Coil component and electrically operated valve

Abstract

The present application provides a coil component and an electrically operated valve. The coil component comprises: a stator assembly, wherein an inner hole allowing for a valve body to pass through is formed in the stator assembly, and the direction in which the axis of the inner hole faces a valve port of the valve body is a first direction; a wire structure, wherein a plurality of pins in the stator assembly are electrically connected to one end of the wire structure; and a fixing structure, encapsulating a part of the wire structure, wherein the direction in which the wire structure within the fixing structure extends away from the pins along the length of the wire structure is a second direction, and the included angle between the first direction and the second direction is θ, wherein 0°<θ<270°. In the solution, the included angle θ between the direction in which the axis of the inner hole faces the valve port of the valve body and the direction in which the wire structure within the fixing structure extends away from the pins along the length of the wire structure is set to be greater than 0° and less than 270°. In this way, when the wire structure needs to be leaded upwards to connect to a control board during the mounting of the coil component, the bending angle required by the wire is reduced, thereby shortening the length of the wire and reducing the risk of damage to the wire caused by large-angle bending.

Description

Coil component and electric valve

[0001] The present application claims priority to the patent application No. 202421597756.4 filed on July 5, 2024 in the China National Intellectual Property Office and entitled "Coil component and electric valve"; the present application claims priority to the patent application No. 2024214940295 filed on June 26, 2024 in the China National Intellectual Property Office and entitled "Coil component". TECHNICAL FIELD

[0002] The present application relates to the technical field of electric valve, in particular to a coil component and an electric valve. BACKGROUND

[0003] In the process of installing the electric valve such as electronic expansion valve, the coil assembly is sleeved on the valve body, and then the lead wire in the coil component needs to be connected to the control panel of the whole machine. From the perspective of installation space, the coil component and the valve body are both located below the control panel, and the initial leading direction of the lead wire is parallel to the axis of the valve body and away from the control panel. Therefore, the lead wire needs to be bent at a large angle during the connection process of the control panel, which will additionally increase the length of the lead wire, and long-term large-angle bending is easy to cause damage to the lead wire.

[0004] SUMMARY

[0005] The present application provides a coil component and an electric valve to reduce the bending angle of the lead wire, shorten the length of the lead wire, and reduce the risk of damage to the lead wire caused by large-angle bending.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the present application, the present application provides a coil component, comprising: a stator assembly, the stator assembly having a plurality of pins, the stator assembly having an inner hole for the valve body to pass through, the axis of the inner hole being in the direction of the valve port of the valve body being a first direction; a lead wire structure, one end of the lead wire structure being electrically connected to the plurality of pins in the stator assembly; a fixing structure, the fixing structure enclosing a part of the lead wire structure, the lead wire structure in the fixing structure being in the direction away from the pins along the length thereof being a second direction; wherein the included angle between the first direction and the second direction is θ, 0°< θ < 270°.

[0007] Further, 160°≤ θ ≤ 200°.

[0008] Further, θ = 180°.

[0009] Further, the pins and the lead wire structure are directly connected, or the pins and the lead wire structure are connected through terminals, or the pins and the lead wire structure are connected through a circuit board.

[0010] Further, the connecting position of the wire structure and the pin is encapsulated by an injection structure or a glue filling structure.

[0011] Further, the coil component further comprises an encapsulation structure, the encapsulation structure being an injection structure, and the encapsulation structure encapsulates at least a part of the stator assembly.

[0012] Further, the fixing structure is an injection molding structure, and the fixing structure and the encapsulation structure are an integral injection structure, or the fixing structure and the encapsulation structure are a split injection structure.

[0013] Further, the encapsulation structure further encapsulates the connecting position of the pin and the wire structure.

[0014] Alternatively, the coil component further comprises a connecting part, the connecting part is sealingly connected with the encapsulation structure, the connecting part covers the connecting position of the pin and the wire structure, the coil component further comprises an insulation cover, the insulation cover is fixedly connected with the connecting part, and an injection cavity is formed between the insulation cover and the connecting part, the connecting position of the pin and the wire structure is located in the injection cavity, a sealing material is filled in the injection cavity, and the sealing material forms the fixing structure.

[0015] Further, the coil component further comprises an upper waterproof cover covering a top of the stator assembly, the upper waterproof cover is sealingly connected with the encapsulation structure, and / or a lower waterproof cover covering a bottom of the stator assembly, the lower waterproof cover is sealingly connected with the encapsulation structure.

[0016] According to another aspect of the present application, the present application provides an electric valve, the electric valve comprising a valve body and the coil component, and the valve body passes through the inner hole of the coil component.

[0017] In the scheme, an included angle θ between an axis of the inner hole and a direction of the wire structure away from the pin along a length of the wire structure is set to 0°<θ<270°, and the value of the included angle in the prior art is 0°. By setting the above angle range, when the coil component needs to be installed by leading the wire structure upward to connect a control panel, the angle of the wire to be bent is smaller compared with the prior art, which shortens the length of the wire and reduces the risk of damage of the wire caused by large-angle bending. By the setting of the fixing structure, the angle of the wire structure electrically connected with the pin is limited, that is, the extension direction of the wire structure located in the fixing structure is fixed. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings, which form a part of this specification, are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification. The embodiments of the application, and their

[0019] Fig. 1 shows a schematic view of a coil component according to an embodiment of the present application;

[0020] Fig. 2 shows a schematic view of a coil component according to an embodiment of the present application;

[0021] Fig. 3 shows a schematic view of a coil component according to an embodiment of the present application;

[0022] Fig. 4 shows a schematic view of a coil component according to an embodiment of the present application;

[0023] Fig. 5 shows an enlarged view of Fig. 4 at position A;

[0024] Fig. 6 shows a schematic view of a coil component according to an embodiment of the present application;

[0025] Fig. 7 shows a schematic view of a coil component according to an embodiment of the present application at a lead-out face position;

[0026] Fig. 8 shows a schematic view of a coil component according to an embodiment of the present application at a lead-out face position;

[0027] Fig. 9 shows a schematic view of a coil component according to an embodiment of the present application at a lead-out face position;

[0028] Fig. 10 shows a schematic view of a coil component according to an embodiment of the present application at a lead-out face position.

[0029] Wherein, the above drawings include the following reference signs: 10, stator assembly; 11, stator housing; 111, upper housing; 112, lower housing; 12, coil structure; 20, wire structure; 30, fixing structure; 31, lead-out face; 32, outer convex slope; 33, outer convex arc face; 34, inner concave face; 341, inner concave slope; 342, inner concave arc face; 40, encapsulation structure; 41, filling structure; 42, encapsulation layer; 51, upper waterproof cover; 511, upper rib; 52, lower waterproof cover; 521, lower rib; 60, insulation cover; 61, injection cavity; 70, connecting part. DETAILED DESCRIPTION

[0030] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way limiting on the application or its applications or uses. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of the present application.

[0031] As shown in FIGS. 1-6, the embodiments of the present application provide a coil component, comprising: a stator assembly 10 containing a wire, a skeleton and a plurality of pins, the stator assembly 10 having an inner hole for the valve body to pass through, the axis of the inner hole being in the first direction towards the valve port of the valve body; a wire structure 20, one end of the wire structure 20 being electrically connected with the plurality of pins in the stator assembly 10; a fixing structure 30, the fixing structure 30 enclosing a part of the wire structure 20, the wire structure 20 located in the fixing structure 30 being in the second direction away from the pins along the length of itself; wherein the included angle between the first direction and the second direction is θ, 0°<θ<270°. Wherein the axis of the valve port is coaxial with the axis of the inner hole.

[0032] In this scheme, the included angle θ between the axis of the inner hole of the stator assembly 10 towards the valve port of the valve body and the direction of the wire structure 20 located in the fixing structure 30 away from the pins along the length of itself is set to 0°<θ<270°, and in the prior art, the value of the included angle is 0°. By setting the above angle range, when the coil component needs to be installed by leading the wire structure 20 upwards to connect the control panel, the angle of the wire to be bent is smaller compared with the prior art, which shortens the length of the wire and reduces the risk of damage to the wire caused by large-angle bending. Wherein, by the setting of the fixing structure 30, the angle of the wire structure 20 electrically connected with the pins is limited, i.e. the extension direction of the wire structure 20 located in the fixing structure 30 is fixed.

[0033] As shown in FIGS. 1-3, in different embodiments, the value of θ is set to different angles as needed.

[0034] In some embodiments, 160°≤θ≤200°. In this way, the end of the wire structure 20 away from the pins is upwards, and when connecting with the control panel located above the stator assembly 10, the wire structure 20 does not need to be bent at a large angle, avoiding damage to the wire structure 20 due to bending, and the connection operation is also more convenient, and the length of the wire structure 20 needed is reduced, saving costs.

[0035] As shown in FIGS. 2 and 4, in some embodiments, θ=180°. That is, the first direction and the second direction are parallel and opposite.

[0036] In some embodiments, 90°≤ θ < 160°, or 20° < θ < 270° is set.

[0037] Wherein, the wire structure 20 comprises a plurality of wires, an insulating sleeve covering the plurality of wires, and a connector, one end of the wire is connected with the pin, the other end of the wire is connected with the connector, and the connector is used for connecting the control panel.

[0038] Wherein, the pin and the wire structure 20 can be electrically connected in different ways, for example, the pin and the wire structure 20 are directly connected, or the pin and the wire structure 20 are connected through a terminal, or the pin and the wire structure 20 are connected through a circuit board.

[0039] Wherein, the connection position of the wire structure 20 and the pin is encapsulated by an injection molding structure or a glue filling structure. In this way, the relative position of the wire structure 20 and the pin is fixed, avoiding disconnection of the two, and playing a waterproof and insulating role.

[0040] In some embodiments, the coil component further comprises an encapsulation structure 40, the encapsulation structure 40 is an injection molding structure, and the encapsulation structure 40 encapsulates at least a part of the stator assembly 10, such as encapsulating the wire inside the stator assembly 10, or encapsulating a part of the outer surface of the stator assembly 10, or encapsulating the entire outer surface of the stator assembly 10. The encapsulation structure 40 plays a protective role for the stator assembly 10.

[0041] As shown in FIGS. 1-4, in some embodiments, the encapsulation structure 40 also encapsulates the connection position of the pin and the wire structure 20. In this way, the relative position of the wire structure 20 and the pin is fixed, avoiding disconnection of the two, and playing a waterproof and insulating role for the connection part 70 of the pin and the wire structure 20.

[0042] In some embodiments, the fixing structure 30 is an injection molding structure, and the encapsulation structure 40 and the fixing structure 30 are set as an integral injection molding structure, that is, at least a part of the stator assembly 10 and at least a part of the wire structure 20 are injection molded as an integral structure. Alternatively, in some embodiments, the encapsulation structure 40 and the fixing structure 30 are separate injection molding structures, which are molded and sealed in different steps.

[0043] As shown in FIG. 4, in some embodiments, the coil component further comprises: an upper waterproof cover 51 covering the top of the stator assembly 10, the upper waterproof cover 51 and the encapsulation structure 40 being sealedly connected; and / or a lower waterproof cover 52 covering the bottom of the stator assembly 10, the lower waterproof cover 52 and the encapsulation structure 40 being sealedly connected. The upper waterproof cover 51 avoids water entering the top of the stator assembly 10, and the lower waterproof cover 52 avoids water entering the bottom of the stator assembly 10, thereby improving the waterproof performance of the coil component.

[0044] In some embodiments, the upper waterproof cover 51 and the encapsulation structure 40 are connected by welding or injection molding; the lower waterproof cover 52 and the encapsulation structure 40 are connected by welding or injection molding. By using the welding or injection molding connection mode, the connection strength is high and the sealing performance is good, so that not only the external liquid is prevented from entering, but also the condensate water in the sealed cavity is reduced or avoided, and the service life of the internal structure is improved. Further, the annular gap is formed between the upper waterproof cover 51 and the lower waterproof cover 52, and the encapsulation structure 40 is formed by the material injected into the annular gap and the assembly gap of the stator assembly 10.

[0045] In some embodiments, the upper waterproof cover 51 and the encapsulation structure 40 are connected by welding or injection molding; the lower waterproof cover 52 and the encapsulation structure 40 are connected by welding or injection molding. By using the welding or injection molding connection mode, the connection strength is high and the sealing performance is good, so that not only the external liquid is prevented from entering, but also the condensate water in the sealed cavity is reduced or avoided, and the service life of the internal structure is improved. Further, the annular gap is formed between the upper waterproof cover 51 and the lower waterproof cover 52, and the encapsulation structure 40 is formed by the material injected into the annular gap and the assembly gap of the stator assembly 10.

[0046] As shown in FIG. 5, the end of the upper waterproof cover 51 facing the encapsulation structure 40 is an annular upper matching surface, and the upper matching surface has at least one annular upper rib 511, and the upper waterproof cover 51 is connected to the encapsulation structure 40 through the upper rib 511; the end of the lower waterproof cover 52 facing the encapsulation structure 40 is an annular lower matching surface, and the lower matching surface has at least one annular lower rib 521, and the lower waterproof cover 52 is connected to the encapsulation structure 40 through the lower rib 521.

[0047] In the welding process, the heated upper rib 511 melts, and the upper waterproof cover 51 and the encapsulation structure 40 are bonded and sealed, and after the material solidifies, the reliable connection of the two is achieved. Correspondingly, the heated lower rib 521 melts, and the lower waterproof cover 52 and the encapsulation structure 40 are bonded and sealed, and after the material solidifies, the reliable connection of the two is achieved.

[0048] In the injection molding connection process, the injection molding material wraps the upper rib 511 and the lower rib 521 during the injection molding of the encapsulation structure 40, which increases the contact area of the connection position, thereby improving the connection strength and sealing effect. In some embodiments, the upper rib 511 and the lower rib 521 each have multiple ribs to further improve the connection strength and sealing effect.

[0049] In some embodiments, the upper waterproof cover 51 is welded to the package structure 40 through the upper rib 511 and the upper matching surface has an annular upper fusion groove for accommodating the excess material after the upper rib 511 is melted; the lower waterproof cover 52 is welded to the package structure 40 through the lower rib 521 and the lower matching surface has an annular lower fusion groove for accommodating the excess material after the lower rib 521 is melted. Through the design of the upper fusion groove and the lower fusion groove, the product quality is improved by avoiding the random flow of the excess material melted during welding.

[0050] In some embodiments, the upper waterproof cover 51, the lower waterproof cover 52 and the package structure 40 are connected by injection molding. Specifically, an annular gap is formed between the upper waterproof cover 51 and the lower waterproof cover 52, and the package structure 40 is formed by the material injected into the annular gap and the assembly gap of the stator assembly 10. The package structure 40 is connected with the upper waterproof cover 51 and the lower waterproof cover 52 during the injection molding process. That is, the upper waterproof cover 51 and the lower waterproof cover 52 are first assembled with the stator assembly 10, and then the package structure 40 is injection molded. During the injection molding process, not only the package structure 40 is formed, but also the connection between the package structure 40 and the upper waterproof cover 51 and the lower waterproof cover 52 is achieved, so that the production steps are less and the production efficiency is high.

[0051] In some embodiments, the stator assembly 10 includes a stator housing 11 and a coil structure 12 located in the stator housing 11, and the assembly gap is located between the stator housing 11 and the coil structure 12; the package structure 40 includes a filling structure 41 and a package layer 42, wherein the filling structure 41 is located in the assembly gap, and the package layer 42 is located in the annular gap; the filling structure 41, the package layer 42 and the fixing structure 30 are integrally injection molded. Through this design, the filling structure 41 fills the assembly gap between the stator housing 11 and the coil structure 12, and the fixation of the coil structure 12 is achieved. Moreover, the filling structure 41, the package layer 42 and the fixing structure 30 are integrally injection molded, which simplifies the production steps and improves the sealing effect and structural strength of the coil component.

[0052] In some embodiments, the stator housing 11 includes an upper housing 111 and a lower housing 112, one end of the upper housing 111 and one end of the lower housing 112 contact at the junction position, and the coil structure 12 is located in the cavity between the upper housing 111 and the lower housing 112; in the axial direction of the stator housing 11, the package layer 42 is spaced apart from the junction position. If the package layer 42 has an injection defect, a pore will be generated, which will affect the sealing effect of the stator assembly 10 if the pore corresponds to the junction position. Therefore, spacing the package layer 42 from the junction position avoids the problem of affecting the sealing effect.

[0053] As shown in FIG. 6, in one embodiment, the coil component further comprises a connecting part 70, the connecting part 70 is sealingly connected with the package structure 40, the connecting part 70 covers the connecting position of the pin and the wire structure 20, and the coil component further comprises an insulating cover 60, the insulating cover 60 is fixedly connected with the connecting part 70, and the insulating cover 60 and the connecting part 70 have an injection cavity 61 therebetween, the connecting position of the pin and the wire structure 20 is located in the injection cavity 61, and the injection cavity 61 is filled with a sealing material, and the sealing material forms the fixing structure 30. In this way, the direction limitation, sealing and protection of the part of the wire structure 20 electrically connected with the pin are realized by filling the sealing material. The connecting part 70 is sealingly connected with the package structure 40, and the two are integrally formed or separately formed. The sealing material is sealing glue or the like.

[0054] As shown in FIGS. 7 to 9, in some embodiments, the fixing structure 30 has an exit face 31 away from the stator assembly 10, the wire structure 20 passes through the exit face 31, and the exit face 31 is not perpendicular to the length direction of the wire structure 20. Through this arrangement, the connecting position of the exit face 31 and the wire structure 20 is not prone to water accumulation, and water accumulation in the exit face 31 is avoided to cause the coil component to fail due to water ingress. Therefore, the problem that water seepage at the connecting position of the fixing structure 30 and the wire structure 20 of the coil component causes the electric valve to fail is solved. In some embodiments, the electric valve is specifically an electronic expansion valve.

[0055] As shown in FIGS. 7 and 8, the exit face 31 comprises an outer convex surface, one end of the wire structure 20 close to the stator assembly 10 is a first end, and the other end of the wire structure 20 is a second end, and the outer convex surface protrudes in a direction away from the first end.

[0056] In this way, when the wire structure 20 is arranged on the upward side of the fixing structure 30, the outer convex surface protrudes toward the first end, so that the outer convex surface is not perpendicular to the length direction of the wire structure 20, water can slide down along the outer convex surface, and water is not prone to accumulate at the connecting position of the outer convex surface and the wire structure 20. When the wire structure 20 is arranged on the downward side of the fixing structure 30, water flows down along the wire structure 20 under the action of gravity, and is not prone to accumulate at the connecting position of the outer convex surface and the wire structure 20.

[0057] As shown in FIG. 7, in the sixth embodiment of the present application, the outer convex surface comprises an outer convex inclined surface 32, the outer convex inclined surface 32 is inclined relative to the radial surface of the wire structure 20, one side of the outer convex inclined surface 32 close to the wire structure 20 is an inner ring, and the other side of the outer convex inclined surface 32 away from the wire structure 20 is an outer ring, and the distance between the inner ring and the first end is greater than the distance between the outer ring and the first end.

[0058] In this way, the outer convex slope 32 is inclined relative to the radial surface of the wire structure 20, so that water can flow down along the outer convex slope 32 and is not easily accumulated at the connection position of the outer convex slope 32 and the wire structure 20. The distance between the inner circle and the first end is greater than the distance between the outer circle and the first end, so that the outer convex slope 32 is a tapered surface, and water is not easily accumulated on the outer convex slope 32.

[0059] Further, in the sixth embodiment of the present application, the angle between the outer convex slope 32 and the radial surface of the wire structure 20 is P, and 0° < P ≤ 45°.

[0060] In this way, P is set to be between 0° and 45°, so as to ensure the water accumulation prevention effect and the strength of the end of the fixing structure 30 away from the stator assembly 10. The greater the angle between the outer convex slope 32 and the radial surface of the wire structure 20, the steeper the outer convex slope 32, and the better the water accumulation prevention effect, but the end of the fixing structure 30 away from the stator assembly 10 will be thinned, and the strength of the outer convex slope 32 will be reduced. Setting 0° < P ≤ 45° can ensure the water accumulation prevention of the outer convex slope 32 and the strength of the end of the fixing structure 30 away from the stator assembly 10.

[0061] As shown in FIG. 8, in the seventh embodiment of the present application, the outer convex surface includes an outer convex arc surface 33, and the curvature of the outer convex arc surface 33 is convex toward the direction away from the first end.

[0062] In this way, the curvature of the outer convex arc surface 33 is convex toward the direction away from the first end, so that water can flow down along the curvature of the outer convex arc surface 33, and water is not easily accumulated at the connection position of the outer convex arc surface 33 and the wire structure 20, thereby achieving the purpose of water accumulation prevention and avoiding water flowing into the connection position of the stator assembly 10 and the wire structure, which causes the performance failure of the electric valve.

[0063] During the operation of the coil component of the electric valve, the materials of the wire structure 20 and the fixing structure 30 will shrink or stretch due to temperature changes, and the materials of the wire structure 20 and the fixing structure 30 are different, so that the different materials have different thermal expansion coefficients, which causes different shrinkage or stretching deformation amounts and generates tearing stress. In the sixth and seventh embodiments of the present application, the setting of the outer convex surface makes the thickness of the end of the fixing structure 30 away from the stator assembly 10 smaller, so that the tearing stress is relatively small, and the connection failure of the fixing structure 30 and the wire structure 20 is not easily caused, thereby reducing the risk of water seeping from between the fixing structure 30 and the wire structure 20 to cause the performance failure of the electric valve.

[0064] As shown in FIG. 9 and FIG. 10, the lead-out surface 31 includes an inner concave surface 34, and the end of the wire structure 20 close to the stator assembly 10 is a first end, and the inner concave surface 34 is concave toward the first end.

[0065] When the electric valve is installed to the client, if the extension direction of the wire structure 20 drawn out from the fixed structure 30 is inclined to be vertically downward, the inner concave surface 34 is used to prevent water from accumulating at the end of the fixed structure 30 away from the stator assembly 10.

[0066] As shown in FIG. 9, in the eighth embodiment of the present application, the side wall of the inner concave surface 34 is an inner concave inclined surface 341, the inner concave inclined surface 341 is inclined relative to the radial surface of the wire structure 20, the inner concave inclined surface 341 is an inner circle at the side close to the wire structure 20, and is an outer circle at the side away from the wire structure 20, and the distance between the inner circle and the first end is less than the distance between the outer circle and the first end.

[0067] In this way, when the electric valve is installed to the client, if the extension direction of the wire structure 20 drawn out from the fixed structure 30 is inclined to be vertically downward, water can flow down along the inner concave inclined surface 341, and is not easy to accumulate at the connection position between the inner concave inclined surface 341 and the wire structure 20, thereby avoiding water entering the fixed structure 30 from the connection position between the fixed structure 30 and the wire structure 20, and causing the performance of the electric valve to fail. The distance between the inner circle and the first end is less than the distance between the outer circle and the first end, so that the inner concave inclined surface 341 is recessed inward, and when the electric valve is installed to the client, if the extension direction of the wire structure 20 drawn out from the fixed structure 30 is inclined to be vertically downward, the wire structure 20 is arranged at the downward side of the fixed structure 30, and water is not easy to accumulate in the recess.

[0068] As shown in FIG. 10, in the ninth embodiment of the present application, the side wall of the inner concave surface 34 is an inner concave arc surface 342, and the inner concave arc surface 342 is recessed toward the fixed structure 30.

[0069] In this way, when the electric valve is installed to the client, if the extension direction of the wire structure 20 drawn out from the fixed structure 30 is inclined to be vertically downward, the wire structure 20 is arranged at the downward side of the fixed structure 30, and water can flow down along the arc of the inner concave arc surface 342, so that water is not easy to accumulate in the inner concave arc surface 342, thereby avoiding water entering the fixed structure 30 from the connection position between the fixed structure 30 and the wire structure 20, and causing the performance of the electric valve to fail.

[0070] In the eighth and ninth embodiments of the present application, the inner concave surface 34 is arranged to make the thickness of the end of the fixed structure 30 away from the stator assembly 10 smaller, so that the tearing stress is relatively small, and the connection between the fixed structure 30 and the wire structure 20 is not easy to fail, thereby reducing the risk of water seeping between the fixed structure 30 and the wire structure 20 to cause the electric valve to fail.

[0071] In some embodiments, the wire structure 20 comprises a plurality of wires and an insulating shell enclosing the wires, the plurality of wires are arranged side by side, and the cross section of the insulating shell is a flat tube. In this way, the plurality of wires are arranged side by side, and the insulating shell encloses the plurality of wires, so that the order of the plurality of wires is fixed, and the wires are not easy to be mixed up during the installation of the electric valve. The outer side of the flat tube is connected with the fixing structure 30.

[0072] In some embodiments, the wire structure 20 comprises a plurality of wires and an insulating shell enclosing the wires, the cross section of the insulating shell is circular. The outer side of the circular insulating shell is fixedly connected with the fixing structure 30.

[0073] In some embodiments, one end of the wire structure 20 is connected with the stator assembly 10, and the other end of the wire structure 20 is connected with the connector. After the stator assembly 10 and the wire structure 20 are initially connected, the fixing structure 30 is obtained by injection molding or glue filling. In this way, the fixed connection between the wire structure 20 and the stator assembly 10 is realized through the fixing structure 30.

[0074] In some embodiments, after the pins of the stator assembly 10 are electrically connected with the wire structure 20, a part of the structure of the stator assembly 10 and the wire structure 20 are embedded into the fixing structure 30 by injection molding.

[0075] Some embodiments in FIGS. 7-10 have the following effects:

[0076] 1. The leading surface 31 of the fixing structure 30 away from the stator assembly 10 is not perpendicular to the length direction of the wire structure 20. Water can flow down along the leading surface 31, so that the leading surface 31 is not easy to accumulate water, preventing the water accumulated in the leading surface 31 from slowly penetrating into the coil and causing short circuit of the coil, so that the performance of the electric valve is invalid.

[0077] 2. During the operation of the coil part of the electric valve, the materials of the wire structure 20 and the fixing structure 30 shrink or stretch due to temperature changes. The materials of the wire structure 20 and the fixing structure 30 are different, and the shrinkage or stretching deformation of different materials is different due to the different thermal expansion coefficients, which causes tearing stress. Through the setting of the convex surface or the concave surface, the thickness of the end of the fixing structure 30 away from the stator assembly 10 is reduced, the tearing stress of the end of the fixing structure 30 away from the stator assembly 10 caused by deformation is reduced, the speed of the decrease of the bonding strength between the wire structure 20 and the fixing structure 30 is slowed down, and the connection between the wire structure 20 and the fixing structure 30 is more firm, which is not easy to crack and cause water penetration, and cause the performance of the electric valve to be invalid.

[0078] 3、The angle between the outer convex slope 32 and the radial surface of the lead structure 20 is P, which is set to 0°<P≤45°. The greater the angle between the outer convex slope 32 and the radial surface of the lead structure 20, the steeper the outer convex slope 32, and the better the water accumulation prevention effect, but it will cause the end of the fixing structure 30 away from the stator assembly 10 to be thin, and the strength at the outer convex slope 32 will be reduced. Setting 0°<P≤45° can prevent water accumulation at the outer convex slope 32 while ensuring the strength of the end of the fixing structure 30 away from the stator assembly 10.

[0079] The application also provides an electric valve, which comprises a valve body and the coil component described above, and the valve body passes through the inner hole of the coil component. The electric valve is a valve of the type of electronic expansion valve, etc. In this scheme, the included angle θ between the axis of the inner hole of the stator assembly 10 and the direction of the lead structure 20 away from the pin along its length is set to 0°<θ<270°, and the value of this included angle in the prior art is 0°. By setting the above angle range, when the coil component needs to be installed by leading the lead structure 20 upward to connect the control board, the angle of the lead wire bending is smaller compared with the prior art, which shortens the length of the lead wire and reduces the risk of damage to the lead wire caused by large-angle bending.

[0080] The above is only an embodiment of the application and is not intended to limit the application. For those skilled in the art, the application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the application shall be included in the protection scope of the application.

Claims

1. A coil component characterized by comprising: The coil assembly comprises: a stator assembly (10) having pins, the stator assembly (10) having an inner hole for the valve body to pass through, the axis of the inner hole being in the first direction towards the valve port of the valve body; a wire structure (20), one end of the wire structure (20) being electrically connected with the plurality of pins in the stator assembly (10); a fixing structure (30) enclosing a part of the wire structure (20), the wire structure (20) in the fixing structure (30) being in the second direction away from the pins along the length of itself; wherein the included angle between the first direction and the second direction is θ, 0° < θ < 270°.

2. The coil component according to claim 1, characterized by 160° ≤ θ ≤ 200°.

3. The coil assembly of claim 1, wherein, The pins and the wire structure (20) are directly connected, or the pins and the wire structure (20) are connected through terminals, or the pins and the wire structure (20) are connected through a circuit board; the connection position of the wire structure (20) and the pins is encapsulated by an injection molding structure or a glue filling structure.

4. The coil assembly of claim 1, wherein, The coil assembly further comprises an encapsulation structure (40), the encapsulation structure (40) being an injection molding structure, the encapsulation structure (40) encapsulating at least a part of the stator assembly (10); the fixing structure (30) is an injection molding structure, the fixing structure (30) and the encapsulation structure (40) being an integral injection molding structure, or the fixing structure (30) and the encapsulation structure (40) being a split injection molding structure.

5. The coil assembly of claim 4, wherein, The encapsulation structure (40) further encapsulates the connection position of the pins and the wire structure (20).

6. The coil assembly of claim 4, wherein, The coil assembly further comprises a connecting part (70), the connecting part (70) being sealingly connected with the encapsulation structure (40), the connecting part (70) covering the connection position of the pins and the wire structure (20), the coil assembly further comprising an insulating cover (60), the insulating cover (60) being fixedly connected with the connecting part (70), the insulating cover (60) and the connecting part (70) having an injection cavity (61) therebetween, the connection position of the pins and the wire structure (20) being located in the injection cavity (61), the injection cavity (61) being filled with a sealing material, the sealing material forming the fixing structure (30).

7. The coil assembly of claim 4, wherein, The coil assembly further comprises: an upper waterproof cover (51) covering the top of the stator assembly (10), the upper waterproof cover (51) being sealingly connected with the encapsulation structure (40); and / or a lower waterproof cover (52) covering the bottom of the stator assembly (10), the lower waterproof cover (52) being sealingly connected with the encapsulation structure (40).

8. The coil assembly of claim 7, wherein, The upper waterproof cover (51) and the encapsulation structure (40) are connected by welding or injection molding; the lower waterproof cover (52) and the encapsulation structure (40) are connected by welding or injection molding.

9. The coil assembly of claim 7, wherein, The upper waterproof cover (51) is annular at one end facing the package structure (40), and has at least one annular upper rib (511) on the upper matching surface, and the upper waterproof cover (51) is connected with the package structure (40) through the upper rib (511); the lower waterproof cover (52) is annular at one end facing the package structure (40), and has at least one annular lower rib (521) on the lower matching surface, and the lower waterproof cover (52) is connected with the package structure (40) through the lower rib (521).

10. The coil assembly of claim 9, wherein, The upper waterproof cover (51) is welded with the package structure (40) through the upper rib (511), and the upper matching surface has an annular upper fusion groove for accommodating the excess material after the upper rib (511) is melted; the lower waterproof cover (52) is welded with the package structure (40) through the lower rib (521), and the lower matching surface has an annular lower fusion groove for accommodating the excess material after the lower rib (521) is melted.

11. The coil assembly of claim 4, wherein, The coil assembly further comprises an upper waterproof cover (51) and a lower waterproof cover (52), and an annular gap is formed between the upper waterproof cover (51) and the lower waterproof cover (52), and the package structure (40) is formed by material injected into the annular gap and an assembly gap of the stator assembly (10).

12. The coil assembly of claim 11, wherein, The package structure (40) is connected with the upper waterproof cover (51) and the lower waterproof cover (52) during injection molding; the stator assembly (10) comprises a stator shell (11) and a coil structure (12) located in the stator shell (11), and the assembly gap is located between the stator shell (11) and the coil structure (12); the package structure (40) comprises a filling structure (41) and a package layer (42), wherein the filling structure (41) is located in the assembly gap, and the package layer (42) is located in the annular gap; the filling structure (41), the package layer (42) and the fixing structure (30) are integrally injection molded.

13. The coil assembly of claim 12, wherein, The stator shell (11) comprises an upper shell (111) and a lower shell (112), one end of the upper shell (111) and one end of the lower shell (112) contact at an interface position, and the coil structure (12) is located in a cavity between the upper shell (111) and the lower shell (112); in the axial direction of the stator shell (11), the package layer (42) and the interface position are spaced apart.

14. The coil assembly of claim 1, wherein, The fixing structure (30) has a lead-out surface (31) at one end away from the stator assembly (10), the wire structure (20) passes through the lead-out surface (31), and the lead-out surface (31) is not perpendicular to the length direction of the wire structure (20).

15. The coil assembly of claim 14, wherein, The lead-out surface (31) comprises an outer convex surface, one end of the wire structure (20) close to the stator assembly (10) is a first end, the other end of the wire structure (20) is a second end, and the outer convex surface protrudes in a direction away from the first end.

16. The coil assembly of claim 15, wherein, the outer convex surface comprises an outer convex inclined surface (32) inclined with respect to a radial plane of the wire structure (20), one side of the outer convex inclined surface (32) close to the wire structure (20) is an inner ring, and the other side of the outer convex inclined surface (32) away from the wire structure (20) is an outer ring, and the distance between the inner ring and the first end is greater than the distance between the outer ring and the first end; or the outer convex surface comprises an outer convex arc surface (33), and the curvature of the outer convex arc surface (33) protrudes in a direction away from the first end. The lead-out surface (31) comprises an inner concave surface (34), and one end of the wire structure (20) close to the stator assembly (10) is a first end, and the inner concave surface (34) is recessed in a direction towards the first end.

17. The coil assembly of claim 14, wherein, The side wall of the inner concave surface (34) is an inner concave inclined surface (341) inclined with respect to a radial plane of the wire structure (20), one side of the inner concave inclined surface (341) close to the wire structure (20) is an inner ring, and the other side of the inner concave inclined surface (341) away from the wire structure (20) is an outer ring, and the distance between the inner ring and the first end is less than the distance between the outer ring and the first end; or the side wall of the inner concave surface (34) is an inner concave arc surface (342) recessed in a direction towards the fixed structure (30).

18. The coil assembly of claim 17, wherein, 19. The coil assembly of claim 14, wherein, the wire structure (20) comprises a plurality of wires and an insulating shell enclosing the outside of the wires, the plurality of wires are arranged side by side, and the cross section of the insulating shell is a flat tube; or the wire structure (20) comprises a plurality of wires and an insulating shell sleeved outside the wires, and the cross section of the insulating shell is circular. The electric valve comprises a valve body and the coil assembly of any one of claims 1 to 19, and the valve body passes through the inner hole of the coil assembly. ​ 20. An electrically powered valve characterised in that ​

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