate 130, the second claw pole plate 140, the first frame 150, the second frame 160, the first pin 181, and the second pin 182 as inserts to obtain the stator assembly 100.

[0080] S600: The stator assembly 100 and the valve component are matched to limit the movement, thereby manufacturing the electric valve described above.

[0081] Specifically, S100 includes:

[0082] The small-diameter section 151 of the first skeleton 150 is injection molded into the first injection hole 1311 of the second claw electrode plate 140;

[0083] The small-diameter section 151 of the second skeleton 160 is injection molded into the limiting hole 1312 of the first claw plate 130;

[0084] Part of the first skeleton 150 is injection molded into the second injection hole 1313;

[0085] Part of the second skeleton 160 is injection molded into the second injection hole 1313.

[0086] Specifically, S200 includes:

[0087] The large-diameter section 152 of the first frame 150 is limited and fitted into the limiting hole 1312 of the second claw plate 140, and the large-diameter section 152 of the second frame 160 is limited and fitted into the limiting hole 1312 of the first claw plate 130.

[0088] In S300, the protrusion 1316 of the first claw plate 130 and the protrusion 1316 of the second claw plate 140 are positioned and fitted in the cavity of the receiving portion 171 of the housing 170, so that the housing 170 and the first claw plate 130 and the second claw plate 140 fit together better.

[0089] In addition, the S300 also specifically includes:

[0090] The length direction of the first pin 181 and the length direction of the second pin 182 are consistent with the radial direction of the stator assembly 100. The first pin 181 and the second pin 182 pass through the notch 172. The outer shell 170 is formed by winding around the first claw plate 130 and the second claw plate 140. The two ends of the outer shell are limited and matched.

[0091] The limiting and fitting methods at both ends of the aforementioned outer shell include, but are not limited to, at least one of welding, mortise and tenon joint, snap-fit, and screw connection.

[0092] Those skilled in the art should understand that the technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments have been described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0093] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electric valve, comprising a first coil assembly (P1) and a second coil assembly (P2), wherein the first coil assembly (P1) and the second coil assembly (P2) are axially aligned, the first coil assembly (P1) comprising a first coil (110), a first claw electrode plate (130) and a first frame (150), the second coil assembly (P2) comprising a second coil (120), a second claw electrode plate (140) and a second frame (160), wherein the first coil (110) is wound around the first frame (150). The second coil (120) is wound around the second frame (160). The first frame (150) is injection molded with the first claw pole plate (130) as an insert. The second frame (160) is injection molded with the second claw pole plate (140) as an insert. The first claw pole plate (130) and the second claw pole plate (140) are separate structures. The first frame (150) and the second frame (160) are separate structures. The first coil assembly (P1) and the second coil assembly (P2) are in a limiting fit.

2. The electric valve according to claim 1, characterized in that, The first claw electrode plate (130) includes a first substrate (131), and the second claw electrode plate (140) includes a second substrate (141). Along the axial direction of the first coil assembly (P1), at least a portion of the first substrate (131) is located on one side of the second substrate (141), and the end wall of the first substrate (131) and the end wall of the second substrate (141) abut against each other.

3. The electric valve according to claim 2, characterized in that, The first substrate (131) has a first injection hole (1311), and the second substrate (141) has a limiting hole (1411). Along the axial direction of the first coil assembly (P1), at least a portion of the first injection hole (1311) is located on one side of the limiting hole (1411); a portion of the first skeleton (150) is injection molded in the first injection hole (1311), and a portion of the first skeleton (150) is limited and fitted in the limiting hole (1411).

4. The electric valve according to claim 3, characterized in that, The first claw electrode plate (130) has an injection cavity (1312), a portion of the first skeleton (150) is injection molded in the injection cavity (1312), a portion of the injection cavity (1312) is formed on the first substrate (131), the first claw electrode plate (130) includes a first tooth (132), the first tooth (132) extends from the first substrate (131) along the axial direction of the first coil assembly (P1), there are at least two first teeth (132), and a portion of the injection cavity (1312) is formed between the sidewalls of adjacent first teeth (132).

5. The electric valve according to claim 4, characterized in that, The first substrate (131) has a second injection hole (1313), a portion of the first skeleton (150) is injection molded in the second injection hole (1313), the second injection hole (1313) is close to the outer side of the first substrate (131) relative to the injection cavity (1312), the second injection hole (1313) has a large hole section (1314) and a small hole section (1315), the large hole section (1314) is away from the first coil (110) relative to the small hole section (1315).

6. The electric valve according to any one of claims 1 to 5, characterized in that, The first coil assembly (P1) includes a first pin (181), and the second coil assembly (P2) includes a second pin (182). The first coil (110) is electrically connected to the first pin (181), and the second coil (120) is electrically connected to the second pin (182). The outer wall of the first claw plate (130) includes a first plane (1317) and a first arc surface (1318). The first plane (1317) is located on the first claw plate (130) near the first pin. On the outside of the needle (181), the first plane (1317) is close to the first coil (110) relative to the first arc surface (1318); the outer wall of the second claw plate (140) includes a second plane (1412) and a second arc surface (1413), the second plane (1412) is located on the outside of the second claw plate (140) near the second insertion needle (182), and the second plane (1412) is close to the second coil (120) relative to the second arc surface (1413).

7. The electric valve according to claim 6, characterized in that, The first frame (150) includes a first flange-like portion (153), at least a portion of which is located on the first plane (1317). A first terminal portion (154) and a first defect portion (155) are provided on the side of the first flange-like portion (153) away from the first plane (1317). The first terminal portion (154) is injection molded or fitted onto the first pin (181) as an insert. The second frame (160) includes a second flange-like portion (161), at least a portion of which is located on the first plane (1317). The second terminal (161) is located on the second plane (1412). The second blade-shaped portion (161) is provided with a second terminal portion (162) and a second defect portion (163) on the side away from the second plane (1412). The second terminal portion is injection molded or limitedly fitted to the second pin (182) as an insert. At least a portion of the first terminal portion (154) is located in the second defect cavity of the second defect portion (163), and at least a portion of the second terminal portion (162) is located in the first defect cavity of the first defect portion (155).

8. The electric valve according to claim 7, characterized in that, There are at least two first terminal portions (154) and at least two first defect portions (155). The at least two first terminal portions (154) and at least two first defect portions (155) are arranged alternately, and the arrangement direction of the at least two first terminal portions (154) and at least two first defect portions (155) is perpendicular to the axial direction of the first coil assembly (P1). There are at least two second terminal portions (162) and at least two second defect portions (163). The at least two second terminal portions (162) and at least two second defect portions (163) are arranged alternately, and the arrangement direction of the at least two second terminal portions (162) and at least two second defect portions (163) is perpendicular to the axial direction of the first coil assembly (P1).

9. A method for manufacturing an electric valve, characterized in that, include: A first skeleton (150) is formed by injection molding with a first claw electrode plate (130) as an insert, and a first coil (110) is wound around the first skeleton (150); a second skeleton (160) is formed by injection molding with a second claw electrode plate (140) as an insert, and a second coil (120) is wound around the second skeleton (150); the first coil assembly (P1) and the second coil assembly (P2) are positioned and engaged.

10. The method for manufacturing the electric valve according to claim 9, characterized in that, include: The first claw electrode plate (130) includes a first substrate (131), and the second claw electrode plate (140) includes a second substrate (141). The end wall of the first substrate (131) and the end wall of the second substrate (141) abut against each other.

11. The method for manufacturing the electric valve according to claim 10, characterized in that, include: The first substrate (131) has a first injection hole (1311), the second substrate (141) has a limiting hole (1411), a portion of the first skeleton (150) is injection molded into the first injection hole (1311), and a portion of the first skeleton (150) is limited and fitted in the limiting hole (1411).

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